Choi Myeon-Cheon, Sung Giju, Nagappan Saravanan, Han Mi-Jeong, Ha Chang-Sik
Department of Polymer Science and Engineering, Pusan National University, Busan 609-735, Republic of Korea.
J Nanosci Nanotechnol. 2012 Jul;12(7):5788-93. doi: 10.1166/jnn.2012.6311.
In this work, we synthesized polyimide/silica hybrid materials via sol-gel method using a fluorinated poly(amic acid) silane precursor and a variety of perfluorosilane contents. We studied the influence of a hybrid coating film with the following characteristics; hydrophobicity, oleophobicity, optical transparency, and surface hardness of the coating films. The hybrid coatings with the fluorosilane contents up to 10 wt% are optically transparent and present good thermal stability with a degradation temperature of > 500 degrees C as well as a glass transition of > 300 degrees C. Both water contact angle and oil contact angle increase rapidly with introducing small amount of the fluorosilane in the hybrids and reaches the maximum of 115 degrees and 61 degrees, respectively. The hardness of the hybrid coatings increases up to 5H with an increase of the FTES content in the hybrids. These colorless, transparent, and thermally stable hybrid materials could be suitable for applications as anti-stain coatings.
在这项工作中，我们使用氟化聚（酰胺酸）硅烷前驱体和各种全氟硅烷含量，通过溶胶 - 凝胶法合成了聚酰亚胺/二氧化硅杂化材料。我们研究了具有以下特性的杂化涂膜的影响：涂膜的疏水性、疏油性、光学透明度和表面硬度。含氟硅烷含量高达10 wt%的杂化涂层具有光学透明性，呈现出良好的热稳定性，降解温度>500℃，玻璃化转变温度>300℃。随着在杂化物中引入少量氟硅烷，水接触角和油接触角均迅速增加，分别达到最大值115°和61°。随着杂化物中FTES含量的增加，杂化涂层的硬度增加到5H。这些无色、透明且热稳定的杂化材料可适用于作为防污涂层的应用。
