scholarly journals Influence of the fibre/matrix interface on ageing mechanisms of glass fibre reinforced thermoplastic composites (PA-6,6, PET, PBT) in a hygrothermal environment

2009 ◽  
Vol 94 (9) ◽  
pp. 1315-1324 ◽  
Author(s):  
A. Bergeret ◽  
L. Ferry ◽  
P. Ienny
Keyword(s):  
Glass Fibre ◽  
Thermoplastic Composites ◽  
Matrix Interface ◽  
Glass Fibre Reinforced ◽  
Hygrothermal Environment ◽  
Fibre Matrix

scholarly journals Exploration of Nano Fillers (Multi Walled Carbon Nano Tubes and Graphene Powders) in the Reinforcement of Epoxy/Glass Fibre Polymers (GFRP)

2019 ◽  
Vol 8 (12) ◽  
pp. 2718-2722
Keyword(s):  
Mechanical Properties ◽  
Glass Fibre ◽  
Experimental Investigations ◽  
Matrix Interface ◽  
Gfrp Composites ◽  
Reinforced Polymers ◽  
The Matrix ◽  
Glass Fibre Reinforced ◽  
Carbon Nano Tubes ◽  
Fibre Matrix

Variations in the mechanical properties of the glass fibre reinforced polymers were seen when exploring nano fillers such as Multi Walled Carbon Nano Tubes (MWCNTs) and graphene powders for reinforcement. GFRP composites when fabricated with increase in percentage weights of MWCNTs and graphene get better interfacial bonding with the matrix. Nano fillers improve the performance of the composites. This paper deals with the examination and experimental investigations carried out for the prediction of the enhancement of mechanical properties on GFRP reinforced with MWCNTs and graphene powders. GFRP composites were fabricated with variations in the amount of nano fillers in percentage weights of 2%, 4%, 6%, 8% and 10% wt. MWCNTs and graphene powders. The method used for reinforcement of resin with nano fillers was ultrasonication method meant for avoiding voids. A tendency for the mechanical properties to deteriorate was observed when nano fillers added were beyond certain weights of MWCNTs and graphene powders. This could be due to the agglomeration of nano fillers that change the fibre/matrix interface. Graphene nano fillers opts to be better compared to MWCNTs since the fabricated graphene reinforced glass fibre specimens have a better performance than GFRP specimens reinforced with MWCNTs.

scholarly journals Influence of Maleic-Anhydride Polypropylene on Transverse Cracking in Glass Fibre-Reinforced Polypropylene Cross-Ply Laminates

1994 ◽  
Vol 3 (5) ◽  
pp. 096369359400300 ◽  
Author(s):  
M.J.A. van den Oever ◽  
T. Peijs
Keyword(s):  
Maleic Anhydride ◽  
Glass Fibre ◽  
Saturation Level ◽  
Shear Lag ◽  
Transverse Cracks ◽  
Damage State ◽  
Transverse Cracking ◽  
Glass Fibre Reinforced ◽  
Polypropylene Matrix ◽  
Fibre Matrix

This study investigates the influence of improved adhesion, resulting from maleicanhydride modification of the polypropylene matrix, on transverse cracking in 0/906/0 glass fibre-reinforced polypropylene laminates. It was shown that the characteristic damage state in cross-ply polypropylene/glass laminates, i.e. the saturation level of transverse cracks, is independent of fibre-matrix adhesion and corresponds very well with a predicted value using a shear-lag analysis.

scholarly journals Effect of μPlasma Modification on the Wettability and the Ageing Behaviour of Glass Fibre Reinforced Polyamide 6 (GFPA6)

Materials ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 7721
Author(s):  
Chang Che ◽  
Behnam Dashtbozorg ◽  
Xiaoying Li ◽  
Hanshan Dong ◽  
Mike Jenkins
Keyword(s):  
Contact Angle ◽  
Glass Fibre ◽  
Liquid Droplet ◽  
Polyamide 6 ◽  
Thermoplastic Composites ◽  
Adhesion Properties ◽  
Glass Fibre Reinforced ◽  
Low Humidity ◽  
Hydrophobic Recovery ◽  
Rate Of Ageing

Glass fibre reinforced polyamide 6 (GFPA6) thermoplastic composites (TPCs) are promising materials with excellent properties, but due to their low surface free energy they are usually difficult to wet, and therefore, possesses poor adhesion properties. μPlasma modification offers potential solutions to this problem through functionalisation of the GFPA6 surface. In this study, the effect of μPlasma on the wetting behaviour of GFPA6 surfaces was investigated. Following single μPlasma treatment scans of GFPA6 samples, a substantial enhancement in wettability was observed. However, the effect of the μPlasma modification was subject to an ageing (hydrophobic recovery) phenomenon, although the enhancement was still partially maintained after 4 weeks. The ageing process was slower when the GFPA6 material was pre-dried and stored in low humidity conditions, thereby demonstrating the importance of the storage environment to the rate of ageing. Orientation of the fibres to the observed contact angle was found to be crucial for obtaining reproducible measurements with lower deviation. The influence of testing liquid, droplet volume and surface texture on the repeatability of the measured contact angle were also investigated.

The effect of fibre length and matrix modification on the fire performance of thermoplastic composites: The behaviour of PP as an example of non-charring matrix

2020 ◽  
pp. 089270572092513
Author(s):  
Yousof Ghazzawi ◽  
Andres F Osorio ◽  
Darren Martin ◽  
Asanka P Basnayake ◽  
Michael T Heitzmann
Keyword(s):  
Glass Fibre ◽  
Fibre Composite ◽  
Fibre Length ◽  
Thermoplastic Composites ◽  
Fibre Reinforcement ◽  
Fire Performance ◽  
Cone Calorimetry ◽  
Continuous Glass ◽  
Time To Ignition ◽  
Glass Fibre Reinforced

The fire performance of fibre-reinforced polypropylene (PP) was investigated with respect to fibre length and modification of the matrix. Fibre lengths of 3 mm, 12 mm, and continuous fibres were used as reinforcements. E-glass continuous fabrics were melt impregnated with PP and consolidated via compression moulding. E-glass fibre-reinforced PP pellets of 3 and 12 mm were compression moulded. Cone calorimetry tests with incident radiant fluxes of 20, 30 and 35 kW m−2 were used to investigate the fire properties of PP glass fibre composites. Results showed that continuous glass fibre reinforced PP exhibits the best fire performance at 20 kW m−2, while 3-mm fibre has the best performance at 35 kW m−2; 12-mm fibre-reinforced PP exhibitedthe lowest performance in comparison with 3-mm and continuous glass fibre reinforcement. Melic-anhydride (MA)-modified PP was found to increase the heat release rate (HRR) by up to 44% and time to ignition by up to 10% depending on the heat flux applied in comparison with unmodified PP. The glass fibre-reinforced composite made with MA-modified PP has 5–12% lower mean HRR and similar time to ignition in comparison with glass fibre composite made by unmodified PP. This suggests improved fibre adhesion plays a role of the fire performance of glass fibre-reinforced PP.

Influence of fibre on the cutting stress state in machining idealized glass fibre composite

1997 ◽  
Vol 32 (1) ◽  
pp. 19-27 ◽  
Author(s):  
C W Wern ◽  
M Ramulu
Keyword(s):  
Glass Fibre ◽  
Fibre Composite ◽  
Orthogonal Cutting ◽  
Surface Damage ◽  
Matrix Interface ◽  
Machined Surface ◽  
Reinforced Plastic ◽  
Glass Fibre Reinforced Plastic ◽  
Glass Fibre Reinforced ◽  
Glass Fibre Composite

The machining of an idealized glass fibre reinforced plastic (GFRP) was examined using photo-elasticity, dynamometry and optical microscopy. Cutting stresses at the glass roving and roving-matrix interface were evaluated using experimental and numerical methods. Experimentally observed isochromatics and measured forces in the orthogonal cutting of GFRP were shown to be affected by the reinforcement and its orientation. Machining stresses and machined surface damage were found to be highest when machining materials with roving oriented 45° towards the cutting edge.

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