Polymers
·
2024
·Vol. 16
·期 21
·3045
·
IF 4.7
Hairui Wang,Lan Cao,Xiaolei Wang,Xiurui Lang,Wenwen Cong,Long Han,Hongyu Zhang,Huibin Zhou,Jujie Sun,Chengzhong Zong
Polyurethane (PU) plays a critical role in elastomers, adhesives, and self-healing materials. We selected the most commonly used aromatic isocyanates, 4,4′-methylene diphenyl diisocyanate (MDI) and tolylene-2,4-diisocyanate (TDI), and the most commonly used aliphatic isocyanates, hexamethylene diisocyanate (HDI), isophorone diisocyanate (IPDI), and dicyclohexylmethane-4,4′-diisocyanate (HMDI), as raw materials, combined with polytetramethylene ether glycol (PTMG) and 1,4-butanediol (BDO) to successfully synthesize five PU materials. The effects of isocyanate structure on polymerization rate, hydrogen bonding, thermal properties, phase separation, wettability, self-healing performance, adhesion, and mechanical properties were systematically investigated. The results show that isocyanates with higher symmetry facilitate hydrogen bonding, but excessive flexibility and crystallinity may inhibit its formation. MDI-based PU exhibits the highest hydrogen bonding index (HBI) of 4.10, along with the most distinct phase separation and the highest tensile strength of 23.4 MPa. HMDI-based PU demonstrates the best adhesion properties, with the highest lap shear strength of 7.9 MPa, and also exhibits excellent scratch healing ability. IPDI-based PU shows good self-healing performance, recovering 88.7% of its original tensile strength and 90.6% of its original lap shear strength after heating at 80 °C for 24 h. Furthermore, all the samples can be reprocessed by melt or solution methods, showing excellent recyclability.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2025
·Vol. 32
·期 4
·1-14
·
IF 2.8
Xian Changqing,Deng Tao,Sun Bocun,Yang Wenbo,Li Boyan,Li Youbing,Xia Tian,Yang Chaolong,Yang Yi
Self-healing polyurethanes are garnering attention as a smart material, and has significant application potential in aerospace, biomedical, and electronics fields. In this paper, castor oil is selected as a soft segment in place of petroleum-based polyol to enhance the mechanical properties of polyurethane while improving the mobility of molecular chains. Meanwhile, a polyurethane with good self-healing properties was successfully prepared by selecting 2,2`-Diaminodiphenyl disulfide (DTDA) containing disulfide bonds as a chain extender. As the proportion of DTDA increases, the initial thermal decomposition temperature of polyurethane decreases by 21°C. Cutting and tensile tests confirmed the high mechanical properties and self-healing characteristics of the polyurethane network. And the self-healing efficiency of the polyurethane materials was improved by prolonging the healing time and increasing the healing temperature. As the content of disulfide bonds and hard segments increased, the tensile strength of polyurethane increases progressively, the elongation at break decreased, and the R(stress) and R(strain) of each specimen tended to increase and then decrease. The healing efficiency of the specimen with a disulfide bond content of 13.45% was optimal, with both R(stress) and R(strain) reaching more than 99%.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Surface Topography-Metrology and Properties
·
2022
·Vol. 10
·期 4
·045004
·
IF 2.185
Fuliang Ma,Luli Shen,Zhixiang Zeng
In recent years, the development of the slippery liquid-infused porous surface (SLIPS) for metal corrosion protection has attracted extensive attention. The current construction method of SLIPS micro-nano structure has certain limitations. In this paper, a porous structure was firstly constructed by electroplating nickel based on the hydrogen bubble template method, and then the porous structure was modified by 1H, 1H, 2H, 2H-perfluorodecyltriethoxysilane (PFDS) to obtain the superhydrophobic coating, and finally, The SLIPS coating was obtained by infusing perfluoropolyether (PFPE) on the basis of superhydrophobic coating. After immersed in 3.5 wt% NaCl solution for 4 weeks, the WCA of SLIPS constructed in this paper only decreased from 121° to 114°. Importantly, the corrosion resistance of SLIPS was enhanced by one and three orders of magnitude compared with SHC and Cu substrate. In addition, it was worth mentioning that the SLIPS also exhibited a superior self-healing property even after several scratching healing cycles. The simple method of building porous structures in this paper will promote the further development of the SLIPS coating and its application in engineering.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
DOI
高影响因子
JOURNAL OF POLYMERS AND THE ENVIRONMENT
·
2019
·Vol. 28
·期 2
·647-656
·
IF 2.765
Feng Libang,Bian Yaohui,Chai Changsheng,Qiang Xiaohu
Given its thermal reversibility, high yield, and minimal side reactions, the Diels–Alder (DA) reaction is a particularly desirable technique for the preparation of polymeric materials with heat-stimulated self-healing properties. A linear self-healing polyurethane containing thermally reversible DA bonds (PU-DA) was developed in this study. Results revealed that the introduction of DA bonds conferred outstanding mechanical property and thermal reversibility to PU-DA films. Thus, the as-prepared PU-DA films demonstrated excellent self-healing performance. The self-healing behavior of the PU-DA films under various heat treatments was examined through qualitative observation and quantitative measurements. The PU-DA underwent self-repair through the combination of two healing actions, i.e., the thermal movement of molecular chains and the thermally reversible DA reaction. Moreover, the self-healing behavior of the PU-DA was repeatable, and the PU-DA continued to present high strength even after undergoing three damage–repair cycles at the same site. In addition, the as-prepared PU-DA exhibited excellent macro-scale self-healing behavior, and it endowed the PU-DA presented reprocessing performance. The PU-DA can be recycled given its excellent self-healing and outstanding reprocessing performances.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Miao Yuan,Saidan Wang,Hongxia Du,Yating Sui,Xiangjing Zhang,Song Zhao,Qiushi Li,Shaojie Liu,Xuteng Xing,Erjun Tang
Two-dimensional Ti 3 C 2 T x MXene, with a large specific surface area, high chemical stability and excellent barrier properties, has become a promising of anti-corrosion filler in organic coatings. However, the poor dispersion and compatibility in organic coatings restrict its efficient application. To this end, L-histidine (L-His) corrosion inhibitor was grafted on the 3-aminopropyl triethoxysilane (APTES) functionalized Ti 3 C 2 T x MXene surface, under the electrostatic attraction between the carboxylate and protonated aminopropyl groups. The obtained APTES-Ti 3 C 2 T x MXene@L-His cannot only accelerate the dispersion of Ti 3 C 2 T x MXene filler, but also greatly promote the anti-corrosion property and service lifetime of coatings through combining the physical shielding effect of MXene laminate structure with active anti-corrosion function of L-His corrosion inhibitor. Results show that amino-functionalized Ti 3 C 2 T x MXene can maintain homogeneous in epoxy resin for 300 h, enhancing its dispersion in epoxy coating. Moreover, APTES-Ti 3 C 2 T x MXene@L-His composite can achieve the continuous release of L-His for 3000 min, and additional acid-base dual response property, the releasing rate of L-His is significantly accelerated in acidic or alkaline solutions. The total loading amount of L-His in APTES-Ti 3 C 2 T x MXene@L-His composite is about 3 %. Furthermore, the practical composite coating containing APTES-Ti 3 C 2 T x MXene@L-His also exhibits the excellent anti-corrosion and certain self-healing properties, such as its |Z 0.01 Hz| value remains above 10 10 Ω·cm 2 during the 40 d immersing in 3.5 NaCl solution, which is 3 orders of magnitude higher than that of pure epoxy coating. This work extends the great significance for Ti 3 C 2 T x MXene based composite coatings application of in the field of anti-corrosion.
研究领域:
材料科学
·
腐蚀与防护
·
有机涂层改性
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2018
·Vol. 136
·期 6
·47039
·
IF 1.901
Shan Cao,Shouhai Li,Mei Li,Lina Xu,Haiyang Ding,Jianling Xia,Meng Zhang,Kun Huang
Phenolic hydroxyl gave thermal self-healing ability to phenolic polyurethanes in our previous study. To explore, the feasibility of preparing self-healing polyurethanes through polyphenols with different substituents. Urushiol, propyl gallate, catechol, and tert-butylhydroquinone were chosen for preparation of four phenolic polyurethanes, and the different factors at the structures of these polyphenols worked together led the different properties and self-healing ability. The peak temperatures of these four polyurethanes were determined by DSC in the following order: PTHFTDI-Urushiol < PTHFTDI-Catechol < PTHFTDI-Propyl gallate < PTHFTDI-Tert-butylhydroquinone. Variable-temperature FT-IR spectra displayed that PTHFTDI-Propyl gallate with electron-withdrawing substituent exhibited the lowest decomposition and healing temperatures. Meanwhile, based on TGA analysis, lower decomposition temperature suggested lower thermostability; and PTHFTDI-Urushiol with electron-donating substituent exhibited the best thermostability. At the same temperature, the healing abilities of the three polyurethanes were ranked as follows: PTHFTDI-Catechol < PTHFTDI-Urushiol < PTHFTDI-Propyl gallate. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 47039.
研究领域:
材料科学
·
化学
✓ 已验证
DOI
高影响因子
ENVIRONMENTAL RESEARCH
·
2024
·
IF 7.7
Shenghui Liu,Jintuan Zhang,Anette Theliander,Weibin Chen,Junyong Wu,Leixin Wu
Based on the dye/salts separation efficiency and membrane injury caused by serious pollution of dye/salts wastewater, this study constructed a 2D tight ultrafiltration membrane that could both solve the membrane injury problem and improve the dye/salts separation efficiency, the compatibility of good self-healing performance and penetration performance by 2D material magnesium-aluminum Layered double hydroxide (MgAl-LDH). The self-repairing of physical injury was achieved through the swelling effect of AMPS-PAN, this property was proved by permeate flux, the retention performance of salts in dye/salts solution, the comparison of scanning electron microscope (SEM), and the mechanical strength after physical injury. The healing of chemical injury occured through the reaction of C C and polyethersulfone chain breakage, which was confirmed by X-ray photoelectron spectroscopy (XPS), permeate flux, the retention performance of salts in dye/salts solution, and mechanical property. The high separation efficiency of dye/salts was achieved through 2D material MgAl-LDH, which was proved by separation selectivity ɑ. The compatibility of good self-healing performance and penetration performance was obtained by 2D material MgAl-LDH, which was proved by the penetration and self-healing performance. Morever, the membrane illustrated excellent both permeability and dye/sals separation efficiency, just like the permeate flux, the retention performance of sodium sulfate in methyl blue/sodium sulfate solution, the retention performance of Na 2 SO 4 in methyl blue/Na 2 SO 4 solution, the retention rate of methyl blue were 99.1 L/m 2 h, 12.5%, 7.9%, 97.7%, respectively. The results of pollution index and contact angle also proved that the membrane had anti-pollution performance.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED COMPOSITE MATERIALS
·
2024
·
IF 1.8
Shuai Qi,Sai Gong,Chang Liu,Shenzhen Li,Bo Li,Shiwei Xie,Xiao Zhang
Intrinsic self-healing waterborne polyurethane (WPU) is an environmentally friendly, economically viable, and practical novel intelligent material. However, the key to achieving practical applications lies in the remote activation of repair in self-healing materials and the excellent mechanical properties of the matrix. In this study, we introduce quadruple hydrogen bonding in the polyurethane backbone. We have incorporated a novel two-dimensional sheet-like material, MXene, to achieve visible light remote-driven self-healing of material hydrogen bonds while enhancing the material’s mechanical properties. By utilizing the MXene supernatant, this approach not only resolves the issues of poor stability and easy sedimentation of MXene nanosheets in water-based polymers but also helps to prevent resource wastage. Our research results demonstrate that the composite film exhibits a tensile strength of 6.55 MPa and a fracture elongation of 604%. Additionally, quadruple hydrogen bonds in the WPU chains enable rapid self-healing of microcracks under visible light irradiation at 300 mW/cm2, with complete disappearance within 80 min.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Yanhan Tao,Hui Yang,Zhijun Liu,Guoming Yuan,Kunxin Wang,Kun Wu,Jun Shi
One kind of liquid crystal monomer (LM) based on a biphenyl mesomorphic unit was synthesized from 4,4′-biphenyldicarboxaldehyde and 4-amino-3-methylphenol. Then two films (LM/TPTMP and LM/PETMP) were prepared by reacting the two thiols (TPTMP and PETMP) with the liquid crystal monomer (LM), respectively. These two films simultaneously exhibit intrinsically high thermal conductivity and intrinsic self-healing properties. Due to the presence of biphenyl liquid crystal units in LM and its highly symmetrical structure, a distinct nematic liquid crystal phase can be observed through a polarized optical microscope when heated to the liquid crystal phase transition temperature. The crystallite size of LM was calculated as 37 nm by an X-ray diffractometer (XRD). The films exhibit outstanding thermal conductivity, with LM/TPTMP achieving a thermal conductivity in the horizontal direction (λ∥) of 0.700 W/(m·K), which is significantly higher than that of epoxy resin-based intrinsic thermal conductivity materials in the range of 0.2–0.4 W/(m·K). The introduction of thiol flexible segments endowed the materials with good mechanical strength, with LM/PETMP demonstrating a tensile strength of 4.74 MPa and an elongation at break of 42.57%. Furthermore, the incorporation of dynamic imine bonds imparted excellent self-healing properties to the films. Specifically, LM/PETMP could retain 73% and 65.2% of its original tensile strength after one and three cycles of self-healing behavior, respectively. This type of high intrinsic thermal conductivity (λ) and excellent intrinsic self-healing performance film is expected to solve the problems of safety and service life of high-precision smart devices.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Chenrui Zhang,Qingchuang Lu,Meng Song,Zhenyang Luo,Lei Duan,Yanlong Luo
Many high-strength polyurethane materials have been developed in the past, but combining other functionalities such as high transparency, adhesion, and self-healing properties is still a great challenge. We prepare a mechanically robust polyurethane elastomer with high transparency and self-healability. The relationship between its structure and properties is elaborated. Acylsemicarbazide (ASCZ) and urethane groups are introduced into the hard segments of the polyurethane elastomer, and by modulating the spacer groups between the ASCZ and urethane groups, the fine modulation for the hydrogen bonding density and the hard domain size is realized. By the exquisite regulation of molecular structure, the HMDI-SPH elastomer with sebacic dihydrazide (SPH) as the chain extender, polytetramethylene ether glycol (PTMEG) as the soft segments, and methylene-bis(4-cyclohexyl isocyanate) (HMDI) as the isocyanate can achieve a high elasticity due to the rich and hierarchical hydrogen bonds. Such hydrogen bonds impede the crystallization of PTMEG and facilitate the formation of homogeneously distributed hard-phase microdomains. The HMDI-SPH elastomer exhibits good mechanical robustness (tensile strength of 45.7 MPa, toughness of ~140.8 MJ m −3 ), transparency (transmittance > 95%), and self-healing (self-healing efficiency of 86.6%). Meanwhile, HMDI-SPH has good adhesive strength on a variety of substrates such as walnut (~10.81 MPa) and steel (~14.60 MPa).
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Powder Materials
·
2022
·
IF 0
Siqi Zhan,Wenhe Ding,Zhongliang Sun,Wei Li,Tiening Xu,Shiwei Wang,Mingyao Zhang
How to improve the stability and processability of organic-inorganic hybrid perovskite quantum dots (OHPQD) is an important topic in recent research. In this work, the stability and machinability of OHPQD were improved by blending with PU elastomer. The CsPbBr 3 −PU composites can be achieved easily by pouring molding process with rather excellent humidity and thermal stability. The tensile strength of 14 MPa and elongation of 580% at break of PU/CsPbBr 3 elastomer composites with self-repair properties were obtained, which was attributed to the introduction of disulfide bonds. It lays a foundation for the application of OHPQD.
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
PROGRESS IN ORGANIC COATINGS
·
2022
·
IF 6.206
Hongxuan Yang,Kaili Jin,Helan Wang,Zhuizhui Fan,Tengfei Zhang,Ziqiang Liu,Zaisheng Cai
Hydrophilic anti-fogging coating has become a research hotspot due to its good anti-fogging performance and easy preparation. In this work, a zwitterionic anti-fogging coating with anti-fouling and self-healing properties was prepared by (Methacryloyloxy)ethyldimethyl-(3-sulfopropyl) (SBMA) and Itaconic acid (IA). And the antifogging performance of the coating has been improved due to -COOH from IA. The high light transmittance (over 95%) can be observed after anti-fogging test. We use amide bonds to connect the coating to the glass slide, which greatly improves the water resistance and durability. The coated glass can maintain anti-fogging property after being immersed in water for 7 days or stored for over 200 days. Results show that the anti-fogging coating has good self-healing function and oil stain resistance. The contact angle of the coated glass slide is 8.17°, and shows a good super hydrophilicity. This anti-fogging coating provides great potential for applications in medical, food industry, transportation .etc.
研究领域:
材料科学
·
表面化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）