摘要
用硅氢化加成和氨解开环反应先制备侧链带有全氟酯基、三氟丙基和硅乙氧基的改性聚硅氧烷(FPFAS)中间体,再利用硅乙氧基水解产生的Si-OH与硅溶胶间的原位缩合反应,制得一类梳状氟硅共聚物-纳米Si O2杂化材料(FPFAS-Si O),并将其用于棉织物的超疏水整理。探讨了FPFAS-Si O2 2的制备条件,并用红外光谱仪(IR)、核磁共振仪(1H NMR)、热重分析仪(TGA)和接触角测量仪等手段对产物结构、耐热稳定性和疏水性能进行表征。结果表明,产物具有预期结构;纳米Si O2的加入可显著提高FPFAS的耐热稳定性;当FPFAS的Si-H键含量为0.23%、黏度为580 m Pa·s,纳米Si O2平均粒径为134.3 nm时,处理后棉织物具有良好的超疏水性能,织物表面水静态接触角最大可达163.5°。
The comb-like polysiloxane intermediates （FPFAS） containing perfluoroalkyl ester/trifluoropro- pyl/ethoxy silane are firstly prepared by hydrosilylation and ring-opening reaction. Then a series of comb- like fluorosilicon copolymer/nano silica composites （FPFAS-SiO2） are formed via in situ condensation be- tween Si-OH groups from the hyrolysis of ethoxy silane and silica sols, and they are applied to cotton fabric via simple dip-coating method. The synthesis process of FPFAS-SiO2 is discussed, and the struc- ture, thermal stability and hydrophobic property of the product are characterized with infrared spectros- copy （IR）, ＇H NMR, thermogravimetry analyzer （TGA） and contact angle meter. The results indicate that the product has the expected structure and its thermal stability is greatly improved due to the introduction of nano silica. The FPFAS-SiO2 treated cotton fabrics feature excellent superhydrophobicity and the maximum static water contact angle of 163.5° with Si-H content of 0.23%, viscosity of 580 mPa-s and average particles size of 134.3 nm.
出处
《印染》
北大核心
2015年第9期6-10,共5页
China Dyeing and Finishing
基金
陕西省教育厅专项(14JK1099)
陕西科技大学博士科研启动基金(BJ14-04)
中国博士后基金面上项目(2014M562515XB)资助
