Filimka UHMW Polyethylene wuxuu leeyahay iska caabin aad u sarreeya, oo ka sarreeya caabbinta birta.Marka lagu daro iska caabin balaadhan oo kiimiko ah iyo is jiid jiid hoose ayaa ka dhigaysa UHMW qalab injineernimo oo aad u badan oo adeegyo badan oo daran.Sibiqsan sida polymer® Fluoropolymer, laakiin naaxinta iyo xidhashada adkaysta.Polymers-yada UHMW waxay leeyihiin celceliska culeyska kelliyadu 10 jeer ka badan kuwa caadiga ah ee cufnaanta polyetylen.Miisaanka kelliyada sare wuxuu siinayaa UHMW Polymers isku dhafka gaarka ah ee sifooyinka Codsiyada: Dusha gudaha iyo dibedda ee biyaha la cabbi karo, kiimikooyinka, shidaalka iyo tuubooyinka hawo-qaadida, sagxadaha hoose ee skis iyo looxyada barafka, dahaarka looxyada si loo yareeyo isku dhaca iyo xirashada.
Filim ganacsi oo skived ah oo ah polyetylen ultra-high molecular-weight (UHMWPE) oo leh hanuunin sare oo uniaxial1 ayaa la darsay inta lagu guda jiro dhalaalidda iyo kristalisation oo leh waqti-xalin 30 s si loo aqoonsado hababka crystallisation.
Waxaa la ogaaday in crystallisation isotropic ay dhacdo mar kasta oo dhalaalka la kululeeyo ilaa 140 ◦C ama ka badan.crystallisation hanuunsan waxay dhacdaa, haddii dhalaalka lagu hayo 138 ◦C ama ka hooseeya.Heerkulka dhalaalka ugu fiican wuxuu u muuqdaa inuu yahay 136 ◦C.Heerkulkan qaabka nanostructure semirystalline ee filimka asalka ah ayaa si buuxda loo tirtiray, halka xusuusta jihada ee dhalaalka la ilaaliyo.Waxaa intaa dheer, crystallisation isothermal laguma bilaabi karo heerkul ah 110◦C iyo ka sareeya.Heerkulka 105◦C ku jihaysan crystallisation wuxuu bilaabmaa 2.5 daqiiqo ka dib.Lamellae leh dhumuc yar oo si tartiib tartiib ah u koraya inta lagu jiro xilliga isothermal 20 daqiiqo.
Inta lagu guda jiro soo socda crystallisation non-isothermal (heerka qaboojinta: 20◦C/daqiiqo) blocks crystalline yar yar oo isku xidhka-dariska ayaa la sameeyay.Sidaa darteed hababka crystallisation waxay la mid yihiin kuwa laga helay walxaha kale ee polyetylenka ee leh cufnaanta silsiladda ku filan ee ku filan ee hore loo bartay, marka laga reebo qaboojin yar oo la taaban karo oo loo baahan yahay bilawga crystallisation isothermal.
Falanqaynta xogta goobta dhabta ah iyadoo la adeegsanayo CDF-ga kala duwan ayaa la sameeyay.Inta lagu jiro dhalaalka walxaha celceliska dhumucda lakabyada crystalline waxay ahaanaysaa mid joogto ah (27 nm), halka muddada dheer ay si xoog leh u kordheyso 60 nm ilaa 140 nm.Sababtoo ah falanqeyntu waxay muujineysaa in xitaa nanostructure-ka asalka ah uu ku badan yahay isku xirnaanta deriska-xiga kaliya tani waxay ka dhigan tahay in xasilloonida lamella ay si keli ah u kordheyso iyada oo shaqeyneysa masaafada u jirta deriskeeda.Iyadoo qaab dhismeedka asalka ahi uu muujinayo lamellae fidsan, meelaha dib-u-crystallised kamay ballaadhin masaafada u dhaxaysa jihada fiber-ka s3.
Codsiyada waxaa ka mid ah dahaarka qaadaha, biraha hagaha, xadhkaha xadhkaha goosta, hagaha silsiladaha, sawir qaadaha iyo dhimista qaylada.Xidid heer sare ah iyo iska caabin xirasho.
Waqtiga boostada: Jun-17-2017