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 88, Issue 4
Displaying 1-5 of 5 articles from this issue
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Digest
  • Color Materials for Digital Textile
    Koromo SHIROTA
    2015 Volume 88 Issue 4 Pages 95-100
    Published: April 20, 2015
    Released on J-STAGE: July 20, 2015
    DOIhttps://doi.org/10.4011/shikizai.88.95
    JOURNAL FREE ACCESS
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    “Digital Textile” is a dyeing method to print on cloth directly without using plates such as screens. Since the printing processes are done by inkjet technology, Digital Textile is also called Inkjet Textile. Due to the influence of drainage regulations in the major centers of the dyeing industry such as China, and market demands for small lot prints, the spread of Digital Textile is now accelerating. In the present report color materials for Digital Textile are described. Firstly, the relationship between cloth type and dye type, and pre-and post treatment of Digital Textile are described, followed by the main points of reactive and disperse dyes, ink formulation and current technical problems. Finally, predictions are made regarding the future trend of coloring material for Digital Textile, referring to the exhibition of ITMA Asia held in June, 2014.
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Current Topics
  • Metal-Like Lustrous Coatings Prepared Without Using Metals
    Katsuyoshi HOSHINO
    2015 Volume 88 Issue 4 Pages 101-105
    Published: April 20, 2015
    Released on J-STAGE: July 20, 2015
    DOIhttps://doi.org/10.4011/shikizai.88.101
    JOURNAL FREE ACCESS
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    Quite recently, we have prepared anion-doped thiophene-based oligomers and found that their cast films exhibited gold-like luster. This review describes the method for the preparation of the oligomers, and the physicochemical properties of the coating films such as external appearance, spectroscopic characteristics (reflection, transmission, and absorption spectral characteristics), film structure, and aging stability in the air.
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  • Size-Controllable Synthesis of Inorganic Nanophosphors
    Satoru TAKESHITA
    2015 Volume 88 Issue 4 Pages 106-110
    Published: April 20, 2015
    Released on J-STAGE: July 20, 2015
    DOIhttps://doi.org/10.4011/shikizai.88.106
    JOURNAL FREE ACCESS
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    Inorganic nanophosphors can be used in wavelength-converting devices that require high transparency in the visible region. Control of the phosphor particle size in the 10 - 50 nm range is essential from the aspects of light scattering intensity and specific surface area. Low-temperature wet chemical approaches, such as solvothermal and polyol methods, are suitable to prepare well-dispersed and size-controlled nanoparticles. The author summarizes factors determining the size of ceramics nanoparticles prepared by wet chemical processes, and introduces several examples for size-controllable synthesis of nanophosphors.
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Serial Lecture
  • Adhesion to Wood
    Shinobu YAMAMOTO
    2015 Volume 88 Issue 4 Pages 111-116
    Published: April 20, 2015
    Released on J-STAGE: July 20, 2015
    DOIhttps://doi.org/10.4011/shikizai.88.111
    JOURNAL FREE ACCESS
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    In Japan, wood has been replaced by concrete or plastics as the major building materials. Woods such as Japanese cedar, Japanese cypress and larch were planted several decades ago and we are facing a problem of surplus wood feedstocks. Laws relating to the use of wood for public buildings have been enacted for the purpose of wood use and the proper management of forest resources. The present paper introduces the basis and practical aspects of wood adhesion which helps the promotion of wood usage. The mechanism of adhesion to wood is classified as mechanical adhesion based on a drop-anchor effect. Therefore it is important to smooth the surface of wood before use. The main adhesives used for woods are poly(vinylacetate) emulsions. In addition, processed wood, trend item; laminated wood, CLT, and flooring are discussed.
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  • Lead and Chromium Free Anti-Corrosive Pigments
    Minoru FUKUCHI
    2015 Volume 88 Issue 4 Pages 117-120
    Published: April 20, 2015
    Released on J-STAGE: July 20, 2015
    DOIhttps://doi.org/10.4011/shikizai.88.117
    JOURNAL FREE ACCESS
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    As industrialization has proceeded metals have found use in a wide range of products but at the same time the costs associated with corrosion have steadily increased. The major methods of corrosion prevention are the use of metal alloys, electrolytic protection, chemical conversion and painting. Especially, anti-corrosive painting has advantages of low cost and simplicity. In Japan lead and chromium based pigments have been commercialized for more than 100 years. However the trend of anti-corrosive pigments has recently turned towards lead-free and chromium-free pigments due to demands for global environment preservation. As a result zinc phosphate and zinc phosphite type pigments have become leading alternatives to lead and chromium type pigments. The present article introduces the mechanisms of corrosion and characteristics of anti-corrosive pigments.
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