癸酸基相变材料的制备及性能研究  

Preparation and Properties of Capric Acid-Based Phase Change Materials

作　　者：杨迪 思芳 车秋凌 代阿瑞 杨敏鸽 姜凤阳 叶根根 王俊勃 YANG Di;SI Fang;CHE Qiu-ling;DAI A-rui;YANG Min-ge;JANG Feng-yang;YE Gen-gen;WANG Jun-bo(School of Materials Engineering,Xi'an Polytechnic University,Xi'an 710048,China;Anta(China)Co.,Ltd.,Jinjiang 362212,China;Shaanxi Dingxin Huizhi Functional Materials Technology Co.,Ltd.,Xi'an 710048,China)

机构地区：[1]西安工程大学材料工程学院,陕西西安710048 [2]安踏(中国)有限公司,福建晋江362212 [3]陕西鼎新汇智功能材料科技有限公司,陕西西安710048

出　　处：《塑料科技》2024年第4期28-32,共5页Plastics Science and Technology

基　　金：陕西省技术创新引导计划(2024QCY-KXJ-021);陕西省科技厅三项改革项目(2024ZC-YYDP-17);西安市科技计划项目(2023GXFW0021);中国纺织工业联合会科技指导性计划项目(2021006);泉州市科技计划项目(2021G04)。

摘　　要：目前智能调温织物存在温度范围窄、价格昂贵、稳定性不足等问题。为解决此问题,文章采用物理共混的方法制备癸酸/聚甲基丙烯酸甲酯(CA/PMMA)和癸酸/聚乙烯醇(CA/PVA)低温相变材料。采用差示扫描量热法、导热系数测定仪、傅里叶红外光谱分析仪、同步热重分析仪对相变材料的储热性能、导热系数、化学结构、热稳定性进行表征。结果表明:CA含量为80%的CA/PVA低温相变材料综合性能较好,其相变温度为29.69℃,相变潜热为325.40 J/g,导热系数为0.8154 W/(m·K)。PVA和PMMA的加入促进了CA基相变材料的界面相容性,使其相变材料的缺陷和界面空隙相对较多,热量传递效率较快,有效提高了导热性能。PVA和PMMA的包覆延缓了燃烧界面以外的热量和氧气向材料内部迁移的速度,起到隔热作用,同时也提高了相变材料的热稳定性。At present, intelligent temperature-regulating fabrics have some problems, such as narrow temperature range, high price, and insufficient stability. In order to solve the problems, the low temperature phase change materials of capric acid/ polymethyl methacrylate (CA/PMMA) and capric acid/polyvinyl alcohol (CA/PVA) were prepared by physical blending. A differential scanning calorimetry, a thermal conductivity tester, a fourier infrared spectrometer, and a synchronous thermogravimetric analyzer were used to characterize the thermal storage performance, thermal conductivity, chemical structure, and thermal stability of phase change materials. The results show that the CA/PVA low-temperature phase change material with 80% CA content has good comprehensive properties, with a phase change temperature of 29.69 ℃, a phase change latent heat of 325.40 J/g, and a thermal conductivity of 0.815 4 W/(m·K). The addition of PVA and PMMA promotes the interfacial compatibility of CA-based phase change materials, which makes the phase change materials have more defects and interfacial gaps, and the heat transfer efficiency is faster, which effectively improves the thermal conductivity. The coating of PVA and PMMA delays the migration of heat and oxygen from the combustion interface to the inside of the material, which plays a role in heat insulation and improved the thermal stability of the phase change material.

关 键 词：癸酸 甲基丙烯酸甲酯 聚乙烯醇 低温相变材料 

分 类 号：TB332[一般工业技术—材料科学与工程]