ʻO ka fiber aramid magic

Ua hānau ʻia ʻo Aramid fiber i ka hopena o 1960s.ʻAʻole i ʻike mua ʻia ma ke ʻano he mea no ka hoʻomohala ʻana o ke ao holoʻokoʻa a he mea hoʻolālā koʻikoʻi.Ma hope o ka pau ʻana o ke Kaua Cold, ua hoʻohana nui ʻia ka aramid fiber, ma ke ʻano he ʻenehana fiber kiʻekiʻe, i nā kīwila kīwila, a ua ʻike ʻia.ʻElua mau ʻano o nā fila aramid me ka waiwai kūpono loa: ʻo kekahi ka meta-aramid fiber me ka zigzag molecular chain hoʻonohonoho, i kapa ʻia ʻo aramid fiber 1313 ma Kina;ʻO kekahi he para-aramid fiber me ka linear molecular chain hoʻonohonoho, i kapa ʻia ʻo aramid fiber 1414 ma Kina.

I kēia manawa, he mea nui ka fiber aramid no ka pale aupuni a me ka ʻoihana koa.No ka hoʻokō ʻana i nā pono o ke kaua hou, ua hana ʻia nā pale pōkā o nā ʻāina i kūkulu ʻia e like me ʻAmelika Hui Pū ʻIa a me Beretania i hana ʻia me ka fiber aramid.Ua hoʻomaikaʻi maikaʻi ka māmā o nā kāʻei pale pale aramid a me nā mahiole i ka hiki ke pane wikiwiki a me ka lethality o ka pūʻali.I ke Kaua Kaiwa, ua hoʻohana nui ʻia nā mea hoʻohui aramid e nā mokulele ʻAmelika a me Farani.Ma waho aʻe o nā noi pūʻali koa, ua hoʻohana nui ʻia ʻo ia ma ke ʻano he ʻenehana fiber kiʻekiʻe i ka aerospace, electromechanical, kūkulu, nā kaʻa, nā waiwai haʻuki a me nā ʻano ʻē aʻe o ka hoʻokele waiwai aupuni.Ma ka mokulele a me ka aerospace, mālama ka fiber aramid i ka nui o ka wahie mana ma muli o kona kaumaha māmā a me ka ikaika kiʻekiʻe.Wahi a nā ʻikepili haole, ʻo kēlā me kēia kilokani o ka hoʻemi kaumaha i ka wā o ka hoʻomaka ʻana o nā mokulele mokulele, ʻo ia hoʻi ka hōʻemi ʻana o $1 miliona.Eia kekahi, ʻo ka hoʻomohala wikiwiki ʻana o ka ʻepekema a me ka ʻenehana e wehe ana i nā wahi kīwila hou no ka fiber aramid.Wahi a nā hōʻike, hoʻohana ʻia nā huahana aramid no nā pale pale pale a me nā mahiole, e helu ana ma kahi o 7-8%, a me nā mea aerospace a me nā mea haʻuki e pili ana i 40%.ʻO nā mea iwi iwi huila, nā mea kāʻei conveyor a me nā mea ʻē aʻe e pili ana i ka 20%, a ʻo nā kaula ikaika kiʻekiʻe ma kahi o 13%.Ua hoʻomaka pū ka ʻoihana kaʻa e hoʻohana i ke kaula aramid i nā mea nui e hōʻemi i ke kaumaha a me ke kūpaʻa ʻana.

ʻO Aramid, i kapa ʻia ʻo "polyphenylphthalamide" a i kapa ʻia ʻo Aramid fiber ma ka ʻōlelo Pelekania, he ʻano hou o ka fiber synthetic kiʻekiʻe, nona nā waiwai maikaʻi loa e like me ka ikaika ultra-kiʻekiʻe, modulus kiʻekiʻe, ke kūpaʻa wela kiʻekiʻe, ka waikawa a me ke kūpaʻa alkali, māmā kaumaha, insulation, lōʻihi ola pōʻaiapuni o ka elemakule kū'ē, etc. kona ikaika i oi aku mamua o 28g / denier, i mea 5-6 manawa o ke kila kila kiʻekiʻe, 2 manawa o ke kiʻekiʻe-ikaika nylon uea, 1.6 manawa ia. ʻo ka graphite ikaika kiʻekiʻe a me 3 manawa o ka fiber aniani.ʻO ka modulus he 2-3 mau manawa o ka uea kila a i ʻole ke aniani aniani, ʻo ka paʻakikī he 2 mau manawa o ka uea kila, a ʻo ke kaumaha ma kahi o 1/5 wale nō o ka uea kila.Kūleʻa wela kiʻekiʻe maikaʻi loa, ka mahana hoʻohana lōʻihi o 300 degere, pōkole ke kūpaʻa wela kiʻekiʻe o 586 degere.ʻO ka loaʻa ʻana o ka fiber aramid i manaʻo ʻia he hana koʻikoʻi koʻikoʻi ma ke kahua o nā mea.