Effect of alkyl-disubstituted ureido silanes with different alkyl chain structures on tracking resistance property of addition-cure liquid silicone rubber
Ureido silane is considered to be a novel tracking resistance additive for effectively improving the tracking resistance property of addition-cure liquid silicone rubber (ALSR). In this work, a series of alkyl-disubstituted ureido silanes (ADUSs) with different alkyl chain structures were synthesize...
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| Veröffentlicht in: | Polymer degradation and stability 2017-08, Vol.142, p.263-272 |
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| creator | Xie, Chixin Zeng, Xingrong Fang, Weizhen Lai, Xuejun Li, Hongqiang |
| description | Ureido silane is considered to be a novel tracking resistance additive for effectively improving the tracking resistance property of addition-cure liquid silicone rubber (ALSR). In this work, a series of alkyl-disubstituted ureido silanes (ADUSs) with different alkyl chain structures were synthesized by the transetherification of allyl alcohol (AA) and alkyl-disubstituted ureido siloxanes from the nucleophilic addition between alkyl-disubstituted amides and 3-isocyanatopropyltriethoxysilane (ICPES). The effect of ADUSs with different alkyl chain structures on the tracking resistance property of ALSR was investigated by inclined plane test (IPT), thermogravimetry analysis (TGA), thermogravimetry-Fourier transform infrared spectrometry (TG-FTIR) and energy dispersive spectroscopy (EDS). The results showed that ADUSs could effectively improve the tracking resistance property of ALSR, especially for (γ-diisopropylureidopropyl) allyloxyethoxysilane (DIPUPAS), (γ-dibutylureidopropyl) allyloxyethoxysilane (DBUPAS) and (γ-diisobutylureidopropyl) allyloxyethoxysilane (DIBUPAS). ALSR incorporated with DIPUPAS, DBUPAS and DIBUPAS passed the inclined plane test (IPT) at the alternating voltage of 4.5 kV and the average erosion mass was only 3.8%, 3.4% and 4.4% of the virgin ALSR, respectively. TGA and TG-FTIR results revealed that DIPUPAS, DBUPAS and DIBUPAS could also effectively improve the thermal stability of ALSR. Accompanying with the weakened oxidation reactions of methyl groups in molecular chains, the formed cyclic oligomers decreased. Meanwhile, the release of methane and cross-linking reaction of the silicone rubber chains were enhanced, leading to the increase of residue under high temperature and the formation of a ceramic barrier layer to protect the silicone rubber matrix. EDS results showed that the carbon content in ceramic barrier layer decreased, which was beneficial to prohibit the development of tracking. |
| doi_str_mv | 10.1016/j.polymdegradstab.2017.07.015 |
| format | Article |
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In this work, a series of alkyl-disubstituted ureido silanes (ADUSs) with different alkyl chain structures were synthesized by the transetherification of allyl alcohol (AA) and alkyl-disubstituted ureido siloxanes from the nucleophilic addition between alkyl-disubstituted amides and 3-isocyanatopropyltriethoxysilane (ICPES). The effect of ADUSs with different alkyl chain structures on the tracking resistance property of ALSR was investigated by inclined plane test (IPT), thermogravimetry analysis (TGA), thermogravimetry-Fourier transform infrared spectrometry (TG-FTIR) and energy dispersive spectroscopy (EDS). The results showed that ADUSs could effectively improve the tracking resistance property of ALSR, especially for (γ-diisopropylureidopropyl) allyloxyethoxysilane (DIPUPAS), (γ-dibutylureidopropyl) allyloxyethoxysilane (DBUPAS) and (γ-diisobutylureidopropyl) allyloxyethoxysilane (DIBUPAS). ALSR incorporated with DIPUPAS, DBUPAS and DIBUPAS passed the inclined plane test (IPT) at the alternating voltage of 4.5 kV and the average erosion mass was only 3.8%, 3.4% and 4.4% of the virgin ALSR, respectively. TGA and TG-FTIR results revealed that DIPUPAS, DBUPAS and DIBUPAS could also effectively improve the thermal stability of ALSR. Accompanying with the weakened oxidation reactions of methyl groups in molecular chains, the formed cyclic oligomers decreased. Meanwhile, the release of methane and cross-linking reaction of the silicone rubber chains were enhanced, leading to the increase of residue under high temperature and the formation of a ceramic barrier layer to protect the silicone rubber matrix. EDS results showed that the carbon content in ceramic barrier layer decreased, which was beneficial to prohibit the development of tracking.</description><identifier>ISSN: 0141-3910</identifier><identifier>EISSN: 1873-2321</identifier><identifier>DOI: 10.1016/j.polymdegradstab.2017.07.015</identifier><language>eng</language><publisher>London: Elsevier Ltd</publisher><subject>Addition-cure liquid silicone rubber ; Additives ; Alkyl-disubstituted ureido silane ; Amides ; Carbon content ; Catalytic oxidation ; Crosslinking ; Cyclic oligomers ; Erosion ; Erosion resistance ; Fourier transforms ; Infrared analysis ; Infrared spectroscopy ; Molecular chains ; Oligomers ; Oxidation ; Rubber ; Silanes ; Silicone rubber ; Silicones ; Siloxanes ; Studies ; Thermal stability ; Thermogravimetry ; Tracking ; Tracking resistance</subject><ispartof>Polymer degradation and stability, 2017-08, Vol.142, p.263-272</ispartof><rights>2017 Elsevier Ltd</rights><rights>Copyright Elsevier BV Aug 2017</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c361t-757fce2807fbd75f38d60f58ea44a816101607797c1a6b37e127e83cee0315753</citedby><cites>FETCH-LOGICAL-c361t-757fce2807fbd75f38d60f58ea44a816101607797c1a6b37e127e83cee0315753</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.polymdegradstab.2017.07.015$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3548,27922,27923,45993</link.rule.ids></links><search><creatorcontrib>Xie, Chixin</creatorcontrib><creatorcontrib>Zeng, Xingrong</creatorcontrib><creatorcontrib>Fang, Weizhen</creatorcontrib><creatorcontrib>Lai, Xuejun</creatorcontrib><creatorcontrib>Li, Hongqiang</creatorcontrib><title>Effect of alkyl-disubstituted ureido silanes with different alkyl chain structures on tracking resistance property of addition-cure liquid silicone rubber</title><title>Polymer degradation and stability</title><description>Ureido silane is considered to be a novel tracking resistance additive for effectively improving the tracking resistance property of addition-cure liquid silicone rubber (ALSR). In this work, a series of alkyl-disubstituted ureido silanes (ADUSs) with different alkyl chain structures were synthesized by the transetherification of allyl alcohol (AA) and alkyl-disubstituted ureido siloxanes from the nucleophilic addition between alkyl-disubstituted amides and 3-isocyanatopropyltriethoxysilane (ICPES). The effect of ADUSs with different alkyl chain structures on the tracking resistance property of ALSR was investigated by inclined plane test (IPT), thermogravimetry analysis (TGA), thermogravimetry-Fourier transform infrared spectrometry (TG-FTIR) and energy dispersive spectroscopy (EDS). The results showed that ADUSs could effectively improve the tracking resistance property of ALSR, especially for (γ-diisopropylureidopropyl) allyloxyethoxysilane (DIPUPAS), (γ-dibutylureidopropyl) allyloxyethoxysilane (DBUPAS) and (γ-diisobutylureidopropyl) allyloxyethoxysilane (DIBUPAS). ALSR incorporated with DIPUPAS, DBUPAS and DIBUPAS passed the inclined plane test (IPT) at the alternating voltage of 4.5 kV and the average erosion mass was only 3.8%, 3.4% and 4.4% of the virgin ALSR, respectively. TGA and TG-FTIR results revealed that DIPUPAS, DBUPAS and DIBUPAS could also effectively improve the thermal stability of ALSR. Accompanying with the weakened oxidation reactions of methyl groups in molecular chains, the formed cyclic oligomers decreased. Meanwhile, the release of methane and cross-linking reaction of the silicone rubber chains were enhanced, leading to the increase of residue under high temperature and the formation of a ceramic barrier layer to protect the silicone rubber matrix. EDS results showed that the carbon content in ceramic barrier layer decreased, which was beneficial to prohibit the development of tracking.</description><subject>Addition-cure liquid silicone rubber</subject><subject>Additives</subject><subject>Alkyl-disubstituted ureido silane</subject><subject>Amides</subject><subject>Carbon content</subject><subject>Catalytic oxidation</subject><subject>Crosslinking</subject><subject>Cyclic oligomers</subject><subject>Erosion</subject><subject>Erosion resistance</subject><subject>Fourier transforms</subject><subject>Infrared analysis</subject><subject>Infrared spectroscopy</subject><subject>Molecular chains</subject><subject>Oligomers</subject><subject>Oxidation</subject><subject>Rubber</subject><subject>Silanes</subject><subject>Silicone rubber</subject><subject>Silicones</subject><subject>Siloxanes</subject><subject>Studies</subject><subject>Thermal stability</subject><subject>Thermogravimetry</subject><subject>Tracking</subject><subject>Tracking resistance</subject><issn>0141-3910</issn><issn>1873-2321</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNqNkcFq3DAQhkVoodu07yAIPXqjsWzLe-ihhDQNBHJJz0KWRslsHGkjyS37Kn3ayt2eeqoYEIL_n280P2OfQGxBwHC53x7ifHxx-JiMy8VM21aA2opa0J-xDYxKNq1s4Q3bCOigkTsQ79j7nPeinq6HDft17T3awqPnZn4-zo2jvEy5UFkKOr4kJBd5ptkEzPwnlSfuqFoShnJycPtkKPBc0mJL1WceAy_J2GcKj7y-qY4WLPJDigdM5fiH5RwViqGx1cFnel3IrRSyMSBPyzRh-sDeejNn_Pj3Pmffv14_XH1r7u5vbq--3DVWDlAa1StvsR2F8pNTvZejG4TvRzRdZ0YY1lUJpXbKghkmqRBahaO0iEJCr3p5zi5OfeuArwvmovdxSaEiNez6oRs7IYaq-nxS2RRzTuj1IdGLSUcNQq8Mvdf_xKHXOLSoBSvl5uTH-pUfhElnS1j34ijVALSL9J-dfgNPKqF_</recordid><startdate>201708</startdate><enddate>201708</enddate><creator>Xie, Chixin</creator><creator>Zeng, Xingrong</creator><creator>Fang, Weizhen</creator><creator>Lai, Xuejun</creator><creator>Li, Hongqiang</creator><general>Elsevier Ltd</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>201708</creationdate><title>Effect of alkyl-disubstituted ureido silanes with different alkyl chain structures on tracking resistance property of addition-cure liquid silicone rubber</title><author>Xie, Chixin ; Zeng, Xingrong ; Fang, Weizhen ; Lai, Xuejun ; Li, Hongqiang</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c361t-757fce2807fbd75f38d60f58ea44a816101607797c1a6b37e127e83cee0315753</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Addition-cure liquid silicone rubber</topic><topic>Additives</topic><topic>Alkyl-disubstituted ureido silane</topic><topic>Amides</topic><topic>Carbon content</topic><topic>Catalytic oxidation</topic><topic>Crosslinking</topic><topic>Cyclic oligomers</topic><topic>Erosion</topic><topic>Erosion resistance</topic><topic>Fourier transforms</topic><topic>Infrared analysis</topic><topic>Infrared spectroscopy</topic><topic>Molecular chains</topic><topic>Oligomers</topic><topic>Oxidation</topic><topic>Rubber</topic><topic>Silanes</topic><topic>Silicone rubber</topic><topic>Silicones</topic><topic>Siloxanes</topic><topic>Studies</topic><topic>Thermal stability</topic><topic>Thermogravimetry</topic><topic>Tracking</topic><topic>Tracking resistance</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Xie, Chixin</creatorcontrib><creatorcontrib>Zeng, Xingrong</creatorcontrib><creatorcontrib>Fang, Weizhen</creatorcontrib><creatorcontrib>Lai, Xuejun</creatorcontrib><creatorcontrib>Li, Hongqiang</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Polymer degradation and stability</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Xie, Chixin</au><au>Zeng, Xingrong</au><au>Fang, Weizhen</au><au>Lai, Xuejun</au><au>Li, Hongqiang</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of alkyl-disubstituted ureido silanes with different alkyl chain structures on tracking resistance property of addition-cure liquid silicone rubber</atitle><jtitle>Polymer degradation and stability</jtitle><date>2017-08</date><risdate>2017</risdate><volume>142</volume><spage>263</spage><epage>272</epage><pages>263-272</pages><issn>0141-3910</issn><eissn>1873-2321</eissn><abstract>Ureido silane is considered to be a novel tracking resistance additive for effectively improving the tracking resistance property of addition-cure liquid silicone rubber (ALSR). In this work, a series of alkyl-disubstituted ureido silanes (ADUSs) with different alkyl chain structures were synthesized by the transetherification of allyl alcohol (AA) and alkyl-disubstituted ureido siloxanes from the nucleophilic addition between alkyl-disubstituted amides and 3-isocyanatopropyltriethoxysilane (ICPES). The effect of ADUSs with different alkyl chain structures on the tracking resistance property of ALSR was investigated by inclined plane test (IPT), thermogravimetry analysis (TGA), thermogravimetry-Fourier transform infrared spectrometry (TG-FTIR) and energy dispersive spectroscopy (EDS). The results showed that ADUSs could effectively improve the tracking resistance property of ALSR, especially for (γ-diisopropylureidopropyl) allyloxyethoxysilane (DIPUPAS), (γ-dibutylureidopropyl) allyloxyethoxysilane (DBUPAS) and (γ-diisobutylureidopropyl) allyloxyethoxysilane (DIBUPAS). ALSR incorporated with DIPUPAS, DBUPAS and DIBUPAS passed the inclined plane test (IPT) at the alternating voltage of 4.5 kV and the average erosion mass was only 3.8%, 3.4% and 4.4% of the virgin ALSR, respectively. TGA and TG-FTIR results revealed that DIPUPAS, DBUPAS and DIBUPAS could also effectively improve the thermal stability of ALSR. Accompanying with the weakened oxidation reactions of methyl groups in molecular chains, the formed cyclic oligomers decreased. Meanwhile, the release of methane and cross-linking reaction of the silicone rubber chains were enhanced, leading to the increase of residue under high temperature and the formation of a ceramic barrier layer to protect the silicone rubber matrix. EDS results showed that the carbon content in ceramic barrier layer decreased, which was beneficial to prohibit the development of tracking.</abstract><cop>London</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.polymdegradstab.2017.07.015</doi><tpages>10</tpages></addata></record> |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Addition-cure liquid silicone rubber Additives Alkyl-disubstituted ureido silane Amides Carbon content Catalytic oxidation Crosslinking Cyclic oligomers Erosion Erosion resistance Fourier transforms Infrared analysis Infrared spectroscopy Molecular chains Oligomers Oxidation Rubber Silanes Silicone rubber Silicones Siloxanes Studies Thermal stability Thermogravimetry Tracking Tracking resistance |
| title | Effect of alkyl-disubstituted ureido silanes with different alkyl chain structures on tracking resistance property of addition-cure liquid silicone rubber |
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