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Energetic Materials Combustion Catalysis: Necessary Conditions for Implementation
Propellants, Explosives, Pyrotechnics ( IF 1.8 ) Pub Date : 2020-10-21 , DOI: 10.1002/prep.202000170
Anatoly P. Denisyuk 1 , Zar Ni Aung 1 , Yury G. Shepelev 1
Affiliation  

The features of the catalysis of combustion of aromatic nitro compounds (trinitrates of toluene, resorcinol, phenol, etc.) have been studied. It has been shown that catalysts have a significant effect on the combustion of aromatic nitro compounds, and, as in the case of double‐base propellants, their efficiency increases with the addition of carbon materials, especially carbon nanotubes (CNTs). For example, the addition of 3% nickel salicylate in combination with 1% CNTs to trinitroresorcinol leads to an increase in its burning rate by 4.3 times. It has been shown that, as in the case of double‐base propellants, a necessary condition for the catalysis of nitro compounds is the formation of a carbon frame (deposit char layer) on the burning surface, on which catalyst particles accumulate and accelerate exothermic reactions. This fact, combined with the high thermal conductivity of the carbon frame, leads to an increase in the heat flux into the condensed phase and an increase in the burning rate. As pressure increases, the formation of the frame becomes more difficult, and the effect of catalysts decreases, as a result of which the value of pressure exponent reduces. The proposed mechanism of combustion catalysis is applicable to almost any individual explosives and propellant compositions based on various plasticizers (nitroesters, linear liquid nitro compounds and nitramines, etc.), as well as containing powerful explosives (RDX, HMX, CL‐20, etc.), the combustion of which proceeds due to the heat of redox reactions.

中文翻译:

含能材料燃烧催化:实施的必要条件

研究了芳香族硝基化合物(甲苯,间苯二酚,苯酚等的三硝酸盐)燃烧催化的特征。研究表明,催化剂对芳族硝基化合物的燃烧有显着影响,并且,与双基推进剂一样,催化剂的效率会随着碳材料(尤其是碳纳米管(CNT))的添加而提高。例如,向三硝基间苯二酚中添加3%的水杨酸镍与1%的CNT结合,可将其燃烧速率提高4.3倍。研究表明,与双基推进剂一样,催化硝基化合物的必要条件是在燃烧表面形成碳骨架(沉积炭层),催化剂颗粒在碳骨架上积累并加速放热。反应。这个事实,结合碳框架的高导热性,导致进入凝结相的热通量增加,燃烧速率增加。随着压力增加,框架的形成变得更加困难,并且催化剂的作用降低,其结果是压力指数的值降低。所提出的燃烧催化机理几乎适用于基于各种增塑剂(硝酸酯,线性液态硝基化合物和硝胺等)以及包含强力炸药(RDX,HMX,CL-20等)的几乎所有炸药和推进剂组合物。 ),其燃烧由于氧化还原反应的热量而继续进行。随着压力增加,框架的形成变得更加困难,并且催化剂的作用降低,其结果是压力指数的值降低。所提出的燃烧催化机理几乎适用于基于各种增塑剂(硝酸酯,线性液态硝基化合物和硝胺等)以及包含强力炸药(RDX,HMX,CL-20等)的几乎所有炸药和推进剂组合物。 ),其燃烧由于氧化还原反应的热量而继续进行。随着压力增加,框架的形成变得更加困难,并且催化剂的作用降低,其结果是压力指数的值降低。所提出的燃烧催化机理几乎适用于基于各种增塑剂(硝酸酯,线性液态硝基化合物和硝胺等)以及包含强力炸药(RDX,HMX,CL-20等)的几乎所有炸药和推进剂组合物。 ),其燃烧由于氧化还原反应的热量而继续进行。
更新日期:2020-10-21
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