PANI / MWNTs / EP Composite Microwave Absorbing Coatings Dielectrical and Microwave Absorbing Properties Analysis

2013 ◽  
Vol 303-306 ◽  
pp. 2477-2480 ◽  
Author(s):  
Chong Guang Zang ◽  
Xian Peng Cao
Keyword(s):  
Reflection Loss ◽  
In Situ Polymerization ◽  
Microwave Absorbing Properties ◽  
Microwave Absorbing Materials ◽  
Multi Walled Carbon Nanotubes ◽  
Properties Of Materials ◽  
Microwave Absorbing ◽  
Absorbing Property ◽  
Walled Carbon Nanotubes

In this paper, the polyaniline (PANI) coated multi-walled carbon nanotubes (MWNTs) was prepared in situ polymerization. Adding PANI/MWNTs into epoxy resin（EP）, we got PANI / MWNTs / EP composite microwave absorbing materials. Through testing permittivity 、permeability and reflection loss of materials, the paper showed the effect of PANI/MWNTS to the dielectrical and microwave absorbing properties of materials.The results showed： PANI/MWNTs had great effect on dielectrical and microwave absorbing properties of materials. But the imaginary permeability was close to 0. That indicated that it mainly consumed electromagnetic wave by dielectric loss. In 200-1000MHZ, materials had better absorbing property and lower reflection loss (-13.6).

Enhanced microwave absorbing properties of PVP@multi-walled carbon nanotubes/graphene three-dimensional hybrids

RSC Advances ◽  
2015 ◽  
Vol 5 (102) ◽  
pp. 83953-83959 ◽  
Author(s):  
Lichao Ding ◽  
Aibo Zhang ◽  
Honglong Lu ◽  
Yanping Zhang ◽  
Yaping Zheng
Keyword(s):  
Carbon Nanotubes ◽  
Reflection Loss ◽  
Three Dimensional ◽  
Microwave Absorbing Properties ◽  
Multi Walled Carbon Nanotubes ◽  
Microwave Absorbing ◽  
Walled Carbon Nanotubes

Reflection loss of (a) GNPs; (b) MWNTs; (c) PVP@MWNTs/GNPs hybrids.

Synthesis and microwave absorbing properties of CeO2/multi-walled carbon nanotubes composites

2018 ◽  
Vol 29 (22) ◽  
pp. 19308-19315 ◽  
Author(s):  
Huan Wang ◽  
Honglong Xing ◽  
Qiangchun Liu ◽  
Hanxiao Jia ◽  
Aijuan Chen ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Microwave Absorbing Properties ◽  
Multi Walled Carbon Nanotubes ◽  
Microwave Absorbing ◽  
Walled Carbon Nanotubes

Study on the Properties of MWNTs/Polyethylene Nanocomposites by In Situ Polymerization

2012 ◽  
Vol 192 ◽  
pp. 289-292
Author(s):  
Shi Yun Li ◽  
De Sheng Hu
Keyword(s):  
Mechanical Properties ◽  
In Situ Polymerization ◽  
Thermal Stabilities ◽  
Multi Walled Carbon Nanotubes ◽  
Photooxidative Stability ◽  
Shielding Properties ◽  
Walled Carbon Nanotubes ◽  
Very High ◽  
Fractured Surface

Multi–walled carbon nanotubes (MWNTs)/polyethylene (PE) nanocomposites were prepared via in situ polymerization with MWNTs supported Cp2ZrCl2 catalyst. XPS and FESEM results imply that Cp2ZrCl2 catalyst has been immobilized in the surface of the MWNTs supports by a MAO bridge. The efficient dispersion of MWNTs in PE matrix and the strong compressive forces associated with PE on the MWNTs were demonstrated by TEM, FESEM and Raman spectra. With introducing 0.2 wt.-% MWNTs, both the tensile strength and elongation of MWNTs/PE nanocomposite increased by factors of 1.6 (from 29 MPa to 45 MPa) and 1.5 (from 909% to 1360%) comparing with the pure PE, respectively. Morphology observation of fractured surface, in accordance with the Raman results, revealed that the PE firmly adheres to the nanotubes, which is responsible for the significant improvement of the mechanical properties of nanocomposites. Thermal stabilities of the nanocomposites were significantly improved. In addition, the MWNTs/PE nanocomposites show very high UV shielding properties, which could increase photooxidative stability of the PE.

Dispersion of multi-walled carbon nanotubes in poly(aryl ether ketone) obtained by in situ polymerization

2009 ◽  
Vol 58 (7) ◽  
pp. 832-837 ◽  
Author(s):  
Ying Du ◽  
Nantao Hu ◽  
Hongwei Zhou ◽  
Peng Li ◽  
Peng Zhang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
In Situ Polymerization ◽  
Aryl Ether ◽  
Multi Walled Carbon Nanotubes ◽  
Aryl Ether Ketone ◽  
Ether Ketone ◽  
Walled Carbon Nanotubes

Synthesis and characterization of multi-walled carbon nanotubes reinforced polyamide 6 via in situ polymerization

Polymer ◽  
2005 ◽  
Vol 46 (14) ◽  
pp. 5125-5132 ◽  
Author(s):  
Chungui Zhao ◽  
Guanjun Hu ◽  
Ryan Justice ◽  
Dale W. Schaefer ◽  
Shimin Zhang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
In Situ Polymerization ◽  
Polyamide 6 ◽  
Synthesis And Characterization ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

The Improvement of Mechanical Properties of Polyurethane Coating by Multi-Walled Carbon Nanotubes

2011 ◽  
Vol 236-238 ◽  
pp. 2063-2066
Author(s):  
Xian Kai Jiang ◽  
Ji You Gu ◽  
Yan Hua Zhang
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
In Situ Polymerization ◽  
Impact Resistance ◽  
Polyurethane Coating ◽  
Polyurethane Coatings ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Better Than

Mechanical properties of polyurethane coating were improved by multi-walled carbon nanotubes (MWNTs) via in situ polymerization and blending polymerization. Fourier transform infrared spectroscopy (FT-IR) measurement was employed to assess the influence of acid treatment on MWNTs. Mechanical properties analysis of polyurethane coatings including tensile strength, elastic modulus, hardness, flexibility, impact resistance were employed to assess the improvement of mechanical properties of polyurethane coating by MWNTs. The results indicated that MWNTs could improve the mechanical properties of polyurethane coatings, and the improvement of polyurethane coatings by MWNTs via in situ polymerization were better than via blending polymerization, and the improvement of polyurethane coatings by acid-treated MWNTs were better than by raw MWNTs.

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