Zou Xiaobin, Zhang Wenguo, Gu Yongjun, Fu Xiuchong, Zhang Zehao, Ge Zhen, Luo Yunjun
School of Materials Science and Engineering, Beijing Institute of Technology Beijing 100081 China
Shanxi North Xing'an Chemical Industry Co., Ltd. Shanxi 030008 China.
RSC Adv. 2020 Nov 25;10(70):42883-42889. doi: 10.1039/d0ra08370d. eCollection 2020 Nov 23.
To improve the low-temperature mechanical properties of double-base propellants, glycidyl azide polymer-energetic thermoplastic elastomer (GAP-ETPE), polyether copolyimide-thermoplastic elastomer (PEBA-TPE), 1,2-polybutadiene thermoplastic elastomer (PB-TPE), and ethylene oxide-tetrahydrofuran copolyester-thermoplastic elastomer (PET-TPE) were used to modify them. The effects of these four thermoplastic elastomers (TPEs) on the energy properties of double-base propellants were studied theoretical calculations. The mechanical properties of double-base propellants at high, low, and room temperature were compared, and their thermal properties were analyzed. It was found that GAP-ETPE had a significant effect on improving the low-temperature mechanical properties of double-base propellants, with the maximum tensile strength and maximum elongation at a low temperature for the double-base propellant reaching 43.30 MPa and 6.24%, respectively.
为改善双基推进剂的低温力学性能，采用缩水甘油叠氮聚合物-热塑性弹性体（GAP-ETPE）、聚醚共聚酰亚胺-热塑性弹性体（PEBA-TPE）、1,2-聚丁二烯热塑性弹性体（PB-TPE）和环氧乙烷-四氢呋喃共聚酯-热塑性弹性体（PET-TPE）对其进行改性。通过理论计算研究了这四种热塑性弹性体（TPE）对双基推进剂能量性能的影响。比较了双基推进剂在高温、低温和室温下的力学性能，并对其热性能进行了分析。结果发现，GAP-ETPE对改善双基推进剂的低温力学性能有显著效果，双基推进剂在低温下的最大拉伸强度和最大伸长率分别达到43.30MPa和6.24%。
