Bitte benutzen Sie diese Referenz, um auf diese Ressource zu verweisen: doi:10.22028/D291-24596
Titel: Aqueous sol-gel derived nanocomposite coating materials
Verfasser: Schmidt, Helmut K.
Schirra, Hermann
Jonschker, Gerhard
Sepeur, Stefan
Arpac, Ertugrul
Sprache: Englisch
Erscheinungsjahr: 1998
Quelle: Organic, inorganic hybrid materials : symposium held April 13-17, 1998, San Francisco, California, U.S.A. / eds: Richard M. Laine ... - Warrendale, PA : Materials Research Society, 1998. — (Materials Research Society symposia proceedings ; 519), S. 297-308
SWD-Schlagwörter: Sol-Gel-Verfahren
Lösungsmittel
Organisches Lösungsmittel
Wässriges Lösungsmittel
Hydrolyse
Kondensation
Ausgangsmaterial
DDC-Sachgruppe: 620 Ingenieurwissenschaften und Maschinenbau
Dokumentart : InProceedings (Aufsatz / Paper einer Konferenz etc.)
Kurzfassung: Sol-gel reactions, in general, have to take place in organic solvents in order to control the hydrolysis and condensation reaction. This leads to drawbacks in applications, since the organic solvent vapor concnetration has to be controlled for example in ocoating applications for environmental, health or security reasons. For this reason, a reaction route has been developed to produce coating precursors stable against water as solvent. To achieve this, conventional electrostatically stabilized sols obtained either by hydrolysis and condensation or commercially availabe sols (e.g. SiO2 sols) have been surface modified to reduce the particle-to-particle interaction and electrosterically stabilized precursors compatible to water have been obtained. By use of alkoxy silanes as surface modifiers, water-dispersable nanoparticulate liquid coating systems have been prepared, for example, with boehmite, SiO2 or TiO2 as nanoparticles to be crosslinked after coating thermally by inorganic condensation and organic condensation or polymerization reactions. Thus, aqueous sol-gel coating systems have been prepared with EtOH contents below 5%. In the paper, the basic reaction as well as material properties will be discussed.
Link zu diesem Datensatz: urn:nbn:de:bsz:291-scidok-29059
hdl:20.500.11880/24652
http://dx.doi.org/10.22028/D291-24596
ISBN der Druckausgabe: 1-558-99425-4
SciDok-Publikation: 18-Jun-2010
Fakultät: Sonstige Einrichtungen
Fachrichtung: SE - INM Leibniz-Institut für Neue Materialien
Fakultät / Institution:INM
SE - Sonstige Einrichtungen

Dateien zu dieser Ressource:
Datei Beschreibung GrößeFormat 
sm199821.pdf853,89 kBAdobe PDFÖffnen/Anzeigen


Alle Ressourcen in diesem Repository sind urheberrechtlich geschützt.