Fabrication of mechanically robust urushiol-based polymer coatings with excellent self-healing property and hydrophobicity

Zhao, Wenhui; Han, Xiaotao; Lu, Yibin; Zhang, Zhiwen; Zhang, Qiang; Peng, Pai; Wu, Haixia

doi:10.1016/j.porgcoat.2022.107237

Cited by 8 publications

(4 citation statements)

References 31 publications

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“…Therefore, the new generation of polyurethane materials should have good healing and recycling capabilities to reduce the use cost and extend their service life. − The prerequisite for self-healing materials to obtain self-healing and recovery properties is to introduce reversible dynamic bonds, which are easy to break and recombine. Dynamic bonds include covalent bonds such as disulfide bonds, ,− acylhydrazone bonds, ,, Diels–Alder reactions, − and ester exchange reactions, , as well as noncovalent interactions such as hydrogen-bond, − π–π-stacking, , metal-ligand-bond, − and host–guest interactions. , …”

Section: Introductionmentioning

confidence: 99%

Tough, Photoluminescent, Self-Healing Waterborne Polyurethane Elastomers Resulting from Synergistic Action of Multiple Dynamic Bonds

Xiao-hong

Han

et al. 2023

ACS Appl. Mater. Interfaces

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Polymers that integrate multiple functions into one system broaden the application range of materials, but it remains a great challenge to obtain polymer materials with simultaneously high strength, high toughness, and high self-healing rate. In this work, we prepared waterborne polyurethane (WPU) elastomers using Schiff bases containing disulfide and acylhydrazone bonds (PD) as chain extenders. Acylhydrazone forming a hydrogen bond not only acts as a physical cross-linking point, which promotes the microphase separation of polyurethane to increase the thermal stability, tensile strength, and toughness of the elastomer, but also serves as a “clip” to integrate various dynamic bonds together to synergistically reduce the activation energy of the polymer chain movement and endow the molecular chain with faster fluidity. Therefore, WPU-PD exhibits excellent mechanical properties at room temperature, such as a tensile strength and a fracture energy of 25.91 MPa and 121.66 kJ m–2, respectively, and a high self-healing efficiency of 93.7% in a short time under moderate heating conditions. In addition, the photoluminescence property of WPU-PD enables us to track its self-healing process by monitoring change of the fluorescence intensity at the cracks, which helps to avoid the accumulation of cracks and improve the reliability of the elastomer. This self-healing polyurethane has a great potential application value in optical anticounterfeiting, flexible electronics devices, functional automobile protective films, and so on.

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Section: Introductionmentioning

confidence: 99%

Tough, Photoluminescent, Self-Healing Waterborne Polyurethane Elastomers Resulting from Synergistic Action of Multiple Dynamic Bonds

Xiao-hong

Han

et al. 2023

ACS Appl. Mater. Interfaces

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“…22 The repair mechanism of intrinsic self-healing materials is realized by reversible covalent chemical reactions and non-covalent bonding chemical methods. [23][24][25][26] Although intrinsic self-repairing materials have good self-healing ability, it is difficult to introduce reactive groups into the polymer matrix. 27 The extrinsic self-repairing material refers to the introduction of the restorative agent into the matrix directly or indirectly, and the release of the restorative agent in the material through the change of the external environment so as to achieve the self-repairing effect, which is easy to manufacture in most polymers and does not change the original chemical structure compared with the intrinsic type material.…”

Section: Introductionmentioning

confidence: 99%

“…Self‐repairing materials are generally classified into intrinsic and extrinsic self‐repairing materials 22 . The repair mechanism of intrinsic self‐healing materials is realized by reversible covalent chemical reactions and non‐covalent bonding chemical methods 23–26 . Although intrinsic self‐repairing materials have good self‐healing ability, it is difficult to introduce reactive groups into the polymer matrix 27 .…”

Section: Introductionmentioning

confidence: 99%

Self‐lubricating epoxy composite coating with linseed oil microcapsule self‐healing functionality

Yang,

Niu,

Wang

et al. 2023

J of Applied Polymer Sci

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Cured epoxy resins have poor abrasion resistance, which shortens the service life of the material. This work aims to improve the tribological properties of epoxy resins by coupling self‐lubrication and auto‐healing. In this study, linseed oil microcapsules with an average particle size of 38.57 μm and good thermal stability were successfully prepared by in situ polymerization. The effects of microcapsule content on the tribological, mechanical, and self‐healing properties of the composite coatings were studied. It was demonstrated that the composite coating has outstanding self‐lubricating properties. The coefficient of friction reduced from 0.634 (pure epoxy resin) to 0.0459 (epoxy resin with 10 wt.% linseed oil microcapsules). Wear rate reduced from 7.16 × 10−4 mm3/(N m) to 1.74 × 10−5 mm3/(N m). The self‐lubricating mechanism of the coating was investigated by SEM and EDS, which indicated that the formation of uniform and continuous lubricating film on the surface of the friction pairs was the key to improving the wear resistance of the material. In addition, the linseed oil released after the microcapsules rupture can repair the abrasion marks by reacting with oxygen during the friction process. The dual‐functional effect of linseed oil microcapsules prolongs the life of epoxy resin coating and expands its application range.

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“…Numerous methods were applied to modify the BMI resins, which contain thermoplastic resin modification, chain extension by aromatic diamine, design of novel monomers, copolymerization with allyl compounds, and other way. [10][11][12][13] Jiang et al synthesized a novel DOPOderived BMI monomer (MADQ) to improve the toughness and fire safety of BMI resin. The results indicated that the impact strength was improved by 90.1% and the UL-94V-0 rating was reached for MADQ-1.…”

mentioning

confidence: 99%

Bismaleimide resins modified by a novel vanillin‐derived allyl compounds: Synthesis, curing behavior, and thermal properties

Yuan

Wang

Liu

et al. 2023

Polymer Engineering & Sci

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In this study, a novel biobased allyl compound with Schiff‐based structure (MPAM) was developed to improve the toughness and thermal properties of 4,4′‐bismaleimidodiphenylmethane (BDM). The chemical structure of MPAM was characterized by Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (1H NMR). A series of BDM/DBA‐MPAM blend resins (BD‐MPAM resins) were prepared by adjusting the mass ratio of BDM + DBA (BD) to MPAM. The effects of MPAM content on the curing behavior, thermal and mechanical properties of BD‐MPAM resins were discussed in details. Compared with BD resin, the thermal stability of modified resins was improved by increasing the content of MPAM. Meanwhile, an increase of 37.1% in flexural strength, and 228 MPa in flexural modulus were obtained for the cured BD‐MPAM resin having 10 wt% MPAM loading compared to the BD resin. The impact strength of BD‐10 wt% MPAM is of the maximum value (6.6 kJ/m2). Finally, the fracture surface morphology of the BD‐MPAM resins was studied by the scanning electron microscope (SEM).

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Fabrication of mechanically robust urushiol-based polymer coatings with excellent self-healing property and hydrophobicity

Cited by 8 publications

References 31 publications

Tough, Photoluminescent, Self-Healing Waterborne Polyurethane Elastomers Resulting from Synergistic Action of Multiple Dynamic Bonds

Tough, Photoluminescent, Self-Healing Waterborne Polyurethane Elastomers Resulting from Synergistic Action of Multiple Dynamic Bonds

Self‐lubricating epoxy composite coating with linseed oil microcapsule self‐healing functionality

Bismaleimide resins modified by a novel vanillin‐derived allyl compounds: Synthesis, curing behavior, and thermal properties

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