碳纳米管改性相变微胶囊的力学与热学性能  

Mechanical and thermal properties of phase change microcapsules modified with carbon nanotubes

作　　者：王瑞[1,2] 孙艳丽[1,2] 刘星[1,2] 杨华[1,2] 李博[1,2] 

机构地区：[1]天津工业大学纺织学院,天津300387 [2]天津工业大学先进纺织复合材料教育部重点实验室,天津300387

出　　处：《纺织学报》2018年第2期119-125,共7页Journal of Textile Research

基　　金：天津市应用基础与前沿技术研究计划重点项目(15JCZDJC38400)

摘　　要：为改善相变微胶囊制备蓄热调温纺织品时存在易破损、传热效率低的问题,通过原位聚合法以三聚氰胺、尿素、甲醛为壁材并掺杂等离子体处理的碳纳米管(CNTs)包覆正十八烷制备相变微胶囊,探讨CNTs对微胶囊力学、热学性能的影响。采用扫描电子显微镜、傅里叶红外光谱分析仪、原子力显微镜、差式扫描量热仪和热常数分析仪对所制备的相变微胶囊的表面形貌、力学性能、热学性能进行表征与分析。结果表明:掺杂CNTs的微胶囊近似圆球形,表面较为光滑,力学性能、热传导性能均有提高;当CNTs添加量为2%时,其弹性模量提高了约190%、导热系数提高了近187%;平均相变焓可达到224.4 J/g、包覆率为74.07%;掺杂CNTs对微胶囊的力学、热学性能的改善有利于提高蓄热调温纺织品调温性能。In order to solve problems of easy breakage and low heat transfer efficiency when phase change microeapsules （mieroPCMs） were prepared for heat-storage and thermo-regulated textile, MicroPCMs were prepared based on noctadecane core and melamine-urea-formaldehyde shell with O2 plasma modified multi-walled carbon nanotubes （CNTs） by in-situ polymerization. The influence of addition modified CNTs on mechanical and thermal properties of microPCMs were investigated. MicroPCMs were characterized by scanning electron microscopy （SEM）, fourier transform infrared spectroscopy, atomic force microscope, differential scanning calorimetry and thermal constant analyzer. SEM images show that the microPCMs with CNTs are spherical and have relatively smooth surface. The results indicate that the mechanical and thermal properties of mieroPCMs can be remarkably improved by addition of moderate modified CNTs. Especially, when 2% of modified CNTs are added, the elasticity modulus and thermal conductivity of microPCMs are improved by 190% and 187% , respectively; and the heat enthalpy and encapsulated efficiency of microPCMs still can reach 224.4 J/g and 74.07%. Addition of modified CNTs into microPCMs is beneficial to enhance the mechanical and thermal properties of microPCMs and facilitate the temperature regulating performance of heat-storage and temperature- regulating textiles.

关 键 词：碳纳米管 等离子体处理 相变微胶囊 蓄热调温纺织品 

分 类 号：TS116[轻工技术与工程—纺织材料与纺织品设计]