High-temperature flame-retardant foaming agent and preparation method thereof

A foaming agent, high temperature technology, applied in the field of high temperature flame retardant foaming agent and its preparation, can solve the problems of the need to improve foam stability, poor compatibility between organic foaming agent and polymer substrate, etc.

Inactive Publication Date: 2021-11-19
嘉善县纤明新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention: the existing organic foaming agent has poor compatibility with the polymer base material, and its foam stability needs to be improved. In addition,

Method used

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  • High-temperature flame-retardant foaming agent and preparation method thereof
  • High-temperature flame-retardant foaming agent and preparation method thereof
  • High-temperature flame-retardant foaming agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A high-temperature flame-retardant foaming agent, comprising the following raw materials in parts by weight: 20 parts of azodicarbonamide, 10 parts of gelatin, 0.1 part of alkaline protease, 8 parts of flame-retardant mesoporous silica, and 15 parts of deionized water ;

[0037] The high temperature flame retardant foaming agent is made by the following steps:

[0038] Step A1, add gelatin and alkaline protease to distilled water, add sodium hydroxide solution, adjust the pH to 12, react in a constant temperature water bath environment at a temperature of 50°C for 1 hour, cool to room temperature, add hydrochloric acid solution for neutralization, and then filter , the filter cake was dried at 60°C to constant weight to obtain a protein foaming agent;

[0039] Step A2, add flame-retardant mesoporous silica to deionized water, add azodicarbonamide and ultrasonically disperse at a frequency of 40kHz for 30min, then add the protein-type foaming agent prepared in step A1, ...

Embodiment 2

[0058] A high-temperature flame-retardant foaming agent, comprising the following raw materials in parts by weight: 25 parts of azodicarbonamide, 12 parts of gelatin, 0.2 parts of alkaline protease, 9 parts of flame-retardant mesoporous silica, and 20 parts of deionized water ;

[0059] The high temperature flame retardant foaming agent is made by the following steps:

[0060] Step A1, add gelatin and alkaline protease to distilled water, add sodium hydroxide solution, adjust the pH to 12.5, react in a constant temperature water bath environment at a temperature of 52°C for 1.5 hours, cool to room temperature, add hydrochloric acid solution for neutralization, and then filter , the filter cake was dried at 63°C to constant weight to obtain a protein foaming agent;

[0061] Step A2, add flame-retardant mesoporous silica to deionized water, add azodicarbonamide and ultrasonically disperse at a frequency of 50kHz for 40min, then add the protein-type foaming agent prepared in ste...

Embodiment 3

[0080] A high-temperature flame-retardant foaming agent, comprising the following raw materials in parts by weight: 30 parts of azodicarbonamide, 15 parts of gelatin, 0.3 parts of alkaline protease, 10 parts of flame-retardant mesoporous silica, and 25 parts of deionized water ;

[0081] The high temperature flame retardant foaming agent is made by the following steps:

[0082] Step A1, add gelatin and alkaline protease to distilled water, add sodium hydroxide solution, adjust the pH to 13, react in a constant temperature water bath environment at a temperature of 55°C for 2 hours, cool to room temperature, add hydrochloric acid solution for neutralization, and then filter , the filter cake was dried at 65°C to constant weight to obtain a protein foaming agent;

[0083] Step A2, add flame-retardant mesoporous silica to deionized water, add azodicarbonamide and ultrasonically disperse at a frequency of 60kHz for 60min, then add the protein foaming agent prepared in step A1, at...

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PUM

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Abstract

The invention discloses a high-temperature flame-retardant foaming agent. The foaming agent is prepared from, by weight, 20 to 30 parts of azodicarbonamide, 10 to 15 parts of gelatin, 0.1 to 0.3 part of alkaline protease, 8 to 10 parts of flame-retardant mesoporous silicon dioxide and 15 to 25 parts of deionized water. The invention also discloses a preparation method of the high-temperature flame-retardant foaming agent. The azodicarbonamide and a protein type foaming agent are compounded according to a proper compatibility ratio, the defect that the foam stability of the azodicarbonamide is poor is effectively overcome, the composite organic foaming agent is loaded in the carrier mesoporous silica and can be uniformly dispersed in a polymer matrix, and the composite organic foaming agent is used as a bubble nucleation point to make particles of the foaming agent refined, so the problems that foam holes of a foam material prepared by the foaming agent are not uniform and the density of the foam holes is low are solved, and the foaming agent has flame retardance and high temperature resistance, so that the foaming agent has a certain application prospect and market value.

Description

technical field [0001] The invention belongs to the technical field of foaming agents, and relates to a high-temperature flame-retardant foaming agent and a preparation method thereof. Background technique [0002] During the processing of polymers such as plastics and rubber, the gas generated by the decomposition of the blowing agent makes the material form a porous structure, and can effectively improve the physical and mechanical properties of the material. There are many ways to classify blowing agents. According to the different boiling points of blowing agents, they can be divided into three categories: solid, liquid and gas. Solids include sodium bicarbonate, 4,4-oxobisbenzenesulfonyl hydrazide, etc., and liquids include Aliphatic hydrocarbons, halogenated hydrocarbons, etc., gases including carbon dioxide, nitrogen, air, etc., can be divided into physical or chemical blowing agents according to the way the blowing agent decomposes to generate gas, and chemical blowi...

Claims

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Application Information

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IPC IPC(8): C08J9/10C08J9/00C08L89/00C08K9/04C08K9/06C08K7/26
Inventor 不公告发明人
Owner 嘉善县纤明新材料有限公司
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