基于银包覆中空纳米SiO2微球的隔热涂层织物制备及性能研究
Research on the preparation and performance of heat-insulating coated fabrics based on silver-coated hollow Nano-SiO2 microspheres
郭立芸 1成欣毓 1张华鹏1
作者信息
- 1. 浙江理工大学浙江省纤维材料和加工技术研究重点实验室,杭州 310018
- 折叠
摘要
为提高锦纶织物的保暖隔热性能,采用3-巯丙基甲基二甲氧基硅烷(MPMDMS)对中空纳米SiO2微球进行表面改性,通过辅助化学镀银工艺制备银包覆中空纳米SiO2微球,将其与聚丙烯酸酯乳液混合后涂敷在锦纶织物表面,制备隔热涂层织物.采用扫描电子显微镜、X射线光电子能谱仪、傅里叶红外光谱仪等表征手段,探讨MPMDMS对中空纳米SiO2微球的表面改性机理,分析MPMDMS质量分数对微球表面镀银形貌的影响;通过FTIR红外光谱仪及红外热成像仪测试了涂层织物的热红外反射性能和隔热性能.结果表明:MPMDMS改性效果明显优于多巴胺(DA),经MPMDMS改性后的中空纳米SiO2微球表面,Ag生长更加均匀且覆盖率高;银包覆中空纳米SiO2微球单分散性良好并保持了较低的导热系数(0.06925 W/(m·K));涂层织物热红外反射率(6～14 μm)较锦纶织物提高了 30％,将涂层织物置于37 ℃热板上10 min后,涂层织物表面温度为30.6 ℃,比锦纶织物低5.1℃;涂层织物透湿性和抗菌性能良好.该研究可为提升锦纶织物的隔热性能提供一定的技术参考.
Abstract
To improve the thermal insulation performance of nylon fabrics,3-merca ptopropyl methyl dimethoxy silane(MPMDMS)was used to surface-modify the hollow nano-SiO2 microspheres,and silver-coated hollow nano-SiO2 microspheres prepared by the assisted chemical silver-plating process were mixed with polyacrylate emulsion and then the mixture was coated on the surface of the nylon fabrics to prepare heat-insulating coated fabrics.Scanning electron microscopy,X-ray photoelectron spectroscopy,Fourier infrared spectroscopy and other characterization means were used to explore the surface modification mechanism of the hollow nano-SiO2 microspheres by MPMDMS,and to analyze the effect of the mass fraction of MPMDMS on the surface morphology of silver coating of the microspheres;and the thermal infrared reflectance and thermal insulation properties of the coated fabrics were tested by FTIR infrared spectroscopy and infrared thermal imager.The results showed that:the modification effect of MPMDMS was significantly better than that of dopamine(DA),and the Ag growth on the surface of the MPMDMS-modified hollow nano-Si O2 microspheres was more uniform and with a higher coverage rate;the monodispersity of the silver-coated hollow nano-SiO2 microspheres was good and the thermal conductivity(0.06925 W/(m·K))was low;the thermal infrared reflectance of the coated fabric(6-14 μm)was increased by 30％compared with that of nylon fabrics,and the surface temperature of the coated fabric was 30.6 ℃ after placing the coated fabric on a 37 ℃ hot plate for 10 min,which was 5.1 ℃ lower than that of nylon fabric;the coated fabric was good in moisture permeability and antimicrobial performance.This study can provide some technical reference for improving the thermal insulation performance of nylon fabrics.
关键词
中空二氧化硅/巯基表面改性/化学镀银/隔热织物/涂层Key words
hollow silica/sulfhydryl surface modification/chemical silver plating/insulating fabrics/coatings引用本文复制引用
出版年
2024
NETL
NSTL
万方数据