Flame Retardants: Igice cya kabiri kinini cya reberi ninyongera ya plastike
Flame retardantni umufasha wifashishwa mu gukumira ibikoresho gutwikwa no kubuza ikwirakwizwa ry’umuriro. Ikoreshwa cyane mubikoresho bya polymer. Hamwe nogukoresha kwinshi mubikoresho bya sintetike no kuzamura buhoro buhoro ibipimo byo kurinda umuriro, retardants zikoreshwa cyane muri plastiki, reberi, gutwikira, nibindi. retardants, organic halogenated flame retardants hamwe na fosifore kama yumuriro.
Ikirimi kidasanzweikora kumubiri, ifite imikorere mike nubwinshi bwinyongera. Ifite ingaruka runaka kumikorere yibikoresho. Ariko, kubera igiciro gito irashobora gukoreshwa mubicuruzwa byo mu rwego rwo hasi hamwe nibisabwa bike mubikorwa, nka plastiki PE, PVC, nibindi. Fata hydroxide ya aluminium (ATH) nkurugero. Bizagira umwuma no kubora nyuma yo gushyuha. gushika kuri 200 ℃. Inzira yo kubora ikurura ubushyuhe n’amazi, kugirango bibuze kuzamuka kwubushyuhe bwibintu, kugabanya ubushyuhe bwubuso bwibintu, kugabanya umuvuduko wibisubizo byumuriro. Muri icyo gihe, imyuka y'amazi irashobora kugabanya umwuka wa ogisijeni kandi ikarinda gutwikwa. Alumina ikorwa no kubora ifatanye n'ubutaka, ibyo bikaba bishobora kurushaho gukumira ikwirakwizwa ry'umuriro.
Organic halogen flame retardantscyane cyane gukoresha imiti. Imikorere yayo ni ndende kandi ibyiyongereye ni samll hamwe no guhuza neza na polymers. Zikoreshwa cyane mubikoresho bya elegitoronike, imbaho zumuzingo zacapwe nibindi bikoresho byamashanyarazi. Nyamara, bazohereza imyuka yubumara kandi yangirika, ifite ibibazo byumutekano no kurengera ibidukikije.Bromated flame retardants (BFRs)ni ubwoko bwa halogenated flame retardants. Undi nichloro-ikurikirana umuriro (CFRs). Ubushyuhe bwabo bwo kubora busa nubwa polymer ibikoresho. Iyo polymers ishyushye kandi ikangirika, BFR nayo itangira kubora, ikinjira mukarere ka gaz gazi yaka hamwe nibicuruzwa byangirika, bikabuza kubyitwaramo kandi bikumira ikwirakwizwa ryumuriro. Muri icyo gihe, gaze yarekuwe itwikiriye ubuso bwibikoresho kugirango ihagarike kandi igabanye umwuka wa ogisijeni, hanyuma igabanya umuvuduko wo gutwika kugeza irangiye. Mubyongeyeho, BFR isanzwe ikoreshwa ifatanije na antimoni oxyde (ATO). ATO ubwayo ntabwo ifite flame retardance, ariko irashobora gukora nk'umusemburo wo kwihuta kwangirika kwa bromine cyangwa chlorine.
Organic fosifore flame retardants (OPFRs)ikora haba kumubiri na chimique, hamwe nubushobozi buhanitse hamwe nibyiza byuburozi buke, kuramba no gukora cyane. Byongeye kandi, irashobora kandi kunoza itunganywa ryimyunyu ngugu, gutanga imikorere ya plastike nibikorwa byiza.Nibisabwa hejuru yo kurengera ibidukikije, OPFRs isimbuza buhoro buhoro BFR nkibicuruzwa byingenzi.
Nubwo kwiyongera kwa FR bidashobora gutuma ibikoresho birwanya umuriro rwose, birashobora kwirinda neza "flash burn", kugabanya umuriro wumuriro no gutsindira igihe cyiza cyo guhunga kubantu bari mumuriro. Gushimangira ibisabwa byigihugu kubijyanye na tekinoroji ya flame retardant nabyo bituma iterambere ryiterambere rya FRs ryaguka.
Igihe cyo kohereza: Ugushyingo-19-2021