NIPPON GOMU KYOKAISHI
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Volume 42, Issue 7
Displaying 1-8 of 8 articles from this issue
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  • STUDIES ON THE ETHYLENE-PROPYLENE RUBBER BLENDS
    (II) INVESTIGATIONS OF THE CURE REAGENTS FOR BLEND RUBBER OF EPM WITH BUTYL RUBBER
    M. Imoto, Y. Minoura, K. Goto, H. Harada, K. Nishihira, H. Fujita, K. ...
    1969 Volume 42 Issue 7 Pages 489-493
    Published: July 15, 1969
    Released on J-STAGE: November 09, 2009
    DOIhttps://doi.org/10.2324/gomu.42.489
    JOURNAL FREE ACCESS
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    Cure reagents for butyl rubber were investigated. A desirable vulcanization was accomplished by DCP-S mixture reagents. These mixture reagents were applied to cure the blend rubber, EPR?IIR, as sulfur or brominated alkyl phenol resin.
    Physical properties of the blend rubber approximately depend on the blend ratio. The tensile properties can be improved and the hardness and abrasive can be reduced by blending IIR with EPR.
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  • STUDIES ON THE ETHYLENE-PROPYLENE RUBBER BLENDS
    (III) BLENDING OF THE EPDM WITH CHLORINE CONTAINING RUBBER, CHLORINATEDBUTYLRUBBER, NEOPRENE, AND CHLOROSULFONATED POLYETHYLENE
    M. Imoto, Y. Minoura, K. Goto, H. Harada, K. Nishihira, H. Fujita, K. ...
    1969 Volume 42 Issue 7 Pages 494-499
    Published: July 15, 1969
    Released on J-STAGE: November 09, 2009
    DOIhttps://doi.org/10.2324/gomu.42.494
    JOURNAL FREE ACCESS
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    Three experiments of the binary blends of EPDM with chlorine containing rubbers, chlorinated butyl rubber, polychloroprene and chlorosulfonated polyethylene, were carried out using the mixing roll.
    Dicumyl peroxide, sulfur and brominated alkyl phenol resin were used for the vulcanization of the blend rubbers. Some physical properties of the vulcanized blend rubbers are studied with respect to the blend ratio.
    Physical properties of EPDM/Cl-IIR vulcanized with DCP-S mixture were in proportion to the blend ratio, but those vulcanized with S or resin were not completely proportional to it.
    In EPDM/CR blend, the degradation of CR was induced by DCP, but any properties of rubber vulcanized with either DCP, S or resin were approximately proportional to the blend ratio. In EPDM/CSM blend, furthermore, the rubbers vulcanized with DCP-TRA mixture indicated a desirable performance at any ratio of blend. The relation of the properties to the blend ratio was linear.
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  • STUDIES ON RUBBER BLEND
    (PART V) BLEND OF POLYBUTADIENE AND STYRENE-BUTADIENE-STYRENE BLOCK COPOLYMER
    K. Satake, K. Maeda
    1969 Volume 42 Issue 7 Pages 500-505
    Published: July 15, 1969
    Released on J-STAGE: November 09, 2009
    DOIhttps://doi.org/10.2324/gomu.42.500
    JOURNAL FREE ACCESS
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    Blend of polybutadiene and styrene-butadiene-styrene block copolymer was studied.
    Unlike the usual case of blend of rubber and plastics in which physical properties change in “S” or “reversed S” shaped curves with blend ratio, the physical properties of this blend changed linearly or monotonously with blend ratio.
    This may be due to the fact that a firm continuous phase is not formed because of their good mutual solubility and consequent fine dispersion which has been ascertained by an observation with an electron microscope.
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  • STUDIES ON RUBBER BLEND
    (PART VI) BLEND OF STYRENE-BUTADIENE-STYRENE BLOCK COPOLYMER AND POLYSTYRENE
    K. Satake, K. Maeda
    1969 Volume 42 Issue 7 Pages 506-510
    Published: July 15, 1969
    Released on J-STAGE: November 09, 2009
    DOIhttps://doi.org/10.2324/gomu.42.506
    JOURNAL FREE ACCESS
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    Blend of styrene-butadiene-styrene block copolymer (styrene content : ca. 25 %) and polystyrene, uncured and cured by irradiation, was studied, paying attention to the change of physical properties against blend ratio. Phase separation test of blended solution and observation by an optical and an electron microscope were also carried out.
    Some physical properties of this blend, modulus, permanent compression set and resilience, were found to change in moderate “S” or “reversed S” shaped curves against blend ratio.
    It may be due to the forming of the continuous phase of either of the polymers, which are mixed with each other in a much larger order than in the case of the blend of polybutadiene and styrene-butadiene-styrene block copolymer.
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  • Erratum
    1969 Volume 42 Issue 7 Pages 510
    Published: 1969
    Released on J-STAGE: November 09, 2009
    DOIhttps://doi.org/10.2324/gomu.42.7_510
    JOURNAL FREE ACCESS
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  • Rubber Chem. Technol
    N. Bekkedahl
    1969 Volume 42 Issue 7 Pages 511-526
    Published: July 15, 1969
    Released on J-STAGE: November 09, 2009
    DOIhttps://doi.org/10.2324/gomu.42.511
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    1969 Volume 42 Issue 7 Pages 527-533
    Published: July 15, 1969
    Released on J-STAGE: November 09, 2009
    DOIhttps://doi.org/10.2324/gomu.42.527
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    1969 Volume 42 Issue 7 Pages 552-553
    Published: July 15, 1969
    Released on J-STAGE: November 09, 2009
    DOIhttps://doi.org/10.2324/gomu.42.552
    JOURNAL RESTRICTED ACCESS
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