Enhancing scratch damage resistance of PMMA via layer assembly with PVDF: Numerical modeling prediction and experimental verification

Xu, Yungen; Qin, Jingxian; Zhang, Xiaofei; Shen, Jiabin; Guo, Shaoyun; Sue, Hung‐Jue

doi:10.1016/j.polymer.2020.122382

Cited by 13 publications

(3 citation statements)

References 27 publications

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“…Figure 9 shows the von Mises stress contour at the normal load of 20.34 N and 22.28 N. For better visualization, the scratch tip in Figure 9 a,b is hidden. Ductile failure is one of the typical damage types in amorphous polymers [ 17 ], and the von Mises stress could serve as an indicator of such a damage mode [ 55 ]. At a normal load of 20.34 N (when interlaminar failure initiates), the peak value of the von Mises stress is situated just below the scratch tip (see Figure 9 a).…”

Section: Numerical Simulations and Discussionmentioning

confidence: 99%

Effects of Interlaminar Failure on the Scratch Damage of Automotive Coatings: Cohesive Zone Modeling

et al. 2023

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Interlaminar failure caused by scratches is a common damage mode in automotive coatings and is considered the potential trigger for irreversible destruction, i.e., plowing. This work strives to numerically investigate the mechanisms responsible for the complex scratch behavior of an automotive coating system, considering the interfacial failure. A finite element model is developed by incorporating a large deformation cohesive zone model for scratch-induced debonding simulation, where the mass scaling technique is utilized to minimize computational burden while ensuring accuracy. The delamination phenomenon of the automotive coating is reproduced, and its effects on scratch damage behavior are analyzed. Accordingly, it is revealed that the interlaminar delamination would produce significant stress redistribution, which leads to brittle and ductile damage of the coating and consequently affects the formation of plowing. Eventually, parametric studies on the effects of interfacial properties are performed. They demonstrate that the shear strength and shear fracture energy dominate scratch-induced delamination.

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Section: Numerical Simulations and Discussionmentioning

confidence: 99%

Effects of Interlaminar Failure on the Scratch Damage of Automotive Coatings: Cohesive Zone Modeling

et al. 2023

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“…The considerable increase in EB values could be indicative of the good compatibility between both polymers, reflecting the positive role of PMMA in improving EB values [53]. On the other hand, the decline in EB in highly acrylate blends (PHB/PMMA (1:3)) could be due to the rigid structure of PMMA that makes the blend more vulnerable to breakage [55]. Since the PHB/PMMA (1:2) blend possessed the highest TS and EB records, it should be selected for DCP crosslinking studies.…”

Section: Effect Of Different Polymeric Ratios On Phb/pmma Blends' Mec...mentioning

confidence: 99%

Sustainable Polyhydroxyalkanoate Production from Food Waste via Bacillus mycoides ICRI89: Enhanced 3D Printing with Poly (Methyl Methacrylate) Blend

Rofeal,

Abdelmalek,

Pietrasik

2023

Polymers

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In view of implementing green technologies for bioplastic turning polices, novel durable feedstock for Bacillus mycoides ICRI89 used for efficient polyhydroxybutyrate (PHB) generation is proposed herein. First, two food waste (FW) pretreatment methods were compared, where the ultrasonication approach for 7 min was effective in easing the following enzymatic action. After treatment with a mixture of cellulase/amylases, an impressive 25.3 ± 0.22 g/L of glucose was liberated per 50 g of FW. Furthermore, a notable 2.11 ± 0.06 g/L PHB and 3.56 ± 0.11 g/L cell dry eight (CDW) over 120 h were generated, representing a productivity percentage of 59.3 wt% using 25% FW hydrolysate. The blend of polyhydroxybutyrate/poly (methyl methacrylate) (PHB/PMMA = 1:2) possessed the most satisfactory mechanical properties. For the first time, PHB was chemically crosslinked with PMMA using dicumyl peroxide (DCP), where a concentration of 0.3 wt% had a considerable effect on increasing the mechanical stability of the blend. FTIR analysis confirmed the molecular interaction between PHB and PMMA showing a modest expansion of the C=O stretching vibration at 1725 cm−1. The DCP-PHB/PMMA blend had significant thermal stability and biodegradation profiles comparable to those of the main constituent polymers. More importantly, a 3-Dimetional (3D) filament was successfully extruded with a diameter of 1.75 mm, where no blockages or air bubbles were noticed via SEM. A new PHB/PMMA “key of life” 3D model has been printed with a filling percentage of 60% and a short printing time of 19.2 min. To conclude, high-performance polymeric 3D models have been fabricated to meet the pressing demands for future applications of sustainable polymers.

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“…The results show that both irreversible center deformation and treeing mechanism were simultaneously occur on the intermediate layer. Some researchers focus on improving the mechanical properties of PVDF, for example, Xu et al [17,18] have studied the Scratch damage behaviors of PVDF/polymethyl methacrylate (PMMA) multilayered composites. The results show that, the critical normal load of scratch damage (32-layer) was 40% higher than PVDF and close to PMMA, which indicated that the scratch resistance of PVDF could be improved by integrating with PMMA.…”

Section: Introductionmentioning

confidence: 99%

Analysis of fracture damage mechanical properties of particle reinforced polymer composite film based on micro-macro finite element method

Kong,

Xu,

Yang

et al. 2024

Modelling Simul. Mater. Sci. Eng.

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The particle reinforcement and related effect on fracture damage mechanical properties of polymers have been studied in this paper. Based on the uniaxial tensile test result of particle reinforced PVDF composites, the parameters of macro elastic-plastic finite element model and the micro particle reinforced model are obtained. The effects of boundary conditions, shape and size of damage notch on fracture damage mechanical properties of PVDF composites are studied from macroscopic view. The uniaxial tensile mechanical properties and elastic modulus are increased with notch angle. The damage analysis of the micro model shows that the reinforcement of composite is best when the content of SiO2 is 6%. Debonding between particles and matrix indicates have great effect on crack propagation. The micro-macro finite element model is effective tool to study the damage mechanical properties of particle reinforced polymers.

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Enhancing scratch damage resistance of PMMA via layer assembly with PVDF: Numerical modeling prediction and experimental verification

Cited by 13 publications

References 27 publications

Effects of Interlaminar Failure on the Scratch Damage of Automotive Coatings: Cohesive Zone Modeling

Effects of Interlaminar Failure on the Scratch Damage of Automotive Coatings: Cohesive Zone Modeling

Sustainable Polyhydroxyalkanoate Production from Food Waste via Bacillus mycoides ICRI89: Enhanced 3D Printing with Poly (Methyl Methacrylate) Blend

Analysis of fracture damage mechanical properties of particle reinforced polymer composite film based on micro-macro finite element method

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