TQ171.624.2 98042700光学玻璃连续熔炼池炉液位自动控制及加料系统=The liquid level automatic control and automat-ic charging system of glass smelter[刊,中]/郑继荣,施洪昌,马兴尧(中国空气动力研究与发展中心.四川,安县(62265...TQ171.624.2 98042700光学玻璃连续熔炼池炉液位自动控制及加料系统=The liquid level automatic control and automat-ic charging system of glass smelter[刊,中]/郑继荣,施洪昌,马兴尧(中国空气动力研究与发展中心.四川,安县(622653))∥测控技术.—1997,16(6)展开更多
In this work, it is presented the synthesis and characterization of transparent and colorless organic-inorganic hybrid anti-graffiti protective materials obtained by sol-gel method. This type of materials is based on ...In this work, it is presented the synthesis and characterization of transparent and colorless organic-inorganic hybrid anti-graffiti protective materials obtained by sol-gel method. This type of materials is based on MTES （methyltriethoxysilane）, TPOZ （tetrapropoxide of zirconium） and PDMS （polydimethylsiloxane）. The synthesis has been carried out at 25, 35 and 45 ℃ in order to evaluate the role of temperature in the structure, microstructure and anti-graffiti behavior as well. The incorporation of zirconium within the organic modified silica network, of sols after being gelled and dried, is evident by a shoulder which increased with temperature situated at 950 cml （Si-O-Zr bonds）, and it is homogenously dispersed inside the matrix avoiding the formation of large ZrO2 precipitates. As the temperature increases, the hydrolysis and condensation reactions occur in more extension and thus, the obtained sols are more cross-linked and present more Si-O-Zr linkages. The promising anti-graffiti beha＇4ior of the protectNe hybrids was qualitatively determined being the spot removal higher than 90%.展开更多
文摘TQ171.624.2 98042700光学玻璃连续熔炼池炉液位自动控制及加料系统=The liquid level automatic control and automat-ic charging system of glass smelter[刊,中]/郑继荣,施洪昌,马兴尧(中国空气动力研究与发展中心.四川,安县(622653))∥测控技术.—1997,16(6)
文摘In this work, it is presented the synthesis and characterization of transparent and colorless organic-inorganic hybrid anti-graffiti protective materials obtained by sol-gel method. This type of materials is based on MTES （methyltriethoxysilane）, TPOZ （tetrapropoxide of zirconium） and PDMS （polydimethylsiloxane）. The synthesis has been carried out at 25, 35 and 45 ℃ in order to evaluate the role of temperature in the structure, microstructure and anti-graffiti behavior as well. The incorporation of zirconium within the organic modified silica network, of sols after being gelled and dried, is evident by a shoulder which increased with temperature situated at 950 cml （Si-O-Zr bonds）, and it is homogenously dispersed inside the matrix avoiding the formation of large ZrO2 precipitates. As the temperature increases, the hydrolysis and condensation reactions occur in more extension and thus, the obtained sols are more cross-linked and present more Si-O-Zr linkages. The promising anti-graffiti beha＇4ior of the protectNe hybrids was qualitatively determined being the spot removal higher than 90%.
