​The function and difference of silicone hardness and softness

For consumers who do not understand the material of silicone, the physical hardness of silicone rubber products may be ignorant. The size of the product is the same without too much change, and the relationship between the formula and various physical properties has not been fully understood. All kinds of silicone, rubber and other raw materials have their hardness and softness characteristics, and natural silicone products are no exception. So why silicone materials can be used in all walks of life around the world, officially because of its excellent hardness!

 

Different silicone products have their unique performance and process requirements. For example, the silicone seals and accessories of silicone manufacturers can choose the most suitable polymer and coordination and make a reasonable deployment, so as to achieve a close fit in terms of hardness and softness. Sealing and shock absorption, waterproof and oil proof, and the physical properties of hardness and softness are still closely related to the formula and raw materials of the product. The adjustment of the formula can test various performance differences and functions, so the adjustment of the hardness and softness is still needed. Be cautious, otherwise errors in the hardness and softness may cause unavoidable troubles!

Everyone knows that silicone material has good tensile strength, and the index of tensile strength depends on the hardness of the product. Generally, the hardness of silicone rubber products manufacturers is about 20-80 degrees, and the lower the hardness of the product The tensile strength is better, generally it can reach about 300% normally, and the lowest is about 20%, but it still depends on the structure and shape of the silicone product.

Silicone material is indispensable. This is the tear strength. Silicone rubber materials will tear due to stress and other factors. This is one of the inevitable phenomena of all rubber materials. Cracks and cracks will cause damage due to force cracking. Occupies a minority, because the conventional hardness of silicone rubber is basically free of tearing and rupture, and the material with higher hardness is likely to cause tearing due to the spread of the rip!

Therefore, the tensile strength and hardness of silicone products are important indicators of materials. In the vulcanization production procedures of silicone manufacturers, the greater the silicon molecular weight of the rubber compound, the greater the effective cross-linking tensile stress. In order to obtain the prescribed constant elongation stress, the crosslink density can be appropriately increased for materials with a smaller molecular weight. Any structural factor that can increase the force between molecules. Increasing the density of the silicone material can prevent the hardness of the product from affecting the tensile strength of the product!

Link to this article:​The function and difference of silicone hardness and softness

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Author: ceq12 1222