Abstract:
Superhydrophobic composite was prepared via sol-gel process with TEOS as precursor, KH-550 as aggregated agent, KH-603 as adhesion promoter, HDTMS as modifier and TPU-95A resin as film-forming materials. The modified samples were characterized by static contact angle (CA), Fourier transform infrared spectrometry(FT-IR), particle size distribution and TEM. The test results showed that the static water contact angle of the coatings could reach to 152. when the mass ratio of KH-550 to KH-603 was 7: 3 and TEOS to TPU-95A was 27.76. Moreover, superhydrop composite was applied in texture and natural stone coatings, and rendered the coatings water repellency and antifouling properties.
Key words:
superhydrophobic,
silica sol,
hexadecyl trimethoxysilane,
composite
摘要： 采用正硅酸四乙酯(TEOS)以溶胶-凝胶法制备了粒径为 100 nm 的二氧化硅溶胶颗粒， 以氨丙基三乙氧基硅烷(KH-550)、γ-二乙烯三胺丙基甲基二甲氧基硅烷(KH-603)作为纳米颗粒团 聚体和附着力促进剂，使用十六烷基三甲氧基硅烷( HDTMS) 对二氧化硅溶胶进行疏水处理得到改性溶胶颗粒，再以热塑性聚氨酯(TPU-95A)树脂为粘结剂，制备超疏水复合涂层。 采用静态接触角 (CA)、红外光谱(FT-IR)、粒径分布、透射电镜(TEM)对改性颗粒和涂层进行表征。 结果表明:当 KH-550 与 KH-603 质量比为 7 ∶3，TEOS 与 TPU-95A 质量比为 27.76 ∶1时，水滴在超疏水复合涂层的静态接触角高达 152°，将此材料运用在真石、质感涂料上能够赋予涂层超疏水特性，使涂层具备耐沾污自清洁的功能。
关键词:
超疏水,
二氧化硅溶胶,
十六烷基三甲氧基硅烷,
复合材料
Zhan Junying, Lin Jinbin, Wang Yan, Lin Wei, Wu Jie. Preparation of Superhydrophobic Composite and Its Application in Natural Stone and Texture Coatings[J]. Paint & Coatings Industry, 2016, 46(1): 69-74.
詹俊英, 林金斌, 王 艳, 林 伟, 吴 洁. 超疏水复合材料的制备及其在真石、质感涂料中的应用研究[J]. 涂料工业, 2016, 46(1): 69-74.