1. Kev txhais ntawm cov fibers aramid
Aramid fiber yog lub npe ua ke rau cov fibers aromatic polyamide.
2. Kev faib tawm ntawm cov fibers aramid
Raws li cov qauv molecular, aramid fiber muaj peb hom: para-aromatic polyamide fiber, inter-aromatic polyamide fiber, aromatic polyamide copolymer fiber. Ntawm lawv, para-aromatic polyamide fibers muab faib ua poly-phenylamide (poly-p-aminobenzoyl) fibers, poly-benzenedicarboxamide terephthalamide fibers, inter-position benzodicarbonyl terephthalamide fibers muab faib ua poly-m-tolyl terephthalamide fibers, poly-N,Nm-tolyl-bis-(isobenzamide) terephthalamide fibers.
3. Cov yam ntxwv ntawm cov fibers aramid
1. Cov khoom siv kho tshuab zoo
Interposition aramid yog ib qho polymer uas yooj ywm, muaj zog tawg ntau dua li cov polyester, paj rwb, nylon, thiab lwm yam, nws elongation loj dua, mos rau qhov kov, thiab nws tig tau zoo, thiab nws tuaj yeem tsim ua ntau yam slenderness, ntev ntawm cov fibers luv luv thiab filaments, feem ntau cov tshuab textile siv cov xov paj sib txawv los ua cov ntaub, cov ntaub tsis-woven, tom qab ua tiav, kom ua tau raws li qhov xav tau ntawm ntau qhov chaw ntawm cov khaub ncaws tiv thaiv.
2. Hluav taws kub thiab cua sov zoo heev
Tus ntsuas pa oxygen txwv (LOI) ntawm m-aramid yog 28, yog li nws tsis txuas ntxiv hlawv thaum nws tawm hauv nplaim taws. Cov khoom siv hluav taws kub ntawm m-aramid yog txiav txim siab los ntawm nws cov qauv tshuaj lom neeg, ua rau nws yog cov fiber hluav taws kub tas mus li uas tsis lwj lossis poob nws cov khoom siv hluav taws kub nrog lub sijhawm lossis ntxuav. Lub m-aramid ruaj khov thiab tuaj yeem siv tas mus li ntawm 205 ° C thiab tswj tau lub zog siab ntawm qhov kub siab dua 205 ° C. Lub m-aramid muaj qhov kub thiab txias decomposition siab thiab tsis yaj lossis ntws ntawm qhov kub siab, tab sis tsuas yog pib hlawv ntawm qhov kub siab dua 370 ° C.
3. Cov khoom siv tshuaj ruaj khov
Ntxiv rau cov kua qaub thiab cov hauv paus muaj zog, aramid tsis cuam tshuam los ntawm cov organic solvents thiab roj. Lub zog ntub ntawm aramid yuav luag sib npaug rau lub zog qhuav. Kev ruaj khov ntawm cov dej noo noo zoo dua li lwm cov organic fibers.
Aramid muaj zog tiv taus lub teeb UV. Yog tias raug tshav ntuj ntev, nws yuav poob zog ntau thiab yog li ntawd yuav tsum tau tiv thaiv nrog ib txheej tiv thaiv. Txheej tiv thaiv no yuav tsum muaj peev xwm thaiv kev puas tsuaj rau lub cev pob txha aramid los ntawm lub teeb UV.
4. Kev tiv thaiv hluav taws xob
Qhov kev tiv thaiv hluav taws xob ntawm cov aramids interposition zoo heev. Piv txwv li, nyob rau hauv 1.72x108rad/s ntawm r-radiation, lub zog tseem ruaj khov.
5. Kev ruaj khov
Tom qab ntxuav 100 zaug, lub zog rhuav ntawm cov ntaub m-aramid tseem tuaj yeem ncav cuag ntau dua 85% ntawm lawv lub zog qub. Qhov kub tsis kam ntawm para-aramids siab dua li ntawm inter-aramids, nrog rau kev siv kub tas mus li ntawm -196 ° C txog 204 ° C thiab tsis muaj kev lwj lossis yaj ntawm 560 ° C. Qhov tseem ceeb tshaj plaws ntawm para-aramid yog nws lub zog siab thiab modulus siab, nws lub zog ntau dua 25g / dan, uas yog 5 ~ 6 zaug ntawm cov hlau zoo, 3 zaug ntawm cov iav fiber thiab 2 zaug ntawm cov xov nylon muaj zog siab; nws modulus yog 2 ~ 3 zaug ntawm cov hlau zoo lossis iav fiber thiab 10 zaug ntawm cov xov nylon muaj zog siab. Cov qauv nto tshwj xeeb ntawm cov pulp aramid, uas tau txais los ntawm kev sib xyaw ntawm cov fiber aramid, txhim kho qhov tuav ntawm cov khoom sib xyaw thiab yog li ntawd zoo tagnrho ua cov fiber txhawb rau kev sib txhuam thiab cov khoom sib khi. Aramid Pulp Hexagonal Special Fibre I Aramid 1414 Pulp, daj daj flocculent, plush, muaj ntau plumes, muaj zog, ruaj khov zoo, tsis brittle, kub siab, corrosion resistant, tawv, tsis shrinkage, zoo abrasion tsis kam, thaj chaw loj, sib txuas zoo nrog lwm cov ntaub ntawv, cov khoom siv reinforcing nrog cov dej noo rov qab ntawm 8%, qhov ntev nruab nrab ntawm 2-2.5 hli thiab thaj chaw ntawm 8m2 / g. Nws yog siv ua cov khoom siv gasket reinforcement nrog kev ua tau zoo thiab kev ua haujlwm sealing, thiab tsis ua teeb meem rau tib neeg kev noj qab haus huv thiab ib puag ncig, thiab tuaj yeem siv rau kev kaw hauv dej, roj, txawv txawv thiab nruab nrab lub zog acid thiab alkali media. Nws tau ua pov thawj tias lub zog ntawm cov khoom yog sib npaug rau 50-60% ntawm cov khoom siv asbestos fiber reinforced thaum tsawg dua 10% ntawm cov slurry ntxiv. Nws yog siv los txhawb kev sib txhuam thiab cov ntaub ntawv sealing thiab lwm yam khoom tsim, thiab tuaj yeem siv ua lwm txoj hauv kev rau asbestos rau kev sib txhuam sealing cov ntaub ntawv, kev ua haujlwm siab kub rwb thaiv tsev ntawv thiab cov ntaub ntawv sib xyaw ua ke.
Lub sijhawm tshaj tawm: Lub Yim Hli-01-2022