Expandable microsphere foaming agent, preparation method thereof and foaming material

Abstract

The invention provides an expandable microsphere foaming agent. The expandable microsphere foaming agent consists of sodium carbonate and silicon dioxide coated on the surface of the sodium carbonate.A preparation method of the expandable microsphere foaming agent is further provided. Covering by the inorganic component silicon dioxide of the expandable microsphere foaming agent facilitates uniform dispersion of the foaming component sodium carbonate in a matrix, and the inorganic expandable microsphere foaming agent expands and performs closed-cell foaming at high temperature, so that the expandable microsphere foaming agent has the advantages of good foaming controllability, relatively stable cells and the like.

Description

technical field

[0001] The invention relates to the technical field of foaming materials, in particular to an expandable microsphere foaming agent, a preparation method thereof and a foaming material. Background technique

[0002] Foaming agent is a material that makes the target substance form holes, and it is widely used in the fields of rubber foam, plastic lightweight, silicate foam and metal foam. Foaming agents can be divided into chemical foaming agents and physical foaming agents. Among them, physical foaming agents are generally low-boiling liquids that vaporize and expand after heating to achieve foaming effects; chemical foaming agents can be divided into inorganic foaming agents. There are two types of foaming agents and organic foaming agents: inorganic foaming agents are generally endothermic, such as carbonates, nitrates and hydrides, etc., and decompose slowly; organic foaming agents are generally exothermic, such as azo It is a foaming agent and a sulfonyl ...

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