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Low-density flame retardant polyurethane hard foam plastic and preparation method thereof

A rigid foam, low-density technology, applied in the field of low-density flame-retardant polyurethane rigid foam and its preparation, can only process dark-colored products; others such as graphite, red phosphorus, molybdenum disulfide, metal powder And industrial slag itself has problems such as color

Inactive Publication Date: 2018-04-03
合肥华福土工合成材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, carbon black is black and can only process dark-colored products; others such as graphite, red phosphorus, molybdenum disulfide, metal powder and industrial slag are all colored, and have certain limitations when used.

Method used

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  • Low-density flame retardant polyurethane hard foam plastic and preparation method thereof
  • Low-density flame retardant polyurethane hard foam plastic and preparation method thereof
  • Low-density flame retardant polyurethane hard foam plastic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Control the ambient temperature at 20-25°C, mix 100 parts by weight of polyether, 2.5 parts by weight of water, 1 part by weight of diethanolamine, 0.08 parts by weight of bis(2-dimethylaminoethyl) ether, 0.4 parts by weight of silicon foam stabilizer , 0.9 parts by weight of stannous octoate, 30 parts by weight of isocyanate, 20 parts by weight of dimethyl methyl phosphate, and 30 parts by weight of decabromodiphenyl ether are quickly poured into the barrel at a stirring speed of 2900r / min, and stirred for 9-10s to obtain Combined material, quickly pour the combined material into a mold heated to 40-45°C and cover the mold. Curing is carried out at 70-90°C. After aging, take out the plate and place it flat at 10-40°C for more than 12 hours.

Embodiment 2

[0021] Control the ambient temperature at 20-25°C, mix 100 parts by weight of polyether, 2.5 parts by weight of water, 1 part by weight of diethanolamine, 0.08 parts by weight of bis(2-dimethylaminoethyl) ether, 0.4 parts by weight of silicon foam stabilizer , 0.9 parts by weight of stannous octoate, 40 parts by weight of isocyanate, 30 parts by weight of dimethyl methyl phosphate, and 20 parts by weight of decabromodiphenyl ether are quickly poured into the barrel at a stirring speed of 2900r / min, and stirred for 9-10s to obtain Combined material, quickly pour the combined material into a mold heated to 40-45°C and cover the mold. Curing is carried out at 70-90°C. After aging, take out the plate and place it flat at 10-40°C for more than 12 hours.

Embodiment 3

[0023] Control the ambient temperature at 20-25°C, mix 100 parts by weight of polyether, 2.5 parts by weight of water, 1 part by weight of diethanolamine, 0.08 parts by weight of bis(2-dimethylaminoethyl) ether, 0.4 parts by weight of silicon foam stabilizer , 0.9 parts by weight of stannous octoate, 30 parts by weight of isocyanate, 15 parts by weight of dimethyl methyl phosphate, and 10 parts by weight of decabromodiphenyl ether are quickly poured into the barrel at a stirring speed of 2900r / min, and stirred for 9-10s to obtain Combined material, quickly pour the combined material into a mold heated to 40-45°C and cover the mold. Curing is carried out at 70-90°C. After aging, take out the plate and place it flat at 10-40°C for more than 12 hours.

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PUM

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Abstract

The invention relates to the technical field of polyurethane foam plastics, in particular to a low-density flame retardant polyurethane hard foam plastic and a preparation method thereof. According tothe preparation method, raw materials such as polyether, isocyanate, diethanolameine, catalysts, foam stabilizing agents, foaming agents, dimethyl methylphosphate and fire retardants are all mixed together through metering; high-speed stirring is performed; uniform mixing is performed to complete the foaming process; after the generation of chemical reaction, a certain step is performed; the low-density flame retardant polyurethane hard foam plastic is generated. The decabromodiphenyl ether is used as a fire retardant; meanwhile, the impact performance of inorganic filling materials and partial organic material formula is compensated. The low-density flame retardant polyurethane hard foam plastic and the preparation method have the main advantages that the flow process is simple; the equipment investment is low; the polyurethane hard foam plastic with low density, not dark color and certain flame retardant characteristics can be prepared.

Description

technical field [0001] The invention relates to the technical field of polyurethane foam preparation, in particular to a low-density flame-retardant polyurethane rigid foam and a preparation method thereof. Background technique [0002] The full name of polyurethane is polyurethane, which is a general term for macromolecular compounds containing repeated carbamate groups on the main chain. It is formed by addition polymerization of organic diisocyanate or polyisocyanate and dihydroxy or polyhydroxy compound. According to the different raw materials used, there are different types of products, generally polyester type and polyether type, and no by-products are formed. The mechanism of polyurethane two-component reaction molding process is as follows: [0003] -NCO+-OH→-NHCOO- gel reaction exothermic reaction [0004] -NCO+H2O→NH2+CO2 foaming reaction endothermic reaction [0005] The reaction mechanism involves a cross-linking reaction. The rate of gelation reaction and ...

Claims

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Application Information

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IPC IPC(8): C08G18/48C08G18/66C08K5/06C08K5/521C08L75/08C08J9/08C08G101/00
CPCC08G18/14C08G18/48C08G18/6688C08J9/08C08J2375/08C08K5/06C08K5/521C08L2201/02C08L2203/14C08G2110/0083C08L75/08
Inventor 武全福
Owner 合肥华福土工合成材料有限公司
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