nkhani

Chifukwa kukhuthala kwa polyethylene (UHMW-PE) yopangidwa ndi polyethylene (UHMW-PE) yosungunuka ndi yokwera kwambiri mpaka 108Pa*s, madziwo ndi otsika kwambiri, ndipo index yake yosungunuka imakhala pafupifupi ziro, ndikovuta kukonzedwa ndi njira zachidule za makina. .Ultrahigh maselo kulemera polyethylene (UHMW-PE) processing luso wakhala mofulumira anayamba, mwa kusintha kwa zipangizo wamba processing, wapanga ultrahigh maselo kulemera polyethylene (UHMW-PE) kuyambira kukanikiza koyamba - sintering akamaumba chitukuko kuti extrusion, kuwomba akamaumba ndi jekeseni. kuumba ndi njira zina zapadera zopangira.
General njira
1. Kukanikiza ndi sintering
(1) Kukanikiza ndi sintering ndiyo njira yoyambira kwambiri yopangira polyethylene (UHMW-PE).Kuchita bwino kwa njirayi ndikotsika kwambiri, ndipo makutidwe ndi okosijeni ndi kuwonongeka ndikosavuta kuchitika.Pofuna kupititsa patsogolo kupanga bwino, kutentha kwamagetsi kungagwiritsidwe ntchito
(2) Ultra-high liwiro maphatikizidwe njira processing, ntchito tsamba mtundu chosakanizira, pazipita liwiro la kasinthasintha tsamba akhoza kufika 150m / s, kotero kuti zakuthupi akhoza kukwera kwa processing kutentha mu masekondi pang'ono chabe.
2. Extrusion akamaumba
Zida zopangira ma extrusion makamaka zimaphatikizapo plunger extruder, single screw extruder ndi twin screw extruder.Twin-screw extruder imagwiritsidwa ntchito kwambiri mbali imodzi yozungulira mapasa-screw extruder.
M'zaka za m'ma 1960, ambiri a plunger extruder ankagwiritsidwa ntchito.M'kati mwa zaka za m'ma 1970, Japan, United States ndi West Germany motsatizana anayambitsa ndondomeko yotulutsa wononga imodzi.Kampani ya Mitsui Petrochemical Company ya ku Japan inayamba kuchita bwino kwambiri mu 1974. Kumapeto kwa 1994, φ45 mtundu wa ultra-high molecular weight polyethylene (UHMW-PE) wapadera single screw extruder inapangidwa, ndipo kupambana kwa mtundu umodzi wa φ65 screw extruder chitoliro kupanga mafakitale mzere unakwaniritsidwa mu 1997.
(3) Kuumba jekeseni
Mitsui Petrochemicals adapanga njira yopangira jakisoni mu 1974 ndikuigulitsa mu 1976, ndikutsatiridwa ndi kukonzanso jekeseni.Mu 1985, Hoechst adazindikiranso njira yopangira jekeseni ya UHMW-PE.Mu 1983, makina opangira jakisoni a XS-ZY-125A adasinthidwa.Magudumu a polyethylene (UHMW-PE) owonjezera kwambiri a molekyulu yolemetsa (UHMW-PE) ndi manja a axle a mpope wamadzi wa mzere wopangira zingwe za mowa adabayidwa bwino.Mu 1985, olowa yokumba ntchito zachipatala nawonso bwino jekeseni.
(4) kuumba nkhonya
Ultra-mkulu maselo kulemera polyethylene (UHMW-PE) processing, pamene zinthu extrusion mkamwa kufa, chifukwa zotanuka kuchira ndi shrinkage ena, ndipo pafupifupi palibe sagging chodabwitsa, kotero muli dzenje, makamaka muli lalikulu, monga thanki mafuta, kuumba ng'oma kuti apange zinthu zabwino.Ultrahigh molecular weight polyethylene (UHMW-PE) kuwomba kuwomba kungayambitsenso filimu yochita masewera olimbitsa thupi yokhala ndi mphamvu zokwanira mumayendedwe olunjika ndi opingasa, zomwe zimathetsa vuto kuti mphamvu ya filimu ya HDPE sikugwirizana ndi njira yowongoka komanso yopingasa. nthawi yayitali komanso yosavuta kuwononga kotenga nthawi.