Improvement of modulus, strength and fracture toughness of CNT/Epoxy nanocomposites through the functionalization of carbon nanotubes

Cha, Jihoon; Jun, Gwang Hoon; Park, Jong Kyoo; Kim, Jung Cheol; Ryu, Ho Jin; Hong, Soon Hyung

doi:10.1016/j.compositesb.2017.07.070

Cited by 215 publications

(101 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the case of noncovalent functionalization for CNTs via π – π interaction, the efficiency of load transfer is always limited when using functional molecules that have weak bonding to the polymer matrix . Previous studies have put forward the view that CNTs could be pulled out from the matrix if the CNTs do not combine with the matrix, which would negatively influence the mechanical properties of thermosets. By comparison, BPHNV could form a polymer layer wrapping on the surface of CNTs, where abundant functional groups exist and covalent bonds with the matrix would be further generated.…”

Section: Resultsmentioning

confidence: 99%

Noncovalent functionalization of carbon nanotubes using branched random copolymer for improvement of thermal conductivity and mechanical properties of epoxy thermosets

Tang

Zhao

Fei³

et al. 2018

Polymer International

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 99%

Noncovalent functionalization of carbon nanotubes using branched random copolymer for improvement of thermal conductivity and mechanical properties of epoxy thermosets

Tang

Zhao

Fei³

et al. 2018

Polymer International

View full text Add to dashboard Cite

show abstract

“…CNTs are characterized by a high aspect ratio, excellent mechanical properties, remarkable thermal and electrical conductivities, low density and good corrosion resistance against oxidative environments . Although these properties depend on the synthetic method used (chemical vapour deposition, laser ablation, arch discharge, etc.)…”

Section: Introductionmentioning

confidence: 99%

Study of the synergistic effect of boron nitride and carbon nanotubes in the improvement of thermal conductivity of epoxy composites

Isarn

Bonnaud

Massagués

et al. 2019

Polymer International

View full text Add to dashboard Cite

The enhancement of the thermal conductivity, keeping the electrical insulation, of epoxy thermosets through the addition of pristine and oxidized carbon nanotubes (CNTs) and microplatelets of boron nitride (BN) was studied. Two different epoxy resins were selected: a cycloaliphatic (ECC) epoxy resin and a glycidylic (DGEBA) epoxy resin. The characteristics of the composites prepared were evaluated and compared in terms of thermal, thermomechanical, rheological and electrical properties. Two different dispersion methods were used in the addition of pristine and oxidized CNTs depending on the type of epoxy resin used. Slight changes in the kinetics of the curing reaction were observed in the presence of the fillers. The addition of pristine CNTs led to a greater enhancement of the mechanical properties of the ECC composite whereas the oxidized CNTs presented a greater effect in the DGEBA matrix. The addition of CNTs alone led to a marked decrease of the electrical resistivity of the composites. Nevertheless, in the presence of BN, which is an electrically insulating material, it was possible to increase the proportion of pristine CNTs to 0.25 wt% in the formulation without deterioration of the electrical resistivity. A small but significant synergic effect was determined when both fillers were added together. Improvements of about 750% and 400% in thermal conductivity were obtained in comparison to the neat epoxy matrix for the ECC and DGEBA composites, respectively. © 2019 Society of Chemical Industry

show abstract

“…It is known that the dispersion of CNTs in an epoxy matrix and interfacial interaction between CNTs and the epoxy matrix are the key influence factor to control the load transfer and determine the performance of the cured nanocomposites . Among the reported work, incorporating amino‐functionalized multiwall carbon nanotubes (MWCNT‐NH 2 ) into the epoxy resin systems has been studied by numerous researchers . Ma et al and our previous studies found that the amine groups on the surface of the MWCNT‐NH 2 can react with epoxy groups to improve dispersion and induce strong MWCNT‐epoxy interfacial interactions.…”

Section: Introductionmentioning

confidence: 99%

Effect of amine functionalized MWCNT‐epoxy interfacial interaction on MWCNT dispersion and mechanical properties of epoxy‐amine composites

et al. 2018

View full text Add to dashboard Cite

The incorporation of functionalized nano‐fillers into epoxy‐based composites shows a potential to improve material performances, which based on the modification mechanism is well understood. In this study, amine functionalized multiwall carbon nanotube (MWCNT‐NH2) as an example was prepared and selected as a type of functionalized nano‐fillers to modify two kinds of tri‐functionality epoxy resins, i.e. diglycidyl‐4, 5‐epoxycyclohexane‐1, 2‐dicarboxylate (DGEAC) and n, n‐diglycidyl‐4‐glycidy‐loxyaniline (TGPAP). The interfacial interaction of MWCNT‐NH2 with DGEAC or TGPAP was investigated by using molecular dynamics (MDs) simulations. Further investigation on how the interfacial interactions affected the dispersion of MWCNT‐NH2 in each epoxy resin was conducted and their effects on the mechanical properties of the resulting nanocomposites were characterized. The MD simulation results indicated that a higher interfacial strength between MWCNT‐NH2 and TGPAP molecule was formed, no matter with non‐covalent or covalent interaction, due to the presence of benzene ring and nitrogen atom in the backbone of TGPAP molecule. Moreover, the experimental results showed that the stronger binding strength of MWCNT‐NH2 with TGPAP can bring more positive effect on the dispersion of MWCNT‐NH2 in the TGPAP‐based resin matrix, and then resulting in the considerable improved tensile toughness compared with the neat sample and MWCNT‐NH2 reinforced DGEAC‐based ones. POLYM. COMPOS., 39:E2552–E2561, 2018. © 2018 Society of Plastics Engineers

show abstract

Improvement of modulus, strength and fracture toughness of CNT/Epoxy nanocomposites through the functionalization of carbon nanotubes

Cited by 215 publications

References 49 publications

Noncovalent functionalization of carbon nanotubes using branched random copolymer for improvement of thermal conductivity and mechanical properties of epoxy thermosets

Noncovalent functionalization of carbon nanotubes using branched random copolymer for improvement of thermal conductivity and mechanical properties of epoxy thermosets

Study of the synergistic effect of boron nitride and carbon nanotubes in the improvement of thermal conductivity of epoxy composites

Effect of amine functionalized MWCNT‐epoxy interfacial interaction on MWCNT dispersion and mechanical properties of epoxy‐amine composites

Contact Info

Product

Resources

About