六氢苯酐-咪唑复合微胶囊的制备研究 论文.doc

PAGE 5 系 别 题目:六氢苯酐/咪唑复合微胶囊的制备研究 日 PAGE II 六氢苯酐/咪唑复合微胶囊的制备研究 摘要 微胶囊固化剂是一类新型的环氧树脂固化剂，利用其潜伏性可以提高树脂的储存稳定性，从而解决了两相固化体系的一些弊端。本课题以二氯甲烷(DCM )作为溶剂相，聚乙烯醇为分散剂，SDS为乳化剂，分别以六氢苯酐和2-乙基-4-甲基咪唑为芯材，以PGMA为壁材，采用溶剂挥发法制备微胶囊固化剂，并分别讨论囊芯比、温度、转速以及分散剂浓度对微胶囊的影响。通过偏光显微镜、傅里叶红外光谱仪分析微胶囊的形貌、结构，结果发现选择0.3%的聚乙烯醇表面活性剂、783r/min转速、温度为40℃、囊芯比为1.0:1.0时制备的微胶囊表面光滑致密，微胶囊粒径分布窄。 关键词：微胶囊固化剂；溶剂蒸发；环氧树脂 Preparation of hexahydro phthalic anhydride / imidazole compound microcapsules Abstract Microencapsulated curing agent is a new class of epoxy resin curing agent can be improved.Using the latent storage stability of the resin. In order to address some of the drawbacks of the two-phase curing system.The topics to dichloroethane(DCM) as the solvent phase polyvinyl alcohol as dispersant SDS as emulsifier.Respectively hexahydro phthalic anhydride and 2-ethyl-4-methylimidazole as a core material for the wall material to PGMA.Using the sovent evaporation curing agent prepared microcapsules respectively to discuss the impact ratio,temperature,speed and dispersant concentration capsule core of microcapsules.By polarized light microscopy fourier transform infrared spectroscopy analysis microcapsule morphology,strucyure and found that 0.3% polyvinyl alcohol choice of surfactant and 783r/minspeed .The temperature is 40℃.When the capsule core ratio was 1.0:1.0,the dense surface of microcapsules is smooth and the microcapsules size distribution is narrow. Key words:microcapsules curing agent;solventevaporation;epoxy PAGE PAGE IV PAGE PAGE III 目 录 TOC \o 1-3 \h \z \u 1 绪论 1 1.1微胶囊概述 1 1.1.1微胶囊技术 1 1.1.2微胶囊的基本形态 1 1.1.3微胶囊的特点 2 1.1.4微胶囊壁材与芯材的选择 2 1.2微胶囊技术的应用 5 1.2.1在医药领域 5 1.2.2在环保和能源领域 5 1.2.3在修复用复合材料中的应用 6 1.2.4在日用化妆品中的应用 6 1.2.5在阻燃剂中的应用 7 1.2.6在食品中的应用 7 1.4 国内外相关研究情况 8 1.5本课题研究的主要内容 8 2 实验部分 10 2.1实验试剂 10 2.2实验仪器 11 2.3实验过程 11 2.3.1聚甲基丙烯酸缩水甘油酯的制备 11 2.3.2六氢苯酐微胶囊的制备 11 2.3.3 2-乙基-4-甲基咪唑微胶囊的制备 12 2.3.4环氧树脂的固化实验 1