Polyurethane hard plastic foam composition

A foaming composition and polyurethane technology, applied in the field of polyurethane rigid foam plastic foaming compositions, can solve problems such as poor mechanical properties, and achieve the effects of overcoming poor mechanical properties, good strength and toughness, and avoiding environmental hazards

Inactive Publication Date: 2014-04-23
广西弘耀祥科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the deficiencies of the prior art, the present invention aims to provide an improved polyurethane rigid plastic foaming composition, which can overcome the disadvantages of poor mechanical properties of existing polyurethane rigid foam plastics, and in addition to ensuring the original high temperature resistance, fire resistance and other properties, Also has good strength and toughness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Take by weight 5 parts of glycerol polyether resin, 5 parts of glycol ether resin, 0.2 part of foam stabilizer water-soluble silicone oil, 0.2 part of catalyst pentamethyldiethylene, 0.3 part of curing agent dibutyltin dilaurate, 2 parts Parts of water, mixed to form raw material combination polyether, then add 5 kg of dimethyl ether, 2 parts of glass fiber, 8 kg of mullite and 5 kg of silicon carbide fine powder according to 80 kg of combined polyether, and mix uniformly to form a polyether composition. Then mix it with isocyanate in a container at a mass ratio of 1:1.4 to obtain rigid polyurethane foam.

Embodiment 2

[0033] Weigh 6 parts of glycerol polyether resin, 4 parts of glycol ether resin, 0.3 part of foam stabilizer water-soluble silicone oil, 0.3 part of catalyst pentamethyldiethylene, 0.2 part of curing agent dibutyltin dilaurate, 3 parts by mass parts Parts of water, mixed to form raw material combination polyether, then add 3 kilograms of dimethyl ether, 2 parts of glass fiber, 6 kilograms of mullite and 4 kilograms of silicon carbide fine powder according to 85 kilograms of combined polyether, mix uniformly to form polyether composition, Then mix it with isocyanate in a container at a mass ratio of 1:1.3 to obtain rigid polyurethane foam.

Embodiment 3

[0035] Take by weight 7 parts of glycerol polyether resin, 3 parts of glycol ether resin, 0.2 part of foam stabilizer water-soluble silicone oil, 0.4 part of catalyst pentamethyldiethylene, 0.2 part of curing agent dibutyltin dilaurate, 3 parts Parts of water, mixed to form a raw material combination polyether, then add 2 kg of dimethyl ether, 2 parts of glass fiber, 4 kg of mullite and 2 kg of silicon carbide fine powder according to 90 kg of combined polyether, mix evenly to form a polyether composition, Then mix it with isocyanate in a container at a mass ratio of 1:0.9 to obtain rigid polyurethane foam.

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Abstract

The invention relates to the technical field of the polyurethane foam hard plastics, and more specifically relates to a polyurethane hard plastic foam composition. The polyurethane hard plastic foam composition provided by the invention is composed of the following main raw materials in parts by weight: 75-90 parts of combined polyether, 2-5 parts of dimethyl ether, 2-5 parts of glass fibers, 4-10 parts of mullite and 2-5 parts of silicon carbide fine powder. The polyurethane hard plastic foam composition is capable of overcoming the shortcoming of poor mechanical properties of the existing polyurethane hard foam plastic, and has excellent strength and tenacity in addition to the previous properties such as high temperature resistance and fire resistance.

Description

technical field [0001] The invention relates to the technical field of polyurethane foamed rigid plastics, in particular to a foaming composition of polyurethane rigid foamed plastics. Background technique [0002] Polyurethane rigid foam has excellent properties such as light weight, heat preservation, cold resistance and solvent resistance, sound absorption and shock resistance. Insulation materials are used in a small amount for non-insulation occasions, such as imitation wood, packaging materials, etc., but due to their poor mechanical properties, they cannot meet the requirements of structural materials. [0003] As a structural material, it requires certain strength, rigidity and toughness. In order to improve the mechanical properties of polyurethane rigid foam plastics, the commonly used methods are to increase the material density or add reinforcing agents, and the influence of reinforcing agents on the mechanical properties of polyurethane rigid foam plastics has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08K7/14C08K3/34C08J9/08C08G101/00
CPCC08G18/165C08G18/1808C08G18/242C08G18/4804C08K3/34C08K7/14C08K2201/014C08G2110/0025C08G2110/0083
Inventor 倪海明陈燕蓉林国友谢美萱柳春蓝雨陶靖
Owner 广西弘耀祥科技有限公司
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