Novel platinum vulcanizing agent and preparation technology thereof

Abstract

The invention relates to the technical fields of a vulcanizing agent and a preparation technology of the vulcanizing agent, particularly to a novel platinum vulcanizing agent and a preparation technology thereof. The novel platinum vulcanizing agent comprises a component A and a component B which are respectively added while in use, wherein the component A is the mixture of methyl vinylsiloxane rubber and a 1,3-divinyltetramethyldisiloxane platinum complex compound; the component B is the mixture of methyl hydrogen polysiloxane, gas phase silicon dioxide and an inhibitor. Compared with the prior art, the novel platinum vulcanizing agent disclosed by the invention uses the methyl vinylsiloxane rubber as a carrier, and under the existence of a platinum catalyst, vinyl double bonds and the methyl hydrogen polysiloxane are liable to generate a silicon hydrogen addition reaction, so that the purpose of cross-linking vulcanization is realized; the gas phase silicon dioxide is added for adjusting the hardness of vulcanization products, the vulcanization speed is high and is 1/3-1/2 higher than the vulcanization speed of the conventional platinum vulcanizing agent, and the production efficiency is improved; the vulcanization temperature is 10%-30% lower than that of the conventional platinum vulcanizing agent, and the purposes of energy conversation and environmental protection are achieved; the addition proportion is 30%-50% lower than that of the conventional platinum vulcanizing agent, and the production cost is reduced; the inhibitor is used, the storage time is greatly prolonged, and the storage time can reach 20-48h; in addition, the hygiene grade and the environmental protection grade are high, and the preparation technology is simple.

Description

technical field [0001] The invention relates to the technical field of vulcanizing agent and its preparation process, in particular to a novel platinum vulcanizing agent and its preparation process. Background technique [0002] Compared with the traditional peroxygen traffic curing system, platinum curing agent has the advantages of environmental protection, high efficiency and odorless. With the increasing emphasis on the requirements of various environmental protection and sanitation conditions in various countries, especially the gradual increase in the testing requirements for organic silicon products related to human food and medical treatment, such as water dispenser hoses and coffee machine hoses need to meet food-grade environmental protection testing standards , platinum vulcanizing agent will soon replace the traditional peroxide vulcanizing agent, such as double 25, double 24 and so on. [0003] With the continuous deepening of the research on platinum vulcanizi...

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Problems solved by technology

[0003] With the continuous deepening of the research on platinum vulcanizing agents, many kinds of platinum vulcanizing agents have appeared on the market. At present, the platinum vulcanizing agents on the market have the following problems. First, the storage time is short, usually less than 10 hours; second, the vulcanization speed slow; third, the addition ratio is high; fourth, the vulcanization temperature is high; fifth, the preparation process is complicated and the cost is high

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