Effect of PEGDE addition on rheological and mechanical properties of bisphenol E cyanate ester

Cyanate esters are a group of resins with exceptional thermal and mechanical properties and are often blended with lower cost epoxy resins. These blends are often brittle, and a toughening method, such as the addition of soft segments, is necessary. Poly(ethylene glycol) diglycidyl ether, or PEGDE,...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied polymer science 2013-10, Vol.130 (1), p.463-469
Main Authors: Sheng, Xia, Hanus, Riley, Bauer, Amy, Kessler, Michael R.
Format: Article
Language:English
Subjects:
Applied sciences
Bisphenols
Blends
Chemical properties
Cyanates
Esters
Exact sciences and technology
Gelation
glass transition
Materials science
Mechanical properties
Polymer industry, paints, wood
Polymers
Properties and testing
resins
Rheological properties
Technology of polymers
thermosets
Toughening
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Cyanate esters are a group of resins with exceptional thermal and mechanical properties and are often blended with lower cost epoxy resins. These blends are often brittle, and a toughening method, such as the addition of soft segments, is necessary. Poly(ethylene glycol) diglycidyl ether, or PEGDE, was added to bisphenol E cyanate ester as a toughening agent. PEGDE was added at loadings of 0–30 wt %, and rheological and mechanical properties were analyzed after curing. As PEGDE loading was increased, the gel point increased accordingly while the activation energy of gelation decreased, indicating PEGDE accelerated the gelation process. Dynamic mechanical analysis results indicated a decrease in glass transition temperature as the PEGDE loading increased. Three‐point bending tests yielded similar toughness to the neat BECy at low PEGDE loadings, with a dramatic increase at loadings of 25 and 30 wt % PEGDE. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
ISSN:0021-8995
1097-4628
DOI:10.1002/app.39118