Modification of an o-cresol formaldehyde epoxy resin by the thermotropic liquid crystalline polymer

Two novel liquid crystalline polymers, polydiethyleneglycol bis(4‐hydroxybenzoate) terephthaloyl and block copolymer (PDBH), were synthesized by condensation reaction. The blends of the two liquid crystalline polymers and o‐cresol formaldehyde epoxy resin were prepared by linear phenol‐formaldehyde...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied polymer science 2005-08, Vol.97 (4), p.1626-1631
Main Authors: Huang, Zeng Fang, Tan, Song Ting, Wang, Xia Yu
Format: Article
Language:English
Subjects:
Applied sciences
curing kinetics
Exact sciences and technology
liquid crystalline polymer
Mechanical properties
O-cresol formaldehyde epoxy resin
Organic polymers
Physicochemistry of polymers
Properties and characterization
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:Two novel liquid crystalline polymers, polydiethyleneglycol bis(4‐hydroxybenzoate) terephthaloyl and block copolymer (PDBH), were synthesized by condensation reaction. The blends of the two liquid crystalline polymers and o‐cresol formaldehyde epoxy resin were prepared by linear phenol‐formaldehyde resin as curing reagent. Both mechanical and thermal properties of the blends containing liquid crystalline polymer were improved to a certain extent. By adding 5 wt % PDBH, the impact strength, bending strength, and the glass transition temperature were enhanced by 128%, 23.84%, and 28°C, respectively, compared with the unmodified version. The results of curing kinetics showed that the curing reaction active energy of the modified system by PDBH decreased from 79.70 to 70.26 kJ/mol. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 97: 1626–1631, 2005
ISSN:0021-8995
1097-4628
DOI:10.1002/app.21885