Electrical Conducting Properties of Unsaturated Polyester/Graphite Nanosheet Composite under Electric Field

2012 ◽  
Vol 455-456 ◽  
pp. 520-523
Author(s):  
Hong Yan Zhang ◽  
Hai Quan Wang ◽  
Lin Tong Wang ◽  
Yi Min Feng
Keyword(s):  
Electric Field ◽  
Polyester Resin ◽  
In Situ Polymerization ◽  
Unsaturated Polyester ◽  
Graphite Nanosheets ◽  
Ac Electric Field ◽  
Graphite Nanosheet ◽  
Electrical Conducting ◽  
Scanning Electron

Unsaturated polyester resin/Graphite nanosheet composites were prepared using in situ polymerization under AC electric field which was applied during composite curing to induce orientation of graphite nanosheets. Scanning electron microscopy (SEM) has been applied to demonstrate the orientation of graphite nanosheets As a result, the percolation threshold was decreased to 0.25 wt% due to the orientation of the graphite nanosheets.

Structure Characterization of Unsaturated Polyester/Graphite Nanosheet Composite under Electric Field

2012 ◽  
Vol 455-456 ◽  
pp. 524-527
Author(s):  
Hong Yan Zhang ◽  
Hai Quan Wang ◽  
Su Qing Wang
Keyword(s):  
Electric Field ◽  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Unsaturated Polyester Resin ◽  
Structure Characterization ◽  
X Ray Diffraction ◽  
Graphite Nanosheets ◽  
Conductive Composites ◽  
Ac Electric Field ◽  
Graphite Nanosheet

As conductive fillers, graphite nanosheets can be induced by the AC electric field in unsaturated polyester resin and then prepared oriented unsaturated polyester resin/graphite nanosheets composite. we investigate the preparation、configuration and capability of the unsaturated resin/graphite nanosheets conductive composites and the oriented theory of the graphite nanosheets induced in the electric field. The measures and observation of scanning electron microscopy (SEM), X-ray diffraction (XRD), electric current have shown that the graphite nanosheets are oriented by electric field which were randomly dispersed in the polymer matrix at the beginning, and then oriented with their flakes along the electric field in the polyester resin.

Preparation and Characterization of Unsaturated Polyester/Graphite Nanosheets Composites under Electric Field

2012 ◽  
Vol 182-183 ◽  
pp. 33-36 ◽  
Author(s):  
Hong Yan Zhang ◽  
Xi Shi Tai ◽  
Hai Quan Wang
Keyword(s):  
Electric Field ◽  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Unsaturated Polyester Resin ◽  
X Ray Diffraction ◽  
Graphite Nanosheets ◽  
Conductive Composites ◽  
Ac Electric Field ◽  
Conductive Fillers

As a conductive fillers, graphite nanosheets can be induced by the AC electric field in unsaturated polyester resin and then prepared oriented unsaturated polyester resin/graphite nanosheets composite. We investigate the preparation, configuration and capability of the unsaturated resin/ graphite nanosheets conductive composites and the oriented theory of the graphite nanosheets induced in the electric field. The measures and observation of scanning electron microscopy(SEM), X-ray diffraction(XRD), electric current have shown that the graphite nanosheets are oriented by electric field which were randomly dispersed in the polymer matrix at the beginning, and then oriented with their flakes along the electric field in the polyester resin.

Friction and Rheological Properties of Meso-Porous MCM-41/Unsaturated Polyester In Situ Composites

2014 ◽  
Vol 599-601 ◽  
pp. 18-21
Author(s):  
Shu Long Hu ◽  
Jian Lv ◽  
Feng Ying Lu ◽  
Hua Shan Liu ◽  
De Ming Zeng
Keyword(s):  
Wear Resistance ◽  
Rheological Properties ◽  
Cetyltrimethylammonium Bromide ◽  
Room Temperature ◽  
Polyester Resin ◽  
In Situ Polymerization ◽  
Unsaturated Polyester ◽  
Roller Milling ◽  
Mcm 41

In this paper, meso-porous MCM-41 was synthesized at room temperature using cationic surfactant cetyltrimethylammonium bromide (CTAB) as the template agent. Then MCM-41/unsatura-ted polyester resin (UPR) materials were prepared by in-situ polymerization with the meso-porous MCM-41. MCM-41/UPR in-situ composites were prepared by roller milling and molding processes. Effects of meso-porous MCM-41 on rheological properties and wear resistance of the MCM-41/UPR composites have been investigated. It is shown that MCM-41 has a diameter in range of 4-5 nm and the pores are highly ordered. MCM-41 can improve the rheological properties and wear resistance of the composites. When MCM-41 content is 2%, the mass abrasion loss is decreased by 37.4%.

Structure Characterization of Polymer/Oriented Graphite Nanosheet Composite by Electric Field-Inducement

2012 ◽  
Vol 455-456 ◽  
pp. 528-532 ◽  
Author(s):  
Hong Yan Zhang ◽  
Hai Quan Wang
Keyword(s):  
Electric Field ◽  
Composite Film ◽  
Unsaturated Polyester ◽  
Expanded Graphite ◽  
Structure Characterization ◽  
Light Transmittance ◽  
Graphite Nanosheets ◽  
Graphite Nanosheet ◽  
Dc Electric Field ◽  
Oriented Parallel

Graphite nanosheets (GNs) prepared by sonicating expanded graphite were homogeneously dispersed in unsaturated polyester resin using sonication. The dispersion with a curing agent was then subjected to a dc electric field, followed by crosslinking, to fabricate a polymer/GN composite film. Scanning electron microscopy revealed that the GNs in the film were oriented parallel to the electric field. UV-VIS measurements indicated that the optical properties of the field-induced composite film showed significant improvement in visible light transmittance compared with those prepared without the electric field.

Preparation and Thermal Properties of Novolac Resin/Graphite Nanosheet Composites

2011 ◽  
Vol 391-392 ◽  
pp. 209-213
Author(s):  
Peng Cao ◽  
Shu Hua Qi ◽  
Sha Sha Li
Keyword(s):  
Thermal Conductivity ◽  
Thermal Properties ◽  
In Situ Polymerization ◽  
Expanded Graphite ◽  
Resin Matrix ◽  
Novolac Resin ◽  
Graphite Nanosheets ◽  
Graphite Nanosheet ◽  
Thermal Conducting

In this study, a high thermal conductivity novolac resin /graphite nanosheet composite have been prepared via in situ polymerization at the presence of sonicated expanded graphite. Graphite nanosheets prepared via powering the expanded graphite had a thickness ranging 10~100 nm and a diameter range 5~10μm and were excellent nanofiller for the fabrication of polymer/graphite nanocomposite. Scanning election microscopy was used to characterize the structure and dispersion of the graphite nanosheets and the composites. The results showed that the structure of the nanosheets played an important role in forming thermal conducting network in the novolac resin matrix.

Synthesis and Characterization of the PANI/ITO Conducting Nanocomposites

2010 ◽  
Vol 663-665 ◽  
pp. 542-545 ◽  
Author(s):  
Bing Jie Zhu ◽  
Xin Wei Wang ◽  
Mei Fang Zhu ◽  
Qing Hong Zhang ◽  
Yao Gang Li ◽  
...  
Keyword(s):  
Doping Concentration ◽  
In Situ Polymerization ◽  
Synthesis And Characterization ◽  
Conductivity Measurements ◽  
X Ray Diffraction ◽  
X Ray ◽  
Maximum Conductivity ◽  
Scanning Electron

The PANI/ITO conducting nanocomposites have been synthesized by in-situ polymerization. The obtained nanocomposites were characterized by X-ray diffraction pattern, scanning electron microscopy and Fourier transform infrared. Electrical conductivity measurements on the samples pressed into pellets showed that the maximum conductivity attained 2.0 ± 0.05 S/cm for PANI/ITO nanocomposites, at ITO doping concentration of 10 wt%. The results of the present work may provide a simple, rapid and efficient approach for preparing PANI/ITO nanocomposites.

Morphology of Polyethylene/Montmorillonite Nanocomposites Prepared by In Situ Polymerization

2013 ◽  
Vol 457-458 ◽  
pp. 244-247
Author(s):  
Min Li ◽  
Li Guang Xiao ◽  
Hong Kai Zhao
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
In Situ Polymerization ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Reflection Peak ◽  
Basal Reflection ◽  
Scanning Electron

Polyethylene/montmorillonite (PE/MMT) nanocomposites were prepared by in situ polymerization. The morphology of MMT/MgCl2/TiCl4 catalyst and PE/MMT nanocomposites was investigated by scanning electron microscopy (SEM). It can be seen that MMT/MgCl2/TiCl4 catalyst remained the original MMT sheet structures and many holes were found in MMT and the morphology of PE/MMT nanocomposites is part of the sheet in the form of existence, as most of the petal structure. X-ray diffraction (XRD) and transmission electron microscopy (TEM) were carried out to characterize all the samples. XRD results reveal that the original basal reflection peak of PEI1 and PEI2 disappears completely and that of PEI3 become very weak. MMT/MgCl2/TiCl4 catalyst was finely dispersed in the PE matrix. Instead of being individually dispersed, most layers were found in thin stacks comprising several swollen layers.

Research on the Microstructure of Leather/Resin Composites

2013 ◽  
Vol 833 ◽  
pp. 326-329 ◽  
Author(s):  
Hua Yong Zhang ◽  
Xiao Jian Liu
Keyword(s):  
Cross Section ◽  
Polyester Resin ◽  
Raw Materials ◽  
Resin Composite ◽  
Unsaturated Polyester ◽  
Optical Microscope ◽  
Environmental Scanning ◽  
Resin Composites ◽  
Leather Wastes ◽  
Scanning Electron

Reuse of leather wastes has been paid much attention. In this article, the chrome tanned cattle (pig) leather and unsaturated polyester resin or epoxy resin were used as raw materials, leather/resin composite material was prepared. The composite sections were examined by optical microscope and environmental scanning electron microscope. By observing the cross section morphology, the performance of composites can be speculated, the effective direction for further research on leather/resin composites and development can be provided.

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