elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Synthesis and Characterization of Resorcinol-Formaldehyde (RF) and Carbon Aerogel Microbeads by Dropping Method

Anklam, Thomas (2021) Synthesis and Characterization of Resorcinol-Formaldehyde (RF) and Carbon Aerogel Microbeads by Dropping Method. Master's, Universität zu Köln.

[img] PDF
24MB

Abstract

Resorcinol formaldehyde (RF) aerogel microbeads have been shown to improve the quality of metal castings when mixed with the casting sand. Reports for the production of RF aerogel microbeads mostly involve emulsion gelation methods, which have the disadvantage of a complicated upscaling of the synthesis. Hence, the aim of this work is to investigate the synthesis conditions of RF aerogel microbeads with a dropping method. Xanthan gum (XG) was added to a RF sol to increase its viscosity. A XG containing base-catalyzed pre-gelled sol was then dropped into hydrochloric acid to induce rapid gelation of the droplets. After ambient drying the gels were fully characterized concerning their size, bulk and skeletal densities, porosities, surface area, pore size distribution, IR spectra and microstructure. The here described reaction parameters can in future be transferred to a mechanical JetCutter for easy upscaling of the process.

Item URL in elib:https://elib.dlr.de/146269/
Document Type:Thesis (Master's)
Title:Synthesis and Characterization of Resorcinol-Formaldehyde (RF) and Carbon Aerogel Microbeads by Dropping Method
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Anklam, ThomasThomas.Anklam (at) dlr.dehttps://orcid.org/0000-0002-3192-907X
Date:19 February 2021
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:69
Status:Published
Keywords:Resorcinol-Formaldehyd, Dropping Method, Aerogel, Xanthan Gum
Institution:Universität zu Köln
Department:Institut für Anorganische Chemie
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Road Transport
DLR - Research area:Transport
DLR - Program:V ST Straßenverkehr
DLR - Research theme (Project):V - NGC Fahrzeugstruktur II
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Aerogels and Aerogel Composites
Deposited By: Anklam, Thomas
Deposited On:03 Dec 2021 11:48
Last Modified:31 Dec 2022 03:00

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Website and database design: Copyright © German Aerospace Center (DLR). All rights reserved.