Design, preparation and mechanical properties of novel glass fiber reinforced polypropylene bending bars

Xian, Guijun; Zhou, Ping; Bai, Yanbo; Wang, Junqi; Li, Chenggao; Dong, Shaoce; Guo, Rui; Li, Jinhao; Du, Haoqiang; Zhong, Jian

doi:10.1016/j.conbuildmat.2024.136455

Cited by 33 publications

(4 citation statements)

References 40 publications

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“…For the simulations presented in this work, a Digimat MF (Mean Field) homogenization tool and an FE (Finite Element) homogenization tool were used (see Figure 8). Digimat MF [26] is the mean-field homogenization tool used to quickly compute the macroscopic performance of composite materials from their per-phase properties and microstructure definition. Digimat MF aims at the realistic prediction of the nonlinear constitutive properties of multi-phase materials, taking into account temperature and strain rate dependencies.…”

Section: Software Used For Modeling Of Composite Materialsmentioning

confidence: 99%

“…Digimat-FE [ 26 ] generates realistic representative volume elements (RVEs) for a large variety of material microstructures and can also rely on external geometric microstructure descriptions such as micro-CT-scan or molecular dynamic results.…”

Section: Fem Analysismentioning

confidence: 99%

“…The results of the FE analysis are post-processed in the sense of probabilistic distribution functions that give detailed insight into the RVEs. Mean homogenized values are computed and can be used in subsequent FE analysis on the structural part level [ 26 ].…”

Section: Fem Analysismentioning

confidence: 99%

“…The detailed preparation of the composite material is described in main text of the article. The input data used for modeling in Digimat software were from the manufacturer’s datasheets, but the verification was performed in line with the method of Xian et al for glass fiber [ 26 ]. It is also possible to verify the mechanical properties of epoxy resin, as reported by Wu Jingyu et al [ 27 ].…”

Section: Introductionmentioning

confidence: 99%

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Comparison of Mechanical Property Simulations with Results of Limited Flexural Tests of Different Multi-Layer Carbon Fiber-Reinforced Polymer Composites

Bastovansky,

Smetanka,

Kohar

et al. 2024

Polymers

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This article is focused on the experimental study of flexural properties in different multi-layer carbon fiber-reinforced polymer (CFRP) composites and correlations with the results of finite element method (FEM) simulations of mechanical properties. The comparison of the results shows the possibility of reducing the number of experimental specimens for testing. The experimental study of flexural properties for four types of carbon fiber-reinforced polymer matrix composites with twill weaves (2 × 2) was carried out. As input materials, pre-impregnated carbon laminate GG 204 T and GG 630 T (prepreg) and two types of carbon fiber fabrics (GG 285 T and GG 300 T (fabric)) were used. Multi-layer samples were manufactured from two types of prepregs and two types of fabrics, which were hand-impregnated during sample preparation. The layers were stacked using same orientation. All specimens for flexural test were cut with the longer side in the weft direction. Pre-impregnated carbon laminates were further impregnated with resin DT 121H. Carbon fabrics were hand-impregnated with epoxy matrix LG 120 and hardener HG 700. To fulfill the aim of this research, finite element method (FEM)-based simulations of mechanical properties were performed. The FEM simulations and analysis were conducted in Hexagon’s MSC Marc Mentat 2022.3 and Digimat 2022.4 software. This paper presents the results of actual experimental bending tests and the results of simulations of bending tests for different composite materials (mentioned previously). We created material models for simulations based on two methods—MF (Mean Field) and FE (Finite Element), and the comparative results show better agreement with the MF model. The composites (GG 285 T and GG 300 T) showed better flexural results than composites made from pre-impregnated carbon laminates (GG 204 T and GG 630 T). The difference in results for the hand-impregnated laminates was about 15% higher than for prepregs, but this is still within an acceptable tolerance as per the reported literature. The highest percentage difference of 14.25% between the simulation and the real experiment was found for the software tool Digimat FE 2022.4 – GG 630 T composite. The lowest difference of 0.5% was found for the software tool Digimat MF 2022.4 – GG 204 T composite. By comparing the results of the software tools with the results of the experimental measurements, it was found that the Digimat MF 2022.4 tool is closer to the results of the experimental measurements than the Digimat FE 2022.4 tool.

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Section: Software Used For Modeling Of Composite Materialsmentioning

confidence: 99%

Section: Fem Analysismentioning

confidence: 99%

Section: Fem Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Comparison of Mechanical Property Simulations with Results of Limited Flexural Tests of Different Multi-Layer Carbon Fiber-Reinforced Polymer Composites

Bastovansky,

Smetanka,

Kohar

et al. 2024

Polymers

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Comprehensive research on the correlation between microstructure and mechanical properties of polyacrylonitrile‐based precursor fibers prepared by wet‐spinning

Liu,

Dai,

Guo

et al. 2024

J of Applied Polymer Sci

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Polyacrylonitrile (PAN)‐based precursor fibers with different mechanical properties prepared by wet‐spinning and its correlation with microstructure was researched, the primary structural factors that affecting its properties were analyzed. The tensile strength and modulus of precursor fibers increased from 4.63 cN/dtex to 9.16 cN/dtex and 99.09 cN/dtex to 168.92 cN/dtex, respectively, with the increase in crystallinity from 69.29% to 87.84% and orientation degree increased from 83.95% to 93.81%, high performance precursor fibers could be achieved by decrease in the crystallite size and interlayer spacing, these aggregation structure plays a decisive role to the mechanical properties of fibers. The integrality of aggregation structure and properties could reflected by boiling water shrinkage behavior and glass transition temperature from the side. The fracture morphology of fibers with different properties were studied by scanning electron microscope (SEM) and three fracture characteristics were observed, PF1 and PF3 presented the radial extended fracture without microfibril pull out, radial cluster fracture with the pull out of microfibril for PF2, PF4–PF6, together with the axial splitting pattern in PF6, which was revealed by microfibrils/fibrils in longitudinal and transverse combined with solution etching. Precursor fibers with less voids, without serious skin‐core, continuous arrangement, tightly stacked, well‐developed and complete oriented microfibrils/fibrils, exhibited excellent mechanical properties. Possible fracture process was given from the perspective of aggregation structure and microfibrils/fibrils, which become dominant factors determining properties of precursor fibers. Improve the performance could be achieved by regulating surface structure and cross‐sectional shape. As one of the main structural factors that determining properties, by reducing diameter could minimize the numbers and sizes of defects.

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Effect of fiber surface treatment with silane coupling agents and carbon nanotubes on mechanical properties of carbon fiber reinforced polyamide 6 composites

Du,

Xian,

Tian

et al. 2024

Polymer Composites

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The mechanical properties of carbon fiber (CF) reinforced thermoplastic polymer composites are primarily governed by the interphase between CFs and matrix. However, the inherent inertness of CF surfaces combined with the high viscosity and processing temperatures of thermoplastic resin often result in relatively weak interfacial bonding. This study aims to enhance the interfacial adhesion of carbon fiber reinforced polyamide 6 composites to improve their mechanical properties. CFs were de‐sized and oxidized, followed by re‐sizing with silanized carbon nanotubes. Fracture morphology and composition analysis of the fibers were conducted, and the fibers were subsequently incorporated into composites for mechanical testing. Results revealed a 20.0% increase in tensile strength, a 25.11% increase in flexural strength, and a 24.88% increase in interlaminar shear strength for the resized‐carbon fiber reinforced polyamide 6 composites compared to the pristine‐carbon fiber reinforced polyamide composites. The cross‐sectional morphology of the modified composites exhibited a zig‐zag fracture pattern. Dynamic mechanical analysis indicated that the modified fibers required higher activation energy for the free movement of the polyamide 6 molecular chain. These findings suggest that surface treatment enhances the interfacial adhesive between CF and resin, thereby significantly improving the mechanical properties of carbon fiber reinforced polyamide 6 composites.Highlights An efficient and reliable carbon fiber surface treatment method is proposed. Surface modification improves surface chemical activity of carbon fibers. Composites show substantial improvements in mechanical properties. Interfacial performance enhancement mechanism of composite was revealed.

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Design, preparation and mechanical properties of novel glass fiber reinforced polypropylene bending bars

Cited by 33 publications

References 40 publications

Comparison of Mechanical Property Simulations with Results of Limited Flexural Tests of Different Multi-Layer Carbon Fiber-Reinforced Polymer Composites

Comparison of Mechanical Property Simulations with Results of Limited Flexural Tests of Different Multi-Layer Carbon Fiber-Reinforced Polymer Composites

Comprehensive research on the correlation between microstructure and mechanical properties of polyacrylonitrile‐based precursor fibers prepared by wet‐spinning

Effect of fiber surface treatment with silane coupling agents and carbon nanotubes on mechanical properties of carbon fiber reinforced polyamide 6 composites

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