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Foaming agent capable of improving toughness of polyurethane

A foaming agent, polyurethane technology, applied in the field of foaming agent processing, can solve problems such as lack of toughness, and achieve the effects of improving pore size, enhancing toughness, and enhancing porosity

Inactive Publication Date: 2018-12-11
芜湖市新京桥包装科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The characteristic of polyurethane foam is that it has a variable polymer structure, which can meet the needs of a wide range of applications. However, due to the limitations of traditional foaming materials and processes, polyester amine foams, especially hard foams, have limited toughness due to their closed-cell structure. However, this type of foam is mostly used in building materials, and the level of toughness also affects its service life and performance, so improving the toughness of this type of foam is a hot spot at this stage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A foaming agent for improving the toughness of polyurethane, the foaming agent is made of the following raw materials in parts by weight: 12 parts of trichlorofluoromethane, 10 parts of n-pentane, 6 parts of butadiene rubber, 4 parts of calcium carbonate, nanometer two 2 parts of silicon oxide, 1 part of fatty alcohol polyoxyethylene ether sodium sulfate, 2 parts of dispersant, 1 part of fluorine-containing diphenyl ether diamine.

[0025] The dispersant is a mixture of vinyl bisstearamide and stearic acid monoglyceride in a mass ratio of 2:1; the particle size of the nano silicon dioxide is 60-90nm.

[0026] The preparation method of described whipping agent comprises the following steps:

[0027] (1) Heat butadiene rubber in a reaction kettle to 70-80°C, then add nano silicon dioxide and fatty alcohol polyoxyethylene ether sodium sulfate and stir evenly to obtain a mixed material for later use;

[0028] (2) Mix and stir trichlorofluoromethane, n-pentane and calcium c...

Embodiment 2

[0032] A foaming agent for improving the toughness of polyurethane, the foaming agent is made of the following raw materials in parts by weight: 18 parts of trichlorofluoromethane, 12 parts of n-pentane, 8 parts of butadiene rubber, 8 parts of calcium carbonate, nanometer two 3 parts of silicon oxide, 3 parts of fatty alcohol polyoxyethylene ether sodium sulfate, 3 parts of dispersant, 2 parts of fluorine-containing diphenyl ether diamine.

[0033] The dispersant is a mixture of vinyl bisstearamide and stearic acid monoglyceride in a mass ratio of 2:1; the particle size of the nano silicon dioxide is 60-90nm.

[0034] The preparation method of described whipping agent comprises the following steps:

[0035] (1) Heat butadiene rubber in a reaction kettle to 70-80°C, then add nano silicon dioxide and fatty alcohol polyoxyethylene ether sodium sulfate and stir evenly to obtain a mixed material for later use;

[0036] (2) Mix and stir trichlorofluoromethane, n-pentane and calcium...

Embodiment 3

[0040] A foaming agent for improving the toughness of polyurethane, the foaming agent is made of the following raw materials in parts by weight: 14 parts of trichlorofluoromethane, 11 parts of n-pentane, 7 parts of butadiene rubber, 6 parts of calcium carbonate, nanometer two 2.5 parts of silicon oxide, 2 parts of fatty alcohol polyoxyethylene ether sodium sulfate, 2.5 parts of dispersant, 1.5 parts of fluorine-containing diphenyl ether diamine.

[0041] The dispersant is a mixture of vinyl bisstearamide and stearic acid monoglyceride in a mass ratio of 2:1; the particle size of the nano silicon dioxide is 60-90nm.

[0042] The preparation method of described whipping agent comprises the following steps:

[0043] (1) Heat butadiene rubber in a reaction kettle to 70-80°C, then add nano silicon dioxide and fatty alcohol polyoxyethylene ether sodium sulfate and stir evenly to obtain a mixed material for later use;

[0044] (2) Mix and stir trichlorofluoromethane, n-pentane and c...

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Abstract

The invention provides a foaming agent capable of improving the toughness of polyurethane and relates to the technical field of processing of foaming agents. The foaming agent is prepared from the following raw materials in parts by weight: 12-18 parts of trichlorofluoromethane, 10-12 parts of pentane, 6-8 parts of butadiene rubber, 4-8 parts of calcium carbonate, 2-3 parts of nano silicon dioxide, 1-3 parts of fatty alcohol polyethenoxy ether sodium sulfate, 2-3 parts of a dispersant and 1-2 parts of fluorine-containing bisphenoxyphenyldiamine. The foaming agent is capable of overcoming the defects in the prior art, and can be used for improving the toughness of traditional rigid polyurethane foam, increasing the service life and use property of the polyurethane material and meanwhile reducing the foaming time of the polyurethane material, and the foaming material has the advantages of high strength, high resistance to pressure and high abrasion resistance.

Description

technical field [0001] The invention relates to the technical field of foaming agent processing, in particular to a foaming agent for improving the toughness of polyurethane. Background technique [0002] Polyurethane foam is a high molecular polymer made of isocyanate and polyether as the main raw materials, mixed by special equipment under the action of various additives such as foaming agent, catalyst, and flame retardant, and foamed on-site by high-pressure spraying. There are two types of polyurethane foam, soft foam and hard foam. Soft foam has an open-cell structure, and hard foam has a closed-cell structure. Soft foam is divided into two types: crusted and non-skinned. Clothing and sound insulation lining; rigid foam is a new type of synthetic material with thermal insulation and waterproof functions, mainly used in building exterior wall insulation, roof waterproof insulation integration, cold storage insulation, pipeline insulation materials, building panels, refri...

Claims

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Application Information

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IPC IPC(8): C08J9/14C08J9/08C08L75/04
CPCC08J9/0061C08J9/0066C08J9/08C08J9/141C08J9/147C08J2203/02C08J2203/204C08J2375/04
Inventor 彭其周
Owner 芜湖市新京桥包装科技有限公司
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