scholarly journals Properties of Graphene Oxide/Epoxy Resin Composites

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Jijun Tang ◽  
Haijun Zhou ◽  
Yunxia Liang ◽  
Xinlan Shi ◽  
Xin Yang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Epoxy Resin ◽  
Raw Materials ◽  
Damping Capacity ◽  
Resin Composites ◽  
Damping Properties ◽  
Natural Graphite ◽  
Epoxy Resin Composites ◽  
The Impact ◽  
Properties Of Composites

The graphene oxide (GO) was obtained by pressurized oxidation method using natural graphite as raw materials. Then the GO/epoxy resin composites were prepared by casting. The mechanical and damping properties of composites were studied. As a result, the impact intensity of GO/epoxy resin composites was prominently improved with the content of the graphene oxide increasing. The glass transition temperature decreased and the damping capacity is improved.

Preparation and Properties of Tea Polyphenol Modified Graphene Oxide/Epoxy Resin Composites

2019 ◽  
Vol 814 ◽  
pp. 3-11
Author(s):  
Xiang Yu Ren ◽  
Hui Chen ◽  
Jing Wu ◽  
Hong Bo Liu
Keyword(s):  
Graphene Oxide ◽  
Epoxy Resin ◽  
Thermo Gravimetric Analysis ◽  
Testing Machine ◽  
Gravimetric Analysis ◽  
Resin Composites ◽  
X Ray ◽  
Modified Graphene Oxide ◽  
Epoxy Resin Composites ◽  
Modified Graphene

Microcrystalline graphite (MG) was used as raw material and oxidated by Hummers method. And further the graphene oxide (GO) was obtained by ultrasonic stripping. The TP modified graphene (TPG) was prepared by the surface grafting of pure natural green tea extract tea polyphenols (TP) on the surface of GO. Finally, the TPG/epoxy resin composite was prepared by solution blending and heat-curing moulding method.The characterization of structure and properties of TPG was analyzed by X ray diffraction pattern (XRD), infrared spectroscopy (FT-IR), thermo gravimetric analysis (TGA) and X ray photoelectron spectroscopy (XPS). A universal material testing machine was used to test the mechanical properties of epoxy resin composites with different addition of TPG. Field emission scanning electron microscopy (SEM) was used to observe the tensile-sectional morphology of the composites. The thermal stability of the composites was investigated by thermogravimetry and thermal dilatometer. The experimental results showed that the TP molecule was successfully grafted on the oxygen-containing functional groups of the GO surface through the phenolic hydroxyl group.When the addition of TPG was 1.0 wt%, the decomposition temperature of the epoxy resin was increased by 22.2 °C,and the surface resistivity decreased from 1.35×1014 Ω·m to 1.7×109 Ω·m. When the added amount of TPG was 0.5 wt%, the tensile strength of composites was increased by 13.5% reaching 59.85 MPa.

Thermomechanical Properties and Morphology of Liquid Crystalline Polyurethane/Epoxy Resin Composites

2011 ◽  
Vol 194-196 ◽  
pp. 1421-1425 ◽  
Author(s):  
Jian Feng Ban ◽  
Shao Rong Lu ◽  
Dong Guo ◽  
Kuo Liu ◽  
Chong Xi Luo
Keyword(s):  
Epoxy Resin ◽  
Liquid Crystalline ◽  
Decomposition Temperature ◽  
Thermomechanical Properties ◽  
Resin Composites ◽  
Flexible Chain ◽  
Polyurethane Elastomers ◽  
Fracture Feature ◽  
Epoxy Resin Composites ◽  
The Impact

One new kind of epoxy resin toughening agent defined as liquid crystalline polyurethane elastomers (LCPUE) containing mesogenic ester groups and trithylene glycol flexible chain was synthesized and its nematic structure was observed by POM and XRD. The LCPUE was to modify the epoxy resin (E-51). The mechanical properties, fracture surface morphology, and thermal properties of the E-51/LCPUE curing system were systematically investigated. Experimental results revealed that the impact strength of the epoxy resin modified with LCPU is 1.9 times higher than that of the unmodified system, enhanced the thermal decomposition temperature by about 12 °C, and the fracture surfaces all modified systems display tough fracture feature.

Shape and size effects of ceria nanoparticles on the impact strength of ceria/epoxy resin composites

Particuology ◽  
2011 ◽  
Vol 9 (1) ◽  
pp. 80-85 ◽  
Author(s):  
Xiaoqiang He ◽  
Dengsong Zhang ◽  
Hongrui Li ◽  
Jianhui Fang ◽  
Liyi Shi
Keyword(s):  
Impact Strength ◽  
Epoxy Resin ◽  
Size Effects ◽  
Resin Composites ◽  
Ceria Nanoparticles ◽  
Epoxy Resin Composites ◽  
The Impact ◽  
Shape And Size

Preparation and Mechanical Properties of Lignin/Epoxy Resin Composites

2012 ◽  
Vol 482-484 ◽  
pp. 1959-1962 ◽  
Author(s):  
Quan Fu Yin ◽  
Ming Wei Di
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Epoxy Resin ◽  
Bending Strength ◽  
Resin Composites ◽  
Ftir Analysis ◽  
Opposite Trend ◽  
Bonding Effect ◽  
Epoxy Resin Composites ◽  
The Impact

Lignin/epoxy resin composites were prepared by blending lignin with epoxy resin cured by polyamide. The effect of the content of lignin and polyamide on the mechanical properties of the lignin/epoxy resin composites was studied systemically. And the structure for the blend of lignin and epoxy resin without the curing agent was characterized by Fourier transform infrared spectroscopy (FTIR). The results of mechanical properties test showed that the bending strength of the composites decreases gradually with increasing the content of lignin, while the impact strength increased firstly and then decreased. The bending strength of lignin/epoxy resin composites showed a trend of increasing firstly and then decreasing with the increase of the content of polyamide, while the impact strength exhibited an opposite trend. The density for the composites increased with the addition of lignin, and polyamide exhibited an inconspicuous effect on density of the composites. The FTIR analysis results showed that the epoxy resin could be cured by lignin without polyamide, which concluded that the lignin could catalyze the cross-linking of epoxy resin or react with epoxy resin, and this bonding effect would beneficial to the properties of lignin/epoxy resin composites.

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