Hybrid Self-Reinforced Composite Materials Based on Ultra-High Molecular Weight Polyethylene

Zherebtsov, Dmitry D.; Chukov, Dilyus I.; Statnik, Eugene S.; Torokhov, Valerii

doi:10.3390/ma13071739

Cited by 19 publications

(12 citation statements)

References 41 publications

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“…In contrast, the elevated pressure allows preserving the orientation of crystallites and crystalline molecular chains due to the less-intense melting of pristine fibers. This interpretation was supported by the data from differential scanning calorimetry [20]. Overall, elevated temperature as well as pressure release result in the decrease of degree of orientation and, highly likely, in deterioration of mechanical performance.…”

Section: Waxs Analysismentioning

confidence: 66%

“…SRCs based on UHMWPE manufactured by hot compaction were studied since the end of 1990s until recently [ 11 , 18 , 19 , 20 , 21 ], and the influence of hot compaction conditions on the properties of SRCs has been reported. However, the processing—structure—properties—performance interrelation has not been understood fundamentally.…”

Section: Introductionmentioning

confidence: 99%

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On the Structural Peculiarities of Self-Reinforced Composite Materials Based on UHMWPE Fibers

et al. 2021

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The structure of self-reinforced composites (SRCs) based on ultra-high molecular weight polyethylene (UHMWPE) was studied by means of Wide-Angle X-ray Scattering (WAXS), X-ray tomography, Raman spectroscopy, Scanning Electron Microscopy (SEM) and in situ tensile testing in combination with advanced processing tools to determine the correlation between the processing conditions, on one hand, and the molecular structure and mechanical properties, on the other. SRCs were fabricated by hot compaction of UHMWPE fibers at different pressure and temperature combinations without addition of polymer matrix or softener. It was found by WAXS that higher compaction temperatures led to more extensive melting of fibers with the corresponding reduction of the Herman’s factor reflecting the degree of molecular orientation, while the increase of hot compaction pressure suppressed the melting of fibers within SRCs at a given temperature. X-ray tomography proved the absence of porosity while polarized light Raman spectroscopy measurements for both longitudinal and perpendicular fiber orientations showed qualitatively the anisotropy of SRC samples. SEM revealed that the matrix was formed by interlayers of molten polymer entrapped between fibers in SRCs. Moreover, in situ tensile tests demonstrated the increase of Young’s modulus and tensile strength with increasing temperature.

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Section: Waxs Analysismentioning

confidence: 66%

Section: Introductionmentioning

confidence: 99%

On the Structural Peculiarities of Self-Reinforced Composite Materials Based on UHMWPE Fibers

et al. 2021

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“…It is interesting to note that the shear resistance found both in the DoE optimization and in some of the unoptimized experiments carried out was superior even to the single-lap shear strength of UHMWPE/UHMWPE SRCs [ 88 ], which varied from 1.1 to 3.8 MPa depending on the processing parameters, demonstrating the extremely high performance of the reprocessed matrix SRC studied herein.…”

Section: Resultsmentioning

confidence: 97%

In-Plane Shear Strength of Single-Lap Co-Cured Joints of Self-Reinforced Polyethylene Composites

et al. 2021

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The present study introduces the analysis of single-lap co-cured joints of thermoplastic self-reinforced composites made with reprocessed low-density polyethylene (LDPE) and reinforced by ultra-high-molecular-weight polyethylene (UHMWPE) fibers, along with a micromechanical analysis of its constituents. A set of optimal processing conditions for manufacturing these joints by hot-press is proposed through a design of experiment using the response surface method to maximize their in-plane shear strength by carrying tensile tests on co-cured tapes. Optimal processing conditions were found at 1 bar, 115 °C, and 300 s, yielding joints with 6.88 MPa of shear strength. The shear failure is generally preceded by multiple debonding-induced longitudinal cracks both inside and outside the joint due to accumulated transversal stress. This composite demonstrated to be an interesting structural material to be more widely applied in industry, possessing extremely elevated specific mechanical properties, progressive damage of co-cured joints (thus avoiding unannounced catastrophic failures) and ultimate recyclability.

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“…SRCs based on UHMWPE manufactured by hot compaction were studied since the end of 1990s until recently [11,[18][19][20][21], and the influence of hot compaction conditions on the properties of SRCs has been reported. However, the processing-structure-propertiesperformance interrelation has not been understood fundamentally.…”

Section: Introductionmentioning

confidence: 99%

On the Structural Peculiarities of Self-Reinforced Composite Materials Based on UHMWPE Fibers

Zherebtsov

Chukov

Royaud

et al. 2021

Preprint

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The structure of self-reinforced composites (SRCs) based on ultra-high molecular weight 21 polyethylene (UHMWPE) was studied by means of Wide-Angle X-Ray Scattering (WAXS), X-Ray 22 tomography, Raman spectroscopy, Scanning Electron Microscopy (SEM) and in situ tensile testing 23 in combination with advanced processing tools like Avizo, ImageJ, and Ncorr to determine the cor-24 relation between the processing conditions, on the one hand, and the molecular structure and 25 mechanical properties, on the other. SRCs were fabricated by hot compaction of UHMWPE fibers at 26 different pressure and temperature combinations without addition of polymer matrix or softener. 27 It was found by WAXS that higher compaction temperatures led to more extensive melting of 28 fibers with the corresponding reduction of the Herman’s factor reflecting the degree of molecular 29 orientation, while the increase of hot compaction pressure suppressed the melting of fibers within 30 SRCs at a given temperature. X-Ray tomography proved the absence of porosity while polarized 31 light Raman spectroscopy measurements for both longitudinal and perpendicular fiber orienta-32 tions showed qualitatively the anisotropy of SRC samples. SEM revealed that the matrix was 33 formed by interlayers of molten polymer entrapped between fibers in SRCs. Moreover, in situ 34 tensile tests demonstrated the increase of Young’s modulus and tensile strength with increasing 35 temperature.

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Hybrid Self-Reinforced Composite Materials Based on Ultra-High Molecular Weight Polyethylene

Cited by 19 publications

References 41 publications

On the Structural Peculiarities of Self-Reinforced Composite Materials Based on UHMWPE Fibers

On the Structural Peculiarities of Self-Reinforced Composite Materials Based on UHMWPE Fibers

In-Plane Shear Strength of Single-Lap Co-Cured Joints of Self-Reinforced Polyethylene Composites

On the Structural Peculiarities of Self-Reinforced Composite Materials Based on UHMWPE Fibers

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