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 58, Issue 12
Displaying 1-4 of 4 articles from this issue
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  • Preparation of Fine BaCO3 Particles in Water Solubilized by Nonionic Surfactants in Nonaqueous Media
    Misao KOIDE, Kijiro KON-NO, Ayao KITAHARA
    1985 Volume 58 Issue 12 Pages 699-706
    Published: December 20, 1985
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.58.699
    JOURNAL FREE ACCESS
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    The preparation of BaCO3 particles was carried out by bubbling of CO2 into the system solubilizing aqueous Ba(OH)2 solution in the isooctane or cyclohexane solution of polyoxyethylene nonylphenyl ether (average ethylene oxide unit : 4, 6, 8 or 10, the abbreviation is NP-4, -6, -8 or -10). In NP-4/isooctane system, the monodispersed rodlike BaCO3 particles were formed at any molar ratio of H2O to NP-4 at 0°C.
    Similar particles were also formed at 2.25 molar ratio of H2O to NP-4 in several concentration of aqueous Ba(OH)2 solution at 55°C. The monodispersed rodlike BaCO3 particles were also obtained at 4.5 molar ratio of H2O to NP-6 at several concentration of NP-6 in cyclohexane. The size of the rodlike BaCO3 particles prepared in NP-4, 6, 8 and 10/cyclohexane system decreased with increasing oxyethylene chain length of surfactants at 25°C.
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  • Paint Atomization by Means of Air Spray Gun
    Kazuyuki TACHI, Chikaaki OKUDA, Moriji KUROBE
    1985 Volume 58 Issue 12 Pages 707-717
    Published: December 20, 1985
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.58.707
    JOURNAL FREE ACCESS
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    In order to clarify the atomization phenomena of paint by means of an air spray gun, diameters of paint particles and spray patterns in the various spray conditions were measured for a modified gun. The gun has two separate air channels for atomizing and patterning. The atomizing air issues from the center hole and auxiliary holes of the air cap ; while the patterning air issues from the horn holes, also in the air cap. The results are summarized as follows :
    (1) Paint is atomized only by atomizing air, and not by patterning air. However, when both airs are jetted, increase of atomizing air flow rate makes spray pattern shrink and atomization is suppressed. Increase of patterning air flow rate makes spray pattern spread and atomization is promoted.
    (2) Paint atomization by means of an air spray gun is essentially similar to that obtained by a conventional twin-fluid atomizer. However, the former atomization is considerably suppressed by the combination of paint particles.
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  • Production Process and Application of Sequencially Biaxially Oriented Poval Film
    Ken NORO, Masuo MASUDA
    1985 Volume 58 Issue 12 Pages 718-724
    Published: December 20, 1985
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.58.718
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  • Color Charts
    Toshio HIRAI
    1985 Volume 58 Issue 12 Pages 725-731
    Published: December 20, 1985
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.58.725
    JOURNAL FREE ACCESS
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