The influence of fibre length and concentration on the properties of glass fibre reinforced polypropylene: 2. Thermal properties

Thomason, James; Groenewoud, W.M.

doi:10.1016/1359-835x(96)00016-4

Cited by 62 publications

(53 citation statements)

References 21 publications

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“…For glass fibre [38][39] and even some natural fibre composites [40] these models give good predictions. However, for most natural fibre reinforced composites these models tend to overestimate the properties, particularly at high fibre content because they do not take into account on the effect of voids in the matrix, the lumen in the plant fibres, the distribution of fibres and additional fillers in the composites and fibre straightness, etc.…”

Section: Micromechanical Modellingmentioning

confidence: 99%

Hemp fibre as alternative to glass fibre in sheet moulding compound Part 1 – influence of fibre content and surface treatment on mechanical properties

Patel

Ren

Hogg

et al. 2010

Plastics, Rubber and Composites

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Hemp fibre mat reinforced polyester composites were fabricated using a conventional sheet moulding compound (SMC) process. The influence of fibre and CaCO 3 filler content on strength and stiffness of the HF-SMCs is reported and compared with data for chopped glass fibre reinforced sheet moulding compounds (GF-SMCs). In addition the influence of alkaline and silane treatments of the hemp fibres is evaluated. The experimental data is compared to modified versions of the Cox-Krenchel and Kelly-Tyson models, supplemented with parameters of composite porosity to improve the prediction of composite tensile properties. A good agreement was found between the modified models and experimental data for strength and stiffness. The results indicate that HF-SMCs are of interest for lowcost engineering applications that require high stiffness to weight ratios.

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Section: Micromechanical Modellingmentioning

confidence: 99%

Hemp fibre as alternative to glass fibre in sheet moulding compound Part 1 – influence of fibre content and surface treatment on mechanical properties

Patel

Ren

Hogg

et al. 2010

Plastics, Rubber and Composites

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“…They are also likely to modify the (transcrystalline) interphase structure [36]. Knowing that the very first damage step of long fibre reinforced thermoplastics is fibre/matrix debonding [4], the impact behaviour may be consequently affected by nucleating agent addition. It is therefore worth assessing the influence on the impact properties of the addition of nucleating agents on the one hand, of their chemical nature on the other hand, and finally of the mould temperature (which governs the parts cooling rate).…”

Section: Influence Of the Addition Of Nucleating Agentsmentioning

confidence: 99%

Injection moulding of long glass fibre reinforced poly(ethylene terephtalate): Influence of carbon black and nucleating agents on impact properties

Cilleruelo¹,

Lafranche²,

Krawczak³

et al. 2012

Express Polym. Lett.

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This paper aims at highlighting the influence of different additives (carbon black and nucleating agents) on both the notched and unnotched Charpy impact properties of long glass fibre reinforced poly(ethylene terephtalate) injection mouldings. The relationship with the polymer matrix and composite microstructure modifications (variations of crystalline morphology and local fibre content) was investigated. Adding carbon black alone decreases the impact performances. This highly conductive additive actually increases the cooling rate, and therefore the fibre ‘frettage’ effect (higher internal stresses). It also acts as filler, which increases the material brittleness. The nucleating agents allow reducing the mould temperature, but their effect on the impact strength may be favourable or not depending on the processing temperatures. The addition of such additives induces perturbations of the polymer melt rheology in the mould cavity and of the cooling kinetics of the part, which both act on the fibre distribution during mould filling and on the degree of crystallinity of the composite parts

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“…A hypothesis that the average calculated stiffness of five different realisations is not sensitive to any changes regarding the spacial position or the orientation of fibres has been tested using a chi-square test. Chi square test was used as expressed through equation (8). Note that for the current study the critical value of the chi-square test was calculated based on the accuracy of 97.5 in combination with 3 degrees of freedom.…”

Section: Steps 4 and 5: Statistical Analysis And Effective Propertiesmentioning

confidence: 99%

“…It is thus, characterisation of short fibre reinforced composite has attracted a lot of interest recently. Various approaches have been reported regarding numerical ( [2,3,4,5,6,7]), experimental ( [8]) and analytical characterisation of SFRC. Building upon our earlier study the analyses of micro-mechanical parameters of SFRCs [9], [10] this study continues exploring the topic in order to widen it to the thermal and thermo-mechanical classes of problems.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Thermal and Thermo-mechanical Effective Properties for Short Fibre Reinforced Composite

2016

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This study aims to investigate the thermal conductivity and the linear coefficient of thermal expansion for short fibre reinforced composites. The study combines numerical and statistical analyses in order to primarily examine the representative size and the effective properties of the volume element. Effects of various micromechanical parameters, such as fibre's aspect ratio and fibre's orientation, on the minimum representative size are discussed. The numerically acquired effective properties, obtained for the representative size, are presented and compared with analytical models.

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The influence of fibre length and concentration on the properties of glass fibre reinforced polypropylene: 2. Thermal properties

Cited by 62 publications

References 21 publications

Hemp fibre as alternative to glass fibre in sheet moulding compound Part 1 – influence of fibre content and surface treatment on mechanical properties

Hemp fibre as alternative to glass fibre in sheet moulding compound Part 1 – influence of fibre content and surface treatment on mechanical properties

Injection moulding of long glass fibre reinforced poly(ethylene terephtalate): Influence of carbon black and nucleating agents on impact properties

Numerical Investigation of Thermal and Thermo-mechanical Effective Properties for Short Fibre Reinforced Composite

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