Based on the characteristics of low viscosity, easy flow, and fast vulcanization speed before vulcanization of liquid silicone rubber, the application of injection molded liquid silicone rubber has been rapidly developed, and injection molding technology is receiving increasing attention. Through the research and application practice of injection molded silicone rubber, this article introduces the injection molding process of addition molded liquid silicone rubber, and briefly analyzes the influence of process parameters on products during the injection molding process of liquid silicone rubber.
Liquid silicone rubber is a non-toxic, heat-resistant, and highly resilient flexible thermosetting material. Its rheological behavior is mainly characterized by low viscosity, rapid curing, shear thinning, and high coefficient of thermal expansion.

LSR is a dual liquid rapid vulcanization material using platinum as a catalyst, which can be produced through injection molding, mass production, rapid vulcanization, and repetitive mechanical production. Its products exhibit good thermal stability, cold resistance, excellent electrical insulation performance, and will not produce toxic substances during combustion.

Therefore, it has become an irreplaceable material in the production and design of health products, cars, baby products, medical supplies, diving products, kitchen utensils, and seals.

Injection molded liquid silicone rubber (LSR) is a type of additive molded liquid silicone rubber. It utilizes its low viscosity (having certain fluidity and irregularity before vulcanization) and facilitates the use of metering and mixing equipment for feeding. Special injection molding equipment is used to accurately and automatically feed, mix, and mold the two components, and then quickly vulcanize to form products. The injection molding process has gradually replaced the traditional molding process and has many advantages: using liquid injection molding technology for vulcanization molding, accurate measurement, and less material waste; Low vulcanization temperature, short molding cycle, and reduced production costs; High product accuracy, capable of processing complex shaped products; The vulcanization process has no by-products and does not require secondary vulcanization; The product has excellent aging resistance, weather resistance, non-toxicity, high transparency, high mechanical strength, and good elasticity.

Therefore, liquid injection molded silicone rubber has become the preferred material in daily rubber products such as baby products, daily products, power insulation material processing, kitchen accessory manufacturing, and is one of the fastest developing products in silicone rubber.