As an energetic material of great interest,the work capacity of dihydroxylammonium 5,5’-bistetrazole-1,1’-diolate(TKX-50)has been questioned recently.Although some research groups have explored the reasons for the l...As an energetic material of great interest,the work capacity of dihydroxylammonium 5,5’-bistetrazole-1,1’-diolate(TKX-50)has been questioned recently.Although some research groups have explored the reasons for the low working ability of TKX-50,the plane impact experiment on powdered TKX-50 is obviously closer to the practical application,and the conclusions based on this are more guiding.Hence,we performed shock Hugoniot measurements of powdered TKX-50 between 5.65 and 16.29 GPa.The plane impact experiments of powdered TKX-50 were carried out and the shocked Raman spectra were collected.By Raman spectroscopy analysis,a new peak of powdered TKX-50 was found between19.47 GPa and 24.96 GPa,which may be caused by decomposition/phase transition and was related with the low work capacity.展开更多
为降低六硝基六氮杂异伍兹烷(CL-20)的感度,通过溶剂-非溶剂法制备了CL-20和1,1′-二羟基-5,5′-联四唑二羟胺盐(TKX-50)共晶炸药;通过Materials Studio 5.0软件分析了CL-20和TKX-50分子的表面静电势,并预测了共晶分子间可能的非共价键...为降低六硝基六氮杂异伍兹烷(CL-20)的感度,通过溶剂-非溶剂法制备了CL-20和1,1′-二羟基-5,5′-联四唑二羟胺盐(TKX-50)共晶炸药;通过Materials Studio 5.0软件分析了CL-20和TKX-50分子的表面静电势,并预测了共晶分子间可能的非共价键作用;采用扫描电镜(SEM)、X射线衍射(XRD)、红外(IR)和拉曼光谱(Raman)对其形貌和结构进行了表征;采用DSC测试了其热性能,并测试了其撞击感度,预测了其爆轰性能。结果表明,制备的CL-20/TKX-50共晶呈扁平的片状形貌;XRD、IR和Raman谱图中出现峰的生成、消失、偏移和强度的改变,证明有新的晶格结构形成;升温速率8℃/min下,CL-20/TKX-50共晶的主要热分解峰温为222.8℃,与CL-20、TKX-50的热分解峰温240.3、234.9℃相比,分别提前了17.5℃和12.1℃,明显区别于具有两个放热过程的CL-20/TKX-50混合物的热分解行为;CL-20/TKX-50共晶炸药的感度显著低于原料CL-20,同时也优于β-HMX,说明其具有良好的安全性能;CL-20/TKX-50共晶的预测爆速和爆压分别为9264m/s和43.8GPa,较CL-20均略微下降,但和β-HMX相比,爆轰性能明显提高。表面静电势能和建模分析均表明,CL-20中—NO2的O与TKX-50中—NH+3的H之间易于形成氢键。展开更多
对比HTPB/RDX/AP/Al推进剂研究了TKX-50对HTPB推进剂的能量性能的影响,BSFФ165 mm发动机试车结果表明,含TKX-50配方的比冲及比冲效率均低于含RDX的配方,与早期文献报道结果不一致。对该结果进行了试验分析,TKX-50标准生成焓实测结果为2...对比HTPB/RDX/AP/Al推进剂研究了TKX-50对HTPB推进剂的能量性能的影响,BSFФ165 mm发动机试车结果表明,含TKX-50配方的比冲及比冲效率均低于含RDX的配方,与早期文献报道结果不一致。对该结果进行了试验分析,TKX-50标准生成焓实测结果为210 k J/mol,与最初文献报道结果(446.6 k J/mol)不一致;依据实测的生成焓结果,对配方的能量性能进行了复算,复算结果与试验结果比较吻合,表明TKX-50标准生成焓偏低是其能量性能不佳的主要原因。展开更多
基金supported by the National Natural Science Foundation of China(Grant No.12072299)the Fundamental Research Funds for the Central Universities(Grant No.2682020ZT102)。
文摘As an energetic material of great interest,the work capacity of dihydroxylammonium 5,5’-bistetrazole-1,1’-diolate(TKX-50)has been questioned recently.Although some research groups have explored the reasons for the low working ability of TKX-50,the plane impact experiment on powdered TKX-50 is obviously closer to the practical application,and the conclusions based on this are more guiding.Hence,we performed shock Hugoniot measurements of powdered TKX-50 between 5.65 and 16.29 GPa.The plane impact experiments of powdered TKX-50 were carried out and the shocked Raman spectra were collected.By Raman spectroscopy analysis,a new peak of powdered TKX-50 was found between19.47 GPa and 24.96 GPa,which may be caused by decomposition/phase transition and was related with the low work capacity.
文摘为降低六硝基六氮杂异伍兹烷(CL-20)的感度,通过溶剂-非溶剂法制备了CL-20和1,1′-二羟基-5,5′-联四唑二羟胺盐(TKX-50)共晶炸药;通过Materials Studio 5.0软件分析了CL-20和TKX-50分子的表面静电势,并预测了共晶分子间可能的非共价键作用;采用扫描电镜(SEM)、X射线衍射(XRD)、红外(IR)和拉曼光谱(Raman)对其形貌和结构进行了表征;采用DSC测试了其热性能,并测试了其撞击感度,预测了其爆轰性能。结果表明,制备的CL-20/TKX-50共晶呈扁平的片状形貌;XRD、IR和Raman谱图中出现峰的生成、消失、偏移和强度的改变,证明有新的晶格结构形成;升温速率8℃/min下,CL-20/TKX-50共晶的主要热分解峰温为222.8℃,与CL-20、TKX-50的热分解峰温240.3、234.9℃相比,分别提前了17.5℃和12.1℃,明显区别于具有两个放热过程的CL-20/TKX-50混合物的热分解行为;CL-20/TKX-50共晶炸药的感度显著低于原料CL-20,同时也优于β-HMX,说明其具有良好的安全性能;CL-20/TKX-50共晶的预测爆速和爆压分别为9264m/s和43.8GPa,较CL-20均略微下降,但和β-HMX相比,爆轰性能明显提高。表面静电势能和建模分析均表明,CL-20中—NO2的O与TKX-50中—NH+3的H之间易于形成氢键。
文摘对比HTPB/RDX/AP/Al推进剂研究了TKX-50对HTPB推进剂的能量性能的影响,BSFФ165 mm发动机试车结果表明,含TKX-50配方的比冲及比冲效率均低于含RDX的配方,与早期文献报道结果不一致。对该结果进行了试验分析,TKX-50标准生成焓实测结果为210 k J/mol,与最初文献报道结果(446.6 k J/mol)不一致;依据实测的生成焓结果,对配方的能量性能进行了复算,复算结果与试验结果比较吻合,表明TKX-50标准生成焓偏低是其能量性能不佳的主要原因。
