Methyl vinyl silicone rubber (VMQ) is the most commonly used silicone rubber, occupying a dominant position in domestic and international silicone rubber production due to its excellent processing and physical-mechanical properties.
VMQ's vulcanization processing performance is superior to dimethyl silicone rubber. The introduction of partially unsaturated vinyl groups on its side chains makes VMQ easier to vulcanize, with fewer bubbles produced during the vulcanization process and better rubber stability. Furthermore, VMQ has less permanent compression deformation, better solvent resistance, high-pressure steam stability, and excellent cold resistance.
The vulcanizing agent for VMQ typically uses less reactive peroxides, such as dibenzoyl peroxide. This vulcanization method reduces bubbles during vulcanization and poor rubber stability, allowing VMQ to produce thicker products.
In addition to being a general-purpose silicone rubber, VMQ can also serve as a base rubber for various high-performance and special-purpose silicone rubbers. For example, high-strength silicone rubber, low-compression set silicone rubber, non-post-vulcanization silicone rubber, heat-resistant conductive silicone rubber, and medical silicone rubber.
Moreover, VMQ has important applications in the aerospace industry, cutting-edge technologies, and other sectors of the national economy. It can be used to produce various molded and extruded products, such as cold-resistant rubber, seals, gaskets, tubing, and rods for aerospace applications and parts resistant to ablation, heat aging, or radiation.
Methyl silicone Gum IOTA 101
