Progress in Organic Coatings最新文献_第3页

Multilayer composite yarn with graphene and carbon nanotubes for electrothermal-induced thermochromism 石墨烯和碳纳米管多层电致热变色复合纱

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-01-22 DOI: 10.1016/j.porgcoat.2026.109992

Zichen Zheng , Minjie Xu , Jinfeng Wang

To endow flexible electronics with multifunctionality, we report a hierarchical strategy that synergizes structural design with functional integration. Graphene (Gr) and multi-walled carbon nanotubes (MWCNTs) were judiciously chosen as dual conductive fillers and co-assembled with thermochromic pigments to yield composite conductive yarns capable of both electrothermal regulation and electrochromic behavior. The Gr/MWCNT hybrid network outperforms either constituent alone, cutting resistance by as much as 69.5%. Under a 4 V bias, the equilibrium temperature differential among samples reaches 4.4 °C, and the optimal ink formulation is achieved at a Gr: MWCNT mass ratio of 2:1.

Employing a 30-tex fine-yarn architecture with double-layer wrapping, cotton fibers fully encapsulate the conductive core, while the incorporation of 25 wt% waterborne polyurethane (WPU) imparts superior film-formability. The resulting electrochromic composite yarn (ECYs-CCY) exhibits a tensile strength of 14.94 N and an elongation at break of 24.87%. The ECYs-SGCCY variant reaches steady-state temperature within 20 s and recovers to ambient within 15 s. After 200 mechanical deformation cycles and 7 electrothermal ON–OFF cycles, its electrothermal performance remains unaltered. Reversible, rapid electrochromic switching is retained, with both surface colour and chromic stability impervious to repeated deformation. This work establishes a robust material platform and scalable fabrication route for next-generation electrothermal and smart textiles.

为了使柔性电子具有多功能性，我们报告了一种结构设计与功能集成协同的分层策略。选择石墨烯（Gr）和多壁碳纳米管（MWCNTs）作为双导电填料，并与热致变色颜料共组装，得到既具有电热调节性能又具有电致变色性能的复合导电纱线。Gr/MWCNT混合网络优于单独的任何一种成分，可将阻力降低69.5%。在4 V偏置下，样品间的平衡温差达到4.4℃，当Gr: MWCNT质量比为2:1时，墨水配方达到最佳。采用30特级细纱结构，双层包裹，棉纤维完全封装导电芯，而加入25%水性聚氨酯（WPU）赋予卓越的成膜性。电致变色复合纱线（ECYs-CCY）的抗拉强度为14.94 N，断裂伸长率为24.87%。ECYs-SGCCY变体在20秒内达到稳态温度，并在15秒内恢复到环境温度。经过200次机械变形循环和7次电热ON-OFF循环，其电热性能保持不变。可逆的，快速的电致变色开关保留，表面颜色和铬稳定性不受反复变形的影响。这项工作为下一代电热和智能纺织品建立了一个强大的材料平台和可扩展的制造路线。

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引用次数: 0

A biomass-derived P/N/B synergistic flame retardant for cotton fabrics: achieving durable, high-efficiency flame retardancy with low smoke release 一种生物质衍生的P/N/B棉织物协同阻燃剂：实现持久、高效、低排烟阻燃

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-01-22 DOI: 10.1016/j.porgcoat.2026.109991

Tian Zhang , Xiao Song , Wanhai Ni , Xiangji Liu , Xiaolu Zhou , Jing Gao , Zhou Lu , Chaohong Dong

Traditional cotton fabric flame retardants containing phosphorus frequently suffer from formaldehyde emissions, excessive smoke release, and insufficient washing durability. This research developed TBMP, an innovative flame retardant coating absent halogens and formaldehyde which was developed based on an integrated P/N/B synergistic design. Cyanuric chloride served as a nitrogen rich backbone, phosphoric acid as an acid source, boric acid as an efficient smoke suppression component, and biomass derived mannitol as a sustainable carbon source, reflecting green and environmentally sustainable development principles. At a weight gain of 24.0%, the treated fabric achieved a LOI of 46.9% and a short char length of 6.3 cm. Thermogravimetric analysis showed enhanced char formation, with char residues increased by 10.88% in air and 28.09% in nitrogen at 700 °C. Cone calorimetry outcomes indicated a peak heat release rate decrease of 88.73% and a total heat release reduction of 47.07%, while maintaining a competitively low total smoke release (TSR) of 0.47 m² among superior flame-resistant systems, thus achieving a synergy of high flame retardancy and controlled smoke release. Furthermore, the formation of stable P–O–C covalent bonds between TBMP and cellulose endowed the treated fabric with excellent washing durability, retaining effective flame retardant performance after 50 laundering cycles. Meanwhile, the coating exerted only a minor influence on the whiteness and physical properties of the fabric. This work provides a sustainable and efficient strategy for constructing multifunctional flame retardant systems for cotton textiles.

传统的含磷棉织物阻燃剂经常存在甲醛释放、烟雾释放过多、洗涤耐久性不足等问题。基于P/N/B一体化协同设计，研制了新型无卤无甲醛阻燃涂料TBMP。三聚氰尿酸作为富氮骨架，磷酸作为酸源，硼酸作为高效抑烟组分，生物质衍生甘露醇作为可持续碳源，体现了绿色环保的可持续发展原则。在增重24.0%的情况下，织物的LOI为46.9%，焦炭长度为6.3 cm。热重分析表明，在700℃时，空气和氮气中炭的残留量分别增加了10.88%和28.09%。锥量热法结果表明，峰值放热率降低了88.73%，总放热率降低了47.07%，同时总放烟量（TSR）保持在0.47 m2的较低水平，在优异的阻燃体系中实现了高阻燃性和控烟的协同作用。此外，在TBMP和纤维素之间形成稳定的P-O-C共价键，使处理后的织物具有优异的洗涤耐久性，在洗涤50次后仍保持有效的阻燃性能。同时，涂层对织物的白度和物理性能的影响很小。本研究为构建多功能棉织物阻燃体系提供了一种可持续、高效的策略。

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引用次数: 0

Fabrication of LDH-MoO₄2−-Si coatings with enhanced anti-corrosion and self-repairing properties 具有增强抗腐蚀和自修复性能的LDH-MoO₄2−si涂层的制备

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-01-22 DOI: 10.1016/j.porgcoat.2026.109987

Xuming Fang , Zhelun Mai , Yingjian Guan , Guoliang Wu , Xiaoqing Du , Dongchu Chen

In this study, an LDH–MoO₄²⁻–Si composite coating, composed of layered double hydroxides (LDH), molybdate ions (MoO₄²⁻), and silane, was successfully fabricated on an aluminum alloy substrate. The morphology, structure, composition, corrosion resistance, and self-healing behavior of the coating were systematically investigated using scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), electrochemical impedance spectroscopy (EIS), and electrochemical noise (EN) techniques. Results show that the as-prepared coating is compact and homogeneous, with MoO₄²⁻ and silane uniformly distributed within the vertical lamellae of LDH, forming a distinctive “vertical sandwich” architecture of LDH → MoO₄²⁻ → silane → LDH. In 3.5 wt% NaCl solution, the coated aluminum alloy exhibits a corrosion current density approximately five orders of magnitude lower and a total impedance about six orders of magnitude higher than those of the bare substrate, demonstrating excellent corrosion resistance. After 90 days of immersion in the same solution, the coating retained a corrosion protection efficiency of 99.36%, confirming its long-term stability. The self-healing behavior of scratched coating was monitored via EN and further validated by SEM and XPS analyses. The release of MoO₄²⁻ ions from the LDH interlayers showed an intelligent stimulus-responsive characteristic, effectively promoting the self-repair process. After 7 days of immersion in 3.5 wt% NaCl solution, the damaged coating nearly recovered its original morphology, structure, and composition, achieving a self-healing efficiency of 97.73% and exhibiting remarkable autonomous recovery capability.

在本研究中，在铝合金衬底上成功制备了由层状双氢氧化物（LDH）、钼酸盐离子（MoO₄2−）和硅烷组成的LDH - MoO₄2−-Si复合涂层。采用扫描电镜（SEM）、x射线衍射（XRD）、傅里叶变换红外光谱（FTIR）、x射线光电子能谱（XPS）、电化学阻抗谱（EIS）和电化学噪声（EN）等技术对涂层的形貌、结构、组成、耐蚀性和自愈行为进行了系统的研究。结果表明：制备的涂层致密且均匀，MoO₄2−和硅烷均匀分布在LDH的垂直片层内，形成LDH→MoO₄2−→硅烷→LDH的“垂直夹心”结构。在3.5 wt% NaCl溶液中，涂层铝合金的腐蚀电流密度比裸基板低约5个数量级，总阻抗高约6个数量级，表现出优异的耐腐蚀性。在相同的溶液中浸泡90天后，涂层的防腐效率保持在99.36%，证实了其长期稳定性。通过EN监测涂层的自修复行为，并通过SEM和XPS分析进一步验证。从LDH中间层释放的MoO₄2−离子表现出智能刺激响应特性，有效促进了自修复过程。在3.5 wt% NaCl溶液中浸泡7天后，受损涂层的形貌、结构和成分基本恢复，自愈率达到97.73%，表现出显著的自主恢复能力。

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引用次数: 0

Hierarchically distributed nisin/NaCl particles in chitosan-based coatings with long-term antibacterial performance 具有长效抗菌性能的壳聚糖基涂料中分层分布的nisin/NaCl颗粒

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-01-21 DOI: 10.1016/j.porgcoat.2026.109973

Fang-Yu Fan , Jing-Chung Huang , Chia-Chin Wu , Shih-Fu Ou

In this study, a two-step coating technique was employed to fabricate a chitosan-based multilayer film on Ti6Al4V in which nisin/NaCl particles was hierarchically distributed. Nanoscale nisin/NaCl particles adhered to the outer surface of the chitosan layer, while microscale particles were embedded within the coating matrix. Experimental antibacterial evaluation revealed that the coating possessed immediate bactericidal activity, achieving 96.1% inhibition against Staphylococcus aureus (S. aureus) within 24 h and maintaining 95.0% inhibition after 48 h. Furthermore, the hydrophobicity of the coating and nisin-release inhibited bacterial adhesion. The coating had cell viability >80% and exhibited good adhesion on Ti6Al4V (rated according to ASTM 5B), which ensures the safety of implant applications. These results demonstrate that the hierarchical nisin/NaCl-loaded chitosan coating provides a non-cytotoxic and biocompatible antibacterial surface suitable for implant applications.

在本研究中，采用两步包覆技术在Ti6Al4V表面制备了一种基于壳聚糖的多层膜，其中nisin/NaCl颗粒分层分布。纳米级的nisin/NaCl颗粒粘附在壳聚糖层的外表面，而微米级的颗粒则嵌入在涂层基体中。实验抗菌评价表明，该涂层具有立即的抗菌活性，对金黄色葡萄球菌（S. aureus）的抑制作用在24 h内达到96.1%，在48 h后保持95.0%的抑制作用。此外，该涂层的疏水性和nisin的释放抑制了细菌的粘附。该涂层具有80%的细胞活力，并在Ti6Al4V（根据ASTM 5B评级）上表现出良好的附着力，确保了植入物应用的安全性。这些结果表明，分层负载的nisin/ nacl壳聚糖涂层提供了一种适合植入应用的无细胞毒性和生物相容性的抗菌表面。

引用次数: 0

A novel rust stabilization technology for weathering steels - Inspired by the “breathable coating” in the textile industry 一种用于耐候钢的新型防锈技术-灵感来自纺织行业的“透气涂层”

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-01-21 DOI: 10.1016/j.porgcoat.2026.109983

Junyi Gao , Weichen Xu , Binbin Zhang , Rongling Zhang , Yanshuai Wang , Donald Terry Greenfield , Baorong Hou

Corrosion resistance of weathering steels highly relies on the stable, uniform and compact rust layer, but it is difficult to form naturally and quickly, because the complication and variation of the environment will disturb the process. Rust stabilization technologies are necessary, while the current methods show limitations on cost-effectiveness, efficiency, easy-processability and eco-friendliness. Inspired by the idea of breathable coating in textile industry which allows water vapor to pass but blocks liquid water, a waterborne polyurethane (WPU) coating incorporated with custom-synthesized SiO₂ hollow nanoparticles has been developed in this work. The nanoparticles possess meso-pores on the shell and hollow structure in the middle, able to provide channels for water vapor, oxygen and chloride. Such coating allows rust deposition beneath it and acts as a temporary shelter against the external environment at the initial stage. Different coating thicknesses (10 μm to 40 μm) with different contents of SiO₂ nanoparticles (1 to 2 wt%) have been investigated on Q420 weathering steel, and the thickness of 10 μm and 2 wt% SiO₂ nanoparticles have been identified as the best option. Blistering and cracking resulted from rust expansion do not matter because a protective rust layer can form before the failure. This novel technology is promising in the perspectives of efficiency, cost, eco-friendliness and monitorability.

耐候钢的耐蚀性高度依赖于稳定、均匀、致密的锈层，但它很难自然、快速地形成，因为环境的复杂性和变化会干扰这一过程。防锈技术是必要的，而目前的方法在成本效益、效率、易加工性和生态友好性方面存在局限性。受纺织工业中透气涂层的启发，该涂层允许水蒸气通过，但阻挡液态水，本研究开发了一种水性聚氨酯（WPU）涂层，该涂层结合了定制合成的SiO2空心纳米颗粒。纳米颗粒的外壳上有介孔，中间有中空结构，能够为水蒸气、氧气和氯化物提供通道。这样的涂层允许铁锈沉积在其下面，并在初始阶段作为对外部环境的临时庇护所。对Q420耐候钢进行了不同涂层厚度（10 μm ~ 40 μm）和不同SiO2纳米颗粒含量（1 ~ 2 wt%）的研究，确定了10 μm和2 wt% SiO2纳米颗粒的最佳涂层厚度。锈蚀膨胀引起的起泡和开裂并不重要，因为在失效之前可以形成一层保护性的锈蚀层。这项新技术在效率、成本、生态友好性和可监测性等方面具有广阔的前景。

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引用次数: 0

Epoxy-carbon composite coatings for integrated corrosion and fouling resistance: Advancing protective material design 环氧碳复合涂层的综合腐蚀和抗污：先进的防护材料设计

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-01-21 DOI: 10.1016/j.porgcoat.2026.109970

Geetha Anbalagan , Balachandran Subramanian , Jeeva Jothi Kumaravel

Corrosion and biofouling remain persistent challenges in industrial and marine environments, leading to major economic losses and environmental concerns. Conventional epoxy coatings are valued for their strong adhesion and chemical resistance, but they are limited by brittleness, UV sensitivity, and poor long-term durability. The incorporation of carbon-based nanomaterials such as graphene, graphene oxide, carbon nanotubes, carbon black, and carbon quantum dots has revolutionized epoxy systems. These nanofillers enhance mechanical strength, barrier performance, and multifunctionality. These nanostructures improve corrosion resistance, impart antifouling and antibacterial properties through reactive oxygen species generation and biofilm inhibition. However, challenges such as nanoparticle dispersion, cost efficiency, environmental safety, and scalability remain. This review demonstrates advances in epoxy–carbon composites, focusing on nanotechnology-driven enhancements and their implications for next-generation coatings. It emphasizes the transition toward intelligent, self-healing, and sustainable systems, highlighting their potential to deliver durable, eco-friendly protection across diverse industrial applications.

腐蚀和生物污染是工业和海洋环境中持续存在的挑战，导致重大的经济损失和环境问题。传统的环氧涂料因其强大的附着力和耐化学性而受到重视，但它们受到脆性，紫外线敏感性和长期耐久性差的限制。碳基纳米材料（如石墨烯、氧化石墨烯、碳纳米管、炭黑和碳量子点）的掺入彻底改变了环氧树脂体系。这些纳米填料增强了机械强度、阻隔性能和多功能性。这些纳米结构通过活性氧的产生和生物膜的抑制，提高了耐腐蚀性，赋予了防污和抗菌性能。然而，诸如纳米颗粒分散、成本效率、环境安全和可扩展性等挑战仍然存在。这篇综述展示了环氧碳复合材料的进展，重点是纳米技术驱动的增强及其对下一代涂料的影响。它强调了向智能、自我修复和可持续系统的过渡，强调了它们在各种工业应用中提供持久、环保保护的潜力。

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引用次数: 0

Anticorrosion mechanism of waterborne epoxy coating containing polyaniline-adsorbed aluminum ions for carbon steel 含聚苯胺吸附铝离子的水性环氧涂料对碳钢的防腐机理

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-01-21 DOI: 10.1016/j.porgcoat.2026.109988

Yongsheng Hao, Mingze Hu, Chunyu Li, Yongwei Shen, Sijia Liu, Hongwei Chang, Pengcheng Li, Qi Yun, Lixin Song

A highly effective anticorrosion pigment, phytic acid-doped polyaniline adsorbed with aluminum ions (PANI-PA@Al), was developed to enhance barrier performance of waterborne epoxy coatings. PANI-PA@Al exhibits great monodispersity and can be homogeneously dispersed within waterborne epoxy coating matrix. With only 1 wt% PANI-PA@Al loading, the coating resistance of waterborne epoxy coating still maintains at 1.5 × 10¹⁰ Ω cm² even after 166-day continuous exposure in corrosive medium, demonstrating an excellent anticorrosion property. In addition, waterborne epoxy coating with PANI-PA@Al also shows obvious self-healing performance, which stems from an interaction between the passivating behavior of PANI and the chelation provided by the aluminum phytate moieties. PANI-PA@Al holds great promise as a highly efficient anticorrosion pigment for providing long-term protection to waterborne epoxy coatings.

为提高水性环氧涂料的阻隔性能，研制了一种吸附铝离子的植酸掺杂聚苯胺（PANI-PA@Al）高效防腐涂料。PANI-PA@Al具有良好的单分散性，可均匀分散在水性环氧涂料基体中。在1 wt% PANI-PA@Al载荷下，即使在腐蚀介质中连续暴露166天后，水性环氧涂料的耐蚀性仍保持在1.5 × 1010 Ω cm2，表现出优异的防腐性能。此外，PANI-PA@Al水性环氧涂料也表现出明显的自愈性能，这是聚苯胺的钝化行为与植酸铝部分提供的螯合作用相互作用的结果。PANI-PA@Al作为一种高效的防腐颜料，为水性环氧涂料提供长期保护，前景广阔。

引用次数: 0

Poly(propylene carbonate)-based pressure sensitive adhesives with tunable adhesive properties and biodegradable performance 聚碳酸丙烯酯基压敏胶粘剂，具有可调节的粘接性能和可生物降解性能

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-01-21 DOI: 10.1016/j.porgcoat.2026.109981

Dongdong Wang , Jiapeng Li , Jing Jin , Yanxiong Pan , Xiangling Ji , Wei Jiang

Pressure-sensitive adhesives (PSAs) are widely used in various fields, including packaging, medical, agriculture, and renewable energy. The synthesis of PSAs with both biodegradable and high-performance features is a topic of ongoing interest in academia and industry. In this study, a series of biodegradable poly(propylene carbonate)-polyol-(2-amino-4-hydroxy-6-methylpyrimidine)s (PPC-PEG-AHMPs) containing ureidopyrimidinone (UPy) motifs were successfully synthesized using isophorone diisocyanate (IPDI) to react with the oligomer of the hydroxyl groups terminated poly(propylene carbonate), polyethylene glycol (PEG), and 2-amino-4-hydroxy-6-methylpyrimidine (AHMP) in a single-vessel, stepwise chemical reaction. The suitable molecular weight of PPC-PEG-AHMPs, and the existence of quadruple hydrogen bonding motifs of UPy groups and other polar groups, bestow the PPC-PEG-AHMPs with tunable peeling strengths ranging from 0.3 to 12.7 N/cm. The as-prepared PPC-PEG-AHMPs also exhibit considerable biodegradation performance. These features demonstrate that PPC-PEG-AHMPs would be desirable candidates for high-performance and biodegradable PSAs in the future.

压敏胶（psa）广泛应用于包装、医疗、农业、可再生能源等领域。合成具有可生物降解和高性能特征的聚乳酸是学术界和工业界一直感兴趣的话题。在本研究中，利用异马酮二异氰酸酯（IPDI）与端羟基聚（碳酸丙烯酯）、聚乙二醇（PEG）和2-氨基-4-羟基-6-甲基嘧啶（AHMP）在单容器中分步化学反应，成功合成了一系列含有脲嘧啶（UPy）基序的可生物降解聚（碳酸丙烯酯）-多元醇-（2-氨基-4-羟基-6-甲基嘧啶）5 （PPC-PEG-AHMPs）。PPC-PEG-AHMPs适宜的分子量，以及UPy基团和其他极性基团的四重氢键基序的存在，使PPC-PEG-AHMPs具有0.3 ~ 12.7 N/cm的可调剥离强度。所制备的PPC-PEG-AHMPs也表现出相当好的生物降解性能。这些特征表明，PPC-PEG-AHMPs将是未来高性能和可生物降解的psa的理想候选者。

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引用次数: 0

Harnessing silicone runaway polymerization for an instantaneous intumescent fire-shielding silicone coating 利用硅失控聚合制备瞬时膨胀防火硅树脂涂层

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-01-20 DOI: 10.1016/j.porgcoat.2025.109940

Dingsong Wang , Youwei Zhu , Qian Zhang , Bin Liu , Jinyan Zhang , Liyan Liang , Chaolong Yang

Intumescent flame-retardant (IFR) systems represent a critical strategy for addressing fire challenges; however, conventional IFR systems often suffer from complex composition, poor substrate compatibility, and limited thermal stability under elevated temperatures. Utilizing the runaway hydrosilylation polymerization between tetravinylcyclotetrasiloxane (V₄) and 1,3,5,7-tetramethylcyclotetrasiloxane (H₄), a novel IFR system based on polyH₄V₄ was developed, which exhibits an ultrahigh cross-linking density and exceptional thermal stability. Upon thermal activation, hydrosilylation-driven runaway polymerization acts as a gas source, enabling the polyH₄V₄ to instantaneously expand and curing into a porous, thermally stable coating on the substrate surface. Finally, through modification with vinyl-functionalized polysiloxanes, the IFR system achieved significantly enhanced expanded coating thickness and thermal-shielding performance. The polymethylvinylsiloxane (PMVS)-modified variant demonstrated exceptional performance, achieving a 3.7-fold height expansion compared to the pure H₄V₄ sample, while the charring time of the protected wood substrate was more than doubled. Additionally, micro-region analysis of the ceramicized polyH₄V₄ was conducted using in situ XPS and TG-FTIR, revealing its flame-retardant mechanism. This work provides a scalable strategy for developing innovative IFR coatings based on runaway polymerization, demonstrating potential applications in protective coatings for urban infrastructure fire protection.

膨胀阻燃剂（IFR）系统是解决火灾挑战的关键策略；然而，传统的IFR系统通常存在复杂的成分、较差的衬底兼容性以及高温下有限的热稳定性。利用四乙烯基环四硅氧烷（V4）与1,3,5,7-四甲基环四硅氧烷（H4）之间的失控硅氢化聚合反应，开发了一种新型的基于聚h4v4的IFR体系，该体系具有超高的交联密度和优异的热稳定性。在热活化后，氢硅基化驱动的失控聚合作为气源，使polyH4V4能够瞬间膨胀并固化成基材表面多孔的热稳定涂层。最后，通过乙烯基功能化聚硅氧烷的改性，IFR体系的膨胀涂层厚度和热屏蔽性能得到了显著提高。聚甲基乙烯硅氧烷（PMVS）改性的变体表现出优异的性能，与纯H4V4样品相比，实现了3.7倍的高度膨胀，而受保护的木材基材的炭化时间增加了一倍以上。此外，利用原位XPS和TG-FTIR对陶瓷化的polyH4V4进行了微区分析，揭示了其阻燃机理。这项工作为开发基于失控聚合的创新IFR涂料提供了可扩展的策略，展示了在城市基础设施防火防护涂料中的潜在应用。

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引用次数: 0

PμSL 3D printing-constructed biomimetic hierarchical structures: For droplet manipulation and drag reduction PμSL 3D打印构建的仿生分层结构：用于液滴操作和减阻

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings

Pub Date : 2026-01-20 DOI: 10.1016/j.porgcoat.2026.109969

Gengbiao Chen , Kexian Huang , Jiaxing Lu , Jie Su , Xingbao Huang , Yuqi Ouyang , Jinlai Zhang , Weiwei Ming

Inspired by the multilevel micro/nano structures and intrinsic superhydrophobicity of snake scales, this study innovatively develops a biomimetic superhydrophobic coating with hierarchical millimeter-micrometer-nanometer structures through the integration of projection micro-stereolithography 3D printing and spray coating. 3D printing enables precise construction of millimeter contours and micrometer-scale protrusions, while spray coating introduces titanate-modified TiO₂ nanoparticles into an Epoxy/PDMS matrix to engineer nanoscale roughness, achieving synergistic multi-scale structural design. The 75° inclined micro-protrusion coating exhibits optimal superhydrophobicity with a water contact angle of 160.8° ± 2.5° and sliding angle <10° in the positive direction, sliding angle >25° in the negative direction featuring distinct anisotropic droplet manipulation. Droplet bouncing dynamics are regulable, with 45° maximizing horizontal displacement (2.87 mm) and 60° enhancing vertical rebound (3.85 mm). Numerical simulations validate that hierarchical structures stabilize air pockets and induce asymmetric pressure gradients, unraveling the mechanism of directional droplet behavior and drag reduction. The coating maintains robust performance, retaining a water contact angle >150° after 50 abrasion cycles and achieving 66.6% drag reduction at 200 s⁻¹. This work breaks through the limitations of traditional fabrication in multi-scale structural integration and functional regulation, establishing a novel strategy for customizable superhydrophobic surfaces via 3D printing-driven cross-scale engineering. It not only advances the fundamental understanding of structure-function relationships in biomimetic surfaces but also provides a promising pathway for enhancing efficiency in heat and mass transfer systems, microfluidic control, and energy-efficient fluid transport.

本研究以蛇鳞的多层次微纳米结构和固有的超疏水性为灵感，通过投影微立体光刻3D打印和喷涂相结合，创新地开发了一种具有毫米-微米-纳米级结构的仿生超疏水涂层。3D打印可以精确构建毫米级轮廓和微米级凸起，而喷涂将钛酸盐修饰的TiO₂纳米颗粒引入环氧树脂/PDMS基体中，以实现纳米级粗糙度，实现协同多尺度结构设计。75°倾斜微突出涂层表现出最佳的超疏水性，水接触角为160.8°±2.5°，正向滑动角为10°，反向滑动角为25°，具有明显的各向异性。液滴的弹跳动态是可调节的，45°水平位移最大化（2.87 mm）， 60°垂直弹跳增强（3.85 mm）。数值模拟验证了分层结构稳定气穴并诱导不对称压力梯度，揭示了定向液滴行为和减阻的机制。该涂层保持了良好的性能，在50次磨损循环后仍能保持150°的水接触角，并在200 s−1下实现66.6%的阻力降低。这项工作突破了传统制造在多尺度结构集成和功能调节方面的局限性，通过3D打印驱动的跨尺度工程，建立了一种可定制超疏水表面的新策略。它不仅促进了对仿生表面结构-功能关系的基本认识，而且为提高传热传质系统的效率、微流体控制和节能流体输送提供了一条有希望的途径。

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引用次数: 0