The scope of application of silicone grease and the reasons for its deterioration
November 12, 2021
Silicone grease is a white silicone refined from modified silicone oil with excellent high and low temperature performance as the Base Oil, special lithium soap as a thickening agent and added with white solid lubricants, anti-oxidation, anti-corrosion and other additives. fat. Silicone grease is a kind of special lubricating grease with a wide use temperature and a wide range of materials. It has excellent waterproof and sealing performance, excellent high and low temperature stability and chemical stability, and can be applied to various metals and metals. It plays a role of lubrication and sealing between plastic and plastic.
Silicone grease is used for long-term lubrication of plastic/plastic, plastic/metal, metal/rubber parts and sliding bearings at low or wide temperature. It is suitable for the dynamics of pneumatic valves and cylinder piston valve bodies and seals. Lubrication and sealing. It is suitable for working occasions that need to effectively reduce the starting torque when starting at low temperature, such as electronic clocks, cameras, optical instruments, conveyors, refrigerator fan bearings, mobile refrigeration equipment and long-term lubrication of servo gears. Over time, silicone grease may deteriorate, so what are the possible factors for deterioration? high temperature. Special attention should be paid to avoid high temperature when using silicone grease. High temperature is one of the main reasons for the deterioration of silicone grease. In addition to playing the role of lubricating and protecting equipment, silicone grease also cools equipment components. High temperature operation will accelerate the loss of additives and base oil. Therefore, in the process of using silicone grease, controlling the temperature of the silicone grease as much as possible can help prevent the deterioration of the silicone grease, such as using a heat exchanger to treat the oil Temperature control. Oxidation. The oxidation of silicone grease is the reaction of oil molecules with oxygen molecules. Oxidation will cause the viscosity of silicone grease to increase, the formation of paint film, sludge, and precipitation. Oxidation will also accelerate the exhaustion of additives and cause the decomposition of the base oil. Once the silicone grease starts to oxidize, the acid value will begin to rise. In addition, oxidation can also cause rust and corrosion of the equipment. Pollution. Silicone grease should be protected from contamination during use, including water, dust, air, various impurities, other silicone greases, and so on. Various metal materials in some metal equipment, such as copper, iron, etc., will play a catalytic role in accelerating the oxidative deterioration of oil, promoting the viscosity of silicone grease to increase, and generating acidic substances to corrode mechanical parts.
