环己烷对相变材料微胶囊结构与性能的影响  

Effects of cyclohexane on structures and properties of microcapsulated phase change materials

作　　者：王学晨[1] 张兴祥[1] 樊耀峰[1] 牛建津[1] 蔡利海[1] 

机构地区：[1]天津工业大学功能纤维研究所,天津300160

出　　处：《天津工业大学学报》2004年第4期6-10,共5页Journal of Tiangong University

基　　金：国家自然科学基金资助项目 (50 0 73 0 1 5);天津市 (重点 )自然科学基金资助项目 (0 0 3 80 1 71 1 )

摘　　要：将不同比例的环己烷添加到囊芯正十八烷中,通过原位聚合法合成相变材料微胶囊,并采用SEM、DSC、TG等测试方法对胶囊性能进行研究.结果表明:随着环己烷添加量的增加,经过热处理的微胶囊的凹陷增大,具有凹陷的胶囊数增加,微胶囊的耐热温度也相应地增加;环己烷经过热处理挥发而产生的预留空间对胶囊耐热性的提高起主要作用.Microcapsulated phase change material (MicroPCM) was produced by in-situ polymerization. The core material encapsulated in the melamine-formaldehyde resin shell is a mixture of n-octadecane and cyclohexane. The microcapsules properties are systematically studied through SEM, DSC and TG. With the increase of cyclohexane, the surface of microcapsules turns smoother, and their dispersibility is improved. Additionally, after microcapsules are heat-treated at 160 ℃ for 30 minutes, their concaves get larger and the number of the concave capsules increase as cyclohexane increasing, and their heat-resistance temperatures are improved and higher than that of microcapsules without cyclohexane. The reserved space that is made of cyclohexane volatilization by heat-treating has great effect on the improvement of heat-resistance temperature of microcapsules.

关 键 词：环己烷 微胶囊 耐热性 相变材料 原位聚合 

分 类 号：O631.5[理学—高分子化学] TS102.528[理学—化学]