TQ171.734 98010603纳米级微孔SiO<sub>2</sub>玻璃材料制备技术研究.Ⅰ.纳米级微孔SiO<sub>2</sub> 玻璃粉末的研制=Studies of the technologiesof preparing microporous silica glass materials.I.Preparat...TQ171.734 98010603纳米级微孔SiO<sub>2</sub>玻璃材料制备技术研究.Ⅰ.纳米级微孔SiO<sub>2</sub> 玻璃粉末的研制=Studies of the technologiesof preparing microporous silica glass materials.I.Preparation of microporous silicapowder[刊,中]/曾庭英,刘剑波,邱勇,宋心琦（清华大学化学系.北京（100084））,杜金环,陈柳生（中科院化学研究所.北京（100080））//功能材料.—1997,28（3）.—268—271在研究了不同酸碱催化剂、不同化学添加助剂、不同热处理工艺对以正硅酸乙脂（TEOS）为原料。展开更多
A kind of modified epoxy resins was obtained by condensation of epoxy resin with silicic acid tetraethyl ester（TEOS） and nano-SiO2. The reactions were performed with hydrochloric acid as a catalyst at 63 ℃. The str...A kind of modified epoxy resins was obtained by condensation of epoxy resin with silicic acid tetraethyl ester（TEOS） and nano-SiO2. The reactions were performed with hydrochloric acid as a catalyst at 63 ℃. The structure, thermal stability and morphological characteristics of the modified epoxy resins were studied through infrared spectra（FT-IR） analysis, thermogravimetric（TG） analysis and scanning electron microscopy respectively. It has been found from the IR and TG study that modified epoxy resins have greater thermal stability than epoxy resins, and its thermal stability has been improved by the formation of inter-crosslinked network structure. The modified epoxy resins exhibit heterogeneous morphology and heterogeneity increases with more TEOS feeding, which in turn confirms the formation of inter-crosslinked network structure in modified epoxy resins.展开更多
文摘TQ171.734 98010603纳米级微孔SiO<sub>2</sub>玻璃材料制备技术研究.Ⅰ.纳米级微孔SiO<sub>2</sub> 玻璃粉末的研制=Studies of the technologiesof preparing microporous silica glass materials.I.Preparation of microporous silicapowder[刊,中]/曾庭英,刘剑波,邱勇,宋心琦（清华大学化学系.北京（100084））,杜金环,陈柳生（中科院化学研究所.北京（100080））//功能材料.—1997,28（3）.—268—271在研究了不同酸碱催化剂、不同化学添加助剂、不同热处理工艺对以正硅酸乙脂（TEOS）为原料。
文摘A kind of modified epoxy resins was obtained by condensation of epoxy resin with silicic acid tetraethyl ester（TEOS） and nano-SiO2. The reactions were performed with hydrochloric acid as a catalyst at 63 ℃. The structure, thermal stability and morphological characteristics of the modified epoxy resins were studied through infrared spectra（FT-IR） analysis, thermogravimetric（TG） analysis and scanning electron microscopy respectively. It has been found from the IR and TG study that modified epoxy resins have greater thermal stability than epoxy resins, and its thermal stability has been improved by the formation of inter-crosslinked network structure. The modified epoxy resins exhibit heterogeneous morphology and heterogeneity increases with more TEOS feeding, which in turn confirms the formation of inter-crosslinked network structure in modified epoxy resins.
