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 97, Issue 1
Displaying 1-4 of 4 articles from this issue
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Special Interview Expectations for Future Researchers
Original Research Paper
  • Implanting of Metal Nanoparticles into Resin Using Reducing Function of Resin
    Toshio SAKAI, Takahisa WATANABE, Masamune TOKUDA
    2024 Volume 97 Issue 1 Pages 5-11
    Published: January 20, 2024
    Released on J-STAGE: January 26, 2024
    DOIhttps://doi.org/10.4011/shikizai.97.5
    JOURNAL FREE ACCESS
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    Implanting of metal nanoparticles into resins using a reducing function in the resin was investigated to develop a methodology for combining metals and resins. We found that metal nanoparticles were implanted into nylon 66 or polyurethane in a heated aqueous metal salt solution. This indicates that metal ions penetrate into nylon 66 or polyurethane in the aqueous metal salt solution, and metal nanoparticles are formed through the reduction of those metal ions by secondary amines in the nylon 66 or polyurethane. In addition, the implanting of metal nanoparticles into nylon 66 or polyurethane was enhanced in a heated metal salt ethanol solution. Furthermore, the metal nanoparticles were implanted in nylon 66 with different shapes (sphere, tube, plate, and wire). So, the combination of metals and resins is achieved by implanting metal nanoparticles into resins through the formation of metal nanoparticles by reduction of metal ions using a reducing function in the resin such as a secondary amine.

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Serial Lecture
  • Carbody Painting Technologies that Enables Resin Outer Panel Painting (About Visualization of Color Variation and Line Mounting)
    Yoshiaki KANZAWA, Shinjiro NAGANO
    2024 Volume 97 Issue 1 Pages 17-26
    Published: January 20, 2024
    Released on J-STAGE: January 26, 2024
    DOIhttps://doi.org/10.4011/shikizai.97.17
    JOURNAL RESTRICTED ACCESS
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    With the goal of achieving SGDs and carbon neutrality, which aims to create a sustainable society, automobile production, especially the painting process, which has a large environmental impact, is a major issue.

    In addition to reducing the environmental burden similar to SCOPE 1 and 2 such as CO2, VOC, waste, and water, which are problems in own processes, when considering reducing the environmental burden of SCOPE 3 during product use, one solution is to reduce the weight of the product. It is necessary to consider a process that assumes resin outer panels.

    However, painting resin exterior panels has a problem with color consistency, and its adoption is limited.

    When adopting PP fenders and back doors, we visualized the process by which aluminum orientation is determined in order to obtain clues as to the cause of color mismatch (color variation) between steel plate coating and resin coating. Based on the results, we will present hints for painting process management.

    We would also like to introduce the painting line configured to produce our “Copen”, which uses a resin exterior panel, and hope that this will help you think about the production process to realize a product with a resin exterior panel.

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