OPTIMIZATION OF COATINGS FOR THE M205 NON METALLIC CARTRIDGE CASE FOR ALL TEMPERATURE USE

摘要

The porous nature of the case substrate emphasizes the possible importance of this problem in coating technology. Solvent containing poly-mer can penetrate some particularly porous substrate regions more readily than others thus creating uniformity problems via preferential resin absorp¬tion, etc. Reduction of the porosity of the substrate by closing the holes is equally objectionable because the pressure of the pores has been found es¬sential for proper ballistic performance especially as regards residue. Therefore two systems to prevent pore closing have been developed. Thus solventless coatings were considered to present a potentially viable alter¬native to solvent systems.