Styrene-butadiene roba (SBR) shine robar roba da aka fi amfani da ita kuma ana iya samar da ita ta hanyar copolymerization na butadiene (75%) da styrene (25%) ta amfani da masu farawa masu tsattsauran ra'ayi.Ana samun bazuwar copolymer.Microstructure na polymer shine 60% -68% trans, 14% -19% cis, da 17% -21% 1,2-.Ana amfani da hanyoyin rigar kullum don siffanta polybutadiene polymers da copolymers.NMR mai ƙarfi-jihar yana ba da hanya mafi dacewa don ƙayyade ƙananan ƙirar polymer.
A halin yanzu, ana samar da ƙarin SBR ta hanyar haɗa nau'ikan monomers guda biyu tare da abubuwan haɓakawa na anionic ko daidaitawa.Copolymer da aka kafa yana da ingantattun kaddarorin inji da kuma kunkuntar rabon nauyin kwayoyin halitta.Hakanan ana iya yin copolymer bazuwar tare da jerin oda a cikin mafita ta amfani da butyl-lithium, muddin ana caje monomers biyu a hankali.Ana iya samar da toshe copolymers na butadiene da styrene a cikin mafita ta amfani da daidaitawa ko abubuwan motsa jiki.Butadiene yana fara yin polymerizes da farko har sai an cinye shi, sannan styrene ya fara yin polymerize.SBR da aka samar ta hanyar haɗakarwa yana da ingantacciyar ƙarfi fiye da wanda aka samar ta masu ƙaddamar da tsatsauran ra'ayi.
Babban amfani da SBR shine don samar da taya.Sauran amfani sun haɗa da takalma, sutura, goyan bayan kafet, da mannewa.
Siffar
Juriya na sawa, juriya na tsufa, juriya na ruwa da ƙarfin iska sun fi roba na halitta, yayin da adhesion, elasticity da deformation calorific darajar sun kasance ƙasa da roba na halitta.Styren butadiene roba yana da kyawawan kaddarorin abubuwa.Ita ce mafi girman nau'in roba na roba, kuma abin da yake fitarwa ya kai kashi 60% na roba.Kimanin kashi 87% na ƙarfin samar da roba na styrene butadiene a duniya yana amfani da emulsion polymerization.Gabaɗaya magana, styrene butadiene roba galibi yana nufin emulsion polymerized styrene butadiene roba.Emulsion polymerized styrene butadiene roba kuma ya haɗa da babban zafin jiki emulsion polymerization na butadiene styrene da ƙananan zafin jiki emulsion polymerization na sanyi butadiene.
Amfani
Ana amfani da shi don yin robo na soso, fiber da aka saka da kuma masana'anta, ana amfani da su azaman m, shafi da dai sauransu.
Lokacin aikawa: Maris-10-2022