Abstract
In this paper, the thermal stability of epoxy adhesive castings and their compatibility with UDMH were studied. The influence of UDMH on tensile shear strength was investigated, and the simulated leakage plugging of UDMH tank was carried out. The results show that the thermal decomposition temperature of epoxy adhesive is 200 °C, which meets the requirement of heat resistance for leakage plugging. Epoxy resin castings have good compatibility with UDMH. The mass change rate of epoxy resin castings is less than 7% after soaking at room temperature for 15 days, and the surface of the specimens is smooth and free of cracks after immersion. The tensile shear strength of UDMH wetting on bonded metal surface increases a little. With the aid of clamping fixture, the simulated plugging of weld seam and sand whole defects of UDMH tank can be realized effectively.
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