Epoxy-Modified Bismaleimide Structural Adhesive Film Toughened Synergistically with PEK-C and Core–Shell Polymers for Bonding CFRP

Zhao, Linda; Xu, Xin; Xiao, Wanbao; Li, Hongfeng; Feng, Hao; Liu, Changwei; Qiao, Yingjie; Bai, Xuefeng; Wang, Dezhi; Qu, Chengtun

doi:10.3390/polym15061436

Cited by 4 publications

(1 citation statement)

References 38 publications

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“…[24][25][26][27][28] However, conventional epoxy resins are unable to meet the requirements for thermal or flame resistance. In order to address this limitation, high thermal stability polymers such as benzoxazine, [23,29] bismaleimides, [30,31] cyanate esters, [32,33] and polyethersulfone [34] are often incorporated into epoxy resins to escalate their properties.…”

Section: Introductionmentioning

confidence: 99%

Thermal Stable and Flexible Bio‐Based Polybenzoxazine with Epoxy‐Functionalized Poly(dimethylsiloxane) Hybrids

Kao

Chen

EL‐Mahdy

et al. 2023

Macro Chemistry & Physics

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In this study, a monofunctionalized bio‐based benzoxazine monomer (VAnBZ‐CN) is synthesized by condensation of vanillin, formaldehyde, and aniline, and a bifunctional epoxy‐functionalized poly(dimethylsiloxane) (PDMS‐epoxy) is also prepared through hydrosilylation reactions with allyl glycidyl ether. By blending the inorganic PDMS‐epoxy with the VAnBZ‐CN benzoxazine monomer, an organic/inorganic hybrid material is formed, which exhibited enhanced thermal stability after thermal curing polymerization. The improved thermal stability observed in the hybrid material can be attributed to a combination of the formation of the triazine structure by VAnBZ‐CN and the presence of the inorganic part of PDMS‐epoxy on the surface. For example, the PDMS‐epoxy/VAnBZ‐CN = 1/1 hybrid showed the thermal decomposition temperature (Td10) of 309 °C, the glass transition temperature (Tg) of 165 °C, and the char yield of 54 wt.% after the thermal curing polymerization process conducted at 240 °C based on thermogravimetric (TGA) and dynamic mechanical analyses (DMA). Furthermore, the char yield of the hybrid material with PDMS‐epoxy/VAnBZ‐CN = 1/3 is higher than that both of pure VAnBZ‐CN and PDMS‐epoxy after the thermal curing polymerization process. This result indicates that the addition of PDMS‐epoxy resin can improve the formation of a char residue and then enhance the resistance to thermal decomposition for their overall thermal stabilities.

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Section: Introductionmentioning

confidence: 99%

Thermal Stable and Flexible Bio‐Based Polybenzoxazine with Epoxy‐Functionalized Poly(dimethylsiloxane) Hybrids

Kao

Chen

EL‐Mahdy

et al. 2023

Macro Chemistry & Physics

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POSS‐reinforced covalent network in epoxy adhesive and its improvement in the high‐temperature adhesion, toughness, and transparency

Chengyu,

Nan,

Qisong

et al. 2024

J of Applied Polymer Sci

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Developing epoxy structural adhesives with excellent high‐temperature adhesion remains a great challenge. The incorporation of fillers can enhance the performance of epoxy adhesives, albeit at the expense of reduced high‐temperature adhesion properties. Polyhedral oligomeric silsesquioxanes (POSS) is considered a promising filler for enhancing high‐temperature adhesion properties due to its excellent compatibility and nano cage‐structured. Herein, the rigid cage‐structured was covalently introduced epoxy adhesives to improve the high‐temperature adhesion properties. The introduction of 1 wt% POSS significantly increased the high‐temperature (120°C) adhesion strength by 197% and toughness by 283%. The POSS‐reinforced adhesive also featured excellent wide temperature adaptability, indicating that it maintained high adhesion strength at various temperatures. Furthermore, POSS drastically enhanced the transparency of epoxy adhesive by three times. It is highly anticipated that this work will open a new avenue of designing epoxy adhesives with the excellent high‐temperature adhesion properties and transparency.

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Synthesis of High Mechanical Strength and Thermally Recyclable and Reversible Polyurethane Adhesive by Diels–Alder Reaction

Xi,

Wang

2024

Macro Chemistry & Physics

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Recyclability of polyurethane materials is significant to relieve environmental problems caused by damaged polymers. Inspired by plenty of self‐healing properties based on dynamic covalent bonds. A high mechanical strength and thermally reversible polyurethane adhesive are acquired through co‐polymerization of poly‐1,4‐butylene adipate glycol (PBA), soybean oil‐based polyol (MESO), and toluene diisocyanate (TDI) whose linear polymer chains are constructed by Diels–Alder reaction between furfuryl alcohol (FA) and bismaleimide (BMI), named DAPU. Further, the obtained polyurethane adhesives show great recyclability, mechanical performance (Whose tensile strength can reach 91.7 MPa), and appropriate self‐healing ability through the thermally reversible Diels–Alder covalent bonds and hydrogen bonds between urethane groups, which may pave a way for further development of recyclable materials.

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Epoxy-Modified Bismaleimide Structural Adhesive Film Toughened Synergistically with PEK-C and Core–Shell Polymers for Bonding CFRP

Cited by 4 publications

References 38 publications

Thermal Stable and Flexible Bio‐Based Polybenzoxazine with Epoxy‐Functionalized Poly(dimethylsiloxane) Hybrids

Thermal Stable and Flexible Bio‐Based Polybenzoxazine with Epoxy‐Functionalized Poly(dimethylsiloxane) Hybrids

POSS‐reinforced covalent network in epoxy adhesive and its improvement in the high‐temperature adhesion, toughness, and transparency

Synthesis of High Mechanical Strength and Thermally Recyclable and Reversible Polyurethane Adhesive by Diels–Alder Reaction

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