MOTHEO HO ETSA HORE NA POLYURETHANE RUBBER
Khoutu (UR) ke polymerization ea polyester (kapa polyether) le motsoako oa diisocyanate. Sebopeho sa eona sa lik'hemik'hale se rarahane ho feta li-polymers tse tloaelehileng tsa elastic. Ntle le lihlopha tsa urethane tse iphetang, hangata ketane ea limolek'hule e boetse e na le lihlopha tsa ester, lihlopha tsa ether, lihlopha tse nkhang hamonate le tse ling tse joalo.
Ketane e kholo ea molek'hule ea UR e na le karolo e tenyetsehang le karolo e thata; karolo e feto-fetohang e boetse e bitsoa karolo e bonolo 'me e entsoe ka oligomer polyol (e kang polyester, polyether, polybutadiene, joalo-joalo); Karolo e thata e bitsoa sehlahisoa sa reaction sa disocyanate (joaloka TDI, MDI, joalo-joalo) le molek'hule e nyenyane extender (e kang diamine le glycol). Likarolo tse bonolo li ikarabella ho feta likarolo tse thata. Ho thatafala ha likarolo tse bonolo le tse thata li fapane. Likarolo tse thata li polar haholoanyane 'me ho bonolo ho li bokella hammoho. Likarolo tse ngata tse nyenyane li thehoa karolong e bonolo ea karolo, e bitsoang micro-phase separation structure. Thepa ea eona ea 'mele le ea mochini le micro-phase Tekanyo ea karohano e amana haholo le eona.
Ketane e kholo ea molek'hule ea UR e na le matla a phahameng le elasticity e phahameng ka lebaka la ho sebelisana ha li-hydrogen bond.
Litšobotsi: E na le melemo ea boima bo phahameng, matla a matle, elasticity e phahameng, khanyetso e phahameng ea ho roala, ho hanyetsa meokho, ho hanyetsa botsofali, ho hanyetsa ozone, ho hanyetsa mahlaseli le motlakase o motle oa motlakase. Ha e bapisoe le rabara e tloaelehileng.
Nako ea poso: Sep-02-2019