Melting and degradation of nylon-11 particles during HVOF combustion spraying
Numerical predictions and experimental observations have been correlated to improve the qualitative understanding of the degree of thermal degradation occurring during the HVOF spray deposition of nylon‐11. Particle residence time (∼ 1 ms) in the HVOF jet was insufficient for significant decompositi...
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| Veröffentlicht in: | Journal of applied polymer science 2007-07, Vol.105 (2), p.827-837 |
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| container_title | Journal of applied polymer science |
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| creator | Ivosevic, Milan Cairncross, Richard A. Knight, Richard |
| description | Numerical predictions and experimental observations have been correlated to improve the qualitative understanding of the degree of thermal degradation occurring during the HVOF spray deposition of nylon‐11. Particle residence time (∼ 1 ms) in the HVOF jet was insufficient for significant decomposition of the nylon‐11, but was sufficient for noticeable discoloration (yellowing) of the particles of a powder with a mean particle size of 30 μm. Experimental observation showed this to be the case even though numerical predictions indicated that the temperature of a 30 μm diameter particle should be considerably higher than the upper degradation limit of nylon‐11. Initial thermal oxidation of nylon‐11 promotes the formation of carbon–carbon double bonds that strongly absorb in the visible spectrum even at concentrations of parts per million causing discoloration of the nylon. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007 |
| doi_str_mv | 10.1002/app.25896 |
| format | Article |
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Particle residence time (∼ 1 ms) in the HVOF jet was insufficient for significant decomposition of the nylon‐11, but was sufficient for noticeable discoloration (yellowing) of the particles of a powder with a mean particle size of 30 μm. Experimental observation showed this to be the case even though numerical predictions indicated that the temperature of a 30 μm diameter particle should be considerably higher than the upper degradation limit of nylon‐11. Initial thermal oxidation of nylon‐11 promotes the formation of carbon–carbon double bonds that strongly absorb in the visible spectrum even at concentrations of parts per million causing discoloration of the nylon. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007</description><identifier>ISSN: 0021-8995</identifier><identifier>EISSN: 1097-4628</identifier><identifier>DOI: 10.1002/app.25896</identifier><identifier>CODEN: JAPNAB</identifier><language>eng</language><publisher>Hoboken: Wiley Subscription Services, Inc., A Wiley Company</publisher><subject>Applied sciences ; coatings ; degradation ; Exact sciences and technology ; HVOF ; HVOF, degradation, modeling ; Machinery and processing ; Miscellaneous ; modeling ; Plastics ; Polymer industry, paints, wood ; polymers ; Technology of polymers ; thermal spray</subject><ispartof>Journal of applied polymer science, 2007-07, Vol.105 (2), p.827-837</ispartof><rights>Copyright © 2007 Wiley Periodicals, Inc.</rights><rights>2008 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3686-89ae9fa4762b3eccb4dd32fb69bf78fec05db64355ca04819f57618a4d7e117d3</citedby><cites>FETCH-LOGICAL-c3686-89ae9fa4762b3eccb4dd32fb69bf78fec05db64355ca04819f57618a4d7e117d3</cites></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.25896$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fapp.25896$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27903,27904,45553,45554</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=18783102$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Ivosevic, Milan</creatorcontrib><creatorcontrib>Cairncross, Richard A.</creatorcontrib><creatorcontrib>Knight, Richard</creatorcontrib><title>Melting and degradation of nylon-11 particles during HVOF combustion spraying</title><title>Journal of applied polymer science</title><addtitle>J. Appl. Polym. Sci</addtitle><description>Numerical predictions and experimental observations have been correlated to improve the qualitative understanding of the degree of thermal degradation occurring during the HVOF spray deposition of nylon‐11. Particle residence time (∼ 1 ms) in the HVOF jet was insufficient for significant decomposition of the nylon‐11, but was sufficient for noticeable discoloration (yellowing) of the particles of a powder with a mean particle size of 30 μm. Experimental observation showed this to be the case even though numerical predictions indicated that the temperature of a 30 μm diameter particle should be considerably higher than the upper degradation limit of nylon‐11. Initial thermal oxidation of nylon‐11 promotes the formation of carbon–carbon double bonds that strongly absorb in the visible spectrum even at concentrations of parts per million causing discoloration of the nylon. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007</description><subject>Applied sciences</subject><subject>coatings</subject><subject>degradation</subject><subject>Exact sciences and technology</subject><subject>HVOF</subject><subject>HVOF, degradation, modeling</subject><subject>Machinery and processing</subject><subject>Miscellaneous</subject><subject>modeling</subject><subject>Plastics</subject><subject>Polymer industry, paints, wood</subject><subject>polymers</subject><subject>Technology of polymers</subject><subject>thermal spray</subject><issn>0021-8995</issn><issn>1097-4628</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNp1kEtLw0AUhQdRsFYX_oNsFFyknUkyjyxFbSu2KvgCN8PNPEo0TeJMiubfGxsfK1d3cb7zcTkIHRI8IhhHY6jrUURFyrbQgOCUhwmLxDYadBkJRZrSXbTn_QvGhFDMBmixMEWTl8sASh1os3SgocmrMqhsULZFVYaEBDW4JleF8YFeuy949ngzCVS1ytZ-A_vaQdsF-2jHQuHNwfcdoofJxf3ZLJzfTC_PTuehiplg3R9gUgsJZ1EWG6WyROs4shlLM8uFNQpTnbEkplQBTgRJLeWMCEg0N4RwHQ_Rce-tXfW2Nr6Rq9wrUxRQmmrtZZQKyilPOvCkB5WrvHfGytrlK3CtJFh-DSa7weRmsI49-paCV1BYB6XK_V9BcBETHHXcuOfe88K0_wvl6e3tjznsG7lvzMdvA9yrZDzmVD5dT-Xi7opfs-dzuYg_Af1biTA</recordid><startdate>20070715</startdate><enddate>20070715</enddate><creator>Ivosevic, Milan</creator><creator>Cairncross, Richard A.</creator><creator>Knight, Richard</creator><general>Wiley Subscription Services, Inc., A Wiley Company</general><general>Wiley</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20070715</creationdate><title>Melting and degradation of nylon-11 particles during HVOF combustion spraying</title><author>Ivosevic, Milan ; Cairncross, Richard A. ; Knight, Richard</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3686-89ae9fa4762b3eccb4dd32fb69bf78fec05db64355ca04819f57618a4d7e117d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Applied sciences</topic><topic>coatings</topic><topic>degradation</topic><topic>Exact sciences and technology</topic><topic>HVOF</topic><topic>HVOF, degradation, modeling</topic><topic>Machinery and processing</topic><topic>Miscellaneous</topic><topic>modeling</topic><topic>Plastics</topic><topic>Polymer industry, paints, wood</topic><topic>polymers</topic><topic>Technology of polymers</topic><topic>thermal spray</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ivosevic, Milan</creatorcontrib><creatorcontrib>Cairncross, Richard A.</creatorcontrib><creatorcontrib>Knight, Richard</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><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>Ivosevic, Milan</au><au>Cairncross, Richard A.</au><au>Knight, Richard</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Melting and degradation of nylon-11 particles during HVOF combustion spraying</atitle><jtitle>Journal of applied polymer science</jtitle><addtitle>J. Appl. Polym. Sci</addtitle><date>2007-07-15</date><risdate>2007</risdate><volume>105</volume><issue>2</issue><spage>827</spage><epage>837</epage><pages>827-837</pages><issn>0021-8995</issn><eissn>1097-4628</eissn><coden>JAPNAB</coden><abstract>Numerical predictions and experimental observations have been correlated to improve the qualitative understanding of the degree of thermal degradation occurring during the HVOF spray deposition of nylon‐11. Particle residence time (∼ 1 ms) in the HVOF jet was insufficient for significant decomposition of the nylon‐11, but was sufficient for noticeable discoloration (yellowing) of the particles of a powder with a mean particle size of 30 μm. Experimental observation showed this to be the case even though numerical predictions indicated that the temperature of a 30 μm diameter particle should be considerably higher than the upper degradation limit of nylon‐11. Initial thermal oxidation of nylon‐11 promotes the formation of carbon–carbon double bonds that strongly absorb in the visible spectrum even at concentrations of parts per million causing discoloration of the nylon. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007</abstract><cop>Hoboken</cop><pub>Wiley Subscription Services, Inc., A Wiley Company</pub><doi>10.1002/app.25896</doi><tpages>11</tpages></addata></record> |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Applied sciences coatings degradation Exact sciences and technology HVOF HVOF, degradation, modeling Machinery and processing Miscellaneous modeling Plastics Polymer industry, paints, wood polymers Technology of polymers thermal spray |
| title | Melting and degradation of nylon-11 particles during HVOF combustion spraying |
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