Research on the Ignition Height and Reaction Flame Temperature of PTFE/Al/Si/CuO with Different Mass Ratios of PTFE/Si

Zou, Xuan; Ran, Xianwen; Wu, Yiting; Liu, Ping; Tang, Wenhui; Chen, Pengwan; Wang, Haifu

doi:10.3390/ma14133464

Cited by 4 publications

(3 citation statements)

References 15 publications

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“…Cold pressing, where various molding pressures, molding rates, and molding periods affect the properties of the composite result, is the most crucial step in the preparation process. 27 Sun et al 28 investigated effect into how different holding times affected the properties of composites. The outcomes demonstrated that extending the holding period assisted in minimizing warpage of the composite sheets.…”

Section: Introductionmentioning

confidence: 99%

Effect of different molding pressures on the properties of glass fiber / molybdenum disulfide / Polytetrafluoroethylene composites

Yang

2023

High Performance Polymers

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Both glass fiber (GF) and molybdenum disulfide (MoS2) can enhance the comprehensive properties of PTFE (polytetrafluoroethylene)-based composites, however the properties of the composites are significantly influenced by the molding pressure utilized. In this study, GF/MoS2/PTFE composites were produced under varied molding pressures (50–70 MPa), and the composites’ mechanical and tribological properties were evaluated. The results showed that the tribological parameters (such as friction coefficient and volumetric wear rate) and mechanical parameters (such as density, hardness, tensile strength, and elongation at break) varied depending on the molding pressure. When the molding pressure was 50 MPa, the GF/MoS2/PTFE composites displayed their finest mechanical properties. The composite had the best wear resistance with the lowest wear rate of only of 2.135 × 10−6 mm3/Nm at a molding pressure of 60 MPa and the lowest friction coefficient of 0.166 at a molding pressure of 70 MPa. The increased molding pressure that was employed to make the samples, as predicted by SEM analysis, would lead to greater residual stresses inside the specimens, which would ultimately result in cracking and peeling. In the friction test, specimens with a lower forming pressure are more likely to have surface furrows that are deeper and wider, as well as to shed their filler. Due to the increased molding pressure, the depth of furrows and filler shedding on the composite surface are also more apparent.

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Section: Introductionmentioning

confidence: 99%

Effect of different molding pressures on the properties of glass fiber / molybdenum disulfide / Polytetrafluoroethylene composites

Yang

2023

High Performance Polymers

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“…In previous studies, the drop weight test was generally employed to examine the energy release characteristics, especially the impact-induced initiation characteristics of Al/ fluoropolymer RMs [17][18][19]. In the test, the impact energy can be obtained through the drop hammer height; however, the reaction proportion is usually low because the drop hammer has a quenching effect.…”

Section: Introductionmentioning

confidence: 99%

Effects of Glycerol Tribenzoate on the Mechanical Properties and Reaction Characteristics of Al/THV Reactive Materials Prepared by Extrusion‐Injection Molding

Wang

Zhao

et al. 2022

Propellants Explo Pyrotec

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The metal/fluoropolymer reactive material, Al/ THV composites, can be prepared effectively into different shapes by extrusion injection molding. In this study, glycerol tribenzoate (GTB) plasticizer was introduced into Al/THV (35/65 wt %) prepared by extrusion and injection molding. The addition of GTB significantly affected certain properties of the matrix (THV), which consequently affected the mechanical properties and impact energy-release characteristics of the reactive material. Research shows that the addition of GTB can improve the plasticity of Al/THV(/GTB) composites under quasi-static compression and strain rate sensitivity under 2000-6000 s À 1 dynamic compression. Be-sides, the addition of GTB caused the Al/THV/GTB composites to ignite later than the Al/THV composite. The impact ignition threshold of Al/THV(/GTB) composites increased from 5100 to 5550 s À 1 with an increased GTB content. The impact ignition delay and increased impact ignition threshold of Al/THV/GTB were demonstrated through the temperature rise theory at the tip of crack propagation. In addition, under dynamic compression, more "hot spots"(origins of the reaction) in the Al/THV/GTB composites than in Al/ THV composite caused by a rapid crack propagation increased the reaction percentage and improved the combustion duration of impact-triggered reactions.

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“…Ding [ 22 ] studied the impact energy release characteristics of PTFE/Al/CuO reactive materials with a self-designed energy release testing device, and the effects of particle size, the ratio of PTFE/Al and Al/CuO materials and sintering on the energy release ability of the reactive materials were investigated. Zou [ 23 ] studied the ignition height and reaction flame temperature of PTFE/Al/Si/CuO reactive materials with different mass ratios of PTFE/Si by a drop hammer impact test. Ran [ 24 ] quantitatively and qualitatively analyzed the energy release ability of six kinds of reactive materials formulations (PTFE/Al, PTFE/B, PTFE/Si, PTFE/Al/B, PTFE/Al/Si, and PTFE/Al/CuO) by using the drop weight system and a self-designed energy release testing device, and the results showed that the PTFE/Al/Si formulation had the best energy release ability.…”

Section: Introductionmentioning

confidence: 99%

Research on the Constitutive Model of PTFE/Al/Si Reactive Material

Lee

Cui²,

Tang

et al. 2022

Polymers

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As a new type of energetic material, reactive materials are widely used at present; in particular, the metal/polymer mixtures type reactive materials show great advantages in engineering applications. This type of reactive material has good mechanical properties, and its overall performance is insensitive and high-energy under external impact loading. After a large number of previous studies, our team found that the energy release characteristics of PTFE/Al/Si reactive material are prominent. In order to master the mechanical properties of PTFE/Al/Si reactive materials, the quasi-static mechanical properties and dynamic mechanical properties were obtained by carrying out a quasi-static compression test and a dynamic SHPB test in this paper. Based on the experimental data, a Johnson-Cook constitutive model of PTFE/Al/Si reactive material considering strain hardening effect, strain rate hardening effect and thermal softening effect was constructed. The relevant research results will be used to guide future research on the reaction mechanism of PTFE/Al/Si reactive materials, in order to promote the engineering application of PTFE/Al/Si reactive materials.

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Research on the Ignition Height and Reaction Flame Temperature of PTFE/Al/Si/CuO with Different Mass Ratios of PTFE/Si

Cited by 4 publications

References 15 publications

Effect of different molding pressures on the properties of glass fiber / molybdenum disulfide / Polytetrafluoroethylene composites

Effect of different molding pressures on the properties of glass fiber / molybdenum disulfide / Polytetrafluoroethylene composites

Effects of Glycerol Tribenzoate on the Mechanical Properties and Reaction Characteristics of Al/THV Reactive Materials Prepared by Extrusion‐Injection Molding

Research on the Constitutive Model of PTFE/Al/Si Reactive Material

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