多支化聚氨酯改性有机硅表面活性剂的制备与性能

Preparation and properties of multibranched polyurethane modified silicone surfactants

为探究聚氨酯改性有机硅表面活性剂离子性及反应性对其乳化性和耐盐性的影响,以三乙醇胺(TEA)、异佛尔酮二异氰酸酯(IPDI)、端羟烃基聚硅氧烷3667、聚乙二醇(PEG2000)、溴代正丁烷、环氧氯丙烷为原料,分别制备了非离子型聚氨酯改性有机硅表面活性剂BC、阳离子型聚氨酯改性有机硅表面活性剂BC-1以及反应型聚氨酯改性有机硅表面活性剂RBC。通过FT-IR和1H NMR对三种聚氨酯改性有机硅表面活性剂的结构进行表征,并测试了其表面张力、稳泡性、乳化性和耐盐性。结果表明:BC、BC-1、RBC聚氨酯改性有机硅表面活性剂的表面张力分别为43.1 mN/m、46.9 mN/m、41.8 mN/m;BC、RBC聚氨酯改性有机硅表面活性剂的泡沫稳定性较好,达到80%以上;BC-1、RBC聚氨酯改性有机硅表面活性剂乳化稳定性时间分别为42.74 s、49.30 s;三种聚氨酯改性有机硅表面活性剂对NaCl、CaCl2的耐受程度可达到120g/L,在纺织印染领域具有良好的应用前景。

To investigate the effects of ionicity and reactivity of polyurethane modified silicone surfactants on their emulsification and salt resistance,non-ionic polyurethane modified silicone surfactant BC,cationic poly⁃urethane modified silicone surfactant BC-1 and reactive polyurethane modified silicone surfactant RBC are pre⁃pared with triethanolamine(TEA),isophorone diisocyanate(IPDI),dihydroxyalkyl polysiloxane 3667,polyethyl⁃ene glycol(PEG2000),bromobutane and epichlorohydrin as raw materials.The structures of three polyurethane modified silicone surfactants are characterized by FT-IR and 1 H NMR.Surface tension,foam stabilization,emul⁃sification and salt resistance properties of products are tested.The results show that the surface tensions of BC,BC-1 and RBC polyurethane modified silicone surfactants are 43.1 mN/m,46.9 mN/m and 41.8 mN/m,re⁃spectively;the foam stability of BC and RBC polyurethane modified silicone surfactants are both higher than 80%;the emulsion stability time of BC-1 and RBC polyurethane modified silicone surfactants is 42.74 s and 49.30 s,respectively;the inorganic salt tolerance of the three surfactants reaches 120 g/L in NaCl and CaCl2 solu⁃tion,it can be widely used in textile dyeing and printing field.