Abstract:

To solve the problems of moisture absorption and aggregation of superfine AP (ammonium per- chlorate) and the aggregation of nano-sized catalysts in composite propellants, the CuO/ AP/ HTPB (hy- droxyl-terminated polybutadiene) nanocomposites are prepared without introduction of other non-compo- nents of the composite propellants. Firstly, the CuO/ AP nanocomposites are prepared by a novel ceramic membrane anti-solvent crystallization method, and then the CuO/ AP/ HTPB nanocomposites are prepared by solvent evaporating method. The size, morphology and structure of the resultant nanocomposites are characterized by SEM, HRTEM, FT-IR, ICP and XRD. The moisture absorption property of the nano- composites is also investigated. The results show that the CuO/ AP/ HTPB nanocomposites particles are the hexahedrons with the size of no more than 6 滋m, and CuO nanoparticles exhibit better dispersion. The outer compact HTPB shell could prevent the moisture absorption of the superfine AP effectively.

Key words: material synthesis and processing technology, CuO, AP, HTPB, composite materal, propellant