含纳米石墨的相变微胶囊的合成与表征

Y. Shih, Hong-Hao Chen
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引用次数: 0

摘要

本研究采用溶胶-凝胶法对相变微胶囊进行改性。相变材料(PCM)被聚合物外壳包裹,以减少固液转换过程中的泄漏。此外,外壳中还引入了纳米石墨颗粒(NGP),以增加其导热性。所得微胶囊的粒径和焓值分别约为 3 μm 和 150.3 J/g。结果表明,加入 NGP 后,制备的微胶囊中 PCM 的封装效率提高,PCM 的结晶速度加快。将得到的微胶囊和木粉加入高密度聚乙烯(HDPE)中,形成木塑复合材料(WPC)。结果表明,木塑复合材料的拉伸强度和冲击强度分别为 24.1 兆帕和 48.7 焦耳/米。此外,还观察到添加这些相变微胶囊可以改善高密度聚乙烯的散热性能并加快热扩散速度。
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Synthesis and Characterization of Phase Change Microcapsules Containing Nano-Graphite
This study uses the sol-gel method to modify the phase change microcapsules. The phase change material (PCM) is encapsulated by a polymer shell to reduce the leakage in the solid-liquid transition. Furthermore, the nano-graphite particle (NGP) is introduced into the shell to increase its thermal conductivity. The particle size and enthalpy value of the obtained microcapsules are approximately 3 μm and 150.3 J/g, respectively. The results show that the encapsulation efficiency of PCM in the prepared microcapsules is increased and the crystallization rate of PCM becomes faster when the NGP is added. The obtained microcapsules and wood flour are incorporated into high-density polyethylene (HDPE) to form a wood-plastic composite (WPC). The results indicate that the tensile and impact strengths of the WPC are 24.1 MPa and 48.7 J/m, respectively. Moreover, it is observed that the addition of these phase-change microcapsules can improve the heat dissipation of HDPE and accelerate the speed of thermal diffusion.
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来源期刊
Advances in Technology Innovation
Advances in Technology Innovation Energy-Energy Engineering and Power Technology
CiteScore
1.90
自引率
0.00%
发文量
18
审稿时长
12 weeks
期刊最新文献
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