Mubisabwa nko gukanda bishyushye, kubika ibyuma bya elegitoroniki, hamwe no gutondekanya imbaho zumuzunguruko, kutagira umuriro, kurwanya ubushyuhe bukabije -, hamwe n’umutekano wo gutwika ibikoresho byifuro byerekana neza ingaruka ziterwa n’umuriro n’umusaruro w’ibicuruzwa. Ibikoresho bitatu byingenzi biboneka kumasoko - EVA ifuro, ifuro rya EPDM, na flame - retardant silicone ifuro - iratandukanye cyane mubikorwa byabo byo kurwanya umuriro. Hasi ni igereranya ryuzuye ryerekana igipimo cyo gutwikwa, hejuru {{6} behavior imyitwarire yubushyuhe, uburozi bwumwotsi, hamwe nuburyo bukoreshwa.
一. EVA ifuro (ibikoresho bisanzwe bihendutse)
Kavukire ya EVA ni ibintu byaka cyane hamwe na ogisijeni ikabije ya 17-19; ingero zidahinduwe zujuje igipimo cya UL94 HB. Irashya cyane iyo ihuye numuriro ufunguye kandi igashonga mubitonyanga bishobora gutwika imbaho n'ibikoresho bikikije, bikarekura umwotsi mwinshi hamwe nuburozi bw’ubumara bwangiza mugihe cyo gutwikwa.
Ndetse iyo flame retardants yongewemo kugirango itange umuriro wahinduwe - irwanya EVA, igera gusa kuri V - 1 / V - 0 igipimo cyigihe gito kandi ifite imbogamizi zikomeye: mugihe kirekire cyerekanwe nubushyuhe buri hejuru ya dogere 80, uwuzuza flame-retardant yimbere arasohoka buhoro buhoro, bigatera kwangirika kwumuriro nyuma yo gushyuha; ku bushyuhe burenga dogere 120, ibintu byoroshe kandi bigabanuka, bigatuma bidakwiriye rwose ko ibintu bikomeza ubushyuhe bwo hejuru bwogukoresha imashini zikoresha PCB (hejuru ya dogere 200).
Inyungu yonyine nigiciro cyayo gito; birakwiriye gusa kubidukikije - gupakira ubushyuhe hamwe no kubika ubushyuhe -, kandi birabujijwe rwose gukoreshwa mumirongo yubushyuhe bwo hejuru -.
2. EPDM (Ethylene Propylene Diene Monomer) ifuro (rusange - ifuro rigamije gufunga HVAC)
EPDM igaragaramo imiterere yuzuye ya molekuline hamwe no kurwanya ikirere kidasanzwe no kurwanya ozone. Ihindurwa ryayo ryujuje ubuziranenge bwa UL94 V-0, bigakora urwego rwa karubone ibuza umuriro gukwirakwira mugihe cyo gutwikwa mugihe itanga ibitonyanga bike byashonze kandi bikerekana ubucucike bwumwotsi ugereranije na EVA.
Nyamara, hari imipaka igaragara hejuru yubushyuhe bwayo -: ubushyuhe burebure - igihe kirekire ubushyuhe bwo gukora butangirira kuri dogere - 40 kugeza kuri dogere 120, hamwe nubushyuhe bwo hejuru - butarenze dogere 175. Gukomeza guhura nubushyuhe buri hejuru ya dogere 180 bizatera buhoro buhoro koroshya no gutakaza elastique; ikirimi - gisubiza inyuma karubone irashobora kwangirika no gutandukana nubushyuhe burenga dogere 200, bityo igatakaza ubushobozi bwayo bwo kwirinda umuriro.
Byakoreshejwe cyane cyane muburyo bwo guhumeka, kubika imiyoboro no gufunga, kimwe nigihe gito - igihe gito - ubushyuhe bwo gukoresha ubushyuhe; icyakora, ntibikwiye gukoreshwa hamwe nimbaho za PCB cyangwa HDI hejuru - uburyo bwo guhuza ubushyuhe.
EPDM ifuro hamwe nibituba
3. Flame - retardant foam silicone (ibikoresho bisabwa kuri PCB kanda sponge padi)
Byakozwe muburyo bwihariye - ubushyuhe bwinganda zikoreshwa mu nganda, ibi bikoresho bifata ifuro ryerekana uburyo buhoraho bujyanye nu ntera yo hejuru yo kutagira umuriro wa UL94 V - 0, bigatuma ihitamo uburyo bwo kurwanya umuriro mu buryo butatu bushoboka.
Ibiranga gutwika: Nibyonyine - bizimya byihuse iyo uhuye numuriro ufunguye mumasegonda 10, byerekana karubone nkeya gusa idafite ibitonyanga byaka; itanga umwotsi muke, ni halogen - yubusa kandi idafite - uburozi, kandi ntisohora imyuka yangiza ishobora kwanduza umuringa wumuringa cyangwa imbaho zumuzunguruko.
Ubushyuhe bwo hejuru - flame - itajegajega: Ihanganira igihe kirekire guhura nubushyuhe buri hagati ya dogere 200-230, ndetse nigihe gito - gihe cyaho ubushyuhe bukabije bugera kuri dogere 250 mubinyamakuru ntibitera koroshya cyangwa gusenyuka. Ifunze ryayo - imiterere ya selile itanga ubushyuhe burambye; urumuri - rwuzuza ibintu ntirishobora gusohoka cyangwa ngo rusuzugurwe ku bushyuhe bwinshi, nta kugabanuka gukabije kw’umuriro nyuma y’izuba rirenga igihumbi.
Ibyiza byingenzi: sulfure - yubusa kandi idafite imvura, igaragaramo imbaraga nyinshi zo gukoresha inshuro nyinshi mugihe wujuje ibyangombwa bitatu byingenzi - umutekano wo kwirinda umuriro, kugabanuka kuringaniza, hamwe no - kurwanya ubushyuhe - bigatuma bikwiranye neza n’umurongo wo hejuru w’umutekano -