Tian, Yazhou published the artcileA resveratrol-based epoxy resin with ultrahigh Tg and good processability, Quality Control of 1761-71-3, the publication is European Polymer Journal (2021), 110282, database is CAplus.
Preparing and designing an epoxy system with ultrahigh glass transition temperature (Tg > 300°C) is always a big challenge, which restrict its applications in some cutting-edge areas such as aerospace engineering and elec. electronics. Herein, a biomass-based epoxy resin (REEP) was prepared from resveratrol, and then curing behavior, thermal-mech. properties, mech. performance, thermal stability, dielec. properties and optical properties of REEP/HDDM, REEP/DGEBA/HDDM and DGEBA/HDDM were resp. studied systematically. Results suggested that the Tg of REEP/HDDM was above 320°C, higher than those of most reported epoxy systems, both derived from biomass-based and petroleum-based materials. Moreover, the tensile strength of REEP/HDDM, REEP/DGEBA/HDDM and DGEBA/HDDM were 77.8 MPa, 70.8 MPa and 63.6 MPa, resp., and the Td5% of REEP/HDDM, REEP/DGEBA/HDDM and DGEBA/HDDM were 319.9°C, 335.1°C and 348.1°C, resp., indicating excellent mech. performance and thermal stability of the cured epoxy system. Interestingly, the REEP/HDDM exhibited outstanding blocking properties in the range of 220-400 nm (UV-light) and low flammability with compact and continuous char residues. In short, REEP, with a well-defined chem. structure, has a stiffness conjugated stilbene structure to prevent the mol. from motioning in the crosslinked network structure and three epoxy groups, thereby increasing the crosslinked d. dramatically, which endows REEP/HDDM network with outstanding comprehensive properties.
European Polymer Journal published new progress about 1761-71-3. 1761-71-3 belongs to quinuclidine, auxiliary class Ploymers, name is 4,4-Diaminodicyclohexyl methane, and the molecular formula is C6H13BO3, Quality Control of 1761-71-3.
Referemce:
https://en.wikipedia.org/wiki/Quinuclidine,
Quinuclidine | C7H13N | ChemSpider