Photo‐oxidation and photoprotection of the surface resin of a glass fiber–epoxy composite
- 1 August 1977
- journal article
- research article
- Published by Wiley in Journal of Applied Polymer Science
- Vol. 21 (8), 2241-2251
- https://doi.org/10.1002/app.1977.070210821
Abstract
The rapid photo‐oxidation of the surface epoxy resin of a commercial seven‐ply laminate (Scotchply 1009‐26) is due principally to the epoxy novolac resin component. The photo‐oxidation rate of this resin is eight times that of the other component, a bisphenol A epoxy resin. This rate depends on the conditions of cure, and photo‐initiation occurs in part through aromatic carbonyl groups formed by oxidation of the methylene linkages of the novolac at the cure temperature (160–180°C). Inhibition of this thermal oxidation by vacuum cure or a chain‐terminating antioxidant increases the photostability. Photoprotection of thin resin sections by the UV stabilizer 2‐hydroxy‐4‐isooctoxybenzophenone and an epoxidized analog is assessed.This publication has 6 references indexed in Scilit:
- Photodegradation and stabilization of commercial polyolefinsChemical Society Reviews, 1975
- Laser pyrolysis—gas chromatographic—mass spectrometric analysis of polymeric materialsJournal of Chromatography A, 1974
- Fractionation of linear and branched polycaprolactam by coacervate extractionEuropean Polymer Journal, 1969
- THE AVAILABILITY OF SOLAR RADIATION BELOW 290 nm AND ITS IMPORTANCE IN PHOTOMODIFICATION OF POLYMERSPhotochemistry and Photobiology, 1968
- Oxidative degradation of polybenzylJournal of Applied Polymer Science, 1965
- A study of the oxidative degradation of phenol-formaldehyde polycondensates using infrared spectroscopyJournal of Applied Polymer Science, 1963