UHMWPE, tseem hu ua high-strength high-modulus polyethylene, tam sim no yog ib qho ntawm lub ntiaj teb no cov ntaub ntawv ua tau zoo.Vim nws cov khoom zoo heev xws li kev tiv thaiv corrosion, hnav tsis kam thiab qhov ntom ntom, nws yog tam sim no siv rau hauv cov khoom siv tiv thaiv tub rog, cov khoom siv tub rog, cov cuab yeej siv dav hlau thiab lwm yam tub rog.
UHMWPE, tseem hu ua high-strength high-modulus polyethylene, tam sim no yog ib qho ntawm lub ntiaj teb no cov ntaub ntawv ua tau zoo.Vim nws cov khoom zoo heev xws li kev tiv thaiv corrosion, hnav tsis kam thiab qhov ntom ntom, nws yog tam sim no siv rau hauv cov khoom siv tiv thaiv tub rog, cov khoom siv tub rog, cov cuab yeej siv dav hlau thiab lwm yam tub rog.Txoj kev loj hlob ntawm kev ua tau zoo fiber ntau yog lub hauv paus ntawm ib lub teb chaws cov khoom siv tub rog, thiab cov khoom siv siab heev tuaj yeem ua rau cov tub rog siv tshuab siab heev, uas tau dhau los ua cov khoom siv tseem ceeb hauv kev tsim kho lub teb chaws niaj hnub muaj zog, thiab tuav txoj haujlwm txiav txim siab hauv thaj chaw ntawm cov khoom siv tub rog thoob ntiaj teb.
- Cov khoom ntawm UHMWPE fiber ntau
UHMWPE fiber ntau muaj cov khoom zoo heev, nws cov txheeb ze ntom ntom me me, tuaj yeem ntab rau hauv dej.ThiabUHMWPE fiber ntauyog lub zog fiber ntau hauv ntiaj teb tam sim no.Piv nrog rau cov hlau, UHMWPE fiber ntau yog ntau tshaj kaum npaug zog dua cov hlau zoo.Tsis tas li ntawd, UHMWPE fiber ntau kuj muaj zog tiv thaiv corrosion, tshuaj tiv thaiv, hnav tsis kam thiab lwm yam khoom, kev ua tau zoo, UHMWPE fiber ntau hauv ntau qhov tseem ceeb hauv Suav teb ua lub luag haujlwm tseem ceeb.
1.1 Zoo heev mechanical zog
Piv nrog rau lwm cov fibers uas muaj kev ua tau zoo, UHMWPE fiber ntau yog qhov thib ob nkaus xwb rau cov pa PE fiber ntau thiab polypropylene fiber ntau, thiab nws yog cov khoom siv fiber ntau zoo nrog qhov tsawg tshaj plaws ntawm cov ntaub ntawv mos mos.Nws tuaj yeem txo qhov hnyav ntawm cov khoom siv thiab ua tiav lub teeb yuag thaum ua kom cov mos txwv zoo dua.
Piv nrog rau lwm yam khoom, lub zog tensile ntawm UHMWPE tsuas yog thib ob ntawm PBO thiab polyaryl ester fiber, thiab nws tsuas yog 0.1 txawv ntawm polyaryl ester fiber ntau.Nws tuaj yeem pom tias UHMWPE muaj lub zog tensile zoo heev.
Piv nrog rau lwm cov fibers, qhov pib modulus tsuas yog thib ob rau PBO thiab carbon fiber, uas qhia tau hais tias cov fibers muaj ib tug kuj zoo tiv thaiv kev puas tsuaj nro thiab tsis nquag deformation.Nws yog ib yam ntawm cov yam ntxwv fiber ntau nrog ultra-siab tshwj xeeb lub zog thiab tshwj xeeb modulus, uas plays lub luag haujlwm tseem ceeb hauv cov khoom siv mos mos.
1.2 Hluav taws xob rwb thaiv tsev kev ua tau zoo
UHMWPE fiber ntau reflectance radar yoj tshwm sim yog tsawg heev, nrog kev ua haujlwm siab, txhim khu cov dielectric tas li ntawm cov khoom sib xyaw.Txawm hais tias qhov dielectric tas li thiab poob tus nqi ntawm polyethylene yog qhov tsawg tshaj plaws ntawm lwm cov ntaub ntawv, UHMWPE fiber ntau muaj qhov ua tau zoo uas cov khoom siv polyethylene tsis tuaj yeem ncav cuag, thiab nws muaj txiaj ntsig zoo dua li cov ntaub ntawv dav dav, yog li nws yog cov khoom siv rau radar radome. siab zoo thiab lub teeb nyhuv.
1. 3 Huab cua tsis kam thiab hnav tsis kam
UHMWPE fiber ntau muaj cov huab cua tiv thaiv zoo heev thiab tuaj yeem ua kom qhov kev ua haujlwm siab zoo tsis hloov tom qab lub teeb pom kev ntev thiab ib puag ncig hnyav.Tib lub sijhawm, UHMWPE fiber ntau muaj qhov hnav tsis kam thiab khoov qaug zog dua li aramid fiber ntau hauv cov ntaub ntawv ua haujlwm siab, yog li kev hnav tsis kam ntawm cov fiber ntau no zoo dua li lwm cov fibers ua haujlwm siab.Vim nws lub siab hnav tsis kam thiab kev ua haujlwm yooj yim, nws muaj daim ntawv thov kev cia siab zoo hauv kev lag luam.
1. 4 Tshuaj tiv thaiv corrosion
Cov qauv sab hauv ntawm UHMWPE fiber ntau yog nruj.Nws yog precisely vim hais tias ntawm lub siab crystallinity thiab orientation ntawm molecular saw nyob rau hauv lub fiber uas lub fiber muaj ib tug muaj zog tshuaj inertia.Yog li ntawd, nyob rau hauv lub xeev cov kua qaub thiab lub hauv paus los yog lub xeev siab thiab tsis kub, cov fiber ntau tuaj yeem ua rau nws qhov kev ua tau zoo tsis hloov mus ntev, thiab tseem hloov mus rau thiab ua si nws cov nqi hauv qhov hnyav.
1. 5 Nws tus kheej-lubricating zog
UHMWPE cov ntaub ntawv piv nrog lwm cov ntaub ntawv engineering, UHMWPE cov ntaub ntawv muaj kev sib txhuam tsawg heev, tsis tshua muaj kev sib txhuam ua rau cov fiber ntau nws tus kheej zoo dua nws tus kheej lubricating kev ua tau zoo, nws yog cov khoom siv zoo tshaj plaws hauv cov ntaub ntawv yas nyob rau hauv cov xwm txheej tsis muaj roj nplaum, yog li UHMWPE cov khoom siv dav siv. hauv engineering, nrog rau kev siv tus nqi siab heev.UHMWPE fiber ntau yog siv nyob rau hauv lub lag luam ntawm lub tshuab, piv rau cov tsoos hlau thiab tooj dag nyob rau hauv lub lag luam ntawm lub lubricant yog zoo dua.Yog li ntawd, piv nrog cov ntaub ntawv zoo tib yam, UHMWPE fiber ntau tsis tsuas yog txuag cov khoom siv raw, tab sis kuj lav cov txiaj ntsig zoo, yog li nws muaj txiaj ntsig siv ntau dua.
2. Txoj kev npaj ntawm UHMWPE fiber ntau
2.1 Gel spinning txoj kev
Muaj ntau txoj hauv kev los npaj kev ua haujlwm siab UHMWPE fiber ntau, tab sis vim yog vim li cas ntawm cov kuab tshuaj nws tus kheej, kev npaj ntawm UHMWPE fiber ntau tsis tuaj yeem ua tiav.Gel spinning yog txoj kev zoo tshaj plaws.Gel spinning txoj kev sib txawv ntawm cov kev daws teeb meem dav dav los yog ntub dej spinning, feem ntau yog siv cov khoom hnyav molecular polymers li raw khoom, ua los ntawm semi dilute tov li spinning dope, hloov tau yooj yim molecule saw tov rau tangles nyob rau hauv lub semi dilute tov, thiab ces spinning, crystallization, siab tensile stretch saw, tom qab rho tawm kev kho mob mus rau lub sij hawm lub thermal stretching, uas yog ua los ntawm siab zog thiab siab modulus fibers.Txoj kev gel spinning muaj cov yam ntxwv hauv qab no: (1) ultra-siab molecular hnyav polymer yog siv los ua raw khoom; (2) siv cov tshuaj semi-dilute li spinning stock;(3) hyperthermal stretching tau ua tiav, thiab qhov sib piv tensile ntau dua 30.
2.2 Plasticizing yaj spinning txoj kev
Melt spinning yog ua los ntawm polymer yaj los ntawm yaj spinning thiab extruding.Plasticized yaj spinning yog nyob rau hauv lub hauv paus ntawm yaj spinning, ntxiv ib tug tsim nyog tus nqi ntawm diluent mus rau lub polymer yaj rau spinning, los ntawm cov ntxaib ntsia hlau sib tov hnyav, thiab ces extruded, soaked nyob rau hauv tus neeg sawv cev extraction, thiab ces rov stretching thaum kawg tau siab zog. thiab siab modulus polyethylene fiber ntau.
2.3 High pressure solid state extrusion method
Lub hauv paus ntsiab lus ntawm extrusion forming yog hais tias granular cov kuab tshuaj yog ntxiv rau lub extruder, cov khoom chim uas muaj cov kuab tshuaj yog rhuab mus rau lub melting kub, yog li ntawd cov khoom yog molten, tus neeg sawv cev molten yog thauj mus rau lub taub hau ntawm lub tshuab. ruaj khov, thiab tom qab txias thiab shaping, cov khoom kawg yog solidified.Kev kub siab khoom extrusion txoj kev yog nyob rau hauv lub hauv paus ntawm extrusion txoj kev kub siab melting, tsim hnyav, ces los ntawm lub dav hlau qhov, thiab ces siab tensile, thiab thaum kawg tau siab molecular hnyav polyethylene.
2.4 Nto crystallization txoj kev
Vim qhov kev loj hlob qeeb ntawm fibrous siv lead ua, txoj kev no tsis tshua siv rau hauv kev npaj ntawm UHMWPE fiber ntau.
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Post lub sij hawm: Oct-14-2018