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Advanced Opacified Fiber-Reinforced Silica-Based Aerogel Composites for Superinsulation of Exhaust Tubing Systems in Semi-Stationary Motors

Heyer, Markus and Berkefeld, Andre and Voepel, Pascal and Milow, Barbara (2020) Advanced Opacified Fiber-Reinforced Silica-Based Aerogel Composites for Superinsulation of Exhaust Tubing Systems in Semi-Stationary Motors. Materials, 13, p. 2677. Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/ma13122677. ISSN 1996-1944.

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Official URL: https://www.mdpi.com/1996-1944/13/12/2677

Abstract

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 halfshell for pipe insulation is characterized under real conditions.

Item URL in elib:https://elib.dlr.de/135296/
Document Type:Article
Title:Advanced Opacified Fiber-Reinforced Silica-Based Aerogel Composites for Superinsulation of Exhaust Tubing Systems in Semi-Stationary Motors
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Heyer, Markusmarkus.heyer (at) dlr.dehttps://orcid.org/0000-0002-5180-0695
Berkefeld, AndreUNSPECIFIEDUNSPECIFIED
Voepel, Pascalpascal.voepel (at) dlr.dehttps://orcid.org/0000-0001-8233-7261
Milow, BarbaraBarbara.Milow (at) dlr.dehttps://orcid.org/0000-0002-6350-7728
Date:12 June 2020
Journal or Publication Title:Materials
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:13
DOI :10.3390/ma13122677
Page Range:p. 2677
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
ISSN:1996-1944
Status:Published
Keywords:silica aerogel; fiber reinforcement; opacifiers; super insulation; boehmite particles; high temperature; generic part; manufacturing
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: Vöpel, Dr. Pascal
Deposited On:19 Oct 2020 09:47
Last Modified:19 Oct 2020 09:47

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