改性油脂乙氧基化物磺酸盐的性能测试及其在机洗餐具用洗涤剂中的应用

The performance test of modified oil ethoxylate sulfonate and its application in the automatic dishwashing detergent

改性油脂乙氧基化物磺酸盐(SNS-80)是一种以植物油脂为原料得到的绿色环保的阴离子型表面活性剂,安全无刺激,可广泛应用于各类洗涤剂产品中。分别采用旋转黏度计、Ross-Miles泡沫仪、帆布沉降法、振荡法和改进的酸滴定法测试了SNS-80的黏度、发泡稳泡性能、润湿、乳化和钙皂分散力,并测试了SNS-80在室温和(95±2)℃时的表观耐盐和耐碱性能;将SNS-80应用于机洗餐具用洗涤剂中,考察了其稳定性和去污性能,并与市售产品进行了比较。结果表明,SNS-80水溶液在整个浓度区间内都具有低的黏度,且无凝胶相区,起始泡沫高但消泡快,具有好的钙皂分散力,1 g SNS-80可以分散18.7 g钙皂;表观耐盐能力低温时较高温时好,对一价盐的耐受能力较二价盐高;而表观耐碱度则是在高温时好,在(95±2)℃时可高达168 g/L。与市售机洗餐具洗涤剂相比,以SNS-80为主活性物得到的产品具有更好的去污能力。

The modified oil ethoxylate sulfonate(SNS-80)is a new green and environmentally friendly anionic surfactant.It is safe and non-irritating,and can be widely used in various detergent products.The viscosity,foaming power and foam stability,wetting,emulsification and calcium soap dispersing ability of SNS-80 were measured with rotational viscometer,Ross-Miles foam analyzer,canvas sedimentation method,shaking method and improved acid titration,respectively.The apparent salt resistance and alkali resistance of SNS-80 were tested at(25±2)and(95±2)℃.The automatic dishwashing detergent containing SNS-80 was prepared.Its stability and detergency were investigated and compared with the commercial products sold in the market.The results showed that the aqueous solution of SNS-80 has low viscosity and no gel phase region in the whole concentration range,and it has high initial foam and fast defoaming,and has excellent calcium soap dispersing power(1 g SNS-80 can disperse 18.7 g calcium soap).The apparent salt tolerance is better at low temperature than that at high temperature,and the tolerance to monovalent salt is higher than that of divalent salt.The apparent alkali resistance can reach 168 g/L at(95±2)℃.Compared with the commercial automatic dishwashing detergent,the samples containing SNS-80 as the main component have better detergency.