导热聚合物具有耐化学腐蚀性、力学及抗疲劳性能优异，且轻质、易成型加工等特点，广泛应用于航空航天、国防、电子电气等领域。聚合物自身导热性能不佳，一般通过添加高导热粒子来制备绝缘高导热聚合物复合材料，但存在导热性能提升有限且力学性能恶化等缺点。本项目基于聚合物传热过程主要通过晶格振动方式进行传输的特性，利用外界应力场诱导结晶聚合物形成一个由“互锁”shish-kebab结构组成的取向共连续网络结构，其中shish结构由取向分子链组成，kebab结构吸附在取向分子链上成核生长形成连续片晶结构。本项目拟研究该取向共连续网络结构对热扩散能力的影响，探索导热载体在取向共连续网络结构中的输运规律及热扩散机理，揭示聚合物导热性能和力学性能随取向网络结构的含量、结晶度及取向度等的变化规律，建立聚合物“互锁”网络结构与导热性能之间的关系。本项目可望为制备聚合物基高导热材料提供新的思路和方法。

Thermal conductive polymer has been widely used in the aerospace, electronics and national defense industries et al. due to its superior electrical insulation, mechanical properties, fatigue resistance, light and easy processing et al. However, the thermal conductivity of polymer is very low because of the phonon scattering resulting from the structure and interfaces defects. Therefore, it is necessary to tailor the structure of polymer to prevent the phonons from scattering. Hence, it is of importance to study the effect of crystal structure and morphology induced by stress on the thermal conductivity of polymer. In this project, we mainly focus on the “shish-kebab” structure induced by the stress, and the effect of this stretching structure on the thermal conductivity of polymer; explore the thermal diffusive mechanism of polymer with the orientation structure; investigate the effect of the orientation structure content, crystallinity and degree of orientation on the thermal conductivity and mechanical properties of polymer and establish the relationship between mechanical and physical properties and orientation structure induced by stress. The results obtained here could be served for the preparation of polymer with high thermal conductivity