喷雾干燥法制备水分散聚酰亚胺

利用喷雾干燥法制备了具有良好水分散性的聚酰胺酸微纳米颗粒, 其初次分散浓度可达20%, 并具有良好的再分散性. 这种微纳米颗粒经过处理后可进一步亚胺化形成透明的聚酰亚胺薄膜, 红外光谱和热失重测试结果表明薄膜已经完全亚胺化, 说明这种微纳米颗粒可应用于制备聚酰亚胺水性涂料. 同时, 对影响产物形貌的几种因素进行了初步研究.

Preparation of Water-dispersed Polyimides by Spray Drying

We describe a simple method to prepare a novel kind of water-dispersed polyimide.The resulting polymer particles exhibit a good dispersibility in water,and can form flat films after thermal imidization.The morphologies of particles vary with the chemical structures of polymers,while the temperature plays a lesser role.The spray method is proved to be a promising technique to fabricate polyimide micro-and nano-spheres.