High-temperature resistant toxicity-reducing release agent and its preparation method

Abstract

A high-temperature resistant toxicity-reducing release agent and its preparation method relate to a release agent and its preparation method. According to the invention, the problem that preparation and application processes of a present release agent pollute the environment, are harmful to the health and require high preparation cost and complex preparation method and a present release agent has poor demoulding effects is solved. The high-temperature resistant toxicity-reducing release agent is prepared from A, B, C and D, wherein A is silicone rubber; B is tetraethyl orthosilicate; C is any one of dibutyltindilaurate and dibutyltin dilaurate or a mixture of the above two compounds according to any ratio; D is ethyl acetate; and the mass ratio of A to B to C to D is 100:1-50:1-50:1-50. The method comprises the following steps: 1, mixing A, B, C and D; and 2, preparing the high-temperature resistant toxicity-reducing release agent. The method is benefit for environmental protection, minimizes harm to human body, and requires low cost and simple technology. The prepared release agent has high temperature resistance and good demoulding effect. The release agent provided by the invention can be used in the fields of national defense, aerospace, chemical industry and civilian use.

Description

technical field [0001] The invention relates to a release agent and a preparation method thereof. Background technique [0002] The mold release agent is an important component in the molding process of composite materials. It not only affects the surface properties of composite materials, but also affects whether the product can be released from the mold. No matter how important the product and mold are, if the product sticks to the mold, If it cannot be released from the mold, the product and the mold can only be scrapped, so the role of the release agent is extremely important. [0003] The release agents in the molding process of composite materials are mainly divided into oil waxes, polyvinyl alcohols, silicon esters, etc., but they are used on plaster molds or sand molds. When making composite materials, after the product is demoulded, the plaster mold Or the blocky gypsum or blocky gravel in the sand mold is easy to stick or remain on the composite product, which not...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems that the preparation and application process of the existing release agent pollutes the environment, endangers human health, high preparation cost, complicated preparation method and poor release effect of the existing release agent, and provides a high-temperature-resistant and toxicity-reducing Release agent and preparation method thereof