Ramu Swaminathan, Senthilkumar Natarajan, Deepanraj Balakrishnan
Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu, 602105, India.
Department of Mechanical Engineering, College of Engineering, Prince Mohammad Bin Fahd University, Al Khobar, 31952, Saudi Arabia.
Recent Pat Nanotechnol. 2025;19(4):511-523. doi: 10.2174/0118722105296725240308094344.
Two-phase hybrid mode thermal interface materials were created and characterized for mechanical properties, thermal conductivity, and wear behaviour. Therefore, the ultimate goal of this current research was to use alkali-treated glass fibre and other allotropes to produce high-performance two-phase thermal interface materials that can be patented for engineering applications.
Three different polymer composites were prepared to contain 20 vol.% alkalies (NaOH) treated e-glass fibre (E) and epoxy as a matrix with varying proportions of multi-walled carbon nanotube (MWCNT), graphene (G), copper oxide (C). The one-phase material contained epoxy+20%e-glass+1%MWCNT (EMGC1), the two-phase hybrid composite contained epoxy+20%e-glass+1%MWCNT+1%graphene+1%CuO (EMGC2), and two-phase material contained epoxy+20%e-glass+1%graphene+1%CuO (EMGC3). Vacuum bagging method was used for fabricating the composites.
The higher thermal conductivity observed was 0.3466 W/mK for EMGC2, the alkalitreated glass fibre/hybrid mode nanofillers epoxy matrix composite was mechanically tougher than the other two composites (EMGC1 & EMGC3). Scanning electron microscopy analysis revealed the fine filler dispersion and homogenous interaction with the glass fibre/epoxy resin composite of the upper and lower zone, which also revealed the defective zone, fibre elongation, fibre/filler breakages, and filler leached surfaces.
Finally, it was concluded that the hybrid mode two-phased structure EMGC2 epoxy matrix composite replicated the maximum thermal conductivity, mechanical properties, and wear properties of the other two specimens.
制备了两相混合模式热界面材料，并对其机械性能、热导率和磨损行为进行了表征。因此，本研究的最终目标是使用碱处理玻璃纤维和其他同素异形体来生产高性能的两相热界面材料，以便在工程应用中获得专利。
制备了三种不同的聚合物复合材料，其中包含20体积%的碱（NaOH）处理的E玻璃纤维（E），并以环氧树脂为基体，添加不同比例的多壁碳纳米管（MWCNT）、石墨烯（G）、氧化铜（C）。单相材料包含环氧树脂+20%E玻璃纤维+1%MWCNT（EMGC1），两相混合复合材料包含环氧树脂+20%E玻璃纤维+1%MWCNT+1%石墨烯+1%CuO（EMGC2），两相材料包含环氧树脂+20%E玻璃纤维+1%石墨烯+1%CuO（EMGC3）。采用真空袋法制备复合材料。
观察到EMGC2的热导率较高，为0.3466W/mK，碱处理玻璃纤维/混合模式纳米填料环氧树脂基复合材料在机械性能上比其他两种复合材料（EMGC1和EMGC3）更坚韧。扫描电子显微镜分析揭示了上下区域的玻璃纤维/环氧树脂复合材料中填料的精细分散和均匀相互作用，同时也揭示了缺陷区域、纤维伸长、纤维/填料断裂以及填料浸出表面。
最后得出结论，混合模式两相结构的EMGC2环氧树脂基复合材料在热导率、机械性能和磨损性能方面优于其他两个样品。
