以脂肪醇嵌段聚醚即一种脂肪醇聚氧丙烯聚氧乙烯醚、氨基磺酸为原料,尿素为催化剂,合成了硫酸酯盐延展型阴-非离子表面活性剂,采用红外光谱对其结构进行了表征,采用浊度法、滴体积法、分水时间法、分散指数法对其低温溶解性能、表面性能、乳化性能、分散性能进行了测定.采用单因素实验法,研究了反应温度、反应时间、催化剂用量、原料配比等因素对产物中活性物含量的影响,并确定了最佳合成反应条件.结果表明,在反应温度100℃、反应时间3h、催化剂用量为反应物总质量的1%、n(嵌段聚醚)∶n(氨基磺酸)=1∶1.5 条件下,产物中活性物含量达到96.49%.
The structure of the surfactant was characterized by infrared spectroscopy,and its low-tempera-ture solubility,surface properties,emulsification properties and dispersion properties were measured by turbidity,drop volume,water splitting time and dispersion index methods.The effects of reaction tempera-ture,reaction time,catalyst dosage and raw material ratio on the content of active substances in the prod-ucts were investigated by the single-factor experimental method,and the optimum synthesis reaction condi-tions were determined.The results showed that under the conditions of reaction temperature of 100℃,re-action time of 3 h,catalyst dosage of 1%of the total mass of the reactants and n(block polyether)∶n(sul-famic acid)=1∶1.5,the content of active substances in the products reached 96.49%.