Polyethylene yapamwamba kwambiri yama cell

Polyethylene yapamwamba kwambiri (UHMWPE, UHMW) ndi kagawo kakang'ono ka thermoplastic polyethylene.

Imadziwikanso kuti high-modulus polyethylene, (HMPE), ili ndi maunyolo aatali kwambiri, okhala ndi mamolekyu ambiri nthawi zambiri amakhala pakati pa 3.5 ndi 7.5 miliyoni amu.Izi zimapangitsa kuti pakhale chinthu cholimba kwambiri, chokhala ndi mphamvu zapamwamba kwambiri kuposa thermoplastic iliyonse yopangidwa pano.

UHMWPE ndi yopanda fungo, yopanda kukoma, komanso yopanda poizoni.Imakhala ndi mawonekedwe onse a polyethylene yapamwamba kwambiri (HDPE) yokhala ndi mikhalidwe yowonjezereka yosagwirizana ndi ma acid ndi ma alkali ambiri, komanso zosungunulira zambiri.Imalimbana kwambiri ndi mankhwala owononga kupatula ma oxidizing acid;ali ndi mayamwidwe otsika kwambiri a chinyezi komanso kugunda kocheperako;ndi kudzipaka mafuta (onani malire mafuta);ndipo imagonjetsedwa kwambiri ndi abrasion, mwa mitundu ina imakhala yosagonjetsedwa ndi abrasion ka 15 kuposa carbon steel.Coefficient of friction yake ndi yotsika kwambiri kuposa ya nayiloni ndi acetal ndipo ikufanana ndi polytetrafluoroethylene (PTFE, polima), koma UHMWPE ili ndi kukana bwino kwa abrasion kuposa PTFE.