含能材料2025，Vol.33Issue(2)：188-197,10.DOI:10.11943/CJEM2024277
半互穿网络HAN基电控固体推进剂力学性能及燃烧启停性能
Mechanical Properties and Combustion Start-Stop Performance of Semi-Interpenetrating-Network HAN Based Electrically Controlled Solid Propellants
奈慧敏 1刘富涵 1王斌 1夏德斌 1张健 1林凯峰 1杨玉林1
作者信息
- 1. 哈尔滨工业大学化工与化学学院,黑龙江 哈尔滨 150000
- 折叠
摘要
Abstract
To explore the effects of the degree of polymerization of polyvinyl alcohol(PVA)as a binder,the content of boronic acid(HB)as a crosslinking agent,polyaniline(PANI)and chitosan(CTS)as an additive on the mechanical properties and com-bustion start-stop performance of hydroxylamine nitrate based electrically controlled solid propellants(HAN-ECSP),the samples were prepared by the swelling method.The mechanical properties and combustion start-stop performance were studied by ten-sile test,combustion start-stop performance test,X-ray diffraction(XRD),Fourier transform infrared attenuated total reflection(FTIR-ATR),and optical electron microscopy.The findings indicate that there is minimal variation in crystallinity among PVA samples with different degrees of polymerization.But when the polymerization degree of PVA is 2400±50,the—OH content is relatively high and the mechanical properties are better.The HB content influences the crosslinking density of PVA.PVA2499-20%HB exhibits a relatively low density and uneven surface depressions.PVA2499-18%HB demonstrates superior mechanical proper-ties,boasting a tensile strength of 2.36 MPa and a tensile elongation of 482.92%.However,it is highly corrosive to the copper electrode.Therefore,an initial network is formed by cross-linking 8%HB with PVA.The PANI or CTS is added to form a semi-interpenetrating polymer network with PVA.The tensile strength of the PVA2499-8%HB-2%PANI propellant is 1.03 MPa,and its elongation at break is 432.85%.The tensile strength of the PVA2499-8%HB-1%CTS propellant is 0.87 MPa,and its elonga-tion at break is 302.28%.Both PANI and CTS addition to the ECSP can achieve combustion start-stop,and the maximum burning temperature can reach 800℃.关键词
HAN-ECSP力学性能/燃烧启停性能/聚乙烯醇聚合度/HB含量/半互穿聚合物网络Key words
mechanical property of HAN-ECSP/combustion start-stop performance/polyvinyl alcohol polymerization degree/HB content/semi-interpenetrating polymer network分类
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奈慧敏,刘富涵,王斌,夏德斌,张健,林凯峰,杨玉林..半互穿网络HAN基电控固体推进剂力学性能及燃烧启停性能[J].含能材料,2025,33(2):188-197,10.
