Curing behavior and thermal mechanical properties of cyanate ester blends

Cyanate esters are a class of important thermally resistant polymers. To tailor their processability and thermomechanical properties, a series of cyanate ester blends based on a trifunctional novolac cyanate ester (HF‐5), a difunctional bisphenol E cyanate ester (HF‐9), and a reactive catalyst [2,2′...

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Published inJournal of applied polymer science Vol. 102; no. 5; pp. 4284 - 4290
Main Authors Koh, Henry C. Y., Dai, Jie, Tan, Eileen
Format Journal Article
LanguageEnglish
Published Hoboken Wiley Subscription Services, Inc., A Wiley Company 05.12.2006
Wiley
Subjects
Applied sciences
blends
Chemical properties
curing of polymers
Exact sciences and technology
mechanical properties
Polymer industry, paints, wood
Properties and testing
Technology of polymers
thermal properties
Cyanate resin
Catalytic reaction
curing of polymers
Cyclopolymerization
Thermomechanical properties
Processability
Experimental study
Property processing relationship
Allylic compound
Thermal stability
mechanical properties
Thermal properties
Cyclopolymer
Curing(plastics)
Novolac
Concentration effect
Phenoplasts
Technological properties
Kinetics
blends
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Summary:Cyanate esters are a class of important thermally resistant polymers. To tailor their processability and thermomechanical properties, a series of cyanate ester blends based on a trifunctional novolac cyanate ester (HF‐5), a difunctional bisphenol E cyanate ester (HF‐9), and a reactive catalyst [2,2′‐diallyl bisphenol A (DBA)] were formulated. The effect of the blend composition on the rheology and curing behavior of these cyanate ester blends and the corresponding thermal and mechanical properties of the cured cyanate ester blends was studied. The results showed that HF‐5 contributed to good mechanical property retention at high temperatures because of its trifunctionality, whereas HF‐9 imparted processability by reducing the viscosity and extending the pot life of the formulated cyanate ester blends at the processing temperature. On the basis of the results, an optimal cyanate ester blend suitable for resin transfer molding was determined: the HF‐5/HF‐9/DBA weight ratio of 80 : 15 : 5 exhibited good processability and thermomechanical properties. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 4284–4290, 2006
Bibliography:ark:/67375/WNG-2JRFG1KZ-L
istex:C9B70C874E6E982CD13FFAD0D91B55F20C8E035B
ArticleID:APP24831
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0021-8995
1097-4628
DOI:10.1002/app.24831