Synergistically toughening epoxy resins with reactive acrylate-based block copolymers and nano-SiO<sub>2</sub>

XIANG Yanli; GE Panfeng; REN Qiang; WANG Chenyi; LI Jian

doi:10.13801/j.cnki.fhclxb.20230818.001

Volume 41 Issue 4

Apr. 2024

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XIANG Yanli, GE Panfeng, REN Qiang, et al. Synergistically toughening epoxy resins with reactive acrylate-based block copolymers and nano-SiO2[J]. Acta Materiae Compositae Sinica, 2024, 41(4): 1830-1839. doi: 10.13801/j.cnki.fhclxb.20230818.001

Citation:

XIANG Yanli, GE Panfeng, REN Qiang, et al. Synergistically toughening epoxy resins with reactive acrylate-based block copolymers and nano-SiO₂[J]. Acta Materiae Compositae Sinica, 2024, 41(4): 1830-1839. doi: 10.13801/j.cnki.fhclxb.20230818.001

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Synergistically toughening epoxy resins with reactive acrylate-based block copolymers and nano-SiO₂

doi: 10.13801/j.cnki.fhclxb.20230818.001

School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China

Funds: National Natural Science Foundation of China (51873025); Top-notch Academic Programs Project of Jiangsu Higher Education Institutions; Priority Academic Program Development of Jiangsu Higher Education Institutions

Received Date: 2023-06-12
Accepted Date: 2023-08-03
Rev Recd Date: 2023-07-24

Available Online: 2023-08-18

Publish Date: 2024-04-15

Abstract

Abstract

Two reactive acrylate triblock copolymers including poly(methyl methacrylate-co-glycidyl methacrylate)-b-poly(butyl acrylate)-b-poly(methyl methacrylate-co-glycidyl methacrylate) (PMGBMG) and poly(methyl methacrylate)-b-poly(butyl acrylate-co-glycidyl methacrylate)-b-poly(methyl methacrylate) (PMBGM) were synthesized via initiator for continuous activator regeneration atom transfer radical polymerization (ICAR-ATRP). Nano-SiO₂ modified by 3-ainopropyltriethoxysilane (KH-550) was grafted on block copolymer to prepare PMGBMG-SiO₂ and PMBGM-SiO₂ as tougheners for epoxy resin. Results show that addition of 5%PMGBMG-SiO₂ in E-51 epoxy resin can increase the critical stress intensity factor (K_IC) by 145% compared with pure epoxy matrix. Meanwhile, the tensile strength and modulus are increased by 8% and 31% respectively, which are superior to the resins modified by pure copolymer and PMBGM-SiO₂. The toughness and rigidity are improved simultaneously, while heat resistance is also well maintained.
- ICAR-ATRP,
- block copolymer,
- nano-SiO₂,
- synergistic toughening,
- epoxy resin,
- mechanical properties
Long Abstrsct
Innovation Points

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References(29)

References

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