A modified 360° netting vein bionic structure is proposed to improve the thermal properties of the composite. The influence of the fillers’ distributed configuration on the composite thermal conductivity is analyzed with finite element method to optimize the filling ratio, filling angle and distributed form. With the purity and prewetting processes, the surface roughness and wetting property of SiC nano-fiber (SiC_nf) is improved. By adjusting the magnetic stirrer speed, the viscosity of Polyimide (PI) and filling ratio, a configuration of SiC_nf in vertical direction is achieved for transferring heat and relieving stress effectively. Cu pillar serving as the main vein is fabricated with photography and electroplating. The thermal conductivity increases more than 40 times comparing with the pure PI. After mechanical loading test, fillers and Cu pillar are still reliable. Thus, this design has potential for transferring heat and relieving stress, just liking leaf vein system.

提出了一种改进的360°网状仿生结构，以改善复合材料的热性能。通过有限元方法分析了填料的分布形态对复合材料导热系数的影响，优化了填料比，填料角度和分布形式。通过纯度和预润湿工艺，可改善SiC纳米纤维（SiC _nf）的表面粗糙度和润湿性能。通过调节磁力搅拌器的转速，聚酰亚胺（PI）的粘度和填充率，可制成SiC _nf在垂直方向上实现了有效的传热和缓解应力。铜柱作为主要静脉是通过照相和电镀制成的。与纯PI相比，导热系数增加了40倍以上。经过机械负载测试后，填料和铜柱仍然可靠。因此，该设计具有像叶脉系统那样传递热量和减轻应力的潜力。