Processing and Dynamic Failure Characterization of Novel Impact Absorbing Transparent Interpenetrating Polymer Networks (t-IPN)
Abstract
Interpenetrating polymer network (IPN) materials were synthesized with polyurethane (PU) and methacrylate-based polymers in order to create a transparent stock with high toughness for potential applications in impact loading scenarios. This research consisted of four parts with the first involving successful synthesis of an IPN based on PU and poly(methyl methacrylate) (PMMA) with different experimental parameters. Aspects studied included the following: aliphatic versus aromatic isocyanates in the PU phase, the presence of an inhibitor in the PMMA phase (sequential versus simultaneous reactions), curing profiles, and ratios of PU: PMMA. Samples which included an aliphatic isocyanate and a sequential polymerization demonstrated the best material properties due to increased optical transparency and phase compatibility between PU and PMMA. IPNs with PMMA as the stiff phase and PU as the ductile phase with varying PMMA:PU ratios in the range of 90:10 to 70:30 were mechanically characterized. Static tensile and fracture tests indicate significant failure strain and crack initiation toughness.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 05, 2013
- Accession Number
- ADA587367
Entities
People
- Hareesh V. Tippur
- Maria L. Auad
Organizations
- Auburn University