氨基硅-纳米SiO_2杂化材料的制备及超疏水性能

Synthesis and superhydrophobicity of amino modified polysiloxane/nano SiO_2 hybrid material

以正硅酸乙酯(TEOS)、γ-(2,3-环氧丙氧基)丙基三甲氧基硅烷(KH560)、N-β-氨乙基-γ-氨丙基聚二甲基硅氧烷(ASO)等为原料,通过溶胶-凝胶和接枝共聚等方法制备了一种氨基硅-纳米SiO2杂化材料(ASO-SiO2),经一浸一轧、烘焙工艺整理,制得了超疏水棉织物,对水的静态接触角达155°.用红外光谱(FT-IR)、X射线光电子能谱(XPS)、扫描电子显微镜(SEM)、接触角测量仪等仪器研究了杂化材料的结构、微观形貌和超疏水性能.FT-IR分析表明,ASO-SiO2具有预期的分子结构;XPS分析和SEM观察证实,整理的棉织物表面存在一层超疏水杂化有机硅膜和大量的仿荷叶纳米微凸体;接触角测量发现,在一定范围内,随着ASO-SiO2用量的增加,整理棉织物的超疏水性明显提高.

A novel amino modified polysiloxane/nano SiO2 hybrid material （ASO-SiO2） was prepared via sol gel and graft copolymerization methods using tetraethoxysilane （TEOS）, γ-（2,3-epoxy propoxy） propy trimethoxysilane, N-β-aminoethyl-γ-aminopropylpolysiloxane （ASO） as raw materials. Then superhydrophobic cotton fabric was constructed with contact angle of water on its surface 155 through immersing pad-dry-cure finish process. The chemical structure, micro morphology and superhydrophobicity of the ASO-SiO2 were investigated by the Fourier transform infrared spectrum （FT-IR）, X-ray photoelectron spectros- copy （XPS）, scanning electron microscopy （SEM） and contact angle meter respectively. FT-IR analysis showed that ASO-SiO2 had the expected molecular structure. XPS and SEM observations results indicated that a su- perhydrophobic hybrid silicon film and many lotus-leaf-like micro nano scale tubercles were coated on the sur- face of cotton fabric. Contact angle meter revealed that superhydrophobicity of the cotton fabric treated by ASO-SiO2 increased remarkably with increase of the amount of ASO-SiO2 in a certain range.