S‐parameters, electrical permittivity, and absorbing energy measurements of carbon nanotubes‐based composites in X‐band
Composites based on carbon nanotubes (CNT) have recently received great attention as a possible new generation of radar absorbing materials (RAM), due to their efficient microwave attenuation capacity and low density. However, RAM performance can vary significantly depending on the CNT being used. A...
Gespeichert in:
| Veröffentlicht in: | Journal of applied polymer science 2021-02, Vol.138 (7), p.n/a |
|---|---|
| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | n/a |
|---|---|
| container_issue | 7 |
| container_start_page | |
| container_title | Journal of applied polymer science |
| container_volume | 138 |
| creator | Silva, Valdirene Aparecida Rezende, Mirabel Cerqueira |
| description | Composites based on carbon nanotubes (CNT) have recently received great attention as a possible new generation of radar absorbing materials (RAM), due to their efficient microwave attenuation capacity and low density. However, RAM performance can vary significantly depending on the CNT being used. Aiming to directly show the influence of CNT from two different suppliers, both multi‐walled and non‐functionalized (CNT‐B and CNT‐K), the electromagnetic behaviors of RAM processed in epoxy resin are compared. Scattering parameters (S‐parameters), complex electrical permittivity and magnetic permeability, and absorbed energy of the composites in the X‐band (8.2–12.4 GHz) are evaluated. The results clearly show the influence of the two different CNT on the electromagnetic characteristics of composites. CNT‐B based composites behave as broadband RAM with the tendency of better attenuation results above 12.4 GHz. On the other hand, CNT‐K based composites show good attenuation results in the X‐band (>99%). Undoubtedly, the results confirm that the longer length of CNT‐K favored the interconnection among the filaments, as well as, the formation of compact agglomerates surrounded by resin rich regions, which favored the impedance matching and mechanisms of losses in the processed RAM. |
| doi_str_mv | 10.1002/app.49843 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_journals_2459301518</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2459301518</sourcerecordid><originalsourceid>FETCH-LOGICAL-c3343-463fb32ae09b0db79c7a2fd25e106c4632caeb216caa5a3b5e47a6ff230546843</originalsourceid><addsrcrecordid>eNp1kM1KAzEQx4MoWKsH3yDgSehHPna33WMpfkFBQQVvyyQ7W1K6yZqkSg-Cj-Az-iTG1qungZnf_If5EXLO2YgzJsbQdaOsnGbygPQ4KyfDrBDTQ9JLMz6clmV-TE5CWDHGec6KHvl4_P786sBDixF9GFBco47eaFjTDn1rYjRvJm4HFGxNQQXnlbFLihb9cktbhLDx2KKNgbqGavDKWWrBurhRGFK4goA11a7tXDARAzWWvuz6tj4lRw2sA5791T55vr56mt8OF_c3d_PZYqilzGT6QTZKCkBWKlarSaknIJpa5MhZodNUaEAleKEBcpAqx2wCRdMIyfKsSDL65GKf23n3usEQq5XbeJtOViLLS8l4zqeJutxT2rsQPDZV500LfltxVv3arZLdamc3seM9-27WuP0frGYPD_uNH-V4gR8</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2459301518</pqid></control><display><type>article</type><title>S‐parameters, electrical permittivity, and absorbing energy measurements of carbon nanotubes‐based composites in X‐band</title><source>Wiley Online Library - AutoHoldings Journals</source><creator>Silva, Valdirene Aparecida ; Rezende, Mirabel Cerqueira</creator><creatorcontrib>Silva, Valdirene Aparecida ; Rezende, Mirabel Cerqueira</creatorcontrib><description>Composites based on carbon nanotubes (CNT) have recently received great attention as a possible new generation of radar absorbing materials (RAM), due to their efficient microwave attenuation capacity and low density. However, RAM performance can vary significantly depending on the CNT being used. Aiming to directly show the influence of CNT from two different suppliers, both multi‐walled and non‐functionalized (CNT‐B and CNT‐K), the electromagnetic behaviors of RAM processed in epoxy resin are compared. Scattering parameters (S‐parameters), complex electrical permittivity and magnetic permeability, and absorbed energy of the composites in the X‐band (8.2–12.4 GHz) are evaluated. The results clearly show the influence of the two different CNT on the electromagnetic characteristics of composites. CNT‐B based composites behave as broadband RAM with the tendency of better attenuation results above 12.4 GHz. On the other hand, CNT‐K based composites show good attenuation results in the X‐band (>99%). Undoubtedly, the results confirm that the longer length of CNT‐K favored the interconnection among the filaments, as well as, the formation of compact agglomerates surrounded by resin rich regions, which favored the impedance matching and mechanisms of losses in the processed RAM.</description><identifier>ISSN: 0021-8995</identifier><identifier>EISSN: 1097-4628</identifier><identifier>DOI: 10.1002/app.49843</identifier><language>eng</language><publisher>Hoboken, USA: John Wiley & Sons, Inc</publisher><subject>Agglomerates ; Broadband ; Carbon nanotubes ; Composite materials ; composites ; dielectric properties ; Electromagnetic properties ; Energy absorption ; Epoxy resins ; Filaments ; graphene and fullerenes ; Impedance matching ; Magnetic permeability ; magnetism and magnetic properties ; Materials science ; Microwave attenuation ; nanotubes ; Permittivity ; Polymers ; Radar absorbers ; Radar attenuation ; S parameters</subject><ispartof>Journal of applied polymer science, 2021-02, Vol.138 (7), p.n/a</ispartof><rights>2020 Wiley Periodicals LLC</rights><rights>2020 Wiley Periodicals LLC.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3343-463fb32ae09b0db79c7a2fd25e106c4632caeb216caa5a3b5e47a6ff230546843</citedby><cites>FETCH-LOGICAL-c3343-463fb32ae09b0db79c7a2fd25e106c4632caeb216caa5a3b5e47a6ff230546843</cites><orcidid>0000-0002-3735-8765 ; 0000-0002-7192-3094</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fapp.49843$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fapp.49843$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27924,27925,45574,45575</link.rule.ids></links><search><creatorcontrib>Silva, Valdirene Aparecida</creatorcontrib><creatorcontrib>Rezende, Mirabel Cerqueira</creatorcontrib><title>S‐parameters, electrical permittivity, and absorbing energy measurements of carbon nanotubes‐based composites in X‐band</title><title>Journal of applied polymer science</title><description>Composites based on carbon nanotubes (CNT) have recently received great attention as a possible new generation of radar absorbing materials (RAM), due to their efficient microwave attenuation capacity and low density. However, RAM performance can vary significantly depending on the CNT being used. Aiming to directly show the influence of CNT from two different suppliers, both multi‐walled and non‐functionalized (CNT‐B and CNT‐K), the electromagnetic behaviors of RAM processed in epoxy resin are compared. Scattering parameters (S‐parameters), complex electrical permittivity and magnetic permeability, and absorbed energy of the composites in the X‐band (8.2–12.4 GHz) are evaluated. The results clearly show the influence of the two different CNT on the electromagnetic characteristics of composites. CNT‐B based composites behave as broadband RAM with the tendency of better attenuation results above 12.4 GHz. On the other hand, CNT‐K based composites show good attenuation results in the X‐band (>99%). Undoubtedly, the results confirm that the longer length of CNT‐K favored the interconnection among the filaments, as well as, the formation of compact agglomerates surrounded by resin rich regions, which favored the impedance matching and mechanisms of losses in the processed RAM.</description><subject>Agglomerates</subject><subject>Broadband</subject><subject>Carbon nanotubes</subject><subject>Composite materials</subject><subject>composites</subject><subject>dielectric properties</subject><subject>Electromagnetic properties</subject><subject>Energy absorption</subject><subject>Epoxy resins</subject><subject>Filaments</subject><subject>graphene and fullerenes</subject><subject>Impedance matching</subject><subject>Magnetic permeability</subject><subject>magnetism and magnetic properties</subject><subject>Materials science</subject><subject>Microwave attenuation</subject><subject>nanotubes</subject><subject>Permittivity</subject><subject>Polymers</subject><subject>Radar absorbers</subject><subject>Radar attenuation</subject><subject>S parameters</subject><issn>0021-8995</issn><issn>1097-4628</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp1kM1KAzEQx4MoWKsH3yDgSehHPna33WMpfkFBQQVvyyQ7W1K6yZqkSg-Cj-Az-iTG1qungZnf_If5EXLO2YgzJsbQdaOsnGbygPQ4KyfDrBDTQ9JLMz6clmV-TE5CWDHGec6KHvl4_P786sBDixF9GFBco47eaFjTDn1rYjRvJm4HFGxNQQXnlbFLihb9cktbhLDx2KKNgbqGavDKWWrBurhRGFK4goA11a7tXDARAzWWvuz6tj4lRw2sA5791T55vr56mt8OF_c3d_PZYqilzGT6QTZKCkBWKlarSaknIJpa5MhZodNUaEAleKEBcpAqx2wCRdMIyfKsSDL65GKf23n3usEQq5XbeJtOViLLS8l4zqeJutxT2rsQPDZV500LfltxVv3arZLdamc3seM9-27WuP0frGYPD_uNH-V4gR8</recordid><startdate>20210215</startdate><enddate>20210215</enddate><creator>Silva, Valdirene Aparecida</creator><creator>Rezende, Mirabel Cerqueira</creator><general>John Wiley & Sons, Inc</general><general>Wiley Subscription Services, Inc</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope><orcidid>https://orcid.org/0000-0002-3735-8765</orcidid><orcidid>https://orcid.org/0000-0002-7192-3094</orcidid></search><sort><creationdate>20210215</creationdate><title>S‐parameters, electrical permittivity, and absorbing energy measurements of carbon nanotubes‐based composites in X‐band</title><author>Silva, Valdirene Aparecida ; Rezende, Mirabel Cerqueira</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3343-463fb32ae09b0db79c7a2fd25e106c4632caeb216caa5a3b5e47a6ff230546843</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Agglomerates</topic><topic>Broadband</topic><topic>Carbon nanotubes</topic><topic>Composite materials</topic><topic>composites</topic><topic>dielectric properties</topic><topic>Electromagnetic properties</topic><topic>Energy absorption</topic><topic>Epoxy resins</topic><topic>Filaments</topic><topic>graphene and fullerenes</topic><topic>Impedance matching</topic><topic>Magnetic permeability</topic><topic>magnetism and magnetic properties</topic><topic>Materials science</topic><topic>Microwave attenuation</topic><topic>nanotubes</topic><topic>Permittivity</topic><topic>Polymers</topic><topic>Radar absorbers</topic><topic>Radar attenuation</topic><topic>S parameters</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Silva, Valdirene Aparecida</creatorcontrib><creatorcontrib>Rezende, Mirabel Cerqueira</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Journal of applied polymer science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Silva, Valdirene Aparecida</au><au>Rezende, Mirabel Cerqueira</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>S‐parameters, electrical permittivity, and absorbing energy measurements of carbon nanotubes‐based composites in X‐band</atitle><jtitle>Journal of applied polymer science</jtitle><date>2021-02-15</date><risdate>2021</risdate><volume>138</volume><issue>7</issue><epage>n/a</epage><issn>0021-8995</issn><eissn>1097-4628</eissn><abstract>Composites based on carbon nanotubes (CNT) have recently received great attention as a possible new generation of radar absorbing materials (RAM), due to their efficient microwave attenuation capacity and low density. However, RAM performance can vary significantly depending on the CNT being used. Aiming to directly show the influence of CNT from two different suppliers, both multi‐walled and non‐functionalized (CNT‐B and CNT‐K), the electromagnetic behaviors of RAM processed in epoxy resin are compared. Scattering parameters (S‐parameters), complex electrical permittivity and magnetic permeability, and absorbed energy of the composites in the X‐band (8.2–12.4 GHz) are evaluated. The results clearly show the influence of the two different CNT on the electromagnetic characteristics of composites. CNT‐B based composites behave as broadband RAM with the tendency of better attenuation results above 12.4 GHz. On the other hand, CNT‐K based composites show good attenuation results in the X‐band (>99%). Undoubtedly, the results confirm that the longer length of CNT‐K favored the interconnection among the filaments, as well as, the formation of compact agglomerates surrounded by resin rich regions, which favored the impedance matching and mechanisms of losses in the processed RAM.</abstract><cop>Hoboken, USA</cop><pub>John Wiley & Sons, Inc</pub><doi>10.1002/app.49843</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0002-3735-8765</orcidid><orcidid>https://orcid.org/0000-0002-7192-3094</orcidid></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0021-8995 |
| ispartof | Journal of applied polymer science, 2021-02, Vol.138 (7), p.n/a |
| issn | 0021-8995 1097-4628 |
| language | eng |
| recordid | cdi_proquest_journals_2459301518 |
| source | Wiley Online Library - AutoHoldings Journals |
| subjects | Agglomerates Broadband Carbon nanotubes Composite materials composites dielectric properties Electromagnetic properties Energy absorption Epoxy resins Filaments graphene and fullerenes Impedance matching Magnetic permeability magnetism and magnetic properties Materials science Microwave attenuation nanotubes Permittivity Polymers Radar absorbers Radar attenuation S parameters |
| title | S‐parameters, electrical permittivity, and absorbing energy measurements of carbon nanotubes‐based composites in X‐band |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-24T15%3A06%3A33IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=S%E2%80%90parameters,%20electrical%20permittivity,%20and%20absorbing%20energy%20measurements%20of%20carbon%20nanotubes%E2%80%90based%20composites%20in%20X%E2%80%90band&rft.jtitle=Journal%20of%20applied%20polymer%20science&rft.au=Silva,%20Valdirene%20Aparecida&rft.date=2021-02-15&rft.volume=138&rft.issue=7&rft.epage=n/a&rft.issn=0021-8995&rft.eissn=1097-4628&rft_id=info:doi/10.1002/app.49843&rft_dat=%3Cproquest_cross%3E2459301518%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2459301518&rft_id=info:pmid/&rfr_iscdi=true |