纳米SiO_2杂化材料的制备及其UV固化性能研究  

Study on the preparation and UV curing properities of nano-SiO_2 hybrid materials

作　　者：颉俊宝 吴建兵[2,3] 马国章 郝晓刚[1] 

机构地区：[1]太原理工大学化学化工学院,山西太原030024 [2]山西省应用化学研究所,山西太原030027 [3]太原理工大学煤科学与技术教育部和山西省重点实验室,山西太原030024

出　　处：《热固性树脂》2013年第6期37-40,共4页Thermosetting Resin

基　　金：山西省"十二五"科技重大专项(20111101059);山西省青年自然科学基金(2010021013-2);山西省留学人员2012年重点项目(2012-08)资助

摘　　要：采用γ-巯丙基三甲氧基硅烷(KH-590)对纳米SiO2改性,制备了表面含—SH基团的纳米SiO2杂化材料。采用红外光谱(FTIR)对改性前后纳米SiO2的结构进行了分析表征,通过热失重(TGA)分析研究了改性纳米SiO2的接枝效果,研究了纳米SiO2杂化材料对紫外光固化涂层性能的影响,利用photo-DSC分析了改性纳米SiO2杂化材料对紫外光固化固化速率的影响。结果表明,含—SH基团的有机物接枝到纳米SiO2表面,接枝率为17.6%。与纳米SiO2相比,在SiO2表面引入—SH可有效克服光固化过程的氧阻效应,同时显著地提高了SiO2/紫外光固化杂化体系的C==C双键转化率、硬度和耐磨性能等。The nanosilica hybrid material with mercapto T - mercaptopropyl trimethoxy silane （ KH - 590 ）. The grafting group （ - SH） was prepared by modifying nano - SiO2 with structure of nano - SiO2 before and after modification and efficiency of modified nanosilica were characterized by FTIR and TGA respectively. The influences of nan- silica hybrid material on the properties of UV curing coatings was also investigated. The effect of modified nanosilica hybrid material on the UV curing speed was evaluated by photo - DSC technique. The results indicated that the mercapto group was successfully grafted onto the surface of the nanosilica and the grafting ratio was 17.6%. Com- pared with UV curing coatings incorporated with unnmodified nanosilica, the oxygen inhibition effect during UV cu- ring process was reduced at some degree with the mercapto group onto modified nanosilica. The conversion of the arcylate double bonds were increased significantly and the hardness and wear resistance of coatings were also im- proved.

关 键 词：纳米SIO2 KH-590 接枝改性 紫外光固化 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TQ630.1[化学工程—精细化工]