Rubber ya Styrene-butadiene (SBR)

Ribber ya Styrene-butadiene (SBR) ni reberi ikoreshwa cyane kandi irashobora gukorwa na copolymerisation ya butadiene (75%) na styrene (25%) ukoresheje intangiriro yubusa.Kopolymer idasanzwe irabonetse.Microstructure ya polymer ni 60% –68% trans, 14% –19% cis, na 17% –21% 1,2-.Uburyo butose busanzwe bukoreshwa mukuranga polybutadiene polymers na copolymers.Leta ikomeye NMR itanga inzira yoroshye yo kumenya polymer microstructure.

Kugeza ubu, SBR nyinshi ikorwa na copolymerizing monomers ebyiri hamwe na catalizator ya anionic cyangwa guhuza.Imikorere ya kopolymer ifite imiterere yubukanishi hamwe no kugabanya uburemere bwa molekile.Copolymer idasanzwe hamwe nurutonde rwateganijwe nayo irashobora gukorwa mugisubizo ukoresheje butyl-lithium, mugihe monomers zombi zishyurwa buhoro.Hagarika copolymers ya butadiene na styrene birashobora kubyazwa umusaruro hakoreshejwe guhuza cyangwa catalizike ya anionic.Butadiene polymerize mbere kugeza ikoreshejwe, hanyuma styrene itangira polymerize.SBR yakozwe na catalizatori ihuza imbaraga zifite imbaraga zingana kurenza izakozwe nabatangije radical yubuntu.

Ikoreshwa nyamukuru rya SBR nugukora amapine.Ibindi bikoreshwa birimo inkweto, impuzu, inyuma ya tapi, hamwe nuduti.

Ikiranga

Kwambara birwanya, gusaza, kurwanya amazi no gukomera kwumwuka biruta reberi karemano, mugihe gufatira hamwe, kworoha no guhindura agaciro karori biri munsi ya reberi karemano.Styrene butadiene reberi ifite ibintu byiza byuzuye.Nubwoko bunini bwa reberi yubukorikori, kandi ibisohoka bingana na 60% bya rubber.Hafi ya 87% yubushobozi bwa reberi ya styrene butadiene kwisi ikoresha emulion polymerisation.Muri rusange, reberi ya styrene butadiene yerekeza cyane cyane kuri emulsion polymerized styrene butadiene rubber.Emulsion polymerized styrene butadiene reberi ikubiyemo kandi ubushyuhe bwo hejuru bwa emulsion polymerisation ya butadiene styrene hamwe nubushyuhe buke bwa emulsion polymerisation ya butadiene ikonje.

Koresha

Ikoreshwa mugukora reberi ya sponge, fibre yatewe hamwe nigitambara, nayo ikoreshwa nkibifatika, gutwikira nibindi.