发明名称 |
METHOD OF REINFORCING PHOTONIC-CRYSTALLINE FILMS BASED ON MONODISPERSED SPHERICAL SILICA PARTICLES |
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 65-75C 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 |
申请公布号 |
RU2399586(C1) |
申请公布日期 |
2010.09.20 |
申请号 |
RU20080152549 |
申请日期 |
2008.12.29 |
申请人 |
UCHREZHDENIE ROSSIJSKOJ AKADEMII NAUK INSTITUT GEOLOGII I MINERALOGII IM.V.S. SOBOLEVA SIBIRSKOGO OTDELENIJA RAN (INSTITUT GEOLOGII I MINERALOGII SO RAN, IGM SO RAN) |
发明人 |
KALININ DMITRIJ VALENTINOVICH;SERDOBINTSEVA VALENTINA VASIL'EVNA |
分类号 |
B82B1/00;C01B33/14;C01B33/18 |
主分类号 |
B82B1/00 |
代理机构 |
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