Effects of different fibers on the properties of short-fiber-reinforced polypropylene composites

Unterweger, Christoph; Brüggemann, Oliver; Fürst, Christian

doi:10.1016/j.compscitech.2014.08.014

Cited by 77 publications

(35 citation statements)

References 23 publications

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Section: Introductionmentioning

confidence: 99%

“…Polypropylene (PP) is a semicrystalline engineering thermoplastic, widely used in automotive parts, home appliances, extruded profiles, packaging industry, construction, etc., due to its low cost, low density, easy processibility, and well-balanced mechanical, physical, and chemical properties. [1][2][3][4][5][6][7][8][9][10][11][12][13][14] However, its use is limited in many engineering applications where good mechanical and thermal properties are required, due to its low Young's Modulus, strength, and thermal conductivity. 2 In order to provide a cost-effective solution, research in the last decade has mainly focused on reinforcing the PP with short fibers to improve its mechanical and thermal properties.…”

Section: Introductionmentioning

confidence: 99%

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Significance of the type of reinforcement on the physicomechanical behavior of short glass fiber and short carbon fiber‐reinforced polypropylene composites

Rudrappa

Srinivasachar²

2020

Engineering Reports

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In the present work, short glass fiber (SGF) and short carbon fiber (SCF)‐reinforced polypropylene (PP) composites are fabricated using twin‐screw extrusion and injection molding techniques. The SGF and SCF are reinforced as a single and hybrid reinforcement into the PP matrix with the same weight percentage (wt%) and the obtained composites are characterized for physicomechanical properties. It is observed that the tensile and flexural strength and modulus of elasticity of PP are improved by increasing the weight percent of reinforcement in the composite. The highest value is observed for composite with 30 wt% of SCF reinforcement; hybrid composite with 10 and 20 wt% of the mixture of SGF and SCF proves to outperform the other composites with the same weight percent of SGF and SCF added individually. The notched Izod impact strength of SGF + PP composite at 30 wt% is found to be the highest amongst all. Furthermore, the increased presence of SCF improved the tensile and flexural properties; however, it was not able to improve the impact strength significantly.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Significance of the type of reinforcement on the physicomechanical behavior of short glass fiber and short carbon fiber‐reinforced polypropylene composites

Rudrappa

Srinivasachar²

2020

Engineering Reports

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“…There have been many research articles dealing with the problem of the concentration, arrangement, and aspect ratio of fillers within a continuous phase, with the range of matrixes as wide as those from polymers to cement . The challenge is to find an optimum filler concentration to ensure the reinforcement of a material.…”

Section: Introductionmentioning

confidence: 99%

Can the maximum volume fraction ensure optimum reinforcement in short‐fiber composites?

Cruces

Garcı́a

Ochoa

2019

J of Applied Polymer Sci

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Short sisal fiber composites (SSFCs) based on a pectin matrix were prepared and characterized mechanical and optically. Different concentrations (1–30 wt %) of fibers were used to evaluate the packing effect on the reinforcement of a polymer matrix. Theoretical models were used to obtain the maximum packing or volume fraction (ϕmax) of randomly oriented short fibers and its relationship with the mechanical parameters. A higher elastic modulus and tensile strength were observed when the fiber content was increased in the composite at a fixed aspect ratio (length/diameter = 2.8). Material selection charts showed that SSFCs with a fiber concentration of 20 wt % had a higher reinforcement effect at ϕmax, as was predicted through theoretical models. Nevertheless, SSFCs with a fiber concentration of 7 wt % presented optimum reinforcement because it resulted in the strongest and lightest composite material. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47821.

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“…However, to our knowledge, the synergistic effect on the mechanical properties of short carbon fiber (SCF) reinforced PP composites via β‐modification and annealing treatment has not been reported. Compared with LGF, the SCF with shorter fiber aspect ratio, higher thermal conductivity and higher strength and modulus, may generate different effect on PP/SCF composites . Therefore, it is also meaningful to further study the relevant variation in PP/CF composites caused by β‐modification and annealing treatment.…”

Section: Introductionmentioning

confidence: 99%

Improving the impact strength of polypropylene/carbon fiber composites via β‐modification and annealing treatment

Liu

Yuan

Fang

et al. 2018

Polymer Crystallization

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The low impact strength of short carbon fiber (CF) reinforced polypropylene (PP) composites (PP/CF) restricts their practical application. Many studies focus on improving interfacial adhesion strength between PP and CF, while the essential properties of PP matrix are also significant, but rarely investigated for toughening PP/CF composites. In this work, the combination of β‐modification and annealing treatment were adopted to modify the intrinsic toughness of PP matrix, thereby enhancing the impact strength of PP/CF composites, meanwhile their flexural strength and modulus were almost maintained. From the XRD, DSC, POM, DMA and SAXS results, we observed that abundant β‐crystals with small size were produced in PP matrix after β‐modification. In addition, increased overall crystallinity, perfected crystals structure and looser amorphous region were generated after annealing treatment. These microstructure changes resulting from β‐modification and annealing treatment, together triggered the plastic deformation of PP matrix, which was the main reason for toughening PP/CF composites.

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Effects of different fibers on the properties of short-fiber-reinforced polypropylene composites

Cited by 77 publications

References 23 publications

Significance of the type of reinforcement on the physicomechanical behavior of short glass fiber and short carbon fiber‐reinforced polypropylene composites

Significance of the type of reinforcement on the physicomechanical behavior of short glass fiber and short carbon fiber‐reinforced polypropylene composites

Can the maximum volume fraction ensure optimum reinforcement in short‐fiber composites?

Improving the impact strength of polypropylene/carbon fiber composites via β‐modification and annealing treatment

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