Two-component polyurethane foaming agent and preparation method thereof

A two-component polyurethane and polyurethane foaming agent technology, applied in the field of sealing materials, can solve the problems of high environmental dependence, slow curing reaction, and long curing time, and achieve fast curing speed, good elasticity and toughness, and high density. Effect

Inactive Publication Date: 2017-05-10
苏州健能新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the polyurethane foaming agent has been widely used, which has made the one-component foaming agent fully developed in technology, but because the curing of the one-component polyurethane foaming agent needs to absorb the water vapor in the air to react, the curing time is relatively long. Long, if the humidity in the air is low, the curing reaction will be slower and the dependence on the environment will be higher

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A two-component polyurethane foaming agent, the polyurethane foaming agent is composed of two components AB, and the A component is composed of the following raw materials in parts by weight: 50 parts of polyester polyol, 60 parts of polyether polyol , 20 parts of dimethyl ether, 2 parts of N, N-dimethylcyclohexylamine, 2 parts of polymethicone, propylene oxide, ethylene oxide polymer and 2 parts of ammonium polyphosphate;

[0026] The B component is composed of the following raw materials in parts by weight: 50 parts of toluene diisocyanate, 10 parts of propane butane, and 1 part of silicone foam stabilizer.

[0027] Through the mixing of the above-mentioned two groups of substances AB, the curing speed of the polyurethane foaming agent is fast, and its curing speed is increased by 30% compared with the curing speed of the prior art, and it is low in dependence on the environment. Can be cured, high density, good elasticity and toughness.

Embodiment 2

[0029] A two-component polyurethane foaming agent, the polyurethane foaming agent is composed of two components AB, and the A component is composed of the following raw materials in parts by weight: 80 parts of polyester polyol, 100 parts of polyether polyol , 60 parts of dimethyl ether, 6 parts of N, N-dimethylcyclohexylamine, 7 parts of polymethicone, propylene oxide, ethylene oxide polymer and 5 parts of ammonium polyphosphate;

[0030] The B component is composed of the following raw materials in parts by weight: 100 parts of toluene diisocyanate, 30 parts of propane butane, and 6 parts of silicone foam stabilizer.

[0031] Through the mixing of the above-mentioned two groups of materials AB, the curing speed of the polyurethane foaming agent is fast, and under the same conditions, its curing speed is 5% lower than that of Example 1.

Embodiment 3

[0033] A two-component polyurethane foaming agent, the polyurethane foaming agent is composed of two components AB, and the A component is composed of the following raw materials in parts by weight: 80 parts of polyester polyol, 85 parts of polyether polyol , 45 parts of trichlorotrifluoroethane, 4 parts of N, N, N', N'-tetramethylalkylene diamine, 4 parts of sulfonated sodium ricinoleate and 3 parts of dimethyl methyl phosphate;

[0034] The B component is composed of the following raw materials in parts by weight: 75 parts of diphenylmethane diisocyanate, 23 parts of dimethyl ether, and 4 parts of silicone foam stabilizer.

[0035] Through the mixing of the above-mentioned two groups of substances AB, the curing speed of the polyurethane foaming agent is fast, and under the same conditions, its curing speed is increased by 15% compared with that of Example 1.

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PUM

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Abstract

The invention relates to the technical field of sealing materials, in particular to a two-component polyurethane foaming agent and a preparation method thereof. Since curing of a one-component polyurethane foaming agent requires absorbing water vapor in air for reaction, and the curing time is longer, the curing reaction is slower if the humidity of the air is lower, and the dependency on the environment is higher. The two-component polyurethane foaming agent is prepared from two components of a component A and a component B, wherein the component A is prepared from polyol, a foaming agent, a catalyst, a surfactant and a flame retardant; the component B is prepared from isocyanate, the foaming agent and a foam stabilizer. The two-component polyurethane foaming agent provided by the invention is fast in curing speed, low in environment dependency, large in density and good in elasticity, and can meet the requirements of building industry. The invention also relates to the preparation method of the two-component polyurethane foaming agent.

Description

technical field [0001] The invention relates to the technical field of sealing materials, in particular to a two-component polyurethane foaming agent and a preparation method thereof. Background technique [0002] Polyurethane foaming agent is a high-performance foam material. Its thermal insulation performance is the best among various foam materials, and it has excellent material strength. best choice. With the emphasis on building energy conservation in my country, the amount of polyurethane foam insulation materials in my country's construction industry is expanding year by year. Polyurethane foaming agent, commonly known as foaming agent, styrofoam, and PU caulking agent, is the product of the cross combination of aerosol technology and polyurethane foam technology. When the material is sprayed from the aerosol can, the foamy polyurethane material will expand rapidly and react with the air or the moisture in the contacted substrate to form a foam. The cured polyureth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/48C08G18/42C08J9/14C08K3/32C08K5/521C08G101/00
CPCC08G18/7614C08G18/4018C08G18/42C08G18/7671C08G2101/00C08J9/141C08J9/142C08J9/146C08J9/147C08J9/149C08J2203/12C08J2203/14C08J2203/142C08J2203/144C08J2203/182C08J2375/06C08J2375/08C08K3/32C08K5/521C08K2003/323
Inventor 陈士强朱强
Owner 苏州健能新材料科技有限公司
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