Simultaneously optimized healing efficiency and mechanical strength in polymer composites reinforced by ultrahigh loading fillers based on interfacial energy and dynamic disulfide bonds

Ding, Shanjun; Zhu, Guocui; Zhao, Shuai; Wu, Wei‐Tao; Jin, Peng; Jiao, Yuke; Zhai, Wenrui; Zhou, Lin; Luo, Yunjun

doi:10.1016/j.polymer.2022.124711

Cited by 16 publications

(11 citation statements)

References 28 publications

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“…Therefore, the healing ability and mechanical strength of ultra-high-filling polymer composites are contradictory and difficult to optimize at the same time. Ding et al [ 84 ] used EPU-SS as a binder to prepare ECMs with RDX and aluminum powder, which developed a crack-healing method ( Figure 5 d). The compressive stress at room temperature significantly increased the interface contact effect.…”

Section: Dynamic Covalent Bonds In Self-healing Ecmsmentioning

confidence: 99%

“…[ 83 ] with permission; Copyright American Chemical Society, 2021), ( d ) preparation and healing process of ECMs with EPU-SS as binders (reproduced from Ref. [ 84 ] with permission; Copyright Elsevier, 2022).…”

Section: Figurementioning

confidence: 99%

“…with permission; Copyright Royal Society of Chemistry, 2021), (c) the synthesis process and microstructure of EPU-SS(reproduced from Ref [83]. with permission; Copyright American Chemical Society, 2021), (d) preparation and healing process of ECMs with EPU-SS as binders (reproduced from Ref [84]. with permission; Copyright Elsevier, 2022).…”

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confidence: 99%

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Current Self-Healing Binders for Energetic Composite Material Applications

Yang

Zhou

et al. 2023

Molecules

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Energetic composite materials (ECMs) are the basic materials of polymer binder explosives and composite solid propellants, which are mainly composed of explosive crystals and binders. During the manufacturing, storage and use of ECMs, the bonding surface is prone to micro/fine cracks or defects caused by external stimuli such as temperature, humidity and impact, affecting the safety and service of ECMs. Therefore, substantial efforts have been devoted to designing suitable self-healing binders aimed at repairing cracks/defects. This review describes the research progress on self-healing binders for ECMs. The structural designs of these strategies to manipulate macro-molecular and/or supramolecular polymers are discussed in detail, and then the implementation of these strategies on ECMs is discussed. However, the reasonable configuration of robust microstructures and effective dynamic exchange are still challenges. Therefore, the prospects for the development of self-healing binders for ECMs are proposed. These critical insights are emphasized to guide the research on developing novel self-healing binders for ECMs in the future.

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Section: Dynamic Covalent Bonds In Self-healing Ecmsmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

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Current Self-Healing Binders for Energetic Composite Material Applications

Yang

Zhou

et al. 2023

Molecules

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“… Objective of inorganic fillers in flame retardant coatings [ 87 , 240 , 241 , 242 , 243 , 244 , 245 , 246 , 247 ]. …”

Section: Figurementioning

confidence: 99%

Flame Retardant Coatings: Additives, Binders, and Fillers

et al. 2022

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This review provides an intensive overview of flame retardant coating systems. The occurrence of flame due to thermal degradation of the polymer substrate as a result of overheating is one of the major concerns. Hence, coating is the best solution to this problem as it prevents the substrate from igniting the flame. In this review, the descriptions of several classifications of coating and their relation to thermal degradation and flammability were discussed. The details of flame retardants and flame retardant coatings in terms of principles, types, mechanisms, and properties were explained as well. This overview imparted the importance of intumescent flame retardant coatings in preventing the spread of flame via the formation of a multicellular charred layer. Thus, the intended intumescence can reduce the risk of flame from inherently flammable materials used to maintain a high standard of living.

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“…Polymer binder is one of the materials used for energetic composites, mainly for bonding and endowing materials with mechanical properties [ 7 ]. For balancing the mechanical properties and improving the reprocessing performance of energetic composites, substantial efforts have focused on the molecular engineering of polymers [ 8 , 9 , 10 ]. However, the ultra-high filler will inevitably reduce the interface contact effect, thus intensifying the contradiction between tensile strength, toughness and reprocessing.…”

Section: Introductionmentioning

confidence: 99%

Molecular Engineering of Binder for Improving the Mechanical Properties and Recyclability of Energetic Composites

et al. 2023

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Mechanical properties and reprocessing properties are of great significance to the serviceability and recyclability of energetic composites. However, the mechanical robustness of mechanical properties and dynamic adaptability related to reprocessing properties are inherent contradictions, which are difficult to optimize at the same time. This paper proposed a novel molecular strategy. Multiple hydrogen bonds derived from acyl semicarbazides could construct dense hydrogen bonding arrays, strengthening physical cross-linking networks. The zigzag structure was used to break the regular arrangement formed by the tight hydrogen bonding arrays, so as to improve the dynamic adaptability of the polymer networks. The disulfide exchange reaction further excited the polymer chains to form a new “topological entanglement”, thus improving the reprocessing performance. The designed binder (D2000-ADH-SS) and nano-Al were prepared as energetic composites. Compared with the commercial binder, D2000-ADH-SS simultaneously optimized the strength and toughness of energetic composites. Due to the excellent dynamic adaptability of the binder, the tensile strength and toughness of the energetic composites still maintained the initial values, 96.69% and 92.89%, respectively, even after three hot-pressing cycles. The proposed design strategy provides ideas for the design and preparation of recyclable composites and is expected to promote the future application in energetic composites.

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Simultaneously optimized healing efficiency and mechanical strength in polymer composites reinforced by ultrahigh loading fillers based on interfacial energy and dynamic disulfide bonds

Cited by 16 publications

References 28 publications

Current Self-Healing Binders for Energetic Composite Material Applications

Current Self-Healing Binders for Energetic Composite Material Applications

Flame Retardant Coatings: Additives, Binders, and Fillers

Molecular Engineering of Binder for Improving the Mechanical Properties and Recyclability of Energetic Composites

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