Progress in Organic Coatings最新文献_第10页

Enhanced thermal conductivity of UHMWPE by coating boron nitride and polyurethane composites 通过氮化硼和聚氨酯复合材料涂层增强超高分子量聚乙烯的导热性能

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2024-10-06 DOI: 10.1016/j.porgcoat.2024.108848

Jiajing Zhang , Zhuan Fu , Chunhua Zhang , Feng Qiu , Jiahao Xu , Liangjun Xia , Yuhai Guo , Weilin Xu

{"title":"Enhanced thermal conductivity of UHMWPE by coating boron nitride and polyurethane composites","authors":"Jiajing Zhang , Zhuan Fu , Chunhua Zhang , Feng Qiu , Jiahao Xu , Liangjun Xia , Yuhai Guo , Weilin Xu","doi":"10.1016/j.porgcoat.2024.108848","DOIUrl":"10.1016/j.porgcoat.2024.108848","url":null,"abstract":"<div><div>The development of textile wearable electronics has increased demands and requirements for thermal management materials due to integrated and miniaturized soft equipment. In this work, the surface of ultrahigh molecular weight polyethylene (UHMWPE) fibers was first decorated by polydopamine (PDA) to improve the surface activity and construct a steady interface layer. Then the boron nitride/polyurethane coating surface modified UHMWPE composite yarns with good thermal conductivity were produced using a coaxial wet forming process. The thermally conductive composite yarns demonstrated great mechanical properties (5.09 % strain, 0.79 N/tex strength) and thermal conductivity (0.54 ± 0.02 W·mK<sup>−1</sup>) with the BN/PU weight ratio of 1. Furthermore, the resistance to failure cycles was taken place, and the composite yarns kept good thermal conductivity after multiple cycles twisting, bending, washing, cooling and heating cycles. By the coaxial wet fabrication, the thermally conductive composite yarns were constructed, offering a viable and trustworthy method for creating polymer-based thermal interface materials with high thermal conductivity.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"197 ","pages":"Article 108848"},"PeriodicalIF":6.5,"publicationDate":"2024-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428528","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}

引用次数: 0

Degradable polylactic acid-reinforced acrylate polymer coating for marine antifouling 用于船舶防污的可降解聚乳酸增强丙烯酸酯聚合物涂层

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2024-10-04 DOI: 10.1016/j.porgcoat.2024.108824

Hao Xu , Yanjian Wang , Chunhua Ni , Guangling He , Xia Li , Xiaohui Jiang , Liangmin Yu

{"title":"Degradable polylactic acid-reinforced acrylate polymer coating for marine antifouling","authors":"Hao Xu , Yanjian Wang , Chunhua Ni , Guangling He , Xia Li , Xiaohui Jiang , Liangmin Yu","doi":"10.1016/j.porgcoat.2024.108824","DOIUrl":"10.1016/j.porgcoat.2024.108824","url":null,"abstract":"<div><div>Marine biofouling is one of the major challenges facing human exploitation of the oceans. Although marine antifouling coatings are effective in dealing with marine fouling, coatings simultaneously exhibiting low cost, long life, and environmental friendliness are lacking. Herein, a degradable acrylate polymer with long-term effectiveness is prepared; the side chain of this polymer consists of polylactic acid (PLA) and natural rosin. PLA can undergo hydrolysis and degradation on the coating surface, resulting in the antimicrobial and anti-algal properties of the coating while promoting the self-renewal of the polymer-coated surface. The polymer coating thereby exhibits excellent self-polishing properties, with the coating surface maintaining activity even in static environments. The polymer coating exhibits good resistance to protein adsorption as well as excellent bacterial inhibition (>99.9 % inhibition) and algal inhibition (>87.1 % inhibition) because of the synergistic effect between the rapidly degradable PLA and the antimicrobial properties of natural rosin. After 240 days of testing in real marine environments, the polymer coatings still provide good antifouling protection, comparable to that of proven antifouling coatings containing antifouling agents. The proposed coating is an environmentally friendly solution for preventing marine fouling adhesion.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"197 ","pages":"Article 108824"},"PeriodicalIF":6.5,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428527","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}

引用次数: 0

Investigation on the restoration properties of wood oil microcapsules in wood coatings 木油微胶囊在木器涂料中的修复性能研究

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2024-10-03 DOI: 10.1016/j.porgcoat.2024.108853

Lei Ma, Shuyan Xu

引用次数: 0

Green superhydrophobic surface engineering of PET fabric for advanced water-solvent separation 用于先进水溶剂分离的 PET 织物的绿色超疏水表面工程

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2024-10-03 DOI: 10.1016/j.porgcoat.2024.108842

Hadi Taghavian , Muhammad Zaman Khan , Jakub Wiener , Jiri Militky , Blanka Tomkova , Mohanapriya Venkataraman , Zahid Ali Zafar , Miroslav Cernik , Lukas Dvorak

{"title":"Green superhydrophobic surface engineering of PET fabric for advanced water-solvent separation","authors":"Hadi Taghavian , Muhammad Zaman Khan , Jakub Wiener , Jiri Militky , Blanka Tomkova , Mohanapriya Venkataraman , Zahid Ali Zafar , Miroslav Cernik , Lukas Dvorak","doi":"10.1016/j.porgcoat.2024.108842","DOIUrl":"10.1016/j.porgcoat.2024.108842","url":null,"abstract":"<div><div>This paper presents the preparation of the PET membrane for effective organic solvent separation achieved through an advanced superhydrophobic surface engineering of PET fabric utilizing biomimicry and a green chemistry approach. The superhydrophobicity of the PET surface was reached through a hierarchical nanocomposite coating that involved the integration of biomimetic polydopamine (PDA) coating, green-synthesized zinc oxide (ZnO) nanoparticles (NPs), and non-fluorinated quaternary ammonium cation silane (Si-QAC) coverage. The morphology and surface chemical composition of the resultant Si-QAC/ZnO/PDA@PET membrane were characterized by SEM, EDS, FT-IR, XRD, and AFM analysis. The surface topography and water contact angle were also correlated with surface roughness and its superhydrophobicity. The resulting Si-QAC/ZnO/PDA@PET membrane exhibited promising superhydrophobic properties, characterized by a water contact angle ranging from 150° to 160° and a roll-off angle between 5° and 2° as well as stability against severe conditions, including acidic and alkaline exposure, mechanical abrasion, and UV radiations. Moreover, the Si-QAC/ZnO/PDA@PET membrane exhibited bacterial repulsive properties against <em>E. coli</em> and <em>Staphylococcus</em> sp. The separation efficiency of various aliphatic and aromatic organic solvents (n-hexane, toluene, chloroform, and petroleum ether) from water higher than 90 % was also observed, making the membrane a potential candidate for different industrial applications, particularly for the separation of organic solvents from water.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"197 ","pages":"Article 108842"},"PeriodicalIF":6.5,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428525","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}

引用次数: 0

Effect of functionalized halloysite nanotubes on fire resistance and water tolerance of intumescent fire-retardant coatings for steel structures 功能化埃洛石纳米管对钢结构膨胀型防火涂料耐火性和耐水性的影响

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2024-10-02 DOI: 10.1016/j.porgcoat.2024.108843

Qi Zhang , Yongjun Shu , Yinghao Zhang , Siqi Huo , Guofeng Ye , Cheng Wang , Zhitian Liu

{"title":"Effect of functionalized halloysite nanotubes on fire resistance and water tolerance of intumescent fire-retardant coatings for steel structures","authors":"Qi Zhang , Yongjun Shu , Yinghao Zhang , Siqi Huo , Guofeng Ye , Cheng Wang , Zhitian Liu","doi":"10.1016/j.porgcoat.2024.108843","DOIUrl":"10.1016/j.porgcoat.2024.108843","url":null,"abstract":"<div><div>To improve the comprehensive performance of intumescent fire-retardant coatings, the functionalized halloysite nanotubes (HNTs-D, HNTs@Fe<sub>3</sub>O<sub>4</sub>, and HNTs-D@Fe<sub>3</sub>O<sub>4</sub>) were synthesized as synergistic flame retardants and incorporated into intumescent fire-retardant coatings (IFRC) for steel structures, demonstrating significant flame retardant properties. Among these modified halloysite nanosheets, HNTs-D@Fe<sub>3</sub>O<sub>4</sub> showed the best flame retardancy and water resistance. Adding the optimal addition amount (3 wt%) of HNTs-D@Fe<sub>3</sub>O<sub>4</sub> can increase the residual weight of coating from 28.10 % to 38.40 % and reduce the backside temperature of the coated steel plate from 288 °C to 177 °C, indicating that HNTs-D@Fe<sub>3</sub>O<sub>4</sub> can effectively improve the thermal stability and insulation performances of intumescent fire-retardant coatings. Cone calorimetric analysis showed HNTs-D@Fe<sub>3</sub>O<sub>4</sub> can effectively suppress the heat and smoke release of the intumescent fire-retardant coatings. Compared with the unmodified coating sample, the total heat release (THR) and total smoke release (TSR) of the HNTs-D@Fe<sub>3</sub>O<sub>4</sub>-containing coating sample were reduced by 66.04 % and 11.36 %. HNTs-D@Fe<sub>3</sub>O<sub>4</sub> facilitates the formation of dense char layers confirmed by the micro morphology characterization. Further mechanism analysis shows that HNTs-D@Fe<sub>3</sub>O<sub>4</sub> has obvious catalytic carbonization effect and is helpful to construct the dense expanded char layer with higher graphitization degree. The uniformly dispersed HNTs-D@Fe<sub>3</sub>O<sub>4</sub> improved the water resistance of intumescent fire-retardant coatings, which is mainly due to the hydrophobicity and barrier effect, thus effectively preventing the loss of water-soluble components.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"197 ","pages":"Article 108843"},"PeriodicalIF":6.5,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428523","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}

引用次数: 0

Tough bio-based thermosets with dual curing capability via epoxy and allylic functionality 坚韧的生物基热固性塑料，具有环氧和烯丙基双重固化功能

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2024-10-02 DOI: 10.1016/j.porgcoat.2024.108844

Bohdan Domnich , Yehor Polunin , Sagar Thorat , Mukund Sibi , Andriy Voronov

{"title":"Tough bio-based thermosets with dual curing capability via epoxy and allylic functionality","authors":"Bohdan Domnich , Yehor Polunin , Sagar Thorat , Mukund Sibi , Andriy Voronov","doi":"10.1016/j.porgcoat.2024.108844","DOIUrl":"10.1016/j.porgcoat.2024.108844","url":null,"abstract":"<div><div>Acrylic monomer from high oleic soybean oil (HO-SBM) was combined with vanillin-derived aromatic counterpart, 2-glycidoxy-5-vinylanisole (GVA), in chain copolymerization to design tough biobased thermosets with a dual-curing capability. Under specified conditions, a polymer network can be formed by selective cross-linking of epoxy groups of GVA or HO-SBM allylic groups as well as dual-curing via epoxy-amine and autoxidation mechanisms simultaneously. Glass transition temperature of the synthesized copolymers increases with the GVA content, although the values fall in a rather narrow range (−10 °C to 7 °C).</div><div>Thermosets cured via epoxy-amine and dual-curing have a significantly denser network when compared to autooxidation. Such an increase in cross-link density led to improved chemical (solvent) resistance and hardness of thermoset coatings. At the same time, a higher GVA fraction in the chain (from 37 to 44 wt%) noticeably increases Young's modulus of thermosets (up to 235 MPa). A substantial modulus increase at the rubbery plateau was observed for epoxy-amine and dual-curing thermosets with 44 wt% of GVA.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"197 ","pages":"Article 108844"},"PeriodicalIF":6.5,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428524","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}

引用次数: 0

Protocatechualdehyde-based epoxy vitrimer with low dielectric, excellent flame retardancy, and recyclability 具有低介电值、优异阻燃性和可回收性的原代邻苯二甲酸环氧树脂玻璃基聚物

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2024-10-02 DOI: 10.1016/j.porgcoat.2024.108819

Hui Yang , Guoming Yuan , Zhijun Liu , Yanhan Tao , Panpan Yang , Kun Wu , Jun Shi , Peiwei Hong , Li Yang

{"title":"Protocatechualdehyde-based epoxy vitrimer with low dielectric, excellent flame retardancy, and recyclability","authors":"Hui Yang , Guoming Yuan , Zhijun Liu , Yanhan Tao , Panpan Yang , Kun Wu , Jun Shi , Peiwei Hong , Li Yang","doi":"10.1016/j.porgcoat.2024.108819","DOIUrl":"10.1016/j.porgcoat.2024.108819","url":null,"abstract":"<div><div>Conventional bisphenol A epoxy resins cannot meet the requirements of the new generation of electronic/electrical industries in terms of dielectric properties and flame retardancy and are challenging to reprocess after molding, resulting in waste of resources and environmental hazards. Therefore, a tetrafunctional active ester curing agent (TIE) was successfully synthesized by a one-pot method using biomass protocatechualdehyde as raw materials, followed by curing DGEBA to prepare an epoxy vitrimer (TIE/DGEBA). MHHPA/DGEBA was chosen for comparison since the –OH was also absent after curing. The results showed that TIE/DGEBA had good combinatorial performance, thanks to the unique structure of TIE, including active ester units, siloxane chains, and aromatic Schiff base groups. TIE/DGEBA possessed a lower dielectric constant (2.9 vs. 4.0) compared to MHHPA/DGEBA, which was attributed to the synergistic effect of the less-polar siloxane chain segments, bulky benzene structure, and lower cross-linking density (1971 vs. 733 mol/cm<sup>3</sup>) of TIE/DGEBA. The aromatic Schiff base not only imparted good thermal stability (T<sub>30%</sub> = 418.0 vs. 422.2 °C) to TIE/DGEBA but ensured that it allowed for recycling and reprocessing. After solvent recycling, the resin can be remolded without significant change in tensile strength (53.0 vs. 46.3 MPa). TIE/DGEBA displayed better flame retardancy with higher residual weight (28.2 % vs. 5.5 %), lower total heat release (29.6 vs. 43.5 kJ/g), and good resistance to thermal oxidization. The structural and performance characteristics of TIE/DGEBA offer a strategy for designing multifunctional epoxy-based materials in electrical/electronic applications.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"197 ","pages":"Article 108819"},"PeriodicalIF":6.5,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428520","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}

引用次数: 0

Structural regulation and wear-corrosion resistance of fluorocarbon/epoxy multi-layer biomimetic soft-hard alternating polymer coatings 氟碳/环氧多层仿生软硬交替聚合物涂层的结构调整和耐磨蚀性

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2024-10-02 DOI: 10.1016/j.porgcoat.2024.108846

Yujie Rong , Jin Yan , Ying Zhang , Shaofeng Zhou , Jin Huang , Guizhe Zhao , Yaqing Liu

{"title":"Structural regulation and wear-corrosion resistance of fluorocarbon/epoxy multi-layer biomimetic soft-hard alternating polymer coatings","authors":"Yujie Rong , Jin Yan , Ying Zhang , Shaofeng Zhou , Jin Huang , Guizhe Zhao , Yaqing Liu","doi":"10.1016/j.porgcoat.2024.108846","DOIUrl":"10.1016/j.porgcoat.2024.108846","url":null,"abstract":"<div><div>To address the issue of single-layer coatings with uniform hardness being prone to damage and cracking under complex working conditions, and their inadequate protective capabilities, a multi-layered coating structure was designed based on the principle of bivalve shells' resistance to erosion through a combination of soft and hard materials. This design involves alternating layers of hard epoxy resin and soft fluorocarbon resin, creating a multi-cycle layered coating. The study investigated the impact of modulation periods between layers on the mechanical, wear, and corrosion resistance properties of the coatings. It was found that coatings with alternating soft and hard layers exhibited superior overall mechanical properties compared to those made of single-hardness or single-softness materials, given the same thickness. The double-cycle Double coating, due to the presence of soft layers, significantly improved the wear resistance of the coating, with wear rates reduced by 72.8 % and 56.6 % compared to EP and FEVE, respectively. Additionally, the double-cycle Double coating showed an impedance modulus above 10<sup>7</sup> Ω·cm<sup>2</sup> in the later stages of immersion, which is 63.6 % higher than that of the single-cycle Single structure. The multi-layered structure effectively covered the pores formed by the evaporation of curing solvents in the resin, reducing the permeability of the coating to corrosive media and enhancing its corrosion resistance.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"197 ","pages":"Article 108846"},"PeriodicalIF":6.5,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428047","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}

引用次数: 0

Eco-friendly covalently connected silicone hydrogel with negatively charged surface for marine anti-biofouling 用于海洋防生物污染的表面带负电荷的环保型共价连接硅酮水凝胶

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2024-10-01 DOI: 10.1016/j.porgcoat.2024.108833

Yuqing Zhu , Jiawen Sun , Qingfu Wang , Jizhou Duan , Xingda Liu , Ding Guo , Baorong Hou

{"title":"Eco-friendly covalently connected silicone hydrogel with negatively charged surface for marine anti-biofouling","authors":"Yuqing Zhu , Jiawen Sun , Qingfu Wang , Jizhou Duan , Xingda Liu , Ding Guo , Baorong Hou","doi":"10.1016/j.porgcoat.2024.108833","DOIUrl":"10.1016/j.porgcoat.2024.108833","url":null,"abstract":"<div><div>In this study, a silicone hydrogel (Gel-TA-Si-x) with amphiphilic and negatively charged surfaces was prepared by combining low surface free energy silicone with highly hydrophilic hydrogel materials using the method of one-step solvent-free bulk polymerization. The hydrogel films exhibited good mechanical properties. This was primarily reflected in the high tensile strength (1 MPa) and elongation at break (358.1 %). Notably, the film exhibited increased hydrophobicity, higher water contact angle and gradual decline in water absorption rate as the mPDMS monomer dosage increased. Despite this, the surface free energy remained low at 22.1 mJ m<sup>−2</sup>, indicating effective fouling release capability (removal strength against pseudobarnacles was 0.16 MPa). In addition, the surface zeta potential of the hydrogel was as low as −86 mV (at pH = 10). Laboratory antifouling performance tests indicated that the surface negativity of the material enhanced its static antifouling performance and the hydrogel with a negatively charged surface exhibited high bacterial adhesion resistance of 93 % and good resistance to <em>Chlorella</em> adherence and biofilm inhibition. Favorable anti-fouling performance was observed after 180 d of marine field testing. Moreover, the covalent connection of silicone monomers with hydrogel monomers through copolymerization create a stable three-dimension crosslinking network, thereby improving the durability of materials in complex marine environments. This study provides a new idea for developing efficient and environmentally friendly silicone hydrogel antifouling materials.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"197 ","pages":"Article 108833"},"PeriodicalIF":6.5,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428438","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}

引用次数: 0

Graphene/polyaniline waterborne composite coatings for metallic bipolar plates 用于金属双极板的石墨烯/聚苯胺水性复合涂层

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2024-10-01 DOI: 10.1016/j.porgcoat.2024.108829

Yiquan Qi , Jincan Cui , Fucheng Guo , Jing Li

{"title":"Graphene/polyaniline waterborne composite coatings for metallic bipolar plates","authors":"Yiquan Qi , Jincan Cui , Fucheng Guo , Jing Li","doi":"10.1016/j.porgcoat.2024.108829","DOIUrl":"10.1016/j.porgcoat.2024.108829","url":null,"abstract":"<div><div>Waterborne composite coatings were formulated for protection of metallic bipolar plates. The challenges lied in two aspects, one was the confliction between high electrical conductivity and good corrosion protection properties; the other was the water dispersibility of the constituent phases. Water-solubility of polyaniline (PANI) were controlled by adding polystyrene sulfonic acid during the polymerization of aniline. Graphene was functionalized by p-aminobenzoic acid and <em>p</em>-phenylenediamine to enhance the compatibility with PANI, while keeping the electrical conductivity of graphene at around 169 S/cm. Upon in-situ polymerization of the functionalized graphene/PANI composites, the electrical conductivity varied significantly from 41 S/cm to 91 S/cm with the surface functionality of graphene. The composite coatings were prepared thereafter with functionalized graphene/PANI/carbon black on the surface of 316 L stainless steel by centrifugal spraying coating. The interfacial contact resistance of the coatings reached 4 mΩ·cm<sup>2</sup>, comparable to Au coatings, but the corrosion current density was 4.37 μA/cm<sup>2</sup> due to the existence of the hydrophilic groups in waterborne coatings, like amino groups and sulfonic acid groups. A post-treatment was carried out to consume some of the amino groups, so that the corrosion current density was decreased to 0.88 μA/cm<sup>2</sup>.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"197 ","pages":"Article 108829"},"PeriodicalIF":6.5,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428437","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}

引用次数: 0