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Thermal Properties Of Ultra High Molecular Weight Polyethylene Sheets

Aug 14, 2019

Ultra-high molecular weight polyethylene sheet has many excellent properties. In addition to the well-known wear resistance and impact resistance, the thermal and electrical functions of the product are also outstanding. Ultra-high molecular weight polyethylene sheet has excellent electrical function in a wide temperature range. Its volume resistance is 10-18CM, breakdown voltage is 50KV/mm, dielectric constant is 2.3. At wide temperature and Within the frequency scale.



Its electrical function changes very little. It is suitable for use as structural data for electrical engineering and paper mills in the heat-resistant temperature range. According to the ASTM (load 4.6kg/cm2) method, the heat distortion temperature is 85 ° C. Under a small load, the operating temperature can reach 90 ° C. In special cases, it can be used at higher temperatures due to the super High molecular weight polyethylene sheets are an excellent material for resistance.


Therefore, its low-resistance function is also excellent, and it has a certain ductility at a low temperature of -269 ° C without crack marks. We know that the production of each product has its own use, otherwise it will not be further developed and used. The same is true for the ultra-high molecular weight polyethylene liners we are talking about today. Do all kinds of mechanical parts.


Gears, worm gears, worms, bearings including food machinery; chemical occupation: pumps, valves, baffles, filter plates; and the reason why the ultra-high molecular weight polyethylene liner is used in the above occupations The function of the polymer is inseparable. Because the ultra-high molecular polyethylene is tasteless, non-toxic and odorless, it is non-corrosive. It has the physiological cycling and physiological adaptability and wear resistance.


And the higher the molecular weight, the higher the wear resistance and impact resistance of the data; its impact strength is the highest value in the existing plastics, even at -70 ° C, there is still a suitably high impact strength; it has self-lubricating properties, The water absorption rate is extremely low and non-adhesive; its chemical stability is stable, and it can resist corrosion of various corrosive media such as acid, alkali, salt and organic solvent in a certain temperature and concentration scale.