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METHOD OF REINFORCING PHOTONIC-CRYSTALLINE FILMS BASED ON MONODISPERSED SPHERICAL SILICA PARTICLES
METHOD OF REINFORCING PHOTONIC-CRYSTALLINE FILMS BASED ON MONODISPERSED SPHERICAL SILICA PARTICLES
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机译:基于单球形二氧化硅颗粒的光子晶体薄膜的增强方法
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摘要
FIELD: chemistry.;SUBSTANCE: invention can be used in chemical and electronic industries. Photonic-crystalline films based on monodispersed spherical silica particles are reinforced by immersing ready films into an alcohol nanosol of silica for a short period of time and then drying. The nanosol is prepared by mixing tetraethoxysilane with an aqueous solution of HCl at pH 1.5 and ethanol in ratio of 3.5:1:2.5. The mixture is held at 65-75°C for 1-2 hours. Cetyltrimethylammonium chloride is then added in amount of 200 mg per 3 ml of the sol. Before immersing the substrate with the photonic-crystalline film, the sol is diluted with ethanol in ratio of 1:10.;EFFECT: invention enables to obtain a photonic-crystalline film with Moh's hardness of 3,5-4 and mechanical strength comparable with strength of glass-like silica gel.;2 cl, 1 ex
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机译:领域:化学。;物质:发明可用于化学和电子工业。通过将短时薄膜浸入二氧化硅的醇纳米溶胶中短时间,然后干燥,可以增强基于单分散球形二氧化硅颗粒的光子晶体薄膜。通过将四乙氧基硅烷与pH为1.5的HCl水溶液和乙醇以3.5:1:2.5的比例混合来制备纳米溶胶。将该混合物在65-75℃下保持1-2小时。然后以每3毫升溶胶200毫克的量加入十六烷基三甲基氯化铵。在将衬底浸入光子晶体膜之前,用乙醇按1:10的比例稀释溶胶;效果:本发明能够获得莫氏硬度为3,5-4且机械强度与Moh相当的光子晶体膜。玻璃状硅胶的强度。; 2 cl,1 ex
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