Kev siv cov ntaub aramid fiber hauv cov khoom tiv thaiv mos txwv

Cov fiber aramidyog ib qho fiber ntau ua los ntawm cov khoom siv hluavtaws, muaj zog heev, modulus siab, tiv taus kub siab, tiv taus kua qaub thiab alkali, tsis hnyav, thiab lwm yam zoo heev. Nws lub zog tuaj yeem txog li 5-6 npaug ntawm cov hlau hlau, modulus yog 2-3 npaug ntawm cov hlau hlau lossis iav fiber, tawv yog 2 npaug ntawm cov hlau hlau, thiab qhov hnyav tsuas yog 1/5 ntawm cov hlau hlau. Thaum kub siab ntawm 560 ℃, cov fiber aramid tuaj yeem ruaj khov, tsis lwj, thiab tsis yaj. Tsis tas li ntawd, nws muaj cov khoom rwb thaiv tsev zoo thiab tiv thaiv kev laus, thiab lub neej ua haujlwm ntev. Tam sim no, cov khoom siv tiv thaiv mos txwv (xws li cov tsho tiv thaiv mos txwv, thiab cov kaus mom tiv thaiv mos txwv) feem ntau sivcov ntaub aramid fiberNtawm lawv, cov ntaub aramid fiber uas tsis muaj zog heev yog ib qho ntawm cov ntaub ntawv tseem ceeb hauv kev tiv thaiv mos txwv. Piv nrog cov tsho nylon ib txwm muaj thiab cov kaus mom hlau, cov tsho tiv thaiv mos txwv thiab cov kaus mom hlau nrog cov fiber aramid ntxiv tsis yog tsuas yog me dua thiab sib dua xwb tab sis kuj muaj txiaj ntsig zoo dua 40% tiv thaiv mos txwv.

Lub hauv paus ntsiab lus ua haujlwm ntawm cov tsho tiv thaiv mos txwv tuaj yeem nkag siab li no: thaum lub mos txwv ntaus cov ntaub ntawm lub tsho tiv thaiv, cov nthwv dej poob siab thiab lub zog raug tsim nyob ib puag ncig qhov chaw cuam tshuam. Cov nthwv dej no los ntawm kev nthuav dav thiab kev sib kis ntawm cov fiber sai sai, tuaj yeem thauj mus rau hauv ntau cov fibers, thiab tom qab ntawd nqus lub zog ntawm cov nthwv dej poob siab hauv thaj chaw loj. Nws yog qhov kev nqus hluav taws xob dav dav no uas ua rau txo qhov cuam tshuam ntawm cov mos txwv rau tib neeg lub cev, yog li ua tiav cov txiaj ntsig tiv thaiv ntawm cov tsho tiv thaiv mos txwv.

Cov khoom siv tiv taus mos txwv thiab nws cov kev ua tau zoo heev

Lub hauv paus ntawm cov tsho tiv thaiv mos txwv yog cov khoom siv fiber ntau uas lawv siv, uas cov fibers para-aramid, tseem hu ua para-aromatic polyamide fibers, yog cov khoom siv tiv thaiv mos txwv uas tau hwm heev. Nws cov qauv tshuaj lom neeg sib npaug zoo ua rau cov saw hlau molecular rigidity zoo heev, ua rau nws txawv ntawm cov polymers saw hlau yooj ywm ib txwm muaj hauv cov nqe lus ntawm solubility, rheological zog, thiab kev ua tiav.

Cov fiber Para-aramid paub txog lawv cov khoom siv lub cev thiab cov khoom siv kho tshuab zoo heev, suav nrog lub zog siab heev, modulus siab, thiab lub teeb yuag. Lawv lub zog tshwj xeeb yog tsib txog rau npaug ntau dua li cov hlau ib txwm muaj, thiab lawv cov modulus tshwj xeeb ntau dua li cov hlau los ntawm ob mus rau peb. Tsis tas li ntawd, cov fibers qhia txog cov khoom siv thermal zoo heev, nrog rau kev tiv taus kub siab, kev nthuav dav tsawg, thiab kev ua haujlwm thermal qis, thiab tsis hlawv lossis yaj. Cov fiber Para-aramid kuj paub tias yog "cov fibers tsis muaj phom" vim lawv cov rwb thaiv tsev zoo, kev tiv taus corrosion, thiab kev tiv taus kev laus.

Cov Ntawv Thov thiab Lub Zeem Muag ntawm Para-Aramid Fiber

Cov khoom siv para-aramid, yog ib yam khoom tseem ceeb hauv kev tiv thaiv thiab kev lag luam tub rog, tau siv dav thoob ntiaj teb. Raws li cov ntaub ntawv txheeb cais, feem pua ​​ntawm aramid hauv cov khoom siv tiv thaiv hauv Tebchaws Meskas yog ntau dua 50% thiab 10% hauv Nyiv. Nws cov yam ntxwv sib dua ua rau cov tsho tiv thaiv mos txwv thiab cov kaus mom hlau aramid, uas tuaj yeem txhim kho cov tub rog lub peev xwm teb sai. Tsis tas li ntawd, para-aramid tau siv dav hauv tsheb, kev sib txuas lus, aerospace, thiab kev ua si sab nraum zoov vim nws qhov kev ua tau zoo heev.