Influences of hydroxylation modifications of lecithin on its surface tension and viscosity of PBX slurry

摘要

? 2023 Elsevier B.V.Reducing viscosity is an important factor affecting the dispersion and forming process of polymer bonded explosive (PBX). In this study, lecithin was modified by hydroxyl reaction in order to enhance its viscosity reduction effect. The structure of hydroxylated lecithin was confirmed by nuclear magnetic resonance spectroscopy (NMR), infrared spectrum (IR) and iodine values. The decrease of surface tension of styrene and the decrease of viscosity of HMX-based PBX slurry before and after modification were analyzed. The results showed that hydroxylated lecithin had better effect on reducing surface tension and viscosity.