High heat-resistant porous organic silicon alloy elastomer material and method for preparing same

Abstract

The invention discloses a high heat-resistant porous organic silicon alloy elastomer material and a method for preparing the same. The method comprises master batch preparing: weighing 40% to 50% of alloy component one, 20% to 30% of alloy component two, 0.5% to 1.5% of cross-linking agents, 0.5% to 1.5% of constitution control agents, 15% to 25% of reinforcing agents and 0.05% to 0.15% of catalysts to be fully mixed, and allowing the mixture to stand for 2 to 4 hours; mixing: adding, by weight, 2% to 6 % of foaming agents, 1% to 3% of foaming assistants and 1% to 4% of vulcanizer into the master batch to be mixed for 10 to 30 minutes; vulcanization and foaming: vulcanizing and foaming rubber compound, and cooling and domolding after two phases of reaction; and post-processing: obtaining the high heat-resistant porous organic silicon alloy elastomer material after three phases of stoving. The high heat-resistant porous organic silicon alloy elastomer material has the advantages of low density, high softness, ductility, elasticity and porosity, and good physical properties of mechanical shock or impact absorption and high frequency damping. The material can be used continuously for a long time at a high temperature, is inflaming retardant, and can be widely applied in the fields of industry, agriculture, communication, military, construction, daily articles and the like.

Description

technical field [0001] The invention relates to a porous organosilicon solid material, in particular to a porous organosilicon solid material with excellent heat resistance and mechanical properties and a preparation method thereof. Background technique [0002] At present, the demand for porous silicone solid materials with high heat-resistant temperature (T≥280°C) is increasing day by day, but there is no corresponding product corresponding to it, so the research and development of such products is imminent. High heat-resistant porous silicone solid materials are rarely seen in the domestic market, and those sold in a small amount and with good reputation are basically imported products, and the market share of domestic products is even smaller. [0003] In order to improve the heat-resistant temperature of porous organic silicon solid materials, some researchers proposed to increase the degree of vulcanization of the material by adding auxiliary crosslinking agents and ad...

AI Technical Summary

Problems solved by technology

First of all, this method only improves the expansion ratio of the material through the second foaming process, but does not add any additives that can increase the vulcanization degree in the second foaming process, so the vulcanization process of the material is difficult to fully carry out. At high temperature, the material is easily degraded due to incomplete vulcanization, resulting in rapid degradation of performance, so the heat resistance of the material is low

Secondly, this method aims to introduce an open-cell silicone rubber foam material. The water resistance of open-cell materials is poor, so the material properties will decline rapidly in the presence of aqueous media, which is not conducive to the realization of high temperature resistance.

[0005] Therefore, a high heat-resistant porous organosilicon alloy elastomer material and its preparation method are proposed. This method solves the problems of poor high temperature resistance, low mechanical properties, low expansion ratio, single density, and poor medium resistance of open-pore materials. question

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