Cov khoom zoo heev ntawm UHMWPE Fiber

Cov qauv tshwj xeeb ntawm UHMWPE muab nws lub cev zoo heev thiab tshuaj lom neeg, tab sis hloov tau yooj yim linear macromolecular backbone qauv ntawm UHMWPE thiab nws qhov hnyav molecular siab (ntev molecular qaum) kuj txwv cov txheej txheem molding ntawm cov khoom no. Vim nws cov saw ntev molecular, UHMWPE macromolecular saw tseem tuav cov qib siab ntawm kev sib tw curling thiab winding lub xeev tom qab melting, ua rau nws cov viscosity siab nyob rau hauv lub xeev molten, uas tsis tuaj yeem tsim lub viscous flow xeev tab sis lub xeev siab elastic, thiab melting. index yog yuav luag 0. Yog li ntawd, extrusion thiab spinning ua thiab molding txoj kev uas feem ntau siv nyob rau hauv polyethylene tsis tuaj yeem ua tiav los ntawm kub melting. Nyob rau tib lub sijhawm, qhov tseem ceeb shear npaum li cas ntawm UHMWPE nyob rau hauv lub siab elastic xeev yog tsawg, thiab lub viscosity ntawm cov yaj yog heev loj, yog li nws yog ib qho yooj yim ua rau lub nto ntawm cov khoom tsis sib xws, kinking, ntxhib, yaj tawg thiab lwm yam. teeb meem nyob rau hauv cov txheej txheem extrusion los yog txhaj tshuaj molding, uas kuj yog ib qho tseem ceeb uas ua rau cov khoom nyuaj rau txheej txheem. Piv nrog cov pa fibers, UHMWPE fibers muaj kev txhawj xeeb tshaj plaws txog lawv lub zog tensile siab thiab tensile modulus, tsis tshua muaj ntom, thiab muaj kev cuam tshuam siab raws li cov qauv saw hloov tau. Tsis tas li ntawd, UHMWPE fiber ntau muaj rwb thaiv tsev zoo heev, tsis tshua muaj kub tsis kam, tshuaj stability thiab hydrophobicity.
1 Ultra-siab molecular hnyav polyethylene fiber ntau zoo heev txhua yam khoom
UHMWPE fiber ntau muaj cov khoom zoo heev. Nyob rau hauv tib txoj kab ceev, lub zog tensile ntawm UHMWPE fiber ntau yog 15 npaug ntawm cov hlau hlau hlua, 40% siab dua li ntawm aramid fiber ntau, thiab 10 npaug ntawm cov hlau zoo fiber ntau thiab cov fiber ntau zoo tib yam. Piv nrog cov hlau, E-laminated iav, nylon, polyenamine, nws muaj zog dua thiab modulus, thiab muaj lub zog siab tshaj plaws hauv cov khoom siv raw zoo tib yam.
2 Ultra-siab molecular hnyav polyethylene fiber zoo heev ceev thiab lub zog tshwj xeeb
Qhov ntom ntawm UHMWPE fiber ntau yog li ntawm {{0}}.95g/cm3 ~ 0.98g/cm3, uas muaj qhov ntom ntom dua li carbon fiber thiab aramid fiber ntau, thiab qhov ceev yog tsawg dua qhov ntom ntawm cov dej, zoo ib yam. mus rau polypropylene, yog ib tug tshwj xeeb high-kev ua tau zoo fiber ntau nrog ib tug ntom tsawg dua dej.
UHMWPE fiber ntau yog ib yam ntawm lub teeb yuag high-strength fiber ntau, lub zog tshwj xeeb yog zoo dua li carbon fiber, aramid thiab lwm yam tshwj xeeb polymer fiber.
Lub zog tensile ntawm UHMWPE fiber ntau yog li 2.8 ~ 4N / tex (qhov ceev xam ntawm 0.98g / cm3, lub zog tensile yog li 2744MPa ~ 3920MPa). Lub tensile modulus yog hais txog 91 ~ 140N / tex (qhov ceev xam ntawm 0.98g / cm3, ces lub tensile modulus yog hais txog 90GPa ~ 137GPa). Txawm hais tias lub zog tensile ntawm UHMWPE fiber ntau zoo ib yam li cov fibers tshwj xeeb xws li carbon fiber thiab aramid, lub zog tensile tshwj xeeb ntawm UHMWPE yog li 50% siab dua li ntawm aramid thiab carbon fiber, uas yog qhov tseem ceeb tshaj plaws tensile lub zog ntawm polymer. tshwj xeeb fiber tam sim no.
3 Ultra-siab molecular hnyav polyethylene fiber zoo hnav tsis kam
Feem ntau, qhov ntau dua qhov modulus ntawm cov khoom siv raw, qhov qis dua qhov hnav tsis kam, tab sis rau UHMWPE fiber ntau, qhov sib txawv yog qhov tseeb. Vim tias qhov sib txhuam coefficient ntawm UHMWPE fiber ntau tsawg, qhov siab dua qhov modulus, qhov hnyav dua qhov hnav tsis kam. Yog li ntawd, nws hnav tsis kam yog superior rau lwm cov tshuaj fibers zoo heev. Vim nws hnav tsis kam thiab dabtsi yog khoov tsis kam, nws muaj cov khoom zoo heev thiab kev ua haujlwm zoo thiab yooj yim los tsim lwm cov ntaub ntawv polymer thiab textiles.
4 UHMWPE fiber ntau yog resistant rau tshuaj corrosion
Cov qauv tshuaj ntawm UHMWPE fiber ntau yog qhov yooj yim, lub cev muaj zog yog qhov ruaj khov, thiab nws muaj lub siab nyiam ntawm cov qauv siv lead ua siab. Yog li ntawd, cov active gene nyob rau hauv lub zog acid thiab lub hauv paus tsis yog ib qho yooj yim mus tua, thiab tsuas yog ob peb lwm cov organic tshuaj aqueous daws yuav ua rau nws o me ntsis, thiab nws mechanical zog puas tsuaj yog tsawg tshaj li 10%. Ultra-siab cov ntsiab lus polyethylene fibers thiab aramid fibers muaj siab compressive zog tuav tus nqi nyob rau hauv ntau yam tshuaj. Kev tiv thaiv corrosion ntawm ultra-siab cov ntsiab lus polyethylene fiber ntau yog siab dua li ntawm aramid fiber ntau. Nws cov qauv ruaj khov heev hauv cov kua qaub, cov hauv paus thiab cov ntsev, thiab nws lub zog tawg tsuas yog hauv cov tshuaj sodium hypochlorite.
5 UHMWPE fiber ntau muaj lub teeb pom kev zoo
Cov qauv tshuaj ntawm UHMWPE fiber ntau ruaj khov, yog li nws lub teeb ua haujlwm kuj yog qhov zoo tshaj plaws ntawm cov tshuaj fibers tshiab. Lub zog tuav tus nqi ntawm UHMWPE fiber ntau yog pom tseeb siab dua li ntawm nylon, thiab lub zog tuav tus nqi siab thiab qis modulus aramid fiber yog txhim kho.
6 Lwm yam khoom ntawm ultra-siab molecular hnyav polyethylene fiber
UHMWPE fiber ntau muaj hydrophobicity zoo heev, ya raws tsis kam, rwb thaiv tsev thiab kev pab lub neej. Nws cov dej noo tsis kam thiab tiv thaiv txias yog qhov zoo heev, thiab qhov tshwj xeeb lub ntiajteb txawj nqus me me. Nws tsuas yog cov tshuaj fiber ntau tshiab uas tuaj yeem ntab rau hauv dej, thiab nws yog qhov zoo tagnrho rau qhov kub thiab txias fiber ntau. Txawm li cas los xij, nws kuj muaj qhov tsis zoo, uas yog qhov qis melting point. Hauv cov txheej txheem tsim khoom, qhov kub yuav tsum tsis pub tshaj 130 ° C, txwv tsis pub, vim qhov tsis muaj zog ntawm kev sib cuam tshuam ntawm cov qauv molecular ntawm UHMWPE fiber ntau, nws yuav ua rau muaj kev ntxhov siab thiab ua rau lub neej ua haujlwm luv. UHMWPE fibers tsis muaj dye pawg, uas ua rau lawv tsis zoo permeable, thiab dyes tsis tuaj yeem nkag mus rau hauv cov fibers, ua rau cov xim tsis zoo. Qhov kev tsis zoo no cuam tshuam rau ntau yam ntawm nws qhov kev siv tseem ceeb.