Experimental Study on Thermal Aging Performance of an RDX Based Booster

Abstract

YC-1 booster (96.5% RDX, 3% F2641 and 0.5% graphite) was selected as the research object. Accelerated aging of YC-1 was carried out by 71°C thermal aging tests. The size changes of samples before and after thermal aging were measured. The initiation ability and shock sensitivity of the samples before and after accelerated aging were tested by steel compression test and SSGT small gap test. Through the establishment of equal proportion impact dynamics calculation model, the propagation law of shock wave generated by the explosion of A-= 9 \* ROMANIX-= 1 \* ROMANI was calculated. Test and calculation results show that: The diameter and height of samples increase with the increase of aging time. There was no significant change in the initiation ability of the samples, and the shock wave sensitivity increases first and then decreases with the increase of thermal aging time. The critical thickness of the gap corresponding to the samples aged 0 day, 4days, 19 days, 38 days and 76 days was 6.9mm, 7.0mm, 7.5mm, 8.1mm and 7.8mm, respectively. The corresponding shock wave pressure (without considering the interface reflection) in the gap was 2.91GPa, 2.85 GPa, 2.60 GPa, 2.40 GPa and 2.50 GPa respectively.