Structural type is due to the hydrophilic silica rubber and rubber mixing into rubber, harden in the process of storage, the plasticity is reduced, and the gradual loss of smelting and processing of process performance, production is the main cause of structured because the surface of white carbon black and silica in rubber molecules key or raw rubber molecules hydroxyl-terminated generated hydrogen bonding, and chemical combination, The linear polysiloxane was transformed into a solid structure of pseudocrosslinked semi-elastomer, which reduced the solubility of the compound and increased the gel content.

Generally speaking, the plastic can be restored through recycling, the length of recycling time depends on the structural severity of the rubber. In order to reduce the hydrogen bonding of the rubber, reducing the level of rubber structured can join structure control agents, such as hydroxyl silicone oil, diphenyl silicone glycol or alkoxy silane, at the same time also can join the right amount of dimethyl silicone oil to adjust flow performance, the rubber to join in too much of the hydroxyl silicone oil can lead to feel sticky and vulcanizing speed slow, This is about to find a suitable balance point, each type of rubber can be controlled in a appropriate plastic value range, plasticity index on the low side or on the high side of the late affects products processing, plastic value is low, the machining process will be a sticky roller, in the production of products may occur in the process of mucous membrane or bad scar phenomenon; High plastic value will cause structure and poor fluidity of rubber material, and products may lack of glue or flow marks.

From mixing rubber production technology was improved, we now mixing rubber production are step method is adopted, so that the white carbon black and rubber in the process of combination is not completely, while apparent found no apparent anomalies, but sometimes also observed rubber with white dots, can be used in a mixed (room temperature), keeping in good health, mixer technology to produce, Increase the binding degree of silica and raw rubber to improve the structure of rubber.

Another on the selection of raw rubber, raw rubber molecular weight of high and low, raw rubber molecules exist of hydroxyl-terminated or other impurities, cause the raw rubber, molecular weight will affect the mixing rubber processing performance and curing performance, and so on raw material control, D3 front peak, it is best not to have the same molecular weight for the amount of head agent agreement as far as possible, if possible, Count the conversion rate of each batch of raw rubber in the production process, and control the quality of raw rubber well.