In order to explore new high-strength polymer materials that can achieve self-healing of damage under more mild conditions, the high-strength room temperature self-healing polyurethane elastomers with multiple hydrogen bonds/aromatic disulphide bonds (PUPIPMD) were constructed by using the strategy of multiple repair networks. Through the interaction between the carbamate group (-NH-C(=O)-O-), pyridine and urea group (-NH-CO-NH-) to form a multiple of different strength hydrogen bond, the reversible covalent bond-disulphide bond (-S-S-) was introduced into the molecular chain at the same time to build the target amorphous structure products. The prepared room temperature self-healing polyurethane elastomer had outstanding mechanical properties with strain-strengthening behaviour. In addition, it also exhibits strain-strengthening behaviour. After 48 h of static repair at room temperature, the tensile strength, elongation at break, and toughness of prepared polyurethane elastomer can be well restored, with a synchronous self-healing efficiency of over 80%. Achieving a dual improvement in mechanical strength and room temperature self-healing performance. And further enhanced the service life and reusability of the polyurethane elastomer material.
WangWLiWFanW, et al.Accelerated self-healing performance of magnetic gradient coating. Chem Eng J2018; 332: 658–670.
2.
KangJHSonDHWangJN, et al.Tough and water-insensitive self-healing elastomer for robust electronic skin. Adv Mater2018; 30: 1706846.
3.
YvanECaillolS. Hybrid polyhydroxyurethanes: how to overcome limitations and reach cutting edge properties?Eur Polym J2020; 137: 109915.
4.
AcomeEMitchellSKMorrisseyTG, et al.Hydraulically amplified self-healing electrostatic actuators with muscle-like performance. Science2018; 359: 61–65.
5.
GrosjeanMBerneDCaillolS, et al.Dynamic PEG-PLA/hydroxyurethane networks based on imine bonds as reprocessable elastomeric biomaterials. Biomacromolecules2023; 24: 3472–3483.
6.
LeiJFLiXYWangS, et al.Facile fabrication of biocompatible gelatin-based self-healing hydrogels. ACS Appl Polym Mater2019; 1: 1350–1358.
7.
XuWMRongMZZhangMQ. Sunlight driven self-healing, reshaping and recycling of robust, transparent and yellowing-resistant polymer. J Mater Chem A2016; 4: 10683–10690.
8.
WuXWangJHuangJ,et al.Room temperature readily self-healing polymer via rationally designing molecular chain and crosslinking bond for flexible electrical sensor. J Colloid Interface Sci2020; 559: 152–161.
9.
XiangHPRongMZZhangMQ. A facile method for imparting sunlight driven catalyst-free self-healability and recyclability to commercial silicone elastomer. Polymer2017; 108: 339–347.
10.
LaiYKuangXZhuP, et al.Colorless, transparent, robust, and fast scratch-self-healing elastomers via a phase-locked dynamic bonds design. Adv Mater2018; 30: 1802556.
11.
CaillolS. A blooming season for natural polymers and biopolymers. Molecules2023; 28: 3207.
12.
ZhouJHYangYLQinR, et al.Robust poly(urethane-amide) protective film with fast self-healing at room temperature. ACS Appl Polym Mater2020; 2: 285–294.
13.
WuJCaiLHWeitzDA. Tough self-healing elastomers by molecular enforced integration of covalent and reversible networks. Adv Mater2017; 29: 1702616.
14.
DelpierreSWillocqBManiniG, et al.Simple approach for a self-healable and stiff polymer network from iminoboronate-based boroxine chemistry. Chem Mat2019; 31: 3736–3744.
WangZHXieCYuCJ, et al.A facile strategy for self-healing polyurethanes containing multiple metal–ligand bonds, Macromol. Rapid Commun2018; 39: 1700678.
17.
ZhuYXXuanHYRenJY, et al.Humidity responsive self-healing based on intermolecular hydrogen bonding and metal– ligand coordination. RSC Adv2016; 6: 89757–89763.
18.
XiaLLTuHJZengW, et al.A room-temperature self-healing elastomer with ultra-high strength and toughness fabricated via optimized hierarchical hydrogen-bonding interactions. J Mater Chem A2022; 10: 4344.
19.
CaiYBZouHWZhouST, et al.Room-temperature self-healing ablative composites via dynamic covalent bonds for high-performance applications. ACS Appl Polym Mater2020; 2: 3977–3987.
20.
HussainISayedSMLiuSL, et al.Hydroxyethyl cellulose-based self-healing hydrogels with enhanced mechanical properties via metal-ligand bond interactions. Eur Polym J2018; 100: 219–227.
21.
ZhouZQChenSYXuXM, et al.Room temperature self-healing crosslinked elastomer constructed by dynamic urea bond and hydrogen bond. Prog Org Coat2021; 154: 106213.
22.
LaiJCJiaXYWangDP, et al.Thermodynamically stable whilst kinetically labile coordination bonds lead to strong and tough self-healing polymers. Nat Commun2019; 10: 1164–1172.
23.
TuHJZhouMGuY, et al.Conductive, self-healing, and repeatable graphene/carbon nanotube/polyurethane flexible sensor based on Diels-Alder chemothermal drive. Compos Sci Technol2022; 225: 109476.
24.
WuXZWangJQHuangJX, et al.Room temperature readily self-healing polymer via rationally designing molecular chain and crosslinking bond for flexible electrical sensor. J Colloid Interface Sci2020; 559: 152–161.
25.
ZhangMZhaoFXinW,et al.Room-temperature self-healing and reprocessable waterborne polyurethane with dynamically exchangeable disulfide bonds. ChemistrySelect2020; 5: 4608–4618.
26.
WangXWeiYYChenD,et al.Synthesis and properties of room-temperature self-healing polyurethane elastomers. J Macromol Sci Part A-Pure Appl Chem2017; 54: 956–966.
27.
QianYQAnXWHuangXF, et al.Recyclable self-healing polyurethane cross-linked by alkyl diselenide with enhanced mechanical properties. Polymers (Basel)2019; 11: 73.
28.
LiuMCZhongJLiZJ, et al.A high stiffness and self-healable polyurethane based on disulfide bonds and hydrogen bonding. Eur Polym J2020; 124: 109475.
29.
LingLLiJHZhangJP, et al.Self-healing and shape memory linear polyurethane based on disulfide linkages with excellent mechanical property. Macromol Res2018; 26: 365–373.
30.
HeJSongFFLiX, et al.A novel kind of room temperature self-healing poly(urethane-urea) with robust mechanical strength based on aromatic disulfide. J Polym Res2021; 28: 22.
31.
SongKYeWJGaoXC, et al.Synergy between dynamic covalent boronic ester and boron–nitrogen coordination: strategy for self-healing polyurethane elastomers at room temperature with unprecedented mechanical properties. Mater Horizons2021; 8: 216–223.
32.
LiYLiWSunA, et al.A self-reinforcing and self-healing elastomer with high strength, unprecedented toughness and room-temperature reparability. Mater Horizons2021; 8: 267–275.
33.
WangMHZhouJHJiangXL, et al.Preparation of mechanically robust and autonomous self-healable elastomer based on multiple dynamic interactions. Eur Polym J2021; 146: 110257.
34.
FanWHJinYHuangYH, et al.Room-temperature self-healing and reprocessing of diselenide-containing waterborne polyurethanes under visible light. J Appl Polym Sci2019; 136: 47071.
35.
ZhangTGaoSYuJ, et al.Preparation and performance of self-healing SBS modified bitumen based on dynamic disulfide bonds. Constr Build Mater2023; 397: 132394.
36.
LiMFangHYZhangC, et al.Study on the new polyurethane material suitable for foaming in water. Constr Build Mater2022; 354: 129163.
37.
WangPDengGHZhouLY, et al.Ultrastretchable, self-healable hydrogels based on dynamic covalent bonding and triblock copolymer micellization. ACS Macro Lett2017; 6: 881–886.
38.
DingSJZhangJZhuGC, et al.Rationally constructed surface energy and dynamic hard domains balance mechanical strength and self-healing efficiency of energetic linear polymer materials. Langmuir2021; 37: 8997–9008.
39.
LaiJCJiaXYWangDP, et al.Thermodynamically stable whilst kinetically labile coordination bonds lead to strong and tough self-healing polymers. Nat Commun2019; 10: 1164–1172.
40.
XuXXYuanYJinSQ, et al.Study on polyurethane elastomer modification for improving low-temperature resistance of high-capacity polyurethane elastomeric bearing for bridges. Constr Build Mater2022; 347: 128625.
41.
DahlkeJZechelSHagerMD, et al.How to design a self-healing polymer: general concepts of dynamic covalent bonds and their application for intrinsic healable materials. Adv Mater Interfaces2018; 17: 1800051.
42.
TuJXuHXiangGF, et al.Highly stretchable, high efficiency room temperature self-healing polyurethane adhesive based on hydrogen bonds – applicable to solid rocket propellants. Polym Chem2021; 12: 4532–4545.
43.
TuHJZhouMGuY, et al.Conductive, self-healing, and repeatable graphene/carbon nanotube/polyurethane flexible sensor based on Diels-Alder chemothermal drive. Compos Sci Technol2022; 225: 109476.
