Tan Jiaojun, Xu Wenlong, Du Shengjing, Xu Jinge, Zhang Meiyun, Song Shunxi, Yang Bin, Nie Jingyi, He Hui
{"title":"Flexible and robust aramid/octadecane phase change materials from nonaqueous emulsion template towards efficient thermal storage and camouflage","authors":"Tan Jiaojun, Xu Wenlong, Du Shengjing, Xu Jinge, Zhang Meiyun, Song Shunxi, Yang Bin, Nie Jingyi, He Hui","doi":"10.1016/j.cej.2024.157240","DOIUrl":null,"url":null,"abstract":"Phase change materials have been widely used in energy storage, temperature regulation, and thermal management. However, the complex preparation process and leakage risk are long-standing bottlenecks for phase change materials. In this work, we report a strategy to encapsulate phase change materials (octadecane, OD) with heterocyclic aramid (HA) via oil-in-oil emulsion platforms (OD-in-HA emulsion), and the OD-in-HA emulsion was further processed into OD/HA phase change films and fibers. These materials feature an HA encapsulation shell and OD as the core, combining HA’s mechanical strength and environmental resistance with OD’s thermal storage properties. The phase change films with 62 % OD not only have excellent tensile strength (14.68 MPa), strain (44.62 %), enthalpy (167.92 J/g) and low subcooling degree but also exhibit almost no leakage (<4%) and stable cyclic stability, which does not decrease significantly after 40 heating/cooling cycles. Besides, the OD/HA films and fibers possess good infrared stealth and battery thermal management performance. This work proposes a continuous and scalable approach for constructing high-performing aramid-based phase change materials and significantly expanding the application of phase change materials.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":null,"pages":null},"PeriodicalIF":13.3000,"publicationDate":"2024-10-30","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.2024.157240","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
Phase change materials have been widely used in energy storage, temperature regulation, and thermal management. However, the complex preparation process and leakage risk are long-standing bottlenecks for phase change materials. In this work, we report a strategy to encapsulate phase change materials (octadecane, OD) with heterocyclic aramid (HA) via oil-in-oil emulsion platforms (OD-in-HA emulsion), and the OD-in-HA emulsion was further processed into OD/HA phase change films and fibers. These materials feature an HA encapsulation shell and OD as the core, combining HA’s mechanical strength and environmental resistance with OD’s thermal storage properties. The phase change films with 62 % OD not only have excellent tensile strength (14.68 MPa), strain (44.62 %), enthalpy (167.92 J/g) and low subcooling degree but also exhibit almost no leakage (<4%) and stable cyclic stability, which does not decrease significantly after 40 heating/cooling cycles. Besides, the OD/HA films and fibers possess good infrared stealth and battery thermal management performance. This work proposes a continuous and scalable approach for constructing high-performing aramid-based phase change materials and significantly expanding the application of phase change materials.
相变材料已被广泛应用于储能、温度调节和热管理等领域。然而,复杂的制备过程和泄漏风险是相变材料长期存在的瓶颈。在这项工作中,我们报告了一种通过油包油乳液平台将相变材料(十八烷,OD)与杂环芳纶(HA)封装在一起的策略(OD-in-HA 乳化液),并将 OD-in-HA 乳化液进一步加工成 OD/HA 相变薄膜和纤维。这些材料以 HA 为封装外壳,以 OD 为核心,将 HA 的机械强度和耐环境性与 OD 的蓄热性能结合在一起。含 62% OD 的相变薄膜不仅具有出色的拉伸强度(14.68 兆帕)、应变(44.62%)、热焓(167.92 焦耳/克)和低过冷度,而且几乎没有泄漏(<4%),并且具有稳定的循环稳定性,在 40 次加热/冷却循环后也不会明显降低。此外,OD/HA 薄膜和纤维还具有良好的红外隐身和电池热管理性能。这项研究提出了一种连续、可扩展的方法,用于构建高性能芳纶基相变材料,大大拓展了相变材料的应用领域。
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.