Improvement of mechanical performance of epoxy resins filled with cobalt and chromium powders
Identifieur interne : 000242 ( Istex/Corpus ); précédent : 000241; suivant : 000243Improvement of mechanical performance of epoxy resins filled with cobalt and chromium powders
Auteurs : M. El Homrany ; A. Maaroufi ; R. Benavente ; J. M. Pere A ; G. Pinto ; M. HalimSource :
- Journal of Applied Polymer Science [ 0021-8995 ] ; 2010-12-15.
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Abstract
Epoxy/ powder metal composites have interesting electrical properties, becoming conductors above the percolation threshold. To complete this study, mechanical investigations have been carried out to show the influence of the fillers on the mechanical performance of these composites. In this framework, different epoxy/metallic powders (Cobalt, Chromium) composites were prepared. Scanning Electron Microscopy showed that the dispersion of the metallic fillers in the matrix is almost homogeneous. The dynamic mechanical thermal analysis (DMTA) measurements showed the dependence of the viscoelastic parameters with the frequency, temperature, nature, and content of fillers. The main relaxations observed are the primary α relaxation (associated to the glass transition, Tg) and a secondary β relaxation. A second DMTA run on the same samples showed a slight increase of the Tg. It clearly showed that the used metallic fillers improve the mechanical properties of the obtained composites. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010
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DOI: 10.1002/app.32554
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ISTEX:BA4ACA74459BDCE4D4AC513B31E76337234B516DLe document en format XML
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To complete this study, mechanical investigations have been carried out to show the influence of the fillers on the mechanical performance of these composites. In this framework, different epoxy/metallic powders (Cobalt, Chromium) composites were prepared. Scanning Electron Microscopy showed that the dispersion of the metallic fillers in the matrix is almost homogeneous. The dynamic mechanical thermal analysis (DMTA) measurements showed the dependence of the viscoelastic parameters with the frequency, temperature, nature, and content of fillers. The main relaxations observed are the primary α relaxation (associated to the glass transition, Tg) and a secondary β relaxation. A second DMTA run on the same samples showed a slight increase of the Tg. It clearly showed that the used metallic fillers improve the mechanical properties of the obtained composites. © 2010 Wiley Periodicals, Inc. 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To complete this study, mechanical investigations have been carried out to show the influence of the fillers on the mechanical performance of these composites. In this framework, different epoxy/metallic powders (Cobalt, Chromium) composites were prepared. Scanning Electron Microscopy showed that the dispersion of the metallic fillers in the matrix is almost homogeneous. The dynamic mechanical thermal analysis (DMTA) measurements showed the dependence of the viscoelastic parameters with the frequency, temperature, nature, and content of fillers. The main relaxations observed are the primary α relaxation (associated to the glass transition, Tg) and a secondary β relaxation. A second DMTA run on the same samples showed a slight increase of the Tg. It clearly showed that the used metallic fillers improve the mechanical properties of the obtained composites. © 2010 Wiley Periodicals, Inc. 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To complete this study, mechanical investigations have been carried out to show the influence of the fillers on the mechanical performance of these composites. In this framework, different epoxy/metallic powders (Cobalt, Chromium) composites were prepared. Scanning Electron Microscopy showed that the dispersion of the metallic fillers in the matrix is almost homogeneous. The dynamic mechanical thermal analysis (DMTA) measurements showed the dependence of the viscoelastic parameters with the frequency, temperature, nature, and content of fillers. The main relaxations observed are the primary α relaxation (associated to the glass transition, <i>T</i><sub>g</sub>) and a secondary β relaxation. A second DMTA run on the same samples showed a slight increase of the <i>T</i><sub>g</sub>. It clearly showed that the used metallic fillers improve the mechanical properties of the obtained composites. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Improvement of mechanical performance of epoxy resins filled with cobalt and chromium powders</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>Improvement of Mechanical Performance of Epoxy Resins</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Improvement of mechanical performance of epoxy resins filled with cobalt and chromium powders</title></titleInfo><name type="personal"><namePart type="given">M.</namePart><namePart type="family">El Homrany</namePart><affiliation>Department of Chemistry, Faculty of Sciences, Laboratory of Composites Materials, Polymers and Environment, P.B. 1014, Rabat Agdal, Morocco</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">A.</namePart><namePart type="family">Maaroufi</namePart><affiliation>Department of Chemistry, Faculty of Sciences, Laboratory of Composites Materials, Polymers and Environment, P.B. 1014, Rabat Agdal, Morocco</affiliation><affiliation>Department of Chemistry, Faculty of Sciences, Laboratory of Composites Materials, Polymers and Environment, P.B. 1014, Rabat Agdal, Morocco===</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">R.</namePart><namePart type="family">Benavente</namePart><affiliation>Instituto de Ciencia y Tecnología de Polímeros (CSIC), Juan de la Cierva, 3, Madrid 28006, Spain</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">J. M.</namePart><namePart type="family">Pereña</namePart><affiliation>Instituto de Ciencia y Tecnología de Polímeros (CSIC), Juan de la Cierva, 3, Madrid 28006, Spain</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">G.</namePart><namePart type="family">Pinto</namePart><affiliation>Departamento de Ingeniería Química Industrial y del Medio Ambiente, E.T.S.I. Industriales, Universidad Politécnica de Madrid, Madrid 28006, Spain</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">M.</namePart><namePart type="family">Halim</namePart><affiliation>Department of Chemistry, Faculty of Sciences, Laboratory of Composites Materials, Polymers and Environment, P.B. 1014, Rabat Agdal, Morocco</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><place><placeTerm type="text">Hoboken</placeTerm></place><dateIssued encoding="w3cdtf">2010-12-15</dateIssued><dateCaptured encoding="w3cdtf">2009-10-09</dateCaptured><dateValid encoding="w3cdtf">2010-03-18</dateValid><copyrightDate encoding="w3cdtf">2010</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType><extent unit="figures">5</extent><extent unit="tables">1</extent><extent unit="references">27</extent><extent unit="words">3961</extent></physicalDescription><abstract lang="en">Epoxy/ powder metal composites have interesting electrical properties, becoming conductors above the percolation threshold. To complete this study, mechanical investigations have been carried out to show the influence of the fillers on the mechanical performance of these composites. In this framework, different epoxy/metallic powders (Cobalt, Chromium) composites were prepared. Scanning Electron Microscopy showed that the dispersion of the metallic fillers in the matrix is almost homogeneous. The dynamic mechanical thermal analysis (DMTA) measurements showed the dependence of the viscoelastic parameters with the frequency, temperature, nature, and content of fillers. The main relaxations observed are the primary α relaxation (associated to the glass transition, Tg) and a secondary β relaxation. A second DMTA run on the same samples showed a slight increase of the Tg. It clearly showed that the used metallic fillers improve the mechanical properties of the obtained composites. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010</abstract><note type="funding">Inter‐Universities Program Cooperation between Spain and Morocco</note><note type="funding">The Frame of the Scientific Projects - No. 1/04/P/E and A/6095/06; </note><note type="funding">Centre National pour la Recherche Scientifique et Technique (CNRST), Rabat (Morocco) and AECID‐Consejo Superior de Investigaciones Científicas (CSIC), Madrid (Spain) - No. nº576‐08 /CNR; </note><subject lang="en"><genre>keywords</genre><topic>composites</topic><topic>resins</topic><topic>fillers</topic><topic>aging</topic><topic>viscoelastic properties</topic></subject><relatedItem type="host"><titleInfo><title>Journal of Applied Polymer Science</title></titleInfo><titleInfo type="abbreviated"><title>J. Appl. Polym. Sci.</title></titleInfo><genre type="journal">journal</genre><identifier type="ISSN">0021-8995</identifier><identifier type="eISSN">1097-4628</identifier><identifier type="DOI">10.1002/(ISSN)1097-4628</identifier><identifier type="PublisherID">APP</identifier><part><date>2010</date><detail type="volume"><caption>vol.</caption><number>118</number></detail><detail type="issue"><caption>no.</caption><number>6</number></detail><extent unit="pages"><start>3701</start><end>3706</end><total>6</total></extent></part></relatedItem><identifier type="istex">BA4ACA74459BDCE4D4AC513B31E76337234B516D</identifier><identifier type="DOI">10.1002/app.32554</identifier><identifier type="ArticleID">APP32554</identifier><accessCondition type="use and reproduction" contentType="copyright">Copyright © 2010 Wiley Periodicals, Inc.</accessCondition><recordInfo><recordContentSource>WILEY</recordContentSource><recordOrigin>Wiley Subscription Services, Inc., A Wiley Company</recordOrigin></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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