Tung oil and rosin synergistically modified fluorinated epoxy resin, enhancing its flexibility, hydrophobicity, adhesion, and dielectric properties

作者：Fulu Wang, Changxin Wan, Hongwen Li, Yuhang Li, Feng Hu, Qing Chen, Youwei Liao, Yan Yang · 发表于：Industrial Crops and Products · 年份：2025 · DOI：10.1016/j.indcrop.2025.121930 · 被引用次数：6 · 研究领域：Synthesis and properties of polymers、Silicone and Siloxane Chemistry、Epoxy Resin Curing Processes

As electronic circuit components evolve to prioritise flexible and integrated designs, conventional bisphenol A-based epoxy resins (EP) face significant limitations owing to inherent shortcomings, including low toughness, excessive brittleness, and suboptimal dielectric and waterproof performance. The present research demonstrates the synthesis of a novel FEP-TR resin by strategically incorporating biomass-based tung oil and rosin into a fluorinated epoxy matrix. The flexible aliphatic chain disperses stress, while the hydrogenated phenanthrene ring increases the resin's free volume, and the trifluoromethyl group reduces surface energy and inhibits the polarisation rate. The unique molecular architectures of the three components, combined with their microscale interactions, synergistically established a complementary mechanism, leading to significant improvements in flexibility, hydrophobicity, bonding strength, and dielectric properties. Relative to EP, FEP-TR resin exhibits a 531.6 % higher elongation at break, a 249.7 % boost in impact strength, an 18.4 % lower dielectric constant, a 38.7 % reduction in dielectric loss, a 26.9 % decrease in water absorption, a 101° contact angle, and enhanced adhesive performance. Compared to recently reported materials, the synergistic complementary mechanism arising from molecular-scale interactions among the three components in this study presents a novel strategy for addressing the longstanding challenge of achieving balanced dielectri...