氧化石墨烯改性密胺树脂/石蜡相变微胶囊的制备及性能  

Preparation and Propertiy of Melamine-Formaldehyde Resin/Paraffin Microencapsulated Phase Change Materials Modified by Graphene Oxide

作　　者：张丽[1] 杨文彬[1,2] 张凯[3] 谢长琼[1] 何方方[1] 范敬辉[3] 吴菊英[3] 

机构地区：[1]西南科技大学四川省非金属复合与功能材料重点实验室-省部共建国家重点实验室培育基地,四川绵阳621010 [2]高分子材料工程国家重点实验室(四川大学),四川成都610065 [3]中国工程物理研究院总体工程研究所,四川绵阳621900

出　　处：《高分子材料科学与工程》2017年第5期147-151,共5页Polymer Materials Science & Engineering

基　　金：国家自然科学基金委员会-中国工程物理研究院联合基金资助项目(U1530102);高分子材料工程国家重点实验室开放课题基金(sklpme2016-4-33);核废物与环境安全国防重点学科实验室开放基金(15kffk08)

摘　　要：通过原位聚合法制备了氧化石墨烯(GO)改性的密胺树脂(MF)/石蜡相变微胶囊。采用红外光谱、扫描电镜、差示扫描量热分析、热重分析等手段分析了相变微胶囊的微观结构及热性能,研究了GO含量对相变微胶囊形貌、包覆率和渗漏率的影响。研究结果表明,制备的相变微胶囊为较规则的球形,GO的加入并没有改变壁材或芯材的化学结构;GO改性使相变微胶囊的包覆率由91.39%提高至94.08%,增大了相变微胶囊的储能能力;GO改性相变微胶囊的防渗性能得到大幅提升,250h时的渗漏率由9.43%下降至2.68%,下降了71.6%,相变微胶囊的使用寿命得到提高。The graphene oxide （GO） modified microencapsulated phase change materials （MEPCMs） with melamine^formaldehyde resin （MF） as wall and paraffin as core were prepared by in situ polymerization. The microstructure and thermal property of MEPCMs were analyzed by FT-IR, SEM, DSC and TG. The effects of GO addition on the encapsulation rate and the leakage rate were investigated. The results show that the prepared MEPCMs have a regular spherical shape and the addition of GO does not change the chemical structure of MF and paraffin. The modification of GO improves the encapsulation rate of MEPCMs from 91.39% to 94.08%, and the energy storage capacity of MEPCMs is increased. The leakage-prevention performance of the modified MEPCMs is greatly improved, and the leakage rate is decreased by 71.6%, which decreases from 9.43% to 2.68% in 250 h. The service life of MEPCMs is improved.

关 键 词：氧化石墨烯 石蜡 密胺树脂 相变微胶囊 包覆率 防渗性能 

分 类 号：TQ316.6[化学工程—高聚物工业]