核壳型含氟硅丙烯酸酯无皂拒水剂的合成及应用

Synthesis of core-shell fluorosilicon modified acrylate soap-free water repellent agent and its application

为合成一种具有良好效果的拒水剂,以甲基丙烯酸月桂酯(LMA)和甲基丙烯酸甲酯(MMA)为成核单体,以甲基丙烯酸十二氟庚酯(G04)、乙烯基三乙氧基硅烷(KH-151)和甲基丙烯酸月桂酯(LMA)为成壳单体,采用核壳乳液聚合法制得含氟硅丙烯酸酯无皂乳液.研究功能单体(G04+KH-151)和反应性乳化剂1-烯丙氧基-3-(4-壬基苯酚)-2-丙醇聚氧乙烯(10)醚硫酸铵(DNS-86)的用量对乳液性能及拒水性能的影响.并对自制的含氟硅丙烯酸酯无皂乳液进行红外和热失重测试.结果表明,采用反应性乳化剂制备的无皂拒水剂的拒水效果明显提升,经自制无皂拒水剂整理后棉织物对水的接触角为138.2°,静水压为2.74kPa,具有良好的拒水效果.

In order to synthesize a water repellent agent which has good performance on pure cotton fabrics, core shell emulsion polymerization technique was applied to prepare polyacry- late soap free latexes containing fluorine and silicone, by employing lauryl methacrylate （LMA） and methyl methacrylate （MMA） as core monomers, dodecafluoroheptyl methacrylate （G04）, vinyhriethoxysilane （KH-151） and LMA as shell monomers. The usage amount of functional monomers （G04 and K H 151） and reactive emulsifier Poly（oxy-1,2-ethanediyl）, asulfo-w [1-[（4-nonylphenoxy） methyl]-2-（2-propen 1-yloxy） ethoxy]-, branched, ammoniumsalts （DNS-86） were investigated to reveal the emulsion performances and waterproof proper- ties. And the synthesized polyacrylate soap free latexes containing fluorine and silicone were characterized by Fourier Transform Infrared Spectrometer （FT IR） and thermogravimetric a nalysis （TGA）. The tested results illustrated that the water repellent properties of soap-free finishing agent prepared from reactive emulsifier were significantly improved. The cotton fabric treated by soap free finishing agent exhibited good water-repellent properties, which contact angle and hydrostatic pressure reached 138.2° and 2.74kPa.