Influence of Electron Beam Irradiation on High‐Temperature Mechanical Properties of Ethylene Vinyl Acetate/Carbon Fibers Composites

Hamid, Yasin; Svoboda, Petr; Svobodová, Dagmar

doi:10.1002/vnl.21747

Cited by 8 publications

(4 citation statements)

References 37 publications

(40 reference statements)

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“…Most organic structures of IFR are stuck in a “cage” formed by the irregular accumulation of LDH and MMT nanosheets, and these organic structures can promote the carbonization process and, conversely, create the char barrier of the “cage”. [ 57–59 ]…”

Section: Resultsmentioning

confidence: 99%

In‐situ growth of layered double hydroxide on montmorillonite nanosheets to improve the flame retardant performance of ABS resin

Wang

Zhang

et al. 2023

Vinyl Additive Technology

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Layered double hydroxide (LDH) is a widely used flame retardant in polymer materials; however, the poor dispersion due to its high hydrophilic nature results in disappointing thermal stability and fire safety. In this work, LDH was in-situ grown on the disordered montmorillonite (MMT) nanosheets to obtain the hybrid of LDH and MMT nanosheets (LDH@MMT, simplified as LM). Various techniques, including X-ray diffraction, Fourier-transform infrared spectroscopy, field emission scanning electron microscopy, and transmission electron microscope were used to characterize the microstructure of LM. In addition, the acrylonitrile-butadiene-styrene (ABS) composite containing LM and intumescent flame retardant (IFR) was prepared, and its mechanical and flame-retardant properties were also measured. The characterization results demonstrate that the LM exhibits a periodically alternating layered structure. The Limiting Oxygen Index (LOI) of the ABS composite reaches 27.2% with a V-0 rating in the UL-94 vertical burning test, while its flexural strength and tensile strength decrease by only 17.82% and 13.45%, respectively. Furthermore, the heat release rate, total heat release, smoke production rate, and carbon monoxide production rate of the ABS composite present a significant decline in cone calorimeter tests compared with those of pure ABS. The results further indicate that the hybridization could effectively improve the flame-retardant performance of ABS composites and perform lesser impacts on their mechanical properties.

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Section: Resultsmentioning

confidence: 99%

In‐situ growth of layered double hydroxide on montmorillonite nanosheets to improve the flame retardant performance of ABS resin

Wang

Zhang

et al. 2023

Vinyl Additive Technology

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“…The samples were irradiated between 60 and 180 kGy and the effects of thermal and mechanical properties of filler content EVA/CF were evaluated. The shear stress and modulus were increased with increase in the filler level 12 …”

Section: Introductionmentioning

confidence: 98%

Strength Improvement of Additive Manufacturing Components by Reinforcing Carbon Fiber and by Employing Bioinspired Interlock Sutures

Selvam¹,

Mayilswamy

Whenish³

2020

Vinyl Additive Technology

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The additive manufacturing (AM) process is used to build three‐dimensional (3D)‐printed components by depositing layers of materials one over another until it completes the building process. There are numerous ways to improve its strength and rigidity of AM processed components. In this research, we discuss an effective method to improve the strength of 3D‐printed component joints by reinforcing carbon fiber (CF) with polylactic acid (PLA) and applying bioinspired interlock sutures. The strength of 3D‐printed components is highly influenced by build parameters such as printing speed, extruder temperature, and layer thickness. In this context, the design of experiment (DOE) was made to ensure the effect of build parameters. The specimens were fabricated according to DOE in order to characterize bending behavior, which was analyzed using special fixture. The bending strength and fracture behavior of specimen for three different interlock joints were studied. The analytical technique of particle swarm optimization was adopted to predict the optimum printing parameters to improve the bending strength of the 3D‐printed components. The result shows that CF‐reinforced PLA with spline interlock suture increases the bending strength of the 3D‐printed specimen when compared to pure PLA.

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“…Consequently, various surface modification methods, such as electrochemical oxidation, chemical grafting, electrodeposition, in-situ additive processes, microwave etching, plasma, sandblast, and laser treatment, have rapidly evolved in recent years. 7,8 The aim is to enhance adhesion effects by eliminating surface contaminants, 9 increasing exposed surface area, 10 activating surfaces, 6 and modification of surface structure. 11,12 Laser treatment, known for its ease of automation, environmental friendliness, and ability to achieve multiple processing modes (cleaning, [13][14][15][16] patterning 17-20 shaping 21 ), has garnered extensive attention from peers.…”

Section: Introductionmentioning

confidence: 99%

“…Bora 6 investigated the influence of different concentrations of silane reagent on the strength of Al/CFRP bonded joints, and further improved the bonding strength through the method of grinding. Consequently, various surface modification methods, such as electrochemical oxidation, chemical grafting, electrodeposition, in‐situ additive processes, microwave etching, plasma, sandblast, and laser treatment, have rapidly evolved in recent years 7,8 . The aim is to enhance adhesion effects by eliminating surface contaminants, 9 increasing exposed surface area, 10 activating surfaces, 6 and modification of surface structure 11,12 .…”

Section: Introductionmentioning

confidence: 99%

Process optimization and performance verification of CFRP laser surface modification

Li,

Wang,

Wang

et al. 2024

Polymer Composites

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Adhesive bonding has gradually replaced mechanical connections as the primary method for composite material bonding, with surface quality being the key factor determining the effectiveness of composite material adhesion. Laser surface treatment, known for its green and precise characteristics, has garnered widespread attention from both academia and industry. However, the process parameters of laser surface treatment are complex, efficiency is low, and the mechanism remains unclear. This paper, based on the response surface methodology (RSM), investigates the influence of laser secondary parameters on the resin removal rate of carbon fiber reinforced polymer/plastic (CFRP) surfaces and the impact of defocusing on surface treatment efficiency. The results indicate that when the total laser energy density (Et) is 69 J/cm2, the overlap ratio in the warp direction (OLs) is 76%, and the overlap ratio in the weft direction (OLh) is 85%, the surface tensile shear strength increases by 90.59% and 27.77% compared to the original surface and polished surface, respectively. When the defocus distance is +8 mm, the efficiency of laser surface treatment is 2.25 times that of non‐defocus, with minimal impact on mechanical performance. The surface treatment mechanism, with changes in Et, primarily involves the pure thermal decomposition of the resin matrix in an oxygen‐free environment, oxidative decomposition, and the synergistic action of the decomposition products' oxidation. Through the coupled optimization of laser process parameters, this work enhances the efficiency and effectiveness of composite material adhesive surface treatment, promoting the engineering application of laser technology.Highlights By establishing a response surface model, the study elucidated the impact patterns of laser secondary parameters (overlap rates in the warp and weft directions, total energy density) on the resin removal rate of CFRP surfaces. Based on the laser surface treatment phenomena at different total energy densities, the study analyzed and revealed the mechanism of near‐infrared (1064 nm) laser resin removal from CFRP surfaces. By increasing the spot size through defocusing, the efficiency of laser surface treatment was enhanced, and the impact on the interfacial properties of CFRP after defocused treatment was validated.

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Influence of Electron Beam Irradiation on High‐Temperature Mechanical Properties of Ethylene Vinyl Acetate/Carbon Fibers Composites

Cited by 8 publications

References 37 publications

In‐situ growth of layered double hydroxide on montmorillonite nanosheets to improve the flame retardant performance of ABS resin

In‐situ growth of layered double hydroxide on montmorillonite nanosheets to improve the flame retardant performance of ABS resin

Strength Improvement of Additive Manufacturing Components by Reinforcing Carbon Fiber and by Employing Bioinspired Interlock Sutures

Process optimization and performance verification of CFRP laser surface modification

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