The present invention relates to an environmental friendly high water and oil repellent nano SiO2 material, preparation and application, structure of the material is prepared including: (1) SiO2 nano wave dispersion in solvent, and oxygen in nitrogen atmosphere, adding amino silane coupling agent, reflux for 2 - 20 hours after washing with ethanol, vacuum drying, amino functionalized nano SiO2; (2) in addition to water and oxygen, nitrogen, amino functionalized nano SiO2 ultrasonic dispersed in anhydrous F113 solvent, adding three triethylamine, adding perfluoropolyether acyl fluoride terminated, reflux for 2 to 20 hours after washing, ethanol, vacuum drying, obtained fluoride nano SiO2 materials of water and oil repellent. The material of the invention is easy to degrade, can be highly water repellent and oil free, and has little environmental pollution; the preparation is simple and suitable for large-scale production; the utility model is applied to self-cleaning surfaces, liquid lossless transportation and other fields.
【技术实现步骤摘要】
本专利技术属纳米Si02材料、制备和应用领域,特别是涉及一种环境友好高度拒水拒油纳米Si(^材料、制备和应用。
技术介绍
超疏水固体表面(即表面与水的接触角大于150° ,且水滴在表面上的滚动角小 于10° )具有防水、防雪、自清洁等特点,在自清洁建筑材料、外墙涂料、纺织品、无损失液 体运输管道及防潮包装材料等领域具有广泛应用,一直备受关注。受植物叶面,尤其是荷叶 表面自清洁效应的启发,研究表明,固体表面具有超疏水性必须具备两个条件l)低表面 能物质,2)适当的粗糙度。 大量研究表明,如果低面能物质含有长链含氟烷烃链(CnF2n+1,n > 8),由于氟链极 低的表面自由能,固体表面不仅有疏水性还具有疏油性,极大的扩大了材料的应用范围。然 而,长链全氟烷烃链具有生物不可降解性,随食物链传递,会在动物及人体内富集和放大到 很高浓度。长链含氟化合物重要原料全氟辛烷磺化物能够引起肝、神经及免疫系统中毒,严 重者甚至可致癌,特别是新生儿的内分泌系统更容易受到破坏,会对人类及其后代的健康 产生十分严重的后果,已经被禁用。 因此易生物降解的材料还有待进一步的研究。专 ...
【技术保护点】
一种环境友好高度拒水拒油的氟化纳米SiO↓[2]材料,该材料的结构式为: *** 其中***为(CH↓[2])↓[3], R↓[f]为CF↓[3]CF↓[2]CF↓[2]O[CF(CF↓[3])CF↓[2]O]↓[n]CF(CF↓[3])-(0<n≤3)。
【技术特征摘要】
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