胶乳的平均粒径及粒径分布直接影响胶乳固体物浓缩和制品性能,但由于胶乳软化温度低于常温,又在干燥时粒子易于变形和凝聚,长期来难于用电镜方法对胶乳粒径进行有效观察和测量。本文采用的“低温冷冻—真空干燥法是一种制备胶乳样品的有效方法。通过SEM观察结果表明,胶乳粒子分散性好,且无变形。该方法可为有效的研究胶乳粒子提供了可靠依据。 The average particle size and particle size distribution of latex directly affect the concentration of latex solids and product performance, but due to the latex softening temperature is lower than normal temperature, but also easy to deform and agglomeration of particles in the dry, the long difficult to electron microscopy latex particle size effective Observation and measurement. The cryogenic freezing-vacuum drying method used in this paper is an effective method to prepare latex samples.The SEM results show that the latex particles have good dispersibility and no deformation.The method can provide a reliable basis for the effective study of latex particles.