Interpenetrating polymer networks of bismaleimide and polyether polyurethane–crosslinked epoxy

✍ Scribed by J. L. Han; K. Y. Li

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 336 KB
• Volume: 70
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19981226)70:13<2635::aid-app9>3.0.co;2-n

✦ Synopsis

In this work, we prepared the interpenetrating polymer networks of bismaleimide and polyether-type polyurethane(polyoxypropylene)-crosslinked epoxy (BMI/PU(PPG)-EP IPNs) by employing the simultaneous bulk polymerization technique. The polyurethane (PU)-crosslinked epoxy was identified via infrared (IR) spectra analysis. Also investigated herein were the mechanical properties, including tensile strength, Izod impact strength, and fracture energy (G IC ) of the IPNs with various BMI contents in PU-crosslinked epoxy matrix. In addition, differential scanning calorimetry (DSC) analysis and the thermogravimetric analysis (TGA) were performed to examine the thermal properties of the BMI/PU(PPG)-EP IPNs. In addition, morphology and dynamic mechanical analysis (DMA) of the BMI/PU(PPG)-EP IPNs were also studied.