Ibipapuro bifunga PVC byahindutse gukundwa kumuryango wibyuma bya pulasitike no gufunga idirishya kuko bidacika kandi byoroshye gusudira. Ariko imyaka 2-3 gusa, ikibazo cyaragaragaye. Itandukanyirizo rya pulasitike ya PVC, ikibazo kitoroshye cyinganda mpuzamahanga, cyagaragaye neza mumirongo ya kashe ya PVC.
Bitewe no gutandukanya plasitike, umwirondoro wanduye na rubber, uburebure buragabanuka, igice cyacitse kigufi, kandi ibibazo byo gufunga nabi ni byinshi. Nyamara, gutunganya uduce duto duto two mu Bushinwa, kugabanya ibiciro by’Ubushinwa, no guhatanira ibiciro by’igishinwa ku giciro gito ku ruganda n’amadirishya yo gufunga amadirishya byatumye hakoreshwa plasitike zifite inenge ndetse na PVC itunganyirizwa mu mahanga, ibyo bikaba byakajije umurego mu nganda zose zifunga kashe. Impera ya kashe ya PVC itangiye kugaragara.
EPDM Ikimenyetso cya EPDM Mu ntangiriro za 2000, igihugu cyatanze itegeko ry’imbonezamubano ryo kugabanya ikoreshwa rya kashe ya polyvinyl chloride PVC, kandi riteza imbere ikoreshwa rya kashe ya EPDM EPDM hamwe na kashe ya MVQ silicone. EPDM ifunga kashe, urwego rwohejuru rwo gufunga ikoreshwa mumodoka na gariyamoshi, amaherezo yemejwe ninganda zubaka.
Mubyukuri, yakoreshwaga cyane mubikorwa byumuryango nidirishya nyuma ya 2002. Muri kiriya gihe, inzugi nidirishya byinjiye buhoro buhoro mugihe cyo kumena ikiraro cya aluminiyumu. EPDM yabaye kimwe no murwego rwohejuru rwo gufunga kashe kubera imiterere yumubiri isumba iyindi hamwe no kurwanya gusaza neza. Mu mwaka wa 2011, wibasiwe n’amavuta mpuzamahanga n’ibindi bintu, igiciro cya Ethylene propylene cyarazamutse, maze igihe cy’itumba cy’imigozi ya kashe ya EPDM kiraza, bityo ubwenge bw’Abashinwa buza, reberi isubirwamo itangira gukoreshwa ku bwinshi, kandi isoko yose yo gufunga kashe yari mu kajagari. Ikidodo cyiza kiragoye kunyuramo. Urugi nidirishya bifunga uruganda rukora @ 门 Idirishya county Intara runaka yo mubushinwa niyo shingiro ryimigozi yo murugo, kandi hafi 70% yinyubako zububiko bwa EPDM mubushinwa zituruka muriyi ntara. Muri iyi ntara hariho umutware mu mwuga umwe, kandi 70% by'ibipapuro bifunga kashe ya Ethylene-propylene bituruka muri twe.
Silicone reberi yo gufunga ntabwo ari ibintu bigezweho byo gufunga imirongo, ariko sibyo. Rubber ya silicone ifite amateka yimyaka mirongo mubushinwa. Abakora urugi nidirishya bifunga impapuro mubyukuri nibyo bakunda reberi mumyaka mike ishize, kandi biroroshye. Mu myaka yashize, ibiciro byagabanutse buhoro buhoro, kandi byagiye bikoreshwa buhoro buhoro mukubaka kashe.
Ugereranije na reberi ya Ethylene-propylene, ibyiza bya reberi ya silicone yo gufunga ni uko ifite imikorere myiza yo kugabanuka no guhindura imikorere kurusha reberi ya Ethylene-propylene, bityo rero ikimenyetso cyo gufunga kikaba cyiza, kandi uhereye ku ihame ry’ubushyuhe bw’igihe, reberi ya silicone irashobora kwihanganira ubushyuhe bugera kuri 300 ° C, kandi ikarwanya reberi ya Ethylene-propylene. Rubber nibyiza 180 ° C. Mubushyuhe bumwe, ubuzima bwa reberi ya silicone bwikubye kabiri ubwiza bwa etylene propylene, kandi ubuzima bwa serivisi ni burebure. Kandi ifite inertie nziza ya physiologique, idafite uburozi, uburyohe, silicone reberi nayo ifite ubushyuhe budasanzwe, kurwanya ubukonje, imiterere ya dielectric, kurwanya ozone no kurwanya gusaza kwikirere hamwe nindi mirimo, imikorere idasanzwe ya reberi ya silicone ni ugukoresha ubushyuhe bwagutse, irashobora gukoresha urugi nidirishya bifunga uruganda rukora igihe kirekire kuri -60 ° C (cyangwa ubushyuhe bwo hejuru) kugeza kuri 250 ° C (cyangwa hejuru yubushyuhe). Rubiceri ya silicone rero ni amahitamo meza yo kubaka kashe mugihe kigezweho.
Igihe cyo kohereza: Nzeri-01-2023