Role of amines in microstructure tuning for synergistic damping and mechanical properties in epoxy resins

High-Performance Branched Polymer Elastomer Based on a Topological Network Structure and Dynamic Bonding

“…The damping factor of polyurethane with the gradient distribution of dangling chains in the range of −44–100 °C noticeably exceeds 0.4. To the best of our knowledge, as shown in Figure f, our work exceeded other existing studies in terms of damping performance and mechanical strength. − Compared with polyurethane containing uniform chain length dangling chains, polyurethane with gradient distribution of dangling chains showed higher loss factor in the glass transition zone. In the AFM phase diagram and TEM images, as shown in Sections and 3.1.2, we observed that polyurethane with gradient distribution of dangling chains has domain structures of different scales locally, and the winding of chain segments was more complicated.…”