棉织物无氟超疏水整理.pdf

30 5 Vol . 30 No. 5 2009 5 Journal of Textile Research May 2009 : 0253- 9721 2009) 05- 0078- 04 高琴文, 刘玉勇, 朱 泉, 郭玉良 , 201620) , , , , , 155b , ; ; ; ; :TS 195. 57 ; O 648. 16 : A Non-fluorinated superhydrophobic finish of cotton fabric GAO Qinwen, LIU Yuyong, ZHU Quan, GUO Yuliang Key L aboratory of Eco-Textiles, Ministry of Educat ion , Donghua University , Shang hai 201620 , China) Abstract The aim of this study is to prepare water repellent cotton fabric via sol-gel method using non- fluorinated addit ives , thus avoiding the potential risk for environment from fluoroalkyl compounds. Superhydrophobic cotton fabric was successfully obtained f irst by dip- coating the silica sol, then the fabric was modified with alkyltrialkoxysilanes through self- assembly methods. Silica sols with different sizes were prepared by controlling the concentration of ammonia. The influence of silica nanoparticle sizes, structure and concentration of alkyltrialkoxysilanes , and washing cycles on water contact angle were discussed. Superhydrophobic cotton fabric with water contact angle of 155b can be achieved by this method. Scanning electron microscopy was used to observe the cotton fabric surfaces treated with and without silica sol. Physical and mechanical properties of cotton fabric showed a slight change after treatment. Key words cotton fabric; so-l gel method; non-fluorinated ; superhydrophobic; finishing [ 4] 150b , , [ 1]