1. Incazelo yemicu ye-aramid
I-Aramid fibre yigama elihlanganisiwe le-aromatic polyamide fibres.
2. Ukuhlukaniswa kwemicu ye-aramid
I-Aramid fiber ngokwesakhiwo sama-molecule ingahlukaniswa ngezinhlobo ezintathu: i-para-aromatic polyamide fiber, i-inter-aromatic polyamide fiber, i-aromatic polyamide copolymer fiber. Phakathi kwazo, i-para-aromatic polyamide fibers ihlukaniswe nge-poly-phenylamide (poly-p-aminobenzoyl), i-poly-benzenedicarboxamide terephthalamide fibers, i-inter-position benzodicarbonyl terephthalamide fibers ihlukaniswe nge-poly-m-tolyl terephthalamide fibers, i-poly-N,Nm-tolyl-bis-(isobenzamide) terephthalamide fibers.
3. Izici zemicu ye-aramid
1. Izakhiwo ezinhle zemishini
I-Interposition aramid iyi-polymer eguquguqukayo, amandla aphukayo aphezulu kune-polyester evamile, ukotini, inayiloni, njll., ukunwebeka kukhulu, kuthambile uma kuthintwa, kugoba kahle, kungakhiqizwa kube nokuncane okuhlukile, ubude bemicu emifushane kanye nezintambo, ngokuvamile imishini yendwangu eyenziwe ngenani elihlukene lentambo elukiwe ibe yizindwangu, izindwangu ezingezona ezilukiwe, ngemva kokuqeda, ukuhlangabezana nezidingo zezindawo ezahlukene zezingubo zokuzivikela.
2. Ukumelana okuhle kakhulu kwelangabi nokushisa
Inkomba yomkhawulo we-oxygen (LOI) ye-m-aramid ingu-28, ngakho ayiqhubeki ivutha lapho ishiya ilangabi. Izakhiwo zokuvimbela ilangabi ze-m-aramid zinqunywa yisakhiwo sayo samakhemikhali, okwenza kube yi-fibre evimbela ilangabi unomphela engabhubhisi noma ilahlekelwe yizakhiwo zayo zokuvimbela ilangabi ngesikhathi noma ngesikhathi sokuwasha. I-m-aramid izinzile ngokwezinga lokushisa futhi ingasetshenziswa njalo ku-205°C futhi igcina amandla aphezulu emazingeni okushisa angaphezu kuka-205°C. I-m-aramid inokushisa okuphezulu kokubola futhi ayincibiliki noma iconse emazingeni okushisa aphezulu, kodwa iqala ukusha kuphela emazingeni okushisa angaphezu kuka-370°C.
3. Izakhiwo zamakhemikhali ezizinzile
Ngaphezu kwama-asidi nezisekelo eziqinile, i-aramid ayithinteki nhlobo yizinyibilikisi namafutha e-organic. Amandla amanzi e-aramid acishe alingane namandla omile. Ukuqina komhwamuko wamanzi ogcwele kungcono kunokweminye imicu ye-organic.
I-Aramid iyazwela kakhulu ekukhanyeni kwe-UV. Uma ivezwa elangeni isikhathi eside, ilahlekelwa amandla amaningi ngakho-ke kufanele ivikelwe ngesendlalelo esivikelayo. Le sendlalelo esivikelayo kumele sikwazi ukuvimba umonakalo owenzeka emathanjeni e-aramid ekukhanyeni kwe-UV.
4. Ukumelana nemisebe
Ukumelana nemisebe ye-interposition aramids kuhle kakhulu. Isibonelo, ngaphansi kwe-1.72x108rad/s ye-r-radiation, amandla ahlala engaguquki.
5. Ukuqina
Ngemva kokuwashwa izikhathi eziyi-100, amandla okudabuka kwezindwangu ze-m-aramid angasafinyelela ngaphezu kuka-85% wamandla azo okuqala. Ukumelana nokushisa kwama-para-aramid kuphakeme kunokwe-inter-aramids, ngebanga lokushisa elisetshenziswa njalo elisukela ku--196°C kuya ku-204°C futhi akukho ukubola noma ukuncibilika ku-560°C. Isici esibaluleke kakhulu se-para-aramid amandla ayo aphezulu kanye ne-modulus ephezulu, amandla ayo angaphezu kuka-25g/dan, okuyi-5~6 yensimbi yekhwalithi ephezulu, izikhathi ezintathu ze-fiber yengilazi kanye ne-2~2 yentambo yezimboni ye-nylon enamandla aphezulu; i-modulus yayo iyi-2~3 yensimbi yekhwalithi ephezulu noma i-fiber yengilazi kanye ne-10 yentambo yezimboni ye-nylon enamandla aphezulu. Isakhiwo esiyingqayizivele sobuso be-aramid pulp, esitholakala ngokufibrillation kobuso bezintambo ze-aramid, sithuthukisa kakhulu ukubamba kwenhlanganisela futhi ngenxa yalokho silungele njenge-fibre yokuqinisa imikhiqizo yokungqubuzana nokuvala. I-Aramid Pulp I-Hexagonal Special Fibre I I-Aramid 1414 I-Pulp, i-flocculent ephuzi okukhanyayo, ithambile, inama-plume amaningi, amandla aphezulu, ukuzinza okuhle kobukhulu, okungaqhekeki, okumelana nokushisa okuphezulu, okumelana nokugqwala, okunzima, ukushwabana okuphansi, ukumelana okuhle kokuguguleka, indawo enkulu, ukubopha okuhle nezinye izinto, izinto eziqinisayo ezinokubuyiselwa komswakama okungu-8%, ubude obumaphakathi obungu-2-2.5mm kanye nendawo engaphezulu engu-8m2/g. Isetshenziswa njengento yokuqinisa i-gasket enokuqina okuhle nokusebenza kahle kokuvala, futhi ayilimazi impilo yabantu kanye nemvelo, futhi ingasetshenziswa ukuvala emanzini, uwoyela, amandla angavamile naphakathi ne-acid kanye ne-alkali media. Kuye kwafakazelwa ukuthi amandla omkhiqizo alingana no-50-60% wemikhiqizo eqiniswe ngefayibha ye-asbestos lapho kungeziwe ngaphansi kuka-10% we-slurry. Isetshenziselwa ukuqinisa izinto zokungqubuzana nokuvala kanye neminye imikhiqizo eyenziwe, futhi ingasetshenziswa njengenye indlela esikhundleni se-asbestos yezinto zokuvala ukungqubuzana, iphepha lokuvikela elimelana nokushisa eliphezulu kanye nezinto ezihlanganisiwe eziqinisiwe.
Isikhathi sokuthunyelwe: Agasti-01-2022