CN112812469A - Anti-weathering pipeline and preparation method thereof - Google Patents
Anti-weathering pipeline and preparation method thereof Download PDFInfo
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- CN112812469A CN112812469A CN202110078685.1A CN202110078685A CN112812469A CN 112812469 A CN112812469 A CN 112812469A CN 202110078685 A CN202110078685 A CN 202110078685A CN 112812469 A CN112812469 A CN 112812469A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 15
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003063 flame retardant Substances 0.000 claims abstract description 12
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 claims abstract description 11
- 235000012538 ammonium bicarbonate Nutrition 0.000 claims abstract description 11
- 239000001099 ammonium carbonate Substances 0.000 claims abstract description 11
- 239000003365 glass fiber Substances 0.000 claims abstract description 11
- 239000010453 quartz Substances 0.000 claims abstract description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 11
- DLHONNLASJQAHX-UHFFFAOYSA-N aluminum;potassium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Si+4].[Si+4].[Si+4].[K+] DLHONNLASJQAHX-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 10
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 10
- 239000002216 antistatic agent Substances 0.000 claims abstract description 10
- 239000007822 coupling agent Substances 0.000 claims abstract description 10
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 10
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims description 44
- 238000004513 sizing Methods 0.000 claims description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
- 238000005520 cutting process Methods 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 15
- 239000000498 cooling water Substances 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 15
- 239000010949 copper Substances 0.000 claims description 15
- 238000001125 extrusion Methods 0.000 claims description 15
- 229920003023 plastic Polymers 0.000 claims description 15
- 239000004033 plastic Substances 0.000 claims description 15
- 238000012360 testing method Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 14
- 239000002994 raw material Substances 0.000 claims description 12
- 229920001971 elastomer Polymers 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 5
- 230000007774 longterm Effects 0.000 claims description 5
- 239000003921 oil Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 238000007639 printing Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
- 239000007858 starting material Substances 0.000 claims description 5
- 238000009966 trimming Methods 0.000 claims description 5
- 238000007666 vacuum forming Methods 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000032683 aging Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to the technical field of pipelines, and discloses an anti-weathering pipeline and a preparation method thereof, wherein the anti-weathering pipeline is composed of the following materials in parts by weight: 5-7 parts of ammonium bicarbonate, 3-7 parts of quartz, 1-3 parts of potassium feldspar, 75-100 parts of polyvinyl chloride, 2-6 parts of coupling agent, 2-5 parts of glass fiber, 4-7 parts of antioxidant, 8-11 parts of flame retardant and 1-4 parts of antistatic agent. The invention provides an anti-weathering pipeline and a preparation method thereof.
Description
Technical Field
The invention relates to the field of pipelines, in particular to an anti-weathering pipeline and a preparation method thereof.
Background
The pipeline is a device which is formed by connecting pipes, pipe connectors, valves and the like and used for conveying gas, liquid or fluid with solid particles, and generally, after the fluid is pressurized by a blower, a compressor, a pump, a boiler and the like, the fluid flows from a high-pressure part to a low-pressure part of the pipeline, and can also be conveyed by utilizing the pressure or gravity of the fluid. The pipeline has wide application range, is mainly used for water supply, drainage, heat supply, gas supply, long-distance petroleum and natural gas transmission, agricultural irrigation, hydraulic engineering and various industrial devices, has the characteristic of aging and weathering to cause unnecessary loss in the existing pipeline, and needs a wide raw material source.
The existing pipeline has some defects, unnecessary loss is caused by the characteristics of aging and weathering, and a weathering-resistant pipeline with wide raw material source and obvious weathering resistance effect is urgently needed.
In order to solve the problems, the application provides an anti-weathering pipeline and a preparation method thereof.
Disclosure of Invention
Objects of the invention
In order to solve the technical problems in the background art, the invention provides an anti-weathering pipeline and a preparation method thereof.
(II) technical scheme
In order to solve the problems, the invention provides an anti-weathering pipeline which is composed of the following materials in parts by weight: 5-7 parts of ammonium bicarbonate, 3-7 parts of quartz, 1-3 parts of potassium feldspar, 75-100 parts of polyvinyl chloride, 2-6 parts of coupling agent, 2-5 parts of glass fiber, 4-7 parts of antioxidant, 8-11 parts of flame retardant and 1-4 parts of antistatic agent.
Preferably, the material comprises the following materials in parts by weight: 5-6 parts of ammonium bicarbonate, 3-5 parts of quartz, 1-2 parts of potassium feldspar, 75-88 parts of polyvinyl chloride, 2-4 parts of coupling agent, 2-3.5 parts of glass fiber, 4-5.5 parts of antioxidant, 8-9.5 parts of flame retardant and 1-2.5 parts of antistatic agent.
Preferably, the material comprises the following materials in parts by weight: 6-7 parts of ammonium bicarbonate, 5-7 parts of quartz, 2-3 parts of potassium feldspar, 88-100 parts of polyvinyl chloride, 4-6 parts of coupling agent, 3.5-5 parts of glass fiber, 5.5-7 parts of antioxidant, 9.5-11 parts of flame retardant and 2.5-4 parts of antistatic agent.
The anti-weathering pipeline is prepared by the following specific steps:
s1, heating
The heating temperature of each section of the machine barrel and the machine head is adjusted within +/-10 ℃, and when the heating temperature of each heating section completely reaches or exceeds the set temperature, the temperature is kept constant, so that the real temperature of each heating section is close to or equal to the set temperature; if the temperature difference between the temperature reflected by the temperature control instrument and the temperature displayed by the thermometer is too large, the difference reason is checked;
s2, extruding pipe
When the heating temperatures of the sections of the machine barrel and the machine head all reach the set temperature (+ -2 ℃) and are constant for 90-150 minutes without great change, starting the machine to extrude the pipe; starting a main machine screw to operate at a low speed (5-10 revolutions per minute), starting a feeder screw to feed at a low speed (5-10 revolutions per minute), adding a starting material, and adding raw materials to formally extrude the pipe after normal extrusion; when the pipe is formally extruded, the rotating speed of a main machine gradually reaches the normal rotating speed (the middle speed is higher), the torque of a torque meter is displayed, the torque of the machine type is preferably kept between 35% and 65%, and the extrusion current and the torque are preferably kept;
s3, vacuum forming and cooling of pipe
After the extruded pipe is normally pulled, starting a vacuum pump on a vacuum shaping water tank, enabling the pipe passing through the sizing copper sleeve to be adsorbed on the inner wall of the sizing cylinder sleeve in a vacuum environment, and adjusting the vacuum degree according to the allowable deviation of the outer diameter of the pipe; the qualified tube after sizing is separated from the sizing copper sleeve under the traction action of a tractor, enters a cooling water tank, is drawn out of the vacuum sizing water tank and the cooling water tank after being cooled by suona spray or soaked and cooled, and is conveyed towards a printer and a cutting machine through the running transmission of a tractor crawler; the water inlet and outlet quantity of the vacuum pump is strictly controlled, and the vacuum pump is forbidden to be used as a water pump;
s4 pipe drawing
Introducing the pipe with uniform wall thickness into a sizing copper sleeve, penetrating the pipe through a vacuum sizing water tank, cooling the pipe, clamping the pipe into a track of a rubber pressing strip of a tractor, starting the tractor to continuously convey the extruded pipe to a printer and a cutting machine, wherein the traction speed of the tractor is consistent with the extrusion speed of the pipe;
s5 cutting of pipe
When the pipe after the printing process is conveyed to a cutting machine, the travel switch is adjusted according to the required length, and the pipe is automatically cut when conveyed to a specified position; the small-caliber pipe (below 63) is cut by a plastic profile saw blade, the large-caliber water supply pipe (above 75) is cut by a planetary cutting machine, and the chamfering process is completed simultaneously when the pipe is cut; during trial operation, a section of pipe with the same specification and model as the produced pipe is selected and repeatedly cut on the machine for test adjustment, and the chamfer can be formally cut until the chamfer depth is uniform, and the revolution speed, the times and the like meet the specified requirements; if the cutting machine cannot normally cut due to a sudden accident (such as insufficient air pressure or unstable voltage), an operator needs to start an emergency cutter retracting button to protect all parts of the planetary cutting machine from being damaged;
s6, when the water supply pipes above 75 are connected by rubber sealing rings, the bell ends of the pipes need to be flared; the flaring of the pipe bell mouth is finished by using a full-automatic plastic pipe flaring machine; before using the plastic pipe flaring machine, according to the specification of the produced pipe, a corresponding flaring special die head is installed firstly, an oil conveying pipe, a cooling water pipe and a gas conveying pipe are connected, a special fixture is installed, critical data such as heating temperature, heating time, forming time, cooling time and the like are set, firstly, the pipe with the same model is used for trial flaring, and data trimming and adjustment are carried out according to the flaring forming condition until the flaring of the trial flaring pipe is qualified.
Preferably, in S1, in view of the wear of the screw of the barrel during long-term load operation of the extruder, the difference in performance between various raw materials, and the difference in the processing and forming temperatures of the pipes of various models and specifications, the setting ranges of the heating temperatures of the sections of the barrel and the head provided in the production process flow are set and adjusted based on the first-inspected qualified products obtained in the processing process.
Preferably, in S1, the temperature should be kept constant for 90-150 minutes.
Preferably, in S3, the sizing vacuum degree is controlled to be in the range of-0.01 MPa to-0.06 MPa.
Preferably, in S4, the pipe with high drawing speed has thinner wall thickness, the pipe with low drawing speed has thicker wall thickness, the drawing speed is suitable for the pipe with thicker wall thickness to meet the requirement of the regulation, and the large-caliber pipe is drawn by a three-jaw (or six-jaw) drawing machine.
The technical scheme of the invention has the following beneficial technical effects:
the weathering resistance effect of the pipeline is improved by adding ammonium bicarbonate, quartz and potash feldspar; the strength of the pipeline is increased by adding the glass fiber; and the flame retardant is added, so that the flame retardant effect of the pipeline is improved.
Drawings
Fig. 1 is a diagram of a method for manufacturing an anti-weathering duct according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings 1 in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Example 1
The anti-weathering pipeline is composed of the following materials in parts by weight: 6 parts of ammonium bicarbonate, 5 parts of quartz, 2 parts of potassium feldspar, 88 parts of polyvinyl chloride, 4 parts of coupling agent, 3.5 parts of glass fiber, 5.5 parts of antioxidant, 8.5 parts of flame retardant and 5.5 parts of antistatic agent.
The anti-weathering pipeline is prepared by the following specific steps:
s1, heating
The heating temperature of each section of the machine barrel and the machine head is adjusted within +10 ℃, and when the heating temperature of each heating section completely reaches or exceeds the set temperature, the temperature is kept constant, so that the real temperature of each heating section is close to or equal to the set temperature; if the temperature difference between the temperature reflected by the temperature control instrument and the temperature displayed by the thermometer is too large, the difference reason is checked;
s2, extruding pipe
When the heating temperatures of the machine barrel and the machine head sections all reach the set temperature and are constant for 90-150 minutes without major change, starting the machine to extrude the pipe; starting a main machine screw to operate at a low speed (5 revolutions/min), starting a feeder screw to operate at a low speed to feed (5 revolutions/min), adding a starting material, and adding raw materials to formally extrude the pipe after normal extrusion; when the pipe is formally extruded, the rotating speed of a main machine gradually reaches normal rotating speed (medium speed), the torque of a torque meter displays that the machine type should keep 35% of torque, and the extrusion current should be kept with the torque;
s3, vacuum forming and cooling of pipe
After the extruded pipe is normally pulled, starting a vacuum pump on a vacuum shaping water tank, enabling the pipe passing through the sizing copper sleeve to be adsorbed on the inner wall of the sizing cylinder sleeve in a vacuum environment, and adjusting the vacuum degree according to the allowable deviation of the outer diameter of the pipe; the qualified tube after sizing is separated from the sizing copper sleeve under the traction action of a tractor, enters a cooling water tank, is drawn out of the vacuum sizing water tank and the cooling water tank after being cooled by suona spray or soaked and cooled, and is conveyed towards a printer and a cutting machine through the running transmission of a tractor crawler; the water inlet and outlet quantity of the vacuum pump is strictly controlled, and the vacuum pump is forbidden to be used as a water pump;
s4 pipe drawing
Introducing the pipe with uniform wall thickness into a sizing copper sleeve, penetrating the pipe through a vacuum sizing water tank, cooling the pipe, clamping the pipe into a track of a rubber pressing strip of a tractor, starting the tractor to continuously convey the extruded pipe to a printer and a cutting machine, wherein the traction speed of the tractor is consistent with the extrusion speed of the pipe;
s5 cutting of pipe
When the pipe after the printing process is conveyed to a cutting machine, the travel switch is adjusted according to the required length, and the pipe is automatically cut when conveyed to a specified position; the small-caliber pipe (below 63) is cut by a plastic profile saw blade, the large-caliber water supply pipe (above 75) is cut by a planetary cutting machine, and the chamfering process is completed simultaneously when the pipe is cut; during trial operation, a section of pipe with the same specification and model as the produced pipe is selected and repeatedly cut on the machine for test adjustment, and the chamfer can be formally cut until the chamfer depth is uniform, and the revolution speed, the times and the like meet the specified requirements; if the cutting machine cannot normally cut due to a sudden accident (such as insufficient air pressure or unstable voltage), an operator needs to start an emergency cutter retracting button to protect all parts of the planetary cutting machine from being damaged;
s6, when the water supply pipes above 75 are connected by rubber sealing rings, the bell ends of the pipes need to be flared; the flaring of the pipe bell mouth is finished by using a full-automatic plastic pipe flaring machine; before using the plastic pipe flaring machine, according to the specification of the produced pipe, a corresponding flaring special die head is installed firstly, an oil conveying pipe, a cooling water pipe and a gas conveying pipe are connected, a special fixture is installed, critical data such as heating temperature, heating time, forming time, cooling time and the like are set, firstly, the pipe with the same model is used for trial flaring, and data trimming and adjustment are carried out according to the flaring forming condition until the flaring of the trial flaring pipe is qualified.
In an alternative embodiment, in S1, in view of the wear of the barrel screw caused by long-term load operation of the extruder, the difference in the performance of various raw materials, the difference in the processing and forming temperatures of various types and specifications of pipes, the setting range of the heating temperatures of the sections of the machine barrel and the machine head provided in the production process flow is determined, and the setting and adjustment of the temperatures of the sections of the barrel and the machine head should be performed based on the first-checked qualified product obtained in the processing process.
In an alternative embodiment, in S1, the temperature should be maintained for 90 minutes.
In an alternative embodiment, in S3, the sizing vacuum is controlled to be-0.01 MPa.
In an alternative embodiment, in S4, the tube wall thickness becomes thinner at a high drawing speed, the tube wall thickness becomes thicker at a low drawing speed, the drawing speed is suitable for the tube wall thickness to meet the requirements, and the large-caliber tube is drawn by using a three-jaw (or six-jaw) drawing machine.
Example 2
The anti-weathering pipeline is composed of the following materials in parts by weight: 6.5 parts of ammonium bicarbonate, 6 parts of quartz, 2.5 parts of potassium feldspar, 94 parts of polyvinyl chloride, 5 parts of coupling agent, 4.4 parts of glass fiber, 6 parts of antioxidant, 10 parts of flame retardant and 3.2 parts of antistatic agent.
The anti-weathering pipeline is prepared by the following specific steps:
s1, heating
The heating temperature of each section of the machine barrel and the machine head is adjusted within-10 ℃, and when the heating temperature of each heating section completely reaches or exceeds the set temperature, the temperature is kept constant, so that the real temperature of each heating section is close to or equal to the set temperature; if the temperature difference between the temperature reflected by the temperature control instrument and the temperature displayed by the thermometer is too large, the difference reason is checked;
s2, extruding pipe
When the heating temperatures of the sections of the machine barrel and the machine head all reach the set temperature (-2 ℃) and are constant for 150 minutes without great change, the machine can be started to extrude the pipe; starting a main machine screw to operate at a low speed (10 revolutions per minute), starting a feeder screw to operate at a low speed (10 revolutions per minute) for feeding, adding a starting material, and adding raw materials to formally extrude the pipe after normal extrusion; when the pipe is formally extruded, the rotating speed of a main machine gradually reaches the normal rotating speed, the torque display of a torque meter is preferably that the machine type should keep 65% of torque, and the extrusion current should be kept with the torque;
s3, vacuum forming and cooling of pipe
After the extruded pipe is normally pulled, starting a vacuum pump on a vacuum shaping water tank, enabling the pipe passing through the sizing copper sleeve to be adsorbed on the inner wall of the sizing cylinder sleeve in a vacuum environment, and adjusting the vacuum degree according to the allowable deviation of the outer diameter of the pipe; the qualified tube after sizing is separated from the sizing copper sleeve under the traction action of a tractor, enters a cooling water tank, is drawn out of the vacuum sizing water tank and the cooling water tank after being cooled by suona spray or soaked and cooled, and is conveyed towards a printer and a cutting machine through the running transmission of a tractor crawler; the water inlet and outlet quantity of the vacuum pump is strictly controlled, and the vacuum pump is forbidden to be used as a water pump;
s4 pipe drawing
Introducing the pipe with uniform wall thickness into a sizing copper sleeve, penetrating the pipe through a vacuum sizing water tank, cooling the pipe, clamping the pipe into a track of a rubber pressing strip of a tractor, starting the tractor to continuously convey the extruded pipe to a printer and a cutting machine, wherein the traction speed of the tractor is consistent with the extrusion speed of the pipe;
s5 cutting of pipe
When the pipe after the printing process is conveyed to a cutting machine, the travel switch is adjusted according to the required length, and the pipe is automatically cut when conveyed to a specified position; the small-caliber pipe (below 63) is cut by a plastic profile saw blade, the large-caliber water supply pipe (above 75) is cut by a planetary cutting machine, and the chamfering process is completed simultaneously when the pipe is cut; during trial operation, a section of pipe with the same specification and model as the produced pipe is selected and repeatedly cut on the machine for test adjustment, and the chamfer can be formally cut until the chamfer depth is uniform, and the revolution speed, the times and the like meet the specified requirements; if the cutting machine cannot normally cut due to a sudden accident (such as insufficient air pressure or unstable voltage), an operator needs to start an emergency cutter retracting button to protect all parts of the planetary cutting machine from being damaged;
s6, when the water supply pipes above 75 are connected by rubber sealing rings, the bell ends of the pipes need to be flared; the flaring of the pipe bell mouth is finished by using a full-automatic plastic pipe flaring machine; before using the plastic pipe flaring machine, according to the specification of the produced pipe, a corresponding flaring special die head is installed firstly, an oil conveying pipe, a cooling water pipe and a gas conveying pipe are connected, a special fixture is installed, critical data such as heating temperature, heating time, forming time, cooling time and the like are set, firstly, the pipe with the same model is used for trial flaring, and data trimming and adjustment are carried out according to the flaring forming condition until the flaring of the trial flaring pipe is qualified.
In an alternative embodiment, in S1, in view of the wear of the barrel screw caused by long-term load operation of the extruder, the difference in the performance of various raw materials, the difference in the processing and forming temperatures of various types and specifications of pipes, the setting range of the heating temperatures of the sections of the machine barrel and the machine head provided in the production process flow is determined, and the setting and adjustment of the temperatures of the sections of the barrel and the machine head should be performed based on the first-checked qualified product obtained in the processing process.
In an alternative embodiment, in S1, the temperature should be maintained for 100 minutes.
In an alternative embodiment, in S3, the calibration vacuum is controlled to be in the range of-0.04 MPa.
In an alternative embodiment, in S4, the tube wall thickness becomes thinner at a high drawing speed, the tube wall thickness becomes thicker at a low drawing speed, the drawing speed is suitable for the tube wall thickness to meet the requirements, and the large-caliber tube is drawn by using a three-jaw (or six-jaw) drawing machine.
Example 3
The anti-weathering pipeline is composed of the following materials in parts by weight: 7 parts of ammonium bicarbonate, 7 parts of quartz, 3 parts of potassium feldspar, 100 parts of polyvinyl chloride, 6 parts of coupling agent, 5 parts of glass fiber, 7 parts of antioxidant, 11 parts of flame retardant and 4 parts of antistatic agent.
The anti-weathering pipeline is prepared by the following specific steps:
s1, heating
The heating temperature of each section of the machine barrel and the machine head is adjusted within +10 ℃, and when the heating temperature of each heating section completely reaches or exceeds the set temperature, the temperature is kept constant, so that the real temperature of each heating section is close to or equal to the set temperature; if the temperature difference between the temperature reflected by the temperature control instrument and the temperature displayed by the thermometer is too large, the difference reason is checked;
s2, extruding pipe
When the heating temperatures of the machine barrel and the machine head sections all reach the set temperature (+2 ℃) and are constant for 120 minutes without great change, starting the machine and extruding the pipe; starting a main machine screw to operate at a low speed (6 revolutions per minute), starting a feeder screw to operate at a low speed to feed materials (8 revolutions per minute), adding a starting material, and adding raw materials to formally extrude the pipe after normal extrusion; when the pipe is formally extruded, the rotating speed of the main machine gradually reaches the normal rotating speed (medium speed), the torque of the torque meter is displayed to be suitable for keeping 35-65% of torque according to the machine type, and the extrusion current and the torque are kept;
s3, vacuum forming and cooling of pipe
After the extruded pipe is normally pulled, starting a vacuum pump on a vacuum shaping water tank, enabling the pipe passing through the sizing copper sleeve to be adsorbed on the inner wall of the sizing cylinder sleeve in a vacuum environment, and adjusting the vacuum degree according to the allowable deviation of the outer diameter of the pipe; the qualified tube after sizing is separated from the sizing copper sleeve under the traction action of a tractor, enters a cooling water tank, is drawn out of the vacuum sizing water tank and the cooling water tank after being cooled by suona spray or soaked and cooled, and is conveyed towards a printer and a cutting machine through the running transmission of a tractor crawler; the water inlet and outlet quantity of the vacuum pump is strictly controlled, and the vacuum pump is forbidden to be used as a water pump;
s4 pipe drawing
Introducing the pipe with uniform wall thickness into a sizing copper sleeve, penetrating the pipe through a vacuum sizing water tank, cooling the pipe, clamping the pipe into a track of a rubber pressing strip of a tractor, starting the tractor to continuously convey the extruded pipe to a printer and a cutting machine, wherein the traction speed of the tractor is consistent with the extrusion speed of the pipe;
s5 cutting of pipe
When the pipe after the printing process is conveyed to a cutting machine, the travel switch is adjusted according to the required length, and the pipe is automatically cut when conveyed to a specified position; the small-caliber pipe (below 63) is cut by a plastic profile saw blade, the large-caliber water supply pipe (above 75) is cut by a planetary cutting machine, and the chamfering process is completed simultaneously when the pipe is cut; during trial operation, a section of pipe with the same specification and model as the produced pipe is selected and repeatedly cut on the machine for test adjustment, and the chamfer can be formally cut until the chamfer depth is uniform, and the revolution speed, the times and the like meet the specified requirements; if the cutting machine cannot normally cut due to a sudden accident (such as insufficient air pressure or unstable voltage), an operator needs to start an emergency cutter retracting button to protect all parts of the planetary cutting machine from being damaged;
s6, when the water supply pipes above 75 are connected by rubber sealing rings, the bell ends of the pipes need to be flared; the flaring of the pipe bell mouth is finished by using a full-automatic plastic pipe flaring machine; before using the plastic pipe flaring machine, according to the specification of the produced pipe, a corresponding flaring special die head is installed firstly, an oil conveying pipe, a cooling water pipe and a gas conveying pipe are connected, a special fixture is installed, critical data such as heating temperature, heating time, forming time, cooling time and the like are set, firstly, the pipe with the same model is used for trial flaring, and data trimming and adjustment are carried out according to the flaring forming condition until the flaring of the trial flaring pipe is qualified.
In an alternative embodiment, in S1, in view of the wear of the barrel screw caused by long-term load operation of the extruder, the difference in the performance of various raw materials, the difference in the processing and forming temperatures of various types and specifications of pipes, the setting range of the heating temperatures of the sections of the machine barrel and the machine head provided in the production process flow is determined, and the setting and adjustment of the temperatures of the sections of the barrel and the machine head should be performed based on the first-checked qualified product obtained in the processing process.
In an alternative embodiment, in S1, the temperature should be maintained for 100 minutes.
In an alternative embodiment, in S3, the calibration vacuum is controlled to be in the range of-0.02 MPa.
In an alternative embodiment, in S4, the tube wall thickness becomes thinner at a high drawing speed, the tube wall thickness becomes thicker at a low drawing speed, the drawing speed is suitable for the tube wall thickness to meet the requirements, and the large-caliber tube is drawn by using a three-jaw (or six-jaw) drawing machine.
Example 4
Experiment of
Selecting the pipelines in the embodiment 1, the embodiment 2 and the embodiment 3 and the existing market to carry out a weather resistance test, wherein the test method is as follows;
(1) weighing the mass of the test piece in a natural state to obtain the original mass of the test piece
(2) Drying the test piece at 40 ℃ to constant mass and then measuring the mass and the elastic longitudinal wave velocity value of the test piece to respectively obtain the mass and the elastic wave velocity before the chemical material is processed;
(3) respectively soaking the test pieces in organic silicon, and measuring the mass of the test pieces every 1d until the mass constant weight reaches a saturated state;
(4) taking out the saturated test piece from the chemical material, standing in the air for 7d, drying at 40 ℃ until the mass is constant, and measuring the mass and the elastic longitudinal wave velocity value to obtain the processed mass and elastic wave velocity;
(5) and carrying out conventional triaxial compression and other tests, wherein the confining pressure is 5, 10 and 20MPa respectively.
The test results the pipeline quality table is as follows:
| species of | Results (pipe surface quality) |
| Example 1 | Is excellent in |
| Example 2 | Is excellent in |
| Example 3 | Is excellent in |
| Is on the market | In general |
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (8)
1. The anti-weathering pipeline is characterized by comprising the following materials in parts by weight: 5-7 parts of ammonium bicarbonate, 3-7 parts of quartz, 1-3 parts of potassium feldspar, 75-100 parts of polyvinyl chloride, 2-6 parts of coupling agent, 2-5 parts of glass fiber, 4-7 parts of antioxidant, 8-11 parts of flame retardant and 1-4 parts of antistatic agent.
2. The weathering protection pipe of claim 1, comprising the following materials in parts by weight: 5-6 parts of ammonium bicarbonate, 3-5 parts of quartz, 1-2 parts of potassium feldspar, 75-88 parts of polyvinyl chloride, 2-4 parts of coupling agent, 2-3.5 parts of glass fiber, 4-5.5 parts of antioxidant, 8-9.5 parts of flame retardant and 1-2.5 parts of antistatic agent.
3. The weathering protection pipe of claim 1, comprising the following materials in parts by weight: 6-7 parts of ammonium bicarbonate, 5-7 parts of quartz, 2-3 parts of potassium feldspar, 88-100 parts of polyvinyl chloride, 4-6 parts of coupling agent, 3.5-5 parts of glass fiber, 5.5-7 parts of antioxidant, 9.5-11 parts of flame retardant and 2.5-4 parts of antistatic agent.
4. The weathering duct of any of claims 1-3, characterized by the specific preparation method as follows:
s1, heating
The heating temperature of each section of the machine barrel and the machine head is adjusted within +/-10 ℃, and when the heating temperature of each heating section completely reaches or exceeds the set temperature, the temperature is kept constant, so that the real temperature of each heating section is close to or equal to the set temperature; if the temperature difference between the temperature reflected by the temperature control instrument and the temperature displayed by the thermometer is too large, the difference reason is checked;
s2, extruding pipe
When the heating temperatures of the sections of the machine barrel and the machine head all reach the set temperature (+ -2 ℃) and are constant for 90-150 minutes without great change, starting the machine to extrude the pipe; starting a main machine screw to operate at a low speed (5-10 revolutions per minute), starting a feeder screw to feed at a low speed (5-10 revolutions per minute), adding a starting material, and adding raw materials to formally extrude the pipe after normal extrusion; when the pipe is formally extruded, the rotating speed of a main machine gradually reaches the normal rotating speed (the middle speed is higher), the torque of a torque meter is displayed, the torque of the machine type is preferably kept between 35% and 65%, and the extrusion current and the torque are preferably kept;
s3, vacuum forming and cooling of pipe
After the extruded pipe is normally pulled, starting a vacuum pump on a vacuum shaping water tank, enabling the pipe passing through the sizing copper sleeve to be adsorbed on the inner wall of the sizing cylinder sleeve in a vacuum environment, and adjusting the vacuum degree according to the allowable deviation of the outer diameter of the pipe; the qualified tube after sizing is separated from the sizing copper sleeve under the traction action of a tractor, enters a cooling water tank, is drawn out of the vacuum sizing water tank and the cooling water tank after being cooled by suona spray or soaked and cooled, and is conveyed towards a printer and a cutting machine through the running transmission of a tractor crawler; the water inlet and outlet quantity of the vacuum pump is strictly controlled, and the vacuum pump is forbidden to be used as a water pump;
s4 pipe drawing
Introducing the pipe with uniform wall thickness into a sizing copper sleeve, penetrating the pipe through a vacuum sizing water tank, cooling the pipe, clamping the pipe into a track of a rubber pressing strip of a tractor, starting the tractor to continuously convey the extruded pipe to a printer and a cutting machine, wherein the traction speed of the tractor is consistent with the extrusion speed of the pipe;
s5 cutting of pipe
When the pipe after the printing process is conveyed to a cutting machine, the travel switch is adjusted according to the required length, and the pipe is automatically cut when conveyed to a specified position; the small-caliber pipe (below 63) is cut by a plastic profile saw blade, the large-caliber water supply pipe (above 75) is cut by a planetary cutting machine, and the chamfering process is completed simultaneously when the pipe is cut; during trial operation, a section of pipe with the same specification and model as the produced pipe is selected and repeatedly cut on the machine for test adjustment, and the chamfer can be formally cut until the chamfer depth is uniform, and the revolution speed, the times and the like meet the specified requirements; if the cutting machine cannot normally cut due to a sudden accident (such as insufficient air pressure or unstable voltage), an operator needs to start an emergency cutter retracting button to protect all parts of the planetary cutting machine from being damaged;
s6, when the water supply pipes above 75 are connected by rubber sealing rings, the bell ends of the pipes need to be flared; the flaring of the pipe bell mouth is finished by using a full-automatic plastic pipe flaring machine; before using the plastic pipe flaring machine, according to the specification of the produced pipe, a corresponding flaring special die head is installed firstly, an oil conveying pipe, a cooling water pipe and a gas conveying pipe are connected, a special fixture is installed, critical data such as heating temperature, heating time, forming time, cooling time and the like are set, firstly, the pipe with the same model is used for trial flaring, and data trimming and adjustment are carried out according to the flaring forming condition until the flaring of the trial flaring pipe is qualified.
5. The weather-resistant pipe and the manufacturing method thereof according to claim 4, wherein in S1, the temperature of the sections of the machine barrel and the machine head should be set and adjusted based on the quality of the first-inspection products obtained in the manufacturing process in consideration of the wear of the screw of the machine barrel, the difference of the performance of various raw materials, and the difference of the processing and forming temperature of various types and specifications of pipes during the long-term load operation of the extruder.
6. The weather-proof duct and the manufacturing method thereof according to claim 4, wherein the temperature is kept constant for 90 to 150 minutes at S1.
7. The weathering pipe and the manufacturing method thereof according to claim 4, wherein in S3, the sizing vacuum is controlled in the range of-0.01 MPa to-0.06 MPa.
8. The weather-proof pipeline and the preparation method thereof as claimed in claim 4, wherein in S4, the wall thickness of the pipe becomes thinner at a high pulling speed, the wall thickness of the pipe becomes thicker at a low pulling speed, the wall thickness of the pipe meets the requirements of the specification only when the pulling speed is suitable for the wall thickness of the pipe, and the large-caliber pipe is pulled by using a three-jaw (or six-jaw) tractor.
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