1.Definition ntawm aramid fibers
Aramid fiber yog lub npe sib sau ua ke rau aromatic polyamide fibers.
2.Classification ntawm aramid fibers
Aramid fiber ntau raws li cov qauv molecular yuav muab faib ua peb hom: para-aromatic polyamide fiber, inter-aromatic polyamide fiber, aromatic polyamide copolymer fiber. Ntawm lawv, para-aromatic polyamide fibers tau muab faib ua poly-phenylamide (poly-p-aminobenzoyl) fibers, poly-benzenedicarboxamide terephthalamide fibers, inter-txoj hauj lwm benzodicarbonyl terephthalamide fibers muab faib ua poly-m-tolyl terephthalamide fibers, Nm-tolyl-bis-(isobenzamide) terephthalamide fibers.
3.Cov yam ntxwv ntawm aramid fibers
1. Zoo mechanical zog
Interposition aramid yog ib qho yooj yim polymer, tawg lub zog siab dua li cov polyester zoo tib yam, paj rwb, nylon, thiab lwm yam., elongation yog loj, mos rau qhov kov, zoo spinnability, tuaj yeem ua rau sib txawv slenderness, ntev ntawm cov fibers luv luv thiab filaments, feem ntau textile. machinery ua los ntawm cov xov paj sib txawv suav woven rau hauv fabrics, non-woven fabrics, tom qab ua tiav, kom tau raws li qhov yuav tsum tau ntawm ntau qhov chaw ntawm kev tiv thaiv khaub ncaws.
2. Cov nplaim hluav taws zoo heev thiab kub ua haujlwm
Qhov limiting oxygen Performance index (LOI) ntawm m-aramid yog 28, yog li nws tsis txuas ntxiv hlawv thaum nws tawm ntawm cov nplaim taws. Cov nplaim hluav taws kub hnyiab ntawm m-aramid yog txiav txim siab los ntawm nws tus kheej cov qauv tshuaj, ua rau nws muaj cov nplaim hluav taws kub hnyiab uas tsis ua kom puas los yog poob nws cov nplaim hluav taws xob nrog lub sij hawm lossis ntxuav. Lub m-aramid yog thermally ruaj khov thiab tuaj yeem siv tsis tu ncua ntawm 205 ° C thiab tuav lub zog siab ntawm qhov kub siab tshaj 205 ° C. Lub m-aramid muaj qhov kub thiab txias decomposition thiab tsis yaj los yog poob ntawm qhov kub thiab txias, tab sis tsuas yog pib char ntawm qhov kub siab tshaj 370 ° C.
3. Cov khoom siv tshuaj ruaj khov
Ntxiv nrog rau cov kua qaub thiab cov hauv paus muaj zog, aramid zoo li tsis cuam tshuam los ntawm cov kuab tshuaj organic thiab roj. Lub zog ntub ntawm aramid yuav luag sib npaug ntawm lub zog qhuav. Kev ruaj ntseg ntawm cov dej saturated vapor yog zoo dua li ntawm lwm cov organic fibers.
Aramid kuj tseem rhiab heev rau UV teeb. Yog tias raug rau lub hnub ntev, nws poob ntau lub zog thiab yog li yuav tsum tau tiv thaiv nrog cov txheej txheem tiv thaiv. Cov txheej tiv thaiv no yuav tsum tuaj yeem thaiv qhov kev puas tsuaj rau lub pob txha aramid los ntawm UV teeb.
4. Kev tiv thaiv hluav taws xob
Cov hluav taws xob tiv thaiv ntawm interposition aramids yog qhov zoo heev. Piv txwv li, nyob rau hauv 1.72x108rad / s ntawm r-radiation, lub zog tseem nyob tas li.
5. Durability
Tom qab 100 ntxuav, lub zog tsim kua muag ntawm m-aramid fabrics tseem tuaj yeem ncav cuag ntau dua 85% ntawm lawv lub zog qub. Qhov kub tsis kam ntawm para-aramids yog siab dua li ntawm inter-aramids, nrog rau kev siv tas li ntawm -196 ° C txog 204 ° C thiab tsis muaj decomposition lossis melting ntawm 560 ° C. Cov yam ntxwv tseem ceeb tshaj plaws ntawm para-aramid yog nws lub zog siab thiab siab modulus, nws lub zog yog ntau tshaj 25g / dan, uas yog 5 ~ 6 npaug ntawm cov hlau zoo, 3 zaug ntawm iav fiber ntau thiab 2 zaug ntawm lub zog siab nylon muaj xov paj. ; nws cov modulus yog 2 ~ 3 zaug ntawm cov hlau zoo lossis iav fiber ntau thiab 10 npaug ntawm lub zog siab nylon muaj xov paj. Qhov tshwj xeeb nto qauv ntawm aramid pulp, uas yog tau los ntawm nto fibrillation ntawm aramid fibers, zoo heev txhim kho tuav ntawm lub compound thiab yog li zoo tagnrho raws li ib tug reinforcing fiber rau kev sib txhuam thiab sealing khoom. Aramid Pulp Hexagonal Tshwj Xeeb Fiber I Aramid 1414 Pulp, lub teeb daj daj flocculent, plush, nrog ntau cov plumes, siab zog, zoo dimension stability, tsis-nkig, kub resistant, corrosion resistant, tawv, tsis tshua muaj shrinkage, zoo abrasion kuj, loj cheeb tsam. , kev sib raug zoo nrog lwm cov ntaub ntawv, cov khoom siv ntxiv nrog cov dej noo rov qab los ntawm 8%, qhov nruab nrab ntev ntawm 2-2.5mm thiab thaj tsam ntawm 8m2 / g. Nws yog siv los ua cov khoom siv gasket nrog kev ua haujlwm zoo thiab kev sib khi, thiab tsis muaj teeb meem rau tib neeg kev noj qab haus huv thiab ib puag ncig, thiab tuaj yeem siv rau sealing hauv dej, roj, coj txawv txawv thiab nruab nrab lub zog acid thiab alkali media. Nws tau raug pov thawj tias lub zog ntawm cov khoom yog sib npaug rau 50-60% ntawm asbestos fiber reinforced khoom thaum tsawg dua 10% ntawm cov slurry ntxiv. Nws yog siv los txhawb kev sib txhuam thiab kev sib khi cov ntaub ntawv thiab lwm yam khoom tsim, thiab tuaj yeem siv los ua lwm txoj hauv kev asbestos rau kev sib txhuam sealing cov ntaub ntawv, kev ua haujlwm siab kub resistant rwb thaiv tsev ntawv thiab cov ntaub ntawv muaj zog.
Post lub sij hawm: Aug-01-2022