n-C20@TiO2-x相变微胶囊及其调温羽绒的制备与性能
Preparation and Properties of n-C20@TiO2-x Phase Change Microcapsules and Thermoregulated Down Feather
闫芳芳 1徐乙梅 1李林刚 2余学永 3蔡以兵4
作者信息
- 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;安徽省生物蛋白纤维复合材料工程研究中心,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
- 4. 江南大学生态纺织教育部重点实验室,无锡 214122;安徽省生物蛋白纤维复合材料工程研究中心,六安 237012
- 折叠
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.
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.
关键词
相变微胶囊/二氧化钛/羽绒/储热性能Key words
Phase change microcapsule/Titanium dioxide/Down feather/Thermal energy storage property引用本文复制引用
基金项目
江苏省"333"高层次人才培养工程项目(第六期)(20223-16-216)
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)
出版年
2024
国家科技期刊平台
NSTL
万方数据