Magic aramid fiber

Aramid fiber idabadwa kumapeto kwa zaka za m'ma 1960.Poyamba sichinadziwike ngati chida chopangira chilengedwe komanso chinthu chofunikira kwambiri.Pambuyo pa Cold War, fiber ya aramid, monga zida zapamwamba kwambiri, idagwiritsidwa ntchito kwambiri m'maboma, ndipo pang'onopang'ono idadziwika.Pali mitundu iwiri ya ulusi wa aramid wokhala ndi mtengo wapatali kwambiri: imodzi ndi meta-aramid fiber yokhala ndi zigzag molecular chain chain, yomwe imatchedwa aramid fiber 1313 ku China;Imodzi ndi ulusi wa para-aramid wokhala ndi ma linear molecular chain makonzedwe, omwe amatchedwa aramid fiber 1414 ku China.

Pakalipano, aramid fiber ndi chinthu chofunikira kwambiri pachitetezo cha dziko komanso makampani ankhondo.Pofuna kukwaniritsa zosoŵa zankhondo zamakono, zovala zosaloŵerera zipolopolo za mayiko otukuka monga United States ndi Britain zimapangidwa ndi ulusi wa aramid.Zovala zopepuka za ma aramid bulletproof ndi zipewa zathandizira kuyankha mwachangu komanso kupha kwa asitikali.Mu Gulf War, zida za aramid zidagwiritsidwa ntchito kwambiri ndi ndege zaku America ndi France.Kuphatikiza pa ntchito zankhondo, zakhala zikugwiritsidwa ntchito kwambiri ngati zida zapamwamba zaukadaulo muzamlengalenga, ma electromechanical, zomangamanga, magalimoto, katundu wamasewera ndi zinthu zina zachuma zadziko.M'mlengalenga komanso mumlengalenga, fiber ya aramid imapulumutsa mafuta ambiri chifukwa cha kulemera kwake komanso mphamvu zake zambiri.Malingana ndi deta yakunja, kilogalamu iliyonse yochepetsera kulemera panthawi yotsegulira ndege imatanthauza kuchepetsa mtengo wa $ 1 miliyoni.Kuphatikiza apo, kupita patsogolo kofulumira kwa sayansi ndiukadaulo kukutsegulira malo atsopano a aramid fiber.Malinga ndi malipoti, zinthu za aramid zimagwiritsidwa ntchito ngati zovala zoteteza zipolopolo ndi zipewa, zomwe zimawerengera pafupifupi 7-8%, ndipo zida zam'mlengalenga ndi zida zamasewera zimakhala pafupifupi 40%.Zida za mafupa a matayala, lamba wonyamula katundu ndi zinthu zina zimakhala pafupifupi 20%, ndipo zingwe zolimba kwambiri zimakhala pafupifupi 13%.Makampani opanga matayala adayambanso kugwiritsa ntchito chingwe cha aramid mochulukira kuti achepetse kulemera komanso kukana kugudubuza.

Aramid, yomwe imadziwika bwino kuti "polyphenylphthalamide" ndipo imatchedwa Aramid fiber mu Chingerezi, ndi mtundu watsopano wazitsulo zamakono zamakono, zomwe zimakhala ndi zinthu zabwino kwambiri monga ultra-high mphamvu, high modulus, high heat resistance, acid ndi alkali resistance, kulemera kopepuka, kutchinjiriza, kusinthasintha kwa moyo wautali kukana kukalamba, ndi zina zambiri. Mphamvu yake ndi yayikulu kuposa 28g / denier, yomwe ndi nthawi 5-6 kuposa waya wapamwamba kwambiri wachitsulo, 2 nthawi ya waya wa nayiloni wamphamvu kwambiri, nthawi 1.6 yamphamvu kwambiri ya graphite ndi 3 kuwirikiza kwa ulusi wagalasi.Modulus ndi 2-3 nthawi ya waya wachitsulo kapena ulusi wagalasi, kulimba kwake ndi 2 kuwirikiza kwa waya wachitsulo, ndipo kulemera kwake ndi pafupifupi 1/5 ya waya wachitsulo.Kukana kwabwino kwambiri kutentha, kutentha kwa nthawi yayitali kwa madigiri 300, kukana kutentha kwanthawi yayitali kwa madigiri 586.Kupezeka kwa ulusi wa aramid kumawonedwa ngati njira yofunikira kwambiri m'mbiri yazinthu.