固体推进剂用新型 Schiff 碱类高效键合剂的 合成及性能表征

In order to improve the mechanical properties of HTPB four component and CL-20/GAP propellants and solve the problem of “dewetting” at the interface of the novel propellant filler matrix, a new Schiff base bonding agent was designed and synthesized. The bonding effect and mechanical properties of the propellant were characterized by Fourier infrared spectroscopy, scanning electron microscopy and universal material tensioning machine. The results showed that the synthesized new Schiff base bonding agent contained the essential functional groups of the bonding agent and had obvious bonding on the AP surface. The new Schiff base bonding agent was expected to replace the toxic MAPO and significantly improve the mechanical properties of HTPB four component propellant, the strength of HTPB four component propellant reached 0.7MPa, and the elongation was greater than 55% at room temperature. The elongation at high and low temperature are greater than 50% and 60% respectively. The processing performance of HTPB four component propellants can be significantly improved. In CL-20/GAP propellant, the new Schiff base bonding agent can improve the strength and elongation of the propellant at the same time.