Interfacial Molecular Motion and Chemical Characteristics of Polymer Jointed to Metal by Chemical Bonding

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  • Deng Xueliang
    Department of Frontier Materials and Function Engineering, Graduate School of Engineering, Iwate University Sulfur Chemical Institute
  • SANG Jing
    Department of Frontier Materials and Function Engineering, Graduate School of Engineering, Iwate University
  • AISAWA Sumio
    Department of Frontier Materials and Function Engineering, Graduate School of Engineering, Iwate University
  • MORI Katsuhito
    Sulfur Chemical Institute
  • HIRAHARA Hidetoshi
    Department of Frontier Materials and Function Engineering, Graduate School of Engineering, Iwate University

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  • アルミニウムとシリコンゴム複合体の界面でのゴム分子運動特性と化学結合に関する研究

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<p>The adhesion of metals and polymers has wide industrial applications; interface bonding and adhesion mechanisms are essential for determining the final properties of polymer composites. A triazine-based silane coupling agent was used to treat aluminum and polydimethylsiloxane (PDMS) to form metal-polymer interface bonds through chemical bonding. Bonding strength tests, swelling experiments, rubber curing degree measurements, and dynamic viscoelastic analyses were performed on Al/PDMS samples of different thicknesses to investigate the molecular motion of the formed Al/PDMS interface. The influence of the PDMS thickness on the molecular motion of joint was studied. The bonded Al/PDMS interface had a higher degree of cooperation of molecular motion corresponding to stress relaxation than that of unbonded rubber, whose molecules restrain molecular motility. Swelling experiments revealed that only a specific thickness of the PDMS can chemically bond with Al, and below this thickness, the solvent, toluene, cannot penetrate the bonding interface. This study provides basic insights about metal-polymer interface mechanisms at a molecular level.</p>

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