Rubber yana da elasticity mai kyau, amma wannan dukiya mai daraja yana haifar da matsala mai yawa a cikin samar da samfur. Idan elasticity na raw roba ba a fara ragewa ba, yawancin makamashin injin yana cinyewa a cikin nakasar nakasa yayin aikin sarrafawa, kuma ba za a iya samun siffar da ake bukata ba. Fasahar sarrafa roba tana da wasu bukatu na robobin danyen roba, kamar hadawa, wanda gaba daya yana bukatar dankon Mooney na kusan 60, da shafan roba, wanda ke bukatar dankowar Mooney na kusan 40, In ba haka ba, ba zai yiwu a yi aiki da kyau ba. . Wasu raw adhesives suna da wuyar gaske, suna da babban danko, kuma basu da asali da mahimmancin kayan aiki - filastik mai kyau. Domin biyan buƙatun tsari, dole ne a yi amfani da ɗanyen roba don yanke sarkar kwayoyin halitta kuma a rage nauyin kwayoyin halitta a ƙarƙashin inji, thermal, sunadarai da sauran ayyuka. Filin filastik wanda ke rasa elasticity na ɗan lokaci kuma ya zama mai laushi kuma mai sauƙi. Ana iya cewa ɗanyen roba gyare-gyare shine tushen sauran hanyoyin fasaha.
Manufar raw roba gyare-gyaren shi ne: da farko, don samun wani mataki na plasticity ga raw roba, yin shi dace da hadawa, mirgina, extrusion, forming, vulcanization, kazalika da bukatun da matakai kamar roba slurry da soso roba. masana'anta; Na biyu shi ne a daidaita robobin danyen roba domin samar da kayan roba mai inganci iri-iri.
Bayan yin filastik, kayan jiki da sinadarai na ɗanyen roba suma suna fuskantar canje-canje. Saboda ƙarfin injina mai ƙarfi da iskar oxygen, tsarin kwayoyin halitta da nauyin kwayoyin halitta na roba zai canza zuwa wani ɗan lokaci, don haka kayan jiki da na sinadarai suma zasu canza. Ana bayyana wannan a cikin raguwar haɓakawa, haɓakar filastik, haɓakar solubility, raguwa a cikin danko na maganin roba, da kuma inganta aikin m na kayan roba. Amma yayin da robobin ɗanyen roba ya ƙaru, ƙarfin injin ɗin na roba yana raguwa, nakasar dindindin tana ƙaruwa, juriya da juriya na tsufa duka suna raguwa. Sabili da haka, gyare-gyaren ɗanyen roba yana da amfani kawai ga tsarin sarrafa roba, kuma ba ya da amfani ga aikin vulcanized roba.
Lokacin aikawa: Yuli-26-2023
