Abstract
The preparation of green bio-based phenolic resin with high performance has far-reaching significance for sustainable development and is an important research direction for researchers in recent years. In this study, a novel resveratrol-modified lignin-based phenolic phenolic resin (R-LPF) with ultra-high Tg and improved mechanical properties was synthesized with biomass phenol of resveratrol and lignin as raw materials. The curing behaviors of phenolic resin (PF), lignin phenolic resin (LPF) and R-LPF were investigated. The thermal mechanical properties, thermal stability, comprehensive mechanical properties, frictional properties and morphology were systematically tested and analyzed. The results show that the highest Tg of the modified R-LPF reaches 346.2°C, which is much higher than that of traditional PF, and the thermal and mechanical properties of the novel R-LPF are also significantly improved. The Ts reaches 231.5°C, and the residual carbon rate reaches 66.2% at 800°C. The improved tensile strength, bending strength and impact strength are 28.72 ± 1.10 MPa, 57.58 ± 1.95 MPa and 3.14 ± 0.19 MPa, respectively. Compared with PF and LPF, the wear resistance is also significantly improved. Due to the rigid structure and high crosslinking density, the modified resin has excellent properties and provides broad application prospects in resin-based friction materials for the bioresource of resveratrol.