Vinyl silicone rubber (VMQ or PVMQ) is a coating-type rubber based on silalkyl methyl vinyl siloxane as the main chain, combined with low-molecular-weight divinyldimethyl siloxane as a crosslinking agent. This rubber not only exhibits excellent heat resistance, maintaining stable physical properties at high temperatures, but also possesses outstanding cold resistance, allowing long-term use in low-temperature environments.

The main components of vinyl silicone rubber include silicone rubber base polymers, vinyl silicone oils, catalysts, and fillers. The content of vinyl silicone oil significantly impacts heat resistance, cold resistance, and oxidation resistance. As the content of vinyl silicone oil increases, heat and cold resistance improve, but oxidation resistance decreases. The type and content of catalysts affect the crosslinking density and structure, thereby influencing overall performance.

Vinyl silicone rubber has a wide range of applications, including electronics, automobiles, and aviation. In the electronics industry, it is commonly used in the production of wires and cables, semiconductor devices, and optical communication equipment components. In the automotive industry, it is widely applied in engines, transmissions, and braking systems. In aviation, vinyl silicone rubber is the preferred material for aircraft seals, braking systems, and engine compartments due to its high temperature, cold resistance, and radiation protection properties.

Ethyl Silicone Rubber IOTA 2056 HTV