Spark Sensitivity Research Articles

Reactivity of polyaniline composites with attractive cyclic nitramines

Composite microcrystals of the nitramines (NAs) RDX, HMX, BCHMX and CL-20 with electrically conductive polyaniline (PANi) are a charge transfer complexes in composite crystals (CACs). The activation energies of thermolysis, Ea, of the pure NAs and their PANi-composites were determined using the Kissinger method, and decomposition processes are discussed. Except for the RDX/PANi CAC, all the other CACs show higher Ea values for decomposition compared to their pure NA counterparts. For all CACs, relationships are specified between the Ea values, on the one hand, and the squares of the detonation velocities, enthalpies of formation, spark energy and impact sensitivities, on the other. The relationships between their low-temperature heats of decomposition, ΔH, from DSC, and their enthalpy of formation, logarithm of impact sensitivity, electric spark energy, as well as detonation energy, are described. The PANi favorably influences the density of the corresponding CAC; surprisingly close linear correlations were found, and explained, between these densities and the Ea values. This presence of PANi strongly increased the electrical spark sensitivity of the CACs in comparison to the base NAs. Based on the results obtained, it can be noted in particular the exceptional desensitization of HMX to impact and the increased sensitivity to electrical spark by coating its crystals with polyaniline.

Preparation of spherical HMX@PDA-based PBX by co-axial droplet microfluidic technology: Enhancing the interfacial effect and safety performance of composite microspheres

Surface engineering plays a crucial role in improving the performance of high energy materials, and polydopamine (PDA) is widely used in the field of energetic materials for surface modification and functionalization. In order to obtain high-quality HMX@PDA-based PBX explosives with high sphericity and a narrow particle size distribution, composite microspheres were prepared using co-axial droplet microfluidic technology. The formation mechanism, thermal behavior, mechanical sensitivity, electrostatic spark sensitivity, compressive strength, and combustion performance of the microspheres were investigated. The results show that PDA can effectively enhance the interfacial interaction between the explosive particles and the binder under the synergistic effect of chemical bonds and the physical "mechanical interlocking" structure. Interface reinforcement causes the thermal decomposition temperature of the sample microspheres to move to a higher temperature, with the sensitivity to impact, friction, and electrostatic sparks (for S-1) increasing by 12.5%, 31.3%, and 81.5% respectively, and the compressive strength also increased by 30.7%, effectively enhancing the safety performance of the microspheres. Therefore, this study provides an effective and universal strategy for preparing high-quality functional explosives, and also provides some reference for the safe use of energetic materials in practical applications.

Hazard evaluation of ignition sensitivity and explosion severity for aluminum and aluminum powder-petroleum ether mixtures

The safety implications of aluminum powder and petroleum ether have garnered significant attention as two typical materials in the production process of energetic materials. To investigate the effect of the common solvent petroleum ether on the ignition and explosion characteristics of aluminum powder, ignition energy, flame propagation characteristics, and explosion pressure of three aluminum powder sizes and their mixtures with petroleum ether through a Hartmann tube test device and a 20 L spherical explosion vessel test system. Findings show that the ignition energy of aluminum powder initially decreases and then increases with the increase of petroleum ether content. At the petroleum ether concentration of 5.5 % and 11 %, the minimum ignition energies of the mixed systems of Al-Flake, Al-T4, and Al-T2 are 1–20 mJ, 5–30 mJ, 450–485 mJ, and 1–20 mJ, 5–25 mJ, 440–480 mJ, respectively. Lower than the minimum ignition energy of the original sample (1–30 mJ, 10–40 mJ, 470–510 mJ), indicating that the aluminum powder dust containing low concentration solvent (5.5%, 11 %) is more sensitive to an electric spark. The ignition energy of the mixed system is rather increased when the content of petroleum ether is further increased to 16.5 %. On the contrary, the probability of ignition and the electric spark sensitivity are decreased. With the addition of petroleum ether to Al-Flake and Al-T4, the flame propagation speed slightly decreases and the phase duration lengthens. The flame propagation characteristics and combustion state of Al-T2 with large particles remained largely unchanged after the addition of petroleum ether. During the 20 L spherical explosion vessel test, the maximum explosion pressure and explosion index of the mixed samples initially increase and then decrease with the increase in petroleum ether concentration. A small quantity of petroleum ether intensifies the reaction intensity of aluminum dust. At an aluminum powder dust concentration of 250 g m-3, the explosion pressure and explosion index of Al-Flake and Al-T4 peak at a petroleum ether content of 5.5 %, while Al-T2 reaches its peak at 11 %.

Prediction of impact sensitivity and electrostatic spark sensitivity for energetic compounds by machine learning and density functional theory

Prediction of impact sensitivity and electrostatic spark sensitivity for energetic compounds by machine learning and density functional theory

Design of conductive polymer coating layer for effective desensitization of energetic materials

Safety performance under external stimuli plays a crucial role for energetic materials. Therefore, desensitization of high explosive arouses widespread research interests in the field of energetic materials. Nevertheless, synergistically reducing impact and electrostatic spark sensitivities of 1,3,5,7-tetranittro-1,3,5,7-tetrazocane (HMX) remains challenging. Herein, a novel strategy concerning conductive polymer coating was proposed to solve this issue. Theoretically, the polypyrrole (PPy) can form a complete shell and strong interaction with HMX crystals. The HMX@PPy composite has been successfully achieved by in-situ polymerization, exhibiting superior sensitivities (impact: from 7 J to 27.5 J and electrostatic spark: from 0.4 J to 1.68 J) among reported HMX-based energetic materials. In addition, the thermal phase stability of HMX can also be visibly improved with sluggish phase-transition kinetics by introducing PPy coating. The current study provides a design concept for high energy explosives with low sensitivity and improved comprehensive performances.

Performance characteristics of nitramine‐based gun propellants with TEGDN as energetic plasticizer

AbstractThis study mainly explored the performance characteristics of nitramine‐based (NB) gun propellants using TEGDN as an energetic plasticizer by experimental method. Three series of NB gun propellant samples with RDX, HMX or CL‐20 were prepared referring to the formulation of JA2 gun propellant. Their thermochemical characteristics, explosion heat, chemical stability and compatibility, impact, friction and electrostatic spark sensitivities, and compressive strength were determined by various instruments. The experimental results indicated that the NB gun propellant samples with RDX have lower decomposition temperature, and those with CL‐20 have higher thermogravimetric loss. Three series of NB gun propellant samples have good chemical stability and compatibility, and their explosion heat is close to that of JA2 gun propellant, but their sensitivity is lower than that of JA2 gun propellant. The maximum stress of three series of NB gun propellant samples decreases with increasing cyclic nitramine (RDX, HMX or CL‐20) content, and their compressive strength is better than that of JA2 gun propellant.

Study on synthesis and characterization of spherical copper(I) 5‐nitrotetrazolate (DBX‐1)

AbstractTraditional primary explosives often contain heavy metals, especially toxic lead, such as lead azide (LA) and lead styphnate (LS) that can cause environmental pollution problems. Copper(I) 5‐nitrotetrazolate (DBX‐1) is a green primary explosive without toxic heavy metals, which is considered as one of the most promising alternatives to LA. DBX‐1 is usually synthesized from sodium 5‐nitrotetrazolate dihydrate (NaNT ⋅ 2H2O) and copper(I) chloride (CuCl). However, most of the synthesized products are irregular flakes with poor flowability, which affects the loadability. In this study, dextrin was used as a crystal shape modifier to improve the morphology of the synthesized product. Taguchi analysis method was used to determine the optimal experimental conditions for obtaining the spherical DBX‐1 with smaller particle size. The synthesized products were characterized by SEM, FTIR, UV‐Vis, STA TG‐DSC and VST, and their sensitivity was determined by BAM fallhammer, BAM friction tester and electrostatic spark sensitivity tester. The experiment results showed that the optimal combination of synthesis parameters was the NaNT ⋅ 2H2O concentration of 4.4 wt.%, the reaction temperature of 100 °C, the reaction time of 75 min and the additional dextrin solution of 5.0 mL. The average particle size of the synthesized spherical DBX‐1 was 33.0 μm. The decomposition activation energy was calculated by Kissinger method and Ozawa method to be 178.5 and 178.8 kJ/mol, respectively. The compound had good chemical stability. In addition, the sensitivity of spherical DBX‐1 was lower compared to that of flaky DBX‐1 and LA.

Preparation and Characterization of PANI Surface Modified HMX/F2602 Microcapsule Composites

AbstractUsing HMX with a particle size of 1–10 μm as the main explosive, a dense polyaniline (PANI) shell was prepared on the surface of HMX/F2602 by in situ polymerization, and an energetic composite material HMX−F@PANI (HMX−F2602@PANI) with a microcapsule structure was constructed. The structure and properties of the samples were characterized by SEM, XRD, XPS, DSC, mechanical sensitivity and electrostatic spark sensitivity tests. The results showed that the chemical structure and polycrystalline morphology of the crystals did not change during the coating process, and remained β‐HMX. The preparation of PANI shell greatly improves the coating degree of the explosive surface and reduces the exposure of crystal. In addition, compared with HMX/F2602, HMX−F@PANI is more excellent in improving thermal stability and reducing the electrostatic spark sensitivity, which is attributed to the advantages of microcapsule structure and good electrical conductivity of PANI.

Enhancement strategy of mechanical property by constructing of energetic RDX@CNFs composites in propellants, and investigation on its combustion and sensitivity behavior

In the domain of energetic materials (EMs), the high-energy and high-strength propellants are always what are the scientists pursuing to satisfy the great demands of fast development and replacement for artillery. Recently, the emerging of cellulose nanofibers (CNFs) has attracted great interests since its extraordinary performances like biocompatibility, carbon-neutral nature, tailorable surface chemistry, and unprecedented mechanical properties. Inspired by the fascinating high strengthen of CNFs, this study prepared a kind of energetic hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX)@CNFs composites firstly, and then applied them in conventional double-based gun propellant (GP) to study its energy, combustion and mechanical, and sensitivity performances. The results of the mechanical properties demonstrated that the impact strength of RDX@CNFs-GP with different content of CNFs was improved by 34.9-104.7%, 7.1-39.4%, 14.4-51.2% under the condition of low, room and high temperature, the compression strength was improved by 8.6-49.5%, 4.3-45.9%, 6.2-47.8%, while the tensile strength was improved by 0.6-21.2%, 7.0-19.5%, 9.0-26.0%, respectively. Moreover, the impact and electrostatic spark sensitivities have also been increased by 21.8% and 61.8% in terms of the maximum value and exert favorable desensitization effect compared with blank sample. Notably, the propellant added with CNFs could burn steadily without anomalous combustion behavior, and the energy level of the RDX@CNFs-2.0%-GP (1180.70 J/g) maintain relative close value to that of RDX@CNFs-0%-GP (1184.84 J/g) with regard to the gunpowder impetus. Lastly, the enhancement mechanism of the CNFs in GP was discussed and proposal. Hence, this present work could potentially provide fundamental theory and data support for the development of CNFs in high-strength and high energy propellants.

Conductive Oxides for Formulating Mitigated-Sensitivity Energetic Composite Materials

Composite energetic nanomaterials, otherwise known as nanothermites, consist of physical mixtures of fuel and oxidizer nanoparticles. When a combustion reaction takes place between both components, extremely impressive conditions are created, such as high temperatures (>1000 °C), intense heat releases (>kJ/cm3), and sometimes gas generation. These conditions can be adjusted by modifying the chemical nature of both reactants. However, these energetic composites are extremely sensitive to electrostatic discharge. This may lead to accidental ignitions during handling and transportation operations. This study examines the use of a n-type semiconductor ITO material as an alternative oxidizer combined with aluminum fuel. Indium tin oxide (ITO) ceramic is widely used in the elaboration of conducting coatings for antistatic applications because of its ability to conduct electrical charges (n-type semiconductor). The energetic performance of the Al/ITO thermite was determined, i.e., the sensitivity threshold regarding mechanical (impact and friction) and electrostatic discharge (ESD) stresses, as well as the reactive behavior (heat of reaction, combustion front velocity). The results demonstrate insensitivity toward mechanical stresses regardless of the ITO granulometry. As regards the spark sensitivity, using ITO microparticles considerably raises the sensitivity threshold value (<0.21 mJ vs. 13.70 mJ). A combustion velocity of nearly 650 m/s was also determined.

Preparation of 4,6-Dinitro-7-Oxygen-Benzofuraxan Sodium Salt (Nadnp) by “One-Pot” Method

4, 6-dinitro-7-oxygen-benzofuraxan sodium salt (NaDNP) was synthesized from 3-bromo-2, 4, 6-trinitroanisole and sodium azide by Substitution reaction and Cyclization reaction in water with an overall yield of 78%. Its structure was characterized by 1NMR, 13C NMR and IR, and its thermal properties were studied by Differential Scanning Calorimetry. The sensitivity performance was studied by impact sensitivity, flame sensitivity and electrostatic spark sensitivity. The results show that the DSC peak value of the sample is 282.45 °C under the protection of nitrogen when the heating rate is 10 °C / min. The impact sensitivity H50 is 38.2m, the flame sensitivity H50 is 13.6cm, and the electrostatic sensitivity E50 is 0.51J. Compare with LTNR, NaDNP is an insensitive new type of primary explosive.

Studies on Effect of Nitrogen Rich Explosives on the Morphology, Thermal and Combustion Behaviour of B/KNO3 Composition

AbstractThe study elucidates the influence of three nitrogen‐rich explosives viz., FOX‐7, FOX‐12, and RS‐RDX on the performance of B/KNO3/PEC igniter composition. The B/KNO3 pyrotechnic igniter compositions with 5, 10 & 15 parts of FOX‐7, FOX‐12, and RS‐RDX were successfully prepared. The compositions were evaluated in terms of surface morphology, heat output, sensitivities, flame temperature, pressure output, ignition delay, time to reach Pmax (BTPmax), and thermal analysis. The closed vessel firing data indicated higher Pmax value and lower BTPmax for FOX‐12 and FOX‐7 based composition. The addition of FOX‐12 and FOX‐7 also reduces the decomposition temperature of B/KNO3 composition without affecting friction and spark sensitivities. The composition having 15 parts RSRDX is the most insensitive to impact among all. Therefore, the addition of insensitive high explosives like RS‐RDX, FOX‐7and FOX‐12 is useful to improve the performance of the igniter composition to achieve low BTPmax and increased pressure output. Optimum performance is exhibited by RS‐RDX‐based compositions.

The Gait Outcomes Assessment List (GOAL) questionnaire distinguishes family and patient priorities across GMFCS levels

The preparation and isolation of 5,5′-bis(2-hydroxytetrazole) by oxidation of 5,5′-bistetrazole using commercially available oxone is described. The nitrogen-rich salts including ammonium, hydroxylammonium, guanidinium, aminoguanidinium, triaminoguanidinium, 5-aminotetrazolium and aminonitroguanidinium have been prepared, characterized (XRD, NMR and vibrational spectroscopy, DSC, mass spectrometry) and compared to their 5,5′-bis(tetrazole-1-oxide) analogues. The impact, friction and electrical spark sensitivities of all compounds were measured and several detonation parameters such as the detonation velocities and detonation pressures were also calculated with the EXPLO5 code based on calculated heats of formation (CBS-4M) and the X-ray densities.

Performance of copper(II)-azide with hydrogen bonding as initiating explosive

The development of high-performance initiating explosives through energetic complexes is considered a feasible way to satisfy military and civilian applications. Compared with other reported initiating explosives, copper(II)-azide is a more promising candidate due to its stronger initiation ability and green nature. However, its instability towards mechanical and electrostatic stimulation hinders its application. This study aimed to propose an effective strategy for stabilizing highly sensitive and explosive copper(II)-azide via hydrogen bonding with NH2-substituted ligands. Using this method, two highly energetic polymers, [Cu(MAT)(N3)2]n (CMA-1) and [Cu4(MAT)2(N3)8(H2O)]n (CMA-2), based on 1-methyl-5-aminotetrazole (MAT), were synthesized and confirmed by single-crystal x-ray diffraction. The experimental results showed that both CMA-1 and CMA-2 had improved thermal stability and reduced mechanical and electrostatic sensitivities to meet practical applications, demonstrating the feasibility of stabilizing the copper(II)-azide system through hydrogen bonds. Especially, combining a series of advantages, including nontoxic metal (Cu), high nitrogen content (62.5%), high thermal decomposition temperature (223.3 °C), good sensitivities (impact sensitivity = 1.0 J; friction sensitivity = 30 N; electrostatic spark sensitivity = 201.6 mJ), powerful ignition capability (minimum primary charge = 10 mg), and simple synthesis, CMA-2 exhibited comprehensive performance beyond those of all other initiating substances to date. In particular, the electrostatic spark sensitivity (201.6 mJ) is at least 720 times higher than that of the original CA powder (<0.28 mJ), making it a promising candidate for new-generation initiating explosive.

Spark sensitivity and light signature mitigation of an Al/SnO2 nanothermite by the controlled addition of a conductive polymer

The development of insensitive energetic composite materials is a research topic of growing interest. Nanothermites, which are described as a highly reactive mixture of metal and metal oxide, are the focus of this challenge.In this work, the conductive polymer polyaniline (PAni) was introduced into an Al/SnO2 energetic nanocomposite either via the preparation of a SnO2-PAni composite or as a powdered ternary compound. Both PAni-enriched Al/SnO2 nanothermites were characterized in terms of sensitivity (impact, friction, electrostatic discharge (ESD)) and reactive properties (combustion velocity). The two methods were compared to evaluate which one achieved the best compromise for the nanothermite in terms of performance (sensitivity/combustion properties). When the polymer is intimately structured with the oxide, it is possible to reduce the sensitivity of the energetic composition as a function of the additive amount. The polymer easily conducts the electrostatic charges through the energetic matter until the nanothermite presents no handling danger: ESD varied from 0.42 to 246.1 mJ for the safer composition (4.80 wt% of PAni). On the other hand, when PAni powder was added to the nanothermite, the ESD threshold did not vary because no continuous conductive phase was created within the material. Concerning the reactive properties of the Al/SnO2 energetic system, with the addition of PAni (2.04 wt%) as an SnO2-PAni hybrid matrix, the combustion velocity decreased from 800 to 500 m/s combined with a lower luminous signature.The use of a structured conductive polymer as a desensitizer within nanothermites, represents a significant step forward in the development of safer and reactive energetic compositions.

Study on Indium (III) Oxide/Aluminum Thermite Energetic Composites

Thermites or composite energetic materials are mixtures made of fuel and oxidizer particles at micron-scale. Thermite reactions are characterized by high adiabatic flame temperatures (&gt;1000 °C) and high heats of reaction (&gt;kJ/cm3), sometimes combined with gas generation. These properties strongly depend on the chemical nature of the couple of components implemented. The present work focuses on the use of indium (III) oxide nanoparticles as oxidizer in the elaboration of nanothermites. Mixed with an aluminum nanopowder, heat of reaction of the resulting Al/In2O3 energetic nanocomposite was calculated and its reactive performance (sensitivity thresholds regarding different stimuli (impact, friction, and electrostatic discharge) and combustion velocity examined. The Al/In2O3 nanothermite, whose heat of reaction was determined of about 11.75 kJ/cm3, was defined as insensitive and moderately sensitive to impact and friction stimuli and extreme sensitive to spark with values &gt;100 N, 324 N, and 0.31 mJ, respectively. The spark sensitivity was decreased by increasing In2O3 oxidizer (27.71 mJ). The combustion speed in confined geometries experiments was established near 500 m/s. The nature of the oxidizer implemented herein within a thermite formulation is reported for the first time.

Optimization of Synthesis Parameters and Characterization of Green Primary Explosive Copper(I) 5‐Nitrotetrazolate (DBX‐1)

AbstractSince the early 20th century, lead azide (LA) has been commonly used as a primary explosive. However, lead pollution in the air and soil has attracted more and more attention, particularly in military training grounds and shooting ranges. Copper(I) 5‐nitrotetrazolate (DBX‐1) is considered as one of the most promising alternatives to LA. DBX‐1 is typically prepared from sodium 5‐nitrotetrazolate dihydrate [NaNT(H2O)2] and copper(I) chloride (CuCl). But little is known about its optimal synthesis parameters. In addition, NaNT(H2O)2 is not commercially available. In this study, NaNT(H2O)2 was prepared by ourselves. Taguchi's experimental design method was used to determine the optimal experimental conditions for obtaining the maximum yield of DBX‐1. The synthesized NaNT(H2O)2 and DBX‐1 were identified by means of SEM, NMR, FTIR, EA, UV‐Vis and STA TG‐DSC, and the sensitivity of DBX‐1 was determined using BAM fallhammer, BAM friction tester and electrostatic spark sensitivity tester. The experimental results indicated that the optimal synthesis parameters of DBX‐1 were as follows: the reaction temperature was 100 °C, the reaction time was 30 min, the concentration of NaNT(H2O)2 was 0.075 wt.% and the molar ratio of NaNT(H2O)2 to CuCl was 1.15, and then the maximum yield after purification could reach 72.2 %. The decomposition activation energies of DBX‐1 calculated by Kissinger and Ozawa methods were 178.6 and 179.0 kJ/mol, respectively. In addition, the impact sensitivity, friction sensitivity and electrostatic spark sensitivity of DBX‐1 were 51 mJ, 0.4 N and 7.3 mJ, respectively, which were almost the same as those for LA.

Study on Synthesis and Characterization of Primary Explosive KDNBF with Different Morphologies

AbstractTraditional primary explosives are usually heavy metal salts, especially salts of lead, such as lead azide (LA) and lead styphnate (LS), which can cause environmental pollution problems. The potassium salt of 4,6‐dinitrobenzofuroxan (KDNBF) has attracted more and more attention due to its advantages of no heavy metal pollution to the environment and appropriate sensitivity. There are many reports on the thermal properties and applications of KDNBF, but few reports on the morphological properties. In addition, little is known about the optimal synthesis conditions of KDNBF with different morphologies in the preparation process. In this study, Taguchi's experimental design method was used to determine the optimal experimental conditions for obtaining the maximum yields of KDNBF with different morphologies. The synthesized KDNBF was identified by means of SEM, NMR, FTIR, EA, and TG‐DSC, and its sensitivity was measured using BAM fallhammer, BAM friction tester, and electrostatic spark sensitivity tester. The experimental results indicated that the maximum yields of flaky and spherical KDNBFs could reach 85.6 % and 82.6 % after purification under the optimal experimental condition, respectively. The spherical KDNBF powder had a relatively denser structure than the flaky KDNBF powder. The thermal analyses showed that the activation energies of the decomposition reaction of the flaky and spherical KDNBF powders calculated by the Kissinger method were 171.5 and 188.5 kJ mol−1, respectively, and the Ozawa method were 170.7 and 186.9 kJ mol−1, respectively. The thermal stability of spherical KDNBF powder was higher than that of flaky KDNBF powder. In addition, the sensitivity tests showed that the spherical KDNBF powder was less sensitive than the flaky KDNBF powder.

Optimization of the Process Parameters for the Synthesis of High Purity 4,6‐Dinitrobenzofuroxan (4,6‐DNBF)

Abstract4,6‐Dinitrobenzofuroxan (4,6‐DNBF) is explosive and can also be used as an important intermediate in the synthesis of other explosives. It can be prepared by nitrating benzofuroxan (BF) with mixed nitric/sulfuric acid. However, little is known about its optimal synthesis parameters in the preparation process. In this study, Taguchi's experimental design method was used to improve the yield of 4,6‐DNBF. A L9 (34) orthogonal array with four control factors and three levels of each control factor was used to design nine experimental conditions. The experimental data were transformed into a signal‐to‐noise (S/N) ratio to analyze and evaluate the experimental conditions of the optimal parameter combination for the maximum yield of 4,6‐DNBF. The verification results indicated that the optimal synthesis parameters were as follows: nitration temperature was 40 °C, mass ratio of BF to H2SO4, was 1 : 15, volume ratio of HNO3 to H2SO4 was 1 : 2.0 and reaction time was 4 hours, and then the maximum crude yield and the maximum yield after purification could reach 73.2 % and 49.0 %, respectively. Furthermore, the synthesized 4,6‐DNBF was identified by scanning electron microscopy (SEM), nuclear magnetic resonance spectrometer (NMR), Fourier transform infrared spectrometer (FTIR), elemental analyzer (EA), ultraviolet‐visible spectrometer (UV‐Vis) and thermogravimetry‐differential scanning calorimetry (TG‐DSC), and its sensitivity was determined using BAM fallhammer, BAM friction tester, and electrostatic spark sensitivity tester.

Modeling Sensitivities of Energetic Materials using the Python Language and Libraries

AbstractAssessing the value of new compounds as components of energetic materials requires the determination of a significant amount of data, including sensitivities to various stimuli. Unfortunately, the dependence of these properties on molecular structure is still poorly understood. In view of estimating their values for putative high energy molecules, standard quantitative structure‐property relationship (QSPR) methodologies are widely used. In doing so, a special focus is put on standard descriptors and formalisms. To foster further progress through consideration of alternative approaches, this article emphasizes how the Python language and associated libraries make it straightforward to implement arbitrary models, including schemes à la Keshavarz based on the occurrences of highly specific molecular fragments as well as the non‐linear expressions naturally arising from physics‐based approaches to sensitivities. Two previously published models are implemented for illustrative purposes. The first one is a simple fragment‐based equation for electric spark sensitivity of nitroarenes. The second one is a model for impact sensitivity of general molecular energetic materials. In each case a Python implementation is provided as supporting information and may be used as is or serve as a template to implement alternative schemes.