CN109535605A - Transparent type PVC-U electrician formula - Google Patents
Transparent type PVC-U electrician formula Download PDFInfo
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- CN109535605A CN109535605A CN201811459390.3A CN201811459390A CN109535605A CN 109535605 A CN109535605 A CN 109535605A CN 201811459390 A CN201811459390 A CN 201811459390A CN 109535605 A CN109535605 A CN 109535605A
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- electrician
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- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 36
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 36
- 239000011347 resin Substances 0.000 claims abstract description 30
- 229920005989 resin Polymers 0.000 claims abstract description 30
- 239000006057 Non-nutritive feed additive Substances 0.000 claims abstract description 17
- 239000007854 depigmenting agent Substances 0.000 claims abstract description 17
- -1 polyethylene Polymers 0.000 claims abstract description 16
- 239000003381 stabilizer Substances 0.000 claims abstract description 16
- 239000004698 Polyethylene Substances 0.000 claims abstract description 15
- 229920000573 polyethylene Polymers 0.000 claims abstract description 15
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 14
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 14
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000004014 plasticizer Substances 0.000 claims abstract description 14
- 239000008117 stearic acid Substances 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims description 20
- 238000002156 mixing Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 8
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 6
- 238000001746 injection moulding Methods 0.000 claims description 6
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 5
- 229920001577 copolymer Polymers 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 3
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 239000006081 fluorescent whitening agent Substances 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims 1
- 150000001336 alkenes Chemical class 0.000 claims 1
- 238000005469 granulation Methods 0.000 claims 1
- 230000003179 granulation Effects 0.000 claims 1
- 150000004702 methyl esters Chemical class 0.000 claims 1
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 8
- 229920003023 plastic Polymers 0.000 abstract description 4
- 239000004033 plastic Substances 0.000 abstract description 4
- 238000005461 lubrication Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 11
- 239000002994 raw material Substances 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 5
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000036541 health Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 1
- 101000873502 Homo sapiens S-adenosylmethionine decarboxylase proenzyme Proteins 0.000 description 1
- 102100035914 S-adenosylmethionine decarboxylase proenzyme Human genes 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical group CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- WQPDQJCBHQPNCZ-UHFFFAOYSA-N cyclohexa-2,4-dien-1-one Chemical compound O=C1CC=CC=C1 WQPDQJCBHQPNCZ-UHFFFAOYSA-N 0.000 description 1
- 210000004262 dental pulp cavity Anatomy 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000008821 health effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention relates to plastic pipe technical fields, a kind of transparent type PVC-U electrician formula is disclosed, is composed of the following parts by weight: 80-130 parts of polyvinyl chloride resin, 3-9 parts of processing aid, 1-5 parts of plasticizer, 2-6 parts of stabilizer, 0.3-2 parts of stearic acid, 0.5-3 parts of polyethylene wax, 8-20 parts of depigmenting agent.The present invention be able to solve in the prior art electrician's tubing because cause damages to human body, environment due to containing heavy metal component the problem of.
Description
Technical field
The present invention relates to plastic pipe technical fields, and in particular to a kind of transparent type PVC-U electrician formula.
Background technique
As people increasingly pay attention to home environment, health, house ornamentation environmental protection is increasingly paid attention to, while country puts into effect
Multinomial examination criteria detects whether indoor environment reaches environmental protection standard.Hard polyvinyl chloride (PVC-U) electrical casing pipe is by for many years
Development, insulation, fire-retardant, waterproof, antirust, protection electric wire, it is cheap, easy for construction many advantages, such as, it is deep to be liked by user
Vigorously.Some contains heavy metal in traditional electrician's tubing, such as: lead, in use, has biggish harm to human health,
It in the processing after it is scrapped, easily pollutes the environment, is not suitable for promoting and applying.
Summary of the invention
An object of the present invention is to provide a kind of transparent type PVC-U electrician formula, to solve electric pipe in the prior art
Material is because cause damages to human body, environment the problem of due to containing heavy metal component.
To achieve the above object, The technical solution adopted by the invention is as follows:
Transparent type PVC-U electrician formula, is composed of the following parts by weight: 80-130 parts of polyvinyl chloride resin, processing aid
3-9 parts, 1-5 parts of plasticizer, 2-6 parts of stabilizer, 0.3-2 parts of stearic acid, 0.5-3 parts of polyethylene wax, 8-20 parts of depigmenting agent.
Compared with prior art, the principle of the present invention and the utility model has the advantages that due to easily decomposing, flowing when pure polyvinyl chloride resin processing
Dynamic property is poor, impact strength is low, weatherability is poor, therefore by the way that processing aid, plasticizer and stabilizer is added, accelerates the modeling of PVC
Change process increases its mobile performance and thermal stability.By the way that stearic acid is added as in-lubricant, due to stearic acid and PVC tree
Rouge has certain compatibility, therefore can reduce the intermolecular cohesive force of polyvinyl chloride resin, reduces its melt viscosity, to weaken PVC tree
The interior friction of rouge part, achievees the effect that internal lubrication.By the way that polyethylene wax is added as lubricant, since polyethylene wax is with non-
The polar centers of Chang Qiang and very long non-polar carbon chains, part compatible with polyvinyl chloride resin in polarity, plays reduction in structure
The effect of polyvinyl chloride resin intermolecular cohesion so as to improve the internal frictional heat generation of polyvinyl chloride resin and the mobility of melt, and then reaches
The effect of interior lubrication；The part incompatible with polyvinyl chloride resin on nonpolarity can improve polyvinyl chloride resin melt and process equipment
The friction of hot metal surface is easy it toward external migration out of melt, therefore since the part and polyvinyl chloride resin compatibility are poor
The thin layer of lubrication can be formed in polyvinyl chloride resin and metallic interface, to achieve the effect that outer lubrication and demoulding, thus polyethylene
Wax can play the role of interior lubrication and outer lubrication simultaneously, but also be able to maintain the transparency of height.By the way that depigmenting agent is added,
The color for eliminating plastics, improves its transparency.This programme does not use heavy metal component on the whole, achievees the effect that environmental protection, health,
Be conducive to promote and apply.
Further, it is composed of the following parts by weight: 90-120 parts of polyvinyl chloride resin, 5-7 parts of processing aid, plasticizer
2-3 parts, 3-5 parts of stabilizer, 0.5-1 parts of stearic acid, 1-2 parts of polyethylene wax, 10-15 parts of depigmenting agent.By further limiting group
Divide content, can further improve the quality of the tubing made of the formula under the range.
Further, the stabilizer is organotin.Organotin has excellent thermal stability, the transparency and mobility,
And it is good with polyvinyl chloride resin compatibility, achieve the effect that increase polyvinyl chloride resin stability.
Further, the processing aid is methyl methacrylate/acrylic acid ester copolymer, methyl methacrylate/benzene
One of ethylene copolymer, acrylonitrile/styrene.Such processing aid can accelerate the plasticizing process of PVC, improve its melt
Rheological property, improve thermoelasticity state under melt mechanical property and improve product presentation quality.
Further, the depigmenting agent is phthalocyanine blue and fluorescent whitening agent.Pipe can be improved using such combined type depigmenting agent
The transparency of material.
An object of the present invention is to provide a kind of preparation method of transparent type PVC-U electrician tubing, comprising the following steps:
(1) the required weight of each component in formula is accurately weighed；
(2) polyvinyl chloride resin, processing aid, plasticizer, stabilizer, stearic acid, polyethylene wax, depigmenting agent are added sequentially to
It is stirred mixing in blender, is first heated during stirring, then cool down, stands mixed after mixing
Material；
(3) mixing is transferred to extruding production line hopper by feeding system, after twin-screw extrusion melts, then through being granulated mould
Tool is granulated；
(4) it is delivered to injection molding machine through feeding system, injection molding, cooling and shaping are at tubing.
It is easy to operate using this method, the good electrician's tubing of transparency with environmental-protecting performance can be quickly produced,
Improve the efficiency of production and processing.
Detailed description of the invention
Fig. 1 is the main view sectional view of blender in the embodiment of the present invention.
Specific embodiment
It is further described below by specific embodiment:
Appended drawing reference in Figure of description includes: internal box 1, outer case 2, cavity 3, heater strip 4, regulating switch 5, cold
Blower 6, pressure valve 7, agitating shaft 8, motor 9, stirring blade 10, through-hole 11, cylinder 12, temperature scale protrusion 13, Heat insulated conduit
14, strainer 15, thin slice 16, piston 17, piston rod 18, close switch 19.
Blender in embodiment is substantially as shown in Fig. 1:
Related data is as shown in table 1 in embodiment:
Table 1
| Embodiment | Polyvinyl chloride resin | Processing aid | Plasticizer | Stabilizer | Stearic acid | Polyethylene wax | Depigmenting agent |
| 1 | 80 | 3 | 1 | 2 | 0.3 | 0.5 | 8 |
| 2 | 90 | 4 | 2 | 2 | 0.5 | 0.5 | 10 |
| 3 | 100 | 5 | 2 | 3 | 0.5 | 1 | 13 |
| 4 | 100 | 6 | 3 | 4 | 1 | 1.5 | 15 |
| 5 | 110 | 7 | 3 | 5 | 1 | 2 | 17 |
| 6 | 120 | 8 | 4 | 5 | 1.5 | 2.5 | 18 |
| 7 | 130 | 9 | 5 | 6 | 2 | 3 | 20 |
In above-described embodiment 1 to 7, polyvinyl chloride resin is polyvinyl chloride resin SG-8.
In above-described embodiment 1 to 7, processing aid is methyl methacrylate/acrylic acid ester copolymer, methyl methacrylate
One of ester/styrol copolymer, acrylonitrile/styrene.
In above-described embodiment 1 to 7, plasticizer is dioctyl phthalate.
In above-described embodiment 1 to 7, stabilizer is organotin, such as: Methyl stannum mercaptide.
In above-described embodiment 1 to 7, depigmenting agent is phthalocyanine blue and fluorescent whitening agent.
Using formula of the invention by addition processing aid, plasticizer and stabilizer, accelerate the plasticizing process of PVC,
Increase its mobile performance and thermal stability.By the way that stearic acid is added as in-lubricant, the intermolecular cohesion of polyvinyl chloride resin is reduced
Power reduces its melt viscosity, to weaken the interior friction of polyvinyl chloride resin part, achievees the effect that internal lubrication.By the way that polyethylene is added
Wax plays the role of reducing polyvinyl chloride resin intermolecular cohesion as lubricant, so as to improve polyvinyl chloride resin internal frictional heat generation and
The mobility of melt, and then achieve the effect that interior lubrication；The thermometal table of polyvinyl chloride resin melt and process equipment can be improved simultaneously
The friction in face forms the thin layer of lubrication in polyvinyl chloride resin and metallic interface, to achieve the effect that outer lubrication and demoulding, thus
Polyethylene wax can play the role of interior lubrication and outer lubrication simultaneously, but also be able to maintain the transparency of height.Pass through addition
Depigmenting agent eliminates the color of plastics, improves its transparency.This programme does not use heavy metal component on the whole, reaches environmental protection, health
Effect, be conducive to promote and apply.
Comparative example 1:
A kind of PVC-U electrician's formulating of recipe for pipes, including following components: 70 parts of polyvinyl chloride resin, 2 parts of processing aid, 1 part of plasticizer,
1 part of stabilizer, 0.2 part of stearic acid, 0.4 part of polyethylene wax, 6 parts of depigmenting agent.
Comparative example 2:
A kind of PVC-U electrician's formulating of recipe for pipes, including following components: 140 parts of polyvinyl chloride resin, 10 parts of processing aid, plasticizer 6
Part, 7 parts of stabilizer, 3 parts of stearic acid, 4 parts of polyethylene wax, 21 parts of depigmenting agent.
Now by taking embodiment 4 as an example, the method for preparing transparent type PVC-U electrician's tubing is illustrated, comprising the following steps:
(1) it uses and is accurate to the required weight that 0.01g electronic balance accurately weighs each component in formula；
(2) polyvinyl chloride resin, processing aid, plasticizer, stabilizer, stearic acid, polyethylene wax, depigmenting agent are added sequentially to
It is stirred mixing in blender, is first to heat to 150 DEG C, stirs 30min, then cool to 45 DEG C, stands 12h after mixing and obtains
To mixing；
(3) mixing is transferred to extruding production line hopper by feeding system, after twin-screw extrusion melts, then through being granulated mould
Tool is granulated, and obtaining its partial size is 5mm；
(4) it is delivered to injection molding machine through feeding system, injection molding, cooling and shaping are at tubing.
The blender used in the above method, structure include mixer, and mixer includes internal box 1 and outer case 2,
Internal box 1 is fixedly connected with outer case 2 and is formed between the two cavity 3, and heater strip 4 is connected in cavity 3, is pacified in outer case 2
Equipped with the regulating switch 5 for opening and closing heater strip 4, it is communicated with air-cooler 6 on cavity 3, connection cavity 3 is installed in outer case 2
With extraneous pressure valve 7.It is rotatably connected to agitating shaft 8 on mixer and is connected with the motor 9 for driving agitating shaft 8 to rotate,
Motor 9 is located at 2 top of outer case, and 8 upper end of agitating shaft is fixedly connected with the output shaft of motor 9, and 8 lower end of agitating shaft passes through outer case
2, cavity 3 are extend into internal box 1.It is connected on agitating shaft 8 along the radial wavy stirring blade 10 of agitating shaft 8, is located at
Agitating shaft 8 in cavity 3 and internal box 1 is hollow structure, and connection cavity 3 and stirring are provided on the agitating shaft 8 in cavity 3
The through-hole 11 of axis 8, stirring blade 10 are also connected to for hollow structure and with agitating shaft 8.Outer case 2 is equipped with temperature testing organization,
Specific structure includes transparent cylinder 12, and 12 outer wall of cylinder is equipped with seven equidistant temperature scale protrusions 13, respectively 0
DEG C, 30 DEG C, 60 DEG C, 90 DEG C, 120 DEG C, 150 DEG C, 180 DEG C, Heat insulated conduit 14 is communicated between cylinder 12 and internal box 1, it is heat-insulated
Conduit 14, which is located on one end of internal box 1, is connected with strainer 15, and sealing slidably connects thin slice 16,16 top of thin slice in cylinder 12
Cylinder 12 in slidably connect piston 17,17 upper surface of piston is welded with piston rod 18, and 18 upper end of piston rod is pierced by cylinder 12
And be threadedly coupled with the formation of cylinder 12, be equipped on 17 lower surface of piston for control heater strip 4 close to switch 19.
When specifically used, each component is added in internal box 1, is adjusted to 17 lower surface of piston by rotary-piston bar 18
It is flushed with the temperature scale protrusion 13 at 150 DEG C.Then start motor 9, motor 9 will drive agitating shaft 8 to rotate, and agitating shaft 8 will
It drives stirring blade 10 to rotate, raw material is stirred.Regulating switch 5 is opened, starting heater strip 4 heats, the temperature in cavity 3
It gradually rises, the raw material in internal box 1 is heated, simultaneously because through-hole 11 is connected to cavity 3 and agitating shaft 8, therefore cavity 3
The air being inside heated enters via through holes 11 in agitating shaft 8, and since agitating shaft 8 is connected to stirring blade 10, heat
Air will go into stirring blade 10, make the raw material of middle section in internal box 1 in whipping process with stirring blade 10, stir
It mixes when axis 8 contacts and is heated, so that raw material in internal box 1 be enable to be heated evenly, the situation for avoiding heating uneven occurs.This
Outside, stirring blade 10 is wavy, and the scrambling of stirring can be improved, and makes to stir more uniform.
As temperature constantly increases in internal box 1, air will constantly expand in internal box 1, due to cylinder 12 and internal box 1
Connection, therefore hot-air will go into cylinder 12, be arranged on Heat insulated conduit 14 strainer 15 be in order to prevent raw material enter every
Heat pipe 14 and result in blockage.After hot-air enters cylinder 12, increase the pressure of 12 lower chamber of cylinder, hot-air will push thin
16 upward sliding of piece, when thin slice 16 slide into distance close to switch 19 be 2mm when, will start close to switch 19, control heater strip 4
Stop heating, temperature is 150 DEG C in internal box 1 at this time.By the way that cylinder 12 is arranged, the property expanded using air heats, internally
Control is adjusted in 1 temperature of cabinet, avoids temperature excessively high and leads to raw material decomposes.When temperature is lower than 150 DEG C in internal box 1,
Air expansion reduces, and thin slice 16 will be moved down away from close to switch 19, will close close to switch 19, heater strip 4 will again at this time
Secondary heating makes temperature in internal box 1 maintain 150 DEG C, to guarantee that temperature is constant.
When cooling, regulating switch 5 is closed, heater strip 4 will stop heating, and then start air-cooler 6, air-cooler 6 will be to sky
Supply cold wind in chamber 3 reduces the temperature of cavity 3, agitating shaft 8 and stirring blade 10, makes 3 internal pressure of cavity since cold wind constantly enters
Strong to increase, when the pressure increases to the critical value of pressure valve 7, pressure valve 7 be will automatically turn on, and the cavity 3 in cavity 3 will be from pressure
Power valve 7 is discharged, to make the cold wind for forming flowing in cavity 3, plays the role of cooling.
It is stirred using the blender, it can be achieved that heating up and two functions that cool down.By the way that hollow 8 He of agitating shaft is arranged
Stirring blade 10 keeps agitating shaft 8, stirring blade 10 identical as the temperature at cavity 3, to make in internal box 1 that temperature is identical, keeps away
The heating of 1 middle section of internal box is slower when exempting to heat, and the cooling of 1 middle section of internal box is slower when cooling, and leads to hot-spot,
The case where causing raw material decomposes, so it is heating when mixing raw material, cooling and stir evenly.
The tubing formed after preparation is tested:
The more stringent detection method of industry is International Electrotechnical Commission (IEC) formulation about electronic and electrical equipment at present
In limit the use of the test method of harmful substance.
Detect foundation:
| Detection project | Test method | Test equipment |
| Lead (Pb) | IEC 62321-5:2013 | ICP-OES |
| Cadmium (Cd) | IEC 62321-5:2013 | ICP-OES |
| Mercury (Hg) | IEC 62321-4:2013+AMD1:2017CSV | ICP-OES |
| Cr VI (Cr) | IEC 62321-5:2013 | ICP-OES |
Each embodiment is randomly selected is tested with a batch of 10 root canal material, and surveys 10 groups of numbers to each embodiment
According to being averaged.
Testing result is as follows:
| Lead (Pb) | Cadmium (Cd) | Mercury (Hg) | Cr VI (Cr) | |
| Content standard (mg/kg) | ≤1000 | ≤100 | ≤1000 | ≤1000 |
| Embodiment 1 (mg/kg) | 0 | 0 | 0 | 0 |
| Embodiment 2 (mg/kg) | 0 | 0 | 0 | 0 |
| Embodiment 3 (mg/kg) | 0 | 0 | 0 | 0 |
| Embodiment 4 (mg/kg) | 0 | 0 | 0 | 0 |
| Embodiment 5 (mg/kg) | 0 | 0 | 0 | 0 |
| Embodiment 6 (mg/kg) | 0 | 0 | 0 | 0 |
| Embodiment 7 (mg/kg) | 0 | 0 | 0 | 0 |
| Comparative example 1 (mg/kg) | 10 | 0.5 | 1.3 | 0.5 |
| Comparative example 2 (mg/kg) | 33 | 1.3 | 2.2 | 1.3 |
By the above test data it is found that heavy metal will not be precipitated into the electrician's tubing produced of embodiment 7 in embodiment 1,
But heavy metal is precipitated in comparative example 1 and comparative example 2.
In conclusion heavy metal will not be precipitated using the transparent type PVC-U electrician tubing that formula manufacture is produced, it is right
Environmental nonpollution.
What has been described above is only an embodiment of the present invention, and the common sense such as well known specific structure and characteristic are not made herein in scheme
Excessive description.It, without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art
Make several modifications and improvements.These also should be considered as protection scope of the present invention, these all will not influence what the present invention was implemented
Effect and patent practicability.The scope of protection required by this application should be based on the content of the claims, in specification
The records such as specific embodiment can be used for explaining the content of claim.
Claims (6)
1. transparent type PVC-U electrician is formulated, it is characterised in that: be composed of the following parts by weight: polyvinyl chloride resin 80-130
Part, 3-9 parts of processing aid, 1-5 parts of plasticizer, 2-6 parts of stabilizer, 0.3-2 parts of stearic acid, 0.5-3 parts of polyethylene wax, depigmenting agent
8-20 parts.
2. transparent type PVC-U electrician formula according to claim 1, it is characterised in that: by the component of following parts by weight
Composition: 90-120 parts of polyvinyl chloride resin, 5-7 parts of processing aid, 2-3 parts of plasticizer, 3-5 parts of stabilizer, 0.5-1 parts of stearic acid, poly- second
1-2 parts of alkene wax, 10-15 parts of depigmenting agent.
3. transparent type PVC-U electrician formula according to claim 2, it is characterised in that: the stabilizer is organotin.
4. transparent type PVC-U electrician formula according to claim 2, it is characterised in that: the processing aid is methyl-prop
One of e pioic acid methyl ester/acrylate copolymer, methyl methacrylate/styrol copolymer, acrylonitrile/styrene.
5. transparent type PVC-U electrician according to claim 2 formula, it is characterised in that: the depigmenting agent be phthalocyanine blue and
Fluorescent whitening agent.
6. according to claim 1 to the method that transparent type PVC-U electrician formula prepares tubing described in 5 any one, feature
It is: the following steps are included:
(1) the required weight of each component in formula is accurately weighed；
(2) polyvinyl chloride resin, processing aid, plasticizer, stabilizer, stearic acid, polyethylene wax, depigmenting agent are added sequentially to stir
It is stirred mixing in machine, is first heated during stirring, then cool down, stands obtain mixing after mixing；
(3) mixing is transferred to extruding production line hopper by feeding system, after twin-screw extrusion melts, then through granulation die into
Row is granulated；
(4) it is delivered to injection molding machine through feeding system, injection molding, cooling and shaping are at tubing.
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| CN201811459390.3A CN109535605A (en) | 2018-11-30 | 2018-11-30 | Transparent type PVC-U electrician formula |
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| CN201811459390.3A CN109535605A (en) | 2018-11-30 | 2018-11-30 | Transparent type PVC-U electrician formula |
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| CN101696308A (en) * | 2009-10-27 | 2010-04-21 | 广东联塑科技实业有限公司 | Polyvinyl chloride composition and transparent pipe thereof |
| CN102977498A (en) * | 2012-12-04 | 2013-03-20 | 安徽康嘉塑胶建材有限公司 | Polyvinyl chloride (PVC) composite electrical sleeve |
| US20150267025A1 (en) * | 2014-03-21 | 2015-09-24 | Zhejiang Tianzhen Bamboo & Wood Development Co., Ltd. | Pvc composite material, foam board, production method and apparatus thereof, and flooring |
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