1. Kwizirika
Rubber ya Ethylene-propylene ifite ingufu zifatika bitewe no kubura amatsinda akora muburyo bwa molekile.Byongeye kandi, reberi iroroshye kumera, kandi kwifata kwayo no gufatana ni bibi cyane.
Ethylene Propylene Rubber Yahinduwe Ubwoko butandukanye
Kuva EPDM na EPDM reberi yatunganijwe neza mu mpera za 1950 no mu ntangiriro ya za 1960, reberi zitandukanye zahinduwe na Ethylene propylene reberi na reberi ya thermoplastique etylene propylene (nka EPDM / PE) byagaragaye ku isi, bityo bitanga uburyo bwagutse bwo gukoresha reberi ya Ethylene propylene itanga ubwoko bwinshi n amanota.Ibikoresho byahinduwe na Ethylene-propylene cyane cyane birimo bromination, chlorine, sulfonation, anhydride yumugabo, anhydride yumugabo, guhindura silicone, hamwe na nylon ihindura reberi ya etilene-propylene.Rubber ya Ethylene-propylene nayo yashizemo acrylonitrile, acrylate nibindi.Mu myaka yashize, ibikoresho byinshi bya polymer bifite ibintu byiza byuzuye byabonetse hakoreshejwe kuvanga, gukoporora, kuzuza, gushushanya, gushimangira no guhuza molekile.Rubber ya Ethylene-propylene nayo yatejwe imbere cyane mubikorwa binyuze muguhindura, bityo ikagura urwego rwa rebero ya Ethylene-propylene.
Imashini ya etilene propylene reberi itunganywa na brominating agent ku ruganda rufunguye.Nyuma ya bromination, reberi ya Ethylene-propylene irashobora kunoza umuvuduko w’ibirunga hamwe n’imikorere ya adhesion, ariko imbaraga za mashini zayo ziragabanuka, bityo reberi ya etilene-propylene reberi ikwiranye gusa n’urwego rwagati rwa etilene-propylene reberi nizindi reberi.
Rubber ya chlorine etylene propylene ikozwe mugutambutsa gaze ya chlorine binyuze mumuti wa EPDM.Chlorination ya Ethylene-propylene reberi irashobora kongera umuvuduko wibirunga no guhuza hamwe nibiganiro bidahagije, birwanya flame, kurwanya amavuta, hamwe nibikorwa bya adhesion nabyo biratera imbere.
Rubber ya sulfone ya etylene propylene ikorwa mugushonga reberi ya EPDM mumashanyarazi hanyuma ikayivura hamwe na sulfonating agent na agent itabogamye.Rubber ya sulfonated etylene propylene izakoreshwa cyane mubifata neza, ibitambaro bisize, kubaka inyama zidafite amazi, hamwe no kurwanya ruswa bitewe nubushuhe bwa elastomer ya termoplastique hamwe nuburyo bwiza bwo gufatira hamwe.
Rubber ya Acrylonitrile yometse kuri reberi ikoresha toluene nk'inzoga ya benzyl ya solive na perchlorine nk'intangiriro yo gushira acrylonitrile kuri reberi ya Ethylene-propylene kuri 80 ° C.Acrylonitrile yahinduwe na etilene-propylene reberi ntigumana gusa imbaraga zo kwangirika kwa reberi ya Ethylene-propylene, ahubwo inabona imbaraga zo kurwanya amavuta ahwanye na nitrile-26, kandi ifite imiterere myiza yumubiri nubukanishi hamwe nuburyo bwo gutunganya.
Thermoplastique etylene propylene reberi (EPDM / PP) ishingiye kuri reberi ya EPDM na polypropilene yo kuvanga.Muri icyo gihe, ni ibicuruzwa bituma reberi ya Ethylene-propylene igera ku kigero giteganijwe cyo guhuza.Ntabwo igumana gusa ibiranga imiterere ya reberi ya Ethylene-propylene mu bijyanye n’imikorere, ariko kandi ifite imikorere idasanzwe yikoranabuhanga yo gutera inshinge, kuyikuramo, kubumba no gutondekanya ibintu bya termoplastique.
2. Ubucucike buke n'umutungo wuzuye wuzuye
Ubucucike bwa reberi ya Ethylene propylene ni reberi yo hepfo, n'ubucucike bwayo ni 0.87.Byongeye kandi, amavuta menshi arashobora kuzuzwa no kuzuza ibyongeweho, bityo igiciro cyibicuruzwa bya reberi gishobora kugabanuka, kandi ibibi byigiciro kinini cyibikoresho bya reberi mbisi ya Ethylene-propylene.Kuri reberi ya Ethylene-propylene ifite agaciro ka Mooney, ingufu z'umubiri na mashini zirashobora kugabanuka nyuma yo kuzura cyane.ntabwo ari binini.
3. Kurwanya ruswa
Bitewe no kubura polarite hamwe nubushyuhe buke bwo kutuzuza reberi ya Ethylene-propylene, ifite imbaraga zo kurwanya imiti itandukanye ya polar nka alcool, acide, alkalis, okiside, firigo, ibikoresho byogajuru, amavuta y’inyamanswa n’ibimera, ketone n’amavuta, nibindi. ;Ariko mumashanyarazi ya alifatique na aromatique (nka lisansi, benzene, nibindi) hamwe no guhagarara nabi mumavuta yubutare.Imikorere nayo izagabanuka mubikorwa birebire bya acide yibanze.Muri ISO / TO 7620, amoko agera kuri 400 yimiti yangiza ya gazi na mazi yakusanyirijwe kumitungo ya reberi zitandukanye, kandi amanota 1-4 yerekanwe kugirango agaragaze urwego rwibikorwa, n'ingaruka z'imiti yangirika kumiterere ya reberi:
Icyiciro Cyumubyimba Igipimo /% Kugabanya ubukana Agaciro Ingaruka kumikorere
1 <10 <10 gake cyangwa ntayo
2 10-20 <20 ntoya
3 30-60 <30 Guciriritse
4> 60> 30 birakabije
4. Kurwanya imyuka y'amazi
Rubber ya Ethylene-propylene ifite imbaraga zo guhangana n’umwuka w’amazi kandi bivugwa ko ari nziza kuruta ubushyuhe bwayo.Mu cyuka gishyushye kuri 230 ° C, nta gihinduka kigaragara nyuma yamasaha 100.Mubihe bimwe, fluororubber, silicone reberi, fluorosilicone rubber, butyl rubber, nitrile reberi, na reberi karemano bizagenda byangirika kugaragara nyuma yigihe gito ugereranije.
5. Kurwanya amazi ashyushye
Rubber ya Ethylene-propylene nayo ifite imbaraga zo kurwanya amazi ashyushye, ariko ifitanye isano rya hafi na sisitemu zose z’ibirunga.Rubber ya Ethylene-propylene hamwe na dimorpholine disulfide na TMTD kuko sisitemu y’ibirunga idafite impinduka nke mumiterere yubukanishi nyuma yo gushirwa mumazi ashyushye kuri 125 ° C mumezi 15, kandi igipimo cyo kwaguka ni 0.3% gusa.
6. Ibikoresho by'amashanyarazi
Rubber ya Ethylene-propylene ifite ibikoresho byiza byo gukwirakwiza amashanyarazi no kurwanya corona, kandi ibikoresho byayo byamashanyarazi birarenze cyangwa hafi ya reberi ya styrene-butadiene, chlorosulfonated polyethylene, polyethylene na polyethylene.
7. Elastique
Kubera ko nta bisimbuza polar mu miterere ya molekuline ya reberi ya etilene-propylene, ingufu zifatika za molekile ni nkeya, kandi urunigi rwa molekile rushobora gukomeza guhinduka mu buryo bwagutse, nyuma ya reberi karemano na reberi ya butadiene, kandi irashobora gukomeza ku bushyuhe buke.
8. Kurwanya gusaza
Rubber ya Ethylene-propylene ifite uburyo bwiza bwo guhangana nikirere, kurwanya ozone, kurwanya ubushyuhe, aside na alkali, kurwanya imyuka y’amazi, guhagarara neza kwamabara, ibikoresho byamashanyarazi, kuzuza amavuta hamwe nubushyuhe bwicyumba.Ibikoresho bya reberi ya Ethylene-propylene birashobora gukoreshwa igihe kirekire kuri 120 ° C, kandi birashobora gukoreshwa mugihe gito cyangwa rimwe na rimwe kuri 150-200 ° C.Ongeramo imiti ikwiye yo kurwanya gusaza irashobora kongera ubushyuhe bwa serivisi.Ibyiciro byibiribwa EPDM reberi (EPDM hose) ihujwe na peroxide irashobora gukoreshwa mubihe bibi.Mugihe cyimiterere ya ozone ya 50pphm no kurambura 30%, reberi ya EPDM irashobora kugera hejuru ya 150h idacitse.
Igihe cyo kohereza: Werurwe-31-2023