Load capacity of Ultra-high-molecular-weight polyethylene sheet
UHMWPE block is a new type of polymer material. Everyone is familiar with it. Its moderate price and excellent performance are a well-known thermoplastic engineering plastic (structure: synthetic resin, plasticizer, stabilizer). Pigment), the board now almost concentrates the outstanding advantages of various plastics, and has the unmatched wear resistance, impact resistance, corrosion resistance, self-lubrication, impact energy absorption, and hygiene of ordinary polyethylene liners and other engineering plastics. Non-toxic, not easy to adhere, low temperature resistance, not easy to absorb water, low density (unit: g/cm3 or kg/m3) and other comprehensive properties.
Ultra-high-molecular-weight polyethylene sheet at present, most of the processing of ultra-high-molecular-weight polyethylene sheet is sintering molding method, and plunger extrusion method is also used but the output is very low. Nylon parts have good dielectric properties and resistance to environmental stress cracking. The melting temperature is 220~260C. For materials with larger molecules, the recommended melting temperature range is between 200 and 250C. The quality of boron-containing polyethylene board raw materials determines the quality of the board product. High-quality raw materials with a molecular weight of more than 3 million are selected and scientifically formulated, and only a reasonable process can obtain high-quality products.
For ultra-high molecular weight polyethylene sheets, its load-bearing capacity is not like that of metal materials, which mainly depends on the strength and stiffness of the material. In addition, because the mechanical properties of high polymers are greatly affected by temperature, their load-bearing capacity It also has a great relationship with the environmental temperature of the material, the size of the friction coefficient of the material, the hysteresis energy consumption and the modification of the material. Therefore, the strength and strength design of UHMWPE sheet is much stronger than that of metal. These are the main determinants of the load-bearing capacity of UHMWPE sheets. We must make reasonable use of it to fully demonstrate its performance and obtain better benefits.