【摘要】 在醇水体系下,以正硅酸乙酯（TEOS）和γ-氨丙基三乙氧基硅烷（KH550）为原料,氨水为催化剂经水解缩合反应制得氨基化SiO₂;再以其为核,2,2-二羟甲基丙酸为单体制得超支化纳米SiO₂（HB-SiO₂）.利用全氟烷基乙醇（S104）与HB-SiO₂对聚氨酯预聚体进行改性,制得末端为氟烃基的超支化纳米杂化水性聚氨酯（HBPUF-SiO₂）.用红外光谱（FTIR）、核磁共振氢谱（1 H NMR）、透射电镜（TEM）对乳液主成分结构及乳胶粒微观形貌进行研究.以织物表面静态水接触角为指标,用KH550和HBPUF-SiO₂依次对织物进行疏水整理.同时,对织物的透气性、柔软度、白度及表面微观形貌进行研究.结果表明:合成产物具有预期结构.HBPUF-SiO₂乳胶粒呈规则球形,平均粒径为161.9nm.当KH550和HBPUF-SiO₂的质量浓度分别为1.5%和0.5%时,整理后织物表面有纳米微球的存在,水静态接触角可达149.3°,具有良好的疏水性.织物的柔软度与透气性有所降低,白度的变化较小.更多还原

【Abstract】 The aminated silicon dioxide was synthesized by hydrolysis of tetraethoxysilane（TEOS）andγ-aminopropyl triethoxy silane（KH550）in alcohol water mixed solvents and ammonia used as the catalyst.The hyperbranched polymer-silica hybrid nanoparticles（HBSiO₂）were obtained with aminated silicon dioxide as the core and 2-bis-methylolpropionic aid（DMPA）as the monomer.And the HBPUF-SiO₂ was prepared by the modification of organic fluorine alcohol and HB-SiO₂.Infrared spectrum（IR）,proton nuclear magnetic resonance spectrum（1 H NMR）,and transmission electron microscope（TEM）were utilized to examine its structure and properties.With the static water contact angle（WCA）as an indicator,the KH550 and HBPUF-SiO₂ were used for fabric processing respectively,and the waterproof coating was prepared.In addition,the permeability,softness,whiteness and microscopic morphology of fabric were tested accordingly.Results showed that the resultant possessed the due structure.The HBPUF-SiO₂ latex particles presented a regularly spherical pattern with an average particle size of 161.9 nm.WCA on the modified fabric surface could attain 149.3°,while the concentrations of KH550 and HBPUF-SiO₂ were 1.5% and 0.5%,respectively.Its surface owned some nanospheres and showed good water resistance.The fabric softness and permeability decreased,while the whiteness changed little.更多还原