Materials life
Online ISSN : 2185-7024
Print ISSN : 0915-3594
ISSN-L : 0915-3594
Volume 1, Issue 2
Displaying 1-7 of 7 articles from this issue
  • Yasushi WATANABE
    1989 Volume 1 Issue 2 Pages 58-61
    Published: September 15, 1989
    Released on J-STAGE: April 19, 2011
    JOURNAL FREE ACCESS
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  • Yukio WATANABE
    1989 Volume 1 Issue 2 Pages 64-72
    Published: September 15, 1989
    Released on J-STAGE: April 19, 2011
    JOURNAL FREE ACCESS
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  • Tadateru NISHIURA
    1989 Volume 1 Issue 2 Pages 73-77
    Published: September 15, 1989
    Released on J-STAGE: April 19, 2011
    JOURNAL FREE ACCESS
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  • Hideomi HIGUCHI
    1989 Volume 1 Issue 2 Pages 78-81
    Published: September 15, 1989
    Released on J-STAGE: April 19, 2011
    JOURNAL FREE ACCESS
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  • Yoichiro MITSUYUKI, Yoshiyuki TOKUDA
    1989 Volume 1 Issue 2 Pages 82-86
    Published: September 15, 1989
    Released on J-STAGE: April 19, 2011
    JOURNAL FREE ACCESS
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  • Takaaki OHTAKE, Yoshiko HIRATA, Kuniyuki HARADA, Masashi IDE
    1989 Volume 1 Issue 2 Pages 87-95
    Published: September 15, 1989
    Released on J-STAGE: April 19, 2011
    JOURNAL FREE ACCESS
    Since factor of automobile interior materials degradation are mainly influence of the heat and the UV light, we will describe about the thermal degradation and photodegradation in this report.The variety of life (Time to elongation 20 %) of ABS/PVC/NBR leather for the instrument panel pad are spread from 150 hours to 800 hours at 110°C. Physical properties among many surface coverings collected from sold cars in the Japanese domestic market and degraded ones by accelerated heat aging test were compared by us and as the result. We can estimate that the degradation for one year in actual condition is equivalent to the degradation in accelerated heat aging test for 96 hours at 110°C. Regarding the light fastness, we examined rate of discoloration of the seat which is exposed to the direct sun by using blue scale specified in JIS L 0841. As the result of comparison among exposure test in an actual car and various accelerated tests, we can estimate that one year of exposure on an actual car is equivalent to (1), 3 months of exposure on under-glass exposure test and (2) 200 hours of exposure on xenon arc weather meter. A xenon arc weather meter in the test of seat upholstery has high acceleration and reproducibility.
    Therefore, it can be said that in case of the test with the xenon weather meter, correlation between the test and the actual environment is very high.
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  • Fujio OHISHI, Takao YOSHIKAWA, Jun NAKANO
    1989 Volume 1 Issue 2 Pages 96-103
    Published: September 15, 1989
    Released on J-STAGE: April 19, 2011
    JOURNAL FREE ACCESS
    High performance engineering plastics (named “Super Engineering Plastics” : SEP in Japan) have been expected as practical materials, however data on their torsional performance and durability are particularly scanty. We studied PEI and PAMXD6 (semiaromatic nylon) in addition to liquid crystalline plastics, PPS, PES and PEEK reported1) previously, comparing with Nylon 66-G.F.
    The following properties were measured.
    1) Thermal property. 2) Torsional properties. 3) Solvent stress cracking properties.
    4) Weatherability. 5) Fatigue properties. 6) Dynamic rheological properties.
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