A kind of preparation method of conductive polymer composite material

Abstract

The invention discloses a preparation method of a conductive polymer composite material. The metal in the solid-liquid coexistence phase is mixed with a polymer material, and processed and shaped to prepare the conductive polymer composite material. In this method, the metal is in the solid-liquid two-phase coexistence area of ​​the metal phase diagram, and the solid-liquid coexistence phase is combined with the polymer matrix to realize the formation of a continuous contact phase of the metal in the polymer matrix, thereby achieving high conductivity of the material, and It is easy to process and shape; use the metal phase diagram to control the solid phase ratio of the metal through the metal composition, processing temperature and the metal phase diagram lever law, so that the performance of the composite material is easy to control, and it can be realized from 1×10 ⁵ Ω·cm to 1×10 ^‑7 Changes in Ω·cm.

Description

technical field [0001] The invention relates to a preparation method of a polymer composite material, in particular to a preparation method of a conductive polymer composite material. Background technique [0002] Conductive polymer usually refers to the conductivity of 10 -6 Polymer materials above S / cm have been widely used in modern electronic industries such as electronic sensors, displays, automotive electronics, and batteries. Due to the wide range of raw materials and simple preparation process, the physical mixing method has become the most important preparation method of conductive polymers. In the physical mixing method, metal materials (such as copper powder, silver powder, aluminum powder, etc.) are often filled into the polymer matrix as conductive particles. However, traditional metal fillers only have two states of pure solid and pure liquid, and there is an obvious interface between the solid phase and the liquid phase, and the change of properties at the i...

AI Technical Summary

Problems solved by technology

However, traditional metal fillers only have two states of pure solid and pure liquid, and there is an obvious interface between the solid phase and the liquid phase, and the change of properties at the interface is dramatic

Under processing conditions, pure liquid filling is non-conductive, pure solid filling has low conductivity (>1Ω·cm), and poor mechanical properties

Images