Ultra-siab-molecular- hnyav polyethylene (UHMWPE) yog siv dav hauv kev lag luam rau nws qhov tshwj xeeb hnav tsis kam, cuam tshuam lub zog, thiab tshuaj lom neeg ruaj khov. Nws cov kev ua tau zoo tshaj yog nyob ze rau cov txheej txheem tsim khoom.
UHMWPE feem ntau yog synthesized los ntawm catalytic polymerization, qhov twg ethylene monomers polymerized nyob rau hauv qis - kub, qis - shear tej yam kev mob los tsim ib tug ntev heev polymer chains. Cov txheej txheem no ua kom muaj qhov hnyav molecular hnyav thaum tswj cov kab saw hlau thiab siab crystallinity.
Thaum lub sij hawm ua, cov khoom siv raw tuaj yeem ua los ntawm compression molding, extrusion, lossis txhaj tshuaj molding. Compression molding feem ntau yog siv rau cov nplooj ntawv thiab cov blocks, ua cov qauv sib xws nrog cov khoom siv zoo heev. Extrusion yog tsim rau cov kav dej, pas nrig, thiab cov profiles, thaum txhaj tshuaj molding tso cai rau cov khoom ntawm complex qhov chaw, muab kub thiab siab tswj kom zoo zoo kom tsis txhob saw breakage los yog uneven crystallization.
Kev tswj xyuas meej ntawm kev ziab, kub, thiab siab thoob plaws hauv kev tsim khoom yog qhov tseem ceeb rau kev ua haujlwm ntawm cov khoom kawg, txhim kho kev ua haujlwm, thiab tswj cov khoom sib xws.
Cov kws tshaj lij hauv kev lag luam tau sau tseg tias raws li cov thev naus laus zis thev naus laus zis txuas ntxiv mus, UHMWPE cov txheej txheem tsim khoom tau raug kho kom zoo, nthuav dav nws cov ntawv thov thoob plaws txhua yam, kev kho mob, kev tiv thaiv, thiab tshuaj lom neeg kev lag luam.