1. Ibisobanuro by'imigozi ya aramide
Fibre ya Aramid ni izina rusange ry'iminyururu ya polyamide ihumura neza.
2. Gushyira mu byiciro fibre za aramide
Fibre ya Aramid hakurikijwe imiterere ya molekile ishobora kugabanywamo ubwoko butatu: fibre ya para-aromatic polyamide, fibre ya inter-aromatic polyamide, fibre ya polyamide copolymer ihumura. Muri zo, fibre ya para-aromatic polyamide igabanywamo fibre ya poly-phenylamide (poly-p-aminobenzoyl), fibre ya poly-benzenedicarboxamide terephthalamide, fibre ya benzodicarbonyl terephthalamide igabanywamo fibre ya poly-m-tolyl terephthalamide, fibre ya poly-N,Nm-tolyl-bis-(isobenzamide) terephthalamide.
3. Ibiranga fibre za aramide
1. Imiterere myiza ya mekanike
Interposition aramid ni polymeri yoroshye, ifite imbaraga zirenze polyester isanzwe, ipamba, nayiloni, nibindi, uburebure bwayo ni bunini, yoroshye kuyikoraho, irazunguruka neza, ishobora gukorwa mu buryo butandukanye, uburebure bw'imigozi migufi n'udupira, muri rusange imashini zikoze mu budodo butandukanye ziboshye mu myenda, imyenda idafunze, nyuma yo kurangiza, kugira ngo ihuze n'ibisabwa by'ahantu hatandukanye ho kwambara imyenda.
2. Ubudahangarwa bwiza bw'umuriro n'ubushyuhe
Igipimo cya ogisijeni (LOI) cya m-aramide ni 28, bityo ntikomeza gushya iyo ivuye mu muriro. Imiterere y'umucanga wa m-aramide iterwa n'imiterere yayo bwite, bigatuma iba fibre ihora igabanya umuriro idatakaza cyangwa ngo itakaze imiterere yayo igabanya umuriro uko igihe kigenda cyangwa ikaraba. M-aramide irahindagurika mu bushyuhe kandi ishobora gukoreshwa buri gihe kuri 205°C kandi igakomeza kugira imbaraga nyinshi ku bushyuhe burenze 205°C. M-aramide ifite ubushyuhe bwinshi bwo kubora kandi ntishonga cyangwa ngo itose ku bushyuhe bwinshi, ahubwo itangira gushyuha gusa ku bushyuhe burenze 370°C.
3. Imiterere ihamye y'ibinyabutabire
Uretse aside n'ibice bikomeye, aramide ntabwo igerwaho n'ibintu bishongesha umubiri n'amavuta. Ingufu z'amazi zitose za aramide zigera hafi kungana n'ingufu z'umukungugu. Ingufu z'amazi yuzuye ziruta iz'izindi fibre z'umwimerere.
Aramid ikunda kwitabwaho n'urumuri rwa UV. Iyo ishyizwe ku zuba igihe kirekire, itakaza imbaraga nyinshi bityo ikaba igomba kurindwa n'urumuri rwa UV. Uru rumuri rwa UV rugomba kuba rushobora gukumira kwangirika kw'amagufwa ya aramid.
4. Ubudahangarwa bw'imirasire
Ubudahangarwa bw'imirasire ya aramids zo mu gice cy'imirasire ni bwiza cyane. Urugero, munsi ya 1.72x108rad/s ya r-radiation, imbaraga zigumaho.
5. Kuramba
Nyuma yo kozwa inshuro 100, imbaraga zo gucika kw'imyenda ya m-aramid zishobora kugera ku kigero kirenga 85% by'imbaraga zayo z'umwimerere. Ubushyuhe bwa para-aramid buri hejuru y'ubushyuhe bwa inter-aramid, aho ubushyuhe buhora bukoreshwa buri hagati ya -196°C na 204°C kandi nta kubora cyangwa gushonga kuri 560°C. Ikintu cy'ingenzi kiranga para-aramid ni imbaraga zayo nyinshi kandi ifite modulus nyinshi, imbaraga zayo zirenga 25g/dan, ni ukuvuga inshuro 5 ~ 6 z'icyuma cyiza, inshuro 3 z'umunyu w'ibirahure n'inshuro 2 z'umunyu w'ibirahure ukomeye wa nylon; modulus yayo ni inshuro 2 ~ 3 z'icyuma cyiza cyangwa ikirahure n'inshuro 10 z'umunyu w'ibirahure ukomeye wa nylon. Imiterere yihariye y'ubuso bwa aramid pulp, iboneka binyuze mu gushonga kw'iminyu w'ibirahure, irushaho kunoza uburyo ifata ibintu bityo ikaba nziza nk'umunyu w'ibirahure bikomeza gukururana no gufunga. Aramid Pulp Hexagonal Special Fibre I Aramid 1414 Pulp, umuhondo woroshye, ifite ifuru nyinshi, ifite imbaraga nyinshi, ihamye neza, idacika intege, irwanya ubushyuhe bwinshi, irwanya ingese, ikomeye, igabanuka buhoro, irwanya kwangirika neza, ubuso bunini, ifatanya neza n'ibindi bikoresho, ibikoresho bikomeza bifite ubushuhe bwa 8%, uburebure bwa mm 2-2.5 n'ubuso bwa 8m2/g. Ikoreshwa nk'ibikoresho bikomeza gasket bifite imbaraga kandi bifunga neza, kandi ntabwo byangiza ubuzima bw'abantu n'ibidukikije, kandi ishobora gukoreshwa mu gufunga mu mazi, amavuta, aside idasanzwe kandi iringaniye. Byagaragaye ko imbaraga z'ibicuruzwa zingana na 50-60% by'ibicuruzwa bikomejwe na fibre ya asbestos iyo hongewemo munsi ya 10% by'urusenda. Ikoreshwa mu gushimangira ibikoresho bikomejwe no gufunga n'ibindi bicuruzwa byakozwe, kandi ishobora gukoreshwa nk'ubundi buryo bwo gusimbura asbestos mu bikoresho bikomejwe, impapuro zirinda ubushyuhe n'ibikoresho bikomejwe.
Igihe cyo kohereza: Kanama-01-2022