Meta-aramid yog cov polymer hloov pauv tau uas muaj qhov ua haujlwm hnyav dua li polyester, paj rwb, nylon, thiab lwm yam. Thiab filament.
B. Nplaim-retardant thiab kub-resistant kev kawm
Qhov txwv cov pa oxygen ntsuas (LOI) ntawm meta-aramid ntau dua 28, yog li nws yuav tsis hlawv ntxiv thaum tawm hauv nplaim taws. Cov nplaim hluav taws kub ntawm cov hluav taws xob meta-aramid tau txiav txim siab los ntawm nws tus kheej cov qauv siv tshuaj, ua rau nws muaj cov nplaim hluav taws kub ruaj khov, uas yuav tsis txo lossis poob vim hnav thiab ntxuav lub sijhawm. Qhov tshwj xeeb tshaj plaws ntawm meta-aramid yog nws qhov kub zoo tiv taus. Nws tuaj yeem siv tau ntev ntawm 220 ° C yam tsis muaj hnub nyoog. Nws cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob tuaj yeem khaws cia tau 10 xyoo, thiab nws qhov kev ruaj ntseg zoo heev, ib puag ncig 250 ° C. Cov cua sov txo qis tsuas yog 1%, thiab nws yuav tsis ntsws, khov, muag muag lossis yaj ntawm 300 ° C rau lub sijhawm luv luv hauv qhov kub. Nws pib decompose thiab carbonize nyob ib puag ncig 400 ° C. Thaum qhov kub siab tshaj 370 ℃, cov cua sov ruaj khov yog qhov tshwj xeeb ntawm niaj hnub no' cov organic fiber ntau.
C. Cov tshuaj lom neeg ruaj khov
Meta-aramid fiber muaj cov tshuaj tiv thaiv zoo rau feem ntau ntawm cov tshuaj, thiab tuaj yeem tiv taus xeb, hydrolysis thiab chav xeb ntawm feem ntau cov ntsiab lus siab inorganic acids thiab lwm yam tshuaj lom neeg. Nws muaj qhov ua tau zoo alkali ntawm chav sov.
D. Kev tiv thaiv hluav taws xob
Kev tiv thaiv hluav taws xob ntawm meta-aramid zoo heev. Piv txwv li, nyob rau lub sij hawm ntev irradiation ntawm 1.2 × 10-2w/in2 ultraviolet rays thiab 1.72 × 108rads gamma rays, lawv qhov kev siv tseem tsis hloov pauv.
E. Kev tiv thaiv hluav taws xob zoo heev. Lub dielectric tsis tu ncua ntawm meta-aramid yog qhov tsawg heev, thiab nws qhov muaj peev xwm dielectric muaj peev xwm tso cai rau nws tswj hwm cov hluav taws xob rwb thaiv tsev zoo nyob rau hauv siab, qis thiab siab av. Rwb thaiv tsev ntawv npaj nrog nws. Qhov tawg qhov hluav taws xob tuaj yeem ncav cuag 100,000 volts. /hli, lees paub tias yog cov khoom siv rwb thaiv tsev zoo tshaj hauv ntiaj teb.
F. Ua tau ntev
Cov tshuaj lom neeg ua haujlwm tau zoo thiab kev sib txhuam ua haujlwm ntawm meta-aramid, tom qab 100
Tom qab ntxuav, qhov tsim kua muag ntawm meta-aramid npuag tseem tuaj yeem ncav cuag ntau dua 85% ntawm lub zog qub.
G. Qhov kub tsis kam ntawm para-aramid siab dua li ntawm meta-aramid. Kev siv qhov ntsuas kub tas mus li yog -196 ℃ ～ 204 ℃, thiab yuav tsis decompose lossis yaj ntawm qhov kub siab ntawm 560 ℃. Qhov tseem ceeb tshaj plaws ntawm para-aramid yog nws lub zog siab thiab cov qauv siab. Nws lub zog muaj ntau dua 25g/d, uas yog 5-6 npaug ntawm cov hlau zoo, 3 zaug ntawm iav fiber, thiab 2 zaug ntawm iav fiber. Heavy-duty nylon industrial xov; modulus yog 2 txog 3 zaug ntawm qib hlau lossis iav fiber ntau, thiab 10 npaug ntawm cov khoom siv muaj zog muaj zog nylon xov.
