Characterization of Conductive Nanographite Melamine Composites

Pretschuh, Claudia; Schwarzinger, Clemens; Abdala, Ahmed; Vukusic, Sulafudin

doi:10.4236/ojcm.2014.41007

Cited by 11 publications

(6 citation statements)

References 34 publications

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“…The final results confirmed the improvement in the thermal stability and conductivity of the nanocomposites. In another study, electrical, mechanical, and thermal properties of nanographite/melamine composites were studied. The nanographite (NG) was prepared by thermally treating the graphite oxide and subsequently added into the melamine resin during the resin preparation by in situ process.…”

Section: Thermoset–graphene Nanocompositesmentioning

confidence: 99%

Mechanical and Thermal Properties of Thermoset–Graphene Nanocomposites

Saleem

Edathil

Ncube

et al. 2016

Macro Materials & Eng

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formaldehyde, phenol formaldehyde, silicone, vinyl ester, cyanate ester, unsaturated polyester resin, etc. The properties of thermoset materials can be further improved by reinforcing them with fi llers, most commonly used being clays, carbon nanotubes, and graphene nanoplatelets. GrapheneGraphene is a fundamental building block of all graphitic forms of carbon and consists of a single layer of sp 2 -hybridized carbon atoms arranged in a honeycomb structure. A single defect-free graphene layer has Young's modulus of 1.0 TPa, intrinsic strength 42 N m −1 , thermal conductivity 4840-5300 W (m K) −1 , electron mobility exceeding 25 000 cm 2 V −1 s −1 , excellent gas impermeability and specifi c surface area of 2630 m 2 g −1 . [3][4][5][6][7][8][9][10][11] On incorporation into polymers, the mechanical, thermal, as well as electrical properties of the polymeric materials are significantly improved. [ 3,[12][13][14][15] The geometry differs with size and number of atomic layers, which determines the aspect ratio and the specifi c surface area. Generally speaking, GNSs have higher specifi c surface area than CNTs, thus, having higher potential of property enhancement in Graphene has resulted in signifi cant research effort to generate polymer nanocomposites with improved mechanical, thermal as electrical properties as compared to pure polymers. A large number of studies have been undertaken using different graphene derivatives, fi ller loadings, synthesis methods, and so on to obtain optimum fi ller dispersion as well as fi ller-matrix interactions, which are crucial for achieving signifi cant enhancement in the properties, especially at low fi ller fraction. This review summarizes the mechanical and thermal properties of numerous studies carried out for the property enhancements of commercially relevant thermosetting materials such as epoxy, polyurethane, natural rubber, melamine formaldehyde, phenol formaldehyde, silicones, vinyl ester, cyanate ester, and unsaturated polyester resin.

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Section: Thermoset–graphene Nanocompositesmentioning

confidence: 99%

Mechanical and Thermal Properties of Thermoset–Graphene Nanocomposites

Saleem

Edathil

Ncube

et al. 2016

Macro Materials & Eng

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“…An important way to address this need is to use a suitable dopant material such as metals, alloys, nanoparticles. Especially, graphene (Gr) and nano-graphite (NG) a cost-efficient and environmentally friendly materials to produce highly conductive carbon nanoparticles [30][31][32].…”

Section: Introductionmentioning

confidence: 99%

A comparison of Au/n-Si Schottky diodes (SDs) with/without a nanographite (NG) interfacial layer by considering interlayer, surface states (N_ss) and series resistance (R_s) effects

et al. 2022

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In this paper, an organic interlayer, Rs, and Nss on the transport- mechanisms (TMs), both the Au/n-Si (MS) and Au/(Nanographite-PVP/n-Si (MPS) (SDs) were performed onto the same Si-wafer in same-conditions. Some electrical parameters of them have been investigated. The interface-traps/states (D it/N ss) were extracted from the IF-VF data as function of energy (Ec-Ess). These results show that the N ss for MPS is much-lower than MS SD and increase from the midgap-energy towards the E c like U-shape. Double-logarithmic IF-VF graphs of them show three linear-regimes for low, intermediate, and high-voltages and in these regimes, TM are governed by ohmic, trap/space charge limited currents (TCLCs/SCLCs), respectively. All these results show that (NG:PVP) interlayer leads to an increase in rectifier-ratio (RR=IF/IR ), BH, R sh, and decrease in N ss, reverse saturation-current (I o), and n. Thus, (NG:PVP) can be successfully utilized as interfacial layer with high performance characteristics.

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“…Natural graphite is a three‐dimensional form of carbon where the atoms are arranged in layers having weak van der Waals bonds between each other . This structure increases the interplanar spacing from 0.335 to 0.789 nm and makes graphite able to convert from layered platelets to individual delaminated sheets, or so‐called graphene sheets, characterized by superior electrical conductivity and high thermal stability compared to natural graphite .…”

Section: Introductionmentioning

confidence: 99%

Influence of graphene oxide and graphene nanosheet on the properties of polyvinylidene fluoride nanocomposites

et al. 2017

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In this study, graphene oxide (GO) and graphene nanosheets (GN) were prepared using natural graphite as a reinforcing agent, and different filler contents (1, 2, 3, and 4 wt%) were used to produce nanocomposites based on polyvinylidene fluoride (PVDF). In particular, a meltblending method was used as a 10 wt% masterbatch was prepared and then diluted to get the final samples via compression molding. A complete characterization in terms of X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM) confirmed that GO and GN were of high structural quality. Then, the nanocomposites were characterized in terms of thermal, rheological, electrical, and mechanical performances. The thermal stability of neat PVDF (4008C) was found to increase with both fillers addition reaching at 3 wt% 445 and 4638C for GO and GN, respectively. For the same concentration, the PVDF Young's modulus was found to increase by 32% for GN, while only a 7% gain was observed for GO. Similarly, the rheological and electrical resistivity results showed that GN was more effective than GO in improving the performances of these nanocomposites, with an optimum $3 wt% for the conditions tested. POLYM. COMPOS., 00:000-000,

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Characterization of Conductive Nanographite Melamine Composites

Cited by 11 publications

References 34 publications

Mechanical and Thermal Properties of Thermoset–Graphene Nanocomposites

Mechanical and Thermal Properties of Thermoset–Graphene Nanocomposites

A comparison of Au/n-Si Schottky diodes (SDs) with/without a nanographite (NG) interfacial layer by considering interlayer, surface states (N_ss) and series resistance (R_s) effects

Influence of graphene oxide and graphene nanosheet on the properties of polyvinylidene fluoride nanocomposites

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Characterization of Conductive Nanographite Melamine Composites

Cited by 11 publications

References 34 publications

Mechanical and Thermal Properties of Thermoset–Graphene Nanocomposites

Mechanical and Thermal Properties of Thermoset–Graphene Nanocomposites

A comparison of Au/n-Si Schottky diodes (SDs) with/without a nanographite (NG) interfacial layer by considering interlayer, surface states (Nss) and series resistance (Rs) effects

Influence of graphene oxide and graphene nanosheet on the properties of polyvinylidene fluoride nanocomposites

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A comparison of Au/n-Si Schottky diodes (SDs) with/without a nanographite (NG) interfacial layer by considering interlayer, surface states (N_ss) and series resistance (R_s) effects