【摘要】 本文研究了油包水（Ｗ／Ｏ）乳液中群青粒子微胶囊化的机理，并探讨了粒子表面分形维数与其表面形貌的关系。结果表明，在Ｗ／Ｏ乳液中群青粒子进入乳液的液珠内形成“微型反应器”，使微胶囊化反应在液珠内的群青粒子表面进行，形成硅胶囊膜，有效地提高了群青的耐酸性；粒子的表面分维可量化表征粒子的表面形貌，群青粒子表面分形维数的大小可用于说明群青耐酸性的强弱更多还原

【Abstract】 In this paper,microencapsulation mechanism of ultramarine particles in W/O emulsion was investigated.We made an approach to the relationship between surface fractal dimensionality(D) and surface shape of particles.The results show:In W/O emulsion, ultramarine particles get into aqueous beads of emulsion , forming “microreactor”. The reaction of microencapsulation takes place on the surface of particles in beads of W/O emulsion, which forms membrane of silicagel capsule,and the acid-resistance of ultramarine can be effectively improved. Shape of particle surface can be quantitatively characterized by surface fractal dimensionality.Value D may be used for explaining acid-reistance of ultramarine.更多还原