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Challenges in the Scaled-up Synthesis of Carbon Aerogel Granulate for Foundry Application

Heinrich, Charlotte und Ignatzi, Benjamin und Probst, Rebekka und Milow, Barbara (2020) Challenges in the Scaled-up Synthesis of Carbon Aerogel Granulate for Foundry Application. Online Aerogel Seminar 2020, 2020-09-16 - 2020-09-18, Online (Hamburg, Deutschland).

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Kurzfassung

A lot of industrial partners are very interested in exploring new opportunities for the application of aerogel materials. Often tests on an industrial scale are hindered by the lack of large material quantities since scaled-up synthesis has been insufficiently studied so far. Our developments focus on the synthesis of carbon (C) aerogel granulate that is used as functional sand core additives for foundry industry to eliminate casting defects, decrease casting rejection and lower the emission of BTXE gases during casting. C aerogels can be prepared by pyrolysis of organic aerogels like e.g. resorcinol-formaldehyde (RF) aerogels in a furnace under inert gas at elevated temperatures. RF aerogel synthesis takes place in a three-step process consisting of sol-gel reaction, ageing of the gel and drying. In the drying step, the solvent is removed completely from the gel while maintaining the porous network structure. For the use as additives for foundry applications, aerogel granulate of defined grain size is required according to safety regulations and for better handling. Therefore, monolithic aerogels have to be ground and screened prior to application. We address the challenges of transferring the synthesis of C aerogel granulate from laboratory to pilot plant scale production. Our batch production yields about 15 kilogram of RF aerogel, considering the low density of 0.31 g/cm³ this equals 48 L. Further processing includes granulation and carbonization, elevating the level of development with respect to foundry needs. Product quality was determined by measuring density, surface area, particle size distribution and micro-structural appearance in SEM pictures. Practical applicability of the C aerogel granulate has been tested in a demanding case of iron casting.

elib-URL des Eintrags:https://elib.dlr.de/136182/
Dokumentart:Konferenzbeitrag (Poster)
Titel:Challenges in the Scaled-up Synthesis of Carbon Aerogel Granulate for Foundry Application
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Heinrich, CharlotteCharlotte.Heinrich (at) dlr.dehttps://orcid.org/0000-0002-8970-9598NICHT SPEZIFIZIERT
Ignatzi, Benjaminbenjamin.ignatzi (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Probst, RebekkaRebekka.Probst (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Milow, BarbaraBarbara.Milow (at) dlr.dehttps://orcid.org/0000-0002-6350-7728NICHT SPEZIFIZIERT
Datum:September 2020
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:resorcinol-formaldehyde carbon aerogel scale-up up-scaling foundry application
Veranstaltungstitel:Online Aerogel Seminar 2020
Veranstaltungsort:Online (Hamburg, Deutschland)
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:16 September 2020
Veranstaltungsende:18 September 2020
Veranstalter :Technische Universität Hamburg (TUHH)
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Verkehr
HGF - Programmthema:Straßenverkehr
DLR - Schwerpunkt:Verkehr
DLR - Forschungsgebiet:V ST Straßenverkehr
DLR - Teilgebiet (Projekt, Vorhaben):V - NGC Fahrzeugstruktur II (alt)
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Werkstoff-Forschung > Aerogele und Aerogelverbundwerkstoffe
Hinterlegt von: Heinrich, Dr. Charlotte
Hinterlegt am:19 Okt 2020 09:56
Letzte Änderung:24 Apr 2024 20:38

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