摘要： 分别采用经过相反转过程的水入蜡乳化法和直接将蜡加入水中进行乳化的蜡入水乳化法 2 种工艺制备蜡乳液，测试所得蜡乳液粒径及分布等性能，分析乳化剂选择及复配、乳化剂用量、蜡水质量比、搅拌速度、乳化温度和时间等因素对蜡乳液粒径及其分布的影响。 试验结果显示:采用相反转工艺，以乳化剂 Span-80、Tween-80 和助乳化剂十二烷基硫酸钠组成乳化剂体系，在乳化剂的用量为蜡质量的 20%、蜡水质量比为 1 ∶5、乳化温度为 90 °C、搅拌速度大于1 500 r/ min，乳化时间为40 min条件下，能够得到平均粒径小于 100 nm 的蜡乳液。 透射电镜照片显示蜡乳液粒子形状为球形。

关键词: 相反转工艺, 蜡乳液, 粒径及分布, 巴西棕榈蜡

Abstract: The preparation technology and morphology of camauba wax emulsion prepared by phase inversion processing were investigated. Two kinds of wax emulsion preparation technologies such as water into wax emulsification method based on phase inversion processing and war into water emulsification method were applied to prepare wax emulsions respectively. Particle size and size distribution of the prepared wax emulsion were determined. The effect of dispersion by high speed homogenizer on particle size was also discussed In addition, the effects of selection and synergy of emulsifiers, concentration of emulsifier, mass ratio of carnauba wax to water, stirring speed, emulsifying temperature and time on the particle size and size distribution of wax emulsions were analyzed. The results indicated that wax emulsion with average particle size less than 100 nm could be obtained via phase inversion processing by using span-80, tween-80 and sodium dodecyl sulfate as synergized emulsifiers, satisfying the conditions including the mass ratio of emulsifier to camauba wax 20%, mass ratio of wax to water less than 1: 5, stiming speed higher than 1 500/min,emulsi-fying temperature 90 ℃ and emulsifying time 30 min. The shape of wax particle in emulsion was spherical observed by transmission electron microscopy (TEM).

Key words: phase inversion processing, wax emulsion, size and , size distribution, carnauba wax