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以白色硅酸盐水泥(白水泥)为改性填料,利用白水泥产生的C-S-H凝胶等产物,对氟碳涂料进行改性,并探究白水泥的掺量和水化龄期对氟碳涂料性能的影响。实验结果表明:白水泥改性水性氟碳涂料时,白水泥需要水化3 d以上才能达到良好的改性效果。白水泥水化产生的C-S-H凝胶等水化产物均匀分散在氟碳树脂分子网络中,使涂料硬度、耐碱性、耐热性等性能获得改善。掺入4%~8%白水泥能够获得较好的改性效果,当白水泥掺量达到10%时,涂膜开裂,涂料的各项性能劣化。白水泥改性水性氟碳涂料与水的接触角随水泥掺入量的增加明显降低。
With white Portland cement (white cement) as a modified filler, the use of white cement produced CSH gel and other products, fluorocarbon coatings were modified and to explore the amount of white cement and hydration age fluorocarbon coatings The impact of performance. The experimental results show that when white cement is modified with waterborne fluorocarbon coating, white cement needs to be hydrated for more than 3 days to achieve good modification effect. The hydration products such as C-S-H gel produced by the white cement hydration are uniformly dispersed in the molecular network of the fluorocarbon resin, so that the properties of the coating such as hardness, alkali resistance and heat resistance are improved. Incorporation of 4% ~ 8% white cement can get good modification effect, when the white cement content reaches 10%, the coating cracking, paint performance degradation. The contact angle of white cement modified waterborne fluorocarbon coating with water decreased obviously with the increase of cement content.