Prediction of mechanical properties of recycled fiberglass reinforced polyamide 66

Eriksson, Peter; Albertsson, Ann‐Christine; Boydell, P.; Prautzsch, G.; Månson, J.-Å. E.

doi:10.1002/pc.10676

Cited by 50 publications

(22 citation statements)

References 17 publications

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“…where is the fibre strength and τ ∗ is the interfacial shear strength, r is radius of the fibre. The critical fibre length is estimated to be 204 μm, using the = 3500 MPa, r = 3.5 μm, τ ∗ = 60 MPa which are typical values for CF reinforced composites 35 . The reinforcing effect of the fibres increases with their lengths, which are supposed to be exceeding l c as much as possible to obtain high strength.…”

Section: Resultsmentioning

confidence: 99%

“…The mechanical properties of CF reinforced composites are largely affected by the volume fraction of fibres, fibre length distribution and the interfacial shear strength between fibres and matrix 35 . This paper establishes a modified Kelly-Tyson model 35 36 37 for predicting the tensile strength of the CF/PA12/EP ternary composites, taking into account the effects of fibre lengths as well as fibre-matrix interface. As to a ductile matrix and large strains in the composites, a linear increase of tensile stress in the fibre with distance from the ends can be assumed.…”

Section: Resultsmentioning

confidence: 99%

“…Hence, the CFs used in this study are shorter than l c . In this case, the composite strength can be given by 35 36 37 :…”

Section: Resultsmentioning

confidence: 99%

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A novel method based on selective laser sintering for preparing high-performance carbon fibres/polyamide12/epoxy ternary composites

Zhu

Yan

Shi³

et al. 2016

Sci Rep

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A novel method based on selective laser sintering (SLS) process is proposed for the first time to prepare complex and high-performance carbon fibres/polyamide12/epoxy (CF/PA12/EP) ternary composites. The procedures are briefly described as follows: prepare polyamide12 (PA12) coated carbon fibre (CF) composite powder; build porous green parts by SLS; infiltrate the green parts with high-performance thermosetting epoxy (EP) resin; and finally cure the resin at high temperature. The obtained composites are a ternary composite system consisting of the matrix of novolac EP resin, the reinforcement of CFs and the transition thin layer of PA12 with a thickness of 595 nm. The SEM images and micro-CT analysis prove that the ternary system is a three-dimensional co-continuous structure and the reinforcement of CFs are well dispersed in the matrix of EP with the volume fraction of 31%. Mechanical tests show that the composites fabricated by this method yield an ultimate tensile strength of 101.03 MPa and a flexural strength of 153.43 MPa, which are higher than those of most of the previously reported SLS materials. Therefore, the process proposed in this paper shows great potential for manufacturing complex, lightweight and high-performance CF reinforced composite components in aerospace, automotive industries and other areas.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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A novel method based on selective laser sintering for preparing high-performance carbon fibres/polyamide12/epoxy ternary composites

Zhu

Yan

Shi³

et al. 2016

Sci Rep

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“…Next, the composite stress σ C at given strain ε C is given by [6,14] (4) where τ and σ m are the average fiber/resin interfacial shear stress and stress in the resin, respectively, V i denotes volume fraction of fiber with the length l i and l C represents the critical fiber length given by…”

Section: Macromechanical Modelmentioning

confidence: 99%

“…Thomason [14,15] has discussed the effect of fiber length distribution on the mechanical properties in short glass-fiber reinforced composites. Eriksson et al [6] has reported the mechanical properties of recycled glass-fiber reinforced polyamide resin and predicted the strength based on the Kelly-Tyson model [5].…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of ABS resin reinforced with recycled CFRP

Ogi¹,

Nishikawa²,

Okano³

et al. 2007

Advanced Composite Materials

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This paper presents the mechanical properties of a composite consisting of acrylonitrilebutadiene-styrene (ABS) resin mixed with carbon fiber reinforced plastics (CFRP) pieces (CFRP/ ABS). CFRP pieces made by crushing CFRP wastes were utilized in this material. Nine kinds of CFRP/ABS compounds with different weight fraction and size of CFRP pieces were prepared. Firstly, tensile and flexural tests were performed for the specimens with various CFRP content. Next, fracture surfaces of the specimens were microscopically observed to investigate fracture behavior and fiber/resin interface. Finally, the tensile modulus and strength were discussed based on the macromechanical model. It is found that the elastic modulus increases linearly with increasing CFRP content while the strength changes nonlinearly. Microscopic observation revealed that most carbon fibers are separated individually and dispersed homogeneously in ABS resin. Epoxy resin particles originally from CFRP are dispersed in ABS resin and seem to be in good contact with surrounding resin. The modulus and strength can be expressed using a macromechanical model taking account of fiber orientation, length and interfacial bonding in short fiber composites.

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Short‐Fiber Thermoplastics Composites: Fiber Fracture During Melt Processing

Vaxman

Narkis

Siegmann

et al. 2012

Wiley Encyclopedia of Composites

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Conventional short‐fiber thermoplastic compounds (fiber length usually <1 mm) are manufactured by incorporation of short fibers into thermoplastic resins either by dry blending, before injection molding (IM), or by extrusion compounding, using single‐ or twin‐screw extruders. In extrusion compounding, the matrix resin and chopped fibers are melt mixed in an extruder, stranded, and pelletized. The high shear extrusion compounding process leads to significant fiber breakage. The length reduction decreases the reinforcement efficiency of the fibers. Experiments are described and the literature is reviewed, which characterize fiber length reduction in conventional processes. Fiber fracturing and attrition during processing are caused by stressed induced on the fiber by the melt flow conditions and stresses resulting from fiber‐fiber and fiber‐surface interactions. Fiber breakup is significant in recycling of fiber‐reinforced thermoplastics. Fiber attrition and fracture during melt compounding and subsequent melt processing operations are important phenomena that determine the final composite properties. In order to overcome this limitation, long‐fiber‐reinforced thermoplastics (LFT) have been developed to yield better mechanical properties and to meet the market demand by improvement of the reinforcement efficiency. This article reviews theoretical and experimental studies dealing with fiber breakage during melt flow compounding and processing of fiber‐reinforced thermoplastic composites.

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Prediction of mechanical properties of recycled fiberglass reinforced polyamide 66

Cited by 50 publications

References 17 publications

A novel method based on selective laser sintering for preparing high-performance carbon fibres/polyamide12/epoxy ternary composites

A novel method based on selective laser sintering for preparing high-performance carbon fibres/polyamide12/epoxy ternary composites

Mechanical properties of ABS resin reinforced with recycled CFRP

Short‐Fiber Thermoplastics Composites: Fiber Fracture During Melt Processing

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