Theoretical and experimental conversion in the curing of unsaturated polyester resins with styrene as a crosslinking agent
✍ Scribed by X. Ramis; J. M. Salla
- Publisher
- John Wiley and Sons
- Year
- 1992
- Tongue
- English
- Weight
- 567 KB
- Volume
- 45
- Category
- Article
- ISSN
- 0021-8995
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✦ Synopsis
The reaction of unsaturated polyester resin is a free radical copolymerization between the styrene monomer and the unsaturated polyester. Depending on the temperature and other processing conditions, some of the reacting molecular species remain, after curing, in the form of residual monomer and soluble polymer that do not contribute to the network structure. By means of DSC and gel permeation chromatography (G.P.C.) techniques, we have investigated the differences between theoretical and experimental reaction heats of unsaturated polyester samples with different styrene/polyester ratios, the residual species formed, and the conversion of reactive groups.