Identification and evaluation of progressive thermal degradation caused by carbamate formation in cyanate ester resin-based composites.: An article from: Polymer Engineering and Science
Book Details
Author(s)Rafael J. Zaldivar, James P. Nokes
PublisherSociety of Plastics Engineers, Inc.
ISBN / ASINB004JRW742
ISBN-13978B004JRW749
AvailabilityAvailable for download now
MarketplaceUnited States 🇺🇸
Description
This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on January 1, 2011. The length of the article is 8494 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser.
From the author: The effect of moisture during cure on the mechanical and thermal performance was evaluated for a series of cyanate ester composite laminates. Data presented in our investigation show that the amount of carbamate formation is inversely proportional to the glass transition temperature ([T.sub.g]) of the cured composite and is typically localized on the outer surface plies adjacent the moisture source. Even though the majority of the composite may remains largely unaffected, the [T.sub.g] of the localized areas will show sharp decreases which correlate with strength as verified by flatwise tensile tests. Additionally, our test data show that performing just one [T.sub.g] measurement after cure will not necessarily provide a valid assessment of the state of the composite since additional degradation may occur with subsequent thermal exposure. Accordingly, a second dynamic mechanical analysis (DMA) measurement should be performed after an extended, elevated temperature, post-treatment thereby allowing direct assessment of carbamate degradation. POLYM. ENG. SCI., 51:158-169, 2011. [C] 2010 Society of Plastics Engineers
Citation Details
Title: Identification and evaluation of progressive thermal degradation caused by carbamate formation in cyanate ester resin-based composites.
Author: Rafael J. Zaldivar
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: January 1, 2011
Publisher: Society of Plastics Engineers, Inc.
Volume: 51 Issue: 1 Page: 158(12)
Distributed by Gale, a part of Cengage Learning
From the author: The effect of moisture during cure on the mechanical and thermal performance was evaluated for a series of cyanate ester composite laminates. Data presented in our investigation show that the amount of carbamate formation is inversely proportional to the glass transition temperature ([T.sub.g]) of the cured composite and is typically localized on the outer surface plies adjacent the moisture source. Even though the majority of the composite may remains largely unaffected, the [T.sub.g] of the localized areas will show sharp decreases which correlate with strength as verified by flatwise tensile tests. Additionally, our test data show that performing just one [T.sub.g] measurement after cure will not necessarily provide a valid assessment of the state of the composite since additional degradation may occur with subsequent thermal exposure. Accordingly, a second dynamic mechanical analysis (DMA) measurement should be performed after an extended, elevated temperature, post-treatment thereby allowing direct assessment of carbamate degradation. POLYM. ENG. SCI., 51:158-169, 2011. [C] 2010 Society of Plastics Engineers
Citation Details
Title: Identification and evaluation of progressive thermal degradation caused by carbamate formation in cyanate ester resin-based composites.
Author: Rafael J. Zaldivar
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: January 1, 2011
Publisher: Society of Plastics Engineers, Inc.
Volume: 51 Issue: 1 Page: 158(12)
Distributed by Gale, a part of Cengage Learning
