NIPPON GOMU KYOKAISHI
Print ISSN : 0029-022X
Search
Advanced search
OR
Browse
Search
Volume 59, Issue 9
Displaying 1-7 of 7 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
  • [title in Japanese]
    1986Volume 59Issue 9 Pages 481-520
    Published: 1986
    Released on J-STAGE: July 09, 2007
    DOIhttps://doi.org/10.2324/gomu.59.481
    JOURNAL FREE ACCESS
    Download PDF (3017K)
  • [title in Japanese]
    [in Japanese]
    1986Volume 59Issue 9 Pages 521-526
    Published: 1986
    Released on J-STAGE: July 09, 2007
    DOIhttps://doi.org/10.2324/gomu.59.521
    JOURNAL FREE ACCESS
    Download PDF (667K)
  • [title in Japanese]
    [in Japanese], [in Japanese], [in Japanese]
    1986Volume 59Issue 9 Pages 527-529
    Published: 1986
    Released on J-STAGE: July 09, 2007
    DOIhttps://doi.org/10.2324/gomu.59.527
    JOURNAL FREE ACCESS
    Download PDF (302K)
  • [title in Japanese]
    [in Japanese], [in Japanese], [in Japanese]
    1986Volume 59Issue 9 Pages 530-532
    Published: 1986
    Released on J-STAGE: July 09, 2007
    DOIhttps://doi.org/10.2324/gomu.59.530
    JOURNAL FREE ACCESS
    Download PDF (297K)
  • RADIATION-INDUCED DETERIORATION OF ISOBUTENE-ISOPRENE RUBBER VULCANIZATES
    Shinzo KOHJIYA, Yasushige MATSUMURA, Shinzo YAMASHITA, Tomochika MATSU ...
    1986Volume 59Issue 9 Pages 533-537
    Published: 1986
    Released on J-STAGE: July 09, 2007
    DOIhttps://doi.org/10.2324/gomu.59.533
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    Isobutene-isoprene rubber (IIR) was cured by sulfur/accelerator (Sx) or by p-quinone dioxime (GMF) to give rubber vulcanizates. Both vulcanizates were subject to solvent extraction to purify them, followed by the γ-ray irradiation in air at room temperature. The deterioration by γ-ray (0-20 Mrad) was investigated by the changes of tensile properties and the swelling behavior. The tensile strength and the tensile modulus decreased very much, but the elongation remained constant by the irradiation. The benzene-soluble fraction increased with dose. By the analysis using the Horikx theory, it was found that not the crosslinking point but the main chain suffered scission by the irradiation. Combining with the reported results on natural rubber and butadiene rubbers, a classificaion of the rubber vulcanizates according to their γ-ray sensitivity was proposed based on the changes of the modulus at 50-% elongation and the solubility behavior.
    View full abstract
    Download PDF (557K)
  • RADIATION-INDUCED DETERIORATION OF SYNTHETIC RUBBER VULCANIZATES CONTAINING CHLORINE
    Shinzo KOHZIYA, Yasushige MATSUMURA, Shinzo YAMASHITA, Tomochika MATSU ...
    1986Volume 59Issue 9 Pages 538-541
    Published: 1986
    Released on J-STAGE: July 09, 2007
    DOIhttps://doi.org/10.2324/gomu.59.538
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    Three chlorine containing rubbers, i.e., polychloroprene (CR), polyepichlorohydrin (CHR), and epichlorohydrin-ethylene oxide copolymer (CHC) were chosen, and the vulcanizates of them were prepared using ethylenethiourea. The three vulcanizates were subject to solvent extraction to purify them, followed by the γ-ray irradiation in air at room temperature. The deterioration by γ-ray (0-20Mrad) was investigated by the changes of tensile properties and solubility behaviors. CR vulcanizate suffered further crosslinking by the irradiation, consequently the increases of netowrk-chain density (νe), tensile modulus, and hardness were observed. On the other hand, CHR and CHC were found to be degradation-type rubbers, i.e., νe, modulus and hardness decreased by the irradiation. By the Horikx theory, they are estimated to undergo random scission in their main chain. Polymer-solvent interaction parameters were found 0.414 for CR, 0.336 for CHR, and 0.357 for CHC.
    View full abstract
    Download PDF (433K)
  • [title in Japanese]
    [in Japanese]
    1986Volume 59Issue 9 Pages 542-543
    Published: 1986
    Released on J-STAGE: July 09, 2007
    DOIhttps://doi.org/10.2324/gomu.59.542
    JOURNAL RESTRICTED ACCESS
    Download PDF (270K)
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top