Abstract
The effect of aminosiloxane modifier on the chemorheological properties of ortho-cresol novolac epoxy/phenol novolac/triphenylphosphine resin system was investigated at different isothermal curing temperatures. By adding the aminosiloxane to the resin system, not only conversion rate and conversion were increased but also glass transition temperature was promoted. Critical conversion and gelation time obtained at the crossover point between storage and loss moduli were reduced and thus the viscosity was increased by the aminosiloxane. C 1 and C 2 in the WLF equation calculated from the glass transition temperature as a function of conversion and measured viscosity were found to vary with the curing temperature. By applying the change of glass transition temperature with conversion, C 1 and C 2 to WLF equation, it was possible to predict accurately the viscosity change with isothermal curing reaction.
| Original language | English |
|---|---|
| Pages (from-to) | 88-97 |
| Number of pages | 10 |
| Journal | Polymer (Korea) |
| Volume | 26 |
| Issue number | 1 |
| Publication status | Published - 2002 Jan |
Keywords
- Aminosiloxane
- Chemorheology
- Curing reaction
- Glass transition temperature
- Modified WLF equation
- Ortho-cresol novolac epoxy
ASJC Scopus subject areas
- Chemical Engineering(all)
- Polymers and Plastics
- Materials Chemistry