UNIVERSI
TÄ
TS-
BIBLIOTHEK
P
ADERBORN
Anmelden
Menü
Menü
Start
Hilfe
Blog
Weitere Dienste
Neuerwerbungslisten
Fachsystematik Bücher
Erwerbungsvorschlag
Bestellung aus dem Magazin
Fernleihe
Einstellungen
Sprache
Deutsch
Deutsch
Englisch
Farbschema
Hell
Dunkel
Automatisch
Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist
gegebenenfalls
nur via VPN oder Shibboleth (DFN-AAI) möglich.
mehr Informationen...
Universitätsbibliothek
Katalog
Suche
Details
Zur Ergebnisliste
Ergebnis 9 von 32
Datensatz exportieren als...
BibTeX
Synthesis, properties and pyrolysis of siloxane- and imide-modified epoxy resin cured with siloxane-containing dianhydride
Polymer international, 2005-10, Vol.54 (10), p.1416-1421
Li, Hsun-Tien
Chuang, Hsun-Ren
Wang, Ming-Wei
Lin, Mu-Shih
2005
Details
Autor(en) / Beteiligte
Li, Hsun-Tien
Chuang, Hsun-Ren
Wang, Ming-Wei
Lin, Mu-Shih
Titel
Synthesis, properties and pyrolysis of siloxane- and imide-modified epoxy resin cured with siloxane-containing dianhydride
Ist Teil von
Polymer international, 2005-10, Vol.54 (10), p.1416-1421
Ort / Verlag
Chichester, UK: John Wiley & Sons, Ltd
Erscheinungsjahr
2005
Link zum Volltext
Quelle
Wiley Online Library
Beschreibungen/Notizen
Hydrosilylation of nadic anhydride with tetramethyl disiloxane yielded 5,5′‐(1,1,3,3‐tetramethyl disiloxane‐1,3‐diyl)‐bis‐norborane‐2,3‐dicarboxylic anhydride (I), which further reacted with 4‐aminophenol to give N,N′‐bis(4‐hydroxyphenyl)‐5,5′‐bis‐(1,1,3,3‐tetramethyl disiloxane‐1,3‐diyl)‐bis‐norborane‐2,3‐dicarboximide (II). Epoxidation of II with excess epichlorohydrin formed a siloxane‐ and imide‐modified epoxy oligomer (ie diglycidyl ether of N,N′‐bis(4‐hydroxyphenyl)‐5,5′‐bis(1,1,3,3‐tetramethyl disiloxane‐1,3‐diyl)‐bis‐norborane‐2,3‐dicarboximide) (III). Equivalent ratios of III/I of 1/1 and 1/0.8 were prepared and cured to produce crosslinked materials. Thermal mechanical and dynamic mechanical properties were investigated by TMA and DMA, respectively. It was noted that each of these two materials showed a glass transition temperature (Tg) higher than 160 °C with moderate moduli. The thermal degradation kinetics was studied with dynamic thermogravimetric analysis (TGA) and the estimated apparent activation energies were 111.4 kJ mol−1 (in N2), 117.1 kJ mol−1 (in air) for III/I = 1/0.8, and 149.2 kJ mol−1 (in N2), 147.6 kJ mol−1 (in air) for III/I = 1/1. The white flaky residue of the TGA char was confirmed to be silicon dioxide, which formed a barrier at the surface of the polymer matrix and, in part, accounted for the unique heat resistance of this material. Copyright © 2005 Society of Chemical Industry
Sprache
Englisch
Identifikatoren
ISSN: 0959-8103
eISSN: 1097-0126
DOI: 10.1002/pi.1863
Titel-ID: cdi_proquest_miscellaneous_28596795
Format
–
Schlagworte
apparent activation energy
,
Applied sciences
,
Chemical properties
,
crosslinking
,
dynamic mechanical properties
,
Exact sciences and technology
,
Polymer industry, paints, wood
,
Properties and testing
,
siloxane- and imide-modified epoxy oligomer
,
SiO2 char residual
,
Technology of polymers
,
thermal degradation kinetics
Weiterführende Literatur
Empfehlungen zum selben Thema automatisch vorgeschlagen von
bX