Spunlace nonwoven wa pre-oxygenated fiber
Msika wagawo:
Makhalidwe a Pre-Oxygenated Fiber:
· Ultimate Flame Retardancy: Malire a oxygen index (LOI) nthawi zambiri amakhala> 40 (gawo la okosijeni mumpweya ndi pafupifupi 21%), kuposa la ulusi wamba woletsa malawi (monga poliyesitala woletsa moto wokhala ndi LOI pafupifupi 28-32). Simasungunuka kapena kudontha ikayatsidwa ndi moto, imadzizimitsa yokha ikachotsa gwero lamoto, ndipo imatulutsa utsi wochepa ndipo palibe mpweya wapoizoni ikayaka.
· Kukhazikika Kwambiri Kutentha: Kutentha kwanthawi yayitali kumatha kufika 200-250 ℃, ndipo kwakanthawi kochepa kumatha kupirira kutentha kwambiri kwa 300-400 ℃ (makamaka kutengera zida zopangira ndi digiri ya pre-oxidation). Imasungabe umphumphu wamapangidwe ndi machitidwe amakina m'malo otentha kwambiri.
· Kukaniza kwa Chemical: Imakana ku asidi, ma alkali, ndi zosungunulira za organic, ndipo sikokoloka mosavuta ndi zinthu zamakhemikolo, zoyenera kugwiritsidwa ntchito m'malo ovuta.
· Katundu Wina Wamakina: Ili ndi mphamvu yolimba komanso yolimba, ndipo imatha kupangidwa kukhala zida zokhazikika pogwiritsa ntchito njira zopangira nsalu zopanda nsalu (monga kukhomerera singano, spunlace).
II. Processing Technology ya Pre-Oxygenated Nonwoven Fabrics
Ulusi wokhala ndi okosijeni uyenera kusinthidwa kukhala zinthu zosalekeza ngati mapepala kudzera munjira zopangira nsalu zosawomba. Njira zodziwika bwino ndi izi:
· Njira Yoboola singano: Mwa kuboola mobwerezabwereza mauna a ulusi ndi singano za makina okhomerera singano, ulusiwo umalumikizana ndi kulimbikitsana wina ndi mzake, kupanga nsalu yopanda nsalu yokhala ndi makulidwe ndi mphamvu inayake. Njirayi ndi yoyenera kupanga nsalu zamphamvu kwambiri, zowonongeka kwambiri zomwe zisanachitikepo ndi okosijeni, zomwe zingagwiritsidwe ntchito pazochitika zomwe zimafuna chithandizo champangidwe (monga mapanelo oyaka moto, zipangizo zowonongeka kwambiri).
· Njira Yowongoleredwa: Kugwiritsa ntchito majeti amadzi othamanga kwambiri kuti akhudze mauna a fiber, ulusiwo umalumikizana ndikulumikizana. Nsalu ya spunlaced pre-oxygenated imakhala ndi kumverera kofewa komanso kupuma bwino, ndipo ndi yoyenera kugwiritsidwa ntchito mkati mwa zovala zotetezera, flexible padding fireproof, etc.
Kumangirira kwa Matenthedwe / Kumangirira kwa Chemical: Pogwiritsa ntchito ulusi wotsika kwambiri (monga poliyesitala woletsa moto) kapena zomatira kuti zithandizire kulimbikitsa, kuuma kwa nsalu yopanda okosijeni yopanda okosijeni kumatha kuchepetsedwa, ndikuwongolera magwiridwe antchito (koma dziwani kuti kukana kutentha kwa zomatira kumayenera kugwirizana ndi malo ogwiritsira ntchito oxygen).
Pakupanga kwenikweni, ulusi wopangidwa ndi okosijeni nthawi zambiri umasakanizidwa ndi ulusi wina (monga aramid, viscose yoletsa malawi, ulusi wagalasi) kuti athe kulinganiza mtengo, kumva ndi magwiridwe antchito (mwachitsanzo, nsalu yoyera yopanda oxidized yomwe sinalukidwe ndizovuta, koma kuwonjezera 10-30% viscose yoletsa moto imatha kusintha kufewa kwake).
III. Zochitika zenizeni zogwiritsira ntchito nsalu za pre-oxidized fiber non-woven
Chifukwa cha mphamvu zake zosagwira moto komanso zosagwira kutentha kwambiri, nsalu zokhala ndi oxidized fiber zosalukidwa zimagwira ntchito yofunika kwambiri m'magawo angapo:
1. Kuzimitsa moto ndi chitetezo chaumwini
· Chophimba chamkati cha Wozimitsa moto / wosanjikiza wakunja: Nsalu yosakanizidwa kale ndi oxidized ndi yotentha moto, yotentha kwambiri komanso yopuma mpweya, ndipo ingagwiritsidwe ntchito ngati maziko a suti zozimitsa moto kuti aletse kusamutsidwa kwa moto ndi kutentha kwakukulu, kuteteza khungu la ozimitsa moto; akaphatikizidwa ndi aramid, amathanso kusintha kukana kuvala komanso kukana misozi.
· Zida zotetezera zowotcherera / zitsulo: Zomwe zimagwiritsidwa ntchito powotcherera zitsulo zotchinga, magolovesi osagwira kutentha, ma apuloni ogwira ntchito zitsulo, ndi zina zotero, kukana kuphulika kwamoto ndi kutentha kwapamwamba (ndi kutentha kwanthawi kochepa kupitirira 300 ° C).
• Zinthu zothawirako mwadzidzidzi: Monga zofunda zozimitsa moto, zosefera zotchingira chigoba, zomwe zimatha kukulunga thupi kapena kusefa utsi pamoto (utsi wochepa komanso kusakhala ndi poizoni ndizofunikira kwambiri).
2. Chitetezo cha kutentha kwa mafakitale ndi kutsekemera
· Zida zopangira mafakitale: Zimagwiritsidwa ntchito ngati mkati mwa mipope yotentha kwambiri, mapepala otsekemera a boilers, ndi zina zotero, kuchepetsa kutentha kwa kutentha kapena kusamutsa (kukana kwa nthawi yaitali ku 200 ° C ndi pamwamba pa malo).
· Zipangizo zomangira zosapsa ndi moto: Monga gawo lodzaza makatani osayaka moto ndi zotchingira zozimitsa moto mnyumba zazitali, kapena zida zokutira chingwe, kuti achedwetse kufalikira kwa moto (kukwaniritsa kalasi ya GB 8624 yolimbana ndi moto B1 ndi pamwambapa zofunika).
· Chitetezo cha zipangizo zotentha kwambiri: Monga makatani a uvuni, zophimba kutentha kwa ng'anjo ndi ma uvuni, kuteteza ogwira ntchito kuti asawotchedwe ndi kutentha kwakukulu kwa zipangizo.
3. Kutentha kwambiri kusefa minda
· Kusefedwa kwa gasi wa utsi wa mafakitale: Kutentha kwa mpweya wa utsi wochokera ku zopsereza zinyalala, mphero zazitsulo, ng'anjo za chemical reaction nthawi zambiri zimafika pa 200-300 ° C, ndipo zimakhala ndi mpweya wa acidic. Nsalu yopangidwa ndi okosijeni yopangidwa ndi pre-oxidized imalimbana ndi kutentha kwambiri komanso dzimbiri, ndipo imatha kugwiritsidwa ntchito ngati maziko a matumba a fyuluta kapena masilinda a fyuluta, zosefera bwino.
4. Zochitika zina zapadera
Zipangizo zothandizira mumlengalenga: zimagwiritsidwa ntchito ngati zosanjikiza zosanjikiza moto m'kati mwa zipinda za ndege ndi zotenthetsera kutentha mozungulira mainjini a roketi (omwe amafunika kulimbikitsidwa ndi utomoni wosatentha kwambiri).
Zipangizo zotchingira magetsi: Zomwe zimagwiritsidwa ntchito ngati ma gaskets otsekera m'magalimoto otenthetsera kwambiri ndi ma thiransifoma, zimatha kulowa m'malo mwa zida zachikhalidwe zaasibesito (zopanda carcinogenic komanso zokonda zachilengedwe).
Iv. Ubwino ndi Chitukuko cha Pre-Oxidized fiber Nonwoven Fabrics
Ubwino wake: Poyerekeza ndi zinthu zakale zomwe sizimawotchera malawi (monga asibesitosi ndi ulusi wagalasi), nsalu zokhala ndi okosijeni zomwe sizinawombedwe ndi okosijeni sizikhala ndi khansa ndipo zimatha kusinthasintha. Poyerekeza ndi ulusi wamtengo wapatali monga aramid, ili ndi mtengo wotsika (pafupifupi 1/3 mpaka 1/2 ya aramid) ndipo ndiyoyenera kugwiritsa ntchito batch muzochitika zapakati komanso zotsika kwambiri zoletsa moto.
Makhalidwe: Kupititsa patsogolo kuphatikizika ndi kusefera bwino kwa nsalu zosalukidwa kudzera pakuwongolera ulusi (monga filaments yabwino yokana okosijeni, m'mimba mwake <10μm); Kupanga njira zosamalira zachilengedwe zokhala ndi formaldehyde yochepa komanso zopanda zomatira; Kuphatikizidwa ndi ma nanomatadium (monga graphene), kumawonjezera kukana kutentha kwambiri komanso antibacterial properties.
Pomaliza, ntchito ulusi chisanadze makutidwe ndi okosijeni mu nsalu sanali nsalu zimadalira katundu wawo gulu la "lawi retardancy ndi mkulu-kutentha kukana" kuthana ndi zofooka ntchito ya zipangizo chikhalidwe mu kutentha kwambiri ndi lotseguka lawi malo. M'tsogolomu, ndikukweza miyezo ya chitetezo cha mafakitale ndi chitetezo cha moto, zochitika zawo zogwiritsira ntchito zidzakulitsidwanso.
