In Situ Assembly of Nanostructured Polyelectrolyte Coatings by Aqueous Phase Separation toward Outstanding Thermal Insulation and Fire Resistance

IF 9.6 1区化学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Materials Letters Pub Date : 2024-11-15 DOI:10.1021/acsmaterialslett.4c0204110.1021/acsmaterialslett.4c02041

Wei Luo, Ting Wang*, Xue Gou, Jie Luo, Wenli An, Zhi-Cheng Fu, Jinni Deng, Hai-Bo Zhao* and Ming-Jun Chen*,

{"title":"In Situ Assembly of Nanostructured Polyelectrolyte Coatings by Aqueous Phase Separation toward Outstanding Thermal Insulation and Fire Resistance","authors":"Wei Luo, Ting Wang*, Xue Gou, Jie Luo, Wenli An, Zhi-Cheng Fu, Jinni Deng, Hai-Bo Zhao* and Ming-Jun Chen*, ","doi":"10.1021/acsmaterialslett.4c0204110.1021/acsmaterialslett.4c02041","DOIUrl":null,"url":null,"abstract":"Flame-retardant surface treatments effectively reduce the fire hazard of polymeric foams but are plagued by high coating thickness and deterioration of inherent thermal insulation. Constructing a nanostructure can significantly enhance the thermal insulation of coatings, but current methods usually rely on toxic solvents and harsh conditions. Herein, we present a facile and eco-friendly strategy employing a Cu2+-assisted aqueous phase separation (APS) strategy for the assembly of nanostructured polyelectrolyte coatings in situ. Exploiting the multiple cross-linking interactions between Cu2+ and the polyelectrolyte complex (PEC), the unique nanosheet (∼200 nm) structure was assembled in the PEC coating. When coated on rigid polyurethane foam (RPUF), the thermal conductivity was reduced to 28.1 from 30.0 mW/m·K. Moreover, the coated RPUF manifests a limiting oxygen index of 36% and reduces heat/smoke release (>60%). This work provides a facile and eco-friendly strategy to cast flame-retardant nanostructured coatings for materials with excellent integrated performances.","PeriodicalId":19,"journal":{"name":"ACS Materials Letters","volume":"6 12","pages":"5418–5428 5418–5428"},"PeriodicalIF":9.6000,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Materials Letters","FirstCategoryId":"92","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsmaterialslett.4c02041","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Flame-retardant surface treatments effectively reduce the fire hazard of polymeric foams but are plagued by high coating thickness and deterioration of inherent thermal insulation. Constructing a nanostructure can significantly enhance the thermal insulation of coatings, but current methods usually rely on toxic solvents and harsh conditions. Herein, we present a facile and eco-friendly strategy employing a Cu²⁺-assisted aqueous phase separation (APS) strategy for the assembly of nanostructured polyelectrolyte coatings in situ. Exploiting the multiple cross-linking interactions between Cu²⁺ and the polyelectrolyte complex (PEC), the unique nanosheet (∼200 nm) structure was assembled in the PEC coating. When coated on rigid polyurethane foam (RPUF), the thermal conductivity was reduced to 28.1 from 30.0 mW/m·K. Moreover, the coated RPUF manifests a limiting oxygen index of 36% and reduces heat/smoke release (>60%). This work provides a facile and eco-friendly strategy to cast flame-retardant nanostructured coatings for materials with excellent integrated performances.

Abstract Image

查看原文本刊更多论文

采用水相分离技术原位组装纳米结构聚电解质涂层以获得优异的隔热和耐火性能

阻燃表面处理有效地降低了聚合物泡沫材料的火灾危险性，但其涂层厚度大，固有保温性变差。构建纳米结构可以显著提高涂层的绝热性，但目前的方法通常依赖于有毒溶剂和恶劣的条件。在此，我们提出了一种简单而环保的策略，采用Cu2+辅助水相分离（APS）策略在原位组装纳米结构的聚电解质涂层。利用Cu2+与聚电解质复合物（PEC）之间的多重交联相互作用，在PEC涂层中组装了独特的纳米片（~ 200 nm）结构。当涂层在硬质聚氨酯泡沫（RPUF）上时，导热系数从30.0 mW/m·K降至28.1。此外，涂层RPUF表现出36%的极限氧指数，减少热/烟雾释放（>60%）。这项工作为具有优异综合性能的材料提供了一种简单而环保的阻燃纳米结构涂层。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

ACS Materials Letters MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

14.60

自引率

3.50%

发文量

261

期刊介绍： ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.