The main chain of polydimethylsiloxane has a helical structure, and the methyl on it is distributed outward, which prevents further aggregation of molecules, making Intermolecular force weak and the molecular chain flexible. In addition, the main chain of siloxanes is mainly linear with fewer branching points. Therefore, silicone rubber has the characteristic of being softer than traditional rubber, coupled with its excellent physiological inertness, making it widely used in fields such as adult products, doll toys, and food mold material processing.

The application of silicone rubber in the above fields is mainly low hardness liquid silicone rubber (with a Shore A hardness of less than 30 degrees), and it is mainly used in the pouring process. Therefore, silicone rubber needs to have characteristics such as low hardness, good flowability, and controllable vulcanization speed. However, the preparation of low hardness rubber often requires a large amount of silicone oil or a small amount of reinforcing filler.

Therefore, low hardness silicone rubber often has disadvantages such as easy oil leakage, sticky feel, slow vulcanization speed, and poor mechanical properties, greatly limiting the application of low hardness rubber.

Low hardness liquid silicone rubber is suitable for vulcanization molding of this series of rubber through various processes such as pouring, injection, and spraying. The hardness range ranges from 0 degrees Shore A hardness to 30 degrees. Both series of products have excellent mechanical properties and a dry feel, without oil leakage, or sticking to the hands. The viscosity, hardness, and vulcanization time of the product can be precisely adjusted according to customer needs.