摘要： 为提高水泥基无机人造石防护涂层的耐沾污性和耐磨性，采用有机硅树脂为成膜物质，气相二氧化硅为填料，制备了无机人造石耐沾污涂层，通过典型污染液污染、水接触角和耐磨性测试及扫描电镜分析，评估了气相二氧化硅用量对涂层耐沾污性和耐磨性的影响。结果表明：气相二氧化硅的加入可以有效提高涂层的硬度和耐磨性，但由于其表面的不规则形貌和大量羟基的存在，导致其在较高的掺量下涂层表面润湿性增强且耐沾污性下降。当气相二氧化硅用量在 3%时，耐沾污涂层的综合性能最好，对甲紫和食醋污染液的色差ΔE<1. 5，负载 1 kg摩擦 4 000次仍可以保持完好外观和良好的耐沾污性。该涂层可以应用于无机人造石及其他水泥基装饰材料，解决水泥基装饰面材不耐沾污的问题。

关键词: 耐沾污涂层, 无机人造石, 耐沾污性, 耐磨性, 气相二氧化硅

Abstract: To improve the antifouling and wear-resistance of cement-based inorganicartificial stone protective coating，inorganic artificial stone anti-fouling coating was preparedusing organic silicone resin as the film-forming material and fumed silica as filler. The impactof fumed silica on the anti-fouling and wear-resistance of the coating was evaluated throughpollution of typical contaminated fluid，water contact angle，wear-resistance test and scanningelectron microscopy. The results indicated that the addition of fumed silica could effectivelyimprove the hardness and wear-resistance of the coating. However，due to its irregular surface morphology and the presence of a large number of hydroxyl groups，the surface wettability wasenhanced and the anti-fouling performance decreased at high doping level. When 3% fumed silica was added，the coating showed the best comprehensive performance，the color difference ΔE<1. 5 for methyl violet and vinegar was obtained，and a good appearance and good anti-fouling performance maintained after 4 000 times of heavy friction. This coating can be widelyused in inorganic artificial stones and other cement-based decorative materials to solve thefouling problem.

Key words: antifouling coating；inorganic artificial stone；antifouling performance；wear 

中图分类号: 

• TQ630. 4