Progress in Organic Coatings最新文献

{"title":"Corrosion protection of epoxy-clay nanocomposite coatings on metallic substrates in saline environments containing alkaline copper quaternary ammonium wood preservatives","authors":"Yun-Xiang Lan ,&nbsp;Chian-Huei Yang ,&nbsp;I-Hsuan Hsiao ,&nbsp;Chien-Wei Yeh ,&nbsp;Naveen Bunekar ,&nbsp;Jui-Ming Yeh ,&nbsp;Karen S. Santiago ,&nbsp;Cheng-Yu Tsai ,&nbsp;Chun-Hung Huang","doi":"10.1016/j.porgcoat.2025.109076","DOIUrl":"10.1016/j.porgcoat.2025.109076","url":null,"abstract":"<div><div>In this study, the epoxy-clay nanocomposites (ECNs) containing 0.5, 1.0, and 2.0 wt-% of organophilic modified clay (OMC) with CTAB as intercalating agent were prepared and applied in anticorrosion for metallic substrates in the forms of cold-rolled steel (CRS) electrode/steel panel/screw in saline condition containing 2 wt-% of alkaline copper quaternary (ACQ) ammonium.</div><div>The corrosion resistance of CRS coated with ECN was evaluated under saline conditions, both in the presence and absence of ACQ, through a series of electrochemical corrosion tests. <em>E</em>_{<em>corr</em>} of CRS-decorated with neat epoxy coating shifted from −611 to −624 mV in saline solution by introducing 2 wt-% of ACQ, implying that Cu²⁺ existing in saline solution with ACQ may speed up oxidation rate of iron. Moreover, <em>E</em>_{<em>corr</em>} of CRS electrode coated with ECN-0.5 containing 0.5 wt-% of OMC platelets shifted from −624 mV to −595 mV, indicating that clay platelets existing in ECN coating may effectively increase the diffusion pathway of Cu²⁺/oxygen gas as supported by the concentration of Cu²⁺ in ACQ determined by ICP-MS after electrochemical measurements and barrier property of oxygen gas was evaluated using a gas permeability analysis (GPA) technique, therefore slow down the oxidation rate of iron. Moreover, increasing the clay loading in ECN, the ECN-1 and ECN-2 exhibited the <em>E</em>_{<em>corr</em>} = −571 and − 552 mV, respectively, indicating that the higher loading of dispersing OMC in epoxy matrix may provide a much longer pathway length of Cu²⁺ and O₂ gas. Accelerated salt-spray corrosion of steel panel and screw in aggressive medium were also evaluated according to ASTM B-117. The results obtained from the salt-spray tests aligned well with those from the electrochemical evaluations. Adhesion and wear resistance of ECN coatings were also investigated by ASTM 3359 and ASTM D 4060, respectively.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"200 ","pages":"Article 109076"},"PeriodicalIF":6.5,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163882","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":"UV-catalytic fillers with hydrophilic groups encapsulating hydrophobic groups enhance the corrosion resistance of epoxy coatings in harsh environments","authors":"Chijia Wang ,&nbsp;Shun Zhang ,&nbsp;Siqiao Feng ,&nbsp;Shuyi Liu ,&nbsp;Haonan Liu ,&nbsp;Qianqian Yin ,&nbsp;Zihua Wang ,&nbsp;Zhanjian Liu ,&nbsp;Huaiyuan Wang","doi":"10.1016/j.porgcoat.2025.109066","DOIUrl":"10.1016/j.porgcoat.2025.109066","url":null,"abstract":"<div><div>In recent years, the impact of filler surface groups on the protective qualities of epoxy resin coatings has garnered significant attention. This study has centered on the hydrophobic modification of mica fillers using fluorosilane (PFDTMS). Subsequently, the photocatalytic properties of titanium black (B-TiO₂) and Cobalt tetroxide (Co₃O₄) were utilized to deposit hydroxyl radicals onto the fluorosilane surface, resulting in a configuration where hydrophilic groups encapsulate hydrophobic groups on the exterior of the filler. Furthermore, the study aimed to evaluate the anti-corrosion and wear resistance of these composite coatings under high-pressure CO₂ conditions. After undergoing a 72-hour high-pressure CO₂ corrosion test, the EP/UV-F/B-TiO₂/Mica/Co₃O₄ composite coating retained a substantial impedance modulus value of 3.648 × 10⁹ Ω/cm² at 0.01 Hz, whereas the pure epoxy resin coating exhibited detachment and cracking from the substrate. These observations indicate that the epoxy composite coating, featuring its distinctive hydrophilic-hydrophobic configuration, possesses exceptional long-term corrosion resistance. In conclusion, this research presents encouraging prospects for the development of mica-based, resilient anti-corrosive fillers.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"200 ","pages":"Article 109066"},"PeriodicalIF":6.5,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163880","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":"From solution to surfaces: Engineering a water-soluble 1, 2-benzisothiazolin-3-one (BIT)-based antimicrobial conjugate for an antibacterial and antifouling brush-like coating","authors":"Yihan Sun ,&nbsp;Haibin Zhao ,&nbsp;Yuanyuan Shen ,&nbsp;Peng Wang","doi":"10.1016/j.porgcoat.2025.109077","DOIUrl":"10.1016/j.porgcoat.2025.109077","url":null,"abstract":"<div><div>1, 2-benzisothiazolin-3-one (BIT) is a potent and broad-spectrum biocide, however, the limited water solubility severely restricted its antimicrobial efficacy and bioavailability. In this study, we developed a molecular splicing strategy via integrating two bioactive compounds BIT and poly [2-(dimethylamino) ethyl methacrylate] (PDMAEMA), thus yielding a BIT-PDMAEMA conjugate with distinctly improved water solubility and potent in vitro antibacterial activity. The conjugates do not require to further post-synthesis modification, showing intrinsic antimicrobial property, bactericidal activity, low drug resistance frequency, and biofilm inhibition and eradication effects. Mechanistic investigation demonstrated that the conjugates possess great cell membrane- and cellular-thiol-groups-targeting capability, thus disrupting cell membranes and cellular proteins, leading to significant oxidative stress damage and intracellular content leakage, eventually causing bacteria lysis. After bacterial activity screening, the optimal conjugate armed with antifouling and anchoring blocks was grafted onto arbitrary materials as a non-leaching bioactive compound against bacteria and prohibiting bacteria adhesion. We further used a two-chamber assay to valid the non-leaching feature and mechanistic mode of action of the brush-like surface coating. As a proof of concept, the contact-active coating shows a great potential for inactivating microorganisms in environmental water samples from untreated underground and surface water. The present work highlights the potential of the structural modification of BIT derivatives with the combination of activity enhancing modalities.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"200 ","pages":"Article 109077"},"PeriodicalIF":6.5,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163520","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":"Sustainably sourced covalent adaptable networks derived from eugenol for flame retardant, transparent and self-healing coating applications","authors":"Yu Li ,&nbsp;Hao-Xin Niu ,&nbsp;Ze-Tao Xiao ,&nbsp;Tian-Mo Yang ,&nbsp;Hao-Ran Jiang ,&nbsp;Wei Wang ,&nbsp;Yuan Hu ,&nbsp;Xin Wang","doi":"10.1016/j.porgcoat.2025.109072","DOIUrl":"10.1016/j.porgcoat.2025.109072","url":null,"abstract":"<div><div>High-transparent polycarbonate (PC) is often used to replace glass in construction, but its poor flame retardancy limits its use. In recent years, materials for covalent adaptive networks (CANs) have gained much attention. The preparation of CANs and their application to flame retardant coatings is an innovative approach. In this work, a dithiol-containing borate ester (B2SH) and P-containing eugenol monomer (TEP) were synthesized. The flame retardant self-healing eugenol bio-based covalent adaptive network (TEP-SH) was prepared by copolymerizing TEP with B2SH and polythiol monomers (such as pentaerythritol tetra(3-mercaptopropionate) (4SH)) via photo-induced thiol-ene polymerization. Among these samples, TEP/B2SH/13%4SH has the best comprehensive performance, while superior flame retardancy, self-healing and shape memory properties and high transparency are preserved. TEP/B2SH/13%4SH was coated on a PC board for the cone calorimeter test. Compared with those of PC, PHRR and THR decreased by 31.3% and 24.5%, respectively, and the char yield (CY) increased from 3.5% to 16.6%. Moreover, TEP/B2SH/13%4SH exhibited excellent adhesion to PC with a high shear strength (2.77 MPa). Therefore, TEP/B2SH/13%4SH has excellent performance and can be used as a flame-retardant, transparent and self-healing coating, thus ensuring the safe application of PC in building materials.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"200 ","pages":"Article 109072"},"PeriodicalIF":6.5,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163581","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":"Controlled microphase separation in polyurethane acrylate-based optically clear pressure sensitive adhesives","authors":"Xinrong Huang,&nbsp;Gang Wang,&nbsp;Yi Zhang,&nbsp;Zhengxiang Zhou,&nbsp;Yingfeng Yu","doi":"10.1016/j.porgcoat.2025.109064","DOIUrl":"10.1016/j.porgcoat.2025.109064","url":null,"abstract":"<div><div>Constructing fit-for-purpose overall properties in optically clear pressure sensitive adhesives (OCAs) is a prerequisite for achieving high-quality displays and remains challenging. Herein, we report a series of OCAs based on UV-curable polyurethane acrylate (PUA) copolymers with varied diisocyanates and average acrylate functionalities in the PUA prepolymer to unveil the impact of microphase structure on the overall properties of OCAs. Both simulation and experimental results suggest that OCAs based on diisocyanates with higher symmetry and rigidity show stronger hard-phase interaction, which further enhances adhesion. While OCAs based on alicyclic diisocyanates exhibit better optical properties than those based on aromatic diisocyanates, which can attribute to the lower refractive index of alicyclic hard phase. An increase of average acrylate functionality reduces the hard segment stacking near the crosslinking point and promoting phase mixing, which is confirmed by SAXS and FTIR experiments. However, the haze value of the related OCA is abnormally increased. It is tentatively inferred that chemical crosslinking has an opposite effect: it decreases the degree of microphase separation (which decreases haze value) yet amplifies scattering resulting from refractive index mismatch of the microphase (which increases haze value). This work provides design insights for balancing the overall performance of OCAs and further enabling high-quality displays.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"200 ","pages":"Article 109064"},"PeriodicalIF":6.5,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163695","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":"Improvement of fire protection properties of epoxy coatings with cobalt-zinc based metal-organic frameworks and siloxane co-loaded alginate fibers as nano-reinforcing agents","authors":"Chunlin Chen ,&nbsp;Xinyu Bai ,&nbsp;Guoqing Xiao ,&nbsp;Fei Zhong ,&nbsp;Ruili Li ,&nbsp;Hao Li ,&nbsp;Chunyan Chen ,&nbsp;Chuanlin Mou ,&nbsp;Bin Wang","doi":"10.1016/j.porgcoat.2025.109074","DOIUrl":"10.1016/j.porgcoat.2025.109074","url":null,"abstract":"<div><div>Alginate fibers (ORF), as an organic fiber, have the natural advantage of good compatibility with epoxy resins. However, it is unable to adequately serve as a reinforcing residual char at high temperature due to its greater tendency to form amorphous char. To address this shortcoming, Co, Zn-MOF was uniformly immobilized on the surface of ORF, which accelerated the transformation of resin matrices to stabilized carbonaceous materials. Simultaneously, the Co, Zn-MOF could induce the conversion of the ORF into residual carbon and retain its fiber structure, thus serving the purpose of reinforcing the residual carbon. After that, the organosilicon was loaded on the surface of ORF/Co,Zn-MOF to obtain ORF/Co,Zn-MOF@Si composite flame retardant, which could form a stable silicon network at high temperature, thus effectively slowing down the heat transfer process. The experimental results proved that the ORF@Co,Zn-MOF@Si filled EP exhibited maximum tensile strength (12.2 ± 0.51 Mpa) and impact strength (18.3 ± 0.56 KJ/m²). Further, the ORF@Co,Zn-MOF@Si/EP composite coating had a significantly lower backside temperature (166.4 °C) than other coatings, signaling optimum thermal insulation efficiency. It is worth mentioning that the ORF@Co,Zn-MOF@Si/EP samples achieved a significant residual carbon retention rate (31.9 %) in the heat loss assessment session, which is attributed to the catalytic effect of Co and Zn ions on carbon generation within the Co,Zn-MOF framework. The expansion height and expansion rate of the ORF@Co,Zn-MOF@Si/EP sample were 19.60 mm and 15.2, highlighting a significant enhancement in foaming behavior. Besides, some fibrous structures can be clearly observed in the carbon layer of ORF@Co,Zn-MOF@Si/EP, which can be explained by the catalytic carbon-forming effect of Co,Zn-MOF and the protective effect of silicon network.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"200 ","pages":"Article 109074"},"PeriodicalIF":6.5,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163578","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":"pH-drive responsive and controlled release system of smart nanocontainers for corrosion protection of epoxy resin","authors":"Yajun Deng ,&nbsp;Changan Zhang ,&nbsp;Shibin Wang ,&nbsp;Hui Li ,&nbsp;Chuanying Wei ,&nbsp;Daqing Fang ,&nbsp;Zhangji Ye ,&nbsp;Jianhua Wu","doi":"10.1016/j.porgcoat.2025.109068","DOIUrl":"10.1016/j.porgcoat.2025.109068","url":null,"abstract":"<div><div>In this work, two distinct nano-fillers (HBP), designated as HBP₁ and HBP₂, were synthesized through the chemical grafting poly(ethyleneimine) (PEI) with two varying molecular weights onto the halloysite nanotubes (HNTs) surface, thereby imparting pH-responsive switching capabilities to the smart films. Subsequently, these different fillers were loaded with benzotriazole (BTA) utilizing a vacuum impregnation technique. Besides, GP-HBP₁ and GP-HBP₂ nano-fillers were prepared by <em>co</em>-doping polypyrrole (PPy) and HBP onto the graphene oxide (GO) surface. The structural configurations of the four fillers were meticulously characterized, and the pH-responsive behaviors of HBP₁ and HBP₂ were comprehensively investigated. Specifically, the corrosion inhibition efficacy of each filler, as well as the corrosion resistance of the composite epoxy resin, were rigorously evaluated to determine their ultimate anticorrosion performance. The GP-HBP₂-incorporated composite coating exhibited superior barrier properties, and its exceptional anticorrosion performance could be attributed to the loading content and release mechanism of BTA within the nanotubes and on the graphene surface. Additionally, this layer remained chemically inert, thereby mitigating galvanic corrosion. Consequently, our research may open new avenues for developing advanced materials that offer long-term corrosion protection.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"200 ","pages":"Article 109068"},"PeriodicalIF":6.5,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163694","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":"Self-doped alcohol-soluble small molecules as cathode interface layers for organic solar cells","authors":"Yifeng Lei ,&nbsp;Tingting Shang ,&nbsp;Yefeng Qiu ,&nbsp;Yanfei Shi ,&nbsp;Shaopeng Fu ,&nbsp;Mingzhe Li ,&nbsp;Siqian Qu ,&nbsp;Chengxiao Huang ,&nbsp;Jianfeng Li","doi":"10.1016/j.porgcoat.2025.109060","DOIUrl":"10.1016/j.porgcoat.2025.109060","url":null,"abstract":"<div><div>Studying interfacial engineering is crucial to developing organic solar cells (OSCs). Herein, we report a novel, alcohol-soluble, self-doped small molecule, 3,3′-(indolo[3,2-<em>b</em>]indole-5,10-diyl)bis(<em>N</em>,<em>N</em>-dimethylpropan-1-amine) (IDID1), which features a backbone composed of two linked indole units and two nitrogen-containing carbon chains as side chains. The nitrogen-containing side chains impart a polarity, making it soluble in polar solvents such as methanol, thereby enhancing its environmental compatibility. Notably, IDID1 forms an interfacial dipole layer, which effectively reduces the work function (WF) of the Al electrode. Furthermore, an n-type self-doping effect is observed in IDID1, which is attributed to the transfer of the lone pair of electrons present on the nitrogen atoms to the central conjugated unit. The self-doping effect has been empirically demonstrated to significantly enhance the electron collection efficiency and transport capacity, thereby ultimately resulting in an increased electron mobility. In the present study, orthotropic devices were fabricated utilizing IDID1 as the cathode interfacial layers (CILs). The optimal performance of the devices was achieved at a IDID1 concentration of 0.6 mg·mL⁻¹, with a power conversion efficiency (PCE) of 8.88 %. This represents a 175 % improvement in performance compared to devices without CILs.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"200 ","pages":"Article 109060"},"PeriodicalIF":6.5,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163693","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":"Assessment of anticorrosion performance of epoxy coatings through controlling graphitic carbon nitride nanosheet bandgap and morphology","authors":"Roozbeh Azinfar ,&nbsp;Abdollah Omrani ,&nbsp;Shahram Ghasemi","doi":"10.1016/j.porgcoat.2025.109059","DOIUrl":"10.1016/j.porgcoat.2025.109059","url":null,"abstract":"<div><div>Graphitic carbon nitride (GCN) nanosheets have the potential to serve as effective fillers for epoxy (EP) matrices, enhancing the barrier properties against the penetration of corrosive ions. This study investigates the impact of various GCNs including bulk GCN obtained through thermal treatment of urea, large-sized nanosheets (LG) synthesized via ultrasound treatment, medium-sized nanosheets (MG) fabricated by NH₄OH and ultrasound treatments, and GCN quantum dots (QDs) formed through acid treatment followed by NH₄OH and ultrasound treatments on A36 steel substrates. Among these, EP modified with QD demonstrates proper anticorrosion performance in 3.5 % NaCl solution, maintaining stability from the initial application to 672 h of immersion. The corrosion current density of the QD sample decreased by two orders of magnitude compared to the bulk sample, and after 672 h of immersion, it showed excellent stability with only a slight increase. Corrosion resistance was assessed in both light (L) and dark (D) environments with the QD sample displaying the best corrosion resistance according to the extent of reduction in corrosion current density: (GCN (L) i_corr = 1.42 × 10⁻⁵ A/cm², QD (L) i_corr = 2.03 × 10⁻⁷ A/cm²; GCN (D) i_corr = 8.66 × 10⁻⁶ A/cm², QD (D) i_corr = 2.03 × 10⁻⁷ A/cm²). This might be attributed to an increase to the number of NH₂ terminal groups and the oxygen defects due to the acid treatment of bulk g-C₃N₄. Moreover, the wide bandgap of the GCN in the form of QD further boosts the coating's corrosion resistance in the presence of light.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"200 ","pages":"Article 109059"},"PeriodicalIF":6.5,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163577","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":"Predictive approach to assessing the lifetimes of heavy-duty coating systems for steel bridges","authors":"Victor Marvin Luna ,&nbsp;Si-Yun Song ,&nbsp;Young-Soo Jeong ,&nbsp;Sang-Hyung Lee ,&nbsp;In-Tae Kim","doi":"10.1016/j.porgcoat.2025.109061","DOIUrl":"10.1016/j.porgcoat.2025.109061","url":null,"abstract":"<div><div>This paper proposes an estimation method for the lifetime of coating systems for bridges in corrosive environments described by the ISO 9223 categories. Accelerated corrosion tests were conducted to simulate ISO 11997-1 Cycle D by subjecting the specimens to cycles of salt mist exposure, condensation, and evaporation. Circular defects with diameters of 1, 3, and 5 mm were introduced to the coatings as initial deterioration to match the ASTM D610 rust patterns for 0.03 %, 0.1 %, 0.3 %, 1 %, and 3 % coverage as rusted areas of the coating. The collected data suggest a logistic growth curve model for the deterioration rate. Durability curves (R² &gt; 0.98) were developed to estimate the lifetimes of the coatings in ISO 9223 corrosive environments. Thus, this study presents a method for predicting the remaining life until repainting is required for deteriorated sections of the coatings. These models improve maintenance planning and aid in prolonging the effective service lives of coated steel bridges.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"200 ","pages":"Article 109061"},"PeriodicalIF":6.5,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143163692","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}