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WO2022073403A1 - Polyéther combiné à l'eau, mousse en blocs de polyuréthane hautement ignifuge dérivée de celui-ci et utilisée pour le gnl, et son procédé de préparation - Google Patents

Polyéther combiné à l'eau, mousse en blocs de polyuréthane hautement ignifuge dérivée de celui-ci et utilisée pour le gnl, et son procédé de préparation Download PDF

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Publication number
WO2022073403A1
WO2022073403A1 PCT/CN2021/116167 CN2021116167W WO2022073403A1 WO 2022073403 A1 WO2022073403 A1 WO 2022073403A1 CN 2021116167 W CN2021116167 W CN 2021116167W WO 2022073403 A1 WO2022073403 A1 WO 2022073403A1
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WO
WIPO (PCT)
Prior art keywords
parts
polyether
combined polyether
polyol
lng
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2021/116167
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English (en)
Chinese (zh)
Inventor
李学庆
王光辉
李丽
魏路
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Dongda Polyureathane Co Ltd
Original Assignee
Shanghai Dongda Polyureathane Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Dongda Polyureathane Co Ltd filed Critical Shanghai Dongda Polyureathane Co Ltd
Priority to KR1020237015770A priority Critical patent/KR102668981B1/ko
Publication of WO2022073403A1 publication Critical patent/WO2022073403A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
    • C08G18/4018—Mixtures of compounds of group C08G18/42 with compounds of group C08G18/48
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
    • C08G18/4202—Two or more polyesters of different physical or chemical nature
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4804—Two or more polyethers of different physical or chemical nature
    • C08G18/4816—Two or more polyethers of different physical or chemical nature mixtures of two or more polyetherpolyols having at least three hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
    • C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
    • C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/49—Phosphorus-containing compounds
    • C08K5/51—Phosphorus bound to oxygen
    • C08K5/52—Phosphorus bound to oxygen only
    • C08K5/521—Esters of phosphoric acids, e.g. of H3PO4
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00—Foam properties
    • C08G2110/0083—Foam properties prepared using water as the sole blowing agent

Definitions

  • the present application relates to the technical field of polyurethane. Specifically, the present application relates to an all-water composite polyether, a high flame-retardant LNG-use polyurethane block foam derived therefrom, and a preparation method thereof.
  • Polyurethane foam is a high molecular polymer formed by chemical reaction with polyol (polyether or polyester polyol) and isocyanate as the main raw materials, under the action of surfactants, catalysts, foaming agents and many other additives.
  • Box-type block foam is an important application field of polyurethane. Its cut tube shells and special-shaped parts have a large market share in the market as LNG cold insulation materials. LNG cold insulation materials have higher requirements for foam, especially resistance Flammability, compressive strength and dimensional stability requirements are extremely stringent.
  • HFC-141b As a foaming agent, most of the block foams on the market currently use HCFC-141b as a foaming agent. However, because HCFC-141b will destroy the ozone layer and the greenhouse effect is also high, the world will completely ban the use of HCFCs in 2030, and my country will ban its use in 2025. Substitutes for HCFC-141b, such as HFCs (such as HFC-245fa, HFC-365mfc), C5 (such as CP, IP, NP), HFO (HFO-1234ze), etc., have their own shortcomings: HFCs have high greenhouse effect and price It is more expensive.
  • HFCs such as HFC-245fa, HFC-365mfc
  • C5 such as CP, IP, NP
  • HFO HFO-1234ze
  • water As a foaming agent, water is absolutely safe and environmentally friendly. It is the most ideal foaming agent, but water foaming also has defects, such as high viscosity of the composition, poor foam strength, dimensional stability, high thermal conductivity, and the whole water system due to The isocyanate index is low, and the oxygen index is difficult to reach more than 30%. Even if the oxygen index of 30% is achieved by adding flame retardants, other properties of the foam will be greatly attenuated. Finely tuned and designed.
  • the technical problem to be solved by the present invention is the problems of poor mold opening, compressive strength, dimensional stability and thermal conductivity of the polyurethane block foam for LNG prepared by all-water combined polyether.
  • System high flame retardant combined polyether polyol
  • a method for preparing polyurethane foam for LNG using the combined polyether polyol The polyurethane block foam for LNG prepared in the present application adopts a special formula system to reduce the viscosity of the combined material of the all-water foaming system, and improve the mold opening, compressive strength, dimensional stability and thermal conductivity of the polyurethane block foam.
  • the all-water composite polyether polyols described herein include specialty polyesters, reactive flame-retardant polyethers, high-functionality polyethers, ultra-low conductive surfactants, catalysts, and the like.
  • the present application provides the following technical solutions.
  • the present application provides a combined polyether, which is characterized in that, in parts by weight, it comprises the following raw material components: 45-55 parts of the first polyester polyol, 20-30 parts of the second Polyester polyol, 10-20 parts of first polyether polyol, 5 parts of second polyether polyol, 2-3 parts of foam stabilizer, 2.5-5 parts of catalyst, 25-35 parts of flame retardant, 5-6 parts of water;
  • the functionality of the first polyester polyol is 2, the hydroxyl value is 230-250 mgKOH/g, the viscosity at 25°C is 2000-4500 mPa ⁇ s, and the moisture content is less than 0.15wt%;
  • the functionality of the second polyester polyol is 2-3, the hydroxyl value is 280-310 mgKOH/g, the viscosity at 25°C is 2000-4500 mPa ⁇ s, and the moisture content is less than 0.15wt%;
  • the first polyether polyol is a reactive flame retardant polyether, its functionality is 3, its hydroxyl value is 180-220 mgKOH/g, its viscosity at 25°C is 1000-2500 mPa ⁇ s, and its moisture content is less than 0.15wt. %;
  • the second polyether polyol is a high-functionality polyether polyol, its functionality is 7, its hydroxyl value is 245-275 mgKOH/g, its viscosity at 25°C is 2100-3100 mPa ⁇ s, and its moisture content is less than 0.2 wt%;
  • the viscosity of the foam stabilizer at 25° C. is 900-1800 mPa ⁇ s
  • the specific gravity at 25° C. is 1.04-1.06 g/ml
  • the moisture content is less than 0.3 wt %.
  • the first polyester polyol is polyester polyol PS-2412 provided by Nanjing Jinling Stepan Chemical Co., Ltd.;
  • the second polyester polyol is polyester polyol PS-3158 provided by Nanjing Jinling Stepan Chemical Co., Ltd.;
  • the first polyether polyol is reactive flame retardant polyether polyol FR-912 provided by Shanghai Dongda Chemical Co., Ltd.;
  • the second polyether polyol is the polyether polyol Donol G1500 provided by Shanghai Dongda Chemical Co., Ltd.;
  • the foam stabilizer is foam stabilizer S-884 provided by Shanghai Maihao Chemical Technology Co., Ltd.
  • the catalyst is an amine catalyst and/or an organometallic catalyst.
  • the flame retardant comprises tris(2-chloropropyl) phosphate and/or triethyl phosphate.
  • the water is deionized water.
  • the catalyst comprises N,N'-dimethylcyclohexylamine, potassium isooctanoate K-15, quaternary ammonium salt catalyst TMR-2, and trimerization catalyst
  • the composite catalyst of JXP-508, wherein the mass ratio of N,N'-dimethylcyclohexylamine, potassium isooctanoate K-15, quaternary ammonium salt catalyst TMR-2 and JXP-508 is preferably 0.2-0.5:1.0 -2.0: 0.3-0.5: 1.0-2.0.
  • the present application provides a method for preparing the combined polyether according to the first aspect, the method comprising pouring each raw material component of the combined polyether into a container and mixing uniformly.
  • pouring each raw material component of the combined polyether into a container and mixing evenly includes adding each raw material component of the polyether to a temperature of 400°C under the condition of 15-30°C. Stir at a rotational speed of ⁇ 600r/min for 0.8 ⁇ 1.2h.
  • the present application provides a polyurethane block foam for LNG, which is made of isocyanate and the combined polyether according to any one of claims 1-4, and the mass ratio of the combined polyether and isocyanate is 1 : 1.5 to 2.0.
  • the isocyanate is diphenylmethane diisocyanate, preferably PM400, with a viscosity of 400 mpa.s and a -NCO content of 30.5-32%, purchased from Wanhua Chemical.
  • the present application provides a method for preparing a polyurethane block foam for LNG, comprising the following steps: adding isocyanate to a container in proportion, mixing with the combined polyether evenly, pouring it into a preheated temperature to 35-40° C. Then put it into a 50-60 °C drying room for a period of time, and then put it into a 20-30 °C constant temperature room for further curing to obtain a polyurethane block foam for LNG.
  • the curing time in the drying room is 1-2 hours, and the curing time in the constant temperature room is 10-12 hours.
  • the foaming agent used by the combined polyether of the present application is all water, which belongs to the environment-friendly type, the ozone depletion potential value (ODP) is 0, and the greenhouse effect value is the lowest at present;
  • the combined polyether of this application adopts a special formula system (special polyester, reactive flame retardant polyether, high-functionality polyether, ultra-low conductive surfactant, special catalyst, etc.) to reduce the total water foaming system.
  • a special formula system special polyester, reactive flame retardant polyether, high-functionality polyether, ultra-low conductive surfactant, special catalyst, etc.
  • Numerical ranges in this application are approximations and therefore may include values outside the range unless otherwise indicated. Numerical ranges include all values from the lower value to the upper value in 1 unit increments, provided that there is a separation of at least 2 units between any lower value and any higher value. For example, if a composition, physical or other property (eg, molecular weight, melt index, etc.) is recited as 100 to 1000, it is meant that all individual numbers, eg, 100, 101, 102, etc., and all subranges, eg, 100 to 100, are expressly recited 166, 155 to 170, 198 to 200, etc.
  • a composition, physical or other property eg, molecular weight, melt index, etc.
  • compositions in this application using the terms “comprising”, “including”, or “having” may contain any additional additives, adjuvants or compounds unless expressly stated otherwise.
  • compositions in this application using the terms “comprising”, “including”, or “having” may contain any additional additives, adjuvants or compounds unless expressly stated otherwise.
  • the term “consisting essentially of” excludes any other component, step or process from the scope of any such term recited below, except those necessary for operational performance.
  • the term “consisting of” does not include any component, step or process not specifically described or listed. Unless expressly stated otherwise, the term “or” refers to the listed members individually or in any combination.
  • This standard specifies the method for determining the compressive strength of rigid foam plastics and its relative deformation, compressive stress and compressive elastic modulus when the relative deformation is 10%.
  • This standard specifies a method for determining the dimensional stability of rigid foam plastics under conditions of specified temperature and relative humidity.
  • This standard specifies the terms and definitions of building materials and products, flammability grades, flammability grade criteria, flammability grade marks and inspection reports.
  • This standard applies to the classification and determination of combustion performance of building materials, decoration materials and products used in construction projects.
  • the present application provides a combined polyether comprising the following components in parts by weight: 45-55 parts of polyester polyol PS-2412, 20-30 parts of polyester polyol PS -3158, 10-20 parts of reactive flame retardant polyether polyol FR-912, 5 parts of high-functionality polyether Donol G1500, 2-3 parts of foam stabilizer S-884, 2-5 parts of catalyst, 25-35 parts Flame retardant, 5 to 6 parts of water.
  • PS-2412 has a functionality of 2, a hydroxyl value of 230-250 mgKOH/g, and a viscosity of 2000 to 4500 mPa ⁇ s at 25°C; PS-3158, a functionality of more than 2 (2-3), and a hydroxyl value of 280 -310mgKOH/g, viscosity at 25°C is 2000 ⁇ 4500mPa ⁇ s; FR-912, its functionality is about 3, hydroxyl value is 180-220mgKOH/g, viscosity at 25°C is 1000 ⁇ 2500mPa ⁇ s ; Donol G1500, its functionality is about 7, the hydroxyl value is 245-275mgKOH/g, and the viscosity at 25°C is 2100-3100mPa ⁇ s.
  • the sum of the parts by mass of the polyester polyol and the polyether polyol is 100 parts.
  • the foaming agent used in the combined polyether of the present application is water, and the obtained polyurethane has an ozone depletion potential value (ODP) of 0, which can be applied to the production of environment-friendly LNG block foam.
  • ODP ozone depletion potential value
  • the The combined polyether uses special polyester PS-3158 (high functionality), reactive flame retardant polyether FR-912 (the flame retardant component is attached to the polyurethane molecular structure), high functionality polyether Donol G1500 by designing a special formula (high strength, excellent dimensional stability), ultra-low conductive surfactant S-884 (optimize cell structure, reduce thermal conductivity), special catalyst JXP-508 (form more nitrogen-carbon six-membered heterocycle, improve strength ), the produced LNG blocks have excellent compressive strength, dimensional stability and oxygen index. Meet the requirements of national standards GB6343-1995, GB8813-2008 and GB8811-2008.
  • the LNG block bubble prepared according to the embodiment of the present application has a compressive strength of more than 200KPa in all directions, an oxygen index of more than 30%, a high temperature dimensional change rate of less than 0.54% at 100°C and 24 hours, and a low temperature dimensional change rate of -30°C and 24 hours. less than 0.42%.
  • the viscosity of the polyether polyol and polyester polyol may each independently be a viscosity conventional in the art, such as a kinematic viscosity.
  • the dynamic viscosity is generally measured with a rotational viscometer.
  • the polyester polyol PS-2412 is provided by Nanjing Jinling Stepan Chemical Co., Ltd., its functionality is 2, its hydroxyl value is 230-250 mgKOH/g, and its viscosity at 25°C is 2000-4500 mPa ⁇ s, the moisture content is less than 0.15wt%.
  • the polyester polyol PS-3158 is provided by Nanjing Jinling Stepan Chemical Co., Ltd., its functionality is greater than 2 (2-3), the hydroxyl value is 280-310 mgKOH/g, and the viscosity at 25°C It is 2000 ⁇ 4500mPa ⁇ s, and the moisture content is less than 0.15wt%.
  • the reactive flame retardant polyether polyol FR-912 is provided by Shanghai Dongda Chemical Co., Ltd., which has a functionality of about 3, a hydroxyl value of 180-220 mgKOH/g, and a viscosity of 1000 at 25°C. ⁇ 2500mPa ⁇ s, moisture less than 0.15wt%.
  • the polyether polyol Donol G1500 is provided by Shanghai Dongda Chemical Co., Ltd., its functionality is about 7, its hydroxyl value is 245-275 mgKOH/g, and its viscosity at 25°C is 2100-3100 mPa ⁇ s, Moisture is less than 0.2 wt%.
  • polyether polyol/polyester polyol including but not limited to functionality, viscosity, etc.
  • the selection and ratio of polyether polyol/polyester polyol directly affect the performance of polyurethane foam materials.
  • high-functionality polyester PS-3158 reactive flame retardant FR-912, high-functionality polyether Donol G1500, low-conductivity surfactant S-884, and special catalyst JXP-508 are added to the combined polyether system.
  • the compressive strength of the foam in all directions reaches more than 200KPa
  • the dimensional change rate at high temperature at 100°C and 24 hours is less than 0.54%
  • the dimensional change rate at low temperature at -30°C and 24 hours is less than 0.42%.
  • the foam stabilizer S-884 is provided by Shanghai Maihao Chemical Technology Co., Ltd., the viscosity at 25°C is 900-1800 mPa ⁇ s, the specific gravity at 25°C is 1.04-1.06g/ml, the moisture content less than 0.3 wt%.
  • the flame retardant is a flame retardant conventionally used in the art.
  • the flame retardant includes tris(2-chloropropyl) phosphate (TCPP), triethyl phosphate (TEP).
  • the water is preferably deionized water.
  • the catalyst is a catalyst conventionally used in the art.
  • the catalyst is an amine catalyst or an organometallic catalyst, including N,N'-dimethylcyclohexylamine, potassium isooctanoate K-15, quaternary ammonium salt catalyst TMR-2, trimerization catalyst JXP-508.
  • the catalyst includes N,N'-dimethylcyclohexylamine, potassium isooctanoate K-15, quaternary ammonium salt catalyst TMR-2, trimerization catalyst
  • the composite catalyst of JXP-508, wherein, N,N'-dimethylcyclohexylamine, potassium isooctanoate K-15, quaternary ammonium salt catalyst TMR-2 and trimerization catalyst The mass ratio of JXP-508 is 0.2-0.5:1.0-2.0:0.3 ⁇ 0.5:1.0-2.0.
  • the present application also provides a method for preparing a combined polyether, which includes pouring the above components of the combined polyether into a container and mixing evenly.
  • pouring each component of the above-mentioned combined polyether into a container and mixing evenly includes stirring each component of the above-mentioned polyether at a temperature of 15-30° C. at a rotational speed of 400-600 r/min for 0.8- 1.2h.
  • the present application also provides a method for preparing a polyurethane block foam for LNG, which comprises the following steps: adding isocyanate into a container in proportion, and after mixing with the combined polyether evenly, pouring into a preheated 35- 40 °C mold, and then pulled into a 50-60 °C drying room for curing for a period of time, and then put into a 20-30 °C constant temperature room for further curing, that is, the polyurethane block foam for LNG is obtained.
  • the mass ratio of the combined polyether and isocyanate is 1:1.5-2.0.
  • the isocyanate is diphenylmethane diisocyanate
  • the model is PM400
  • the viscosity is 400 mpa.s
  • the -NCO content is 30.5-32%, purchased from Wanhua Chemical.
  • the mold temperature ranges from 50 to 60°C.
  • the reagents and raw materials used in the present invention are all commercially available.
  • the percentage in the present invention is the mass percentage of each component in the total amount of raw materials.
  • Polyester polyol PS-2412 purchased from Nanjing Jinling Stepan Chemical Co., Ltd.
  • Polyester polyol PS-3158 purchased from Nanjing Jinling Stepan Chemical Co., Ltd.
  • Reactive flame retardant polyether polyol FR-912 was purchased from Shanghai Dongda Chemical Co., Ltd.
  • Polyether polyol Donol G1500 purchased from Shanghai Dongda Chemical Co., Ltd.
  • Ultra-low conductivity foam stabilizer S-884 was purchased from Shanghai Maihao Chemical Technology Co., Ltd.
  • Diphenylmethane diisocyanate purchased from Wanhua, Yantai, model PM400.
  • test standards of each test item are as follows:
  • polyurethane foam for LNG was prepared by the following method:
  • the components in the combined polyether are poured into the container according to the specified proportion, and the combined polyether polyol is obtained by stirring at a speed of 400-600 r/min for 0.8-1.2 h under the condition of 15-30 °C.
  • a preparation method of polyurethane block foam for LNG in an all-water foaming system comprising the following steps:
  • a preparation method of polyurethane block foam for LNG in an all-water foaming system comprising the following steps:
  • a preparation method of polyurethane block foam for LNG in an all-water foaming system comprising the following steps:
  • a preparation method of polyurethane block foam comprising the following steps:
  • polyester polyol PS-2412 2.5 parts of foam stabilizer S-884, catalyst: 0.2 parts of N,N'-dimethylcyclohexylamine, 1.8 parts of K-15, 0.4 parts of TMR-2 , 1.5 parts of JXP-508, 5.5 parts of water, 18 parts of flame retardant TCPP, and 10 parts of flame retardant TEP were added to the stainless steel mixing kettle, stirred at room temperature for 1 hour at a speed of 500 rpm, and discharged to obtain a full water type Combined polyether for block foam;
  • a preparation method of polyurethane block foam comprising the following steps:
  • polyester polyol PS-2412 100 parts of polyester polyol PS-2412, 3 parts of foam stabilizer BL-8525, catalyst: 0.4 part of N,N'-dimethylcyclohexylamine, 1.5 part of K-15, 0.5 part of TMR-2 , 5.8 parts of water, 15 parts of flame retardant TCPP, and 15 parts of flame retardant TEP were added into the stainless steel mixing kettle, stirred at a speed of 500 rpm for 1 hour at room temperature, and discharged to obtain a combination polyether for all-water block foam ;
  • the block foam for environmental protection LNG prepared according to the embodiment of the present application has obvious improvement in mold opening and production efficiency.
  • the dimensional change rate at high temperature in one hour is less than 0.54%, and the dimensional change rate at -30°C and 24 hours at low temperature is less than 0.42%.
  • the thermal conductivity at low temperature is 24.48mW/m ⁇ K.
  • the raw materials used in this application are all commercially available raw materials, and the raw materials are widely sourced and can be produced on a large scale.

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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)
  • Polyurethanes Or Polyureas (AREA)

Abstract

La présente demande concerne un polyéther combiné. Le polyéther combiné comprend les composants de matière première suivants en parties en poids : de 45 à 55 parties d'un premier polyol de polyester, de 20 à 30 parties d'un second polyol de polyester, de 10 à 20 parties d'un premier polyol de polyéther, 5 parties d'un second polyol de polyéther, de 2 à 3 parties d'un stabilisateur de mousse, de 2,5 à 5 parties d'un catalyseur, de 25 à 35 parties d'un retardateur de flamme, et de 5 à 6 parties d'eau. La présente demande concerne également un procédé de préparation du polyéther combiné. La présente demande concerne en outre une mousse en blocs de polyuréthane hautement ignifuge préparée à partir du polyéther combiné et utilisée pour le GNL, et son procédé de préparation. L'agent moussant utilisé pour le polyéther combiné de la présente invention est l'eau et est respectueux de l'environnement; la valeur du potentiel d'appauvrissement en ozone est de 0; la valeur d'effet de serre est la plus faible actuellement; et la mousse en blocs d'uréthane préparée présente de bonnes propriétés ignifuges, d'ouverture de moule, de résistance à la compression et de stabilité dimensionnelle, et a un faible coefficient de conductivité thermique.
PCT/CN2021/116167 2020-10-10 2021-09-02 Polyéther combiné à l'eau, mousse en blocs de polyuréthane hautement ignifuge dérivée de celui-ci et utilisée pour le gnl, et son procédé de préparation Ceased WO2022073403A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020237015770A KR102668981B1 (ko) 2020-10-10 2021-09-02 전수 폴리에테르 폴리올 조합물, 이로부터 유래된 고난연성 lng용 폴리우레탄 폼블록 및 그 제조방법

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202011077554.3A CN112239531B (zh) 2020-10-10 2020-10-10 全水组合聚醚、源自其的高阻燃lng用聚氨酯块泡及其制备方法
CN202011077554.3 2020-10-10

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