Water-Repellent Thin Film with High Alkali Resistance Using the Sol–Gel Method for Ink Jet Printer Head
Water-Repellent Thin Film with High Alkali Resistance Using the Sol–Gel Method for Ink Jet Printer Head
复制标题
采用溶胶-凝胶法制备喷墨打印机头的高耐碱性防水薄膜
DOI：
10.1143/jjap.41.3896
复制
发表时间：
2002
影响因子：
1.5
通讯作者：
T. Hiwatashi
中科院分区：
文献类型：
--
作者：
T. Nakagawa;T. Hiwatashi
由硅烷偶联剂制备的疏水薄膜已被广泛用于在各种表面上诱导疏水性。然而，通过常规方法获得的膜对碱性溶液的耐久性差。以氟烷基甲氧基硅烷和1，4-二（三甲氧基硅乙基）苯（BTB）为原料，采用溶胶-凝胶法制备了一种新型的高耐碱防水薄膜。在pH=8.9的碱性墨水中70°C浸泡500 h后，膜仍保持其疏水性。虽然膜在高达300°C的温度下热处理后保持了耐碱性，但在400°C下热处理的膜失去了耐碱性。薄膜的傅里叶变换红外测量表明，BTB分子中的乙基在400°C下燃烧或氧化。据推测，硅氧烷键附近的乙基基团和三维BTB聚合物网络阻止OH-离子接近和破坏膜中的硅氧烷键，因此膜具有高耐碱性。我们证明，新的防水膜是适用于喷墨打印机头。
Water-repellent thin films from silane coupling agents have been widely used for inducing hydrophobicity on various surfaces. However, films obtained by conventional methods have poor durability against alkaline solutions. A new water-repellent thin film with high alkali resistance has been obtained for the first time by the sol–gel method using fluoroalkylmethoxysilane and 1,4-bis(trimethoxysilylethyl)benzene (BTB). The film maintained its hydrophobicity after soaking in alkaline ink with pH=8.9 at 70°C for 500 h. While the film maintained alkali resistance after being heat-treated at temperatures up to 300°C, that heat-treated at 400°C lost its alkali resistance. Fourier transform infrared measurements of the film indicated that ethyl groups in BTB molecules burn or oxidize at 400°C. It is speculated that the ethyl groups in the vicinity of siloxane bonds and the three-dimensional BTB polymer network prevent OH-ions from approaching and breaking the siloxane bonds in the film, and thus the film has high alkali resistance. We demonstrate that the new water-repellent film is applicable to the ink jet printer head.