▎ 摘　　要

NOVELTY - Insulating and thermally conductive polymer complex material comprises benzoxazole polymer nanofibers, and a thermally conductive filler complex with the benzoxazole polymer nanofibers through pi - pi action. The mass ratio of the thermally conductive filler to the polybenzoxazole polymer nanofiber is 50:100-100:1. The material has a uniaxially oriented structure between layers, inner heat conducting coefficient is 46 W/m/K or more, and further has an inter-surface thermal conductivity of 6 W/m/K or more. USE - The material is useful in aerospace, military or electronic information fields as a thermally conductive, flame-retardant or wear-resistant material (claimed). ADVANTAGE - The material: has non-combustible in the UL 94 vertical combustion test, limiting oxygen index test value about not less than 70%, and thermal weight loss temperature higher than 600 degrees C, and high thermal conductivity; still maintains structural integrity after being burned under a high temperature ( not greater than 700 degrees C) flame for 30 minutes; maximizes the overlap area of the thermally conductive filler; and provides more thermally conductive connection points. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for preparing the insulating and thermally conductive polymer complex material, comprising (i) blending the benzoxazole polymer nanofibers and the thermally conductive filler by the solution blending method to obtain a blended solution, removing most of the solvent in the blend solution to obtain a complex material containing a small amount of solvent, (ii) performing hot pressing orientation to the complex material, and removing the redundant solvent, and (iii) heating and crosslinking on the complex material.