Telechelic Aryl Cyanate Ester Siloxanes as Low Flammability Impact Modifiers for Cyanate Ester Resins.
Telechelic Aryl Cyanate Ester Siloxanes as Low
Flammability Impact Modifiers for Cyanate Ester Resins.
Pollack, S. K.; Bullen, Y.; Fu, Z.
NISTIR 6242; October 1998.
National Institute of Standards and Technology. Annual
Conference on Fire Research: Book of Abstracts.
November 2-5, 1998, Gaithersburg, MD, Beall, K. A.,
Editor(s), 45-46 pp, 1998.
Sponsor:National Institute of Standards and Technology,
Available from: National Technical Information Service
Order number: PB99-102519
fire research; fire science; fire suppression; resins;
esters; thermal stability; polymerization
Cyanate ester resins (CERs) have found extensive use in
applications where low-dielectric, high thermal
stability materials are needed. Polymerization occurs
by the cyclotrimerization of aryl cyante ester groups.
These applications include printed wire circuit boards
(PCWBs) and radomes. Recently, these resins have been
proposed as materials for use as the matrix in
structural composites used in civilian air transport.
In this application, the organic materials must exhibit
low flammability as well as having the appropriate
strength and toughness for this type of application.
CERs, by themselves possess appropriate flammability
properties, but are too brittle for use alone as matrix
materials for structure composites. However, their
toughness can be greatly enhanced by the introduction of
modifiers such as thermoplastics or elastomers.
Siloxane based elastomers provide both the requisite
improvement in toughness as well as having excellent