UV固化中硫鎓鹽光引發(fā)劑的合成與研究.pdf

1、湘潭大學碩士學位論文UV固化中硫鎓鹽光引發(fā)劑的合成與研究姓名：樊梅云申請學位級別：碩士專業(yè)：有機合成指導教師：陽年發(fā)20050401湘潭大學2005屆有機化學專業(yè)碩士論文3AbstractRecentlycationicUVcuringhasbecomeawellestablishedmethodinthecoatinginksadhesivesindustries.Photoinitiatisabasiliccompositionof

2、UVcurablesystemitisalsoimptanttoacceleratephotoinducedcationicpolymerization.Triarylsulfoniumsaltshavebeenstudiedappliedwidely.Howeverthesimpletriarylsulfoniumsaltsalreadyreptedexistasameproblemthatistheirmaximumabsption

3、wavelengthdoesnotmatchwiththelightsourceappliedinbusinesses.Usuallytherearetwokindsofmethodstochangeitsspectrumacteristic.Oneistoappendsensitizertheotheristoextendconjugateddegree.Akindnoveltriarylsulfoniumsaltascationic

4、photoinitiatwasdesignedsynthesizedaccdingtothesecondmethod.Fivesingletriarylsulfoniumsaltstwodoubletriarylsulfoniumsaltsweresynthesized.Thelatterhavemeextensiveconjugateddegree.Wefoundagoodmethodtopurifytheproductsthepur

5、eproductwastestifiedbyIRNMR.Wehavestudytheirspectrumacteristic.Theresultshowsthatthemaximumabsptionwavebis270~303nmtheEinsteinshiftdegreeofthedoublesulfoniumsaltismegreatthanwhichofthesinglesulfoniumsalt.Bytestingtheperf

6、manceofeachpureproductwefoundthattheycanallinitiatethecationicpolymerizationofepoxidesasmonomers.Meoverthecompositionisexcellentincompatibilitytramsparencycurabilitygivesacuredcoatofexcellentglossoflesssmell.Theyhavebett