Advanced Opacified Fiber-Reinforced Silica-Based Aerogel Composites for Superinsulation of Exhaust Tubing Systems in Semi-Stationary Motors
Within this study, monolithic three-dimensional silica aerogel (SA) composite parts with super insulating properties are presented. A generic part based on fiber-reinforced (FR) silica aerogel for thermal insulation of the exhaust tubing system—to keep the exhaust gases as hot as possible to improve...
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| Veröffentlicht in: | Materials 2020-06, Vol.13 (12), p.2677 |
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| creator | Heyer, Markus Berkefeld, André Voepel, Pascal Milow, Barbara |
| description | Within this study, monolithic three-dimensional silica aerogel (SA) composite parts with super insulating properties are presented. A generic part based on fiber-reinforced (FR) silica aerogel for thermal insulation of the exhaust tubing system—to keep the exhaust gases as hot as possible to improve the efficiency of the catalyst system—was produced via a sol-gel-based molding process in combination with a supercritical drying using scCO2. A thermal conductivity of 16 mW m−1 K−1 was measured via a heat flow meter technique. In this manuscript, we present a full cycle of the material compound design, starting with fundamental material evaluation including aerogel optimization, opacifier influence, and casting process. The obtained generic part in shape of a half-shell for pipe insulation is characterized under real conditions. |
| doi_str_mv | 10.3390/ma13122677 |
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A generic part based on fiber-reinforced (FR) silica aerogel for thermal insulation of the exhaust tubing system—to keep the exhaust gases as hot as possible to improve the efficiency of the catalyst system—was produced via a sol-gel-based molding process in combination with a supercritical drying using scCO2. A thermal conductivity of 16 mW m−1 K−1 was measured via a heat flow meter technique. In this manuscript, we present a full cycle of the material compound design, starting with fundamental material evaluation including aerogel optimization, opacifier influence, and casting process. 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The obtained generic part in shape of a half-shell for pipe insulation is characterized under real conditions.</description><subject>Aluminum</subject><subject>Ammonia</subject><subject>Conductivity</subject><subject>Diesel engines</subject><subject>Engines</subject><subject>Exhaust gases</subject><subject>Exhaust systems</subject><subject>Fiber composites</subject><subject>Heat conductivity</subject><subject>Heat transmission</subject><subject>High temperature</subject><subject>Hydrochloric acid</subject><subject>Insulation</subject><subject>Molding (process)</subject><subject>Optimization</subject><subject>Silica aerogels</subject><subject>Silicon dioxide</subject><subject>Sol-gel processes</subject><subject>Thermal conductivity</subject><subject>Thermal insulation</subject><subject>Three dimensional composites</subject><issn>1996-1944</issn><issn>1996-1944</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNpdkV1LHTEQhoO0VFFv-gsCvZHC1nztR24Kpwe1giJ07XXIZmePkd1km2Sl_ob-aXNU_OjczAzz8PIOL0KfKfnGuSTHk6acMlbV9Q7ao1JWBZVCfHgz76LDGG9JLs5pw-QntMtZKUpRyT30b9XfaWegx1ezNnaweTq1HYTiF1g3-LA9tXa0Rhc_dMzLCoLfwIjXfpp9tAkizhhulxmCdXEZdbLeYT_gk783eokJXy-ddRvc3scEU8TW4RYmW7TpkdThHl_65EM8QB8HPUY4fO776PfpyfX6Z3FxdXa-Xl0Uhjc8FT2BftCCyKbpGtY1UlBTl0BKWhINnJMaSCV6A5LqTnTMgDYEBtlUpJJC1nwffX_SnZduggy6FPSo5mCnbEZ5bdX7i7M3auPvVM1FWQmRBY6eBYL_s0BMarLRwDhqB36JigkqBCVClhn98h9665fg8nuPFGUNYVtHX58oE3yMAYYXM5SobczqNWb-APAsmws</recordid><startdate>20200612</startdate><enddate>20200612</enddate><creator>Heyer, Markus</creator><creator>Berkefeld, André</creator><creator>Voepel, Pascal</creator><creator>Milow, Barbara</creator><general>MDPI AG</general><general>MDPI</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KB.</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>7X8</scope><scope>5PM</scope><orcidid>https://orcid.org/0000-0001-8233-7261</orcidid><orcidid>https://orcid.org/0000-0002-6350-7728</orcidid></search><sort><creationdate>20200612</creationdate><title>Advanced Opacified Fiber-Reinforced Silica-Based Aerogel Composites for Superinsulation of Exhaust Tubing Systems in Semi-Stationary Motors</title><author>Heyer, Markus ; 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| subjects | Aluminum Ammonia Conductivity Diesel engines Engines Exhaust gases Exhaust systems Fiber composites Heat conductivity Heat transmission High temperature Hydrochloric acid Insulation Molding (process) Optimization Silica aerogels Silicon dioxide Sol-gel processes Thermal conductivity Thermal insulation Three dimensional composites |
| title | Advanced Opacified Fiber-Reinforced Silica-Based Aerogel Composites for Superinsulation of Exhaust Tubing Systems in Semi-Stationary Motors |
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