期刊
MOLECULES
卷 17, 期 7, 页码 8587-8594出版社
MDPI
DOI: 10.3390/molecules17078587
关键词
epoxy resins; cure kinetics; curing agent; rheological behavior
资金
- NWPU Basic Research Fund [JC201274]
The effect of curing agent (6610) content and temperature on the rheological behavior of the epoxy resin CYD-128 was studied by DSC analysis and viscosity experiments. The results show that the resin system meets the requirements of processing technology. A complete reaction occurs when the curing agent content (40 parts per hundred resin, phr) is a little higher than the theoretical value (33.33 phr), while the degree of reaction of the resin system is reduced when the curing agent content is lower (25.00 phr) than theoretical value. However, excessive curing agent (50.00 phr) results in a lower reaction rate. Curing agent content has little influence on gel time when curing agent content exceeded 33.33 phr and the temperature was less than 70 degrees C. The isothermal viscosity-time curves shift towards the -x axis when the temperature rises from 50 degrees C to 80 degrees C. Meanwhile, higher temperature results in higher reaction rates.
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