{"title":"Enhanced thermal conductivity and anticorrosion capabilities of epoxy composite coating with quercetin-modified boron nitride","authors":"","doi":"10.1016/j.porgcoat.2024.108773","DOIUrl":null,"url":null,"abstract":"<div><p>Hexagonal boron nitride (h-BN) as an ideal two-dimensional nanofiller is often utilized to enhance the thermal conductivity and anticorrosion in the polymer matrix composites. However, the poor compatibility and dispersibility severely restrict its further application. To address this issue, herein, a novel h-BN (FBN) filler with excellent compatibility and dispersibility performances was prepared using a bio-based quercetin modifier by a non-covalent modification method. Leveraging the good compatibility between quercetin and epoxy resin (EP), FBN exhibits good dispersion in the EP. Results from thermogravimetric analysis (TG), derivative thermogravimetry (DTG), and differential scanning calorimetry (DSC) analyses prove that the addition of FBN not only significantly improves the thermal conductivity but also evidently enhances the thermal stability of the polymer matrix composite. When the mass ratio of micro-FBN to nano-FBN is 2:1, the optimized FBN/EP composite coating can further enhance the thermal conductivity with 2.385 W m<sup>−1</sup> K<sup>−1</sup>. Additionally, electrochemical impedance spectroscopy (EIS) and neutral salt spray (NSS) analyses demonstrate the superior long-term corrosion protection capability of the FBN composite coating, much better than pure EP and h-BN coatings. This is attributable to that the better dispersion and compatibility of FBN in the composite coating further enhances its barrier effect.</p></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":null,"pages":null},"PeriodicalIF":6.5000,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Progress in Organic Coatings","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0300944024005654","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract
Hexagonal boron nitride (h-BN) as an ideal two-dimensional nanofiller is often utilized to enhance the thermal conductivity and anticorrosion in the polymer matrix composites. However, the poor compatibility and dispersibility severely restrict its further application. To address this issue, herein, a novel h-BN (FBN) filler with excellent compatibility and dispersibility performances was prepared using a bio-based quercetin modifier by a non-covalent modification method. Leveraging the good compatibility between quercetin and epoxy resin (EP), FBN exhibits good dispersion in the EP. Results from thermogravimetric analysis (TG), derivative thermogravimetry (DTG), and differential scanning calorimetry (DSC) analyses prove that the addition of FBN not only significantly improves the thermal conductivity but also evidently enhances the thermal stability of the polymer matrix composite. When the mass ratio of micro-FBN to nano-FBN is 2:1, the optimized FBN/EP composite coating can further enhance the thermal conductivity with 2.385 W m−1 K−1. Additionally, electrochemical impedance spectroscopy (EIS) and neutral salt spray (NSS) analyses demonstrate the superior long-term corrosion protection capability of the FBN composite coating, much better than pure EP and h-BN coatings. This is attributable to that the better dispersion and compatibility of FBN in the composite coating further enhances its barrier effect.
期刊介绍:
The aim of this international journal is to analyse and publicise the progress and current state of knowledge in the field of organic coatings and related materials. The Editors and the Editorial Board members will solicit both review and research papers from academic and industrial scientists who are actively engaged in research and development or, in the case of review papers, have extensive experience in the subject to be reviewed. Unsolicited manuscripts will be accepted if they meet the journal''s requirements. The journal publishes papers dealing with such subjects as:
• Chemical, physical and technological properties of organic coatings and related materials
• Problems and methods of preparation, manufacture and application of these materials
• Performance, testing and analysis.