nkhani

Ultrahigh molecular weight polyethylene (UHMW-PE) ndi mtundu wa pulasitiki waukadaulo wa thermoplastic wokhala ndi mizere yofananira komanso katundu wabwino kwambiri.
Zaka za m'ma 1980 zisanafike, chiwonjezeko chapachaka padziko lonse chinali 8.5%.Pambuyo pa zaka za m'ma 1980, chiwerengero cha kukula chinafika 15% ~ 20%.Kukula kwapakati pachaka ku China kuli pamwamba pa 30%.Mu 1978, kugwiritsidwa ntchito kwa dziko lonse kunali matani 12,000 ~ 12,500, ndipo mu 1990, zofuna zapadziko lonse zinali pafupifupi matani 50,000, omwe United States inali ndi 70%.Kuchokera ku 2007 mpaka 2009, China pang'onopang'ono idakhala fakitale yapadziko lonse lapansi yopanga mapulasitiki, ndipo mafakitale opitilira muyeso a polyethylene adakula mwachangu kwambiri.Mbiri yachitukuko ndi motere:
Chiphunzitso choyambirira cha ultrahigh molecular weight polyethylene fiber chinaperekedwa koyamba mu 1930s.
Kutuluka kwa kupota kwa gel osakaniza ndi kupota kwapulasitiki kwapanga bwino kwambiri paukadaulo wa polyethylene wopitilira muyeso wama cell.
M'zaka za m'ma 1970, Capaccio ndi Ward ku yunivesite ya Leeds ku United Kingdom anayamba kupanga ulusi wolemera kwambiri wa polyethylene wokhala ndi molekyulu yolemera 100,000.
Mu 1964, idapangidwa bwino ndikuyika kupanga mafakitale ku China.
Mu 1975, Netherlands anatulukira Gelspinning ntchito decalin monga zosungunulira, bwino anakonza UHMWPE CHIKWANGWANI, ndi ntchito patent mu 1979. Patapita zaka khumi kafukufuku, izo zatsimikiziridwa kuti gel osakaniza kupota njira ndi njira yothandiza popanga mkulu mphamvu polyethylene CHIKWANGWANI. yomwe ili ndi tsogolo labwino la mafakitale.
Mu 1983, ultra-high molecular weight polyethylene (UHMWPE) fiber inapangidwa ku Japan ndi gel extrusion ndi njira yotambasula kwambiri ndi parafini monga zosungunulira.
Mu China, kopitilira muyeso mkulu maselo kulemera polyethylene chitoliro anali kutchulidwa monga kiyi Kukwezeleza dongosolo la zipambano dziko sayansi ndi luso mu 2001 ndi Unduna wa Sayansi ndi Technology (2000)056 chikalata, amene ali zipangizo zatsopano mankhwala ndi zatsopano.Unduna wa Sayansi ndi Ukadaulo wa State Planning Commission watchulapo ultra-high molecular weight polyethylene chitoliro ngati projekiti yofunika kwambiri pantchito yayikulu yamakampani apamwamba kwambiri.
Dziwani njira
Polyethylene Ultra-high molecular weight polyethylene ndi mtundu wa polymer pawiri, ndizovuta kukonza, ndipo imakhala ndi kukana kwapamwamba kwambiri, kudzipaka mafuta, mphamvu yayikulu, kukhazikika kwamankhwala, magwiridwe antchito amphamvu oletsa kukalamba, kotero pakusankhana zoona ndi zabodza. polima polyethylene, tiyenera kulabadira makhalidwe ake, yeniyeni tsankho njira motere:
1. Lamulo loyezera: gawo la zinthu zopangidwa ndi polyethylene yoyera kwambiri ya polyethylene ili pakati pa 0,93 ndi 0,95, kachulukidwe kake ndi kakang'ono, ndipo amatha kuyandama pamadzi.Ngati si polyethylene yoyera, imamira pansi.
2. Njira yowonera: pamwamba pa polyethylene yeniyeni yochuluka kwambiri ya maselo ndi yathyathyathya, yunifolomu, yosalala komanso kachulukidwe ka gawolo ndi yunifolomu kwambiri, ngati sichiri choyera cha polyethylene mtundu wa zinthu ndi mdima ndipo kachulukidwe si yunifolomu.
3 m'mphepete kuyesa njira: koyera kopitilira muyeso-mkulu maselo kulemera polyethylene flanging mapeto nkhope ndi kuzungulira, yunifolomu, yosalala, ngati si koyera polyethylene zinthu flanging mapeto mng'alu, ndipo pambuyo Kutentha flanging adzaoneka slag chodabwitsa.