Study on the properties and application of epoxy resin/polyurethane semi-interpenetrating polymer networks

✍ Scribed by Ying Li; Sufen Mao

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 284 KB
• Volume: 61
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19960919)61:12<2059::aid-app2>3.0.co;2-9

✦ Synopsis

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 weight composition of EP/PU is 70/30. Tensile tests also indicate that the system has good tensile strength and elongation at break a t this ratio. The effects of structure on the properties of the semi-IPNs are discussed. Applied to the cavitation corrosion resistant coating, the semi-IPNs show good cavitation corrosion resistance.