针对传统温致变色微胶囊制备方法存在工艺复杂、对环境不友好且稳定性较差等问题,以热敏红、十二醇、双酚AF为复合芯材,聚醚砜为壁材,采用溶剂挥发法制备了温致变色微胶囊,通过扫描电子显微镜、动态光散射仪、傅里叶变换红外光谱仪、热重分析仪、差示扫描量热仪对其微观形貌、粒径分布、结构及热稳定性进行了表征与测试。结果表明,制备的温致变色微胶囊具有良好的热稳定性和储能效果。通过测试总色差值和相对色差值,得出该微胶囊变色温度在15～20℃、变色温度范围为10～30℃、且具备变色循环次数高、耐酸碱、耐溶剂、贮存稳定性能好等特点。
To address the drawbacks of traditional thermochromic microcapsule preparation methods,such as process complexity,environmental unfriendliness,and poor stability,thermochromic microcapsules were prepared via the solvent evaporation method with polyethersulfone as the shell material and thermochromc red,dodecanol and bisphenol AF as the composite core materials.Scanning electron microscopy (SEM),dynamic light scattering (DLS),Fourier transform infrared spectroscopy (FT-IR),thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) were employed to characterize and test the microscopic morphology,particle size distribution,structure,and thermal stability of the prepared microcapsules.The results revealed that the prepared thermochromic microcapsule possessed good thermal stability and energy storage properties.By measuring the total color difference(ΔE) and relative color difference(ΔEab),it was found that the temperature range for color change was between 15℃ and 20℃,with a broader detectable range of 10℃ to 30℃.The microcapsules exhibited high color change cycle counts,resistance to acids and bases,solvent resistance,and good storage stability.
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基金资助
江西省教育厅科学技术研究项目(GJJ191557)
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