1. Te whakamāramatanga o ngā muka aramid
Ko te muka aramid te ingoa whānui mō ngā muka polyamide kakara.
2. Te whakarōpūtanga o ngā muka aramid
E ai ki te hanganga ngota, ka taea te wehewehe i ngā muka aramid ki ngā momo e toru: te muka polyamide para-aromatic, te muka polyamide inter-aromatic, me te muka polyamide copolymer kakara. I roto i ēnei, ka wehea ngā muka polyamide para-aromatic ki ngā muka poly-phenylamide (poly-p-aminobenzoyl), ngā muka poly-benzenedicarboxamide terephthalamide, me ngā muka benzodicarbonyl terephthalamide inter-position ki ngā muka poly-m-tolyl terephthalamide, me ngā muka poly-N,Nm-tolyl-bis-(isobenzamide) terephthalamide.
3. Ngā āhuatanga o ngā muka aramid
1. Ngā āhuatanga miihini pai
Ko te aramid whakapūmau he pūhui ngāwari, he kaha ake te pakaru i te polyester noa, te miro, te nairona, me ētahi atu, he nui ake te roa, he ngawari ki te pā, he pai te hurihuri, ka taea te whakaputa ki ngā momo kikokore, te roa o ngā muka poto me ngā miro, i te nuinga o te wā ka hangaia he mīhini kakahu mai i ngā momo miro rerekē e whatua ana ki roto i ngā papanga, ngā papanga kore-whatu, i muri i te whakaoti, kia tutuki ai ngā whakaritenga o ngā momo wāhanga rerekē o ngā kākahu tiaki.
2. He ātete mura me te wera pai rawa atu
Ko te taupū hāora whakawhāiti (LOI) o te m-aramid he 28, nō reira kāore e mura tonu ina wehe atu i te mura. Ko ngā āhuatanga ātete mura o te m-aramid ka whakatauhia e tōna ake hanganga matū, ka waiho hei muka ātete mura tuturu e kore e pirau, e ngaro rānei ōna āhuatanga ātete mura i te wā, i te horoinga rānei. He pumau te m-aramid ki te wera, ā, ka taea te whakamahi tonu i te 205°C, ā, ka mau tonu tōna kaha i ngā pāmahana neke atu i te 205°C. He teitei te pāmahana pirau o te m-aramid, ā, kāore e rewa, e maturuturu rānei i ngā pāmahana teitei, engari ka tīmata noa te mura i ngā pāmahana neke atu i te 370°C.
3. Ngā āhuatanga matū pumau
Haunga ngā waikawa me ngā kawa kaha, kāore te aramid e pāngia e ngā whakarewa me ngā hinu waro. Tata rite te kaha mākū o te aramid ki te kaha maroke. He pai ake te pumau o te kohu wai mākū i ērā atu muka waro.
He tino pāngia te aramid e te mārama UV. Mēnā ka roa te wā e pāngia ana e te rā, ka ngaro tōna kaha, nō reira me tiaki ki tētahi paparanga tiaki. Me āhei tēnei paparanga tiaki ki te ārai i te kino o te angaanga aramid mai i te mārama UV.
4. Ātete i te irahiko
He tino pai te ātete irahiko o ngā aramid i waenganui i ngā tūnga. Hei tauira, i raro i te 1.72x108rad/s o te r-radiation, ka mau tonu te kaha.
5. Te pakari
I muri i te 100 horoinga, ka taea tonu e te kaha haehae o ngā papanga m-aramid te eke ki te neke atu i te 85% o tōna kaha taketake. He teitei ake te ātete pāmahana o ngā para-aramid i ērā o ngā inter-aramid, me te awhe pāmahana whakamahi tonu mai i te -196°C ki te 204°C, ā, kāore he pirau, he rewa rānei i te 560°C. Ko te āhuatanga tino nui o te para-aramid ko tōna kaha teitei me te modulus teitei, ko tōna kaha he nui ake i te 25g/dan, arā, he 5~6 ngā wā o te maitai kounga teitei, he 3 ngā wā o te muka karāhe me te 2 ngā wā o te miro ahumahi nairona kaha teitei; ko tōna modulus he 2~3 ngā wā o te maitai kounga teitei, o te muka karāhe rānei me te 10 ngā wā o te miro ahumahi nairona kaha teitei. Ko te hanganga mata ahurei o te penupenu aramid, e whiwhihia ana mā te fibrillation mata o ngā muka aramid, ka tino whakapai ake i te pupuri o te matū, ā, he pai rawa atu hei muka whakapakari mō ngā hua waku me te hiri. Aramid Pulp Hexagonal Special Fibre I Aramid 1414 Pulp, he kōwhai mārama te matotoru, he mātotoru, he nui ngā huruhuru, he kaha teitei, he pai te pumau o ngā āhuatanga, kāore e pakarukaru, he ātete ki te pāmahana teitei, he ātete ki te waikura, he pakari, he iti te whakaheke, he pai te ātete ki te pakū, he whānui te mata, he pai te piri ki ētahi atu rauemi, he rauemi whakapakari me te hokinga mai o te makuku o te 8%, he roa toharite o te 2-2.5mm me te horahanga mata o te 8m2/g. E whakamahia ana hei rauemi whakapakari gasket me te pai o te manawanui me te mahi hiri, ā, kāore e kino ki te hauora tangata me te taiao, ā, ka taea te whakamahi mō te hiri i roto i te wai, te hinu, te waikawa me te kawakore kaha-waenga me te kaha-waenga. Kua whakamātauhia ko te kaha o te hua he rite ki te 50-60% o ngā hua whakapakari muka asbestos ina iti iho i te 10% o te paru e tāpirihia ana. E whakamahia ana hei whakapakari i ngā rauemi waku me te hiri me ētahi atu hua hanga, ā, ka taea te whakamahi hei whakakapi i te asbestos mō ngā rauemi hiri waku, te pepa whakamahana ātete wera mahi teitei me ngā rauemi hiato whakapakari.
Wā tuku: 01 o Ākuhata-2022