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Composite foaming agent for foaming rubber and plastic products

A technology for composite foaming agent and rubber and plastic products, applied in the field of composite foaming agent for foaming rubber and plastic products, can solve the problem that the components cannot produce synergy, the foaming effect of the foaming agent is not obvious, and it cannot be used at high temperature, etc. question

Inactive Publication Date: 2021-10-22
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

[0004] Chinese invention patent CN102471514B A method of manufacturing foamed plastic parts, wherein a blowing agent composition is introduced into the plastic matrix and pores are formed in the plastic matrix by releasing at least carbon dioxide gas from the blowing agent composition, the blowing agent composition comprising at least one carbon dioxide carrier selected from carbonates, bicarbonates and carbamates of alkali metals, alkaline earth metals, aluminum, transition metals and / or ammonium, and at least one acid carrier, but the invention produces The foaming effect of the foaming agent is not obvious, and the components are single, the synergy between the components cannot be produced, and it cannot be used at high temperatures

Method used

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  • Composite foaming agent for foaming rubber and plastic products
  • Composite foaming agent for foaming rubber and plastic products
  • Composite foaming agent for foaming rubber and plastic products

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A composite foaming agent for foaming rubber and plastic products, including an auxiliary agent and a main agent. The auxiliary agent includes the following raw materials in parts by weight: 15 parts of silicon dioxide, 50 parts of absolute ethanol, 15 parts of deionized water, 5 parts of Vinyltrimethoxysilane, 20 parts of Span 80, 3 parts of liquid paraffin, 10 parts of 2-acrylamide-2-methylpropanesulfonic acid, 2 parts of acrylamide, 1 part of N,N-methylenebisacrylamide ;

[0032] This auxiliary agent comprises the following steps to make:

[0033] Step S1. Add absolute ethanol and deionized water into the beaker, add 10% dilute hydrochloric acid dropwise to adjust the pH until pH = 4, add nano silicon dioxide, stir at a constant speed and ultrasonically for 20 minutes, then add vinyltrimethoxy Silane, continue to stir for 30 minutes, then transfer to a three-necked flask, heat up to 60°C, stir at a constant speed and react for 4 hours, take it out after the reaction...

Embodiment 2

[0041] A composite foaming agent for foaming rubber and plastic products, including an auxiliary agent and a main agent. The auxiliary agent includes the following raw materials in parts by weight: 20 parts of silicon dioxide, 55 parts of absolute ethanol, 18 parts of deionized water, 6 parts of Vinyltrimethoxysilane, 25 parts of Span 80, 5 parts of liquid paraffin, 12 parts of 2-acrylamide-2-methylpropanesulfonic acid, 3 parts of acrylamide, 2 parts of N,N-methylenebisacrylamide ;

[0042] This auxiliary agent comprises the following steps to make:

[0043] Step S1. Add absolute ethanol and deionized water into the beaker, add 10% dilute hydrochloric acid dropwise to adjust the pH until pH = 4, add nano silicon dioxide, stir at a constant speed and ultrasonically for 20 minutes, then add vinyltrimethoxy Silane, continue to stir for 30 minutes, then transfer to a three-necked flask, heat up to 60°C, stir at a constant speed and react for 4 hours, take it out after the reactio...

Embodiment 3

[0051] A composite foaming agent for foaming rubber and plastic products, including an auxiliary agent and a main agent. The auxiliary agent includes the following raw materials in parts by weight: 25 parts of silicon dioxide, 60 parts of absolute ethanol, 20 parts of deionized water, 8 parts of Vinyltrimethoxysilane, 28 parts of Span 80, 6 parts of liquid paraffin, 14 parts of 2-acrylamide-2-methylpropanesulfonic acid, 4 parts of acrylamide, 2 parts of N,N-methylenebisacrylamide ;

[0052] This auxiliary agent comprises the following steps to make:

[0053] Step S1. Add absolute ethanol and deionized water into the beaker, add 10% dilute hydrochloric acid dropwise to adjust the pH until pH = 4, add nano silicon dioxide, stir at a constant speed and ultrasonically for 20 minutes, then add vinyltrimethoxy Silane, continue to stir for 30 minutes, then transfer to a three-necked flask, heat up to 60°C, stir at a constant speed and react for 4 hours, take it out after the reactio...

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Abstract

The invention discloses a composite foaming agent for foaming rubber and plastic products, the composite foaming agent comprises an auxiliary agent and a main agent, the auxiliary agent comprises the following raw materials in parts by weight: 15-30 parts of silicon dioxide, 50-70 parts of absolute ethyl alcohol, 15-25 parts of deionized water, 5-10 parts of vinyltrimethoxysilane, 20-30 parts of span 80, 3-8 parts of liquid paraffin, 10-15 parts of 2-acrylamide-2-methylpropanesulfonic acid, 2-5 parts of acrylamide, 1 to 3 parts of N, N-methylene bisacrylamide; the main agent can endow the foaming agent with excellent heat resistance, endows the prepared foaming agent with use performance at high temperature, can generate nitrogen, water, disulfide and other substances when the main agent is heated and decomposed, generates foaming performance, and can further promote foaming of rubber and plastic products through the synergistic interaction with the auxiliary agent.

Description

technical field [0001] The invention relates to a foaming agent, in particular to a composite foaming agent for foaming rubber and plastic products. Background technique [0002] Foamed plastic parts are manufactured using blowing agents that are mixed into or dissolved in the plastic and generate or release gases in the plastic. In this case, gas may be generated by decomposition or reaction of the blowing agent or components within the blowing agent. The outgassing is typically initiated and / or caused by heat and / or chemical reactions. [0003] During foaming, plastic parts experience a reduction in weight per unit volume, that is to say a reduction in density. The reduction in weight corresponds to the percentage of gas-containing rather than plastic material in the foamed plastic part, essentially the ratio of the pore volume to the total volume of the plastic part. [0004] Chinese invention patent CN102471514B A method of manufacturing foamed plastic parts, wherein ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/10C08J9/32C08L25/06
CPCC08J9/105C08J9/32C08J2325/06C08J2203/04C08J2203/22
Inventor 不公告发明人
Owner 嘉善县纤明新材料有限公司