橡膠硫化促進(jìn)劑cbs合成工藝的改進(jìn)研究

1、天津大學(xué)碩士學(xué)位論文橡膠硫化促進(jìn)劑CBS合成工藝的改進(jìn)研究姓名：高妍申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：化學(xué)工藝指導(dǎo)教師：李淑芬20090501ABSTRACTNcyclohexyl2benzothiazolesulfenamide(cBs)is鋤environmentallyfriendlyvulcanizationacceleratorwhichhaswidelyusedinrubberindustryathomeandabroadMostpr

2、ocessesofproducingCBSusedsodiumhypochloriteasoxidizingagentHoweverthedisadvantagesofthisapproachlieinitspollutiontotheenvironmentInthisthesis，hydrogenperoxideasoxidizingagentorhydrogenperoxideandsodiumhypochloriteas“mixe

3、doxidants”wereusedtOprepareCBS，theaimisteducethesalinityinthewastewaterandenhancethequalityoftheproductFirstlyrubbervulcanizationacceleratorCBSwaspreparedfrom2mercaptobenzothiazole(vulcanizationacceleratorM1andcyclohexyl

4、aminewithhydrogenperoxideasoxidant111eprocessincludedthestepsofbeating，oxidation，filtrating，washinganddrynessThetechnicalindexesofCBSweredetectedandtheHPLCmethodwasconductedforanalyzingfinalproductEffectofsomefactors，suc

5、hasbeatingtime，beatingtemperature，moleratioofcyclohexylaminetOM，moleratioofH202t0M，oxidationtime，oxidationtemperatureontheyieldandqualityofCBSwerestudiedneexperimentalresultsshowedthattheaverageyieldandthepurityofCBSwere

6、86O％and992％respectivelyundertheoptimalprocessconditionsanditsqualityhasreachedthetopgradeindexesofdomesticindustrialstandardInordertofurtherincreasetheyieldofCBS，anewprocesswithmixedoxidantswasdeveloped，iepreliminaryoxid

7、ationwasachievedwithhydrogenperoxide，andthensodiumhypochloriteasoxidantwasusedinthelaterperiodTheinfluencesoffollowingfactorswerealsoinvestigated，includingtheamountofhydrogenperoxide，droppingtemperatureofhydrogenperoxide

8、，droppingtimeandtemperatureofsodiumhypoch|oriteUndertheoptimalprocessconditions，theaverageyieldandthepurityofCBSwereabout95O％and990％respectivelyanditsqualityhasalseachedthetop—gradeindexesofdomesticindustrialstandardTher

9、ecyclingcyclohexylaminewasalsousedinthereaction，whichcouldfurtherimprovetheeconomyoftheprocessTheexperimentalresultsshowedthattheaverageyieldandthepurityofCBSwere974％and982％respectively，anditsqualityhasreachedthefirst—gr