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Njira yopangira ma aramid
Pepala la Aramid nthawi zambiri limakonzedwa posakaniza ulusi wa aramid wowotchera ndi ulusi wachifupi wa aramid wopangira ma sheet.
Mwachindunji, mwachitsanzo, njira zotsatirazi zitha kugwiritsidwa ntchito: mutatha kusakanikirana kowuma kwa ulusi womwe tatchulawa wa aramid ndi ulusi waufupi wa aramid, ulusi wamtundu wa aramid ndi ulusi wamfupi wa aramid umamwazikana ndikusakanikirana ndi madzi amadzimadzi pogwiritsa ntchito njira yotuluka mpweya, ndiyeno. kutulutsidwa pamadzi othandizira othandizira (monga mauna kapena lamba) kuti apange pepala, ndipo njira yochotsera madzi ndi kuyanika ndiyokondedwa. Zomwe zimatchedwa njira yonyowa yopangira madzi, yomwe imagwiritsa ntchito madzi ngati sing'anga, ndiyo yabwino.
Njira yopangira pepala la aramid
Njira yopangira ma aramid fibers:
Polymerization: Mu gawo loyamba, ulusi wa aramid umapota kuti ukhale wandiweyani, wosalala bwino wa polima ufa. Nkhaniyi ili ndi matenthedwe akuluakulu ndi mankhwala a para aramid fibers. Komabe, ilibe mphamvu zolimbitsa ulusi kapena zamkati. Ufa wabwino uwu ungagwiritsidwe ntchito kupititsa patsogolo zinthu zamagulu apulasitiki.
Kupota: Mu gawo lachiwiri la ulusi wa aramid, polima amasungunuka mu sulfuric acid kuti apange madzi a crystal solution. Pambuyo pake, yankholo linakulungidwa mu ulusi wabwino, uliwonse uli ndi mainchesi a 12 μ M. Mapangidwe a silika ndi 100% subcrystalline, ndi unyolo wa maselo ofanana ndi fiber axis. Izi mkulu chizolowezi kugawa amapereka Twaron filament makhalidwe abwino kwambiri.
Ulusi Waufupi: Ulusi waufupi wochita kupanga kapena ulusi wodulidwa waufupi, womwe umakonzedwa ndi kukwinya ulusiwo kenako nkuwathira ndi mankhwala omaliza. Mukaumitsa, dulani ulusiwo mu utali womwe mukufuna ndikuupaka.
Kupota ulusi: Kuti apange zamkati, ulusi wa aramid umadula ulusiwo kenako ndikuuyimitsa m'madzi kuti uchiritse fibrosis. Kenako amapakidwa molunjika ndikugulitsidwa ngati zamkati zonyowa, kapena kuthiridwa madzi ndikuwumitsa ngati zamkati zouma zogulitsa.