An experimental study of glass fibre roving sizings and yarn finishes in high-performance GF-PA6 and GF-PPS composite laminates

Kiss, Péter; Schoefer, Joachim; Stadlbauer, W.; Burgstaller, Christoph; Archodoulaki, Vasiliki‐Maria

doi:10.1016/j.compositesb.2020.108487

Cited by 19 publications

(15 citation statements)

References 49 publications

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“…Thus, the use of thermoplastic composites in engineering applications has been growing at a steady rate in recent years. [1][2][3][4][5][6] These materials that combine low density and high mechanical properties can be produced by controlled processes like thermocompression (organosheet), stamping/overmolding, or tape placement. [7][8][9] Moreover, their disposal for recycling [10][11][12][13][14] is a major advantage in many industrial areas, especially in the automobile sector in which fuel consumption and pollutant emission are directly related to vehicle weight.…”

Section: Introductionmentioning

confidence: 99%

“…The abrasion properties of glass fiber-reinforced composites are significantly improved by hybridization with nylon 6 fibers although some mechanical properties may be adversely affected. Various yarn finishes and a range of glass fiber coatings were studied by Kiss et al 2 for the thermocompression manufacturing of high performance laminate composites based on PA6 or PPS. Their compatibility with these polymers and the mechanical performances of the derived composites were evaluated by 3-point bending and short-beam-shear tests.…”

Section: Introductionmentioning

confidence: 99%

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Experimental investigation of the mechanical behavior of glass fiber/high fluidity polyamide-based composites for automotive market

Ramezani-Dana

Gomina

Bréard

et al. 2021

Journal of Reinforced Plastics and Composites

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In this work, we examine the relationships between the microstructure and the mechanical properties of glass fiber–reinforced polyamide 6,6 composite materials ( V f = 54%). These materials made by thermocompression incorporate different grades of high fluidity polyamide-based polymers and two types of quasi-UD glass fiber reinforcement. One is a classic commercial fabric, while the other specially designed and manufactured incorporates weaker tex glass yarns (the spacer) to increase the planar permeability of the preform. The effects of the viscosity of the polymers and their composition on the wettability of the reinforcements were analyzed by scanning electron microscopy observations of the microstructure. The respective influences of the polymers and the spacer on the mechanical performance were determined by uniaxial tensile and compression tests in the directions parallel and transverse to the warp yarns. Not only does the spacer enhance permeability but it also improves physical and mechanical properties: tensile longitudinal Young’s modulus increased from 38.2 GPa to 42.9 GPa (13% growth), tensile strength increased from 618.9 MPa to 697 MPa (3% growth), and decrease in ultimate strain from 1.8% to 1.7% (5% reduction). The correlation of these results with the damage observed post mortem confirms those acquired from analyses of the microstructure of composites and the rheological behaviors of polymers.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental investigation of the mechanical behavior of glass fiber/high fluidity polyamide-based composites for automotive market

Ramezani-Dana

Gomina

Bréard

et al. 2021

Journal of Reinforced Plastics and Composites

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“…Thermoplastic composites (TPCs) are a class of polymers that have attracted much attention due to the desirable combination of good mechanical properties, ease of manufacture, low density and their ease of recycling [1,2]. In recent years, the industrial demand for glass fibre reinforced polyamides has increased, especially in the automotive sector, due to their excellent thermal stability, high toughness and stiffness [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, the industrial demand for glass fibre reinforced polyamides has increased, especially in the automotive sector, due to their excellent thermal stability, high toughness and stiffness [3][4][5][6][7]. For example, Polyamide 6 with glass fibre reinforcement offers good thermal stability, and higher tensile strength [1,8], which makes it an attractive material for the automotive industry. Often there is a requirement that the TPC is bonded to other structural materials, such as metals or other composites.…”

Section: Introductionmentioning

confidence: 99%

“…However, there are no comparable studies involving polyamides (either filled or unfilled). In the case of polyamide 6, the measurement will be complicated because of the hygroscopic nature of the material [1], which can influence the accuracy of the contact angle measurement when using water. Moreover, the existence of fibres in fibre-reinforced polymer composites significantly increases the roughness of the material surface, which can also affect the contact angles.…”

Section: Introductionmentioning

confidence: 99%

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Effect of μPlasma Modification on the Wettability and the Ageing Behaviour of Glass Fibre Reinforced Polyamide 6 (GFPA6)

Che

Dashtbozorg

et al. 2021

Materials

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Glass fibre reinforced polyamide 6 (GFPA6) thermoplastic composites (TPCs) are promising materials with excellent properties, but due to their low surface free energy they are usually difficult to wet, and therefore, possesses poor adhesion properties. μPlasma modification offers potential solutions to this problem through functionalisation of the GFPA6 surface. In this study, the effect of μPlasma on the wetting behaviour of GFPA6 surfaces was investigated. Following single μPlasma treatment scans of GFPA6 samples, a substantial enhancement in wettability was observed. However, the effect of the μPlasma modification was subject to an ageing (hydrophobic recovery) phenomenon, although the enhancement was still partially maintained after 4 weeks. The ageing process was slower when the GFPA6 material was pre-dried and stored in low humidity conditions, thereby demonstrating the importance of the storage environment to the rate of ageing. Orientation of the fibres to the observed contact angle was found to be crucial for obtaining reproducible measurements with lower deviation. The influence of testing liquid, droplet volume and surface texture on the repeatability of the measured contact angle were also investigated.

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Enhancement of interfacial properties of carbon fiber reinforced polyphenylene sulfide resin by sulfur treatment

Yang

Zhang

et al. 2023

J of Applied Polymer Sci

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The properties of carbon fiber (CF) reinforced thermoplastic resin composites depend on the physical and chemical interaction between the fibers and the resins. However, surface oxidation is not always necessary. In this study, the interaction between CF and Polyphenylene sulfide (PPS) is enhanced by using an emulsion of reactive sulfur to treat the CF surface. The interlaminar shear strength (ILSS) of CF/PPS composites is experimentally investigated and found to be up to 79.7 MPa, an increase of 36.1% compared to the untreated CF. The enhancement mechanism of the modification method established is inferred. Scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS) results showed that sulfur etching on the surface of CF generated new functional groups, which improved the interfacial effect, and tightened the bond between CF and PPS. This indicates that sulfur treatment along with sizing must be a simpler method than surface oxidation to promote the interfacial bonding between CF and PPS.

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An experimental study of glass fibre roving sizings and yarn finishes in high-performance GF-PA6 and GF-PPS composite laminates

Cited by 19 publications

References 49 publications

Experimental investigation of the mechanical behavior of glass fiber/high fluidity polyamide-based composites for automotive market

Experimental investigation of the mechanical behavior of glass fiber/high fluidity polyamide-based composites for automotive market

Effect of μPlasma Modification on the Wettability and the Ageing Behaviour of Glass Fibre Reinforced Polyamide 6 (GFPA6)

Enhancement of interfacial properties of carbon fiber reinforced polyphenylene sulfide resin by sulfur treatment

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