Damping properties of epoxy resin/polyurethane (EP/PU) semi-interpenetrating polymer networks (IPNs) were studied by the dynamic mechanical analysis (DMA) method. It shows that the semi-IPNs have excellent damping properties at ordinary temperature. The maximum value of tan 6 is about 1 when the wei
Studies on engineering properties of PVC–PMMA semi-interpenetrating polymer networks
✍ Scribed by Rupa Chakrabarti; Debabrata Chakraborty
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 370 KB
- Volume
- 97
- Category
- Article
- ISSN
- 0021-8995
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Semi-interpenetrating polymer networks (semi-IPNs) were prepared from linear polyurethane (PUR) and polycyanurate (PCN) networks. Wide-angle X-ray scattering measurements showed that the IPNs were amorphous, and differential scanning calorimetry and small-angle X-ray scattering measurements suggeste
Epoxy resin-acrylated polyurethane semi-interpenetrating polymer networks (semi-IPNs) were synthesized containing various ratios of the diglycidyl ether of bisphenol-A (DGEBA)-based epoxy resin and an acrylated aliphatic urethane oligomer. The synthesis was carried out in the presence of a mixture o
The epoxy resin/polyurethane semi-IPN was prepared and the glass transition behavior of the semi-IPN was discussed with DSC and DMA methods. The results show that the two glass transition temperatures (T,) referring to epoxy resin and polyurethane respectively get closer. Between the two T, there ex