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Heat-conducting polyurethane with insulating and flame-retardant properties

A flame retardant, polyurethane technology, applied in the field of polyurethane, can solve the problems of poor processing performance and mechanical properties of polyurethane, and achieve the effects of low hardness, improved hardness and thermal conductivity, and excellent insulation performance.

Inactive Publication Date: 2020-08-25
东莞市英捷工程塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it will often cause the processing performance and mechanical properties of polyurethane to deteriorate. Therefore, the preparation of polyurethane with good mechanical properties, flame retardancy and good thermal conductivity is of great significance.

Method used

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  • Heat-conducting polyurethane with insulating and flame-retardant properties
  • Heat-conducting polyurethane with insulating and flame-retardant properties

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]A thermally conductive polyurethane with excellent insulating and flame-retardant properties, comprising 20 parts of diphenylmethane diisocyanate, 38 parts of PBA1000, 5 parts of 1,4-butanediol, 0.2 parts of antioxidant 1010, and 8 parts by weight in parts by weight parts, 16 parts of flame retardants, 0.2 parts of additives.

[0034] The filler is aluminum nitride and silicon nitride; the weight ratio of aluminum nitride and silicon nitride is 2:1. Described flame retardant comprises decabromodiphenylethane, two (hexachlorocyclopentadiene) cyclooctane, Sb 2 o 3 , zinc borate, the decabromodiphenylethane, two (hexachlorocyclopentadiene) cyclooctane, Sb 2 o 3 , The weight ratio of zinc borate is 1:7:1.2:2. The auxiliary agent includes wax of model BYK-CERAFLOUR-996 and coupling agent of model KBE-903, and the weight ratio of the wax and coupling agent is 3:1.

[0035] The preparation method of the heat-conducting polyurethane comprises the following steps: (1) first ...

Embodiment 2

[0037] A thermally conductive polyurethane with excellent insulating and flame-retardant performance, comprising 23 parts of polyisocyanate, 40 parts of polyol, 6.5 parts of chain extender, 0.5 part of antioxidant, 9.9 parts of filler, 19.7 parts of flame retardant, in parts by weight, 0.4 part of auxiliary agent.

[0038] The filler is aluminum nitride and silicon nitride; the weight ratio of aluminum nitride and silicon nitride is 1.5:1. Described flame retardant comprises decabromodiphenylethane, two (hexachlorocyclopentadiene) cyclooctane, Sb 2 o 3 , zinc borate, the decabromodiphenylethane, two (hexachlorocyclopentadiene) cyclooctane, Sb 2 o 3 , The weight ratio of zinc borate is 1:6:0.9:1.8. The auxiliary agent includes wax of model BYK-CERAFLOUR-996 and coupling agent of model KBE-903, and the weight ratio of the wax and coupling agent is 3:1.

[0039] The specific steps of the preparation method of the heat-conducting polyurethane are the same as in Example 1.

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Abstract

The invention belongs to the technical field of polyurethane, and particularly relates to heat-conducting polyurethane with excellent insulating and flame-retardant properties. The invention providesheat-conducting polyurethane with insulating and flame-retardant properties, which comprises the following components in parts by weight: 20-25 parts of polyisocyanate, 38-42 parts of polyol, 5-7 parts of a chain extender, 0.2-1 part of an antioxidant, 8-12 parts of a filler, 16-22 parts of a flame retardant and 0.2-0.6 parts of an auxiliary agent. The polyurethane disclosed by the invention has excellent insulating property (the insulating resistance is greater than 10<12> ohm cm), flame retardant property and heat-conducting property, and is low in hardness. The isocyanate, the polyhydric alcohol and the chain extender generate a polyurethane material, the flame-retardant effect of the polyurethane obtained through mutual cooperation of decabromodiphenyl ethane, bis (hexachlorocyclopentadiene) cyclooctane, Sb2O3 and zinc borate reaches UL94-V0, and aluminum oxide and silicon nitride are uniformly dispersed in the polyurethane, so that the hardness and the heat-conducting property ofthe polyurethane are improved.

Description

technical field [0001] The application belongs to the technical field of polyurethane, and more specifically, the invention relates to a thermally conductive polyurethane with excellent insulating and flame-retardant properties. Background technique [0002] The full name of polyurethane is polyurethane, which is a kind of polymer compound. Due to its excellent mechanical properties and good chemical resistance, acid and alkali resistance, weather resistance, water resistance, high adhesion and other properties, polyurethane has been widely used, such as cables, film sheets, conveyor belts, injection molding products, etc. . [0003] CN102585479A uses melamine cyanurate and organic phosphinate as flame retardants to prepare halogen-free flame-retardant polyurethane elastomers. When the amount of the two is 12% (mass percentage, the same below) and 8% respectively, the composite material can Passed UL-94V-0 level. CN102295835A uses magnesium hydroxide and phosphoric acid e...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/42C08G18/32C08K5/03C08K5/02C08K3/22C08K3/38C08K3/34
CPCC08G18/3206C08G18/4238C08G18/664C08K3/22C08K3/2279C08K3/34C08K3/38C08K5/02C08K5/03C08K2003/2227C08K2003/387
Inventor 郑华荻王小冬伍开标郑中元
Owner 东莞市英捷工程塑料有限公司
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