Effect of polypropylene-grafted-maleic anhydride content on physical properties of carbon fiber reinforced polypropylene composites

Jang, Ji-un; Youn, Sang Jun; Kim, Seong Yun; Park, Min

doi:10.1088/2631-6331/abd374

Cited by 8 publications

(2 citation statements)

References 25 publications

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“…23 At present, the processing equipment used in melt mixing are generally screw devices dominated by shear flow. [24][25][26][27][28][29][30][31][32][33][34][35] Adjusting shear strength by changing process parameters can affect the final morphology and properties of composites. 36,37 The commonly used processing methods for the preparation of Polypropylene/carbon fibers (PP/CFs) composites are shown in Table 1.…”

Section: Introductionmentioning

confidence: 99%

Development of pulsating extensional stress induced melt mixer and its application for polypropylene/carbon fibers composites

Yin

Wei

Lin

et al. 2023

Journal of Thermoplastic Composite Materials

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In this work, a pulsating extensional stress induced melt mixer was developed. The compositions, structure, working principle, and melt mixing process of the device were introduced in detail. The mixer generated a full-process pulsating extension deformation effect on materials by the eccentric vane units and arc-shaped flow channels, which greatly promoted the dispersion and mixing of the materials. Polypropylene/carbon fibers (PP/CFs) composites were prepared by the new mixer, and the effects of different rotational speeds and mixing time on the properties of the composites were studied. The results showed that proper rotational speed and mixing time effectively promoted the dispersion of CFs in PP matrix, while the fibers still had long remaining lengths. As a result, the overall properties, especially the mechanical properties of the PP/CFs composites improved. When the CFs content was 30 wt.%, at the process parameters of 20 r/min and 2 min, compared with pure PP, the tensile strength (58.46 MPa) and modulus (1962 MPa) of the PP/CFs composite were increased by 78.6% and 263.3%, respectively.

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Section: Introductionmentioning

confidence: 99%

Development of pulsating extensional stress induced melt mixer and its application for polypropylene/carbon fibers composites

Yin

Wei

Lin

et al. 2023

Journal of Thermoplastic Composite Materials

View full text Add to dashboard Cite

show abstract

“…Traditionally, metal materials such as aluminum (3.45 × 10 7 S m −1 [2]) and copper (5.85 × 10 7 S m −1 [2]) are mainly used as conductive materials because of the most important advantage in the aspect of the electrical conductivity [2]. However, since metal materials have high density and relatively poor processability, interest in lightweight conductive composites, especially carbon composites filled with a high-conductivity carbon filler into a polymer with excellent processability and light weight, applicable to complex and precise structures, is rapidly increasing [3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Synergistic enhancement in electrical conductivity of polymer composites simultaneously filled with multi-walled carbon nanotube and pitch-based carbon fiber via one-step solvent-free fabrication

Kang¹,

Kim²,

Kim³

et al. 2022

Funct. Compos. Struct.

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Recently, studies have been reported to synergistically improve the electrical conductivity of polymer composites by simultaneously incorporating hybrid fillers, but systematic studies on filler loading and ratio are still scarce. In this study, a one-step process was proposed to induce the incorporation of uniformly dispersed fillers with a high content, and synergistic improvement in the electrical conductivity of polymer composites was studied by applying two types of carbon fillers: nano-sized multi-walled carbon nanotube (MWCNT) and micro-sized pitch-based carbon fiber (PCF). Based on the proposed process, it was possible to fabricate a polymer composite in which the filler was uniformly dispersed within 40 wt%. The electrical conductivity of the composite containing up to 10 wt% MWCNT which was the percolation plateau content and 30 wt% PCF was 3940 S/m, showing the maximum performance. This result was improved by 595% and 586%, respectively, compared to the electrical conductivity of the composite containing only 40 wt% MWCNT or PCF. These findings can contribute to expanding the application of conductive composites in the fields of antistatic or electromagnetic interference shielding by providing insight into the optimal design of hybrid filler systems to improve the electrical conductivity of composites.

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Optimized mechanical properties of carbon fiber reinforced thermoplastics by tuning polymer chain length based on quad‐screw extrusion

Choi,

Kim,

Kim

2024

Polymer Composites

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There is a need for cost‐effective manufacturing methods to optimize the impregnation and mechanical properties of carbon fiber reinforced thermoplastics (CFRTPs) by overcoming the low flowability of thermoplastics due to their high melt viscosity. In this study, to improve the impregnation of the CFRTP by inducing low melt viscosity, a strategy to control the molecular weight (MW) of thermoplastic polymer was developed. Through the quad‐screw extrusion (QSE) process, as the rotational speed of the QSE increased, the MW of the polypropylene (PP) matrix decreased, resulting in improved flowability and impregnation characteristics of the matrix, as well as enhanced mechanical strength of the CFRTP. The tensile and flexural strengths of the CFRTP were optimized at 1500 rpm, resulting in 77% and 23% improvements, respectively, compared to the CFRTP with raw PP. Therefore, the applied QSE process effectively controlled the MW, melt viscosity, and flowability of the PP matrix and produced CFRTP with improved mechanical strength.Highlights Mechanical degradation using QSE was applied to improve flowability of matrix. As polymer chain length decreased, impregnation between CF and matrix was improved. The improved impregnation characteristics resulted in the improved mechanical strengths. There is an optimal matrix MW to optimize the mechanical strengths of CFRTP.

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Effect of polypropylene-grafted-maleic anhydride content on physical properties of carbon fiber reinforced polypropylene composites

Cited by 8 publications

References 25 publications

Development of pulsating extensional stress induced melt mixer and its application for polypropylene/carbon fibers composites

Development of pulsating extensional stress induced melt mixer and its application for polypropylene/carbon fibers composites

Synergistic enhancement in electrical conductivity of polymer composites simultaneously filled with multi-walled carbon nanotube and pitch-based carbon fiber via one-step solvent-free fabrication

Optimized mechanical properties of carbon fiber reinforced thermoplastics by tuning polymer chain length based on quad‐screw extrusion

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