What raw materials are needed for the oil-resistant rubber sheet in the manufacturing process
Hejian Haida Rubber Products Factory introduces some of the raw materials contained in oil-resistant rubber sheets , so that you can understand more thoroughly and make it easier for you to know more when you buy later!
If the oil-resistant rubber sheet is in contact with the oil medium for a long time during use, the oil can penetrate into the rubber and cause it to swell, which will reduce the strength and other mechanical properties of the rubber. Oil can swell rubber because oil penetrates into the rubber, which causes molecular diffusion, which changes the network structure of the vulcanizate. Depending on the polarity of the rubber and oil, rubber molecules containing polar groups, such as cyano, ester, hydroxyl, and chlorine atoms, will cause the rubber to exhibit polarity. When the polar rubber is in contact with non-polar petroleum oils, the polarities of the two differ greatly, and the rubber is not easy to swell at this time. Such as nitrile rubber, hydrogenated nitrile rubber, acrylic rubber, chlorohydrin rubber, chlorosulfonated polyethylene rubber, fluoro rubber, fluorosilicone, etc. have good oil resistance to non-polar oils. One of the main uses of oil-resistant rubber sheets is as movable seals. Due to the high rotation speed of the rotating shaft, the sealing product must bear a large friction torque, especially in the case of poor lubrication, the heat generated in the sealing area will cause the rubber to stick or improve the adhesion with metal, which will make the seal Failure of the components can lead to seal failure. One of the more effective ways to reduce the temperature in the friction zone is to add a lubricating filler to the rubber to reduce the friction coefficient of the rubber. Such as molybdenum disulfide and graphite are added to the rubber production formula. In addition, using polytetrafluoroethylene (PTFE), polytetrafluoroethylene has excellent resistance to media and atmospheric aging, has a wide range of use, has good self-lubricating properties, and has a small friction factor. It can be coated on the rubber surface. Greatly reduce the surface friction factor of rubber products, improve wear resistance and medium resistance!
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