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- W3149102936 abstract "Abstract The dynamic covalent chain polyester oligomer PCG5 is prepared and applied to epoxy thermoset. Preliminary tests including pattern stamping, healing, shape memory, indentation, and adhesion test of the cured epoxy resin show that PCG5 can accelerate deformation, crack‐healing, and transesterification rates at high temperatures. The transesterification rate and activation energy are quantitatively determined by a newly developed TGA method in the authors' group. This method is used to further realize a virtual acceleration mechanism of PCG5 in the transesterification reaction with cured epoxy resins, pointing out that the increase in cross‐link density and ester concentration improves the mobility of structure units and collision of ester groups. Moreover, introduction of PCG5 doesn't sacrifice glass transition temperatures ( T g ) of the cured epoxy resin and strengthens the fiber composites. An 85% recovery in storage modulus and an 88% recovery in tensile strength are achieved after 10 000 cycle's fatigue tests." @default.
- W3149102936 created "2021-04-13" @default.
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- W3149102936 date "2021-04-02" @default.
- W3149102936 modified "2023-10-15" @default.
- W3149102936 title "Acceleration Effect of Dynamic Covalent Chains in a Hard Epoxy Resin on Its Thermally Induced Deformation and Healing Behavior" @default.
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- W3149102936 doi "https://doi.org/10.1002/mame.202100037" @default.
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