Abstract
The mechanisms of chemical modification of diglycidyl ether of a bisphenol A (DGEBA) epoxy resin modified with a methoxyl-terminated polymethylphenyl siloxane oligomer were characterized by Fourier Transform Infrared Spectroscopy, Thin Layer Chromatography, and Epoxy Equivalent Weight measurements. The curing behavior, the thermal and mechanical properties of the modified epoxy resins cured with meta-phenylenediamine were investigated as a function of the weight concentration of siloxane modifier. The activation energy and frequency factors were dependent on the siloxane content. For modified epoxy resins, an enhancement in thermal stability and the flexural and the tensile strength were observed, and the overall toughness was increased by three to four fold. The glass transition temperature and the flexural moduli of cured samples showed a decrease with an increase in the siloxane content.
| Original language | English (US) |
|---|---|
| Pages | 1881-1885 |
| Number of pages | 5 |
| State | Published - 2003 |
| Event | 61st Annual Technical Conference ANTEC 2003 - Nashville, TN, United States Duration: May 4 2003 → May 8 2003 |
Other
| Other | 61st Annual Technical Conference ANTEC 2003 |
|---|---|
| Country/Territory | United States |
| City | Nashville, TN |
| Period | 5/4/03 → 5/8/03 |
Keywords
- Epoxy resin
- Siloxane modification
ASJC Scopus subject areas
- General Chemical Engineering
- Polymers and Plastics