The curing reaction of four synthezized and five commercial unsaturated polyester resins were characterized by low-resolution pulse 1 H-NMR and rheological measurements. The rheological measurements were done both by steady shearing flow and oscillatory shearing flow measurements. For the synthesize
Effect of crosslinking density on the viscoelastic properties of unsaturated polyesters
β Scribed by Shibayama, K. ;Suzuki, Y.
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1965
- Tongue
- English
- Weight
- 605 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0449-2951
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The change of the viscoelastic behavior of an unsaturated polyester resin during curing was followed by a vibrometric technique, while the portion converted to gel in applied films was also determined by means of extraction with a solvent. Some relationship between the viscoelastic properties and th
## Abstract Unsaturated polyesters have been synthesised and modified to determine the effect of numberβaverage molecular weight (MΜ~n~) and molecular weight distribution (MWD) on the following properties of the polyesters after crosslinking with styrene: (i) water absorption, (ii) initial mechanic
The viscoelastic properties of various crosslinked natural rubbers, NR, were investigated by mechanical spectroscopy. The glass transition temperature, T,, was found to be dependent on both the crosslink density and the crosslink type. Higher values of Tg were obtained for sulfur-crosslinked NR than