✦ LIBER ✦

Processability and properties of phenoxy resin toughened phenolic resin composites

✍ Scribed by Hew-Der Wu; Chen-Chi M. Ma; Jia-Min Lin

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 238 KB
Volume: 63
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19970214)63:7<911::aid-app11>3.0.co;2-u

No coin nor oath required. For personal study only.

✦ Synopsis

A novel method has been developed to toughen phenolic resin using phenoxy resin. Phenoxy resin was dissolved in phenol to form a glutinous mixture at 110ЊC, and an acid catalyst ( p-toluene sulfonic acid, PTSA) was utilized to reduce the viscosity of mixture. The mixture was blended with resole-type phenolic resin.

IR spectra confirmed that the amount and strength of hydrogen bonds increased with PTSA content, and the viscosity decreased with PTSA content in the polymer blends.

The wet-out of glass fiber by modified resin was improved. The flexural and notched Izod impact strength of the polymer-blend composites increased significantly.

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