Different silica gel products has its unique performance and technical requirements, such as silicone manufacturers provide silicone seals, silicone accessories can choose the most suitable polymer and cooperation and reasonable allocate, closely joint sealing damping in the hard softness, waterproof and oil etc, and the physical properties of hard softness or with the formula of the product and the raw materials have a close relationship, Formula debugging can try out a variety of performance differences and functions, so hard and soft debugging or need to be careful, otherwise hard and soft error is likely to cause inevitable trouble.
We all know that silica gel material has good tensile strength, and the index of tensile strength depends on the hard and soft degree of the product. Silicone rubber products manufacturers generally have a hard and soft degree of 20-80 degrees, and the lower the hardness, the better the tensile strength of the product. Generally, it can reach about 300%, and the minimum is about 20%. But it depends on the structure and shape of silicone products to decide.
Silicone material can not be missing this is the tear strength, silicone rubber materials will be forced and other factors and tear phenomenon, this is one of the inevitable phenomena of all rubber, and cracks and cracks caused by stress cracking phenomenon accounted for a minority, because silicone rubber with conventional hardness will not have tear rupture phenomenon, Materials with higher hardness are more likely to tear due to diffusion at the opening.
So the tensile strength and hardness of silica gel products is an important index of materials, silica gel processing manufacturers in the vulcanization production procedures, the greater the molecular weight of silicon mixing glue is effective cross-linking fixed elongation stress is greater. In order to obtain the specified constant elongation stress, the crosslinking density can be appropriately increased for the material with small molecular weight. Any structural factor that increases intermolecular forces. Increasing the density of silica gel material can prevent the hardness of the product from affecting the tensile strength of the product.
