Progress in Organic Coatings最新文献

{"title":"Corrigendum to “Nature-inspired mechano-bactericidal nanostructured surfaces with photothermally enhanced antibacterial performances” [Prog. Org. Coat. 182 (2023) 107599]","authors":"","doi":"10.1016/j.porgcoat.2024.108810","DOIUrl":"10.1016/j.porgcoat.2024.108810","url":null,"abstract":"","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrosion protection of mild steel via cerium nitrate loaded acrylic-vinyl polysilazane based hybrid coatings","authors":"","doi":"10.1016/j.porgcoat.2024.108831","DOIUrl":"10.1016/j.porgcoat.2024.108831","url":null,"abstract":"<div><div>This study presents an efficient anticorrosive coating based on an organic-inorganic hybrid polymer composed of methyl methacrylate, styrene, tert-butyl acrylate, and vinyl polysilazane. The synthesized resin exhibits excellent thermal resistance and stability, as confirmed by thermogravimetric analysis (TGA). Additionally, leveraging the resin's highly alkaline nature, cerium oxide (CeO₂) nanoparticles were doped in situ within the polymer matrix. The hybrid resins were subsequently applied to mild steel panels using a dip-coating technique. The resulting coatings are transparent, flexible, thin, pore-free, and possess low surface roughness (&lt;2.62 nm), along with good thermal stability (&gt;350 °C). Their remarkable anticorrosive performance and durability are attributed to forming a highly crosslinked acrylic-polysilazane network, combined with a cerium oxide protective barrier layer that adheres to the substrate. Furthermore, the cerium ions suppress both cathodic and anodic corrosion reactions, enhancing the corrosion resistance. Notably, the coating system containing 2 wt% cerium achieved a high impedance value of 10⁶ Ω cm², corresponding to a corrosion rate of 0.112 × 10⁻⁵ mm/year. This study demonstrates that these acrylic-vinyl polysilazane coatings, incorporating ceria as a corrosion inhibitor, offer a promising alternative to conventional protection systems.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142323037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced mechanical and tribological performance of epoxy nanocomposite coating by non-covalent bonded h-BN nanosheets/graphene oxide","authors":"","doi":"10.1016/j.porgcoat.2024.108826","DOIUrl":"10.1016/j.porgcoat.2024.108826","url":null,"abstract":"<div><div>Developing high-performance of organic solid lubricating coating is of great significance for extending the life of the moving systems/parts. Herein, the non-covalently modified h-BN nanosheets by graphene oxide (BNNSs/GO) were elaborately constructed to enhance the mechanical, friction and wear properties of epoxy nanocomposite coating. The microstructure feature and chemical composition of BNNSs/GO were determined by various spectroscopic techniques. The tribological performance of nanocomposite coatings were tested using ball-on-disc friction tester, and 440C stainless-steel ball with diameter of 8 mm was used as the counterface material. The GO nanosheets acted an active platform for BNNSs, which improved the dispersion of BNNSs and interface interaction with epoxy. The anchoring BNNSs could break the strong π-π, and van der Walls forces among GO nanosheets. The thickness of epoxy nanocomposite coatings was about 60 μm. And the epoxy-1.0 wt%BNNSs/GO demonstrated much higher hardness and elastic modulus than epoxy, increased by 112.62 % and 53.37 %, respectively. The coefficient of friction (COF) and wear rate of epoxy-1.0 wt%BNNSs/GO were the lowest, with a reduction of 89.7 % and 97.5 %, respectively. The synergistic lubricating mechanism of epoxy-BNNSs/GO coating was proposed, which could provide a new light on the design of high antifriction and wear resistance of organic nanocomposite coating.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142323038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of the organic coating thickness on water uptake measurements by EIS","authors":"","doi":"10.1016/j.porgcoat.2024.108823","DOIUrl":"10.1016/j.porgcoat.2024.108823","url":null,"abstract":"<div><div>In this work, we studied the effect of the coating thickness on the water uptake measured by electrochemical impedance spectroscopy (EIS). A model epoxy system (DGEBA/JeffamineD230), without pigment, was chosen to obtain free-films and coatings on aluminium with thicknesses ranging between 50 and 400 μm. The polymer systems were carefully cured above the glass transition temperature and rapidly cooled down to avoid physical ageing. Then, free-films and coatings were immersed at 50 °C and water uptake was measured by gravimetry for free-films and by EIS for coatings. In parallel, the coating swelling was measured by scanning electrochemical microscopy (SECM).</div><div>The results showed that water uptake values for the free-films are close to 2.8 wt% for all tested thicknesses. For the coatings, the Brasher and Kingsbury relation lead to water uptake values that were thickness-dependent, and higher than those obtained with free-films. For thin organic coatings (50 μm), it was proposed that the time analysis of EIS data must consider the time needed to reach the measuring frequency to enhance the quality of water uptake measurements by EIS. For thick organic coatings (370 μm), water uptake values obtained by EIS were found to coincide with those measured for free-films when swelling is considered (introduction of the time-dependent thickness into the Brasher and Kingsbury relation). The discrepancy with thinner coatings was explained by internal stress relaxation that is more important for thinner coatings at the metal/coating interface, leading to more important swelling and water uptake values.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142319663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An integrated approach for developing a durable and superhydrophobic anti-corrosion coating inspired by biomimetic starfish surface structures","authors":"","doi":"10.1016/j.porgcoat.2024.108825","DOIUrl":"10.1016/j.porgcoat.2024.108825","url":null,"abstract":"<div><div>Applying superhydrophobic coatings with excellent anti-corrosion, anti-fouling, self-cleaning, antibacterial, and wear-resistant properties is a promising approach to protect metal surfaces. This study presents a novel and cost-effective approach, inspired by the biomimetic structure of starfish, to develop a durable and superhydrophobic coating. Unlike traditional methods, we introduce a meticulously engineered tetrapodal ZnO@SiO₂-fluorosilane composite that forms a unique hierarchical micro-nano core-shell structure, reducing surface energy and exceptional performance. The formulation combines perfluorooctyl triethoxysilane (FOTS)-modified SiO₂, silicone polyester, and tetrapodal ZnO (T-ZnO) in thermoplastic polyurethane (TPU), resulting in a first-of-its-kind T-ZnO@SiO₂-FOTS (ZSF) coating with superhydrophobic properties, demonstrated by a water contact angle of 160°, a sliding angle of 3°, and the lowest surface free energy of 14.50 mN/m, contributing to excellent anti-corrosion properties (corrosion rate of 1.44 × 10⁻⁶ mm/year) and a corrosion inhibition efficiency of 99.87 %. In addition, the coating exhibits remarkable mechanical durability, adhesion enhancement, and stability against harsh environmental agents, including salt spray, HCl, and NaOH. Our biomimetic approach leverages the starfish-inspired surface design and highly crosslinked interface to enhance resilience, making this coating more robust under real-world conditions. These results provide a promising pathway for the development of multifunctional coating materials suitable for various solid surfaces.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142319667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Antiviral respiratory masks with plasma-functionalized polypropylene textiles for optimal adsorption of antiviral substance","authors":"","doi":"10.1016/j.porgcoat.2024.108827","DOIUrl":"10.1016/j.porgcoat.2024.108827","url":null,"abstract":"<div><div>During the COVID-19 pandemic, face masks were the first line of defense against the spread of infection. However, infectious viruses may remain on medical textiles, potentially serving as an additional source of infection. Due to their chemical inertness, many textiles cannot be enhanced with antiviral functionalities. Through treatment with low-pressure gaseous plasma, we have activated the surface of a medical-grade melt-blown, non-woven polypropylene textile so that it can absorb sodium dodecyl sulfate, an antimicrobial surfactant. Within two hours of contact time, the functionalized textile has been able to inactivate over 7 log₁₀ PFU mL⁻¹ of bacteriophage phi6, a surrogate of enveloped viruses such as SARS-CoV-2, and it has retained its antiviral properties for over 100 days. The functionalized material has not disrupted facial mask filtration efficiency or breathability. In addition, the in vitro biocompatibility testing in accordance with ISO 10993-5 for testing of medical devices has demonstrated that the selected formulation causes no adverse effects on the mouse fibroblast cell line L-929. With the treatment processes that have been completed within seconds, the method seems to have great potential to produce antiviral textiles against future outbreaks.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142319666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Long-lasting anti-corrosion of waterborne epoxy resin synergistic modified with g-C3N4 and pH-responsive polypyrrole nanotubes","authors":"","doi":"10.1016/j.porgcoat.2024.108808","DOIUrl":"10.1016/j.porgcoat.2024.108808","url":null,"abstract":"<div><div>A self-healing coating containing g-C₃N₄-PPynts(BTA)@PDA (CPBP) hybrids was developed to inhibit corrosion in steel. Lamellar g-C₃N₄ and polypyrrole nanotubes were synthesized through direct pyrolysis and the methyl orange-iron chloride reactive self-degradation template method, respectively. Subsequently, benzotriazole (BTA) was incorporated into PPy nanotubes (PPynts) using the vacuum negative pressure technique. PDA (polydopamine) was then polymerized on the nanotube surface acting as a ‘gatekeeper’. Finally, g-C₃N₄-PPynts(BTA)@PDA hybrids were formed by attaching PPynts(BTA)@PDA(PBP) nanocontainers to g-C₃N₄ nanosheets. The synthesized polypyrrole nanotubes exhibited superior loading capacity because of their larger size and could release encapsulated inhibitors in response to pH changes in the microenvironment. In addition, the variations in |Z|_0.01Hz values of CPBP/WEC after 40 days of immersion in 3.5 wt% NaCl solution were evaluated using the EIS test, and the results showed that the failure time of CPBP/WEC was prolonged by 15 days compared with that of WEC. Moreover, the EIS test results at different pH conditions showed that the |Z|_0.01Hz values decreased from 2.601 × 10⁹ Ω cm² to 4.9 × 10⁷ Ω cm² after 40 days of immersion at pH = 3, and decreased from 3.168 × 10⁹ Ω cm² to 7.7 × 10⁷ Ω cm² at pH = 11. The |Z|_{0.01 Hz} values were both two orders of magnitude lower compared to pH = 7, but still three orders of magnitude higher than the WEC at pH = 7, which exhibited high impedance values. Meanwhile, CPBP/WEC were found to have significant self-healing properties using EIS analysis of the scratch coatings, salt spray testing, SEM and EDS analysis of the corroded areas. The experimental results indicate that the incorporation of CPBP provides a new method to improve the service life of epoxy resin.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142319665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on the effect of mechanical and damping properties of polyurea on blast mitigation performance and protection mechanism","authors":"","doi":"10.1016/j.porgcoat.2024.108783","DOIUrl":"10.1016/j.porgcoat.2024.108783","url":null,"abstract":"<div><div>To investigate the influence of mechanical and damping properties of polyurea on blast mitigation performance and elucidate the underlying the protection mechanism, we synthesized two types of flexible polyurea, namely F-T121 and F-T161, as well as CF-Q413t viscoelastic damping polyurea (CF-Q413t) fiber-reinforced based on Q413t viscoelastic damping polyurea (Q413t). Among them, the mechanical properties of CF-Q413t were similar to that of F-T121. The mechanical properties of three types of polyurea were investigated through mechanical property tests conducted at different loading speeds. Dynamic mechanical analysis (DMA) was used to investigate the damping properties of polyurea in different frequency and temperature domains. Blast mitigation performance of different types of polyurea against concrete target slabs was investigated using 75 g trinitrotoluene (TNT) non-contact explosion tests. Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) were utilized to analyze the microscopic damage characteristics, molecular structure changes, and hydrogen bonding behavior in representative areas of blast-damaged coatings, aiming to explore the protective mechanisms offered by polyurea. The results demonstrated that polyurea with high content of hard segment exhibited susceptibility to brittle fracture and inadequate damping performance when subjected to high-speed loading conditions, rendering it unsuitable for structural protection in scenarios involving high-speed loading such as explosions. The damping performance CF-Q413t meets the energy absorption protection against broadband loading with the effective damping frequency domain of 0–10⁴ Hz. The blast mitigation performance of polyurea was primarily determined by its strain rate effect and damping behavior, which enhance the mechanical properties of structures and facilitate the conversion of mechanical energy into internal energy dissipation, respectively. Among the three types of polyurea, CF-Q413t exhibited superior blast protection performance on concrete target slabs with a peak loss factor reaching 0.67. The protective effect against explosions was significantly influenced by the damping properties of polyurea, making it a valuable parameter for assessing protective performance.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142316102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Novel hyperbranched phosphaphenanthrene-terminaled silicon-nitrogen cocuring agent towards high-performance epoxy thermosets","authors":"","doi":"10.1016/j.porgcoat.2024.108828","DOIUrl":"10.1016/j.porgcoat.2024.108828","url":null,"abstract":"<div><div>The exceptional performance of epoxy resins is hindered by their inherent flammability, imposing significant limitations on their industrial applications. Enhancing the flame retardancy of epoxy thermosets while maintaining thermal stability and mechanical properties is crucial for the advancement of flame-retardant composite materials, yet remains a formidable challenge. Herein, a novel hyperbranched polymer (HBPDT-DI) composed of diphenylsilane and isocyanurate main chains along with phosphaphenanthrene and carboxyl double terminal groups was designed and fabricated for application in fire-resistant epoxy thermosetting materials. The obtained thermosets containing 9 wt% HBPDT-DI exhibited admirable flame retardancy with a limiting oxygen index of 32.5 % and UL-94 rating of V-0 coupled with improved fire hazard with reduced peak heat release rate of 36.1 % and total smoke production of 21.8 %. Such enhanced characteristics were mainly ascribed to the synergistic flame retarding impacts of phosphorus, silicon, and nitrogen-containing segments present in HBPDT-DI. Notably, the incorporation of 9 wt% HBPDT-DI significantly improved the tensile strength, flexural strength, and impact strength of the modified thermosets by 74.2 %, 70.9 %, and 115.1 %, respectively, without compromising the good glass transition temperature (<em>T</em>_g) and thermal stability of the modified epoxy thermosets. Overall, valuable insights into concurrently enhancing the flame retardancy and toughness of epoxy thermosets were provided, promising for future design and fabrication of advanced flame-retardant epoxy thermosets.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142316098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The anticorrosion behavior and mechanism of Ti3C2 nanosheets for titania pigmented epoxy coatings","authors":"","doi":"10.1016/j.porgcoat.2024.108822","DOIUrl":"10.1016/j.porgcoat.2024.108822","url":null,"abstract":"<div><div>Utilization of Ti₃C₂ nanosheets for enhancing anticorrosion of epoxy resin coatings has been reported. But the epoxy coatings in real world are mainly pigmented coatings. Unfortunately, the anticorrosion behavior of Ti₃C₂ nanosheets for the pigmented epoxy coatings is rarely concerned. In this work, both 0.5 wt% unmodified Ti₃C₂ nanosheets (U-Ti₃C₂) or 0.5 wt% (3-glycidyloxypropyl)trimethoxysilane-modified Ti₃C₂ nanosheets (G-Ti₃C₂) were introduced into solvent-based titania pigmented epoxy coatings. Corrosion resistance of coatings was evaluated by electrochemical impedance spectroscopy and salt spray tests. A titania concentration effect was interestingly exhibited for the anticorrosion behavior Ti₃C₂-containing pigmented coatings. Enhanced anticorrosion was only demonstrated when TiO₂ content was not above 10 wt% for U-Ti₃C₂ or 5 wt% for G-Ti₃C₂. Moreover, the pigmented coatings with U-Ti₃C₂ have better corrosion resistance than those with G-Ti₃C₂, being contrary to the phenomenon observed in pure epoxy resin coatings. The different anticorrosion behavior of Ti₃C₂ nanosheets for epoxy coatings with various TiO₂ contents was mainly attributed to the different dispersion states of TiO₂ pigments, that is, improved dispersion at low TiO₂ content and deteriorated dispersion at high TiO₂ content, after addition of Ti₃C₂ nanosheets.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142316101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}