UHMWPE Incazelo Namazwana

Incazelo

I-UHMWPE isifinyezo se-Ultra High Molecular Weight PolyEthylene

I-UHMWPE iwumugqa, ingcindezi ephansi, i-Ziegler-type-catalyst, i-polyethylene resin.

Amazwana

I-UHMWPE inesisindo samangqamuzana esinesisindo esijwayelekile ngokwedlulele, cishe esiphindwe kashumi kunesisindo samangqamuzana aphezulu, ama-High density polyethylene (HDPE) resins.

Ngenxa yokuminyana kwayo okuphezulu kwamangqamuzana, i-UHMWPE inokubili ukumelana okuphezulu kakhulu kokuhuzuka namandla omthelela aphezulu kunawo wonke anoma iyiphi ipulasitiki.

Eqinisweni, impama ewugqinsi engu-25mm (1″) ingamisa i-slug yesibhamu esingu-0.38 caliber ku-150 mm (6″).

I-UHMWPE ingemuva elilula (PE) polymers anezakhiwo ezihlukile.

I-UHMWPE inamandla omthelela aphezulu kakhulu phakathi kwamanye ama-polymers wobunjiniyela kanye nokuhuzuka okuhle kakhulu nokumelana nokugqokwa, i-biocompatibility, ukumelana nomsindo, i-coeficient ephansi kakhulu yokungqubuzana, ukumelana okuhle kwamakhemikhali nokumelana nokufakwa kukagesi.

Kuhlanganiswe nokumelana nokuhuzuka kanye nokuqina, i-coefficient ephansi yokungqubuzana kwe-UHMWPE ikhiqiza indawo yokuzithambisa, engabambeki.

Ama-coefficients aqinile futhi aguqukayo aphansi kakhulu kunensimbi kanye nezinto eziningi zepulasitiki.

I-UHMWPE ingasebenza njenge-biomaterial, ikakhulukazi njengengqikithi yezingxenye ezishintshayo ezihlanganyelwe njengesibonelo i-hip prosthesis noma noma yikuphi ukuhlinzwa okushintshwa kwamalunga.

Izingxenye ezenziwe nge-UHMWPE zingaphansi kokulayishwa okuyinkimbinkimbi ngokuhamba kwesikhathi eside.

I-UHMWPE ine-viscosity ephezulu ngisho nangaphezulu kwezinga lokushisa elincibilikayo.

Ngakho-ke, kunzima ukucubungula i-UHMWPE emsulwa ngokubumba umjovo, ukubumba igalelo, noma ukukhishwa kwesikulufu esivamile.

Kodwa-ke, ukunciphisa i-viscosity ngokufaka ama-oligomers ama-short chain kungathinta izakhiwo zemikhiqizo.

Ukusetshenzwa okungekuhle kukhawulela izinhlelo zokusebenza ezikhona ze-UHMWPE.

Ukuze kube lula ukucutshungulwa kwayo kwezicelo, i-UHMWPE ihlanganiswe ne-polyethylene (PE), i-polypropylene (PP), i-polyacrylate (PA), i-polycarbonate (i-PC), i-polyaniline (i-PANI), nezinye izinto zokuthuthukisa izakhiwo zama-polymers anjalo.

I-high density polyethylene (HDPE) isetshenziswe kabanzi embonini ngenxa yokucutshungulwa okuhle, izakhiwo ezifiselekayo kanye nezindleko eziphansi uma kuqhathaniswa.

Inhlanganisela ye-UHMWPE/HDPE idonse ukunaka okukhulu njengento ethembisayo yokulungisa amajoyinti omuntu ngoba inhlanganisela enjalo inokumelana kangcono nokukhuphuka kune-UHMWPE ehlanzekile.

Ngaphezu kwalokho, i-HDPE iphinde ibe i-polymer ehambisana ne-biocompatible futhi ukuba khona kwe-HDPE kungathuthukisa ukucutshungulwa kwenhlanganisela ye-UHMWPE.

Izakhiwo eziningi zenhlanganisela ye-UHMWPE/HDPE ziye zacutshungulwa, njengokusebenza kokucubungula, izakhiwo ze-rheological, izakhiwo ze-oxidative ezishisayo kanye nokuziphatha komthelela.

Uma i-UHMWPE ingaziwa kangako ngaphandle kwendilinga yongoti, ukusetshenziswa kwayo kwaziwa kakhulu embonini, emikhakheni yezokwelapha kanye neyokuvikela.