氟硅聚合物/纳米SiO_2杂化材料的制备与应用性能  

Synthesis and application performance of fluorine-silicon polymer/nano-silica hybrids

作　　者：许伟[1] 安秋凤[1] 郝丽芬[1] 王前进[1] 

机构地区：[1]陕西科技大学教育部轻化工助剂化学与技术重点实验室,陕西西安710021

出　　处：《功能材料》2011年第4期675-678,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50373025);陕西科技大学自然科学基金资助项目(ZX10-07)

摘　　要：通过本体聚合、溶胶-凝胶和接枝共聚等方法,以三氟丙基甲基-co-甲基氢硅氧烷(PFHMS)、烯丙基缩水甘油醚(AGE)和全氟辛基乙烯(PFOE)间的硅氢化加成反应制得侧链含有全氟烷基、反应性环氧基的氟硅聚合物(PFAMS),并利用其与氨丙基三乙氧基硅烷(KH550)溶胶-凝胶改性纳米SiO2间的接枝共聚反应制备了一种氟硅聚合物/纳米SiO2杂化材料(PFAMS-SiO2),经一次浸渍、烘焙的整理工艺,简便地制得了对水的静态接触角达160.91°的超疏水棉织物。用红外光谱(FT-IR)、扫描电子显微镜(SEM)、热重分析仪(TGA)、静态接触角测量仪等仪器研究了杂化材料的结构、微观形态、热稳定性和应用性能。TGA分析表明,杂化材料的热稳定性明显提高;SEM观察证实棉纤维表面存在一层疏水膜和大量的仿荷叶纳米微凸体。应用研究发现,随PFAMS-SiO2用量的增加,棉织物的超疏水性明显提高,柔软度先增后降,白度和透气性变化不大。Firstly a fluorine-silicon polymer（PFAMS） with pendant perfluoroalkyl and reactive epoxy groups was synthesized by Si-H additional reaction of polymethyltrifluoropropylsiloxane（PFHMS）,allylpolyoxyethylene ether（AGE） and perfluorooctyl ethylene（PFOE）.Then silica sols（KH550-SiO2） containing amino groups were prepared via sol-gel methods by aminopropyltriethoxylsilane（KH550） and tetraethyl orthosilicate（TEOS）.Finally a novel fluorine-silicon polymer/nano-silica hybrid（PFAMS-SiO2） was fabricated through graft copolymerization method by the above two chemicals,PFAMS and KH550-SiO2 and super-hydrophobic cotton fabric was also constructed with contact angle of water on its surface 160.91° through immersing-padding-baking processes.Chemical structure,micro-morphology,thermal stability and application performances of the hybrid were investigated by the Fourier transform infrared spectrum（FT-IR）,scanning electron microscopy（SEM）,thermo-gravimetric analyzer（TGA）,and static contact angle analyzer,respectively.Results showed that thermal stability of the hybrid was improved compared to fluorine-silicon polymer,a hydrophobic silicon film and many lotus-leaf-like micro-nano scale tubercles were coated on the surface of cotton fabrics.In addition,with increase of the amount of PFAMS-SiO2,super-hydrophobicity of the cotton fabrics increased,otherwise,softness of the treated cotton fabrics increased first and decreased afterwards.Permeability and whiteness of those fabrics had little change.

关 键 词：超疏水 棉织物 氟硅聚合物 溶胶-凝胶法 纳米杂化 

分 类 号：TB332[一般工业技术—材料科学与工程]