Reinforcing epoxy resin through covalent integration of functionalized graphene nanosheets

2014 ◽  
Vol 25 (4) ◽  
pp. 418-423 ◽  
Author(s):  
Fengdan Liu ◽  
Kunkun Guo
Keyword(s):  
Epoxy Resin ◽  
Graphene Nanosheets ◽  
Functionalized Graphene

scholarly journals Reinforcement of Epoxy Resin by Additives of Amine-Functionalized Graphene Nanosheets

Coatings ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 35
Author(s):  
Tung-Yuan Yung ◽  
Yu-Chun Lu ◽  
Jeng-Shiung Chen ◽  
Yu-Wei Cheng ◽  
Ting-Yu Liu ◽  
...  
Keyword(s):  
Epoxy Resin ◽  
Functional Group ◽  
Graphene Nanosheets ◽  
Intermolecular Hydrogen Bond ◽  
Impact Resistance ◽  
Curing Agent ◽  
Functionalized Graphene ◽  
Amine Functionalized ◽  
Epoxy Ring Opening ◽  
The Impact

In this study, graphene oxide (GO) nanosheets were modified with an amine functional group to obtain amine-functionalized graphene (AMG) nanosheets and then blended with the aniline curing agent of bisphenol-A (BPA) epoxy resin to crosslink BPA epoxy resin. The AMG-blended curing agent and BPA epoxy resin formed an intermolecular hydrogen bond that was stronger than the π–π stacking force between benzene rings of graphene nanosheets. Therefore, AMG nanosheets exhibited excellent dispersion in the aniline curing agent. The amine group of AMG-blended curing agents and the epoxy functional group of BPA epoxy resin exhibited strong chemical activity and underwent crosslinking and polymerization. AMG nanosheets were mixed with BPA epoxy resin to form a crosslinked structure through the epoxy ring-opening polymerization of the resin. The mechanical properties of the epoxy resin nanocomposites were significantly improved by the added 1 wt.% AMG nanosheets. The tensile strength was enhanced by 98.1% by adding 1 wt.% AMG in epoxy. Furthermore, the impact resistance of the epoxy resin was enhanced by 124.4% after adding 2.67 wt.% of AMG nanosheets. Compared with other reinforced fillers, AMG nanosheets are very light and can therefore be used as nanocomposite materials in coating applications, the automotive industry, aerospace sheet materials, wind power generation, and other fields.

Tribological behavior of dodecylamine functionalized graphene nanosheets dispersed engine oil nanolubricants

2019 ◽  
Vol 131 ◽  
pp. 605-619 ◽  
Author(s):  
Gayatri Paul ◽  
Subhasis Shit ◽  
Harish Hirani ◽  
Tapas Kuila ◽  
N.C. Murmu
Keyword(s):  
Tribological Behavior ◽  
Graphene Nanosheets ◽  
Engine Oil ◽  
Functionalized Graphene

scholarly journals High-Performance Thermal Management Nanocomposites: Silver Functionalized Graphene Nanosheets and Multiwalled Carbon Nanotube

Crystals ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 398 ◽  
Author(s):  
Yongcun Zhou ◽  
Xiao Zhuang ◽  
Feixiang Wu ◽  
Feng Liu
Keyword(s):  
Thermal Conductivity ◽  
Carbon Nanotube ◽  
Polymer Composites ◽  
Thermal Management ◽  
High Performance ◽  
Graphene Nanosheets ◽  
Multiwalled Carbon Nanotube ◽  
Processing Unit ◽  
Functionalized Graphene ◽  
Multiwalled Carbon

Polymer composites with high thermal conductivity have a great potential for applications in modern electronics due to their low cost, easy process, and stable physical and chemical properties. Nevertheless, most polymer composites commonly possess unsatisfactory thermal conductivity, primarily because of the high interfacial thermal resistance between inorganic fillers. Herein, we developed a novel method through silver functionalized graphene nanosheets (GNS) and multiwalled carbon nanotube (MWCNT) composites with excellent thermal properties to meet the requirements of thermal management. The effects of composites on interfacial structure and properties of the composites were identified, and the microstructures and properties of the composites were studied as a function of the volume fraction of fillers. An ultrahigh thermal conductivity of 12.3 W/mK for polymer matrix composites was obtained, which is an approximate enhancement of 69.1 times compared to the polyvinyl alcohol (PVA) matrix. Moreover, these composites showed more competitive thermal conductivities compared to untreated fillers/PVA composites applied to the desktop central processing unit, making these composites a high-performance alternative to be used for thermal management.

Functionalized graphene nanosheets with improved dispersion stability and superior paclitaxel loading capacity

2019 ◽  
Vol 173 ◽  
pp. 421-428 ◽  
Author(s):  
Vrushti Kansara ◽  
Rahul Patil ◽  
Rahul Tripathi ◽  
Prafulla K. Jha ◽  
Pratap Bahadur ◽  
...  
Keyword(s):  
Graphene Nanosheets ◽  
Dispersion Stability ◽  
Loading Capacity ◽  
Functionalized Graphene
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