scholarly journals Investigation into fibre orientation and weldline reduction of injection moulded short glass-fibre/polyamide 6-6 automotive components

2019 ◽  
Vol 33 (12) ◽  
pp. 1603-1628
Author(s):  
Sarah Mosey ◽  
Feras Korkees ◽  
Andrew Rees ◽  
Gethin Llewelyn
Keyword(s):  
Glass Fibre ◽  
Fibre Orientation ◽  
Weight Ratio ◽  
Polyamide 6 ◽  
Processing Parameters ◽  
Material Strength ◽  
Reinforced Polymers ◽  
Automotive Components ◽  
Glass Fibre Reinforced ◽  
Component Failures

Due to the increasing demands on automotive components, manufacturers are relying on injection moulding components from fibre-reinforced polymers in an attempt to increase strength to weight ratio. The use of reinforcing fibres in injection moulded components has led to component failures whereby the material strength is hampered through the formation of weldlines which are also a problem for unreinforced plastics. In this study, an industrial demonstrator component has the injection locations verified through a combination of fibre orientation tensor simulation and optical microscopy analysis of key locations on the component. Furthermore, the automotive component manufactured from 30% glass fibre–reinforced polyamide 6-6 is simulated and optimized through a Taguchi parametric study. A comparison is made between the component, as it is currently manufactured, and the optimum processing parameters determined by the study. It was found that the component can be manufactured with roughly 7.5% fewer weldlines and with a mould fill time 132 ms quicker than the current manufacturing process.

The effects of Clay on fire performance and thermal mechanical properties of woven glass fibre reinforced polyamide 6 nanocomposites

2010 ◽  
Vol 70 (14) ◽  
pp. 2063-2067 ◽  
Author(s):  
Shirley Zhiqi Shen ◽  
Stuart Bateman ◽  
Patrick McMahon ◽  
Mel Dell’Olio ◽  
Januar Gotama ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Glass Fibre ◽  
Polyamide 6 ◽  
Fire Performance ◽  
Thermal Mechanical Properties ◽  
Glass Fibre Reinforced

scholarly journals Free-Volume and Tensile Properties of Glass Fibre Reinforced Polyamide~6 Composites

2017 ◽  
Vol 132 (5) ◽  
pp. 1501-1505
Author(s):  
E. Dryzek ◽  
M. Wróbel ◽  
E. Juszyńska-Gałązka
Keyword(s):  
Tensile Properties ◽  
Free Volume ◽  
Glass Fibre ◽  
Polyamide 6 ◽  
Glass Fibre Reinforced

Effect of Flexural Static Load on the Strength of GFRP Gratings

2014 ◽  
Vol 567 ◽  
pp. 387-392
Author(s):  
Amir Izzuddin ◽  
Ibrisam Akbar
Keyword(s):  
Glass Fibre ◽  
Vinyl Ester ◽  
Static Load ◽  
Weight Ratio ◽  
Water Area ◽  
High Resistivity ◽  
Glass Fibre Reinforced Polymer ◽  
Fibre Reinforced Polymer ◽  
Glass Fibre Reinforced ◽  
Deep Water Area

– The usage of steel in offshore deep water area contributes to the massive load of the offshore platform which will lead to the massive operational cost. Therefore, the reduction of weight of platform is the major issue that need to be tackled properly. The great improvement in strength to weight ratio compare to steel and high resistivity to corrosion makes Glass Fibre Reinforced Polymer (GFRP) grating preferable. GFRP gratings are normally made of two types of processes which are moulded and pultruded and it is usually consists of glass fibre and bonding matrixes of vinyl ester (VE), polyester (PE), or phenolic (PHE). However there is still doubt on GFRP grating application for offshore due to no consensus guidelines for the design of GFRP grating and there are many several types of GFRP grating available to be chosen. This paper presenting the study on two types of GFRP grating strength with variation of bonding matrixes under flexural static load. A total of six specimens of GFRP grating which consist of 1 each of molded vinyl ester, molded polyester, molded phenolic, pultruded vinyl ester, pultruded polyester and pultruded phenolic were tested to failure in flexure. The main parameters concerns in this study are 1) max load vs. mid-span deflection and 2) failure mode of the specimens.

scholarly journals Fire retardancy effect of aluminium phosphinate and melamine polyphosphate in glass fibre reinforced polyamide 6

e-Polymers ◽  
2010 ◽  
Vol 10 (1) ◽  
Author(s):  
Ulrike Braun ◽  
Horst Bahr ◽  
Bernhard Schartel
Keyword(s):  
Gas Phase ◽  
Glass Fibre ◽  
Phosphinic Acid ◽  
Polyamide 6 ◽  
Fire Retardancy ◽  
Fire Behaviour ◽  
Aluminium Phosphate ◽  
Flame Inhibition ◽  
Glass Fibre Reinforced ◽  
In Fire

AbstractThe fire retardancy mechanism of aluminium diethyl phosphinate (AlPi) and AlPi in combination with melamine polyphosphate (MPP) was investigated in glass-fibre reinforced polyamide 6 (PA6/GF) by analysing the pyrolysis, flammability and fire behaviour. AlPi in PA6/GF-AlPi partly vaporises as AlPi and partly decomposes to volatile diethylphosphinic acid (subsequently called phosphinic acid) and aluminium phosphate residue. In fire a predominant gasphase action was observed, but the material did not reach a V-0 classification for the moderate additive content used. For the combination of both AlPi and MPP in PA6/GF-AlPi-MPP a synergistic effect occurred, because of the reaction of MPP with AlPi. Aluminium phosphate is formed in the residue and melamine and phosphinic acid are released in the gas phase. The aluminium phosphate acts as a barrier for fuel and heat transport, whereas the melamine release results in fuel dilution and the phosphinic acid formation in flame inhibition. The higher amount of aluminium phosphate in PA6/GF-AlPi-MPP stabilised the residue in flammability tests in comparison to PA6/GF-AlPi, so that this material achieved a V-0 classification in the UL 94 test.

scholarly journals Porosity Determination of Carbon and Glass Fibre Reinforced Polymers Using Phase-Contrast Imaging

2018 ◽  
Vol 38 (1) ◽  
Author(s):  
Christian Gusenbauer ◽  
Michael Reiter ◽  
Bernhard Plank ◽  
Dietmar Salaberger ◽  
Sascha Senck ◽  
...  
Keyword(s):  
Glass Fibre ◽  
Phase Contrast ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
Reinforced Polymers ◽  
Glass Fibre Reinforced
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