WO2023030317A1 - 低粘度反应型阻燃聚醚多元醇及其制备方法和应用 - Google Patents

低粘度反应型阻燃聚醚多元醇及其制备方法和应用 Download PDF

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WO2023030317A1
WO2023030317A1 PCT/CN2022/115840 CN2022115840W WO2023030317A1 WO 2023030317 A1 WO2023030317 A1 WO 2023030317A1 CN 2022115840 W CN2022115840 W CN 2022115840W WO 2023030317 A1 WO2023030317 A1 WO 2023030317A1
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retardant
polyether polyol
low
reactive flame
flame
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PCT/CN2022/115840
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English (en)
French (fr)
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李健
戈欢
孙兆任
李剑锋
栾森
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山东一诺威新材料有限公司
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Publication of WO2023030317A1 publication Critical patent/WO2023030317A1/zh

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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
    • C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/26—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds
    • C08G65/2639—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing elements other than oxygen, nitrogen or sulfur
    • 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
    • C08G18/08—Processes
    • C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
    • C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
    • 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
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
    • C08G18/3203—Polyhydroxy compounds
    • C08G18/3206—Polyhydroxy compounds aliphatic
    • 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
    • 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
    • C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
    • C08G18/6666—Compounds of group C08G18/48 or C08G18/52
    • C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
    • C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
    • 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
    • C08G18/71—Monoisocyanates or monoisothiocyanates
    • C08G18/718—Monoisocyanates or monoisothiocyanates containing silicon
    • 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
    • C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/26—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds
    • C08G65/2603—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen
    • C08G65/2606—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen containing hydroxyl groups
    • C08G65/2609—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen containing hydroxyl groups containing aliphatic hydroxyl 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
    • C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/26—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds
    • C08G65/2603—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen
    • C08G65/2606—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen containing hydroxyl groups
    • C08G65/2612—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen containing hydroxyl groups containing aromatic or arylaliphatic hydroxyl 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
    • C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/26—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds
    • C08G65/2642—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds characterised by the catalyst used
    • C08G65/2645—Metals or compounds thereof, e.g. salts
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/04—Non-macromolecular additives inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/08—Macromolecular additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04—Polyurethanes
    • C09J175/08—Polyurethanes from polyethers

Definitions

  • the invention relates to a low-viscosity reactive flame-retardant polyether polyol and a preparation method and application thereof, belonging to the technical field of polyurethane.
  • the polyurethane material is a flammable material; at the same time, the polyurethane potting compound cannot effectively conduct the heat generated by the working process of the electronic components, which reduces its use. performance. Therefore, the preparation of thermally conductive and flame-retardant electronic potting adhesives has become a research hotspot.
  • the technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide a method for preparing a low-viscosity reactive flame-retardant polyether polyol, which is simple and easy to operate, without post-processing, and the prepared polyether polyol
  • the viscosity is moderate;
  • a reactive flame-retardant and thermally conductive polyurethane electronic potting compound is also provided, which has excellent flame-retardant performance and thermal conductivity; and the invention also provides a simple and easy preparation method.
  • the composition of the composite starter is, in parts by weight, 1 part of low molecular weight polyether, 1-2 parts of bisphenol A polyether and 1-3 parts of halogen-containing aromatic alcohol/phenol.
  • the bimetallic catalyst is used in an amount of 30-1000 ppm.
  • the functionality of the low molecular weight polyether is 2-3, 500 ⁇ Mn ⁇ 1000.
  • the low molecular weight polyether has a functionality of 2 and an Mn of 400.
  • the halogen-containing aromatic alcohol/phenol is 2,3-dibromo-4,5-dihydroxybenzyl alcohol, 2,4-dichlorobenzyl alcohol, 5-chloro-2-hydroxybenzyl alcohol, 3-( One or more of 3-bromophenyl)-2-propyn-1-ol, tetrabromobisphenol A, 5-bromo-2-hydroxybenzyl alcohol or tribromophenol.
  • the low-viscosity reactive flame-retardant polyether polyol of the present invention is prepared by the above-mentioned method.
  • the reactive flame-retardant thermally conductive polyurethane electronic potting compound prepared by using the above-mentioned low-viscosity reactive flame-retardant polyether polyol, including A component and B component, wherein,
  • Component A including diisocyanate, isocyanate-based cage polysilsesquioxane, polyoxypropylene polyether polyol, polytetrahydrofuran ether polyol, plasticizer;
  • the isocyanate-based cage polysilsesquioxane is prepared by reacting a tetrahydrofuran solution of diisocyanate and hydroxyl-terminated cage-type silsesquioxane, wherein the mass percentage of hydroxyl-terminated cage-type silsesquioxane is 30-50%, and the reaction
  • the temperature is 60-80°C; preferably, the mass percentage of hydroxycage silsesquioxane is 40%.
  • the low-viscosity reactive flame-retardant polyether polyol has a functionality of 2-3, a hydroxyl value of 56-165 mg KOH/g, and a viscosity of 700-15500 mpa ⁇ s.
  • component A contains the following raw materials in mass percent:
  • the diisocyanate is one or more of diphenylmethane diisocyanate, HDI, IPDI or toluene diisocyanate.
  • the usage amount is more preferably 40%.
  • the plasticizer is one or more of dioctyl phthalate, dioctyl sebacate, trioctyl trimellitate, epoxidized soybean oil or dibutyl phthalate. More preferred is dioctyl phthalate.
  • the polyoxypropylene ether polyol has a number average molecular weight of 1000-6000 and a functionality of 2 or 3.
  • the polytetrahydrofuran ether polyol has a number average molecular weight of 1000-2000 and a functionality of 2.
  • component B contains the following raw materials in mass percent:
  • the chain extender is one or more of ethylene glycol, 1,4-butanediol, diethylene glycol, 1,3-propanediol, dipropylene glycol or 1,6-hexanediol kind. More preferably, it is 1,4-butanediol.
  • the thermally conductive filler is one or more of fibrous high thermally conductive carbon powder, flaky high thermally conductive carbon powder or ⁇ -alumina. More preferably, it is flaky high thermal conductivity carbon powder.
  • the antioxidant is one or more of 1076, 1010, 1135, 318 or 339.
  • the number average molecular weight of the defoamer polyether polyol is 1000-5000, and the functionality is 1-3.
  • component B (2) Put the chain extender, polyoxypropylene ether polyol, reactive flame retardant polyether polyol, thermally conductive filler, defoamer polyether polyol, catalyst, and antioxidant in the formula amount at 100-110°C, - Vacuum dehydration below 0.095MPa until the water content is less than 0.03%, to obtain component B;
  • low-viscosity reactive flame-retardant polyether polyol of the present invention is used in the preparation of polyurethane flame-retardant rigid foam composite material, polyurethane flame-retardant foam glue or polyurethane flame-retardant elastomer.
  • the present invention has the following beneficial effects:
  • the present invention adopts bimetallic catalyst (bimetallic catalyst can be added, also can adopt the bisphenol A polyether that adopts bimetallic catalyst) to prepare low-viscosity flame-retardant polyether polyol by one-step method, without aftertreatment process, preparation
  • the method is simple, the discharge of three wastes is small, the viscosity is moderate, and it is suitable for industrial production;
  • the reaction (structure) flame-retardant polyether is prepared by introducing flame-retardant bromine into the co-initiator, and there is no migration of small molecules;
  • the introduced benzene ring structure can effectively improve the polyurethane heat resistance of the network;
  • a defoamer polyether polyol is added, which has good mutual solubility in the encapsulant system, and can effectively reduce a large amount of air bubbles produced when components A and B are mixed on the one hand , on the other hand, as a surfactant, it can quickly defoam;
  • the added heat-conducting filler uses heat-conducting particles with a two-dimensional structure, which can effectively increase the heat transfer area and effectively improve the thermal conductivity of the electronic potting compound.
  • Polytetrahydrofuran ether polyol PTMG2000 has a functionality of 2 and a molecular weight of 2000.
  • Polyether polyols are produced by Yinuowei New Material Co., Ltd., and the specific grades are as follows:
  • INOVOL C305 (3 functionality 500 molecular weight);
  • INOVOL C310 (3 functionality 1000 molecular weight).
  • INOVOL F3600 (3 functionality 6000 molecular weight);
  • INOVOL F330N (3 functionality 5000 molecular weight);
  • INOVOL C220 (2 functionality 2000 molecular weight);
  • Component A (mass percentage): MDI 40%, isocyanate cage polysilsesquioxane 10%, PTMG1000 10%, C210 10%, F330N 10%, C230 5%, dioctyl phthalate 15% , reacted at 80°C for 1 hour to obtain a prepolymer with an isocyanate content of 11%;
  • Component B (mass percentage): reactive flame retardant polyether polyol 15%, chain extender 1,4-butanediol 10%, fibrous high thermal conductivity carbon powder 20%, defoamer polyether S01X 10%, F3600 15%, C230 15%, C240A 14%, dibutyltin dilaurate: 0.2%, antioxidant 1076: 0.8%, vacuum dehydration at 100°C and below -0.095MPa until the moisture is less than 0.03%.
  • Components A and B are in a mass ratio of 100:110, and the mixing temperature is 40°C. After mixing, they are cast into a mold at a temperature of 30°C for reaction, and after curing at room temperature for 7 days, polyurethane elastomer products are obtained for use in testing.
  • Component A (mass percentage): HDI 38%, isocyanate cage polysilsesquioxane 12%, PTMG1000 15%, C220 10%, F330N 8%, C230 9%, dioctyl phthalate 8% ;Reacted at 80°C for 1.5 hours to obtain a prepolymer with an isocyanate content of 14.4%;
  • Component B (mass percentage): reactive flame retardant polyether polyol 20%, chain extender 1,4-butanediol 12%, fibrous high thermal conductivity carbon powder 15%, defoamer polyether S02X 8%, F3600 13%, C230 13%, C240A 10%, C240A 8%, catalyst dibutyltin dilaurate: 0.3%, antioxidant 1010: 0.7%, vacuum dehydration at 100°C and below -0.095MPa until the moisture is less than 0.03%.
  • Components A and B are in a mass ratio of 100:100, and the mixing temperature is 40°C. After mixing, they are cast into a mold at a temperature of 30°C for reaction. After curing at room temperature for 7 days, polyurethane elastomer products are prepared for testing.
  • the tested polyether has a hydroxyl value of 80mg KOH/g and a viscosity of 6420mpa ⁇ s.
  • Components A and B are in a mass ratio of 100:100, and the mixing temperature is 40°C. After mixing, they are cast into a mold at a temperature of 30°C for reaction. After curing at room temperature for 7 days, polyurethane elastomer products are prepared for testing.
  • the tested polyether has a hydroxyl value of 56.1mg KOH/g and a viscosity of 1100mpa ⁇ s.
  • Component A (mass percentage): MDI-50 37%, isocyanate polysilsesquioxane 12%, PTMG2000 10%, C230 8%, F3600 10%, C240A 5%, trioctyl trimellitate 18% ;Reacted at 80°C for 1.5 hours to obtain a prepolymer with an isocyanate content of 11.2%;
  • Component B (mass percentage): low-viscosity reactive flame-retardant polyether polyol 22%, chain extender ethylene glycol 9%, fibrous high thermal conductivity carbon powder 18%, defoamer polyether S1200 9%, F3600 15 %, C230 15%, C240A 11.5%, Catalyst Dibutyltin Dilaurate: 0.2%, Antioxidant 1135: 0.3%. Vacuum dehydration at 105°C and below -0.095MPa until the water content is less than 0.03%.
  • Components A and B are in a mass ratio of 100:120, and the mixing temperature is 40°C. After mixing, they are cast into a mold at a temperature of 30°C for reaction. After curing at room temperature for 7 days, polyurethane elastomer products are prepared for testing.
  • the tested polyether has a hydroxyl value of 75.6mg KOH/g and a viscosity of 4120mpa ⁇ s.
  • Component B (mass percentage): low-viscosity reactive flame-retardant polyether polyol 33%, chain extender 1,4-butanediol 9%, fibrous high thermal conductivity carbon powder 20%, defoamer polyether S1200 5 %, F330N 10%, C230 10%, C240A 12.2%, catalyst dibutyltin dilaurate: 0.5%, antioxidant 1135: 0.3%. Vacuum dehydration at 105°C and below -0.095MPa until the water content is less than 0.03%.
  • Components A and B are in a mass ratio of 100:100, and the mixing temperature is 40°C. After mixing, they are cast into a mold at a temperature of 30°C for reaction. After curing at room temperature for 7 days, polyurethane elastomer products are prepared for testing.
  • the tested polyether has a hydroxyl value of 111mg KOH/g and a viscosity of 730mpa ⁇ s.
  • Component A (mass percentage): MDI 40%, isocyanate cage polysilsesquioxane 10%, PTMG1000 10%, C210 10%, F330N 10%, C230 5%, dioctyl phthalate 15% , reacted at 80°C for 1 hour to obtain a prepolymer with an isocyanate content of 11%;
  • Component B (mass percentage): reactive flame retardant polyether polyol 15%, chain extender 1,4-butanediol 10%, fibrous high thermal conductivity carbon powder 20%, defoamer polyether S01X 10%, F3600 15%, C230 15%, C240A 14%, dibutyltin dilaurate: 0.2%, antioxidant 1076: 0.8%, vacuum dehydration at 100°C and below -0.095MPa until the moisture is less than 0.03%.
  • Components A and B are in a mass ratio of 100:110, and the mixing temperature is 40°C. After mixing, they are cast into a mold at a temperature of 30°C for reaction, and after curing at room temperature for 7 days, polyurethane elastomer products are obtained for use in testing.
  • Component A (mass percentage): HDI 42%, PTMG1000 15%, C220 12%, F330N 11%, C230 12%, plasticizer 8%; reacted at 80°C for 1.5 hours, and obtained a preform with an isocyanate content of 14.4%. Polymer;
  • B component (mass percentage): reactive flame retardant polyether polyol 20% (flame retardant polyether polyol synthesized in Example 2), chain extender 1,4-butanediol 12%, fibrous high thermal conductivity Carbon powder 15%, defoamer polyether S02X 8%, F3600 13%, C230 13%, C240A 10%, C240A 8%, catalyst dibutyltin dilaurate: 0.3%, antioxidant 1010: 0.7%, at 100 °C, vacuum dehydration below -0.095MPa until the water content is less than 0.03%.
  • Viscosity is measured according to GB/T 12008.8-1992 standard;
  • Thermal conductivity is measured according to GB/T 3139-2005 standard.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Inorganic Chemistry (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

本发明涉及一种低粘度反应型阻燃聚醚多元醇及其制备方法和应用，属于聚氨酯技术领域。本发明以低分子量聚醚、双酚A聚醚和含卤素的芳香族醇/酚作为复合起始剂，在双金属催化剂的作用下，与环氧烷烃聚合反应，得到低粘度反应型阻燃聚醚多元醇。所述的灌封胶，A组分包括二异氰酸酯、异氰酸酯基笼型聚倍半硅氧烷、聚氧化丙烯聚醚多元醇、聚四氢呋喃醚多元醇、增塑剂；B组分包括扩链剂、低粘度反应型阻燃聚醚多元醇、消泡剂聚醚多元醇、导热填料、聚氧化丙烯聚醚多元醇、催化剂、抗氧剂；本发明制备的灌封胶具有优异的阻燃性能和导热性能；本发明同时提供了简单易行的制备方法。

Description

低粘度反应型阻燃聚醚多元醇及其制备方法和应用 技术领域
本发明涉及一种低粘度反应型阻燃聚醚多元醇及其制备方法和应用，属于聚氨酯技术领域。
背景技术
聚氨酯弹性体因其性能可调控性范围宽、抗紫外线、耐磨、耐溶剂等优异特性被广泛应用于体育、医疗、汽车、建筑等多个领域。聚氨酯弹性体根据加工工艺可以分为浇铸型和热塑型。作为浇铸型聚氨酯中的一种，聚氨酯灌封胶通过简单的灌封工艺即可室温固化成型，其优异的绝缘性保证了电池、电子元件及其配套器件正常运行。但是聚氨酯链段中化学键主要为碳氢键，键能较低容易断裂，根据燃烧等级分类聚氨酯材料属于易燃材料；同时聚氨酯灌封胶无法有效传导电子元件工作过程产生的热量，降低了其使用性能。因此，制备导热、阻燃型电子灌封胶成为研究的热点。
阻燃剂分为添加型和反应型阻燃剂，添加型阻燃电子灌封胶主要通过加入较大分数的磷酸酯类或低分子量卤素提高阻燃性能。CN111732927A提供了一种高硬度阻燃聚氨酯电子灌封胶及其制备方法，采用磷酸酯(A组分)和氯化石蜡-52(B组分)作为阻燃剂，灌封胶的阻燃等级可以达到V-0级。磷酸酯和氯化石蜡-52两种阻燃剂均为添加型，存在迁移性、有腐蚀电子器件危险；当磷酸酯比例较高时，则会降低材料韧性。CN111704886A公开了一种双组分高韧性阻燃聚氨酯电子灌封胶及其制备方法，同样采用磷酸三(2-氯丙基)酯、三(2-羧乙基)膦、异丙苯基二苯基磷酸酯、氯化石蜡-52、氯化石蜡-42等添加型阻燃剂达到V-0级阻燃；CN107216846A采用二溴新戊二醇与间苯二酚(双二苯基磷酸酯)混合物阻燃聚氨酯电子灌封胶，二溴新戊二醇价格昂贵且熔点较高(114-116℃)，不利用于工业化推广。
目前市售的反应型阻燃聚醚普遍价格较高且存在许多制约因素，如粘度较高(四溴苯酐二醇粘度为80000-125000mpa·s)；色值较深(一般为琥珀色或褐色)，影响聚氨酯材料的外观和使用性能。因此，研发低粘度反应型阻燃聚醚多元醇，用来制备阻燃导热型聚氨酯电子灌封胶成为亟待解决的问题。
发明内容
本发明要解决的技术问题是，克服现有技术中的不足，提供一种低粘度反应型阻燃聚醚多元醇的制备方法，其简单易操作，无后处理过程，制备的聚醚多元醇粘度适中；还提供了 一种反应型阻燃导热聚氨酯电子灌封胶，其具有优异的阻燃性能和导热性能；本发明同时提供了简单易行的制备方法。
本发明所述的低粘度反应型阻燃聚醚多元醇的制备方法，以低分子量聚醚、双酚A聚醚和含卤素的芳香族醇/酚作为复合起始剂，在双金属催化剂的作用下，与环氧烷烃聚合反应，得到所述的低粘度反应型阻燃聚醚多元醇。
优选的，复合起始剂组成，以重量份数计，1份低分子量聚醚、1-2份双酚A聚醚和1-3份含卤素的芳香族醇/酚。
优选的，双金属催化剂的用量为30-1000ppm。
优选的，130-140℃下聚合3-6h。
更优选的，所述的低粘度反应型阻燃聚醚多元醇的制备方法，以1份低分子量聚醚、1-2份双酚A聚醚和1-3份含卤素的芳香族醇/酚作为复合起始剂，在30-1000ppm双金属催化剂的作用下，与环氧烷烃聚合反应，130-140℃下聚合3-6h，得到所述的低粘度反应型阻燃聚醚多元醇。
优选的，低分子量聚醚的官能度为2-3，500≤Mn≤1000。
优选的，低分子量聚醚的官能度为2，Mn为400。
优选的，含卤素的芳香族醇/酚为2,3-二溴-4,5-二羟基苄醇、2,4-二氯苄醇、5-氯-2-羟基苯甲醇、3-(3-溴苯基)-2-丙炔-1-醇、四溴双酚A、5-溴-2-羟基苄醇或三溴苯酚中的一种或多种。
本发明所述的低粘度反应型阻燃聚醚多元醇，采用上述方法制得。
利用上述的低粘度反应型阻燃聚醚多元醇制备的反应型阻燃导热聚氨酯电子灌封胶，包括A组分和B组分，其中，
A组分：包括二异氰酸酯、异氰酸酯基笼型聚倍半硅氧烷、聚氧化丙烯聚醚多元醇、聚四氢呋喃醚多元醇、增塑剂；
B组分：包括扩链剂、低粘度反应型阻燃聚醚多元醇、消泡剂聚醚多元醇、导热填料、聚氧化丙烯聚醚多元醇、催化剂、抗氧剂；
所述异氰酸酯基笼型聚倍半硅氧烷由二异氰酸酯和端羟基笼型倍半硅氧烷的四氢呋喃溶液反应制备，其中端羟基笼型倍半硅氧烷质量百分数为30-50％，反应温度为60-80℃；优选的，羟基笼型倍半硅氧烷质量百分数为40％。
所述低粘度反应型阻燃聚醚多元醇官能度为2-3，羟值为56-165mg KOH/g，粘度为700-15500mpa·s。
优选的，A组分包含以下质量百分含量的原料：
Figure PCTCN2022115840-appb-000001
Figure PCTCN2022115840-appb-000002
优选的，二异氰酸酯为二苯基甲烷二异氰酸酯、HDI、IPDI或甲苯二异氰酸酯中的一种或多种。用量进一步优选为40％。
优选的，增塑剂为邻苯二甲酸二辛酯、癸二酸二辛酯、偏苯三酸三辛酯、环氧大豆油或邻苯二甲酸二丁酯中的一种或多种。进一步优选为邻苯二甲酸二辛酯。
优选的，聚氧化丙烯醚多元醇数均分子量为1000-6000，官能度为2或3。
优选的，聚四氢呋喃醚多元醇数均分子量为1000-2000，官能度为2。
优选的，B组分包含以下质量百分含量的原料：
Figure PCTCN2022115840-appb-000003
优选的，扩链剂为乙二醇、1,4-丁二醇、一缩二乙二醇、1,3-丙二醇、一缩二丙二醇或1,6-己二醇中的一种或多种。进一步优选为1,4-丁二醇。
优选的，导热填料为纤维状高导热碳粉、鳞片状高导热碳粉或α-氧化铝中的一种或多种。进一步优选为鳞片状高导热碳粉。
优选的，抗氧剂为1076、1010、1135、318或339中的一种或多种。
优选的，催化剂为有机锡、有机锌或有机锆中的一种或多种。
优选的，消泡剂聚醚多元醇数均分子量为1000-5000，官能度为1-3。
所述的反应型阻燃导热聚氨酯电子灌封胶的制备方法，包括以下步骤：
(1)先将配方量的聚氧化丙烯醚多元醇、聚四氢呋喃醚多元醇、二异氰酸酯、异氰酸酯基笼型聚倍半硅氧烷、增塑剂，在70-85℃反应1-3小时，得到异氰酸根含量为7.0-18.0wt％的预聚物，即得A组分；
(2)将配方量的扩链剂、聚氧化丙烯醚多元醇、反应型阻燃聚醚多元醇、导热填料、消泡剂聚醚多元醇、催化剂、抗氧化剂，在100-110℃、-0.095MPa以下真空脱水至水分小于 0.03％，即得B组分；
(3)将A、B组分按重量比100：90-120称量，混合温度在30-40℃，浇铸到温度为30-35℃的模具中反应，室温固化后即得到所述的反应型阻燃导热聚氨酯电子灌封胶。
本发明所述的低粘度反应型阻燃聚醚多元醇的应用，用于聚氨酯阻燃硬泡组合料、聚氨酯阻燃发泡胶或聚氨酯阻燃弹性体的制备。
与现有技术相比，本发明具有以下有益效果：
(1)本发明采用双金属催化剂(双金属催化剂可以外加，也可以采用含有采用双金属催化剂的双酚A聚醚)通过一步法制备低粘度阻燃聚醚多元醇，无后处理过程，制备方法简单、三废排放少，粘度适中，适于工业化生产；在共起始剂中引入阻燃溴元素制备反应(结构)阻燃聚醚，无小分子迁移；引入的苯环结构可以有效提高聚氨酯网络的耐热性；
(2)本发明制备灌封胶时，利用了异氰酸酯改性的笼型聚倍半硅氧烷，将Si-O结构掺杂到聚氨酯网络中，提高了灌封胶的高温使用性能，笼型结构作为交联点显著提高了聚氨酯网络的稳定性；
(3)本发明制备灌封胶时，加入了消泡剂聚醚多元醇，在灌封胶体系中具有很好的互溶性，一方面可以有效降低A、B组分混合时产生的大量气泡，另一方面作为一种表面活性剂可以快速脱泡；
(4)本发明制备灌封胶时，加入的导热填料使用二维结构导热粒子，能有效增加传热面积，有效提升了电子灌封胶的导热性能。
具体实施方式
下面结合实施例对本发明作进一步的说明，但其并不限制本发明的实施。
本发明配方体系中所用：
聚四氢呋喃醚多元醇PTMG1000官能度2，分子量1000；
聚四氢呋喃醚多元醇PTMG2000官能度2，分子量2000。
聚醚多元醇均为一诺威新材料有限公司生产，具体牌号如下：
低分子量聚醚多元醇系列:
INOVOL C204(2官能度400分子量)；
INOVOL C207(2官能度700分子量)；
INOVOL C305(3官能度500分子量)；
INOVOL C310(3官能度1000分子量)。
双酚A聚醚多元醇系列：
INOVOL S207H(2官能度700分子量)；
INOVOL S210H(2官能度1000分子量)；
INOVOL S220H(2官能度2000分子量)。
聚氧化丙烯醚多元醇系列：
INOVOL F3600(3官能度6000分子量)；
INOVOL F330N(3官能度5000分子量)；
INOVOL C210(2官能度1000分子量)；
INOVOL C220(2官能度2000分子量)；
INOVOL C230(2官能度3000分子量)；
INOVOL C240A(2官能度4000分子量)。
消泡剂聚醚多元醇系列：
INOVOL S01X；
INOVOL S02X；
INOVOL S1200。
实施例1
反应型阻燃聚醚多元醇制备：
将INOVOL C305 150g、双酚A聚醚S207H 150g、三溴苯酚330g加入到耐压容器中，氮气置换3遍后升温至110℃脱水2h，升温至135℃滴加环氧丙烷40g引发，压力降至-0.06MPa后慢速进料环氧丙烷360g，控制反应过程中压力小于0.30MPa，内压反应2h，脱单体0.5h，放料。
测试聚醚羟值110mg KOH/g，粘度为824mpa·s。
聚氨酯电子灌封胶制备：
A组分(质量百分数)：MDI 40％,异氰酸酯基笼型聚倍半硅氧烷10％,PTMG1000 10％，C210 10％,F330N 10％,C230 5％，邻苯二甲酸二辛酯15％，在80℃反应1小时，得到异氰酸根含量为11％的预聚物；
B组分(质量百分数)：反应型阻燃聚醚多元醇15％，扩链剂1,4-丁二醇10％，纤维状高导热碳粉20％，消泡剂聚醚S01X 10％,F3600 15％,C230 15％,C240A 14％，二月桂酸二丁基锡：0.2％，抗氧剂1076：0.8％，在100℃、-0.095MPa以下真空脱水至水分小于0.03％。
A组分和B组分按照质量配比在100：110，混合温度在40℃，混合后浇铸到温度为30℃的模具中反应，室温固化7天后得到聚氨酯弹性体制品备用测试。
实施例2
反应型阻燃聚醚多元醇制备：
将INOVOL C310 100g、双酚A聚醚S210H 100g、2,4-二氯苄醇265g，三溴苯酚50g,加入到耐压容器中，氮气置换3遍后升温至110℃脱水2h，升温至132℃滴加环氧丙烷62g引发，压力降至-0.04MPa后后慢速进料环氧丙烷388g，控制反应过程中压力小于0.30MPa，内压反应2h，脱单体0.5h,放料。
测试聚醚羟值153mg KOH/g，粘度为602mpa·s。
聚氨酯电子灌封胶制备：
A组分(质量百分数)：HDI 38％,异氰酸酯基笼型聚倍半硅氧烷12％,PTMG1000 15％，C220 10％,F330N 8％,C230 9％，邻苯二甲酸二辛酯8％；在80℃反应1.5小时，得到异氰酸根含量为14.4％的预聚物；
B组分(质量百分数)：反应型阻燃聚醚多元醇20％，扩链剂1,4-丁二醇12％，纤维状高导热碳粉15％，消泡剂聚醚S02X 8％,F3600 13％,C230 13％,C240A 10％，C240A 8％，催化剂二月桂酸二丁基锡：0.3％，抗氧剂1010：0.7％，在100℃、-0.095MPa以下真空脱水至水分小于0.03％。
A组分和B组分按照质量配比在100：100，混合温度在40℃，混合后浇铸到温度为30℃的模具中反应，室温固化7天后得到聚氨酯弹性体制品备用测试。
实施例3
反应型阻燃聚醚多元醇制备：
将INOVOL C204 100g、双酚A聚醚S220H 120g、四溴双酚A 300g加入到耐压容器中，氮气置换3遍后升温至110℃脱水2h，升温至130℃滴加环氧丙烷50g引发，压力降至-0.07MPa后慢速进料环氧丙烷850g，控制反应过程中压力小于0.30MPa，内压反应2h，脱单体0.5h,放料。
测试聚醚羟值80mg KOH/g，粘度为6420mpa·s。
聚氨酯电子灌封胶制备：
A组分(质量百分数)：MDI-50 40％,异氰酸酯基笼型聚倍半硅氧烷11％,PTMG200010％，C210 7％,F330N 10％,C220 5％，增塑剂17％；在80℃反应1.5小时，得到异氰酸根含量为10.6％的预聚物；
B组分(质量百分数)：反应型阻燃聚醚多元醇22％，扩链剂1,4-丁二醇9％，纤维状高导热碳粉18％，消泡剂聚醚S01X 9％,F3600 16％,C230 16％,C240A 9％，催化剂二月桂酸二丁基锡：0.2％，抗氧剂1135：0.8％。在105℃、-0.095MPa以下真空脱水至水分小于0.03％。
A组分和B组分按照质量配比在100：100，混合温度在40℃，混合后浇铸到温度为30℃的模具中反应，室温固化7天后得到聚氨酯弹性体制品备用测试。
实施例4
反应型阻燃聚醚多元醇制备：
将INOVOL C305 100g、双酚A聚醚S207H 140g、三溴苯酚33g、四溴双酚A 217.6g，双金属催化剂0.8g加入到耐压容器中，氮气置换3遍后升温至110℃脱水2h，升温至130℃滴加环氧丙烷39g引发，压力降至-0.07MPa后慢速进料环氧丙烷470g，控制反应过程中压力小于0.30MPa，内压反应2h，脱单体0.5h，放料。
测试聚醚羟值56.1mg KOH/g，粘度为1100mpa·s。
聚氨酯电子灌封胶制备：
A组分(质量百分数)：MDI-50 37％，异氰酸酯基聚倍半硅氧烷12％，PTMG2000 10％，C230 8％，F3600 10％，C240A 5％，偏苯三酸三辛酯18％；在80℃反应1.5小时，得到异氰酸根含量为11.2％的预聚物；
B组分(质量百分数)：低粘度反应型阻燃聚醚多元醇22％，扩链剂乙二醇9％，纤维状高导热碳粉18％，消泡剂聚醚S1200 9％，F3600 15％，C230 15％，C240A 11.5％，催化剂二月桂酸二丁基锡：0.2％，抗氧剂1135：0.3％。在105℃、-0.095MPa以下真空脱水至水分小于0.03％。
A组分和B组分按照质量配比在100：120，混合温度在40℃，混合后浇铸到温度为30℃的模具中反应，室温固化7天后得到聚氨酯弹性体制品备用测试。
实施例5
反应型阻燃聚醚多元醇制备：
将INOVOL C207 140g、双酚A聚醚S220H 200g，四溴双酚A 380.8g，双金属催化剂0.72g加入到耐压容器中，氮气置换3遍后升温至110℃脱水2h，升温至130℃滴加环氧丙烷39g引发，压力降至-0.07MPa后慢速进料环氧丙烷740.2g，控制反应过程中压力小于0.30MPa，内压反应2h，脱单体0.5h，放料。
测试聚醚羟值75.6mg KOH/g，粘度为4120mpa·s。
聚氨酯电子灌封胶制备：
A组分(质量百分数)：MDI-50 41％，异氰酸酯基聚倍半硅氧烷8％，PTMG2000 20％，C210 5％，F330N 5％，C220 6％，环氧大豆油15％；在80℃反应1.5小时，得到异氰酸根含量为10.6％的预聚物；
B组分(质量百分数)：低粘度反应型阻燃聚醚多元醇33％，扩链剂1,4-丁二醇9％，纤维状高导热碳粉20％，消泡剂聚醚S1200 5％，F330N 10％，C230 10％，C240A 12.2％，催化剂二月桂酸二丁基锡：0.5％，抗氧剂1135：0.3％。在105℃、-0.095MPa以下真空脱水至水 分小于0.03％。
A组分和B组分按照质量配比在100：100，混合温度在40℃，混合后浇铸到温度为30℃的模具中反应，室温固化7天后得到聚氨酯弹性体制品备用测试。
对比例1
将INOVOL C305 125g、双酚A聚醚S207H 175g加入到耐压容器中，氮气置换3遍后升温至110℃脱水2h，升温至135℃滴加环氧丙烷37g引发，压力降至-0.06MPa后慢速进料环氧丙烷300g，控制反应过程中压力小于0.30MPa，内压反应2h，脱单体0.5h，放料。
测试聚醚羟值111mg KOH/g，粘度为730mpa·s。
聚氨酯电子灌封胶制备：
A组分(质量百分数)：MDI 40％,异氰酸酯基笼型聚倍半硅氧烷10％,PTMG1000 10％，C210 10％,F330N 10％,C230 5％，邻苯二甲酸二辛酯15％，在80℃反应1小时，得到异氰酸根含量为11％的预聚物；
B组分(质量百分数)：反应型阻燃聚醚多元醇15％，扩链剂1,4-丁二醇10％，纤维状高导热碳粉20％，消泡剂聚醚S01X 10％,F3600 15％,C230 15％,C240A 14％，二月桂酸二丁基锡：0.2％，抗氧剂1076：0.8％，在100℃、-0.095MPa以下真空脱水至水分小于0.03％。
A组分和B组分按照质量配比在100：110，混合温度在40℃，混合后浇铸到温度为30℃的模具中反应，室温固化7天后得到聚氨酯弹性体制品备用测试。
对比例2
聚氨酯电子灌封胶制备：
A组分(质量百分数)：HDI 42％,PTMG1000 15％，C220 12％,F330N 11％,C23012％，增塑剂8％；在80℃反应1.5小时，得到异氰酸根含量为14.4％的预聚物；
B组分(质量百分数)：反应型阻燃聚醚多元醇20％(实施例2中合成的阻燃聚醚多元醇)，扩链剂1,4-丁二醇12％，纤维状高导热碳粉15％，消泡剂聚醚S02X 8％,F3600 13％,C230 13％,C240A 10％，C240A 8％，催化剂二月桂酸二丁基锡：0.3％，抗氧剂1010：0.7％，在100℃、-0.095MPa以下真空脱水至水分小于0.03％。
硬度按GB/T 531.1-2008标准测定；
粘度按照GB/T 12008.8-1992标准测定；
阻燃等级按照UL-94标准测定；
导热系数按照GB/T 3139-2005标准测定。
表1实施例和对比例产品测试结果
Figure PCTCN2022115840-appb-000004
以上所述的实施例对本发明的技术方案和有益效果进行了详细说明，应理解的是以上所述仅为本发明的具体实施例，并不用于限制本发明，凡在本发明的原则范围内所做的任何修改、补充和等同替换等，均应包含在本发明的保护范围之内。

Claims (16)

  1. 一种低粘度反应型阻燃聚醚多元醇的制备方法，其特征在于：
    以低分子量聚醚、双酚A聚醚和含卤素的芳香族醇/酚作为复合起始剂，在双金属催化剂的作用下，与环氧烷烃聚合反应，得到所述的低粘度反应型阻燃聚醚多元醇。
  2. 根据权利要求1所述的低粘度反应型阻燃聚醚多元醇的制备方法，其特征在于：复合起始剂组成，以重量份数计，1份低分子量聚醚、1-2份双酚A聚醚和1-3份含卤素的芳香族醇/酚。
  3. 根据权利要求1或2所述的低粘度反应型阻燃聚醚多元醇的制备方法，其特征在于：双金属催化剂的用量为30-1000ppm。
  4. 根据权利要求1所述的低粘度反应型阻燃聚醚多元醇的制备方法，其特征在于：聚合反应条件为：130-140℃下聚合3-6h。
  5. 根据权利要求1所述的低粘度反应型阻燃聚醚多元醇的制备方法，其特征在于：低分子量聚醚的官能度为2-3，500≤Mn≤1000。
  6. 根据权利要求1所述的低粘度反应型阻燃聚醚多元醇的制备方法，其特征在于：低分子量聚醚的官能度为2，Mn为400。
  7. 根据权利要求1所述的低粘度反应型阻燃聚醚多元醇的制备方法，其特征在于：含卤素的芳香族醇/酚为2,3-二溴-4,5-二羟基苄醇、2,4-二氯苄醇、5-氯-2-羟基苯甲醇、3-(3-溴苯基)-2-丙炔-1-醇、四溴双酚A、5-溴-2-羟基苄醇或三溴苯酚中的一种或多种。
  8. 一种低粘度反应型阻燃聚醚多元醇，其特征在于：采用权利要求1-7任一所述的制备方法制得。
  9. 一种利用权利要求8所述的低粘度反应型阻燃聚醚多元醇制备的反应型阻燃导热聚氨酯电子灌封胶，其特征在于：包括A组分和B组分，其中，
    A组分：包括二异氰酸酯、异氰酸酯基笼型聚倍半硅氧烷、聚氧化丙烯聚醚多元醇、聚四氢呋喃醚多元醇、增塑剂；
    B组分：包括扩链剂、低粘度反应型阻燃聚醚多元醇、消泡剂聚醚多元醇、导热填料、聚氧化丙烯聚醚多元醇、催化剂、抗氧剂；
    所述异氰酸酯基笼型聚倍半硅氧烷由二异氰酸酯和端羟基笼型倍半硅氧烷的四氢呋喃溶液反应制备，其中端羟基笼型倍半硅氧烷质量百分数为30-50％，反应温度为60-80℃；
    所述低粘度反应型阻燃聚醚多元醇官能度为2-3，羟值为56-165mg KOH/g，粘度为700-15500mpa·s。
  10. 根据权利要求9所述的反应型阻燃导热聚氨酯电子灌封胶，其特征在于：A组分包含以下质量百分含量的原料：
    Figure PCTCN2022115840-appb-100001
  11. 根据权利要求9所述的反应型阻燃导热聚氨酯电子灌封胶，其特征在于：二异氰酸酯为二苯基甲烷二异氰酸酯、HDI、IPDI或甲苯二异氰酸酯中的一种或多种；
    增塑剂为邻苯二甲酸二辛酯、癸二酸二辛酯、偏苯三酸三辛酯、环氧大豆油或邻苯二甲酸二丁酯中的一种或多种。
  12. 根据权利要求9所述的反应型阻燃导热聚氨酯电子灌封胶，其特征在于：聚氧化丙烯醚多元醇数均分子量为1000-6000，官能度为2或3。
  13. 根据权利要求9所述的反应型阻燃导热聚氨酯电子灌封胶，其特征在于：B组分包含以下质量百分含量的原料：
    Figure PCTCN2022115840-appb-100002
  14. 根据权利要求9所述的反应型阻燃导热聚氨酯电子灌封胶，其特征在于：扩链剂为乙二醇、1,4-丁二醇、一缩二乙二醇、1,3-丙二醇、一缩二丙二醇或1,6-己二醇中的一种或多种；
    导热填料为纤维状高导热碳粉、鳞片状高导热碳粉或α-氧化铝中的一种或多种；
    抗氧剂为1076、1010、1135、318或339中的一种或多种；
    催化剂为有机锡、有机锌或有机锆中的一种或多种。
  15. 一种权利要求9-14任一所述的反应型阻燃导热聚氨酯电子灌封胶的制备方法，其特征在于：包括以下步骤：
    (1)先将配方量的聚氧化丙烯醚多元醇、聚四氢呋喃醚多元醇、二异氰酸酯、异氰酸酯 基笼型聚倍半硅氧烷、增塑剂，在70-85℃反应1-3小时，得到异氰酸根含量为7.0-18.0wt％的预聚物，即得A组分；
    (2)将配方量的扩链剂、聚氧化丙烯醚多元醇、低粘度反应型阻燃聚醚多元醇、导热填料、消泡剂聚醚多元醇、催化剂、抗氧化剂，在100-110℃、-0.095MPa以下真空脱水至水分小于0.03％，即得B组分；
    (3)将A、B组分按重量比100：90-120称量，混合温度在30-40℃，浇铸到温度为30-35℃的模具中反应，室温固化后即得到所述的反应型阻燃导热聚氨酯电子灌封胶。
  16. 一种权利要求8所述的低粘度反应型阻燃聚醚多元醇的应用，其特征在于：用于聚氨酯阻燃硬泡组合料、聚氨酯阻燃发泡胶或聚氨酯阻燃弹性体的制备。
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