Progress in Organic Coatings最新文献_第6页

Dynamic responsive liquid-like smooth coatings developed via multi-mechanism synergistic strategy for intelligent antibiofouling 基于多机制协同策略开发的动态响应类液体光滑涂层

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-01-13 DOI: 10.1016/j.porgcoat.2026.109950

Feiyan Zhang , Junkai Gao , Ziru Zhao , Mengsheng Xia , Xintong Li , Lu Cao , Yan Chen

Marine antifouling coatings are critical for protecting ships and offshore industrial equipment from biofouling and corrosion. However, conventional coatings often fail to balance antifouling and anti-corrosion performance with mechanical stability. In this paper, a pH-responsive antibiofouling composite coating (OC-MCSX) with slippery liquid-like properties and long-term functionality was developed. The coating was fabricated by covalently grafting PDMS brushes into an epoxy matrix via thermal crosslinking, while incorporating microencapsulated 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one (DCOIT) as a functional filler. The highly crosslinked network significantly enhanced the OC-MCSX's mechanical strength, whereas the pH-responsive microcapsules enabled precise controlled release of antifoulants. Furthermore, this design integrates a low-surface-energy fouling-release mechanism with a contact-inhibition antifouling strategy. Through the synergistic effects of surface interface regulation and controlled-release antifouling agents, it effectively suppresses the adhesion and accumulation of biofouling, thereby achieving stable and long-lasting antifouling performance. The experimental results showed that the composite coating with 3 wt% microcapsule loading (OC-MCS3) exhibited remarkable antibacterial efficacy, the antibacterial rates against E. coli and S. aureus are 98.25 % and 99.56 % respectively, inhibition rates of 88.22 % against chlorella and 93.13 % against diatoms, and a pseudo-barnacle removal strength of only 0.053 MPa. In addition, the coating exhibited excellent resistance to a wide range of solid and liquid contaminants, along with superior self-cleaning ability. After 60 days of marine immersion testing, the OC-MCS3 coating showed no significant biofouling coverage compared with control samples, confirming its excellent anti-fouling stability. This research proposes a prospective tactic for developing environmentally friendly and durable anti-fouling coatings for ships.

船舶防污涂料对于保护船舶和海上工业设备免受生物污染和腐蚀至关重要。然而，传统涂料往往不能平衡防污和防腐性能与机械稳定性。本文研制了一种ph响应型抗菌剂复合涂层（OC-MCSX），该涂层具有光滑的类液体特性和长效功能。该涂层通过热交联将PDMS电刷共价接枝到环氧树脂基体上，并加入微胶囊化4,5-二氯-2-n-辛基-4-异噻唑啉-3- 1 （DCOIT）作为功能填料。高度交联的网络显著提高了OC-MCSX的机械强度，而ph响应微胶囊能够精确控制防垢剂的释放。此外，该设计集成了低表面能污垢释放机制和接触抑制防污策略。通过表面界面调节和控释防污剂的协同作用，有效抑制生物污垢的粘附和积累，从而达到稳定持久的防污性能。实验结果表明，微胶囊负载量为3 wt%的复合涂层（OC-MCS3）具有显著的抗菌效果，对大肠杆菌和金黄色葡萄球菌的抑菌率分别为98.25%和99.56%，对小球藻和硅藻的抑菌率分别为88.22%和93.13%，对伪附体的去除强度仅为0.053 MPa。此外，该涂层对各种固体和液体污染物具有优异的抵抗能力，并具有优异的自清洁能力。经过60天的海水浸泡测试，与对照样品相比，OC-MCS3涂层没有明显的生物污垢覆盖，证实了其出色的防污稳定性。本研究为开发环境友好、耐用的船舶防污涂料提供了一种前瞻性策略。

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引用次数: 0

Biomimetic design of eco-friendly capsaicin-inspired bifunctional polymer coatings with antibacterial and antifouling capabilities 仿生设计的环保辣椒素启发双功能聚合物涂层具有抗菌和防污能力

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-01-13 DOI: 10.1016/j.porgcoat.2026.109954

Inhui Bae, Yeonsu Cho, Hyo Kang

A hydrophobic polymer coating with antibacterial and antifouling properties was developed by employing a biomimetic strategy using N-vanillylnonanamide, a capsaicin analog derived from chili pepper. Poly(4-chloromethylstyrene) was first synthesized by free-radical polymerization and was subsequently functionalized via nucleophilic substitution with N-vanillylnonanamide (PEP) to covalently introduce capsaicin-based side chains. A series of polymers (PPEP#, # = 20, 40, 60, 80, and 100) was obtained, and their structural, thermal, and mechanical properties were studied. The thin films were fabricated on glass and cellulose substrates by spin- and dip-coating exhibited high optical transparency. As an environmentally friendly alternative to toxic fluorinated compounds, these coatings incorporate bio-inspired molecular structures with functional surface properties. Surface energy measurements and angle-resolved X-ray photoelectron spectroscopy confirmed a progressive increase in surface hydrophobicity with increasing PEP content. The coatings also sealed the porous structure of the cellulose, significantly reducing its water permeability, while maintaining sufficient mechanical integrity and adhesion to the substrate. Antibacterial adhesion tests demonstrated that PPEP100 inhibited Escherichia coli attachment by 100% and Staphylococcus aureus attachment by 92.3%. Long-term adhesion tests under biofilm-promoting conditions further showed that PPEP100 maintained antibacterial adhesion resistance over 7 days. Antifouling assessments using dyes and household contaminants indicated improved performance with increasing PEP substitution, attributed to reduced surface energy and suppressed adsorption. Furthermore, PPEP100 exhibited excellent structural stability under various extreme conditions. These findings highlight PPEP# as a promising eco-friendly coating, which incorporates hydrophobicity with durable antibacterial and antifouling properties without relying on fluorinated materials.

采用从辣椒中提取的辣椒素类似物n -香兰素壬胺的仿生策略，制备了一种具有抗菌和防污性能的疏水聚合物涂层。聚（4-氯甲基苯乙烯）首先通过自由基聚合合成，然后通过n-香草壬胺（PEP）亲核取代引入共价辣椒素侧链进行功能化。得到了一系列聚合物（PPEP#、# = 20、40、60、80和100），并对其结构、热性能和力学性能进行了研究。采用自旋镀膜和浸渍镀膜的方法在玻璃和纤维素基底上制备了具有高光学透明度的薄膜。作为有毒氟化化合物的环保替代品，这些涂料结合了具有功能性表面特性的生物启发分子结构。表面能测量和角度分辨x射线光电子能谱证实，随着PEP含量的增加，表面疏水性逐渐增加。涂层还密封了纤维素的多孔结构，显著降低了其透水性，同时保持了足够的机械完整性和对基材的附着力。抗菌粘附试验表明，PPEP100对大肠杆菌的粘附抑制率为100%，对金黄色葡萄球菌的粘附抑制率为92.3%。在生物膜促进条件下的长期粘附试验进一步表明，PPEP100在7 d内保持抗菌粘附抗性。使用染料和家庭污染物进行的防污评估表明，随着PEP取代量的增加，由于表面能的降低和吸附的抑制，性能得到了改善。此外，PPEP100在各种极端条件下都表现出优异的结构稳定性。这些发现突出了PPEP#作为一种很有前途的环保涂料，它结合了疏水性、持久的抗菌和防污性能，而不依赖于氟化材料。

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引用次数: 0

Lithium composite grease reinforced polyurea composite coating toward anti-friction and impact wear resistance 锂复合润滑脂增强聚脲复合涂层向着抗摩擦、抗冲击耐磨方向发展

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-01-12 DOI: 10.1016/j.porgcoat.2026.109959

Mengying Zhao , Xiaoqiang Fan , Zhongpan Zhang , Huixian Yang , Zhizhan Dong , Xiaoguang Sun , Minhao Zhu

Introducing self-lubricating microdrops into a resin matrix is an effective strategy for developing advanced materials that combine efficient lubrication with durable impact wear resistance. In this paper, we prepared self-lubricating composite coatings (PU/LCG) by dispersing lithium composite grease (LCG) microdrops into a polyurea (PU) resin matrix. X-ray micro-computed tomography (micro-CT) revealed a three-dimensional network of PU-encapsulated LCG microdrops, which significantly enhanced lubrication efficiency and reduced oil depletion. The PU/LCG-10% coating showed dramatically improved tribological performance, with a 90.6% lower coefficient of friction and a 79.8% lower wear rate than the pure PU coating. Homogeneously dispersed, optimally sized LCG microdrops enable responsive oil release, forming a lubricating film at the friction interface. The PU/LCG-10% coating also exhibited high toughness (8.11 MJ/m³) and a minimal impact wear track diameter (1.09 mm), indicating effective resistance to operational impact wear. Impact wear resistance arises from energy absorption and stress dispersion during oil release, mitigating plastic deformation. This synergistic design makes PU/LCG coatings promising for various self-lubricating mechanical systems.

在树脂基体中引入自润滑微滴是开发先进材料的有效策略，该材料结合了有效的润滑和持久的抗冲击磨损性。本文将锂复合润滑脂（LCG）微滴分散到聚脲（PU）树脂基体中，制备了自润滑复合涂层（PU/LCG）。x射线微计算机断层扫描（micro-CT）显示了pu包封LCG微滴的三维网络，显著提高了润滑效率，减少了油的损耗。与纯PU涂层相比，PU/LCG-10%涂层的摩擦系数降低了90.6%，磨损率降低了79.8%。均匀分散、最佳尺寸的LCG微滴能够快速释放油，在摩擦界面形成润滑膜。PU/LCG-10%涂层还表现出高韧性（8.11 MJ/m3）和最小冲击磨损径（1.09 mm），表明其具有有效的抗操作冲击磨损能力。冲击耐磨性源于释放油过程中的能量吸收和应力分散，减轻了塑性变形。这种协同设计使PU/LCG涂层适用于各种自润滑机械系统。

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引用次数: 0

A review of the use of natural pigments in multilayer and composite films for intelligent biodegradable food packaging 天然色素在生物可降解食品智能包装多层膜和复合膜中的应用综述

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-01-12 DOI: 10.1016/j.porgcoat.2026.109955

Meral Yildirim-Yalcin , Tansel Kemerli-Kalbaran , Tugce Ceyhan , Esin Mojtahedi , Hatice Sena Olcay , Selin Sahin , Seid Reza Falsafi , Omer Said Toker

Composite and multilayered forms of biodegradable packaging are manufactured in order to improve the qualities of the films. This kind of packaging has gained attention as a consequence of the problem of plastic waste. Natural pigments alter the color of packaging films as a result of pH changes due to components released during food deterioration, thus providing information about the food's status and functioning as intelligent packaging. This review covers the recent studies on the use of natural pigments for the production of biodegradable composite and multilayer intelligent packaging. In addition, a coating-design perspective is adopted to examine how layer structure, pigment incorporation, and polymer–pigment interactions shape the functional performance of multilayer and composite films. The review emphasizes structure property relationships central to coating science by summarizing key characterization techniques including mechanical, barrier, optical, and thermal analyses and explaining how natural pigment incorporation modifies the performance of multilayer and composite films. The possibilities of using biodegradable films containing natural pigments as spoilage indicators in food packaging are also summarized. The selection of appropriate biopolymers and pigments is important for the production of a high-quality film that can act as an indicator at the desired pH. Overall, this review integrates advancements in intelligent biodegradable packaging with principles of organic coating technology, outlines current challenges associated with pigment stability and coating durability, and highlights future research directions for developing scalable, high-performance functional coatings.

复合和多层形式的可生物降解包装是为了提高薄膜的质量而制造的。由于塑料垃圾问题，这种包装引起了人们的注意。由于食品变质过程中释放的成分导致pH值变化，天然色素会改变包装薄膜的颜色，从而提供有关食品状态的信息，并发挥智能包装的作用。本文综述了近年来利用天然色素制备生物降解复合材料和多层智能包装的研究进展。此外，从涂层设计的角度考察了层结构、颜料掺入和聚合物-颜料相互作用如何影响多层和复合薄膜的功能性能。本文通过总结关键表征技术，包括机械、屏障、光学和热分析，强调了涂层科学的核心结构和性能关系，并解释了天然色素的加入如何改变多层和复合薄膜的性能。最后总结了利用含天然色素的可生物降解薄膜作为食品包装变质指标的可能性。选择合适的生物聚合物和色素对于生产高质量的薄膜非常重要，这些薄膜可以作为理想ph值的指示物。总体而言，本文将智能可生物降解包装的进展与有机涂层技术的原理结合起来，概述了目前与颜料稳定性和涂层耐久性相关的挑战，并强调了未来开发可扩展的高性能功能涂层的研究方向。

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引用次数: 0

A two-step method to construct a superhydrophobic, ceramicizable intumescent fire-retardant coating suitable for steel and RPU 一种两步法制备超疏水陶瓷膨胀防火涂料的方法

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-01-12 DOI: 10.1016/j.porgcoat.2026.109951

Dongdong Tang , Huizhi Huang , Yao Ren , Qiuru Bao , Dawei Luo , Kai Zhang , Yuan Liu

As the demand for flame-retardant materials grows, intumescent fire-retardant coatings (IFC) have attracted significant attention due to advantages such as ease of application, minimal impact on substrate properties, and high flame-retardant efficiency. However, conventional IFC exhibit limitations including low char strength and hygroscopic components. To address these issues, this study introduced low-melting-point glass powder (LMGP) as a ceramic-forming filler into IFCs, preparing a ceramicizable IFC (C-IFC) with higher char layer strength. Furthermore, TiO₂ was surface-modified with 1H,1H,2H,2H-perfluorodecyltriethoxysilane (PFDTS) to produce superhydrophobic PFDTS@TiO₂ powder. By combining the aforementioned coating and modified powder through a two-step process, a superhydrophobic ceramicizable IFC (C₂₀-IFC/ PFDTS@TiO₂) was successfully developed. This coating demonstrated excellent fire-retardant and thermal insulation performance on steel structures and rigid polyurethane foam (RPU).Additionally, the coating surface exhibited exceptional hydrophobicity, with a water contact angle (WCA) of 157.5 ± 0.7° and a water roll-off angle(WRA) of 4 ± 0.3°. This hydrophobic surface gives the coating excellent water resistance. This work provides a universal and efficient solution for developing high-performance, durable fire-retardant protective coatings integrating ‘fire and water non-invasion’ and self-cleaning capabilities.

随着阻燃材料需求的增长，膨胀型阻燃涂料（IFC）因其易于应用、对基材性能影响最小、阻燃效率高等优点而备受关注。然而，传统的IFC具有局限性，包括低炭强度和吸湿成分。为了解决这些问题，本研究将低熔点玻璃粉（LMGP）作为陶瓷成型填料引入到IFC中，制备了具有更高炭层强度的可陶瓷IFC （C-IFC）。然后用1H，1H,2H，2H-全氟癸基三乙氧基硅烷（PFDTS）对TiO2进行表面改性，制备超疏水PFDTS@TiO2粉体。通过两步法将上述涂层与改性粉末相结合，成功开发出超疏水可陶化IFC （C20-IFC/ PFDTS@TiO2）。该涂料对钢结构和硬质聚氨酯泡沫（RPU）具有优异的阻燃和隔热性能。此外，涂层表面表现出优异的疏水性，水接触角（WCA）为157.5±0.7°，水滚转角（WRA）为4±0.3°。这种疏水表面使涂层具有优异的耐水性。这项工作为开发高性能、耐用的防火防护涂料提供了一种通用和有效的解决方案，该涂料集“防火、防水”和自清洁能力于一体。

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引用次数: 0

Sustainable mineral–organic composites with controlled water responsiveness and mechanical integrity for seed pelleting 可持续矿物-有机复合材料与控制水响应性和机械完整性的种子颗粒

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-01-12 DOI: 10.1016/j.porgcoat.2025.109934

Shan Liu , Bilquees Bozdar , Yushi Wu , Changjing Luo , Chenglou Yang , Xingzhao Hu , Xiangchun Li , Chunjie Zhou , Kegin Peng , Jiang long Wang , Zhen Hua Li

The development of bio-based composite coatings that balance mechanical integrity with water responsiveness remains a key challenge in sustainable material design. In this study, mineral–organic hybrid coatings were formulated using talc (lamellar inorganic filler) and eucalyptus wood powder (lignocellulosic fibrous filler) to investigate how the filler composition governs powder flowability, coating cohesion, and moisture-mediated functionality in Brassica napus L. seed pelleting. Distinct particle size distributions and hygroscopic properties of the fillers generated tunable densities and porosities across the talc–eucalyptus ratios. Increasing the organic fraction enhanced flowability and reduced apparent density. This shift was accompanied by a higher equilibrium moisture content and solubility, indicating increased hydrophilicity and improved moisture buffering. Mechanical testing showed that pure talc coatings were brittle and rapidly disintegrated, whereas mixtures containing 40–60 % eucalyptus achieved optimal compressive strength (4–5 N), high cracking resistance (>1200 s), and negligible crushing. Germination assays revealed that these intermediate formulations maintained high germination (88 %) and vigor, outperforming both mineral- and organic-dominated coatings. Cluster analysis confirmed that intermediate compositions formed coherent functional groups. Collectively, these results show that the controlled blending of mineral rigidity and organic flexibility enables the rational design of moisture-responsive, biodegradable seed coatings. All experiments were conducted under controlled laboratory conditions, and field-scale validation is required to confirm agronomic performance.

在可持续材料设计中，平衡机械完整性和水响应性的生物基复合涂层的开发仍然是一个关键挑战。在这项研究中，使用滑石粉（层状无机填料）和桉树木粉（木质纤维素纤维填料）配制了矿物-有机混合涂层，以研究填料成分如何影响甘蓝型油菜种子造粒中的粉末流动性、涂层粘聚性和水分调节功能。不同的粒径分布和填料的吸湿特性产生了可调的密度和孔隙率在滑石-桉树的比例。增加有机组分可提高流动性，降低表观密度。这种转变伴随着更高的平衡水分含量和溶解度，表明亲水性增加和水分缓冲改善。力学试验表明，纯滑石粉涂层易碎且易崩解，而含有40 - 60%桉树的混合物具有最佳抗压强度（4-5 N），高抗裂性（>1200 s），可忽略破碎。发芽试验表明，这些中间配方保持高发芽率（88%）和活力，优于矿物和有机为主的涂料。聚类分析证实中间成分形成了连贯的官能团。总的来说，这些结果表明，矿物刚性和有机柔韧性的可控混合能够合理设计水分响应，可生物降解的种子涂层。所有试验均在受控的实验室条件下进行，并需要进行田间规模验证以确认农艺性能。

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引用次数: 0

Bifunctional inhibitors of benzotriazole-loaded Ce-MOFs advanced anti-corrosion of epoxy coating 负载苯并三唑的双功能抑制剂增强环氧涂层的防腐性能

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-01-10 DOI: 10.1016/j.porgcoat.2026.109952

Sirui Han , Cheng Ke , Yang Wu , Bo Yu , Xianzong Wang , Long Wang , Dongsheng Li , Feng Zhou , Jianxi Liu

The addition of corrosion inhibitors to epoxy resin coatings is an effective strategy of preventing corrosion process of the substrate. However, the anti-corrosion performance of epoxy resin coatings is not satisfactory in terms of long period of time, owing to the leaking out of corrosion inhibitors. In this paper, we present a composite epoxy resin coating with enhanced long-term anti-corrosion performance, achieved through the synergistic combination of inorganic and organic corrosion inhibitors that refer to metal-organic frameworks (MOFs) with controlled loading of benzotriazole (BTA). The complexation of the inorganic corrosion inhibitor Ce⁴⁺ within the UiO-67 structure (UiO-67-Ce) is accomplished by partially substituting organic ligands with Ce-coordinated 2,2′-bipyridine-5,5′-dicarboxylic acid (Bpydc-Ce). Then, organic corrosion inhibitor BTA is further incorporated into the UiO-67-Ce@BTA by solvent loading process. The organic and inorganic inhibitors-loaded MOFs are dispersed in the epoxy matrix to fabricate anti-corrosion coatings via spraying-coating method. The UiO-67-Ce@BTA/epoxy coating exhibits high corrosion inhibition efficiency (99.95 %), due to efficient release of the bifunctional inhibitors. Additionally, scratch test of the UiO-67-Ce@BTA/epoxy coating demonstrates active corrosion protection performance, which can effectively mitigate localized corrosion. Therefore, we establish an organic-inorganic synergistic anti-corrosion strategy using UiO-67-Ce@BTA as functional nanofillers, offering promising strategy for corrosion protection.

在环氧树脂涂层中添加缓蚀剂是防止基体腐蚀的有效方法。然而，由于缓蚀剂的泄漏，环氧树脂涂料的防腐性能在长时间内并不令人满意。在本文中，我们提出了一种复合环氧树脂涂层，具有增强的长期防腐性能，通过无机和有机缓蚀剂的协同组合，指的是金属-有机框架（MOFs）与控制负载苯并三唑（BTA）。无机缓蚀剂Ce4+通过ce配位的2,2′-联吡啶-5,5′-二羧酸（Bpydc-Ce）部分取代有机配体，与UiO-67结构（UiO-67- ce）进行络合。然后，通过溶剂加载工艺将有机缓蚀剂BTA进一步掺入UiO-67-Ce@BTA中。将负载有机和无机缓蚀剂的mof分散在环氧基体中，采用喷涂法制备防腐涂层。由于双功能抑制剂的有效释放，UiO-67-Ce@BTA/环氧涂层具有较高的缓蚀效率（99.95%）。此外，UiO-67-Ce@BTA/环氧涂层的划痕试验表明，该涂层具有有效的防腐性能，可以有效地减轻局部腐蚀。因此，我们建立了一种有机-无机协同防腐策略，以UiO-67-Ce@BTA为功能纳米填料，为防腐提供了有前途的策略。

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引用次数: 0

Thermally induced crystallinity modulation in polycaprolactone reinforced epoxy coating for enhanced tribological performance 热诱导结晶度调制聚己内酯增强环氧涂层的摩擦学性能

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-01-10 DOI: 10.1016/j.porgcoat.2025.109923

Yang Ou , Yifan Fang , Sirui Han , Chen Liu , Long Wang , Dongsheng Li , Feng Zhou , Jianxi Liu

Epoxy protective coatings have garnered significant attention due to their cost-effectiveness, ease of application, and tunable properties for protecting diverse substrates. However, their broader application and long-term performance are limited by inherent brittleness and suboptimal tribological properties of epoxy resins. In this study, we addressed these challenges by developing a composite coating through strategic incorporation of polycaprolactone (PCL) into epoxy resin followed by controlled thermal treatment. The crystallinity of PCL was regulated by systematically optimizing thermal treatment parameters, including temperature, holding duration, and cooling rate. The flexible PCL molecular chains enhance toughness through energy dissipation via chain slippage, while the crystalline domains increase surface hardness and reduce adhesive wear. Specifically, at the optimal thermal treatment temperature of 140 °C, the PCL/EP coating achieved an ideal mechanical property, demonstrating a reduced coefficient of friction of 0.11 (83.1 % reduction) and an extremely low wear rate of 1.17 × 10⁻⁵ mm³·N⁻¹·m⁻¹ (99.6 % reduction). This work presents a strategy for improving the tribological performance of epoxy coatings using PCL. The superior tribological performance of the self-lubricating coating makes it suitable for a wide range of engineering applications, with the potential for extended durability.

环氧保护涂料因其成本效益，易于应用和可调的性能而受到广泛关注，可保护各种基材。然而，环氧树脂固有的脆性和不理想的摩擦学性能限制了它们的广泛应用和长期性能。在这项研究中，我们通过将聚己内酯（PCL）战略性地掺入环氧树脂中，然后进行受控热处理，开发了一种复合涂层，解决了这些挑战。通过系统优化热处理参数，包括温度、保温时间和冷却速度来调节PCL的结晶度。柔性PCL分子链通过链滑移的能量耗散来提高韧性，而晶体域增加表面硬度并减少粘接磨损。具体来说，在140°C的最佳热处理温度下，PCL/EP涂层获得了理想的力学性能，其摩擦系数降低了0.11（降低83.1%），磨损率极低，为1.17 × 10−5 mm3·N−1·m−1（降低99.6%）。本文提出了一种改进环氧树脂涂层摩擦学性能的方法。自润滑涂层优越的摩擦学性能使其适用于广泛的工程应用，具有延长耐用性的潜力。

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引用次数: 0

Enhancing mechanical and tribological performance of polyimide coatings using MXene@ZrO2 hybrid fillers 使用MXene@ZrO2杂化填料增强聚酰亚胺涂层的机械和摩擦学性能

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-01-09 DOI: 10.1016/j.porgcoat.2025.109942

Rui Nie , Wenfu Zeng , Hongyu Shi , Jia Wei , Cheng Qian

Under extreme operating conditions, the bearing bush pair in swashplate-type variable displacement axial piston pumps is prone to wear, which compromises the safety and reliability of the overall hydraulic system. To enhance the tribological performance of the tin-bronze bearing bushes, in this study, MXene@ZrO₂ hybrid fillers were synthesized through surface modification with dopamine and KH550. Subsequently, five polyimide (PI) coatings—pure PI, ZrO₂/PI, MXene/PI, ZrO₂ + MXene/PI, and MXene@ZrO₂/PI—were prepared on tin-bronze substrate surfaces via in-situ polymerization. Finally, the tribological properties of the five PI coatings were then evaluated through friction testing. The results indicated that ZrO₂ was successfully grafted onto the surface and interlayer regions of MXene, forming a distinctive “particle-on-plane” structure. Compared to the tin-bronze substrate, t the coefficient of friction and wear rate of the MXene@ZrO₂/PI composite coating reduced by approximately 48 % and 91 %, respectively. This was accompanied by the formation of a continuous and uniform transfer film on the steel ball surface. Among the investigated coatings, MXene@ZrO₂/PI demonstrated the best overall tribological performance. These findings provide theoretical guidance for the design of high-performance solid lubricants and PI-based composite coatings.

斜盘式变量轴向柱塞泵的轴瓦副在极端工况下容易发生磨损，影响整个液压系统的安全性和可靠性。为了提高锡青铜轴瓦的摩擦学性能，本研究采用多巴胺和KH550对锡青铜轴瓦进行表面改性，合成MXene@ZrO2杂化填料。随后，通过原位聚合在锡青铜基体表面制备了纯PI、ZrO2/PI、MXene/PI、ZrO2 + MXene/PI和MXene@ZrO2/PI五种聚酰亚胺（PI）涂层。最后，通过摩擦试验对五种PI涂层的摩擦学性能进行了评价。结果表明，ZrO2成功接枝到MXene的表面和层间区域，形成了独特的“面上粒子”结构。与锡青铜基体相比，MXene@ZrO2/PI复合涂层的摩擦系数和磨损率分别降低了约48%和91%。同时在钢球表面形成连续均匀的转移膜。在所研究的涂层中，MXene@ZrO2/PI表现出最佳的整体摩擦学性能。这些发现为高性能固体润滑剂和pi基复合涂层的设计提供了理论指导。

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引用次数: 0

A durable, superhydrophobic TiO2/fluorinated graphene composite coating for enhanced antibiofouling and mechanical stability 一种耐用的超疏水TiO2/氟化石墨烯复合涂层，用于增强抗污垢和机械稳定性

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-01-08 DOI: 10.1016/j.porgcoat.2026.109953

Jing Xu , Wissal Mahfoudi , JunYan Yang , Jiadi Lian , Tie Zhang

The formation of surface biofilms poses a major threat in biomedical and industrial environments, leading to chronic infections, device malfunction, and the spread of antibiotic resistance genes. To prevent initial microbial adhesion and biofilm development, the design of durable antibacterial and antifouling surfaces is therefore essential. In this study, a superhydrophobic titanium dioxide–fluorinated graphene (TiO₂@FG, abbreviated as TFG) composite coating was fabricated via a simple one-step spraying technique. Leveraging the strong particle-adsorption capability of the FG surface, the issue of metal nanoparticle aggregation within the coating was effectively addressed. The resulting TFG coating possesses ultra-low surface energy and a stable micro-nano hierarchical architecture, which synergistically confer long-term antifouling efficacy. Quantitative assessments revealed a 77.9% reduction in protein adsorption after 12 h and sustained bacterial adhesion resistance below 20% even after 120 h on the TFG surface, compared to unmodified stainless steel. Furthermore, the coating exhibited exceptional mechanical robustness, retaining a water contact angle above 150° and an adhesion force under 30 μN after repeated abrasion. Under a friction test at 12 MPa for 30 min, the low friction coefficient stabilized at 0.08. These superior properties are attributed to the synergistic effect between TiO₂ “pinning” and FG self-lubrication within the surface-hierarchical microstructure. The TFG coating a offers promising pathway toward the development of durable, non-fouling, and mechanically stable surfaces for biomedical implants, food-contact applications, and hygiene-critical public facilities.

表面生物膜的形成对生物医学和工业环境构成了重大威胁，导致慢性感染、设备故障和抗生素耐药基因的传播。为了防止最初的微生物粘附和生物膜的发展，耐用的抗菌和防污表面的设计是必不可少的。在本研究中，通过简单的一步喷涂技术制备了超疏水二氧化钛-氟化石墨烯（TiO2@FG，简称TFG）复合涂层。利用FG表面强大的颗粒吸附能力，有效解决了金属纳米颗粒在涂层内聚集的问题。所得的TFG涂层具有超低表面能和稳定的微纳分层结构，协同作用赋予长期防污效果。定量评估显示，与未改性的不锈钢相比，TFG表面在12 h后蛋白质吸附减少77.9%，即使在120 h后细菌粘附阻力仍低于20%。此外，涂层表现出优异的机械坚固性，在反复磨损后，涂层的水接触角保持在150°以上，附着力保持在30 μN以下。在12 MPa、30 min的摩擦试验中，低摩擦系数稳定在0.08。这些优异的性能归因于TiO2“钉住”和FG自润滑在表面分层微观结构中的协同作用。TFG涂层为生物医学植入物、食品接触应用和卫生关键公共设施的耐用、无污垢和机械稳定表面的开发提供了有希望的途径。

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引用次数: 0