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

作　　者：奈慧敏 刘富涵 王斌 夏德斌 张健 林凯峰 杨玉林 NAI Hui-min;LIU Fu-han;WANG Bin;XIA De-bin;ZHANG Jian;LIN Kai-feng;YANG Yu-lin(School of Chemistry and Chemical Engineering,Harbin Institute of Technology,Harbin 150000,China)

机构地区：[1]哈尔滨工业大学化工与化学学院,黑龙江哈尔滨150000

出　　处：《含能材料》2025年第2期188-197,共10页Chinese Journal of Energetic Materials

摘　　要：为了探究黏结剂聚乙烯醇(PVA)聚合度、交联剂硼酸(HB)含量、添加剂聚苯胺(PANI)以及壳聚糖(CTS)对硝酸羟胺基电控固体推进剂(HAN-ECSP)力学性能和燃烧启停性能的影响,采用溶胀法制备试样,通过拉伸测试、燃烧启停性能测试、X射线衍射(XRD)、傅里叶变换红外衰减全反射(FTIR-ATR)、光学电子显微镜对力学性能及燃烧启停性能进行研究。结果表明,不同聚合度PVA结晶度差别不大,PVA聚合度为(2400±50)时,─OH含量相对较多力学性能更好。HB含量影响PVA的交联密度,PVA_(2499)-20%HB致密性相对较差,表面凹陷不平整。PVA_(2499)-18%HB抗拉强度为2.36 MPa,抗拉伸长率为482.92%,力学性能最好,但对铜电极具有较强的腐蚀性。以8%的HB与PVA交联形成第一网络,加入PANI或CTS与PVA形成半互穿聚合物网络,PVA_(2499)-8%HB-2%PANI推进剂抗拉强度为1.03 MPa,抗拉伸长率为432.85%。PVA_(2499)-8%HB-1%CTS推进剂抗拉强度为0.87 MPa,抗拉伸长率为302.28%。添加PANI或CTS的ECSP均可以实现启停,且最高燃烧温度均可以达到800℃。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 tensile 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.PVA_(2499)‑20%HB exhibits a relatively low density and uneven surface depressions.PVA_(2499)‑18%HB demonstrates superior mechanical properties,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 PVA_(2499)‑8%HB‑2%PANI propellant is 1.03 MPa,and its elongation at break is 432.85%.The tensile strength of the PVA_(2499)‑8%HB‑1%CTS propellant is 0.87 MPa,and its elongation 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 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] V512[航空宇航科学与技术—航空宇航推进理论与工程]