Wear-resistant ultra-high molecular weight polyboard manufacturer UHMW poly board manufacturer 02020202 Factors in the production of PVC core foam composite pipes In the process of producing uPVC foam pipes, some waste products will inevitably be generated. These waste products should be comprehensively utilized to benefit the environment. In production, waste products are often sorted and crushed into particles of a certain fineness, and then added to the core foaming dry mix (here the fineness of the crushed particles must be greater than 30 mesh, otherwise it is difficult to mix evenly with the core foaming dry mix powder), so that it can be reused to produce the foam core layer to achieve the purpose of comprehensive utilization. Of course, the formula of core foaming needs to be adjusted to a certain extent, and a certain amount of stabilizer, lubricant and foaming agent needs to be added. UHMWPE has a very low friction factor (0.05 to 0.11), so it has excellent self-lubricating properties. Compared to the friction factor of its engineering plastics. The kinetic friction factor of UHMWPE is 1/2 of PA66 and POM under water lubrication, and is second only to polytetrafluoride (PTFE), which is self-lubricating in plastics without lubrication; when it works in sliding or rotating form, it has better lubricity than steel and brass when lubricated. Therefore, in the tribology field, UHMWPE is known as a friction material with excellent cost/performance. Corrosion resistance UHMWPE has excellent chemical resistance. In addition to strong oxidizing acids, it can resist various corrosive media (acids, alkalis, salts) and organic media (except solvent) within a certain temperature and concentration range. It is impregnated for 30d in 80 kinds of organic solvents at 20℃ and 80℃. There is no abnormality in appearance, and there is almost no change in other physical properties. Noise performance UHMWPE has excellent impact energy recovery, impact energy recovery value in all plastics, so it has good noise damping performance and excellent sound cutting effect. UHMWPE used in the nuclear industry has excellent low temperature resistance and is still ductile at liquid helium temperature (-269℃), so it can be used as a low-temperature resistant component in the nuclear industry. No UHMWPE hygiene, can be used in contact with food and. Adhesion capacity UHMWPE surface adhesion is very weak. Its anti-adhesive ability is second only to PTFE, which is not sticky in plastics, so the surface of the product is not easy to stick with other materials. Low water rate