ゴムと亜鉛の接着に関する研究　ＩＩＩ　　コバルト塩を添加したゴムと亜鉛の接着における加硫促進剤の影響

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タイトル別名
  • STUDIES ON BONDING RUBBER TO METALLIC ZINC (III)
  • コバルトエン オ テンカシタ ゴム ト アエン ノ セッチャク ニ オケル カ

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抄録

Vulcanization and adhesion to zinc plate of NR compounds with cobalt naphthenate or cobalt stearate was studied with many accelerators. NR Compounds with the cobalt salts were vulcanized similar to those without the salts by CBS, MBT, and other thiazole accelerators. The vulcanized rubber compounds produced a high adhesive strength to zinc plate. Addition of cobalt naphthenate to NR compounds gave higher adhesion than that of cobalt stearate. In the presence of cobalt naphthenate, polysulfidic crosslinks reduced with the curing time at 160°C and monosulfidic ones increased reversely, and adhesion strength decreased promptly at the temperture. The ultra-accelerators such as ZnMDC, TMTD, and NaMDC reacted with the cobalt salts under formation of a complex which was inactive to cure and the remainder of the cobalt naphthenate acted as a weak promotor for crosslinking. NR compounds accelerated with DPG did not adhere to zinc plate. It was found by ESCA that zinc surface of good adhesion was composed of zinc oxide, zinc sulfide, and zinc sulfate and the surface of poor adhesion was composed of zinc oxide and zinc sulfide.

収録刊行物

  • 日本ゴム協会誌

    日本ゴム協会誌 57 (9), 544-552, 1984

    一般社団法人 日本ゴム協会

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