Aramid yog ib qho hluavtaws fiber ntau paub txog nws lub zog-rau-qhov hnyav piv, kub tsis kam, thiab kav ntev. Ntawm no yog ib kauj ruam piav qhia ntawm yuav ua li cas aramid yog ua:
1. Kev xaiv cov khoom siv raw:
Aramid yog tsim los ntawm aromatic polyamides, uas yog polymers muab tau los ntawm cov organic tebchaw uas muaj ntxhiab rings. Cov ntaub ntawv tseem ceeb yog p-phenylenediamine (PPD) thiab terephthalic acid (TPA), uas yog sib xyaw ua ke los tsim cov polymer.
2. Txheej txheem Polymerization:
Cov khoom siv raw yog polymerized los ua cov saw ntev polyamide molecules. Cov txheej txheem no tuaj yeem yog kev daws teeb meem polymerization, qhov twg cov reactants yaj nyob rau hauv ib qho hnyav, los yog yaj polymerization, qhov twg cov reactants yaj thiab reacts ntawm qhov kub thiab txias.
3. Spinning rau hauv Fibers:
Lub resulting polymer yog ces spun rau hauv fiber. Qhov no tuaj yeem ua tiav los ntawm cov txheej txheem ntub dej, uas cov polymer yog yaj hauv cov kuab tshuaj thiab extruded los ntawm qhov me me rau hauv lub coagulation da dej, los yog cov txheej txheem qhuav spinning, nyob rau hauv uas cov polymer yog extruded rau hauv ib tug rhuab cua kwj los kho cov fiber. .
4. Kev kos duab thiab kev taw qhia:
Thawj spun fiber yog ces stretched los yog stretched kom cov polymer saw nyob rau hauv cov kev taw qhia ntawm fiber. Qhov kev taw qhia no ua rau kom muaj zog thiab nruj ntawm cov aromatic polyamide fibers.
5. Kev kho cua sov:
Cov fibers tau txais kev kho cua sov thiab tuaj yeem nqa tawm hauv qhov chaw tswj tau. Cov kauj ruam no ntxiv txhim kho qhov kev npaj molecular thiab crystallinity thiab txhim kho cov khoom siv ntawm fiber ntau.
6. Texturizing (Yeem):
Txhawm rau kom qhov ntim thiab softness ntawm fiber ntau, cov txheej txheem texturing tuaj yeem siv tau. Qhov no suav nrog kev kho cov fibers nrog cov cua sov thiab cov neeg kho tshuab quab yuam los tsim cov curly lossis textured tsos.
7. Kev ua tiav:
Cov fibers tom qab ntawd raug rau ntau yam kev kho mob los txhim kho lawv cov khoom thiab kev ua haujlwm. Qhov no tuaj yeem suav nrog lubrication, kho antistatic, los yog txheej los txhim kho cov khoom tshwj xeeb.
8. Kev Tswj Xyuas Zoo:
Los ntawm kev tsim cov txheej txheem kev tswj xyuas zoo yog ua los xyuas kom cov fibers ua tau raws li qhov xav tau tshwj xeeb rau lub zog, sib xws, thiab lwm yam khoom.
Cov txheej txheem ntau lawm ntawm aromatic polyamides yog complex, nrog rau kev xaiv ntawm cov ntaub ntawv raw, polymerization, spinning rau hauv fibers, stretching thiab orienting kom aligning polymer chains, kev kho cua sov kom crystallinity, xaiv texturing kom ntim, xov los txhim kho kev ua tau zoo, thiab nruj. kev tswj kom zoo. Qhov no ua rau muaj fiber ntau nrog lub zog tshwj xeeb, tiv thaiv tshav kub, thiab ua haujlwm ntev, ua rau nws haum rau ntau yam kev siv, los ntawm kev tiv thaiv ballistic mus rau cov ntaub ntawv ua haujlwm siab hauv kev lag luam xws li aerospace, tsheb, thiab electronics.Yog tias koj xav tau hauv qhov no. , thov hu rau kuv raws li cov ntaub ntawv tiv tauj hauv qab no.
