氧化石墨烯改性密胺树脂/石蜡相变微胶囊的制备及性能

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。...

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Published in高分子材料科学与工程 Vol. 33; no. 5; pp. 147 - 151
Main Author 张丽 杨文彬 张凯 谢长琼 何方方 范敬辉 吴菊英
Format Journal Article
LanguageChinese
Published 2017
Subjects
包覆率
密胺树脂
氧化石墨烯
相变微胶囊
石蜡
防渗性能
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Summary: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。
Bibliography:graphene oxide; paraffin; melamine-formaldehyde resin; microencapsulated phase change materials;encapsulation rate; leakage-prevention performance
Li Zhang1, Wenbin Yang1,2, Kai Zhang3, Changqiong Xie1, Fangfang He1, Jinghui Fan3, Juying Wu3 （ 1. State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, Mianyang 621010, China ; 2. State Key Laboratory of Polymer Materials Engineering（ Sichuan University, Chengdu 610065, China ; 3. Institute of System Engineering, China Academy of Engineering Physical, Mianyang 621900, China ）
51-1293/O6
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 prepa
ISSN:1000-7555