NIPPON GOMU KYOKAISHI
Print ISSN : 0029-022X
Search
Advanced search
OR
Browse
Search
Volume 71, Issue 9
Displaying 1-11 of 11 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
  • [title in Japanese]
    [in Japanese]
    1998 Volume 71 Issue 9 Pages 521
    Published: 1998
    Released on J-STAGE: July 09, 2007
    DOIhttps://doi.org/10.2324/gomu.71.521
    JOURNAL FREE ACCESS
    Download PDF (105K)
  • Future Carbon Blacks and New Concept of Advanced Filler Dispersion
    Noboru Tokita, Meng Jiao Wang, Bin Chung, Khaled Mahmud
    1998 Volume 71 Issue 9 Pages 522-533
    Published: 1998
    Released on J-STAGE: July 09, 2007
    DOIhttps://doi.org/10.2324/gomu.71.522
    JOURNAL FREE ACCESS
    Download PDF (1836K)
  • [title in Japanese]
    [in Japanese]
    1998 Volume 71 Issue 9 Pages 534-540
    Published: 1998
    Released on J-STAGE: July 09, 2007
    DOIhttps://doi.org/10.2324/gomu.71.534
    JOURNAL FREE ACCESS
    Download PDF (1173K)
  • [title in Japanese]
    [in Japanese]
    1998 Volume 71 Issue 9 Pages 541-548
    Published: 1998
    Released on J-STAGE: July 09, 2007
    DOIhttps://doi.org/10.2324/gomu.71.541
    JOURNAL FREE ACCESS
    Download PDF (1006K)
  • ADVANCED INVESTIGATIONS INTO THE SILICA/SILANE REACTION SYSTEM
    U. Görl, A. Hunsche
    1998 Volume 71 Issue 9 Pages 549-561
    Published: 1998
    Released on J-STAGE: July 09, 2007
    DOIhttps://doi.org/10.2324/gomu.71.549
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    Silica in combination with bifunctional organosilanes (e.g. [Bis(3-triethoxysilylpropyl) tetrasulfane] =TESPT) have recently become more important in the tire application. Their use in tire treads as a replacement of carbon black leads to an improvement in rolling resistance and wet traction without loss in abrasion resistance. The requirements for the attainment of this combination of properties are that the triethoxysilyl groups of TESPT react with the silanol groups on the silica surface during compounding, and the polymer active groups react with the polymer during cure.
    The reaction of precipitated silica with this silane was investigated. The influence of various parameters (silane concentration, pH, moisture content) on the reaction type, degree of reaction and the reaction kinetics were considered. The results of the investigation obtained using 29Si-CP/MAS solid state NMR spectroscopy agree well with a horizontal reaction model in which a single siloxane bond is first formed with the silica surface (primary reaction), either directly or after (partial) hydrolysis of the silane. After having given off further ethanol, it is followed by condensation reactions between silanol groups of silane molecules which are already bound to the silica surface (secondary reaction).
    The data of the kinetic studies show a clear difference between the quick primary reaction and the slow secondary reaction. The energy of activation according to Arrhenius was determined for both reactions and was found to be much lower for the secondary reaction. Both reactions become quicker in the acidic and alkaline ranges respectively.
    The primary reaction accelerates up to a particular H2O content after which the rate remains constant. The secondary reaction on the other hand keeps on accelerating with rising H2O content.
    Modification with different silane concentrations showed a noticeably higher rate constant at low concentrations and a greater amount of ethanol formed per mol of silane.
    View full abstract
    Download PDF (1488K)
  • [title in Japanese]
    [in Japanese], [in Japanese]
    1998 Volume 71 Issue 9 Pages 562-570
    Published: 1998
    Released on J-STAGE: July 09, 2007
    DOIhttps://doi.org/10.2324/gomu.71.562
    JOURNAL FREE ACCESS
    Download PDF (983K)
  • [title in Japanese]
    [in Japanese]
    1998 Volume 71 Issue 9 Pages 571-577
    Published: 1998
    Released on J-STAGE: July 09, 2007
    DOIhttps://doi.org/10.2324/gomu.71.571
    JOURNAL FREE ACCESS
    Download PDF (889K)
  • [title in Japanese]
    [in Japanese]
    1998 Volume 71 Issue 9 Pages 578-582
    Published: 1998
    Released on J-STAGE: July 09, 2007
    DOIhttps://doi.org/10.2324/gomu.71.578
    JOURNAL FREE ACCESS
    Download PDF (564K)
  • [title in Japanese]
    [in Japanese]
    1998 Volume 71 Issue 9 Pages 583-587
    Published: 1998
    Released on J-STAGE: July 09, 2007
    DOIhttps://doi.org/10.2324/gomu.71.583
    JOURNAL FREE ACCESS
    Download PDF (512K)
  • [title in Japanese]
    [in Japanese]
    1998 Volume 71 Issue 9 Pages 588-594
    Published: 1998
    Released on J-STAGE: July 09, 2007
    DOIhttps://doi.org/10.2324/gomu.71.588
    JOURNAL FREE ACCESS
    Download PDF (774K)
  • [title in Japanese]
    [in Japanese]
    1998 Volume 71 Issue 9 Pages 596-597
    Published: 1998
    Released on J-STAGE: July 09, 2007
    DOIhttps://doi.org/10.2324/gomu.71.596
    JOURNAL RESTRICTED ACCESS
    Download PDF (265K)
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top