Deformation analysis of short glass fiber-reinforced polypropylene injection-molded plastic parts

Sikló, B.; Cameron, Kenny; Kovács, József

doi:10.1177/0731684411426203

Cited by 12 publications

(7 citation statements)

References 25 publications

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“…The highest shrinkage was detected in length direction in contrast to the glass fibre reinforced and glass bead filled products where the shrinkage (and warpage) in flow direction is decreased [25][26][27]. In case of 160°C the shrinkage of the specimens increased in length direction (side and middle section, too).…”

Section: Scanning Electron Microscope (Sem)mentioning

confidence: 92%

Injection moulded all-polypropylene composites composed of polypropylene fibre and polypropylene based thermoplastic elastomer

Kmetty

Bárány

Karger‐Kocsis

2012

Composites Science and Technology

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Section: Scanning Electron Microscope (Sem)mentioning

confidence: 92%

Injection moulded all-polypropylene composites composed of polypropylene fibre and polypropylene based thermoplastic elastomer

Kmetty

Bárány

Karger‐Kocsis

2012

Composites Science and Technology

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“…The composites combined of PP with short glass fiber (SGF) were one of the useful methods for enhancing the mechanical properties, especial strength and modulus. 23–29 Also, the effective reinforcement of SGF in the polymeric foams has been demonstrated. Shen and Nutt 30 and Desai et al.…”

Section: Introductionmentioning

confidence: 89%

Fabrication and characterization of short glass fiber reinforced polypropylene hybrid composite foams

Yang

Ding

Wang

et al. 2015

Journal of Reinforced Plastics and Composites

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To improve the comprehensive performances of polypropylene/ethylene-a-octene copolymer foams, short glass fiber was introduced to prepare polypropylene hybrid composite foams. Then, the effects of short glass fiber on the foaming qualities, interfacial morphologies, mechanical properties and energy absorption behavior of polypropylene hybrid composite foams were investigated. Results showed that the foaming qualities of the hybrid composite foams were improved greatly. The minimum average cell diameter and maximum cell density were achieved with adding 30% short glass fiber. From the analysis of interfacial structures, the interfacial interactions were mainly occurred in the polypropylene/short glass fiber and polypropylene/ethylene-a-octene copolymer pairs rather than short glass fiber/ethylene-a-octene copolymer pair. With increasing content of short glass fiber, the mechanical properties (excluding elastic modulus) of polypropylene hybrid composite foams were increased first and then declined. Within the study range, the energy absorption capability of polypropylene hybrid composite foams could be doubled with 30% short glass fiber added. The energyabsorption ratio was improved only with relative higher short glass fiber content, of which, however, the improvement was not as remarkable as that shown in the energy absorption capability.

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“…Benefiting from higher strength and stiffness, advanced fiber-reinforced composites have been widely applied in many areas such as aerospace and ship building. Due to thermal anisotropy of composite materials as well as resin chemical shrinkage and tool-part interaction, residual stresses are generated in composite parts during curing [ 1 , 2 ]. After curing, these residual stresses will cause the geometrical deformation of composite parts that are removed from the tool [ 3 , 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Modelling of Process-Induced Deformation for Composite Parts Considering Tool-Part Interaction

Qiao

Yao

2020

Materials

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Residual stresses are generated by tool-part interaction due to the large difference in the coefficients of thermal expansion (CTE) between the tool and the composite part, resulting in more process-induced part deformation. In this paper, a 3-D numerical model considering the influence of tool-part interaction is proposed to predict the deformation in complex-shape composite parts. In this numerical model, the existing path-dependent model is improved to consider the effect of tool-part interaction by adding the residual stress generated by tool-part interaction, and a simplified self-consistent micromechanics model is selected to predict the composite mechanical properties in the viscous and rubbery stages. The predicted and experimental spring-in angles of L- and U-shaped parts are compared. A good agreement shows the validity of the proposed numerical model. A parametric study is performed and the influence of part structural parameters on the spring-in angle is analyzed quantitatively. The results show that the spring-in angles caused by chemical shrinkage and tool-part interaction decrease with the increase of part thickness, but that caused by thermal contraction is almost constant.

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Deformation analysis of short glass fiber-reinforced polypropylene injection-molded plastic parts

Cited by 12 publications

References 25 publications

Injection moulded all-polypropylene composites composed of polypropylene fibre and polypropylene based thermoplastic elastomer

Injection moulded all-polypropylene composites composed of polypropylene fibre and polypropylene based thermoplastic elastomer

Fabrication and characterization of short glass fiber reinforced polypropylene hybrid composite foams

Modelling of Process-Induced Deformation for Composite Parts Considering Tool-Part Interaction

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