The raw materials for silicone rubber production are silicon powder, methanol and hydrochloric acid. Silicone rubber can be obtained through a series of complex chemical processes. Because of its low molecular weight, this kind of silicone rubber is liquid at room temperature, so it is also called "liquid silica gel". After mixing the crosslinking agent and platinum catalyst into the liquid silica gel, it is injected into the model. After a period of curing reaction, it can be cured (it can react at room temperature, so it is called room temperature vulcanized silicone rubber. It can also be slightly heated to improve the reaction speed). And form the final product. Adding different additives can make silica gel materials have different specific gravity, hardness, strength, color and texture.
Silicone rubber has better high and low temperature resistance than ordinary pure organic rubber. Traditional rubber will be frozen and brittle in the space that the sun can't shine on, and it will play a sealing role in the future. As a space material, silicone rubber is not afraid of high temperature and can resist cold. No matter in the extreme environment of 300 ° C or - 90 ° C, it can keep its chemical structure calm without losing its original flexibility.
Compared with natural rubber, there is no bacteria breeding. And its surface tension is very low, it is not easy to be soaked and deformed by sweat and rain, and it has strong waterproof and corrosion performance. Therefore, the mission life of silicone rubber products in the natural environment can reach decades.
Silicone rubber is not omnipotent, and its tear resistance is lower in rubber. Therefore, the connection part of the silicone watch strap and the metal clasp is easy to produce small cracks due to large external force. Therefore, when using the silicone watch strap, you need to pay attention to the connection part between the watch strap and the metal clasp, do not pull vigorously. In addition, soft cloth is often used to wipe and clean the silica gel watch strap to remove some hard dust particles, so as to prevent it from scratching the silica gel surface and producing small cracks, which can also effectively prolong the life of the watch strap.
