Introducing rigid-flexible integrated structure and constructing sacrificial bonds to achieve mechanically robust and malleable epoxy resin

Yang, Lechen; Li, Yong; Huan, Dajun; Zhang, Hewen; Zhu, Chunling

doi:10.1016/j.mtcomm.2024.109688

Materials Today Communications

2024

DOI: 10.1016/j.mtcomm.2024.109688

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Introducing rigid-flexible integrated structure and constructing sacrificial bonds to achieve mechanically robust and malleable epoxy resin

Lechen Yang,

Yong Li,

Dajun Huan

et al.

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2024

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Cited by 2 publications

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A Novel Schiff Base Epoxy: Synthesis, Degradability, and Application as a MultiPurpose Modifier for DGEBA/DDM

Gao,

Xing,

et al. 2024

Journal of Polymer Science

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Simultaneously increasing mechanical strength, toughness, thermal stability, and flame retardancy of epoxy thermoset without compromising transparency is appealing but challenging. To address that goal, a Schiff base epoxy VDEP is developed. The neat VDEP‐cured product, VDEP100wt%, not only shows comparable mechanical strength to conventional epoxy thermoset but also can be degraded in 10% H2SO4/THF/H2O solution in 24 h, showing great degradability under mild conditions. More importantly, proper addition of VDEP simultaneously increases the tensile strength, impact strength, Tg, Td5%, char residue, and UV shielding of cured epoxies while providing self‐extinguishing ability. All of those enhancements are achieved without deteriorating transparency. When 15 wt% of VDEP is added, the tensile strength reaches 91.07 MPa, with a 36.7% increase; the impact strength reaches 40.73 kJ m−2, with a 33.8% increase. The enhancement in mechanical strength is due to the reinforcing effect of intermolecular interaction and compacted network caused by free volume reduction. The higher toughness results from greater mobility of chain segments, reduced crosslinking density and energy dissipative intermolecular interaction. The rigid two benzene‐conjugated Schiff base structure and abundant hydrogen bonding contribute to higher Tg. Therefore, this work provides a degradable Schiff base epoxy and high‐performance thermoset based on it.

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A Novel Schiff Base Epoxy: Synthesis, Degradability, and Application as a MultiPurpose Modifier for DGEBA/DDM

Gao,

Xing,

et al. 2024

Journal of Polymer Science

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A Study on the Ablation Performance and Mechanisms of G10 Insulators in a Supersonic Plasma Flame

Meng,

Liu,

Jia

et al. 2024

J. of Materi Eng and Perform

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Introducing rigid-flexible integrated structure and constructing sacrificial bonds to achieve mechanically robust and malleable epoxy resin

Cited by 2 publications

References 36 publications

A Novel Schiff Base Epoxy: Synthesis, Degradability, and Application as a MultiPurpose Modifier for DGEBA/DDM

A Novel Schiff Base Epoxy: Synthesis, Degradability, and Application as a MultiPurpose Modifier for DGEBA/DDM

A Study on the Ablation Performance and Mechanisms of G10 Insulators in a Supersonic Plasma Flame

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