{"title":"Graphene oxide-assisted hybrid assembled fireproof nanocoatings for exceptional flame-retardant and smoke-suppressant flexible polyurethane foam","authors":"Jiayan Zhang, Haibo Zhao, Bowen Liu, Zihao Wang, Shuaiqi Guo, Furong Zeng, Yuzhong Wang","doi":"10.1016/j.cej.2024.156865","DOIUrl":null,"url":null,"abstract":"Plagued by inherent flammability, fabricating a uniform dense protective coating compatible of flame retardancy and smoke suppression is one of the most feasible ways to decrease the fire risk of lightweight polymeric foams. However, effectively integrating synergistic fire protection and simple fabrication processes remains a great challenge for the poor flame retardancy of single component. Herein, a graphene oxide-assisted assembly strategy is proposed for fabricating organic-inorganic hybrid 2D nanocoating, which is compatible with a facile one-step flocculation coating process, showcasing superior flame retardancy and smoke suppression efficiency for polyurethane foam without deterioration of its mechanical performance. Due to the uniform hybridization nature of nanocoating and its highly synergistic radical scavenging, gaseous dilution, and physical barrier effects, the resulting foam can rapidly self-extinguish without melt dripping during vertical burning, while also simultaneously exhibits a high limited oxygen index value, low heat (−66.5 %) and smoke release (−69.5 %), exhibiting more effective in protection of foam compared to single component or simple physical blends, powerfully defending against fire attack. This facile GO-assisted hybrid strategy provides new insight for designing high-performance fireproof nanocoating with ubiquitous nanoparticles.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":null,"pages":null},"PeriodicalIF":13.3000,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Engineering Journal","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1016/j.cej.2024.156865","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Plagued by inherent flammability, fabricating a uniform dense protective coating compatible of flame retardancy and smoke suppression is one of the most feasible ways to decrease the fire risk of lightweight polymeric foams. However, effectively integrating synergistic fire protection and simple fabrication processes remains a great challenge for the poor flame retardancy of single component. Herein, a graphene oxide-assisted assembly strategy is proposed for fabricating organic-inorganic hybrid 2D nanocoating, which is compatible with a facile one-step flocculation coating process, showcasing superior flame retardancy and smoke suppression efficiency for polyurethane foam without deterioration of its mechanical performance. Due to the uniform hybridization nature of nanocoating and its highly synergistic radical scavenging, gaseous dilution, and physical barrier effects, the resulting foam can rapidly self-extinguish without melt dripping during vertical burning, while also simultaneously exhibits a high limited oxygen index value, low heat (−66.5 %) and smoke release (−69.5 %), exhibiting more effective in protection of foam compared to single component or simple physical blends, powerfully defending against fire attack. This facile GO-assisted hybrid strategy provides new insight for designing high-performance fireproof nanocoating with ubiquitous nanoparticles.
由于轻质聚合泡沫材料本身易燃,因此,制造一种兼具阻燃和抑烟性能的均匀致密保护涂层是降低其火灾风险的最可行方法之一。然而,由于单一成分的阻燃性能较差,如何有效地将协同防火与简单的制造工艺结合起来仍然是一个巨大的挑战。本文提出了一种氧化石墨烯辅助组装策略,用于制造有机-无机杂化二维纳米涂层,该策略与简便的一步法絮凝涂层工艺相兼容,在不降低聚氨酯泡沫机械性能的前提下,展现出卓越的阻燃性和抑烟效率。由于纳米涂层的均匀杂化特性及其高度协同的自由基清除、气体稀释和物理阻隔效应,所制得的泡沫在垂直燃烧时可迅速自熄,且无熔体滴落,同时还表现出高限氧指数值、低热量(-66.5 %)和低烟雾释放量(-69.5 %),与单组分或简单的物理混合物相比,对泡沫的保护更为有效,能有力地抵御火灾的侵袭。这种简便的 GO 辅助混合策略为利用无处不在的纳米粒子设计高性能防火纳米涂层提供了新的思路。
期刊介绍:
The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.