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What are the requirements for plasticity in the processing of raw rubber? What is wrong with too much or too little?
The plasticity of raw rubber should be appropriate, too big or too small will produce bad effect. If the plasticity of raw rubber is too large, the physical and mechanical properties of vulcanized rubber will be reduced, which will affect the performance of products. The plasticity of raw rubber is too low, it will cause processing difficulties, so that the rubber is not easy to mix evenly; calendering, pressing out the semi-finished product surface is not smooth; shrinkage penalties, not easy to grasp the size of the semi-finished product; calendering tape is difficult to rub into the fabric, resulting in the hanging of the rubber curtain off the skin and other phenomena, greatly reducing the adhesion with the material between the layers. Plasticity if uneven will also cause the process properties of rubber and physical and mechanical properties are not consistent.
Rubber processing technology on the plasticity of raw rubber have certain requirements. Generally speaking: for coating, dipping, scraping and manufacture of sponge rubber rubber with rubber, plasticity is required to be higher; requirements for high physical and mechanical properties, semi-finished products and molding rubber with good stiffness, plasticity should be low; plasticity of the press out of the plasticity of the plasticity of the material is between the two.
