Preparation of MWCNTs/Fluoropolymer Nanocoposites Materials and the Influence on Properties of HMX-based PBX

摘要

In this paper, study on the preparation of MWCNTs/fluoropolymer nanocomposite material was carried out, and HMX-based polymer bonded explosive was prepared by using this new nanocomposite material as binder. The research coverd the influences of MWCNTs/fluoropolymer binder on the mechanical properties and the thermal property of HMX-based PBX. The appearance of MWCNTs/fuoropolymer was tested by scanning elctron microscopy (SEM), the mechanical properties were tested by material testing machine, and the thermal property was measured by thermal conductive machine. Results indicated that MWCNTs could significantly improved their disperdion in fluoridated polymer under the help of ultrasonic vibrations and surfactant. The mechanical propertie and thermal propery were dramatically improved when 0.05g MWCNTs were added into 100 g PBX. Compared with PBX uesing pure fluoridated polymer, the compression strength and elongation of PBX using MWCNTs/fluoropolymer system were increased by 9.0% and 16.8% respectively, the tensile strength and elongation at break were increased by 16.7% and 64.1-%, and the thermal conductivity increased from 0.51 W. m~1. K~(-1) to 0.69 W. m~(-1). K~1. The compositive property was obviously improved.