本研究主旨為探討石墨烯之添加對於高分子基粉末塗層之換熱效率的影響。在本研究中，將環氧聚脂樹脂與石墨烯共混以提高其導熱性和散熱效率，使得石墨烯塗層的導熱率增加了167倍，係石墨烯促成粉體塗料與鋁板間黏合性更好所導致。

接著，我們利用石墨烯散熱粉體塗料進一步驗證其對散熱性能的影響後發現，在強制對流換熱情況下，石墨烯塗層的輻射熱傳係數佔總熱傳熱傳係數的16%，顯示並非如先前研究所云可以忽略不計；而在自然對流熱傳的情況下，以ANOVA分析得到輻射熱傳係數與表面塗層與否之關聯性最大，此與實測石墨烯塗層在熱通量為16W時，表面溫度比裸鋁板（124.1°C）低 27.4°C相符。另外，自然對流換熱的情況下，石墨烯塗層的輻射熱傳係數佔總熱傳係數的33%，其影響之效果更大。這些結果表明，不僅在塗層中添加石墨烯奈米顆粒可以提高鋁板的輻射率，從而改善散熱效果，且輻射換熱的技術將是散熱未來之趨勢。

The main purpose of this research is to explore the influence of graphene addition on the heat transfer efficiency of polymer-based powder coatings. In this study, the epoxy polyester resin was blended with graphene to improve its thermal conductivity and heat dissipation efficiency, which increased the thermal conductivity of the graphene coating by 167 times. Graphene promotes the adhesion between the powder coating and the aluminum plate Better caused.

Next, we used graphene heat-dissipating powder coatings to further verify its impact on heat dissipation performance and found that in the case of forced convection heat transfer, the radiant heat flux of the graphene coating accounted for 16% of the total heat transfer, indicating that it is not true about radiation can be ignored in the previous research; and in the case of natural convection heat transfer, the ANOVA analysis shows that the radiant heat transfer coefficient has the greatest factor with the surface coating, this is the same as the measured heat flux of the graphene coating of 16W. In addition, in the case of natural convection heat transfer, the radiation heat transfer flux of the graphene coating accounts for 33% of the total heat transfer flux, these results show that not only adding graphene nanoparticles to the coating can increase the emissivity of the aluminum plate, thereby improving the heat dissipation effect, but also that the radiation heat exchange technology will be the future trend of heat dissipation.

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