Carbon nanotubes (CNTs) can be used to improve the thermal and mechanical properties of composites owing to their excellent characteristics. Methyl vinyl silicone rubber matrix composites filled with alumina (Al₂O₃) powder and CNTs were fabricated through a conventional mechanical blending method. The effects of the mass fraction, surface modification of Al₂O₃ powder and the addition of CNTs on the thermal conductivity, Young's modulus and hardness of the composites were investigated. Results show that a higher mass fraction of the Al₂O₃ powder results in a higher thermal conductivity of the composites. When the mass fraction of Al₂O₃ powder is fixed, the thermal conductivity, Young's modulus and hardness of the composites are improved obviously by surface modification of Al₂O₃ powder and adding a small amount of CNTs. The combination of the modified Al₂O₃ filler and CNTs filler can synergistically enhance the interfacial interaction between the fillers and rubber matrix by the formation of better heat conduction channels and network structures in the rubber matrix, thereby improving the thermal conductivity and mechanical properties of the composites.

碳纳米管（CNT）由于其优异的特性而可用于改善复合材料的热性能和机械性能。通过常规机械混合法制备了填充有氧化铝（Al ₂ O ₃）粉末和碳纳米管的甲基乙烯基硅橡胶基复合材料。研究了质量分数，Al ₂ O ₃粉末的表面改性以及碳纳米管的添加对复合材料的导热系数，杨氏模量和硬度的影响。结果表明，较高质量分数的Al ₂ O ₃粉末导致复合材料的较高导热性。当Al ₂ O ₃的质量分数粉末固定后，通过对Al ₂ O ₃粉末进行表面改性和添加少量的CNT，可以明显提高复合材料的导热系数，杨氏模量和硬度。改性Al ₂ O ₃填料与CNTs填料的结合可以通过在橡胶基体中形成更好的导热通道和网络结构来协同增强填料与橡胶基体的界面相互作用，从而改善橡胶的导热性能和力学性能。复合材料。