Epoxy-modified silicone/Al-Sm2O3 composite coatings with epoxy-modified silicone and Al & Sm2O3 as adhesives and pigments were prepared through spraying method. The effect of heat treatment temperature and heat treatment time on the appearance, microstructure, near-infrared reflectivity, infrared emissivity and mechanical properties of the coating were systematically investigated. The results indicate that after heat treatment at 300 ℃ with 5 h, the appearance and microstructure of the coatings remain unchanged, and the emissivity and near-infrared reflectivity at 1.06 μm are as low as 0.607 and 64.7% respectively; hardness, adhesion strength, and impact strength are maintained at 4 H, 1 grade and 50 kg·cm respectively. After heat treatment at 250 ℃ with 100 h, the appearance and microstructure of the coatings remain unchanged, and the emissivity and near-infrared reflectivity at 1.06 μm are as low as 0.624 and 67.1% respectively; hardness, adhesion strength and impact strength are maintained at 4 H, 1 grade and 50 kg·cm respectively.


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    Title :

    Heat Resistance of Epoxy-modified Silicone/Al-Sm2O3 Composite Coatings


    Contributors:
    ZHANG Weigang (author) / XUE Lianhai (author) / WANG Yonggui (author) / LU Huixiao (author)


    Publication date :

    2017




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown




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