I-Flame retardant wire, ibhekisela ocingweni olunezimo zokunqanda umlilo, ngokuvamile esimweni sokuhlolwa, ngemva kokuba ucingo lushisiwe, uma ugesi unqanyulwa, umlilo uzolawulwa ngaphakathi kobubanzi obuthile, ngeke usabalale, ngokunqanda ilangabi futhi uvimbele ukusebenza kwentuthu enobuthi. I-Flame retardant wire njengengxenye ebalulekile yokuphepha kukagesi, ukukhetha kwezinto zayo kubalulekile, imakethe yamanje ivame ukusetshenziswa ngezinto zocingo ezibuyisela amalangabi okuhlanganisaI-PVC, I-XLPE, irabha ye-silicone kanye nezinto zokufakelwa kwamaminerali.
Intambo ebuyisela amalangabi nokukhetha kwezinto zekhebula
Ukuphakama kwenkomba ye-oksijini yezinto ezisetshenziswa ekhebula le-flame retardant, ngcono ukusebenza kwe-flame retardant, kodwa ngokwanda kwenkomba ye-oxygen, kuyadingeka ukulahlekelwa ezinye izakhiwo. Uma izakhiwo ezingokoqobo kanye nezinqubo zenqubo yezinto ezibonakalayo zincishisiwe, ukusebenza kunzima, futhi izindleko zempahla ziyanda, ngakho-ke kuyadingeka ukukhetha ngokunengqondo nangokufanele inkomba ye-oksijini, inkomba ye-oksijini yezinto ezijwayelekile zokufaka i-insulation ifinyelela ku-30, umkhiqizo ungadlula izidingo zokuhlola zekilasi C ngokwendinganiso, uma izinto zokushefa nezinto zokugcwalisa ziyizinto ezincibilikisa ilangabi, umkhiqizo ungahlangabezana nezidingo ze-Class Bwire kanye nezinto ezisetshenziswayo ze-Fladant Class. ihlukaniswe yaba izinto ezibushela ilangabi ezinama-halogenated kanye nezinto ezivimbela ilangabi ezingenalo halogen;
1. Izinto ze-halogenated flame retardant
Ngenxa yokubola nokukhululwa kwe-hydrogen halide lapho ukuvutha kushisa, i-hydrogen halide ingakwazi ukuthwebula impande ye-radical yamahhala engu-HO, ukuze ukusha kwento kubambezeleke noma kucishwe ukuze kufezwe injongo yokubuyiswa komlilo. Okuvame ukusetshenziswa i-polyvinyl chloride, irabha ye-neoprene, i-chlorosulfonated polyethylene, irabha ye-ethylene-propylene nezinye izinto.
(1) I-polyvinyl chloride ye-Flame retardant (PVC) : Ngenxa yentengo eshibhile ye-PVC, ukufakwa kahle kwe-insulation kanye ne-flame retardant, isetshenziswa kabanzi ocingweni olujwayelekile lomlilo olula futhi ikhebula. Ukuze kuthuthukiswe ukubambezeleka komlilo kwe-PVC, ama-halogen flame retardants (i-decabromodiphenyl ethers), amapharafini ane-chlorinated kanye ne-synergic flame retardants kuvame ukungezwa kufomula ukuze kuthuthukiswe ukubambezeleka komlilo kwe-PVC.
Irabha ye-ethylene propylene (EPDM) : ama-hydrocarbon angewona ama-polar, anezici ezinhle kakhulu zikagesi, ukumelana nokufakwa okuphezulu, ukulahleka kwe-dielectric ephansi, kepha irabha ye-ethylene propylene iyizinto ezivuthayo, kufanele sinciphise izinga lokuxhumanisa irabha ye-ethylene propylene, sinciphise ukunqanyulwa kwama-molecular chain okubangelwa yi-low molecular weight substance ukuze kuthuthukiswe izakhiwo ze-flame;
(2) Intuthu ephansi nezinto ezincisha ilangabi le-halogen
Ikakhulukazi i-polyvinyl chloride ne-chlorosulfonated polyethylene izinto ezimbili. Engeza i-CaCO3 ne-A(IOH)3 kufomula ye-PVC. I-Zinc borate ne-MoO3 inganciphisa ukukhululwa kwe-HCL kanye nenani lentuthu ye-polyvinyl chloride e-retardant flame, ngaleyo ndlela ithuthukise ukubusheka komlilo kwento, inciphise i-halogen, inkungu ye-asidi, ukukhishwa kwentuthu, kodwa ingase yenze inkomba ye-oxygen yehle kancane.
2. Izinto ezivimbela ilangabi ezingenalo halogen
Ama-Polyolefin izinto ezingenazo i-halogen, ezihlanganisa ama-hydrocarbon aphula isikhutha namanzi lapho eshiswa ngaphandle kokukhiqiza intuthu ebalulekile namagesi ayingozi. I-Polyolefin ikakhulukazi ihlanganisa i-polyethylene (PE) ne-ethylene - i-vinyl acetate polymers (E-VA). Lezi zinto ngokwazo azinayo i-flame retardant, zidinga ukwengeza ama-inorganic flame retardants kanye ne-phosphorus series retardants, ukuze zicutshungulwe zibe yizinto ezisebenzayo ezivimbela ilangabi le-halogen; Kodwa-ke, ngenxa yokuntuleka kwamaqembu e-polar ochungechungeni lwamangqamuzana ezinto ezingezona ze-polar ezine-hydrophobicity, ukuhlobana nama-inorganic flame retardants ampofu, kunzima ukubopha ngokuqinile. Ukuze kuthuthukiswe umsebenzi ongaphezulu we-polyolefin, ama-surfactants angangezwa kufomula. Noma ku-polyolefin exutshwe nama-polymers aqukethe amaqembu e-polar, ukuze kwandiswe inani lokugcwalisa i-flame retardant, ukuthuthukisa izakhiwo zemishini kanye nezakhiwo zokucutshungulwa kwezinto ezibonakalayo, kuyilapho kutholwa i-flame retardant engcono. Kungabonakala ukuthi intambo ye-flame retardant nekhebula kusenenzuzo kakhulu, futhi ukusetshenziswa kuhambisana kakhulu nemvelo.
Isikhathi sokuthumela: Dec-03-2024