Preparation and properties of self-healing polyurethane without external stimulation

Chen, Yu; Shi, Chuanying; Zhang, Zhaoyang; Xu, Qi; Hu, Haiqing; Wei, Yuezhou

doi:10.1007/s00289-022-04075-8

Cited by 7 publications

(3 citation statements)

References 36 publications

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“…Such mechanical self-healing performance met the requirement of assembling self-healing stretchable micro-supercapacitors. As for the covalent crosslinking methods, different reversible covalent systems such as Schiff base bond recombination, [66] Diels-Alder reaction, [67][68][69][70] acyl hydrazone re-bonding, [71] alkoxyamine, [72] borate ester bonds, [73,74] siloxane bonds, [75] and disulfide bonds [76,77] have been investigated for realizing self-healing capabilities. In this regard, the cellulose obtained from cotton was crosslinked by tetraethyl orthosilicate (TEO) to prepare a novel organo-hydrogel electrolyte containing ZnSO 4 , MnSO 4 , and Gly.…”

Section: Mechanical Stabilitymentioning

confidence: 99%

Organo‐Hydrogel Electrolytes with Versatile Environmental Adaptation for Advanced Flexible Aqueous Energy Storage Devices

et al. 2023

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With growing demands for portable electronics, flexible aqueous energy storage devices such as supercapacitors and Zn‐based batteries have drawn tremendous interest from both academic and industrial fields. Organo‐hydrogels, crosslinked amphiphilic polymers filled with organic solvents and water, are regarded as an ideal electrolyte candidate for portable electronic applications, especially due to their superior environmental adaptation. Organo‐hydrogels can reserve the advantages of the corresponding hydrogels and achieve some unique features such as broad temperature tolerance, high mechanical stability, strong interfacial interaction, and decent ionic conductivity. This review outlines the composition fundamentals, preparation methods, and comprehensive properties of reported organo‐hydrogel electrolytes. In particular, supercapacitors and Zn‐based batteries that operate under harsh temperature conditions and unusual mechanical deformations endowed by organo‐hydrogel electrolytes are further highlighted. Moreover, a unique perspective on the current challenges and future development directions of the organo‐hydrogel electrolytes for flexible energy storage is also provided.

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Section: Mechanical Stabilitymentioning

confidence: 99%

Organo‐Hydrogel Electrolytes with Versatile Environmental Adaptation for Advanced Flexible Aqueous Energy Storage Devices

et al. 2023

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“…The mechanism of action of self‐healing polyurea materials benefits from the dynamic reversible reactions of the system, which are generally divided into dynamic covalent interactions, such as disulfide bonds, 18–20 ester bonds, 21 borate ester bonds, 22,23 acyl hydrazone bonds, 24,25 and non‐covalent interactions, such as hydrogen bonding, 18 ionic interactions, 26 and host‐object interactions 27 . As we know from the bond energy, the bond energy of disulfide bond (S–S) is 240 kJ/mol, 28 which is higher than the non‐covalent interactions of hydrogen bond (less than 20 kJ/mol) 29 and lower than the carbon–carbon (C–C) single covalent bond (346 kJ/mol) 28 .…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, self-healing polyurea materials emerged at the historic moment and set off a research boom. [13][14][15][16][17] The mechanism of action of self-healing polyurea materials benefits from the dynamic reversible reactions of the system, which are generally divided into dynamic covalent interactions, such as disulfide bonds, 18-20 ester bonds, 21 borate ester bonds, 22,23 acyl hydrazone bonds, 24,25 and noncovalent interactions, such as hydrogen bonding, 18 ionic interactions, 26 and host-object interactions. 27 As we know from the bond energy, the bond energy of disulfide bond…”

mentioning

confidence: 99%

Design and properties of dynamic self‐healing polyurea molecule based on disulfide bonds

Wen

Wang

Rui

et al. 2022

J of Applied Polymer Sci

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Although thermosetting polymer materials have excellent mechanical properties, they are less self-healing, recycling than thermoplastic polymer materials, which may cause a serious waste of resources. Herein, a series of polyurea materials with high mechanical strength, good properties of self-healing and recycling are prepared by adjusting the ratio of polyether polyol and introducing disulfides into the synthesis of polyurea prepolymer in an innovative way.The composite polyurea (FHPUA) materials with tensile strength over 47 MPa and elongation at break of 720% are prepared. The experimental results show that by adjusting the content of aromatic disulfide, the tensile strength is further increased to 52 MPa, and the heat resistance of the material is improved. Through five self-healing experiments, the surface of the material recovers as before even after continuous heating at 70 C for 1 h. In addition, the tensile strength of the material recovers 86.56% and the elastic modulus recovers 70.21% after four recycling experiments. In practical application, it is expected to fill the shortcomings of traditional polyurea such as micro cracks, short service life and poor performance, and have great potential applications in the fields of coating layer of heavy-duty conveyor belts, encapsulation film of electronic devices and building facade coating.disulfide bonds, high mechanical properties, polyurea, recycling, self-healing | INTRODUCTIONPolyurea, made from polyisocyanate and polyamine, belongs to a branch of polyurethane materials, which is an excellent synthetic polymeric material. The polar bonds such as urea bonds, 1,2 ester bonds, 3 and ether bonds 4 provided excellent mechanical properties, heat resistance, and solvent resistance to polyurea materials. In addition, the three-dimensional structure by the crosslinking reaction also makes the performance of polyurea materials more excellent. 5 It has been widely used in electronic devices, 6,7 aerospace, 8 rail transportation, 9,10 construction, 11,12 and so on. However, in practical application, it will be damaged to different degrees under the stimulation of light, heat, radiation, and external force, which will not only affect the service life of the material, but also cause safety problems. Therefore, self-healing polyurea materials emerged at the historic moment and set off a research boom. [13][14][15][16][17] The mechanism of action of self-healing polyurea materials benefits from the dynamic reversible reactions of the system, which are generally divided into dynamic covalent interactions, such as disulfide bonds, 18-20 ester bonds, 21 borate ester bonds, 22,23 acyl hydrazone bonds, 24,25 and noncovalent interactions, such as hydrogen bonding, 18 ionic interactions, 26 and host-object interactions. 27 As we know from the bond energy, the bond energy of disulfide bond

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Effect of acylhydrazone self-healing agents with different structures on the properties of SBS modified asphalt waterproofing membrane

He,

Zhang,

Zeng

et al. 2024

Construction and Building Materials

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Preparation and properties of self-healing polyurethane without external stimulation

Cited by 7 publications

References 36 publications

Organo‐Hydrogel Electrolytes with Versatile Environmental Adaptation for Advanced Flexible Aqueous Energy Storage Devices

Organo‐Hydrogel Electrolytes with Versatile Environmental Adaptation for Advanced Flexible Aqueous Energy Storage Devices

Design and properties of dynamic self‐healing polyurea molecule based on disulfide bonds

Effect of acylhydrazone self-healing agents with different structures on the properties of SBS modified asphalt waterproofing membrane

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