Article source: popularity: 211 published on: May 18, 2020 [small, medium and large]
For consumers who don't know the material of silica gel, the physical hardness of silicone rubber products may be ignorant. The size of the products is the same without too much change. However, the relationship between formula and various physical properties has not been fully understood. All kinds of silica gel, rubber and other raw materials have their own hardness and softness characteristics, and natural silicone products are no exception He silicone material can be used in all walks of life in the world, officially because of its excellent hardness!
Relationship between soft hardness and function of silicone rubber
Different silica gel products have their own unique performance and process requirements. For example, the most suitable polymer and matching can be selected for the silica gel sealing parts and silica gel accessories of silica gel manufacturers, so as to achieve the functions of sealing, shock absorption, water and oil resistance in terms of hardness and softness. However, the physical properties of hardness and softness are closely related to the formula and raw materials of the products, and the formulation adjustment is also closely related Try to find out the difference and function of all kinds of performance, so the debugging of hardware and software still needs to be careful, otherwise the error of hardware and software 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 hardness and softness of the product. Generally, the hardness of silicone rubber products manufacturers is about 20-80 degrees. The lower the hardness, the better the tensile strength of products. Generally, it can reach 300% left and right, and the minimum is about 20%. However, it depends on the structure and shape of silicone products Yes.
Silicone materials can not be missing, this is the tearing strength, silicone rubber materials will be due to stress and other factors, this is one of the inevitable phenomena of all rubber materials, and cracks and cracks stress cracking caused by the destruction of a small number, because the silicone rubber with normal hardness basically will not have tearing fracture phenomenon, the material with higher hardness is likely to be caused by the crack Diffusion causes tearing!
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 higher the molecular weight of silicone compound, the greater the effective crosslinking elongation stress. In order to obtain the specified tensile stress, the crosslinking density can be appropriately increased for materials with small molecular weight. Any structural factor that can increase the intermolecular force. Increase the density of silica gel material can prevent the hardness of the product from affecting the tensile strength of the product!