Scholarlink

<p>In this study, the polyurethane materials with polyethylene glycol (PEG) segments were designed and prepared as the base material for phase change composite materials, and by incorporating paraffin and boron nitride (BN) into the materials, a series of high-enthalpy, high-thermal-conductivity phase change composite materials (PCCMs) were obtained, achieving efficient utilization of thermal energy. The thermal stability of PCCMs was analyzed through thermogravimetric analysis (TGA). X-ray diffraction (XRD), differential scanning calorimetry (DSC), accelerated thermal cycling tests, and scanning electron microscopy (SEM) were employed to study the microstructure, crystallinity, and energy storage properties of the prepared samples. The results indicated that the PAPI-PEG-PW-BN was successfully synthesized. The thermal conductivity of PAPI-PEG-PW-BN was improved by 155% to 160%, and it exhibited significant crystallinity, with a latent heat of approximately 183&#xa0;J g<sup>–1</sup>. After 1000 cycles of thermal cycling, the material demonstrated good thermal stability, due to the effects of PEG segments on paraffin. Additionally, the excellent photothermal conversion performance, energy storage capability, and thermal stability suggested a broad range of potential applications.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

A high-enthalpy, high-thermal-conductivity phase change polyurethane composite material

  • 期刊论文

  • 发表日期：

    2025年10月11日

查看全文
  • Changhui Liu,
  • Yi Xu,
  • Yanlong Shi,
  • Yunyun Yang

摘要

In this study, the polyurethane materials with polyethylene glycol (PEG) segments were designed and prepared as the base material for phase change composite materials, and by incorporating paraffin and boron nitride (BN) into the materials, a series of high-enthalpy, high-thermal-conductivity phase change composite materials (PCCMs) were obtained, achieving efficient utilization of thermal energy. The thermal stability of PCCMs was analyzed through thermogravimetric analysis (TGA). X-ray diffraction (XRD), differential scanning calorimetry (DSC), accelerated thermal cycling tests, and scanning electron microscopy (SEM) were employed to study the microstructure, crystallinity, and energy storage properties of the prepared samples. The results indicated that the PAPI-PEG-PW-BN was successfully synthesized. The thermal conductivity of PAPI-PEG-PW-BN was improved by 155% to 160%, and it exhibited significant crystallinity, with a latent heat of approximately 183 J g–1. After 1000 cycles of thermal cycling, the material demonstrated good thermal stability, due to the effects of PEG segments on paraffin. Additionally, the excellent photothermal conversion performance, energy storage capability, and thermal stability suggested a broad range of potential applications.