Synthesis and self‐healing behavior of thermoreversible epoxy resins modified with nitrile butadiene rubber

Liu, Feng; Zhao, Hanwen; He, Xiaolong; Zhao, Yanhua; Gou, Liuxiaohui; Wang, Yanping

doi:10.1002/pen.25158

Cited by 18 publications

(11 citation statements)

References 31 publications

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“…It was worth noting that a new peak at 1775 cm −1 presented in FA‐FGE‐BMI spectrum, and it was the characteristic absorption peak of DA adducts. [ 6 ] The results further showed that DA addition reaction took place successfully. As a result, adducts were introduced into the epoxy resin successfully.…”

Section: Resultsmentioning

confidence: 90%

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Thermo‐adjusted self‐healing epoxy resins based on Diels–Alder dynamic chemical reaction

Zhang

et al. 2021

Polymer Engineering & Sci

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Micro‐damage in materials could be repaired by endowing materials with self‐healing performance. Herein, an epoxy resin with excellent self‐healing performance grounded on thermo‐reversible Diels–Alder dynamic chemical reaction was developed. Results showed that the bending strength and adhesive behavior of epoxy resin were influenced dramatically upon treatment with various temperatures. More importantly, damages created in epoxy resin could be repaired completely after suitable heat treatments. What is more, the healed epoxy resin exhibited much higher bending strength and adhesive performance than the pristine one did. The materials could be damaged and then repaired repeatedly. Meanwhile, the as‐prepared self‐healing epoxy resin exhibited excellent thermal reversibility and controllable adhesion. The thermo‐adjusted self‐healing performance endowed epoxy resin with recyclable and reusable performance. Therefore, the research made it possible of recycling waste epoxy resins.

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Section: Resultsmentioning

confidence: 90%

“…The problem is expected to be solved by endowing epoxy resin with self-healing performance. [6][7][8][9] The self-healing property can be endowed by incorporating the dynamic covalent bonds into materials.…”

Section: Introductionmentioning

confidence: 99%

Thermo‐adjusted self‐healing epoxy resins based on Diels–Alder dynamic chemical reaction

Zhang

et al. 2021

Polymer Engineering & Sci

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“…In addition, the particle size and dispersion of additives have a great influence on the physical properties of epoxy resin. Generally, the additive with a small particle size can cause higher physical and mechanical properties in EP [14,15]. Bao et al [16] used silicon-containing flame retardant (PMDA) to modify carbon nanotubes (CNTs), and the obtained modified CNTs showed better dispersion performance in epoxy resin, showing good flame retardancy and thermal stability.…”

Section: Introductionmentioning

confidence: 99%

Facile Construction of Polypyrrole Microencapsulated Melamine-Coated Ammonium Polyphosphate to Simultaneously Reduce Flammability and Smoke Release of Epoxy Resin

et al. 2022

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A unique mono-component intumescent flame retardant, named PPy-MAPP, of which melamine-coated ammonium polyphosphate (MAPP) was microencapsulated by polypyrrole (PPy), was synthesized and carefully characterized. The obtained PPy-MAPP was applied to epoxy resin (EP) for obtaining flame-retarded EP composites. The results show that PPy-MAPP imparts better flame retardancy and smoke suppression properties to EP compared to the same addition of MAPP. The EP composite with 15 wt% PPy-MAPP easily passes the UL94 V-0 rating and achieves an LOI value of 42.4%, accompanied by a 61.9% reduction in total heat release (THR) and a 73.9% reduction in total smoke production (TSP) when compared with pure EP. The char residue analysis shows that PPy-MAPP can promote a generation of more phosphorus-rich structures in the condensed phase that improve the integrity and intumescence of char against fire. The mechanical test indicates that PPy-MAPP has a less negative effect on the tensile strength and elastic modulus of epoxy resin due to the good compatibility between PPy-MAPP and the EP matrix, as supported by differential scanning calorimetry (DSC) analyses. In this paper, these attractive features of PPy-MAPP provide a new strategy to prepare satisfactory flame retardant and super flame retarding EP composites.

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“…[1][2][3][4] Many recyclable elastomers based on non-covalent bonds (hydrogen bonding, [5,6] metal ion coordination bonding, [7] host-guest interactions [8] ) have been developed in the last decade. Compared to the noncovalent cross-linked network structure, such as instability and low mechanical strength, dynamically reversible covalent crosslinked (dynamic imine bonds, [9][10][11] disulfide bonds, [12,13] D-A bonds, [14,15] and acylamino-urea bonds [16] ) elastomers avoid these problems and make the elastomer dimensionally stable, high mechanical strength, solvent resistance.…”

Section: Introductionmentioning

confidence: 99%

Tannic Acid Crosslinked Self‐Healing and Reprocessable Silicone Elastomers with Improved Antibacterial and Flame Retardant Properties

Jiao

Rong

Gao

et al. 2022

Macromol. Rapid Commun.

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Silicone elastomers are widely used in aviation, electronics, automotive, and medical device fields, and their overuse inevitably causes recycled problems. In addition, the elastomers are subject to attack by bacteria and fire during use in some application scenarios, which is a safety hazard. Therefore, there is a great need to prepare silicone elastomers with improved antibacterial, flame retardant, self-healing, and recyclable functions. A new strategy is proposed to prepare silicone elastomers with bio-based tannic acid as cross-linkers to solve this problem by using polydimethylsiloxane as a soft chain segment and 2,2-bis(hydroxymethyl)propionic acid as an intermediate chain extender. Based on the phenol carbamate bonding and hydrogen bonding interactions, the elastomer has efficient self-healing ability and can achieve dynamic dissociation at 120 °C for complete recovery. In addition, due to the unique spatial structure and polyphenolic hydroxyl groups of tannic acid, the mechanical properties of the elastomer are greatly improved with an antimicrobial efficiency of over 90% and a final oxygen index of 25.5%. The multifunctional silicone elastomer has great potential applications in recyclable refractory materials and antimicrobial materials.

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Synthesis and self‐healing behavior of thermoreversible epoxy resins modified with nitrile butadiene rubber

Cited by 18 publications

References 31 publications

Thermo‐adjusted self‐healing epoxy resins based on Diels–Alder dynamic chemical reaction

Thermo‐adjusted self‐healing epoxy resins based on Diels–Alder dynamic chemical reaction

Facile Construction of Polypyrrole Microencapsulated Melamine-Coated Ammonium Polyphosphate to Simultaneously Reduce Flammability and Smoke Release of Epoxy Resin

Tannic Acid Crosslinked Self‐Healing and Reprocessable Silicone Elastomers with Improved Antibacterial and Flame Retardant Properties

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