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| Natural Environmental Accelerated Aging Test Method of HTPB Propellant |
| Received:October 22, 2018 Revised:December 25, 2018 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2018.12.019 |
| KeyWord:HTPB propellant outdoor thermal cycling natural environment accelerated test device natural environment accelerated aging test method warehouse storage test method Storage aging performance |
| Author | Institution |
| WEI Xiao-qin |
Natural Environmental Test and Research Center of Science, No.59 Institute of Ordnance Industry China, Chongqing , China |
| WU Hu-lin |
Natural Environmental Test and Research Center of Science, No.59 Institute of Ordnance Industry China, Chongqing , China |
| ZHANG Lun-wu |
Natural Environmental Test and Research Center of Science, No.59 Institute of Ordnance Industry China, Chongqing , China |
| YANG Wan-jun |
Natural Environmental Test and Research Center of Science, No.59 Institute of Ordnance Industry China, Chongqing , China |
| LI Di-fan |
Natural Environmental Test and Research Center of Science, No.59 Institute of Ordnance Industry China, Chongqing , China |
| YANG Xiao-kui |
Natural Environmental Test and Research Center of Science, No.59 Institute of Ordnance Industry China, Chongqing , China |
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| Abstract: |
| Objective To establish a natural environment accelerated aging test method for HTPB propellant. Methods A set of outdoor thermal cycle natural environment accelerated aging test device was developed, which could simulate and enhance the thermal effect and the impact effect of temperature difference between day and night of solar radiation on HTPB propellant, and maintain the characteristics of daily and seasonal temperature cycle. The HTPB propellant natural environment accelerated aging test and its verification test were carried out with this device in the outdoor exposure field of Wanning Experimental Station in Hainan. The maximum temperature of the test was set to not exceed 70 ℃. HTPB propellant warehouse storage test was carried out at the same time. The simulation, acceleration, reproducibility of the natural environmental accelerated aging test method was evaluated to obtain its credibility. Results As the aging time was extended, the maximum tensile strength retention rate decreased, which could be used as a sensitive mechanical parameter of HTPB propellant. Compared with the maximum tensile strength retention rate of the propellant stored in the warehouse at different times, the confidence level was 99%. The Spearman rank correlation coefficient of the two test methods was 0.93. The acceleration rate of natural environment accelerated aging test method for warehouse storage test method was 5 times. And the natural environment accelerated aging test had good reproducibility. Conclusion A simple, high-simulation and high-acceleration natural environment accelerated aging test method suitable for HTPB propellant is established. It could reproduce the change of mechanical properties of HTPB propellant in actual warehouse. |
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