Effect of graphene nanoparticles on suspension viscosity and mechanical properties of epoxy-based nanocomposites

Parente, J.M.; Simões, R.; Reis, P.N.B.

doi:10.1016/j.prostr.2022.02.014

Cited by 14 publications

(7 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…% leads to a slight increase in dynamic viscosity. The introduction of graphene nanostructures often leads to a greater increase in dynamic viscosity at such concentrations, as was shown in [ 26 , 27 ]. Therefore, a study was made of the dispersion of FLG particles in a photopolymer resin before and after ultrasonic sonication at 50 °C.…”

Section: Resultsmentioning

confidence: 88%

The Effect of Few-Layer Graphene on the Complex of Hardness, Strength, and Thermo Physical Properties of Polymer Composite Materials Produced by Digital Light Processing (DLP) 3D Printing

et al. 2023

View full text Add to dashboard Cite

The results of studying the effect of particles of few-layer graphene (FLG) synthesized by self-propagating high-temperature synthesis (SHS) on the complex of strength and thermo physical properties of polymer composite products obtained by digital light processing (DLP) 3D printing are presented. It was discovered to achieve an increase in thermophysical and strength parameters of polymers modified by FLG compared with samples made on the unmodified base resin. This result was achieved due to low defectiveness, namely the absence of Stone–Wales defects in the structure of FLG due to the homogeneous distribution of FLG over the volume of the polymer in the form of highly dispersed aggregates. It was possible to increase hardness by 120%, bending strength by 102%, Charpy impact strength by 205%, and thermal conductivity at 25 °C by 572% at concentrations of few-layer graphene of no more than 2 wt. %.

show abstract

Section: Resultsmentioning

confidence: 88%

The Effect of Few-Layer Graphene on the Complex of Hardness, Strength, and Thermo Physical Properties of Polymer Composite Materials Produced by Digital Light Processing (DLP) 3D Printing

et al. 2023

View full text Add to dashboard Cite

show abstract

“…One of these reasons is the increased viscosity of the resin when the graphene particles were added. 52…”

Section: Resultsmentioning

confidence: 99%

“…One of these reasons is the increased viscosity of the resin when the graphene particles were added. 52 Figure 12 presents the SEM images of the produced composites in this work. The fracture surface of neat epoxy, illustrated in Figures 12(a) and (b), shows a cleavage failure associated with signs of stretching, which is a typical feature of the epoxy matrix.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Tribological and mechanical performances of newly developed eco-epoxy composites incorporating flax fibres and graphene nanoplatelets

Awwad

Yousif

Mostafa

et al. 2022

Journal of Reinforced Plastics and Composites

View full text Add to dashboard Cite

The inclusion of both fibre and solid lubricants into polymers may provide a potential solution to maximise their tribological and mechanical performances. This study investigates the effect of incorporating flax fibres and graphene nanoplatelets (GNPs) reinformcements in epoxy matrix composites on their tensile, microhardness and adhesive wear behaviour. Dry adhesive wear experiments were conducted using a block-on-ring (BOR) test rig against a stainless steel ring. Adhesive wear performance was evaluated considering the effect of the volume fraction ( V f) of flax fibre (0, 15, 20 and 25 V f .%) and different weight fractions of GNPs (1.5 and 3 wt.%). Different applied loads in the 15–60 N range, covering the mild and severe wear regions, were used. The worn surfaces were examined using a scanning electron microscope (SEM). The results revealed that flax fibre potently improved the stiffness and tensile strength of epoxy. Increase in V f of flax fibre showed a positive tendency to improve the wear resistance of epoxy; however, with an insignificant change in the coefficient of friction (COF). More interestingly, heat distortion temperature (HDT) was found to be the main key parameter controlling the wear behaviours of the composites. SEM observations indicated that severe wear signs – including detachment, fragmentation and fibre debonding – were noted when the interface temperature reached the heat distortion temperature of the epoxy. On the other hand, the inclusion of GNPs reduced the interface temperature during sliding as well as the COF of the flax/epoxy composite. Ultimately, incorporation of flax fibres and GNPs enhanced both mechanical and tribological performances of the eco-composites.

show abstract

“…% leads to a slight increase in dynamic viscosity. The introduction of graphene nanostructures often leads to a greater increase in dynamic viscosity at such concentrations, as was shown in [20,21]. Therefore, a study was made of the dispersion of FLG particles in a photopolymer resin before and after ultrasonic treatment at 50 °C.…”

Section: Resultsmentioning

confidence: 99%

The Effect of Few-layer Graphene on the Complex of Hardness, Strength and Thermo Physical Properties of Polymer Composite Materials Produced by DLP 3D Printing

Кидалов¹,

Voznyakovskii²,

Vozniakovskii³

et al. 2022

Preprint

View full text Add to dashboard Cite

The results of studying the effect of particles of few-layer graphene (FLG) synthesized by self-propagating high-temperature synthesis (SHS) on the complex of strength and thermo physical properties of polymer composite products obtained by DLP 3D printing are presented. It has been discovered to achieve an increase in thermo physical and strength parameters of polymers modified by FLG compared with samples made on the unmodified base resin. This result was achieved due to low defectiveness, namely the absence of Stone-Wales defects in the structure of FLG due to the homogeneous distribution of FLG over the volume of the polymer in the form of highly dispersed aggregates. It was possible to increase hardness by 120 %, bending strength by 102 %, Charpy impact strength by 205 %, and thermal conductivity at 25 °C by 572 % at concentrations of few-layer graphene of no more than 2 wt. %.

show abstract

Effect of graphene nanoparticles on suspension viscosity and mechanical properties of epoxy-based nanocomposites

Cited by 14 publications

References 9 publications

The Effect of Few-Layer Graphene on the Complex of Hardness, Strength, and Thermo Physical Properties of Polymer Composite Materials Produced by Digital Light Processing (DLP) 3D Printing

The Effect of Few-Layer Graphene on the Complex of Hardness, Strength, and Thermo Physical Properties of Polymer Composite Materials Produced by Digital Light Processing (DLP) 3D Printing

Tribological and mechanical performances of newly developed eco-epoxy composites incorporating flax fibres and graphene nanoplatelets

The Effect of Few-layer Graphene on the Complex of Hardness, Strength and Thermo Physical Properties of Polymer Composite Materials Produced by DLP 3D Printing

Contact Info

Product

Resources

About