NIPPON GOMU KYOKAISHI
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Volume 87, Issue 11
Displaying 1-5 of 5 articles from this issue
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General Reviews
Advanced Course on Rubber Science and Technology
  • Structure and Property Relationship in Nano-filler Loaded Cross-linked Rubbers
    4. Structural Change of Carbon Black Networks in Cross-linked Rubber by Heat Treatment and Stretching
    Atsushi KATO, Yuko IKEDA, Yoshinobu ISONO
    2014 Volume 87 Issue 11 Pages 447-453
    Published: 2014
    Released on J-STAGE: May 22, 2015
    DOIhttps://doi.org/10.2324/gomu.87.447
    JOURNAL FREE ACCESS
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    An advantage of three-dimensional transmission electron microscopy is reviewed using our studies on effects of heat treatment and stretching on a variation of filler network of carbon black (CB) in rubber vulcanizates. Volume resistivity is discussed with characteristics of the CB network structure, and the CB network is suggested to be more stable in 80 parts per one hundred rubber by weight (phr) CB-filled natural rubber vulcanizate than in 50 phr CB-filled one. The stretching for 40 phr CB-filled styrene butadiene rubber vulcanizate cured under an elongation ratio by a two-step process shows aggregations of CB under low strains and collapses of CB network under high strains.
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  • Fracture Reveals Real Structure and Characters of Rubber
    Part 2: Fatigue Life of Rubber Elucidated with Rubber Elasticity Theory
    Yoshihide FUKAHORI
    2014 Volume 87 Issue 11 Pages 454-459
    Published: 2014
    Released on J-STAGE: May 22, 2015
    DOIhttps://doi.org/10.2324/gomu.87.454
    JOURNAL FREE ACCESS
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    S-N curve, the most effective and essential data to estimate a fatigue life of rubber is revealed with the rubber elasticity theory using material's characteristic constants, such as modulus, strain energy release rate, intrinsic flaws and the crack growth intensity coefficient. Mechanical properties of rubber are thus occupied strongly by rubber elasticity as well as viscosity over considerably high strain fields.
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Series of Symposium on Rubber Techniques
Technical Note
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