PERFORMANCE IMPROVEMENT OF RUBBER-MODIFIED POLYBENZOXAZINE

Authors
Citation
J. Jang et D. Seo, PERFORMANCE IMPROVEMENT OF RUBBER-MODIFIED POLYBENZOXAZINE, Journal of applied polymer science, 67(1), 1998, pp. 1-10
Citations number
16
Categorie Soggetti
Polymer Sciences
ISSN journal
00218995
Volume
67
Issue
1
Year of publication
1998
Pages
1 - 10
Database
ISI
SICI code
0021-8995(1998)67:1<1:PIORP>2.0.ZU;2-I
Abstract
Polybenzoxazine as a noble phenolic resin was modified with amine-term inated butadiene acrylronitrile rubber (ATBN) and with carboxyl-termin ated butadiene acrylronitrile rubber (CTBN) in order to improve its me chanical properties. The fracture toughness, flexural modulus, and fle xural strength of rubber-modified polybenzoxazine were measured to inv estigate the effect of rubber modification. In fracture toughness, ATB N is more effective than CTBN. ATBN-modified polybenzoxazine showed be tter distribution of rubber particles in matrix phase than did CTBN-mo dified polybenzoxazine. The cure rates in these systems were monitored by differential scanning calorimetry to investigate the effect of cur e rate on rubber size. The change of glass transition temperatures of rubber-modified polybenzoxazine was measured with a dynamic mechanical thermal analyzer to explain the Variation of mechanical properties. I n addition, the relationship between mechanical properties and the mor phology of rubber-modified polybenzoxazines was also undertaken. (C) 1 998 John Wiley & Sons, Inc.