A5037584380- Rocket and propulsion systems research
- Energetic Materials and Combustion
- Gas Dynamics and Kinetic Theory
- Thermal and Kinetic Analysis
- Polymer Foaming and Composites
- Catalytic Processes in Materials Science
- Combustion and Detonation Processes
- Fire dynamics and safety research
- Risk and Safety Analysis
- Advanced ceramic materials synthesis
- Aerogels and thermal insulation
- High voltage insulation and dielectric phenomena
- Laser-induced spectroscopy and plasma
- Advanced materials and composites
- Advanced Nanomaterials in Catalysis
- Electrochemical sensors and biosensors
- Particle Dynamics in Fluid Flows
- Advanced biosensing and bioanalysis techniques
- Fluid Dynamics and Heat Transfer
- Silicone and Siloxane Chemistry
- Climate Change Policy and Economics
- Diamond and Carbon-based Materials Research
- Astro and Planetary Science
- Plasma and Flow Control in Aerodynamics
- Merger and Competition Analysis
Microbiology Institute of Shaanxi
2020-2022
Northwestern Polytechnical University
2017-2020
Nanjing University of Finance and Economics
2018
Yangzhou University
2017
Ethylene–propylene–diene monomer (EPDM) composites were usually enhanced with ablative additives to protect solid rocket motor (SRMs) casings. However, the poor thermal insulation caused by high conductive fillers can lead failure. Herein, novel EPDM containing alternating layers of (AM) and heat-insulated (HM) prepared through layer-multiplying extrusion. Compared conventional material, multilayer showed mechanical properties that could be further improved tuning number layers. The ablation...
Abstract A volumetric ablation model for EPDM (ethylene- propylene-diene monomer) is established in this paper. This considers the complex physicochemical process porous structure of a char layer. An physics based on layer and another heterogeneous are then built. In model, porosity used to describe Gas diffusion chemical reactions introduced entire structure. Through detailed formation analysis, causes compact or loose vapor deposition (CVD) reaction between pyrolysis gas skeleton...
Abstract Ethylene propylene diene monomer (EPDM) foams have received considerable attention owing to their low weight, thermal conductivity, and mechanical flexibility. However, poor ablative resistance stability make use in severe conditions, such as the combustion chamber of a solid rocket motor, difficult. In this study, EPDM reinforced with aramid fibers (AFs) carbon (CFs) are prepared through hot‐pressing‐induced foaming process. The effects on cellular structure, stability, mechanical,...
Abstract SiC nanowire (SiC‐NW) and nanopowder (SiC‐NP) were used to reinforce ethylene propylene diene monomer (EPDM) composites improve their ablation erosion resistance. The mechanical thermal properties of the investigated. resistance insulation performance evaluated based on oxyacetylene motor experiments. In addition, particle char layer was characterized. test experimental results show that, compared with basic formulation, formulations containing SiC‐NW SiC‐NP increased by 85.54%...
The thermochemical ablation of insulation material caused by slag deposition in solid rocket motors has increasingly attracted researchers' attention. Understanding the mechanism and ability to calculate reaction kinetics parameters determine height thermal protection design for advanced motors. In this work, interaction Al2O3-C system is determined through static experiments. Using X-ray diffraction, HSC thermodynamic software, a thermogravimetric analyser, carbon reduction alumina analysed...
This paper investigates the impacts exerted by residents? environmental preference on privatization in a mixed differentiated duopoly. We assume that production will generate pollution, which causes an extra cost private firm does not bear but residents with have to tolerate. The government pursues maximize social welfare. find has significant privatization. When pay more attention cannot induce welfare, and thus choose privatize public firm. degree of substitution products affect results...
Abstract The experimental system of pulse detonation engine (PDE) is set up to investigate the influence equivalence ratios on noise characteristics. research results show that as ratio increasing, amplitudes in all angles and locations increase, t B also increases simultaneously, while A first then decreases. has a great intensity signal frequency band 10–100 Hz, which firstly decreases with increase ratio, maximum value obtained at 1.1. are significance study mechanism promote process...
With the rapid development of solid rocket ramjet (SRR), new requirements are put for insulation materials chamber. Only by deeply understanding ablation characteristics can be effectively improved and that meet thermal protection SRR. In this paper, a combination numerical simulation experimental methods was used to reveal typical environment SRR, condition insulator surface under chamber working were given. Combined with arc tunnel equipment, set device oxygen-rich particles erosion...
Abstract The experimental system of pulse detonation engine (PDE) is set up to investigate the influence equivalence ratios on noise characteristics. research results show that as ratio increasing, amplitudes in all angles and locations increase, t B also increases simultaneously, while A first then decreases. has a great intensity signal frequency band 10–100 Hz, which firstly decreases with increase ratio, maximum value obtained at 1.1. are significance study mechanism promote process...