Journal of the Japan Society of Colour Material
Online ISSN : 1883-2199
Print ISSN : 0010-180X
ISSN-L : 0010-180X
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Volume 70, Issue 6
Displaying 1-7 of 7 articles from this issue
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  • Crystal Analysis and Magnetic Characteristics of Black-Iron-Oxide-Coated Mica
    Tamio NOGUCHI, Isao SAKAMOTO
    1997 Volume 70 Issue 6 Pages 359-368
    Published: June 20, 1997
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.70.359
    JOURNAL FREE ACCESS
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    The crystal structure of black iron oxide which was deposited on a thin filler substrate such as mica by homogeneous precipitation using an aqeous solution dissolved urea, an oxidizing agent, and ferrous salts was investigated by Mössbauer spectroscopy and SEM. As a result, it was confirmed that the particle shape, the crystal structure, and the color differed with the thin filler substrate used.
    Black-iron-oxide-coated mica having interference color was prepared by the coating of the fine particle of black iron oxide formed from homogeneous precipitation using an aqueous solution dissolved urea, ferric salts, and ferrous salts on a thin filler substrate.
    From the relationship between the color and the crystal structure, it was confirmed that the interference color differed with the formation ratio of Fe2O3 to γ-Fe2O3 in the black iron oxide on thin-filler substrate.
    From the investigation of the magnetic characteristics, it was confirmed that the black-ironoxide-coated mica can be applied as a magnetic color material.
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  • Fine Titanium Dioxide Particles Modified with Dodecyl Groups-The reactivity and its characteristics-
    Tsuneo SUHARA, Hiroshi FUKUI, Kunio ESUMI
    1997 Volume 70 Issue 6 Pages 369-377
    Published: June 20, 1997
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.70.369
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    Fine titanium dioxide was modified with dodecyl groups, and the products were characterized in various respects. 1, 3, 5, 7-Tetramethylcyclotetrasiloxane (TMCTS) was deposited on fine titanium dioxide at 80°C by chemical vapor deposition, which was polymerized catalytically to form poly (methylsiloxane) (PMS) layer on the surface. Fine titanium dioxide coated with TMCTS was prepared in five varieties with different amounts of TMCTS (PMS m, m : 10, 15, 20, 30, and 40). Fine titanium dioxide modified with dodecyl groups (Dm, m : 10, 15, 20, 30, and 40) was synthesized from PMS-TiO2 by hydrosilylation with 1-dodecene. The contact angle showed a tendency to increase with increasing added TMCTS or dodecene. Furthermore, in the case of the powder-oil disperse system, the Bingham yield value increased with increasing added dodecene on the dispersed particles and the coagulation force between particles.
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  • Preparation of Porous Inorganic Oxides Capsules Utilizing the Interfacial Gelling Reaction. III
    Porous Titania Hollow Capsule
    Hideki SAKAI, Takuya KAWA, Toshiaki KAKIHARA, Katsuhiro NISHIYAMA, Mas ...
    1997 Volume 70 Issue 6 Pages 378-385
    Published: June 20, 1997
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.70.378
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    Porous titania hollow capsules were prepared by making organic/inorganic hybrid gel membranes first and then sintering them, and the preparation conditions and the properties of the capsules were investigated. Use of the interfacial gelling reaction of N-lauroyl-L-glutamic acid-α, γ-di-n-butylamide (LGBA), an oil gelling agent, enabled us to prepare porous titania hollow capsules. Addition of drying control chemical additive (DCCA) to water was found to effectively prevent crack formation in the products. When ethylene glycol was used as DCCA, it retarded the hydrolysis and polycondensation of the metal alkoxide in the presence of base catalyst. It was also found that the crystal-form composition of porous titania hollow capsules changes with the temperature of heat treatment, namely, anatasetype of the titania is obtained at 600°C, but its rutile-type is obtained at 1000°C.
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  • Application of Computer Graphics in Rolling Stock Artistic Design
    Hiroaki OKANO
    1997 Volume 70 Issue 6 Pages 386-392
    Published: June 20, 1997
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.70.386
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  • Pyrrolepyrrole Pigments and their Electronic Applications
    Jin MIZUGUCHI
    1997 Volume 70 Issue 6 Pages 393-403
    Published: June 20, 1997
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.70.393
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  • Science for Urushi
    Its History of Research and Recent Technology
    Hiroshi OYABU
    1997 Volume 70 Issue 6 Pages 404-413
    Published: June 20, 1997
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.70.404
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  • Gravure Inks for Building Takashi
    Takashi ETSUKA
    1997 Volume 70 Issue 6 Pages 414-419
    Published: June 20, 1997
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.70.414
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