Rubber is a kind of high elastic polymer material with reversible deformation. It is elastic at room temperature. It can produce large deformation under a small external force, and can recover to its original state after removing external force. Rubber is a completely amorphous polymer, its glass transition temperature (TG) is low, and its molecular weight is often large, more than several hundred thousand.
Rubber is divided into natural rubber and synthetic rubber. Natural rubber is made by extracting gum from rubber tree, rubber grass and other plants, while synthetic rubber is obtained by polymerization of various monomers. Rubber products are widely used in industry and life.
There are many kinds of rubber products, but the production process is basically the same. The basic technological process of rubber products with raw rubber as raw material includes six basic processes: plasticizing, mixing, calendering, extrusion, molding and vulcanization. Of course, the preparation of raw materials, finishing of finished products, inspection and packaging and other basic processes are also indispensable. Rubber processing process is mainly to solve the contradiction between plasticity and elasticity. Through various technological means, the elastic rubber is turned into a plastic compound with plasticity, and then semi-finished products are made by adding various compounding agents, and then the semi-finished products with plasticity are turned into rubber products with high elasticity and good physical and mechanical properties through vulcanization.It is mainly used in: transportation, industrial mines, agriculture, forestry, water conservancy, military defense, civil engineering, electrical communication, medical and health care, commodity storage, culture, education, sports, daily necessities, etc......
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