Research and development of a fireproof coating under low-temperature conditions for ballistite fuel for a main rocket engine

Abstract

This paper presents the results of manufacturing an inhibitor layer for double-base propellant grain, with 3.5% dinitrotoluene. Curing system based on polybutylmetaacrylate and unsaturated polyester. Optimal technology parameters: curing temperature 45-50^oC, curing time is 12-16 hours, diethylaniline content 0.5-1%. The post-curing material has high mechanical properties (tensile strength up to 16.2 MPa, fuel adhesion strength - flame retardant shell up to 3.8 MPa). Static and burning testing results at the Institute of Propellants and Explosives, General Department of
Defence Industry meet the requirements. The research results are an important step forward in combining scientific theory and practice in manufacturing fireproof shells for ballistite fuel ingots at low temperature, supplementing existing technologies in Vietnam, and meeting the requirements of rocket industry development in the coming time.