For consumers do not know the silicone material physical hardness of silicone rubber products are likely to produce out-of-touch heart, product size is the same did not change too much, and the relationship between the formula and various physical property is not complete to understand, all kinds of silicone, rubber and other hard material of raw materials has its softness characteristics, natural silica gel products is not exceptional also, So why silicone material can be used in all walks of life in the world, it is because of its excellent hardness!

Different silica gel products has its unique performance and technical requirements, such as silicone manufacturer of silica gel seal, 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 raw materials have a close relationship, Formula debugging can try out a variety of performance differences and functions, so the hard and soft debugging or need to be careful, otherwise the hard and soft error is likely to cause inevitable trouble!

As we all know, silica gel material has good tensile strength, and the index of tensile strength depends on the degree of hardness and softness of the product. Silicon rubber product manufacturers generally have a hardness of 20-80 degrees, and the lower the hardness, the better the tensile strength of the product. The normal tensile strength can reach about 300% and the lowest is about 20%. However, it depends on the structure and shape of silicone products.

Silicone rubber material can not be missing this is the tearing strength, silicone rubber material will tear due to stress and other factors, which is one of the inevitable phenomenon of all rubber materials, and cracks and cracks caused by stress cracking phenomenon occupy a minority, because silicone rubber with conventional hardness basically will not tear phenomenon. Hard materials are likely to be torn by the spread of the crack!

Therefore, the tensile strength and hardness of silica gel products are important indicators of materials. In the vulcanization production procedures of silica gel manufacturers, the greater the silicon molecular weight of the mixed rubber, the greater the effective crosslinking and fixed extension stress. In order to obtain the specified fixed elongation stress, the crosslinking density can be appropriately increased for the material with lower molecular weight. Structural factors that increase intermolecular forces. Improving the density of silica gel material can prevent the hardness of the product will affect the tensile strength of the product!