TiO_2/MQ硅树脂反应型杂化材料的制备及其性能研究  

Preparation and Properties of TiO_2/MQ Silicone Resin Reactive Hybrid Material

作　　者：向洪平[1] 葛建芳[1] 胡新嵩 崔少伟[1] 程少辉[1] 

机构地区：[1]仲恺农业工程学院化学化工学院,广州510225 [2]广州高士实业有限公司,广州510450

出　　处：《有机硅材料》2011年第6期375-379,共5页Silicone Material

基　　金：仲恺农业工程学院校级科研基金项目(G3100098);校级研究生创新基金项目(H1410009)

摘　　要：以钛酸丁酯、MQ硅树脂为原料,利用溶胶-凝胶法制备了TiO2/MQ硅树脂无机-有机杂化材料。采用傅里叶变换红外光谱(FT-IR)、紫外-可见光谱、热重分析仪(TGA)、X-射线衍射仪(XRD)、扫描电镜(SEM)表征杂化材料的结构与性能。结果表明:杂化材料中存在Ti—O—Si共价键合;杂化材料对可见光吸收极低,对紫外光吸收极强。随着TiO2含量的增加,杂化材料的热稳定性提高。当加入MQ硅树脂后,TiO2结晶过程受到阻碍,杂化材料为无定形态,颗粒尺寸约50 nm左右,但在800℃下退火2h后,转变为锐钛矿相。TiO2/MQ silicone resin inorganic-organic hybrid materials were prepared via sol-gel technique from tetra-n-butyl titanate and MQ silicone resin. The samples were characterized by fourier transform infrared spectroscopy （FT-IR）, UV-visible spectrometer, thermo gravimetric analysis （TGA）, X-ray diffraction （XRD） and scanning electron microscope （SEM）. The results showed that Ti--O--Si covalent bond existed in the hybrid materials. The hybrids were highly transparent in visible light wavelength region, and yet had high absorption in UV range. The thermal stability of the hybrid particles were greatly improved with the increasing titania amount. The hybrid materials were amorphous and the average particle size around 50nm in the presence of MQ silicone resin which hindered the crystallization of titaina. After the hybrids were annealed at 800 centigrade for 2 hours, titania became the anatase type.

关 键 词：二氧化钛 MQ硅树脂 溶胶-凝胶法 杂化材料 纳米复合材料 

分 类 号：TB383.1[一般工业技术—材料科学与工程]