有机硅材料
有機硅材料
유궤규재료
SILICONE MATERIAL
2013年
4期
255-261
,共7页
高健%姜其斌%曾智%赵慧宇%毕俊%廖进彬
高健%薑其斌%曾智%趙慧宇%畢俊%廖進彬
고건%강기빈%증지%조혜우%필준%료진빈
八苯基环硅氧烷%阴离子开环聚合%双苯基聚硅氧烷%正交试验%光学性能
八苯基環硅氧烷%陰離子開環聚閤%雙苯基聚硅氧烷%正交試驗%光學性能
팔분기배규양완%음리자개배취합%쌍분기취규양완%정교시험%광학성능
octaphenylcyclosiloxane%anionic ring-opening polymerization%diphenylpolysiloxane%orthog-onal test%optical property
用四甲基氢氧化铵引发八苯基环四硅氧烷开环聚合,以产物透光率和折射率为指标,采用L9(34)正交化试验研究了催化剂、促进剂、封端剂对产物光学性能的影响。结果表明,催化剂对产物透光率有显著影响,促进剂对产物透光率有一定的影响;最佳合成工艺为:催化剂质量分数为3%,促进剂质量分数为20%,封端剂质量分数为1.5%。催化剂、促进剂、封端剂对产物折射率和透光率的影响顺序为:催化剂>促进剂>封端剂。采用阿贝折射仪和紫外-可见光分光光度计表征产物的光学性能:折射率大于1.5000(25℃),400 nm处透光率大于90%,800 nm处透光率高达99.9%;采用FT-IR和1H NMR对其结构进行了表征。证实分子结构中引入了乙烯基,且产物中乙烯基含量的增长趋势和乙烯基环体的增长趋势一致。
用四甲基氫氧化銨引髮八苯基環四硅氧烷開環聚閤,以產物透光率和摺射率為指標,採用L9(34)正交化試驗研究瞭催化劑、促進劑、封耑劑對產物光學性能的影響。結果錶明,催化劑對產物透光率有顯著影響,促進劑對產物透光率有一定的影響;最佳閤成工藝為:催化劑質量分數為3%,促進劑質量分數為20%,封耑劑質量分數為1.5%。催化劑、促進劑、封耑劑對產物摺射率和透光率的影響順序為:催化劑>促進劑>封耑劑。採用阿貝摺射儀和紫外-可見光分光光度計錶徵產物的光學性能:摺射率大于1.5000(25℃),400 nm處透光率大于90%,800 nm處透光率高達99.9%;採用FT-IR和1H NMR對其結構進行瞭錶徵。證實分子結構中引入瞭乙烯基,且產物中乙烯基含量的增長趨勢和乙烯基環體的增長趨勢一緻。
용사갑기경양화안인발팔분기배사규양완개배취합,이산물투광솔화절사솔위지표,채용L9(34)정교화시험연구료최화제、촉진제、봉단제대산물광학성능적영향。결과표명,최화제대산물투광솔유현저영향,촉진제대산물투광솔유일정적영향;최가합성공예위:최화제질량분수위3%,촉진제질량분수위20%,봉단제질량분수위1.5%。최화제、촉진제、봉단제대산물절사솔화투광솔적영향순서위:최화제>촉진제>봉단제。채용아패절사의화자외-가견광분광광도계표정산물적광학성능:절사솔대우1.5000(25℃),400 nm처투광솔대우90%,800 nm처투광솔고체99.9%;채용FT-IR화1H NMR대기결구진행료표정。증실분자결구중인입료을희기,차산물중을희기함량적증장추세화을희기배체적증장추세일치。
Ring-open polymerization of octaphenylcyclotetrasiloxane with tetramethylammonium hydroxide as the catalyst was reported .Taking light transmittance and refractive index of the polymer as the response in-dicators, and the L9 (34 ) orthogonal test was made to investigate the influence of catalyst , promoter and end-capping agent on the optical properties of the polymer .Results showed that catalysts significantly affected the light transmittance of the polymer , while the promoter had certain effect on it .The optimal conditions of the orthogonal test were that with 3%of catalyst , 20%of promoter and 1.5%of end-capping agent .The order of the impact of the catalyst and regents on the light transmittance was the catalyst >the promoter>the end-cap-ping agent.The refractive index was above 1.5000 at 25℃ measured on an Abbe refractometer.The light transmittance characterized by ultraviolet -visible spectrophotometry was above 90% at 400 nm and up to 99.9%at 800 nm.The structures of the polymers were characterized by FT-IR and 1 H NMR, confirming the introduction of the vinyl groups on the polymer chain .Furthermore , the vinyl contents in the polymer in-creased with increment of the amount of vinyl monomer .The vinyl content of the prepared vinyldiphenylpolysi-loxane increased with increasing the amount of cyclic vinyl monomers .