含磷氮丙烯酸酯及其共聚物核壳粒子的制备

Preparation of Phosphorus - Nitrogen - containing Acrylate and its Copolymer Core - Shell Particles

摘要:

以苯基膦酰二氯、丙烯酸羟乙酯和二乙胺为原料，合成丙烯酸羟乙酯-苯基-二乙基磷酰胺（APEEA）单体。以APEEA和丙烯酸丁酯为内核材料、甲基丙烯酸甲酯为壳层材料通过种子乳液聚合法制备了含磷氮丙烯酸酯的核壳粒子，经激光粒度仪测试其平均粒径在0.08～0.1μm左右。透射电镜（TEM）照片显示粒子具有核壳结构，并确定了核壳的尺寸。热重分析（TG）结果表明APEEA的引入可提高核壳粒子的热稳定性和成炭率。微型燃烧量热仪（MCC）测试结果表明，与内核材料为纯丙烯酸丁酯相比，引入APEEA达到15%时，热释放率峰值降低了55%；APEEA的催化成炭作用是改善粒子燃烧性质的主要因素。

Abstract:

Hydroxyethyl acrylate-phenyl-diethyl phosphoramide (APEEA) was prepared using phenyl phosphonic dichloride, hydroxyethyl acrylate and diethylamine as the raw materials. A series of core-shell particles with the average diameter about 0.08～0.1μm were prepared via seeded emulsion polymerization. The core-shell structure with APEEA and butyl acrylate as core, methyl methacrylate as shell was measured by transmission electron microscopy (TEM) analysis. The thermogravimetric analysis (TG) results indicated that the thermal stability and charring residue of the core-shell particles was increased by adding APEEA. The microscale combustion calorimeter results showed that APEEA can significantly improve the fire performance of the core-shell particle. Comparing with core materials for the particles of pure acrylic ester, the peak heat release rate was decreased by 55% with 15wt.% APEEA. The char-forming reaction of APEEA is the major factor of improving the particle combustion properties.