In-Situ Bubble Stretching Assisted Melt Extrusion for the Preparation of HDPE/UHMWPE/CF Composites

Yin, Xianze; Yin, Yi; Cheng, Daojian; Feng, Yi; Zhang, Guizhen; Wen, Jinyu

doi:10.3390/polym11122054

Cited by 7 publications

(4 citation statements)

References 52 publications

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“…However, thermoplastic CFRP has some disadvantages, such as difficulties in resin impregnation, due to high melt viscosity and low resin flow, and mechanical properties due to weak bonding at the interface between the carbon fiber and polymer matrix over thermosetting CFRP [ 17 ]. Hence, extrusion and injection molding processes have been most frequently used to prepare thermoplastic CFRP using chopped carbon fibers [ 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Dual-Sizing Effects of Carbon Fiber on the Thermal, Mechanical, and Impact Properties of Carbon Fiber/ABS Composites

2021

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Dual-sizing effects with either epoxy or polyurethane (PU) on the thermal, mechanical, and impact properties of carbon fiber/acrylonitrile-butadiene-styrene (ABS) composites produced by extrusion and injection molding processes were investigated. The heat deflection temperature, dynamic mechanical, tensile, flexural, and impact properties of the composites reinforced with either (epoxy + epoxy) or (epoxy + PU) dual-sized carbon fiber were higher than those commercially single-sized with epoxy. The result indicated that the dual-sized carbon fiber significantly contributed not only to improving the heat deflection temperature and the storage modulus, but also to improving the tensile, flexural, and impact properties of carbon fiber/ABS composites. The highest improvement of the composite properties was obtained from the composite with (epoxy + PU) dual-sized carbon fiber. The improvement of the mechanical and impact properties was explained by the enhanced interfacial bonding between carbon fiber and ABS matrix and by the length distribution analysis of carbon fibers present in the resulting composites. The fiber–matrix interfacial behavior was qualitatively well-supported in terms of fiber pull-out, fiber breaking pattern, and debonding gaps between the fiber and the matrix, as observed from the fracture surface topography. This study revealed that the properties of carbon fiber/ABS composites prepared by extrusion and injection molding processes were improved by dual-sizing carbon fiber, which was performed after a commercial epoxy sizing process, and further improved by using PU as an additional sizing material.

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Section: Introductionmentioning

confidence: 99%

Dual-Sizing Effects of Carbon Fiber on the Thermal, Mechanical, and Impact Properties of Carbon Fiber/ABS Composites

2021

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“…There exist different flow fields in melt mixing device, including shear flow field and extensional flow field. It has been reported that the dispersion efficiency under the extensional flow is higher than that under the shear flow 19–21 when the deformation rate is equal. Moreover, although the introduction of HGBs into the polymer will reduce the dielectric constant of the composites slightly, 22–24 ball milling formed by HGBs is a well‐known effective way to break and disperse the fillers.…”

Section: Introductionmentioning

confidence: 99%

Improvement of the dielectric properties of polyvinylidene fluoride/reduced graphene oxide composites via in‐situ ball milling assisted extensional flow field

Yin

Wei

Wei-dong

et al. 2022

J of Applied Polymer Sci

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In this work, a new melt blending method under the synergy of in‐situ ball milling (ISBM) and extensional flow field are reported. The corresponding equipment and processing mechanism of this new method are introduced in detail. The improvement in the dielectric properties of polyvinylidene fluoride (PVDF)/reduced graphene oxide (rGO)/hollow glass beads (HGBs) composites are experimentally investigated. Benefit from uniform dispersion and reduced shattered rate of HGBs, the effect of ISBM on the rGO is strengthened. The results of SEM, TEM, XRD, and Raman spectra show that HGBs promote the exfoliation and dispersion of rGO in PVDF matrix. The addition of HGBs not only increases the dielectric constant of the composites, but also reduces the dielectric loss. When the content of rGO is 3.5 wt%, the dielectric constant of PVDF/rGO/HGBs (PRH) composites reaches 132.7, which is 63.2% higher than that of PVDF/rGO (PR) composites without HGBs. Moreover, the dielectric loss of PRH composites is 0.3, which is 23.3% lower than that of PR composites. To sum up, the new processing method is a simple, green and efficient way to enhance the dielectric properties of PVDF/rGO composites by improving the exfoliation and dispersion of rGO in PVDF.

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“…The maximum blend ratio of UHMWPE used was 50%. In‐situ bubble stretching (ISBS) assisted extrusion 19 used a special vane extruder to produce 9% UHMWPE/HDPE/carbon fiber (CF) blend by introducing the synergy of extensional deformation and ISBS. An eccentric rotor extruder was employed to pretreat UHMWPE before compression molding 20 .…”

Section: Introductionmentioning

confidence: 99%

Thermal, rheological, and mechanical characterization of compression and injection molded ultra‐high molecular weight polyethylene, high density polyethylene, and their blends

Yang

Yilmaz

Jiang

et al. 2022

J of Applied Polymer Sci

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Tensile and impact test samples of ultra‐high molecular weight polyethylene (UHMWPE), high‐density polyethylene (HDPE), and their blends at various UHMWPE/HDPE weight ratios were prepared via compression molding and injection molding for thermal, rheological, and mechanical characterization. A twin‐screw extruder with either a tapered die with air‐cooling or a regular die was used to compound and extrude the materials prior to pelletization and molding. To the best of our knowledge, there has been no publication on pelletizing neat UHMWPE using a regular extruder. The differential scanning calorimetry analysis suggested the occurrence of re‐crystallization and co‐crystallization for all the blends. The rheology test confirmed that all the blends exhibited a solid‐like behavior and the degree of compatibility increased with increasing HDPE content in the blends. A strong synergistic effect was observed the blends possessed a higher tensile and impact strength than their neat UHMWPE and HDPE counterparts. The compression molded (95/5) UHMWPE/HDPE samples extruded using the tapered die yielded the highest tensile strength (50.1 MPa), which was about 40% higher than that of the neat UHMWPE samples. The best composition of these blends for compression and injection molded parts is 10% HD and 50% HD, respectively.

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In-Situ Bubble Stretching Assisted Melt Extrusion for the Preparation of HDPE/UHMWPE/CF Composites

Cited by 7 publications

References 52 publications

Dual-Sizing Effects of Carbon Fiber on the Thermal, Mechanical, and Impact Properties of Carbon Fiber/ABS Composites

Dual-Sizing Effects of Carbon Fiber on the Thermal, Mechanical, and Impact Properties of Carbon Fiber/ABS Composites

Improvement of the dielectric properties of polyvinylidene fluoride/reduced graphene oxide composites via in‐situ ball milling assisted extensional flow field

Thermal, rheological, and mechanical characterization of compression and injection molded ultra‐high molecular weight polyethylene, high density polyethylene, and their blends

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