B12H12［N(C2H5)4］2对NEPE推进剂燃烧性能的影响

研究了硼氢化合物 B1 2 H1 2 [N(C2 H5 ) 4] 2 对 NEPE推进剂燃烧性能的影响 ,采用 DSC分析了 B1 2 H1 2 [N(C2 H5 ) 4] 2 与 NEPE推进剂主要组分硝酸酯的相容性以及对推进剂固化反应的催化作用和对高氯酸铵、硝胺常压热分解的催化作用 ,并利用恒压静态燃速仪测试了推进剂在 4～ 1 1 MPa的燃烧速度和燃速压力指数     

纳米氧化铅为燃烧催化剂的应用研究

运用红外光谱法研究纳米氧化铅对 HMX固相热分解的影响 ,通过静态靶线法燃速测试仪考察纳米氧化铅在推进剂中的实际应用效果。红外谱峰的变化表明 :氧化铅对 HMX的固相热分解直接起催化作用。通过纳米氧化铅在 NEPE推进剂中的实际应用效果表明 :纳米氧化铅可有效的降低 NEPE推进剂的燃速压力指数。     

镁铝中能贫氧推进剂燃烧性能初探

系统地研究了镁铝中能贫氧推进剂的燃烧特性,并对该类推进剂的配方进行了初步的优化设计。研究发现,高氯酸铵含量和镁铝比对贫氧推进剂燃烧特性有显著影响。增加ＡＰ含量和金属添加剂中镁粉含量均有助于提高推进剂的燃速和拓宽其低压可燃极限。另外,采用超细组分或添加燃速催化剂也是提高推进剂燃速和拓宽低压可燃极限的重要途径。     

初温为100℃时双基系推进剂的燃烧特性分析

利用俄国Ｆｌａｍｅ数据库中若干个具有１００℃（初温）燃速值的双基系推进剂配方及其它数据资料，分析了初温为１００℃时双基及改性双基推进剂的燃烧特性及组分对燃烧特性的影响。     

Influence of Physical Characteristics and Ingredients on the Minimum Burning Pressure of Ammonium Nitrate Emulsions

It has been well established that sustained combustion in ammonium nitrate water‐based emulsions (AWEs) can only occur if the ambient pressure is held above some threshold value, usually referred to as the ‘minimum burning pressure’ (MBP). For the commercial explosives industry, a good knowledge of the MBP for particular AWE formulations is essential to estimate safe operating pressures for the associated manufacturing and handling processes. In these processes, AWE products are most often pumped in closed systems and at elevated temperature. While previous studies have established that the MBP can depend critically on major ingredients, its dependence on physical characteristics such as temperature and viscosity had never been investigated. Moreover, the consequences of alterations in measurement methodologies on the resulting measured MBP values had not been studied.     

A Pressurized Vessel Test to Measure the Minimum Burning Pressure of Water‐Based Explosives

It is well known that water‐based commercial explosives locally ignited in closed vessels do not undergo self‐sustained combustion when the pressure is lower than some threshold value. The latter is usually referred to as the Minimum Burning Pressure (MBP) of the explosive and is now being used by some manufacturers as a basis of safety for many associated manufacture, transport, and handling processes. In the present work, both an apparatus based on hot‐wire ignition and an associated methodology were developed to measure the MBP of water‐based explosives. Typical results for various emulsion and water‐gel explosives are also reported and discussed. It is also shown that the technique could be used to characterize very insensitive explosive substances normally used as explosive precursors.     

Hot‐Wire Ignition of AN‐Based Emulsions

Emulsions based on ammonium nitrate (AN) and water locally ignited by a heat source do not undergo sustained combustion when the pressure is lower than some threshold value usually called the Minimum Burning Pressure (MBP). This concept is now being used by some manufacturers as a basis of safety. However, before a technique to reliably measure MBP values can be designed, one must have a better understanding of the ignition mechanism. Clearly, this is required to avoid under ignitions which could lead to the erroneous interpretation of failures to ignite as failures to propagate. In the present work, facilities to prepare and characterize emulsions were implemented at the Canadian Explosives Research Laboratory. A calibrated hot‐wire ignition system operated in a high‐pressure vessel was also built. The system was used to study the ignition characteristics of five emulsion formulations as a function of pressure and ignition source current. It was found that these mixtures exhibit complicated pre‐ignition stages and that the appearance of endotherms when the pressure is lowered below some threshold value correlates with the MBP. Thermal conductivity measurements using this hot‐wire system are also reported.     

聚乙烯压力管材的生产过程控制

聚乙烯压力管材的生产过程中,原料的选择和预处理、管材挤出设备和工艺参数的选择以及生产中实际问题的解决是三个重要方面,对平衡管材的质量和经济效益具有重要意义。本文根据我公司的实际生产情况对这些问题进行探讨。     

高能硝胺发射药的膛内基本燃烧特征

针对高能硝胺发射药在静态下燃速压力指数大的特殊燃烧性能，通过３０ｍｍ高压模拟炮试验，采用与制式单基药相对比的研究分析方法，对高能硝胺发射药在火炮膛内条件下的基本燃烧特征进行了研究分析。     

干熄焦烧损率的统计方法及烧损因素探讨

干熄焦烧损率的计算目前都采用碳平衡法,碳平衡法能确定干熄焦稳定运行时的烧损率,但进行生产统计时碳平衡法是不可取的。文中介绍了用干熄焦产汽率计算、统计干熄焦焦炭烧损的方法,该方法不需要进行碳排放量的测定,可随时进行统计计算,方便简单,精度能够满足生产统计需要,同时对干熄焦系统运行过程焦炭烧损的原因进行了分析和探讨。