ACS Applied Materials & Interfaces
·
2017
·
IF 7.504
Xin Ao,Zhaoyin Wen,Xiangwei Wu,Tian Wu,Meifen Wu
The role of the Ni3S2 layer on Ni particles in the electrochemical performance of Na/NiCl2 cells with the addition of sulfur into the cathode is studied. It was found that the Ni3S2 layer could be in situ generated on nickel particles and exhibit a self-repairing function during cycling when sulfur exists in the cathode due to the reaction between the sulfur and nickel particles. The self-repairing function of the Ni3S2 layer could enhance the blocking effect and improve the battery cycle performance. The capacity of the cell with the optimum amount of sulfur (with self-repairing function) after 50 cycles is about 12% greater than that of the cell with the optimum level of Ni3S2 (without self-repairing function). The effect of the self-repairing function of the Ni3S2 layer is determined by the amount of sulfur in the cathode.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Journal of Coatings Technology and Research
·
2022
·Vol. 20
·期 2
·713-724
·
IF 2.339
Cai Zhentao,Li Chunping,Zhang Daquan,Li Jin,Gao Lixin
Abstract Polyurethanes (PUs) are a polymer material with a wide range of applications and excellent mechanical properties. In this work, a modified polyurethane coating with the self-healing function is developed via the reaction between polytetrahydrofuran (PTMG), 2,4-toluene diisocyanate (TDI) and α-lipoic acid. The coatings are characterized by SEM and FTIR. The protection of the prepared coating for copper in 3 wt.% NaCl solution is investigated by the electrochemical measurements and the surface self-healing tests. The coating has stable protection from corrosion of the copper substrate in corrosive medium and shows a good self-healing ability. The healing behavior in morphology and corrosion resistance can be observed when heated above 60°C. Graphical abstract
研究领域:
材料科学
·
电化学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2023
·
IF 6.6
Huijie Huangfu,Xugeng Guo,Ning Li,Ye Xiong,Yafei Huang,Jinglai Zhang,Li Wang
Smart coatings play crucial roles in realizing excellent corrosion protection on metals and alloys. However, the preparation of smart composite coatings exhibiting self-reporting and self-healing dual function still remains a challenge. Herein, a novel smart composite coating was successfully fabricated by incorporating the ionic liquid grafted carboxylated carbon nanotube and phenolphthalein into a micro-arc oxidation coating (MAO/PP/CCNT-IL) for AZ31B Mg alloy protection. The electrochemical tests including potentiodynamic polarization and electrochemical impedance spectroscopy reveal that the MAO/PP/CCNT-IL composite coating shows the best corrosion protection on the AZ31B Mg substrate among all coatings prepared in this work. In addition, the salt spray experiment in 5 wt% NaCl solution suggests that the occurrence of conspicuous pink within only 12 min can rapidly warn microdamage and microsurface damage, exhibiting a self-reporting effect. Meanwhile, the smart coating also presents outstanding healing property by reacting CCNT-IL with Mg ions from the substrates to generate the chelates to be covered on the damaged area. Such a smart coating offers a feasible strategy for prolonging the service lifetime of Mg alloys through a convenient, economical and effective way with a promising application in the field of material protection.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Hao Wang,Xing Zhou
With the development of communication technology, electromagnetic wave pollution is becoming more and more serious, reliable electromagnetic wave absorbing materials are needed. In this work, we modified the surface of hollow structure Fe 3 O 4 with amino group to obtain Fe 3 O 4 @SiO 2 -NH 2 , and then attached it to the molecular chain of self-healing polyurethane (PU) by chemical bonding to obtain PU-Fe 3 O 4 @SiO 2 -NH 2 . The sedimentation of nanoparticles in polyurethane solution can be effectively reduced by connection of chemical bonding between Fe 3 O 4 @SiO 2 -NH 2 and PU. 20 wt% Silver-plated carbon fiber (Ag@CF) conductive fillers were added into PU-Fe 3 O 4 @SiO 2 -NH 2 solution, self-healing electromagnetic wave absorbing material (Ag@CF/ PU-Fe 3 O 4 @SiO 2 -NH 2 ) was prepared finally. EDS mapping graphs showed that Fe 3 O 4 and Ag@CF nanoparticles were uniformly distributed in the PU matrix. When the content of Fe 3 O 4 @SiO 2 -NH 2 was 1.86 wt%, the tensile stress was 3.21 MPa, elongation at break was 574%, and the self-healing efficiency was 54% for Ag@CF/ PU-Fe 3 O 4 @SiO 2 -NH 2 . The minimum reflection loss (RL) was −71.6 dB with the thickness of 1.6 mm at 8.5 GHz, and the mechanism of absorbing microwave was analyzed. This shows that our material had good mechanical property, self-healing property and microwave absorbing performance.
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
PROGRESS IN ORGANIC COATINGS
·
2024
·
IF 6.5
Wenlong Li,Jianwen Guo,Wei Tian
Cavitation and corrosion critically influence the behavior of offshore engineering equipment's dynamic components. To solve this problem, a polyurea coating (H-DAPU) with cavitation resistance, corrosion protection, and self-repairing capabilities based on DA bonds was successfully prepared. The coating has the triple effects of anti-cavitation, anti-corrosion, and self-repairing by adding 4-trifluoromethoxyphenyl isocyanate-functionalized reduced graphene oxide (HRGO) to the polyurea coating (soft segment molecular weight is 650 g/mol, and the content of the hard segment is 40 wt%) with the optimal mechanical properties. The excellent compatibility between HRGO and the polyurea coating increases H-DAPU's stress resistance by 8 MPa compared to the prototype. The coating's superior mechanical properties significantly enhance its anti-cavitation property. After 48 h of continuous cavitation, the mass loss of H-DAP is 6.3 mg, 37.6 % higher than that of the prototype. Additionally, the barrier effect of HRGO enables H-DAPU to have excellent corrosion protection. After 10 days of exposure to 3.5 wt% NaCl solution, the low-frequency modal value of H-DAPU is still 3.2 × 10 7 Ω·cm 2 . Finally, H-DAPU exhibited excellent photothermal healing ability, achieving 92.2 % self-repair efficiency under NIR exposure for 60 s. This research provides a new method for enhancing long-lasting corrosion protection in offshore engineering equipment's power components.
研究领域:
材料科学
·
海洋工程
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Lei Cai,Xiang Song,Cheng-Bao Liu,Lan-Yue Cui,Shuo-Qi Li,Fen Zhang,M. Bobby Kannan,Dong-Chu Chen,Rong-Chang Zeng
This work reports the design and preparation of novel organic (polyvinyl alcohol, PVA)-inorganic (neodymium nitrate, Nd(NO 3 ) 3 ) hybrid coatings on micro-arc oxidation (MAO) coating for magnesium (Mg) alloy corrosion protection . X-ray diffractometer , X-ray photoelectron spectroscopy, fourier transform infrared spectroscopy , field emission scanning electron microscope , Energy Dispersive X-ray spectrometer and surface roughness were applied to characterize the chemical composition and surface morphology of the coatings. The corrosion resistance of the coatings was evaluated by electrochemical and salt spray tests. The results suggested that the formation of PVA-Nd 3+ and PVA-Mg 2+ complexes promoted the enrichment of Nd 3+ on the surface, and thereby improved the sealing quality and compactness of the coating. Interestingly, when the coating was damaged, the Nd 3+ ions were transformed to their carbonates and covered the active sites, and thus exhibiting self-healing function. Further, the corrosion resistance of PVA-Nd 3+ modified MAO composite coating on AZ31 Mg alloy was improved.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Yuqing Li,Daquan Zhang,Jin Li,Jiamin Lu,Xinrui Zhang,Lixin Gao
An anti-corrosion coating is prepared by reaction of alpha-lipoic acid (ALA) with di-isopropenyl benzene (DB), followed by the addition of Cu 2+ ions. This coating can heal its scratching within 2 h in air and 12 h in solution without external intervention. The corrosion inhibition effect of the DB-ALA-Cu 2+ coating was demonstrated by electrochemical measurements. It shows excellent performance against copper corrosion in 3 wt% NaCl solution. The self-healing mechanism is attributed to the formation and exchange of hierarchical non-covalent and covalent bonds . This coating extends significantly its service life and has potential applications in the metal anti-corrosion area.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2020
·
IF 3.784
Hanaa Soliman,Junyu Qian,Shuai Tang,Peng xian,Yingqi Chen,Abdel-Salam Makhlouf,Guojiang Wan
The polymerized Hydroxyquinoline (HQ) coatings incorporated with corrosion inhibitor nano-Graphene Oxide (GO) particles were fabricated on treated magnesium AZ31 alloy. The effect of surface treatment of AZ31 using either oxidation or phosphating was much more effective than GO embedment on the corrosion resistance and self-healing functionality. Surface treatment prior to GO/HQ deposition plays a vital role in initiating more anchoring bonds between molecules to fasten any scratch healing. The anticorrosion behavior of the GO/HQ hybrid coating will be discussed in the light of SEM, XRD , XPS and FTIR analysis.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Wei Tian,Shuai Wang,Cheng Wang,Haoran Xu,Yunfei Zhao,Huichao Jin,Limei Tian
Erosion and fouling are important factors that affect the performance of power components of large cargo ships. Inspired by animal cartilage tissue, an epoxy modified polyurethane composite coating (FD-EPU) with reproducible self-healing properties was successfully prepared. FD-EPU was endowed with excellent resistance to cavitation, corrosion, and fouling due to the presence of functional reduced graphene oxide (FrGO) and 2-octyl-4,5-dichloroisothiazolinone (DCOIT). The introduction of FrGO with multiple hydrogen bonds into coatings increased the tensile strength of FD-EPU by 3.56 MPa and exhibited excellent cavitation resistance (with a mass loss of 4.7 mg under continuous cavitation for 60 h). In addition, the barrier effect of FrGO enabled FD-EPU to possess outstanding anticorrosion ability. After being immersed in 3.5 wt% NaCl for a duration of 15 days, the |Z |0.01Hz value of FD-EPU was found to remain at 9.18 × 10 9 Ω·cm 2 . The modification of epoxy resulted in FD-EPU coatings with improved adhesion by 53.5 % compared to non-modified coatings, with a bond strength of 23.8 MPa on stainless steel. The incorporation of DCOIT and FrGO endowed FD-EPU with good antifouling properties (removal of more than 97.5 % of bacteria and removal rate of microalgae up to 96.2 %). Furthermore, FD-EPU exhibited outstanding opto-thermal self-healing capability, with a self-healing efficiency of 61 % after 30 s of near-infrared light irradiation. This work provides a new inspiration for the protection of large cargo ship power components.
研究领域:
材料科学
·
海洋工程
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2023
·
IF 4
Hao Yu,Shao-Kun Song,Zi-Yan Xu,Yang Ge,Wei Geng,Xiao-Yu Yang
Marine engineering materials face the challenges of corrosion and biofouling. In this study, a graphene nanofluid has been prepared by dispersing modified graphene in a common lubricant. Porous surfaces on Q235 carbon steel have been generated by applying the highly efficient texturing method—breath figure method and then infused with the graphene nanofluid. The coating thus obtained showed high stability, reduced oil-phase leaching, and a self-healing function. Moreover, the slippery coating exhibited a more than five orders of magnitude superior anti-corrosion performance and improved anti-biofouling properties. The developed graphene nanofluid coating has great potential for applications involving the protection of surfaces exposed to the marine environment.
研究领域:
材料科学
·
海洋工程
·
表面工程
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Hao Zhang,Xi Qi,Xiaoyu Zhang,Yujie Liu,Ning Li,Fanglei Zeng,Shengling Jiang,Jianning Ding
It is difficult to recycle classic thermosetting plastics. Although some of them can be reprocessed, the mechanical properties decline linearly after processing. In addition, most thermosetting plastics are not environmentally friendly and difficult to degrade, resulting in a lot of pollution and limiting their practical application potential. In this paper, the prepolymer is synthesized by using castor oil (CO), hydroxyl terminated polydimethylsiloxane (PDMS-OH), and toluene diisocyanate (TDI). Using 4,4'-diaminodiphenyl disulfide (ODD) as a chain extender with dynamic disulfide bond and aniline (An) as a blocking agent, polysiloxane-aminoester (SiCPUO) with recyclable function under DMF induction was prepared. The effect of the amount of rigid chain extender (ODD) containing disulfide bond on the properties of SiCPUO was studied, its heat resistance will first increase and then decrease with the increase of ODD content, especially the mechanical properties are more obvious, this trend has never been reported before; the mechanical properties and recyclability of SiCPUO are tested, and the comprehensive performance of SiCPUO2 is the best, the tensile strength is 0.84 MPa and the elongation at break was 65.81%; the solubility test of different solvents showed that it has recyclability, recovery rate is 95%;the material has self-healing function, the repair efficiency is up to 95%.
研究领域:
材料科学
·
环境科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2021
·Vol. 11
·期 6
·3371-3379
·
IF 3.361
Zesheng Chen,Kun-huan He,Runzhi Wei,Yiju Lv,Zheng Liu,Guo-Cheng Han
A new metal–organic framework (MOF) compound [Mn2(2,2′-bca)2(H2O)2]n (Mn-MOFs) was successfully synthesized by solvothermal method, and Mn-MOFs@Zn material was prepared by loading zinc phosphate onto Mn-MOFs by ball milling, then Mn-MOFs@Zn was added to the water-based acrylic paint to prepare Mn-MOFs@Zn@acrylic coating. The AC impedance test results showed Mn-MOFs@Zn@acrylic coating has higher corrosion inhibition performance and stability to mild steel when compared with blank coating. The impedance modulus of the blank coating in the low frequency region decreased by 90%, and the Rct showed a trend of first increasing and then decreasing over time, the maximum Rct was only 303.8 Ω, which was only Mn-MOFs@Zn@acrylic coating one-seventh of the Rct value. The artificial scratch experiment showed that the Mn-MOFs@Zn@acrylic coating only slightly corrodes at the scratches, because Mn-MOFs@Zn material made the coating a self-repairing function and improved the durable anticorrosion performance of the acrylic coating.
研究领域:
材料科学
·
腐蚀与防护
·
表面工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）