{"title":"Preparation of wood-based surface coatings with dual functions of flame retardancy and superhydrophobicity by sand-in method","authors":"Xingzhou Yao, Haiqiao Zhang, Zhangqian Kong, Linjun Zhong, Yanxin Zhao, Yan Wu","doi":"10.1016/j.porgcoat.2025.109244","DOIUrl":null,"url":null,"abstract":"<div><div>The natural defects of wood limit their use. In this study, an Al<sub>2</sub>O<sub>3</sub>@EP@PDMS composite coating was successfully prepared on the surface of the wood substrate using the sand-in method to obtain a bifunctional coating with both superhydrophobic and flame retardant properties. It was found that the coating uniformly covers the surface of the wood substrate and provides mechanical, chemical and flame retardant properties such as abrasion and corrosion resistance. The limiting oxygen index (LOI) of superhydrophobic coated wood (SH-Wood) was increased from 19.8 % to 28.2 % for untreated wood (Natural Wood). CONE calorimetry tests showed that SH-Wood had 33.8 % less total heat release, 49.5 % less peak heat release, and a 23.2 % reduction in total smoke production, compared to Natural Wood by 23.2 %. The water repellency of the coating is greatly improved, with a water contact angle of 157° and a sliding angle of 2.3°. What's more, SH-Wood was exposed to different corrosive liquids and high temperatures of 100 °C, as well as tested by abrasion, peeling and scratching, which confirmed the excellent durability of the coating on the wood surface. The results of the study provide new ideas for the preparation of wood surface coatings with dual functions of superhydrophobicity and flame retardancy.</div></div>","PeriodicalId":20834,"journal":{"name":"Progress in Organic Coatings","volume":"204 ","pages":"Article 109244"},"PeriodicalIF":6.5000,"publicationDate":"2025-03-15","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/S0300944025001936","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
The natural defects of wood limit their use. In this study, an Al2O3@EP@PDMS composite coating was successfully prepared on the surface of the wood substrate using the sand-in method to obtain a bifunctional coating with both superhydrophobic and flame retardant properties. It was found that the coating uniformly covers the surface of the wood substrate and provides mechanical, chemical and flame retardant properties such as abrasion and corrosion resistance. The limiting oxygen index (LOI) of superhydrophobic coated wood (SH-Wood) was increased from 19.8 % to 28.2 % for untreated wood (Natural Wood). CONE calorimetry tests showed that SH-Wood had 33.8 % less total heat release, 49.5 % less peak heat release, and a 23.2 % reduction in total smoke production, compared to Natural Wood by 23.2 %. The water repellency of the coating is greatly improved, with a water contact angle of 157° and a sliding angle of 2.3°. What's more, SH-Wood was exposed to different corrosive liquids and high temperatures of 100 °C, as well as tested by abrasion, peeling and scratching, which confirmed the excellent durability of the coating on the wood surface. The results of the study provide new ideas for the preparation of wood surface coatings with dual functions of superhydrophobicity and flame retardancy.
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.