Progress in Organic Coatings最新文献_第2页

Investigation of multiple mechanisms in the development of high-performance sound-insulating waterborne coatings with inorganic and organic fillers

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2025-03-28 DOI: 10.1016/j.porgcoat.2025.109275

Lei Zhou , Zijuan Huang , Haitong Liu , Jing Wang , Liang Fang , Chunhua Lu , Zhongzi Xu

{"title":"Investigation of multiple mechanisms in the development of high-performance sound-insulating waterborne coatings with inorganic and organic fillers","authors":"Lei Zhou , Zijuan Huang , Haitong Liu , Jing Wang , Liang Fang , Chunhua Lu , Zhongzi Xu","doi":"10.1016/j.porgcoat.2025.109275","DOIUrl":"10.1016/j.porgcoat.2025.109275","url":null,"abstract":"<div><div>This study explores the sound insulation performance of various fillers in waterborne coatings, focusing on calcium carbonate and lighter organic alternatives. The sound insulation performance and mechanism of calcium carbonate were investigated, followed by the preparation of waterborne sound insulation coatings using lighter organic fillers. Two types of organic macromolecules (PVB and rubber granules) and two organic small molecules (AO-70 and AO-80) were selected. The particle size in the sound insulation equation for polymer/solid inorganic particle composites was corrected to predict and adjust the sound insulation of the composites. Impedance tube tests, scanning electron microscopy, and mechanical property analysis were utilized to systematically investigate the sound insulation performance of each filler and the relevant factors affecting STL. Compared to CaCO<sub>3</sub>, waterborne coatings made with organic fillers demonstrated excellent sound insulation performance. At an addition level of 20 phr, the average sound insulation of PVB and rubber granules increased from 17.47 dB to 21.17 dB and 23.496 dB, respectively. The sound insulation of AO-70 reached 21.972 dB at an addition of 30 phr, while the coating with 20 phr of AO-80 achieved 23.626 dB. The sound insulation mechanism of CaCO<sub>3</sub> primarily relies on sound energy reflection, whereas polymer organic fillers offer better compatibility and tighter bonding with the matrix, as well as the unique viscoelasticity of polymer, resulting stronger matrix absorption and filler damping effects. Hindered phenol small molecule filler has excellent dissipation ability for sound wave due to the formation of reversible hydrogen bond and super damping element. Therefore, it shows the best sound insulation performance under the synergy of reflection, absorption and damping mechanisms.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"204 ","pages":"Article 109275"},"PeriodicalIF":6.5,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143726078","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

Low-temperature, ultra-giant blistering of atomic layer deposited barrier coatings on polyethylene films caused by additive segregation

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2025-03-28 DOI: 10.1016/j.porgcoat.2025.109261

János J. Tomán , Eszter Baradács , Gergő Vecsei , Lajos Nagy , Bence Parditka , Sándor Kéki , Zoltán Erdélyi

{"title":"Low-temperature, ultra-giant blistering of atomic layer deposited barrier coatings on polyethylene films caused by additive segregation","authors":"János J. Tomán , Eszter Baradács , Gergő Vecsei , Lajos Nagy , Bence Parditka , Sándor Kéki , Zoltán Erdélyi","doi":"10.1016/j.porgcoat.2025.109261","DOIUrl":"10.1016/j.porgcoat.2025.109261","url":null,"abstract":"<div><div>Low-temperature plasma enhanced atomic layer deposition (PE-ALD) is an advanced method for coating flexible polyolefin polymers such as low-density polyethylene (LDPE) to improve their barrier properties against moisture and gases. The ALD process is highly sensitive to surface preparation, and LDPE is challenging to coat due to its highly non-polar nature. In this work, we reveal how the segregation of polymer additives to the surface (commonly known as blooming) can compromise the effectiveness of the barrier coatings. After coating a 10 μm thick LDPE film with a 50 nm thick Al<sub>2</sub>O<sub>3</sub> layer using low-temperature PE-ALD, we observed the formation of ultra-giant blisters (larger than previously reported) within minutes of removing the sample from the processing chamber. Our conclusion is that the segregated antioxidant component, tris(2,4-di-tert-butylphenyl)phosphite, traps some of the trimethylaluminium (TMA) used as an ALD precursor. After deposition, the trapped TMA reacts with the moisture in the environment and the gaseous reaction product leads to the formation of ultra-giant blisters with bubble diameters ranging from hundreds of microns to over a millimeter. The bursting of these bubbles creates discontinuities and an increased number of cracks in the 50 nm thick alumina coating, hugely deteriorating its barrier properties. This is a previously unknown failure mode of ALD layers deposited on polymer films as interactions with additives are rarely investigated. We also demonstrate how the appropriate pre-treatments can effectively mitigate this problem, improving the coating's reliability.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"204 ","pages":"Article 109261"},"PeriodicalIF":6.5,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Superhydrophobic epoxy coatings via pulsed laser processing

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2025-03-27 DOI: 10.1016/j.porgcoat.2025.109272

Ekaterina A. Kuzina , Maria A. Teplonogova , Alexandre M. Emelyanenko , Ludmila B. Boinovich

{"title":"Superhydrophobic epoxy coatings via pulsed laser processing","authors":"Ekaterina A. Kuzina , Maria A. Teplonogova , Alexandre M. Emelyanenko , Ludmila B. Boinovich","doi":"10.1016/j.porgcoat.2025.109272","DOIUrl":"10.1016/j.porgcoat.2025.109272","url":null,"abstract":"<div><div>Epoxy enamels are widely used for coating surfaces of structural and functional materials exposed to open atmospheres. However, most commercially available enamel brands, despite demonstrating good performance characteristics, have several limitations that restrict their application. These limitations include poor resistance to prolonged sunlight exposure, brittleness at low temperatures, susceptibility to cracking when the substrate deforms, wettability by aqueous media, and limited temperature resistance. This study demonstrates the potential to significantly enhance the multifunctional protective properties of enamel by imparting superhydrophobic characteristics to the surface of the finished coating. Using a commercially produced enamel as an example, the research shows that durable coatings can be achieved through pulsed laser treatment of the applied enamel layer, followed by chemisorption of functional fluorosilanes. The behavior of the resulting superhydrophobic coatings was evaluated under various conditions, including mechanical stress, thermal shock cycling, contact with aqueous media, and prolonged exposure to corrosive liquids. The designed superhydrophobic coating not only improved many existing protective properties but also introduced additional functional benefits to the coated surface. The approach proposed in this study can be adapted to enhance the properties of various types of enamels and substrates, offering a versatile solution for improving surface performance.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"204 ","pages":"Article 109272"},"PeriodicalIF":6.5,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704643","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

Photothermal self-healing and anti-corrosion water-borne coatings based on phytic acid-doped polyaniline

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2025-03-26 DOI: 10.1016/j.porgcoat.2025.109267

Jiangqing Liu , Wei Lin , Ren Liu, Jing Luo

{"title":"Photothermal self-healing and anti-corrosion water-borne coatings based on phytic acid-doped polyaniline","authors":"Jiangqing Liu , Wei Lin , Ren Liu, Jing Luo","doi":"10.1016/j.porgcoat.2025.109267","DOIUrl":"10.1016/j.porgcoat.2025.109267","url":null,"abstract":"<div><div>Over extended periods of use, it may appear micro-cracks on the coating due to physical damage or other factors, which could destroy the overall structure and reduce the protective effect of the coating. It is thus highly desirable to develop coatings with both self-healing and excellent anti-corrosion performance to elongate the service life of the coating. In this study, a novel type of intelligent water-borne coating with photothermal self-healing and anti-corrosion properties was exploited. The strategy is that phytic acid (PA) doped polyaniline (PANI) was utilized as the photothermal conversion material and green anti-corrosion filler. The influence of the PA:PANI ratio as well as PA-PANI content on the dispersibility of PA/PANI and the coating properties was explored using scanning electron microscopy, electrochemical impedance spectroscopy, and neutral salt spray tests. The doping of PANI by PA significantly improved the dispersibility of PANI in waterborne coatings. The incorporation of PA/PANI led to remarkable advancements in the adhesion, anticorrosive performance, and self-healing capability of the coating. Due to the corrosion inhibition of PANI, the coatings with 1–5 wt% PA/PANI exhibited enhanced corrosion resistance, with no pitting or corrosion product after 2000 h of salt spray testing. Additionally, the PA/PANI coating showed rapid crack closure behavior after 10 s of NIR light irradiation because of the photothermal property of PANI, achieving a repair efficiency of over 95 %.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"204 ","pages":""},"PeriodicalIF":6.5,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143696760","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

Boosting anti-corrosion and anti-fouling properties of photocured epoxy films with multi-epoxy siloxane monomer

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2025-03-26 DOI: 10.1016/j.porgcoat.2025.109262

Yiting Liu , Feng-Qi Liao , Yung-Chung Chen

{"title":"Boosting anti-corrosion and anti-fouling properties of photocured epoxy films with multi-epoxy siloxane monomer","authors":"Yiting Liu , Feng-Qi Liao , Yung-Chung Chen","doi":"10.1016/j.porgcoat.2025.109262","DOIUrl":"10.1016/j.porgcoat.2025.109262","url":null,"abstract":"<div><div>In this study, we used a low-surface-energy multifunctional cyclic siloxane monomer (TOCS) and commercial bisphenol-A epoxy resin (BE-188) to prepare highly efficient anti-corrosion and anti-fouling coatings (<strong>SAT</strong>) through cationic photopolymerization. The effects of the TOCS monomer on the coating, including photoreactivity, mechanical properties, transparency, and hydrophobicity, were investigated. The introduction of cyclic siloxane into the formulation not only contributed to hydrophobicity and adhesion properties, but also enhanced its mechanical, thermal, and chemical properties. Electrochemical analyses for anti-corrosion performance were conducted and found that the <strong>SAT-10</strong> coating exhibited the best anti-corrosion performance with corrosion protection value up to 99.8 %. Additionally, the coated films were tested to evaluate their chemical resistance and anti-fouling properties under acid, alkali solutions and drinks (such as cola, coffee, juice), respectively. Furthermore, the removal ability of activated carbon solids by water was also conducted. The network crosslinking density, hydrophobic and adhesion properties are beneficial for the contact between the coating and dirt or corrosive mediums (Cl-, H<sub>2</sub>O, O<sub>2</sub>). Therefore, we are confident that the environmentally friendly anti-corrosion and anti-fouling coating prepared by this research has great potential for widespread application.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"204 ","pages":"Article 109262"},"PeriodicalIF":6.5,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698120","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

Transparent polysiloxane/POSS hybrid coatings on polycarbonate for enhanced abrasion resistance and hydrophobicity

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2025-03-25 DOI: 10.1016/j.porgcoat.2025.109263

Anıl Kuban , Nursev Erdoğan , Bilge Baytekin , Hülya Yavuz Ersan

{"title":"Transparent polysiloxane/POSS hybrid coatings on polycarbonate for enhanced abrasion resistance and hydrophobicity","authors":"Anıl Kuban , Nursev Erdoğan , Bilge Baytekin , Hülya Yavuz Ersan","doi":"10.1016/j.porgcoat.2025.109263","DOIUrl":"10.1016/j.porgcoat.2025.109263","url":null,"abstract":"<div><div>Siloxane coatings can be applied via simple and low-cost sol-gel process, exhibit high mechanical strength and abrasion resistance, making them suitable for wide range of industrial use. However, acquiring high optical transparency and maintaining mechanical properties while providing functional properties, like hydrophobicity, remain a challenge. In this study, highly transparent and abrasion resistant coatings with improved hydrophobicity and enhanced elastic recovery were developed by combining both organic and inorganic precursors, TEOS (tetraethyl orthosilicate), GPTMS (3-glycidyloxypropyl trimethoxysilane) and Amino-functional Polyhedral Oligomeric Silsesquioxane (POSS). The effect of precursor ratios on the optical properties, such as transmittance, haze and yellowness index, as well as the mechanical properties, including hardness, young's modulus, elasticity and abrasion resistance of hybrid organic-inorganic siloxane coatings deposited on polycarbonate via flow-coating was examined. Chemical, morphological, optical and mechanical analyses of the coatings were done by FTIR, XPS, UV/vis spectroscopy, hazemeter, optical and confocal microscopy, contact angle, Taber abrasion, pencil hardness and nanoindentation. We achieved minimal haze of 0.44 % and a high optical transmittance of ∼83 % within the 400 nm to 700 nm wavelength range, and haze was increased only to 0.93 % after 1000 cycle of Taber abrasion. Also, water contact angles increased to ∼112<strong>°</strong> after inclusion of Amino-POSS molecules. These findings indicate that the developed hybrid organic-inorganic siloxane coatings show significant potential as transparent and abrasion-resistant multifunctional coatings.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"204 ","pages":"Article 109263"},"PeriodicalIF":6.5,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698119","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

Comparison of under-film corrosion behaviors under unsheltered and sheltered exposure conditions

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2025-03-25 DOI: 10.1016/j.porgcoat.2025.109253

Nobuaki Yoshioka, Keiichi Nakajima, Miku Goto, Hideyuki Taguchi

{"title":"Comparison of under-film corrosion behaviors under unsheltered and sheltered exposure conditions","authors":"Nobuaki Yoshioka, Keiichi Nakajima, Miku Goto, Hideyuki Taguchi","doi":"10.1016/j.porgcoat.2025.109253","DOIUrl":"10.1016/j.porgcoat.2025.109253","url":null,"abstract":"<div><div>Heavy-duty paints are applied to steel structures built in coastal areas. Some structures, such as bridges, are composed of parts that are directly exposed to the rain and other parts that are not exposed to the rain. In the latter parts, corrosion environments are sometimes severer than the former parts. To compare the under-film corrosion behaviors under such different exposure conditions, painted steel sheets were examined under unsheltered and sheltered exposure conditions. After the exposure tests, they were evaluated and analyzed by Electron Probe Micro Analyzer (EPMA), Raman imaging and microscopic FT-IR on cross-sections. In Raman imaging, the distributions of chemical states of corrosion products were obtained and compared with the elemental mapping results by EPMA. These detailed analysis data made it possible for us to consider corrosion behaviors. As a result, uniform corrosion of substrates was found under the unsheltered exposure condition, and localized corrosion of substrates was found under the sheltered exposure condition. In addition, not only distributions of sea salt particles but also chemical states of corrosion products under coating films were different between unsheltered and sheltered exposure. Based on these results, it is considered that corrosion products and sea salt particles were partially washed away by rain under the unsheltered exposure condition but remained under coating films under the sheltered exposure condition. In case of the latter condition, it is considered that sea salt particles in high humidity produced liquid films by deliquescence and caused anodic blisters and localized corrosion.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"204 ","pages":"Article 109253"},"PeriodicalIF":6.5,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143695912","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

Triple-synergistic anti-corrosion nanocapsules: Empowering coatings with outstanding corrosion resistance

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2025-03-25 DOI: 10.1016/j.porgcoat.2025.109254

Feng Guo, Haiyan Li, Jiaxin Ma, Han Yin, Hongxin Luo

{"title":"Triple-synergistic anti-corrosion nanocapsules: Empowering coatings with outstanding corrosion resistance","authors":"Feng Guo, Haiyan Li, Jiaxin Ma, Han Yin, Hongxin Luo","doi":"10.1016/j.porgcoat.2025.109254","DOIUrl":"10.1016/j.porgcoat.2025.109254","url":null,"abstract":"<div><div>Metal-organic frameworks (MOFs) provide significant benefits for loading metal corrosion inhibitors in anticorrosion on account of their high specific surface area and porous structure. Here, we present a novel BTA@Ce-ZIF-8 nanocapsule that exhibits pH-responsive behavior. Ce<sup>3+</sup> and Zn<sup>2+</sup> in the nanocapsule structure are common cathodic inhibitors, which can work in conjunction with the loaded metal corrosion inhibitor (benzotriazole) BTA to attain a triple anti-corrosion function. Q235 carbon steel is a common carbon structural steel, widely used in construction, bridges and other fields. The substrate used in this experiment is Q235 carbon steel. The incorporation of nanocapsules into the coating can impart self-repairing properties, as well as enhance its resistance to corrosion. The doping of Ce<sup>3+</sup> proved effective in improving the poor dispersion of ZIF-8, as evidenced by scanning electron microscope images. Furthermore, BTA@Ce-ZIF-8 nanocapsules exhibited the highest rate of corrosion inhibitor release under acidic conditions, as demonstrated by UV tests. The BTA loading capacity was approximately 6.9 wt%. After 30 days of soaking, electrochemical impedance spectroscopy (EIS) measurements revealed that the impedance modulus for the 2 wt% BTA@Ce-ZIF-8/EP scratch coating reached 5.30 × 10<sup>3</sup> Ω·cm<sup>2</sup>, significantly higher than that of the pure EP. For scratch-free coatings with 2 wt% BTA@Ce-ZIF-8 nanocapsules, the impedance modulus remained above 10<sup>8</sup> Ω·cm<sup>2</sup> after 50 days of immersion, showing remarkable self-repairing capabilities and corrosion resistance.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"204 ","pages":"Article 109254"},"PeriodicalIF":6.5,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143696761","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

Achieving scratch resistance and flame retardancy in transparent polycarbonate through P/N/Si synergistic coating

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2025-03-25 DOI: 10.1016/j.porgcoat.2025.109247

Zefan Feng , Wei Cai , Jing Gao , Guangyong Jiang , Liangyuan Qi , Jiajun Li , Yuan Hu , Fukai Chu , Weiyi Xing

{"title":"Achieving scratch resistance and flame retardancy in transparent polycarbonate through P/N/Si synergistic coating","authors":"Zefan Feng , Wei Cai , Jing Gao , Guangyong Jiang , Liangyuan Qi , Jiajun Li , Yuan Hu , Fukai Chu , Weiyi Xing","doi":"10.1016/j.porgcoat.2025.109247","DOIUrl":"10.1016/j.porgcoat.2025.109247","url":null,"abstract":"<div><div>Transparent polycarbonate(PC) has attracted more and more attention due to its excellent properties, but it is still a challenge to give PC scratch resistance and flame retardancy while maintaining transparency. Herein, a transparent flame-retardant coating was successfully applied to PC using a phosphorus-containing organic amine curing agent (PETA), combined with epoxyoligosiloxane (AEOS) and epoxy resin (TGDDM). All samples showed high transparency and good scratch resistance, as well as good flame retardancy and fire resistance. The PEOS-TG-3 coating achieved a pencil hardness of 4H and an adhesion rating of 4B, demonstrating enhanced scratch resistance. The PHRR and THR of PC/PEOS-TG-3 was 21.4 % and 30.1 % lower than that of pure PC. Due to its simple synthesis method and effective char expansion, this P/N/Si synergistic flame-retardant coating holds significant potential for applications in flame-retardant protection for polycarbonate. This work demonstrates that the P/N/Si synergistic system not only guarantees the scratch resistance of PC sheets but also improves its flame retardancy while ensuring that the transparency is almost unaffected. This provides a feasible solution for the design and preparation of PC coatings with low cost, high flame retardancy and scratch resistance.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"204 ","pages":"Article 109247"},"PeriodicalIF":6.5,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681810","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

Uniform electrodeposition of graphene/polypyrrole conductive coatings promoted by graphene quantum dots

IF 6.5 2区材料科学

Progress in Organic Coatings Pub Date : 2025-03-24 DOI: 10.1016/j.porgcoat.2025.109269

Chenglong Gong , Jincan Cui , Yahui Sun , Shuling Shen , Jing Li

{"title":"Uniform electrodeposition of graphene/polypyrrole conductive coatings promoted by graphene quantum dots","authors":"Chenglong Gong , Jincan Cui , Yahui Sun , Shuling Shen , Jing Li","doi":"10.1016/j.porgcoat.2025.109269","DOIUrl":"10.1016/j.porgcoat.2025.109269","url":null,"abstract":"<div><div>Electrodeposition of graphene reinforced polypyrrole (PPY) conductive coatings was challenging because the surface of graphene was chemically inert, leading to phase separation between graphene and PPY. Phytic acid (PA) was grafted on the surface of graphene by a two-step functionalization to enhance the dispersion stability of the electrodeposition electrolyte, as well as the interactions between functionalized graphene (PG) and PPY. The multiple phosphonic acid groups on PA molecules can dope the PPY molecules during its electro-polymerization. Graphene quantum dots (GQDs) interacted with pyrrole and PG though π-π interaction, providing negative charges, which facilitated the directional movement of PG under the electric field force, therefore, promoted the uniform film-formation of the composite coatings. As a result, the composite coatings showed the electrical conductivity of 175 S cm<sup>−1</sup>，interfacial contact resistance of 8.37 mΩ cm<sup>2</sup>, corrosion current density of 0.84 μA cm<sup>−2</sup> (by potentiodynamic polarization) and 0.95 μA cm<sup>−2</sup> (by potentiostatic polarization), satisfying the comprehensive properties requirements for bipolar plates, benefited from the high doping level and crystallinity of PPY, the balanced functionality and electrical conductivity of PG and the promotion of film-formation by GQDs.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"204 ","pages":"Article 109269"},"PeriodicalIF":6.5,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681805","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