十八烷基聚甲基丙烯酸甲酯相变微胶囊的制备及其表征  

Preparation and characterization of octadecyl PMMA phase change microcapsules

作　　者：李东昇 刘雷艮 吴建兵 孙银银 陆鑫 LI Dongsheng;LIU Leigen;WU Jianbing;SUN Yinyin;LU Xin(School of Textile Garment and Design,Changshu Institute of Technology,Suzhou,Jiangsu 215500,China;College of Textile and Clothing Engineering,Soochow University,Suzhou,Jiangsu 215006,China)

机构地区：[1]常熟理工学院纺织服装与设计学院,江苏苏州215500 [2]苏州大学纺织与服装工程学院,江苏苏州215006

出　　处：《毛纺科技》2022年第10期64-71,共8页Wool Textile Journal

基　　金：国家自然科学青年基金项目(51903019);江苏省高等学校自然科学基金面上项目(17KJB540001,19KJB430006)。

摘　　要：以聚甲基丙烯酸甲酯(PMMA)为壁材,十八烷(C18)为芯材,采用悬浮聚合法制备相变微胶囊,探讨了乳化剂用量、乳化转数、芯壁质量比m(C18)∶m(PMMA),对相变微胶囊的粒径大小、表面形貌及热学性能的影响,并对微胶囊的化学结构与晶体结构、热稳定性、热循环性以及致密性进行了表征与分析。研究结果表明:以乳化剂质量分数4.8%、乳化转数速3000 r/min、芯壁质量比m(C18)∶m(PMMA)1∶1制备的相变微胶囊相变温度为24.7℃,相变潜热为169.13 J/g,储能效率E_(es)为76.4%、包覆率E_(en)为79.78%、储热能力C_(es)为95.76%,具有较高的热焓值以及优秀的循环稳定性,有望用于智能调温纺织品的制备原料。Phase change microcapsules were prepared by suspension polymerization with polymethyl methacrylate(PMMA)as wall material and octane(C18)as core material.The amount of emulsifier,emulsification revolution and core-wall ratio(m(C18)∶m(PMMA))on the particle size,surface morphology and thermal properties of the microcapsules were investigated,and the chemical structure and crystal structure,thermal stability,thermal cycling and compactness of the microcapsules were characterized and analyzed.The results show that the emulsifier mass fraction 4.8%,emulsification rotation 3000 r/min,core-wall ratio(m(C18))∶m(PMMA)1∶1 prepared phase transition microcapsules with phase transition temperature of 24.7℃,latent heat of phase transition of 169.13 J/g,energy storage efficiency(E_(es))of 76.4%,coating rate(E_(en))of 79.78%,heat storage capacity(C_(es))of 95.76%,with high enthalpy value and excellent cycle stability.It is expected to be used as raw materials for the preparation of intelligent temperature regulating textiles.

关 键 词：相变材料 相变微胶囊 蓄热调温 智能环保 PMMA 十八烷 

分 类 号：TS195.6[轻工技术与工程—纺织化学与染整工程]