纳米石蜡乳液的制备及分析

摘要

采用反相乳化(EIP)法,以Span-20、Tween-20为复合乳化剂,其HLB值为10.5、浓度为8%,选择HMHEC/锂皂石为助乳化剂,制得稳定的水包油纳米石蜡乳液.所得纳米石蜡乳液滴为负电性,平均粒径在96～126nm之间,乳液粒径在5个月内无显著变化,具有好的长期稳定性,无机盐对其长期稳定性无影响.%With the method of emulsion inversion phase (EIP),the O/W type nano-emulsions of paraffin was prepared using Span-20 and Tween-20 as emulsifier for wax complex,and HMHEC/hectorite as co-emulsionfier,the HLB is 10.5, the quantity of emulsifier is 8％.It was found that the nano-emulsions of paraffin with good stability was electronegative.The mean particle size of paraffin was 96～126nm.The droplet sizes were kept unchanged in 5 months.The long-term stability of the namo-emulsions has slight change by mineral salt.