高等学校化学学报 ›› 2024, Vol. 45 ›› Issue (4): 20230501.doi: 10.7503/cjcu20230501

• 物理化学 • 上一篇    下一篇

n-C20@TiO2-x 相变微胶囊及其调温羽绒的制备与性能

闫芳芳1, 徐乙梅1, 李林刚2,3, 余学永3, 蔡以兵1,3()   

  1. 1.江南大学生态纺织教育部重点实验室, 无锡 214122
    2.皖西学院材料与化工学院, 六安 237012
    3.安徽省生物蛋白纤维复合材料工程研究中心, 六安 237012
  • 收稿日期:2023-12-08 出版日期:2024-04-10 发布日期:2024-03-06
  • 通讯作者: 蔡以兵 E-mail:yibingcai@jiangnan.edu.cn
  • 基金资助:
    江苏省第六期“333”高层次人才培养工程[批准号: (2022)3-16-216]、 装备预研教育部联合基金(8091B022202);六安市海洋羽毛有限公司产学研合作项目(210187)

Preparation and Properties of n-C20@TiO2-x Phase Change Microcapsules and Thermoregulated Down Feather

YAN Fangfang1, XU Yimei1, LI Lingang2,3, YU Xueyong3, CAI Yibing1,3()   

  1. 1.Key Laboratory of Eco?Textiles of the Ministry of Education,Jiangnan University,Wuxi 214122,China
    2.College of Materials and Chemical Engineering,West Anhui University,Lu’an 237012,China
    3.Anhui Engineering Research Center for Bioprotein Fiber Composites,Lu’an,237012,China
  • Received:2023-12-08 Online:2024-04-10 Published:2024-03-06
  • Contact: CAI Yibing E-mail:yibingcai@jiangnan.edu.cn
  • Supported by:
    the Sixth “333 High-level Talents Training Project” of Jiangsu Province, China[No, (2022)3-16-216], the Equipment Pre-research Joint Fund of Ministry of Education, China(8091B022202);the Production and Research Cooperation Project of Lu'an Ocean Feather Co., Ltd., China(210187)

摘要:

通过溶胶-凝胶法制备了以二氧化钛(TiO2)为壳材、 正二十烷(n-C20)为芯材的相变微胶囊n-C20@TiO2, 利用水合肼(N2H4·H2O)溶液对其外壳TiO2进行还原反应得到了微胶囊n-C20@TiO2-x, 随后以水性聚氨酯(WPU)为介质, 将羽绒(DF)与n-C20@TiO2-x 结合制得蓄热调温羽绒n-C20@TiO2-x /DF. 采用傅里叶变换红外光谱(FTIR)、 场发射扫描电子显微镜(FESEM)、 X射线衍射仪(XRD)、 X射线光电子能谱(XPS)和差示扫描量热仪(DSC)等对相变微胶囊及n-C20@TiO2-x /DF的形貌结构和热性能进行表征. 结果表明, n-C20@TiO2-x 粒径约为309 nm, 热焓值由改性前的80.2 J/g(n-C20@TiO2)提升至106.1 J/g, 并呈现出优异的热稳定性. 当n-C20@TiO2-x 添加量为30%时制备的调温羽绒热焓值为18.7 J/g, 且经过5次水洗后仍可达到10.6 J/g. 本实验为微胶囊的改性与功能性羽绒材料的研究提供了一种策略, 有利于相变材料在传统纺织领域的拓展应用.

关键词: 相变微胶囊, 二氧化钛, 羽绒, 储热性能

Abstract:

The phase change microcapsule of n-C20@TiO2 with titanium dioxide(TiO2) as shell and n-eicosane (n-C20) as core was prepared through sol-gel method. The microcapsule of n-C20@TiO2-x was obtained by reduction reaction on TiO2 shell with hydrazine hydrate(N2H4·H2O) solution. Then, down feather(DF) with thermal storage and temperature regulation(n-C20@TiO2-x /DF) was fabricated by combining with n-C20@TiO2-x using waterborne polyurethane(WPU) as medium. The structural morphology and thermal properties of microencapsulated phase change materials(MEPCMs) and n-C20@TiO2-x /DF were characterized by Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy(FESEM), X-ray diffractometer(XRD), X-ray photoelectron spectroscopy(XPS) and differential scanning calorimetry(DSC), etc.. The results showed that the particle size of n-C20@TiO2-x was about 309 nm, and heat enthalpy was increased from 80.2 J/g(n-C20@TiO2) before modification to 106.1 J/g, which exhibited good thermal stability. The heat enthalpy of obtained thermoregulated DF with 30% n-C20@TiO2-x was ca. 18.7 J/g, and could still reach 10.6 J/g after 5 times of washing. It provided a strategy for the investigation of microcapsule modification and functional down feather materials, which was conducive to broaden the application of phase change materials in the traditional textile field.

Key words: Phase change microcapsule, Titanium dioxide, Down feather, Thermal energy storage property

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