Today, the non-asbestos rubber sheet manufacturer will introduce you some knowledge about the specifications of the non-asbestos sheet, I hope it will be helpful to you!
The rubber sheet is divided into insulating rubber sheet, oil resistant rubber sheet, fluorosilicone special rubber sheet, acid and alkali resistant rubber sheet, anti-static, conductive rubber sheet, non-slip rubber sheet and customized rubber sheet. Rubber is a special synthetic elastomer. The carbon atom in the main chain or the side chain is connected to the highly electronegative fluorine atom. Due to the high energy of CF bond (485KJ/mol), the covalent radius of fluorine atom is 0.64A, which is equivalent to half the length of CC bond. Therefore, fluorine atom can well shield the CC main chain and ensure the stability of the CC chain. It has excellent properties that other rubbers cannot match, such as oil resistance, oil resistance and chemical resistance. , Good physical and mechanical properties and weather resistance, electrical insulation and radiation resistance, etc., its comprehensive performance is the better of all synthetic rubbers, commonly known as "Rubber King". The various specifications and materials are mainly due to the need to create various industries.
Asbestos-free rubber sheets are widely used, and the industry is developing rapidly. It is an essential resource for all walks of life.
Regarding the advantages of non-asbestos rubber sheet, its discharge temperature is 10-20°C lower than that of the front roll method, which can save 40% of the mixing time. The order is carbon black softener (including accelerator), carbon black styrene butadiene rubber, cis-butadiene rubber. B Two-stage mixing, segmented rubber mixing method. When used together, this mixing method can improve the properties of butadiene rubber and other rubbers. This method is to increase all ingredients (including cis) compared with the traditional mixing method, which can increase the viscosity of the rubber mixture by 3-4 units and increase the tensile strength of the vulcanized rubber by 2.5 to 3.0Mpa. The preparation process of butadiene rubber includes: preparation and metering of catalyst, terminator and antioxidant, polymerization of butadiene, gelation, dehydration and drying of rubber.
One of the main uses of the rubber sheet is as a movable seal. Due to the high speed of the rotating shaft, the sealing product must withstand greater friction torque, especially in the case of poor lubrication, the heat in the sealing area is very large, which will cause rubber adhesion or improve the adhesion of metal performance. The gasket is damaged and the gasket fails.
One of the more effective ways to reduce the temperature of the friction area is to add lubricating fillers to the rubber to reduce the friction coefficient of the rubber. For example, adding molybdenum disulfide and graphite to rubber production formulations. In addition, using polytetrafluoroethylene (PTFE), polytetrafluoroethylene has excellent neutral resistance and atmospheric aging resistance, a wide range of applications, good self-lubricating properties and a small coefficient of friction. It can be coated on the rubber surface. Greatly reduce the surface friction coefficient of rubber products, improve wear resistance and medium resistance.
Almost all of its polymerization uses continuous solution polymerization process, and most polymerization equipment uses 3 to 5 storage tanks in series, with a single storage tank having a volume of 12-50m. The solvent used and the product obtained vary with the catalyst. ① Production of butadiene rubber with butyl lithium as a catalyst.
The above is all the contents introduced by the non-asbestos rubber sheet manufacturers. For more information, please visit the company's official website!