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  • aqueous dispersion of submicron-sized diamond particles for thermally conductive polyurethane coating

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 795
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     to improve corrosion resistance of steel sheet, polymeric resin coating has been practiced in steel industry. however, this method has a drawback to use because polymeric coating layer decreases the thermal conductivity. with an aim to enhance the thermal conductivity of the polymeric coating layer on steel sheet, submicron-sized diamond (μd) particles were employed as a thermally conductive material. various anionic and non-ionic surfactants were tested in order to stabilize heavy μd particles in aqueous phase. among them, 1-pyrenecarboxylic acid (pca) endowed the best stability to μd particles. the polyurethane-based coating layer containing pca-stabilized μd particles was applied on the steel sheet. the thermal conductivity of the coating layer effectively increased from 0.351 w/(m k) (0 wt% μd) to 0.434 w/(m k) (for 1.0 wt% μd). furthermore, the corrosion behavior was not observed upon salt spray test for 144 h.

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