Effect of water absorption on the mechanical properties of nano-filler reinforced epoxy nanocomposites

Alamri, Hatem R.; Low, It Meng

doi:10.1016/j.matdes.2012.05.060

Cited by 246 publications

(178 citation statements)

References 36 publications

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“…This measurement frequently used roughness amplitude parameter as it measures the roughness of samples surfaces [36]. The minimum increase of coarseness is an evident of crack deflection mechanism, which increase absorbed energy of fracture by increasing the crack length during deformation [10]. Microscale surface roughness likely produces enhanced mechanical interlocking with the polymer chains and better adhesion [50].…”

Section: Resultsmentioning

confidence: 99%

“…The degree of liquid absorption and polymer degradation can be reduced by using nano-fillers such as nanoclay. Alamri and Low in their research reported that halloysite nanoclays were able to reduce water absorption and increase the mechanical properties of epoxy through uniform dispersion [10] [11].…”

Section: Introductionmentioning

confidence: 99%

“…For thermoplastic based polymers, the cracking agent does not cause a chemical degradation of the polymer, instead penetrates slowly into the polymer matrices under tension and causes hydrostatic pressure which speed up the cracking propagation and produces catastrophic failure of plastic components [20] This study is aimed to improve knowledge of the environmental stress cracking resistance of halloysite nanoclay-polyester nanocomposites exposed to aggressive environment. Various research publications have discussed the engineering properties of polymer nano-composites exposed to water [10] [27].…”

Section: Introductionmentioning

confidence: 99%

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Environmental Stress Cracking Resistance of Halloysite Nanoclay-Polyester Nanocomposites

Saharudin¹,

Wei²,

Shyha³

2017

WJET

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The environmental stress cracking resistance of halloysite nanoclay-polyester nanocomposites was investigated using fracture mechanics approach. The incorporation of halloysite nanoclay was found to improve the environmental stress cracking resistance of the nano-composites. The storage modulus of nano-composites measured by dynamic mechanical analysis increased remarkably as a function of halloysite nanoclay content. At 0.7 wt% nanoclay, the T g improved from 72˚C to 76˚C. The fracture toughness increased up to 33% and time to failure improved 155% with the addition of 0.7 wt% of halloysite nanoclay. The maximum microhardness was found 119% higher for the same nano-filler concentration compared to monolithic polyester. The reinforcement with 1 wt% showed lower fracture toughness due to agglomerations of nanoclay which act as flaws. The presence of agglomerates weakened the bond between nano-particles and matrix hence reduces the environmental stress cracking resistance by halloysite nanoclay reinforcement.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Environmental Stress Cracking Resistance of Halloysite Nanoclay-Polyester Nanocomposites

Saharudin¹,

Wei²,

Shyha³

2017

WJET

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“…The compression properties of GRE pipe filled with geopolymer were observed from the optimum loading of geopolymer filler at 30 wt% of the geopolymer filler loading for 4 M white clay geopolymer filler, which contributed to enhancements in the interfacial bonding between the filler and the matrix, thus increasing the surface area of matrix and filler interaction. This leads to a good stress transfer from the matrix to the micro-filler, thus resulting in improved compressive strength [14]. Compressive modulus of stiffness materials in the static bending condition is tabulated in table 3.…”

Section: Compressionmentioning

confidence: 99%

Effect of Glass Reinforced Epoxy (GRE) pipe filled with Geopolymer Materials for Piping Application: Compression Properties

et al. 2016

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Abstract. The aim of this paper is to achieve the highest compressive strength of glass reinforced epoxy pipe with the geopolymer filler content of weight percentage that were used in glass reinforced epoxy pipe. The samples were prepared by using the filament winding method. The effect of weight percentage of geopolymer materials in epoxy hardener was studied under mechanical testing, which is using the compression test. A series of glass reinforced epoxy pipe and glass reinforced epoxy pipe filled with 10 -40 weight percentage geopolymer filler which is white clay were prepared. The compression strength of the glass reinforced epoxy pipe filled geopolymer materials is determined using Instron Universal Testing under compression mode. It was found that compressive strength for samples with white clay geopolymer filler are much higher compare to glass reinforced epoxy pipe without geopolymer filler. Moreover, the compressive strength of glass reinforced epoxy pipe filled with white clay geopolymer filler was increased from 10 wt% to 30 wt% of geopolymer content. However, the compressive strength of glass reinforced epoxy pipe with white clay geopolymer filler suddenly decreased when added to 40 wt%. The results indicated that the blending of geopolymer materials in epoxy system can be obtained in this study.

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“…Alamri and Low studied the effect of water on the mechanical properties of halloysite nanotubes-reinforced epoxy. They observed that the incorporation of halloysite nanotubes was able to reduce water absorption and improve mechanical properties of the nanocomposites after water immersion [19].…”

Section: Introductionmentioning

confidence: 99%

Effect of Short Term Water Exposure on the Mechanical Properties of Halloysite Nanotubes-Multi Layer Graphene Reinforced Polyester Nanocomposites

Saharudin¹,

Atif²

2017

Preprint

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Abstract:The influence of short term water absorption on the mechanical properties of halloysite nanotubes-multi layer graphene reinforced polyester hybrid nanocomposites has been investigated. The addition of nano-fillers significantly increased the flexural strength; tensile strength and impact strength in dry and wet conditions. After short term water exposure; the maximum microhardness; tensile; flexural and impact toughness values were observed at 0.1 wt% MLG. The microhardness increased up to 50.3%; tensile strength increased up to 40% and flexural strength increased up to 44%. Compared to dry samples; the fracture toughness and surface roughness of all types of produced nanocomposites were increased that may be attributed to plasticization effect. Scanning electron microscopy revealed that the main failure mechanism is caused by the weakening of nanofiller-matrix interface induced by water absorption. It was further observed that synergistic effects were not effective at concentration of 0.1 wt% to produce considerable improvement in mechanical properties of produced hybrid nanocomposites.

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Effect of water absorption on the mechanical properties of nano-filler reinforced epoxy nanocomposites

Cited by 246 publications

References 36 publications

Environmental Stress Cracking Resistance of Halloysite Nanoclay-Polyester Nanocomposites

Environmental Stress Cracking Resistance of Halloysite Nanoclay-Polyester Nanocomposites

Effect of Glass Reinforced Epoxy (GRE) pipe filled with Geopolymer Materials for Piping Application: Compression Properties

Effect of Short Term Water Exposure on the Mechanical Properties of Halloysite Nanotubes-Multi Layer Graphene Reinforced Polyester Nanocomposites

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