In the field of silicone, the main ways of curing cross-linking of silicone rubber are peroxide cross-linking, UV curing, addition linking and condensation cross-linking. Among them, peroxide cross-linking is mainly suitable for high temperature rubber system; UV curing requires special equipment, curing faster, but the equipment is expensive and may have some negative effects on health; Condensation cross-linking will release small molecules during the curing process, and the full curing time is too long, which is not suitable for high-precision application scenarios: The addition method is widely used because there is no by-product generation, the curing requirement is low, and the curing cross-linking can be carried out at room temperature, but it has the problem that the curing process is difficult to control. In order to control the curing process, the traditional additive silicone rubber is usually separated from the cross-linking agent and the catalyst in the application, and then mixed together to cross-link when used, which is not only inconvenient to use, but also complicated to operate. The existing additive silicone rubber can control the curing process by adding one or more inhibitors on the basis of cross-linking agent and catalyst. Among them, inhibitors are non-metals and their compounds, unsaturated compounds and heavy metal ion compounds with unshared electron pairs. This kind of substance can significantly inhibit the activity of the platinum catalyst, and with the increase of the amount of inhibitors, this additive silicone rubber product can be stably stored for 6 to 7 months at an environment below 25 degree C, but its curing cross-linking generally requires heating to 60 to 200 degree C, and the heating time is 10 to 60 minutes. In addition, capsule platinum catalysts made of acrylic acid and polyperoxane have also been reported. For example, polyvinyl chloride is used as the wall material of the capsule, and a micro-capsule platinum catalyst is prepared by inter-coating the platinum catalyst. The advantage of this preparation method is that the intermediate platinum catalyst is not easy to ooze, and it is convenient for the processing of the product. However, the catalyst needs to be heated to more than 100 degree C to play a catalytic role. For another example, the direct use of polycaprolactone as the wall material of the capsule to prepare micro-encapsulation catalyst, although the curing temperature point is low, but due to the characteristics of polycaprolactone itself is easy to degrade under natural conditions, there is a risk of leakage during the storage process when it is used to prepare the additive silicone rubber. Therefore, how to provide a catalyst with stable properties and low softening point at room temperature to prepare an additive silicone rubber that is easy to store and transport and can be cured at low temperature has become an objective demand.

Such catalysts are homogeneous catalysts with high reactivity, but unstable during the reaction process, may generate metal platinum or form an amorphous body in the reaction medium, resulting in a shorter service life, in addition, by-products are produced in the hydrogenated silanization reaction, in addition to hydrogenated silanization products, but also the formation of alene double bond isomerization reaction products. In the case of heterogeneous platinum catalysts, inorganic support is often used to fix platinum to catalyze hydrogenated silanization reactions, for example, catalysts on the above-mentioned support are described in US2637738, DE 2815316. In Miao Qianjing, Fang Zhengping,Catal Commun,2003,4(12):63, it was described that a heterogeneous catalyst was prepared by using Karstedt catalyst supported by silica, with high regional selectivity. For some medium and high temperature curing additive silicone resin and silicone rubber products, due to the high viscosity of the product, it is often necessary to heat to a higher temperature to use, and the service life of the product is significantly shorter at a higher temperature for a long time. Silicone or silicone rubber products formulated with the above catalyst have a short service life and must be used within a short time, otherwise they will gelate and cannot be used, although the addition of platinum inhibitors (such as acetylicyclohexanol, 2-methyl-3-butylene-2 alcohol and 3, 5-dimethyl-1-hexyne-3-alcohol) can significantly extend the service life of the product. Because this compound is difficult to purify, resulting in its effect is not exact, and the platinum inhibitor and platinum complex is a dark compound, the addition of platinum inhibitor will significantly increase the color of the product.