Enhanced Mechanical and Thermal Properties of Epoxy Resins Through Hard-Soft Biphasic Synergistic Toughening with Modified POSS/Polysulfide Rubber.

ABSTRACT: Toughening modification of epoxy resin (EP) matrices is important for advancing high-performance fiber-reinforced composites. A promising strategy involves the use of multi-component additive systems. However, synergistic effects in such additive systems are difficult to achieve for multidimensional performance optimization due to insufficient interfacial interactions and competing toughening mechanisms. Herein, a "hard-soft" biphasic synergistic toughening system was engineered for epoxy resin, composed of furan-ring-grafted polyhedral oligomeric silsesquioxane (FPOSS) and liquid polysulfide rubber. The hybrid toughening agent significantly enhanced the integrated performance of the epoxy system: Young's modulus, tensile strength, and elongation at break increased by 13%, 56%, and 101%, r

SUBMITTER: Yuan X 

PROVIDER: S-EPMC12845993 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature