The electromagnetic properties of blends of poly(p-phenylene-vinylene) derivatives

Courric, S.; Tran, V.H.

doi:10.1002/1099-1581(200006)11:6<273::aid-pat18>3.0.co;2-p

Cited by 17 publications

(10 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The materials processed by the monolayer type present a broad band absorbing type in the analyzed frequency ranges. Generally, the RAMs processed from conducting polymers present a characteristic of narrow band absorbing materials [6], [20]. The multilayer structures (three structures alternating the position of the substrates, in agreement with Fig.…”

Section: Resultssupporting

confidence: 79%

Hybrid multilayer structures for use as microwave absorbing material

Folgueras

Rezende

2007

2007 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference

View full text Add to dashboard Cite

The aim of this study is the in situ processing of flexible multilayer radar absorbing structures materials based on polymeric substrates impregnated with polyaniline conducting polymer. There is a growing interest in the development of low density flexible absorber material for applications that require the reduction of the reflectivity of targets with complex shapes and improvement of the ease of transportation of targets. Processed materials having different characteristics were evaluated for the attenuation in the X-band frequency. The results show how the characteristics of the impregnated layers influence the absorbing properties. The anchorage of absorbing centers on the substrate was evaluated and the different structures that were obtained attenuated the incident radiation from 65 to 99%, which indicates that these materials can be used as microwave absorbers.

show abstract

Section: Resultssupporting

confidence: 79%

Hybrid multilayer structures for use as microwave absorbing material

Folgueras

Rezende

2007

2007 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference

View full text Add to dashboard Cite

show abstract

“…[17][18][19][20][21][22][23][24][25][26] Applications of ICPs and their composites (or blends) owing to the higher electrical conductivity of these polymers in doped states have been extensively studied subsequently by many researchers. [27][28][29][30][31][32][33][34] These materials combine high conductivity (as compared with carbons), ease of processability, low density (e.g. the density of polyaniline (PANI) and polypyrrole (PPY) are 1.1-1.3 g/cm 3 35 and ca.…”

Section: Introductionmentioning

confidence: 99%

Intrinsically conducting polymers for electromagnetic interference shielding

Wang

Jing

2005

Polymers for Advanced Techs

537

274

View full text Add to dashboard Cite

This paper summarizes and reviews the research on electromagnetic interference (EMI) shielding with intrinsically conducting polymers (ICPs), mainly polyaniline (PANI) and polypyrrole (PPY), and their composites in various frequency ranges. ICPs are new alternative candidates for EMI shielding applications due to their lightweight, corrosion resistance, ease of processing, and tunable conductivities as compared with typical metals. More importantly, the dominant shielding characteristic of absorption other than that of reflection for metals render ICPs more promising materials in applications requiring not only high EMI shielding effectiveness but also shielding by absorption, such as in stealth technology.

show abstract

“…Organic radar absorbing materials are often derived from conductive polymers such as polypyrrole, polyaniline, macromolecule Schiff bases and macromolecule Schiff base salts [10]. Recently, the research of conductive polymer-based radar absorbing materials is developing fast because conductive *Corresponding author (email: xpliao@scu.edu.cn) polymers have the advantages of light weight, good softness, easy molding, and their conductivity and absorbing property can be adjusted by doping with metal ions [11,12]. Among those conductive polymers, macromolecule Schiff bases and Schiff base salts are one of the most important categories.…”

mentioning

confidence: 99%

Skin collagen fiber-based radar absorbing materials

et al. 2011

View full text Add to dashboard Cite

By using skin collagen fiber (CF) as raw material, Schiff base structure containing CF (Sa-CF) was synthesized through CF-salicylaldehyde reaction. Then a novel radar absorbing material (Fe-Sa-CF) was prepared by chelating reaction between Sa-CF and Fe 3+. The coaxial transmission and reflection method was used to analyze the complex permittivity and complex magnetic permeability of these CF-based materials, and the radar cross section (RCS) method was used to investigate their radar absorbing properties in the frequency range of 1.0-18.0 GHz. Experimental results indicated that the conductivity of CF increased from initial 1.08×10-11 to 2.86×10 -6 S/cm after being transferred into Fe-Sa-CF, and its dielectric loss tangent (tanδ) in the frequency range of 1.0-17.0 GHz also increased. These facts suggest that the Fe-Sa-CF is electric-loss type radar absorbing material. In the frequency range of 3.0-18.0 GHz, Sa-CF (1.0 mm in thickness) exhibited somewhat radar absorbing property with maximum radar reflection loss (RL) of -4.73 dB. As for Fe-Sa-CF, the absorbing bandwidth was broadened, and the absorbing intensity significantly increased in the frequency range of 1.0-18.0 GHz where a maximum radar RL of -9.23 dB was observed. In addition, the radar absorbing intensity of Fe-Sa-CF can be further improved by increasing membrane thickness. When the thickness reached to 2.0 mm, the RL values of Fe-Sa-CF were -15.0−-18.0 dB in the frequency range of 7.0-18.0 GHz. Consequently, a kind of novel radar absorbing material can be prepared by chemical modification of collagen fiber, which is characterized by thin thickness, low density, broad absorption bandwidth and high absorption intensity. skin collagen fiber, chemical modification, radar absorbing material, reflection loss (RL) Citation:Liu Y S, Huang X, Guo P P, et al. Skin collagen fiber-based radar absorbing materials.

show abstract

The electromagnetic properties of blends of poly(p-phenylene-vinylene) derivatives

Cited by 17 publications

References 14 publications

Hybrid multilayer structures for use as microwave absorbing material

Hybrid multilayer structures for use as microwave absorbing material

Intrinsically conducting polymers for electromagnetic interference shielding

Skin collagen fiber-based radar absorbing materials

Contact Info

Product

Resources

About