Experimental investigation of the effect of glass fibres on the mechanical properties of polypropylene (PP) and polyamide 6 (PA6) plastics

Güllü, Abdulkadir; Özdemir, Ahmet; Özdemir, Emin

doi:10.1016/j.matdes.2004.10.013

Cited by 115 publications

(75 citation statements)

References 4 publications

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“…Studies on the mechanical properties of glass fiber reinforced PA have analyzed the physical properties of glass fiber that influence the performance of glass fiber reinforced PA66 composites (Thomason, 1999;Güllü et al, 2006). The stressstrain relationships of glass fiber reinforced PA66 were demonstrated experimentally and described analytically using a nonlinear damage model (Zhou and Mallick, 2005).…”

Section: Introductionmentioning

confidence: 99%

A Study on the Mechanical Property and 3D Fiber Distribution in Injection Molded Glass Fiber Reinforced PA66

Ryu¹,

Lyu

2014

International Polymer Processing

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A Study on the Mechanical Property and 3D Fiber Distribution in Injection Molded Glass Fiber Reinforced PA66Polyamide66 (PA66) is being widely used for automobile part and other applications. In many cases, PA66 is reinforced with glass fiber to enhance its mechanical properties. In this study, the mechanical properties and glass fiber distributions in injection molded part have been investigated for glass fiber reinforced PA66. Two shapes of glass fibers, circular and flat, were used for the glass fiber reinforced PA66. X-ray microtomography (micro-CT) was used to observe the glass fiber distributions in the PA66 composites. Micro-CT photos were taken in three directions to observe the three-dimensional glass fiber distributions in the injection molded specimens. Investigation of the mechanical properties in relation to the glass fiber orientation revealed that the orientation of the fibers enhanced the mechanical properties. Glass fibers with smaller diameters resulted in better mechanical properties. Circular glass fiber reinforced PA66 exhibited better mechanical properties than flat glass fiber reinforced PA66. The skin layer showed that the glass fibers strongly orientated to the flow direction while glass fibers in the core layer orientated perpendicular to the flow direction because of fountain flows. Glass fibers in the core layer also oriented to the width direction of the flow. Consequently, glass fibers in this core region oriented three dimensionally. Full three-dimensional model of glass fiber orientation was proposed in this paper.

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Section: Introductionmentioning

confidence: 99%

A Study on the Mechanical Property and 3D Fiber Distribution in Injection Molded Glass Fiber Reinforced PA66

Ryu¹,

Lyu

2014

International Polymer Processing

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“…The average fiber orientation is determined by the proportion of the thickness of the skin and core layers. Generally growing injection rate, melt temperature, and mold temperature decrease the thickness of the skin layer, therefore the average fiber orientation will be smaller [15–20]. A fiber segregation phenomenon through the thickness and along the flow length and width has been observed by different authors both on short and long fiber reinforced thermoplastics [13].…”

Section: Introductionmentioning

confidence: 99%

Manufacturing and testing of long basalt fiber reinforced thermoplastic matrix composites

Deák

Czigány

Maršálková

et al. 2010

Polymer Engineering & Sci

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In this work, long basalt fiber reinforced composites were investigated and compared with short basalt fiber reinforced compounds. The results show that long fiber reinforced thermoplastic composites are particularly advantageous in the respects of dynamic mechanical properties and injection molding shrinkage. The fiber orientation in long basalt fiber reinforced products fundamentally differs from short basalt fiber reinforced ones. This results in more isotropic molding shrinkage in case of long basalt fiber reinforced composites. The main advantage of the used long fiber thermoplastic technology is that the special long fiber reinforced pellet can be processed by most conventional injection molding machines. During extrusion compounding the fibers in the compound containing 30 wt% fibers are fragmented to an average length of 0.48 mm (typical of short fiber reinforced thermoplastic compounds), this length decreases further during injection molding to 0.20 mm. Contrarily using long fiber reinforced pellets and cautious injection molding parameters, an average fiber length of 1.8 mm can be achieved with a conventional injection molding machine, which increased the average length/diameter ratio from 14 to 130. POLYM. ENG. SCI., 2010. © 2010 Society of Plastics Engineers

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“…In order to improve the mechanical properties, reinforced materials are added to plastics [2]. The use of glass-reinforced polymers is well-known to generate wear damage in the moldings [3,4] and a number of coatings and surface treatments have been used to prolong component life [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Micro-abrasion wear behaviour of TiAlCrSiN nanostructured coatings

Martinho

Andrade

Silva

et al. 2009

Wear

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The injection process of glass fibres reinforced plastics promotes the moulds surface degradation by erosion. In order to improve its wear resistance, several kinds of PVD thin hard coatings were used. It is well-known that nanostructures present a better compromise between hardness and toughness. Indeed, when the coating is constituted by a large number of ultra-thin different layers, cracks and interface troubles tend to decrease. However, it is not clear that these nanostructures present a better wear behaviour in erosion processes. In order to study its wear behaviour, a sputtered PVD nanos-tructured TiAlCrSiN coating was used. The substrate and film surfaces topography were analyzed by profilometry and atomic force microscopy techniques. Film adhesion to the substrate was evaluated by scratch tests. The surface hardness was measured with a Vickers micro-hardness tester. The wear resistance was evaluated by micro-abrasion with a rotating ball tribometer tests. Slurry of SiC parti-cles in distilled water was used in order to provoke the surface abrasion. Different duration tests were performed in order to analyze the wear evolution. After these tests, the wear mechanisms developed were analyzed by scanning electron microscopy. Wear craters were measured and the wear rate was calculated and discussed. With the same purpose, coated inserts were mounted in an injection mould working with a 30% glass fibres reinforced polypropylene. After 45 000 cycles no relevant wear was registered.

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Experimental investigation of the effect of glass fibres on the mechanical properties of polypropylene (PP) and polyamide 6 (PA6) plastics

Cited by 115 publications

References 4 publications

A Study on the Mechanical Property and 3D Fiber Distribution in Injection Molded Glass Fiber Reinforced PA66

A Study on the Mechanical Property and 3D Fiber Distribution in Injection Molded Glass Fiber Reinforced PA66

Manufacturing and testing of long basalt fiber reinforced thermoplastic matrix composites

Micro-abrasion wear behaviour of TiAlCrSiN nanostructured coatings

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