多阳离子位点季铵盐与AEC复配体系的应用性能研究

Application properties of the mixed system of AEC and a quaternary ammonium salt with multiple cationic sites

将含多阳离子位点双子季铵盐表面活性剂(TC-GS)与脂肪醇聚氧乙烯醚羧酸钠(AE_(9)C)以不同比例复配,并测试了不同复配比例下混合体系的浸润、去污、乳化、抗静电和活性炭分散性能。结果表明,不同复配比例下的TCGS/AE_(9)C体系都为均一透明溶液,表现出优异的复配稳定性。复配体系对帆布片的浸润能力优于单一表面活性剂,其中α_(TC-GS)为0.4时浸润性能最好。复配体系在乳化液体石蜡的过程中表现出协同增效作用。AE_(9)C溶液对炭黑污布和油脂污布都具有较好的去污能力,但与TC-GS复配后去污性能有所下降,可能由于TC-GS在污布表面的吸附阻碍了污渍的洗涤剥离。TC-GS溶液和复配体系溶液均表现出较好的抗静电性能,能够将聚酯织物表面电阻降低至≤10^(10)Ω。最后,大部分复配比例下的TC-GS/AE_(9)C体系溶液都具有良好的分散活性炭的能力;但当复配比与理论等电摩尔比一致时,复配溶液对活性炭的分散稳定性能较差。

A quaternary ammonium surfactant(TC-GS)containing multiple cationic sites was mixed with sodium fatty alcohol polyoxyethylene ether carboxylate(AE_(9)C)in different ratios,and the wetting,detergency,emulsification,antistatic and activated-carbon-dispersing properties of the mixed systems were tested.The results showed that the TC-GS/AE_(9)C system was homogeneous and transparent solution at different mixing ratios,indicative of excellent compatibility and stability.The mixed system showed better wetting ability for canvas cloth than single surfactant,with the best wetting performance at α_(TC-GS) of 0.4.The mixed surfactants showed synergistic effect in the process of emulsifying liquid paraffin.The AE_(9)C solution had good detergency for both carbon-black-stained cloth and grease-stained cloth,but the detergency was decreased after mixed with TC-GS,probably due to the adsorption of TC-GS on the surface of stained cloths,which hindered the washing and stripping of stains.Both TC-GS solution and the solution of TC-GS/AE_(9)C system exhibited 10 good antistatic performance and could reduce the surface resistance of polyester fabric to≤10^(10)Ω.The TC-GS/AE_(9)C system at most mixing ratios had good ability to disperse activated carbon;however,when the mixing ratio was consistent with the theoretical isoelectric molar ratio,the mixture had poor dispersion stability for activated carbon.