I-Ultra-high-molecular-weight polyethylene (UHMWPE, UHMW) isethi engaphansi ye-thermoplastic polyethylene.
Eyaziwa nangokuthi i-high-modulus polyethylene, (HMPE), inamaketanga amade ngokwedlulele, enesisindo samangqamuzana ngokuvamile phakathi kwezigidi ezingu-3.5 nezingu-7.5.Uchungechunge olude lusebenza ukudlulisa umthwalo ngokuphumelelayo kumgogodla we-polymer ngokuqinisa ukusebenzisana kwe-intermolecular.Lokhu kubangela into eqinile kakhulu, enamandla amakhulu okushayisana kwanoma iyiphi i-thermoplastic eyenziwe manje.
I-UHMWPE ayinaphunga, ayinambitheki, futhi ayinabuthi.Ihlanganisa zonke izici ze-high-density polyethylene (HDPE) enezici ezengeziwe zokungazweli kuma-asidi agxilile nama-alkali, kanye nezinyibilikisi eziningi eziphilayo.Imelana kakhulu namakhemikhali abolayo ngaphandle kwama-oxidising acid;inokumunca umswakama ophansi kakhulu kanye ne-coefficient ephansi kakhulu yokungqubuzana;uyazigcoba (bheka ukugcotshwa komngcele);futhi imelana kakhulu nokuhuzuka, kwezinye izinhlobo imelana ngokuphindwe ka-15 ukuhuzuka kune-carbon steel.I-coefficient yayo yokungqubuzana iphansi kakhulu kunaleyo inayiloni ne-acetal futhi iqhathaniswa naleyo ye-polytetrafluoroethylene (PTFE, i-polymer), kodwa i-UHMWPE inokumelana nokuhuzuka okungcono kune-PTFE.
Isikhathi sokuthumela: Jun-30-2017