The transamidation reaction converts the carbonate and amine into Naliphatic aromatic carbamate and urea, causing the equivalent of oxirane and amine nonstoichiometric in the primary cure stage. After postcure, the substitution reaction takes place and results in a more tightly crosslinked structure
Chemical reactions, thermal and mechanical properties of epoxy — Polycarbonate blends cured with aromatic amines
✍ Scribed by Jyh-Luen Chen; Ming-Shiu Lu; Hui-Min Huang; Feng-Chih Chang
- Publisher
- Springer
- Year
- 1996
- Tongue
- English
- Weight
- 480 KB
- Volume
- 3
- Category
- Article
- ISSN
- 1022-9760
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Reaction mechanism of the PC-epoxy blends cured by aliphatic amine has been investigated by varying PC contents in the blends. The transamidation reaction tends to convert nearly all the carbonates into N-aliphatic aromatic carbamates even at ambient temperature before normal curing. The remaining a
The epoxy resin containing a typical mesogenic group such as biphenol was cured with catechol novolak and aromatic diamines which have neighboring active hydrogens. In the biphenol-type epoxy resin cured with catechol novolak, 4,4-diaminodiphenylmethane, and p-phenylenediamine (PPD), the glass-rubbe
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