The physical reaction of woven silicone tubing can be roughly distinguished by the naked eye, but the chemical mechanism cannot be observed. But the final product direction of silicone tubing is mainly divided into three sulfurization chemical mechanisms: organic peroxide initiation mechanism, condensation reaction mechanism, and addition reaction mechanism. At present, they are the main vulcanization mechanism in the extrusion market, and the former mainly has some obvious defects in the molding and rolling processes. The core of silicone vulcanization mechanism is determined by crosslinking points, so silicone tubes are not as simple as we imagine before molding, and are more complex in terms of chemical and physical reaction mechanisms.

1. The chemical reaction mechanism of bis (disulfide) silicone rubber tube is initiated by organic peroxides and guided by third-party intervention, which is an early research on the vulcanization mechanism of silicone rubber. The silicone tubing and other products produced by this vulcanization mechanism will have a slight odor, and the combustion products will be "black" and "brittle". The chemical principle is that the third-party intervention factor in peroxide vulcanization will guide the crosslinking factor of silicone rubber to follow the free radical reaction mechanism. Free radicals are a type of high molecular weight organic compound produced by the decomposition of organic peroxides during the heating and rolling process. The crosslinking factor undergoes fission during the guiding process, and then polymerizes again, or is understood as phagocytosis, until the crosslinking point becomes larger. Therefore, the physical reaction at this time should be that the silicone tube has elasticity and is not easy to tear, because the chemical reaction mechanism inside the silicone tube has already formed, and the crosslinking factor is tightly discharged and interrelated. Therefore, the silicone tube is generally unable to be torn apart by brute force, and the entire body is undoubtedly pulled by thousands of crosslinking factors at the same time.

2. The addition reaction sulfurization mechanism is currently widely used, mainly involving the addition of platinum based sulfurizing agents and other catalysts. Representative products include platinum sulfurized braided silicone tubes. Products using the addition reaction vulcanization mechanism have the characteristics of non toxicity, odorlessness, low scrap rate, and convenient control of crosslinking density, while some fields have higher costs for adding intervention materials. The main reason is that the siloxane and Si-H bonds in silicone undergo addition reactions under the influence of third-party intervention materials (platinum vulcanizing agents), thereby forming more complete Si-H bonds during the process of mutual breakage and recombination of siloxane and Si-H bonds in the original silicone and platinum vulcanizing agents. However, during the catalytic process, some siloxanes will undergo cleavage under the influence of crosslinking factors, forming a mesh structure with other siloxanes. This is also the reason why addition reaction type mesh structure factors are not as dense as organic peroxides, but have the same performance when converted into products. One is a deep suboptimal grid structure, and the other is a high-density grid structure.

3. The curing mechanism of condensation reaction type may be relatively unknown, similar to that of addition reaction type. Platinum curing agents can also be used for catalysis, but the requirements are more stringent, involving environment, temperature, humidity, curing system, product use, product structure, etc. The types of condensation reactions are relatively complex, mainly involving cracking with various factors during the curing agent and mixing process. Siloxanes, as crosslinking agents, form crosslinking reactions with factors that cause cracking in the curing agent under constant temperature conditions. The main products are special silicone hoses or braided silicone hoses, which can also be used for ordinary silicone hoses.