Research on compressing the insulator of the rocket motor-bottom of the barriers clearing weapon from carbon fabric reinforced phenolic composite material

Abstract

The rocket motor of the barriers clearing weapon operates in conditions of high temperature and pressure of combustible gas for over 4 seconds, in which, the rocket motor-bottom (where bonding with nozzles) is the most severe, needs to be heat protected. The carbon fabric-reinforced phenolic composite material has lots of outgoing advantages including high heat resistance and char yiled, as well as keeping the char layer configuration to resist the heat flux and erosion. To make products from this material, it is necessary to use the hot compression process. From the design requirements of the insulator for the rocket motor-bottom, the authors determined the objective was to find the technological basis and experimentally determine the reasonable processing regime to manufacture. On the basis of analyzing thermodynamic properties of hexamine cured phenolic resin, a series of experiments were performed to stabilize the production process. The products have been manufactured and tested for satisfactory performance.