磺酸盐型氟硅表面活性剂的制备及其性能

Preparation and Properties of Sulfonate Fluorosilicone Surfactant

摘要:

以八甲基环四硅氧烷（D4）、1,3,5-三甲基-1,3,5-三（3,3,3-三氟丙基）环三硅氧烷（D3F）、四甲基二硅氧烷（D2H）、烯丙基环氧基聚醚、KHSO3为原料，经过开环聚合、硅氢加成和磺化反应制得一种磺酸盐型氟硅表面活性剂（FPESS)。用红外光谱和核磁共振氢谱对其结构进行了表征，对FPESS磺化反应条件进行了优化，并对FPESS的表面张力、发泡力、乳化力、耐酸耐碱耐盐、耐硬水稳定性等进行了研究。结果显示FPESS磺化反应的最佳条件为：环氧基与KHSO3的摩尔比为1:1.2，反应温度60℃，反应时间6h。性能研究结果表明：FPESS水溶液的临界胶束浓度为2.0g/L，表面张力（γcmc）为21.01mN/m，质量分数为0.1%的FPESS的发泡力为1.47，5min时的稳泡性为0.71，质量分数为0.5%的FPESS对煤油、石油醚、异戊醇的乳化力良好，FPESS溶液耐酸碱盐等化学性质稳定，在硬水中的稳定性为4级。

Abstract:

Sulfonate fluorosilicone surfactant（FPESS）was synthesized with ring-opening polymerization，hydrosilylation and sulfonate reaction using octamethylcyclotetrasiloxane（D4）,1,3,5-trimethyl-1,3,5-tris（3,3,3 -trifluoropropyl）cyclotrisiloxane（D3F），1,1,3,3-tetramethyldisiloxane（D2H），allyl epoxy polyether and potassium hydrogen sulphite as the raw materials. The chemical structure of the FPESS is characterized by Infrared Spectroscopy and Nuclear Magnetic Resonance Spectroscopy，the FPESS sulfonate reaction conditions were optimized，and the surface tension，foam ability，emulsifying ability，acid-resisting，alkali-resisting and salt-resisting ，stability in hard water of FPESS were measured.The optimum sulfonate reaction condition of synthetise FPESS results showed that epoxy group and potassium hydrogen sulphite molar ratio was 1:1.2，reaction temperature was 60癈，reaction time was 6h .The results of performance test showed that the surface tension (γcmc) of FPESS solution was 21.01 m N/m at the critical micelle concentration (cmc) of 2.0 g/L，the foaming power of 0.1% (mass fraction) FPESS solution was 1.47 and foam stability after 5 min was 0.71，the 0.5% (mass fraction) of FPESS had good emulsifying power to kerosene，epetroleum ether，isoamyl alcohol，the FPESS solution had excellent chemical stability of acid-resisting，alkali-resisting and salt-resisting，the stability of FPESS in hard water was grade 4.