Vim tias cov viscosity ntawm ultra-high molecular hnyav polyethylene (UHMW-PE) nyob rau hauv lub xeev molten yog siab li 108Pa * s, lub fluidity yog tsis tshua muaj neeg pluag, thiab nws melt Performance index yog yuav luag xoom, nws yog ib qho nyuaj rau ua tiav los ntawm kev siv machining. .Ultrahigh molecular hnyav polyethylene (UHMW-PE) ua tshuab tau tsim sai heev, los ntawm kev hloov ntawm cov khoom siv ua haujlwm zoo tib yam, tau ua ultrahigh molecular hnyav polyethylene (UHMW-PE) los ntawm thawj nias - sintering molding txoj kev loj hlob mus rau extrusion, tshuab moulding thiab txhaj tshuaj. molding thiab lwm txoj kev tshwj xeeb ntawm molding.
Txoj kev dav dav
1. Nias thiab sintering
(1) Nias thiab sintering yog cov txheej txheem tseem ceeb tshaj plaws ntawm ultra-high molecular hnyav polyethylene (UHMW-PE).Kev ua tau zoo ntawm cov qauv no yog qhov tsawg heev, thiab oxidation thiab degradation yog yooj yim tshwm sim.Txhawm rau txhim kho kev tsim khoom, kev siv hluav taws xob ncaj qha tuaj yeem siv tau
(2) Ultra-high-speed fusion processing method, siv hom hniav sib tov, qhov siab tshaj plaws ntawm kev sib hloov ntawm cov hniav tuaj yeem ncav cuag 150m / s, kom cov khoom tuaj yeem nce mus rau qhov ntsuas kub hauv ob peb feeb xwb.
2. Extrusion molding
Extrusion molding khoom feem ntau suav nrog plunger extruder, ib qho ntsia hlau extruder thiab ntxaib ntsia hlau extruder.Twin-screw extruder feem ntau yog siv tib qho kev taw qhia tig ntxaib-ntsia hlau extruder.
Hauv xyoo 1960, feem ntau ntawm cov plunger extruder tau siv.Nyob rau hauv nruab nrab xyoo 1970s, Nyiv, Tebchaws Meskas thiab Tebchaws Yelemees sab hnub poob tau ua tiav cov txheej txheem ntawm cov ntsia hlau extrusion.Mitsui Petrochemical Lub Tuam Txhab ntawm Nyiv thawj zaug ua tiav qhov kev vam meej ntawm round pas nrig extrusion tshuab nyob rau hauv 1974. Thaum kawg ntawm 1994, φ45 hom ultra-high molecular hnyav polyethylene (UHMW-PE) tshwj xeeb ib leeg ntsia hlau extruder tau tsim, thiab kev vam meej ntawm φ65 hom ib leeg. ntsia hlau extruder yeeb nkab industrial ntau lawm kab tau tiav nyob rau hauv 1997.
(3) Txhaj tshuaj molding
Mitsui Petrochemicals tau tsim cov txheej txheem txhaj tshuaj molding nyob rau hauv 1974 thiab ua lag luam nyob rau hauv 1976, ua raws li reciprocating ntsia hlau txhaj molding.Xyoo 1985, Hoechst kuj paub txog cov txheej txheem kev txhaj tshuaj molding ntawm UHMW-PE.Nyob rau hauv 1983, lub domestic XS-ZY-125A txhaj tshuab tau hloov.Lub ultra-high molecular hnyav polyethylene (UHMW-PE) txhawb lub log thiab lub tes tsho qag rau lub twj tso kua mis rau npias caning ntau lawm kab tau txhaj tshuaj zoo.Xyoo 1985, kev sib koom ua ke rau kev siv kho mob kuj tau txhaj tshuaj zoo.
(4) tshuab molding
Ultra-high molecular hnyav polyethylene (UHMW-PE) ua, thaum cov khoom extrusion los ntawm lub qhov ncauj tuag, vim elastic rov qab thiab ib co shrinkage, thiab yuav luag tsis muaj tshwm sim sagging, yog li hollow ntim, tshwj xeeb tshaj yog loj ntim, xws li roj tank, nruas tshuab moulding los tsim cov dej num zoo.Ultrahigh molecular hnyav polyethylene (UHMW-PE) tshuab moulding kuj tseem tuaj yeem ua rau cov yeeb yaj kiab ua haujlwm siab nrog lub zog sib npaug ntawm txoj kab ntsug thiab kab rov tav, uas daws qhov teeb meem uas lub zog ntawm HDPE zaj duab xis tsis zoo ib yam hauv txoj kab ntsug thiab kab rov tav. ntev thiab yog ib qho yooj yim ua rau longitudinal puas.
Post lub sij hawm: Sep-13-2022
