Abstract
Blends of resole and epoxy were prepared by physical mixing, and cured with 30% polyamide based on blend resin and polyamide. Degradation of each sample was studied by dynamic thermogravimetric analysis in nitrogen atmosphere at a heating rate of 10°C min-1. The degradation of blends of epoxy and resole having 30 wt % polyamide proceeded with 0.50th order. This result was found with the Coats-Redfern equation using best-fit analysis, and further confirmed by linear regression analysis. The validity of data was checked by t test analysis. From this value of reaction order, activation energy (E) and pre-exponential factor (Z) were calculated. The values of activation energy increased, whereas the values of pre-exponential factor decreased as the resole content in the blend decreased from 100 to 0 wt %.
| Original language | English |
|---|---|
| Pages (from-to) | 281-289 |
| Number of pages | 9 |
| Journal | Materials and Manufacturing Processes |
| Volume | 16 |
| Issue number | 2 |
| DOIs | |
| State | Published - 1 Mar 2001 |
| Externally published | Yes |
Keywords
- Activation energy
- Blends
- Coefficient of correlation
- Curing agent
- Degradation
- Degradation kinetics
- Epoxy
- Infrared spectroscopy
- Order of reaction
- Physical mixing
- Pre-exponential factor
- Regression analysis
- Resole
- Thermogravimetric analysis
- t test
ASJC Scopus subject areas
- General Materials Science
- Mechanics of Materials
- Mechanical Engineering
- Industrial and Manufacturing Engineering