Mechanical and flame‐resistance properties of polyurethane‐imide foams with different‐sized expandable graphite
Polyurethane‐imide (PUI) composite foams with expandable graphite (EG) of different sizes were prepared by a polyimide prepolymer method. EG particles were treated with a silane coupling agent to improve compatibility with the foam. The effect of EG particle size on cell morphology, thermal degradat...
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| Veröffentlicht in: | Polymer engineering and science 2020-09, Vol.60 (9), p.2324-2332 |
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| container_title | Polymer engineering and science |
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| creator | Xiong, Weiwen Liu, Hongtao Tian, Huafeng Wu, Jiali Xiang, Aimin Wang, Chaoyang Ma, Songbai Wu, Qiangxian |
| description | Polyurethane‐imide (PUI) composite foams with expandable graphite (EG) of different sizes were prepared by a polyimide prepolymer method. EG particles were treated with a silane coupling agent to improve compatibility with the foam. The effect of EG particle size on cell morphology, thermal degradation, flame‐resistance and mechanical properties of PUI foams was investigated. Results showed that the mean cellular diameter of foams with EG particle was much higher than that of foams with surface‐modified EG particle at the same filler loading. When filler particle diameter increased from 20 to 90 μm, the compressive strength, density and closed‐cell ratio of foams increased, and then decreased when filler particle diameter further increased from 90 to 150 μm. Thermal stability of foams increased with the increasing filler particle diameter from 20 to 50 μm, and decreased with the increasing filler particle diameter from 50 to 90 μm. The limited oxygen index (LOI) value of foams with surface‐modified EG increased from 24.8% to 32.1% when EG particle diameter was below 90 μm. Foams with surface‐modified EG exhibited enhanced mechanical properties, thermal stability and flame resistance than foams with neat EG at the same loading.
Schematic diagram of the effect of filler particle size on the PUI foams. |
| doi_str_mv | 10.1002/pen.25475 |
| format | Article |
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Schematic diagram of the effect of filler particle size on the PUI foams.</description><identifier>ISSN: 0032-3888</identifier><identifier>EISSN: 1548-2634</identifier><identifier>DOI: 10.1002/pen.25475</identifier><language>eng</language><publisher>Hoboken, USA: John Wiley & Sons, Inc</publisher><subject>Analysis ; Compressive strength ; Coupling agents ; expandable graphite ; Fire resistance ; Graphite ; Mechanical properties ; Morphology ; Particle size ; Plastic foam ; Polyurethane foam ; Polyurethanes ; polyurethane‐imide foams ; Prepolymers ; Silane ; Silanes ; surface modification ; Thermal degradation ; Thermal resistance ; Thermal stability</subject><ispartof>Polymer engineering and science, 2020-09, Vol.60 (9), p.2324-2332</ispartof><rights>2020 Society of Plastics Engineers</rights><rights>COPYRIGHT 2020 Society of Plastics Engineers, Inc.</rights><rights>COPYRIGHT 2020 Society of Plastics Engineers, Inc.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c5415-28e6d5f74c4465fce7b1dd5d9e26a2fc4363a58a18eee866dc4b8570882e36503</citedby><cites>FETCH-LOGICAL-c5415-28e6d5f74c4465fce7b1dd5d9e26a2fc4363a58a18eee866dc4b8570882e36503</cites><orcidid>0000-0003-3842-0337 ; 0000-0001-5123-3590</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%2Fpen.25475$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fpen.25475$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27901,27902,45550,45551</link.rule.ids></links><search><creatorcontrib>Xiong, Weiwen</creatorcontrib><creatorcontrib>Liu, Hongtao</creatorcontrib><creatorcontrib>Tian, Huafeng</creatorcontrib><creatorcontrib>Wu, Jiali</creatorcontrib><creatorcontrib>Xiang, Aimin</creatorcontrib><creatorcontrib>Wang, Chaoyang</creatorcontrib><creatorcontrib>Ma, Songbai</creatorcontrib><creatorcontrib>Wu, Qiangxian</creatorcontrib><title>Mechanical and flame‐resistance properties of polyurethane‐imide foams with different‐sized expandable graphite</title><title>Polymer engineering and science</title><description>Polyurethane‐imide (PUI) composite foams with expandable graphite (EG) of different sizes were prepared by a polyimide prepolymer method. EG particles were treated with a silane coupling agent to improve compatibility with the foam. The effect of EG particle size on cell morphology, thermal degradation, flame‐resistance and mechanical properties of PUI foams was investigated. Results showed that the mean cellular diameter of foams with EG particle was much higher than that of foams with surface‐modified EG particle at the same filler loading. When filler particle diameter increased from 20 to 90 μm, the compressive strength, density and closed‐cell ratio of foams increased, and then decreased when filler particle diameter further increased from 90 to 150 μm. Thermal stability of foams increased with the increasing filler particle diameter from 20 to 50 μm, and decreased with the increasing filler particle diameter from 50 to 90 μm. The limited oxygen index (LOI) value of foams with surface‐modified EG increased from 24.8% to 32.1% when EG particle diameter was below 90 μm. Foams with surface‐modified EG exhibited enhanced mechanical properties, thermal stability and flame resistance than foams with neat EG at the same loading.
Schematic diagram of the effect of filler particle size on the PUI foams.</description><subject>Analysis</subject><subject>Compressive strength</subject><subject>Coupling agents</subject><subject>expandable graphite</subject><subject>Fire resistance</subject><subject>Graphite</subject><subject>Mechanical properties</subject><subject>Morphology</subject><subject>Particle size</subject><subject>Plastic foam</subject><subject>Polyurethane foam</subject><subject>Polyurethanes</subject><subject>polyurethane‐imide foams</subject><subject>Prepolymers</subject><subject>Silane</subject><subject>Silanes</subject><subject>surface modification</subject><subject>Thermal degradation</subject><subject>Thermal resistance</subject><subject>Thermal stability</subject><issn>0032-3888</issn><issn>1548-2634</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>N95</sourceid><recordid>eNp10t1qFDEUB_BBFFxbL3yDgCAIzjafs9nLUlpbqLVUvQ7Z5GQ2ZSYzJhna9cpH6DP6JKauoAtbAgkkv_8JB05VvSF4TjCmRyOEORV8IZ5VMyK4rGnD-PNqhjGjNZNSvqxepXSLi2ViOaumT2DWOnijO6SDRa7TPfz6-RAh-ZR1MIDGOIwQs4eEBofGodtMEXIJPTrfewvIDbpP6M7nNbLeOYgQcnlM_gdYBPdjqaxXHaA26nHtMxxWL5zuErz-ex5U385Ov56c15efP16cHF_WRnAiaiqhscItuOG8Ec7AYkWsFXYJtNHUGc4apoXURAKAbBpr-EqKBZaSAmsEZgfV223d0sP3CVJWt8MUQ_lSUc6pZEQu-T_V6g6UD27IUZveJ6OOGyYZxnxJiqr3qBYCRN0NAZwv1zt-vseXZaH3Zm_g3U6gmAz3udVTSmoXvn8aXny52bUf_rOrKfkAqWzJt-uctpF9pU0cUorg1Bh9r-NGEaweB0yVAVN_BqzYo629K41snobq-vRqm_gNGgbTAA</recordid><startdate>202009</startdate><enddate>202009</enddate><creator>Xiong, Weiwen</creator><creator>Liu, Hongtao</creator><creator>Tian, Huafeng</creator><creator>Wu, Jiali</creator><creator>Xiang, Aimin</creator><creator>Wang, Chaoyang</creator><creator>Ma, Songbai</creator><creator>Wu, Qiangxian</creator><general>John Wiley & Sons, Inc</general><general>Society of Plastics Engineers, Inc</general><general>Blackwell Publishing Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>N95</scope><scope>XI7</scope><scope>ISR</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope><orcidid>https://orcid.org/0000-0003-3842-0337</orcidid><orcidid>https://orcid.org/0000-0001-5123-3590</orcidid></search><sort><creationdate>202009</creationdate><title>Mechanical and flame‐resistance properties of polyurethane‐imide foams with different‐sized expandable graphite</title><author>Xiong, Weiwen ; Liu, Hongtao ; Tian, Huafeng ; Wu, Jiali ; Xiang, Aimin ; Wang, Chaoyang ; Ma, Songbai ; Wu, Qiangxian</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c5415-28e6d5f74c4465fce7b1dd5d9e26a2fc4363a58a18eee866dc4b8570882e36503</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Analysis</topic><topic>Compressive strength</topic><topic>Coupling agents</topic><topic>expandable graphite</topic><topic>Fire resistance</topic><topic>Graphite</topic><topic>Mechanical properties</topic><topic>Morphology</topic><topic>Particle size</topic><topic>Plastic foam</topic><topic>Polyurethane foam</topic><topic>Polyurethanes</topic><topic>polyurethane‐imide foams</topic><topic>Prepolymers</topic><topic>Silane</topic><topic>Silanes</topic><topic>surface modification</topic><topic>Thermal degradation</topic><topic>Thermal resistance</topic><topic>Thermal stability</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Xiong, Weiwen</creatorcontrib><creatorcontrib>Liu, Hongtao</creatorcontrib><creatorcontrib>Tian, Huafeng</creatorcontrib><creatorcontrib>Wu, Jiali</creatorcontrib><creatorcontrib>Xiang, Aimin</creatorcontrib><creatorcontrib>Wang, Chaoyang</creatorcontrib><creatorcontrib>Ma, Songbai</creatorcontrib><creatorcontrib>Wu, Qiangxian</creatorcontrib><collection>CrossRef</collection><collection>Gale Business: Insights</collection><collection>Business Insights: Essentials</collection><collection>Gale In Context: Science</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Polymer engineering and science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Xiong, Weiwen</au><au>Liu, Hongtao</au><au>Tian, Huafeng</au><au>Wu, Jiali</au><au>Xiang, Aimin</au><au>Wang, Chaoyang</au><au>Ma, Songbai</au><au>Wu, Qiangxian</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Mechanical and flame‐resistance properties of polyurethane‐imide foams with different‐sized expandable graphite</atitle><jtitle>Polymer engineering and science</jtitle><date>2020-09</date><risdate>2020</risdate><volume>60</volume><issue>9</issue><spage>2324</spage><epage>2332</epage><pages>2324-2332</pages><issn>0032-3888</issn><eissn>1548-2634</eissn><abstract>Polyurethane‐imide (PUI) composite foams with expandable graphite (EG) of different sizes were prepared by a polyimide prepolymer method. EG particles were treated with a silane coupling agent to improve compatibility with the foam. The effect of EG particle size on cell morphology, thermal degradation, flame‐resistance and mechanical properties of PUI foams was investigated. Results showed that the mean cellular diameter of foams with EG particle was much higher than that of foams with surface‐modified EG particle at the same filler loading. When filler particle diameter increased from 20 to 90 μm, the compressive strength, density and closed‐cell ratio of foams increased, and then decreased when filler particle diameter further increased from 90 to 150 μm. Thermal stability of foams increased with the increasing filler particle diameter from 20 to 50 μm, and decreased with the increasing filler particle diameter from 50 to 90 μm. The limited oxygen index (LOI) value of foams with surface‐modified EG increased from 24.8% to 32.1% when EG particle diameter was below 90 μm. Foams with surface‐modified EG exhibited enhanced mechanical properties, thermal stability and flame resistance than foams with neat EG at the same loading.
Schematic diagram of the effect of filler particle size on the PUI foams.</abstract><cop>Hoboken, USA</cop><pub>John Wiley & Sons, Inc</pub><doi>10.1002/pen.25475</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0003-3842-0337</orcidid><orcidid>https://orcid.org/0000-0001-5123-3590</orcidid></addata></record> |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Analysis Compressive strength Coupling agents expandable graphite Fire resistance Graphite Mechanical properties Morphology Particle size Plastic foam Polyurethane foam Polyurethanes polyurethane‐imide foams Prepolymers Silane Silanes surface modification Thermal degradation Thermal resistance Thermal stability |
| title | Mechanical and flame‐resistance properties of polyurethane‐imide foams with different‐sized expandable graphite |
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