中国塑料 ›› 2024, Vol. 38 ›› Issue (3): 38-43.DOI: 10.19491/j.issn.1001-9278.2024.03.007

• 材料与性能 • 上一篇    下一篇

壳聚糖⁃磺化石墨烯层层自组装涂层对硬质聚氨酯泡沫的阻燃抑烟性能研究

徐锦佳1,2(), 黄腾1,2, 柏志成1,2, 沈佳豪1,2, 谢清怡1, 朱俊辉1, 戴进峰1,2(), 刘元强3, 詹先旭3   

  1. 1.浙江农林大学化学与材料工程学院,杭州 311300
    2.浙江省木材科学与技术重点实验室,杭州 311300
    3.德华兔宝宝装饰新材股份有限公司,浙江 湖州 313200
  • 收稿日期:2023-08-21 出版日期:2024-03-26 发布日期:2024-03-28
  • 通讯作者: 戴进峰(1984-),男,博士,主要从事绿色阻燃剂设计及复合材料高性能化等研究,jinfengdai0601@gmail.com
    E-mail:814967192@qq.com;jinfengdai0601@gmail.com
  • 作者简介:徐锦佳(1998-),女,在读硕士研究生,主要从事生物质复合材料阻燃改性,814967192@qq.com
  • 基金资助:
    国家自然基金项目(51903222);浙江省自然基金项目(LY21E030001);浙江农林大学人才引进启动基金资助项目(2017FR017);浙江农林大学学生创新创业训练计划项目(2023KX029)

Flame retardancy and smoke suppression of rigid polyurethane foam coated with chitosan⁃sulfonated graphene through layer⁃by⁃layer self⁃assembly

XU Jinjia1,2(), HUANG Teng1,2, BAI Zhicheng1,2, SHEN Jiahao1,2, XIE Qingyi1, ZHU Junhui1, DAI Jinfeng1,2(), LIU Yuanqiang3, ZHAN Xianxu3   

  1. 1.College of Chemistry and Materials Engineering,Zhejiang A&F University,Hangzhou 311300,China
    2.Key Laboratory of Wood Science and Technology of Zhejiang Province,Zhejiang A & F University,Hangzhou 311300,China
    3.Dehua TB New Decoration Material Co,Ltd,Huzhou 313200,China
  • Received:2023-08-21 Online:2024-03-26 Published:2024-03-28
  • Contact: DAI Jinfeng E-mail:814967192@qq.com;jinfengdai0601@gmail.com

摘要:

采用以水为溶液的层层自组装法(LBL)在硬质聚氨酯泡沫(RPUF)表面构筑了不同层数的壳聚糖⁃磺化石墨烯的生物基阻燃涂层,探索了不同层数(xBL)对RPUF阻燃、抑烟性能的影响。结果表明,覆有防火涂层的RPUF表现出优异的阻燃性、热稳定性和抑烟能力,且其性能随着涂覆层数增加而增强;与未处理的样品相比,经过5层自组装涂覆的RPUF⁃5BL可通过UL 94 V⁃0级,极限氧指数(LOI,35.1 %)和800 ℃残炭量(34.9 %,质量分数,下同)分别提高了78.2 %和85.6 %;热释放速率峰值(pHRR,163.9 kW/m2)、总产烟量(TSP,9.1 m2)、最大烟密度(MSD,22.9 %)和烟密度等级(SDR,14.9)分别下降了30.6 %、14.2 %、61.9 %和120.1 %。

关键词: 聚氨酯, 泡沫, 阻燃, 抑烟, 磺化石墨烯, 层层自组装

Abstract:

In this paper, a bio⁃based flame⁃retardant coating with different chitosan⁃sulfonated graphene layers was constructed on the surface of a RPUF by using a water⁃based layer⁃by⁃layer self⁃assembly method (LBL). The influence of different layers on the flame retardancy and smoke suppression of the RPUF was intensively investigated. The results indicated that the RPUF coated with the flame⁃retardant coating exhibited excellent flame⁃retardant performance, high thermal stability, and good smoke suppression, which were also affecting by the numbers of coating layers. The 5⁃layer⁃self⁃assembly coated RPUF (RPU⁃5BL) reached a UL 94 V⁃0 rating in the vertical burning test along with a limiting oxygen index of 35.1 vol% and a char yield of 34.9 wt% at 800 ℃, which were increased by 78.2 % and 85.6 %, respectively, compared to the untreated RPUF. Moreover, the RPU⁃5BL exhibited a peak heat release rate of 163.9 kW/m2, a total smoke production of 9.1 m2, a maximum smoke density of 22.9 %, and a smoke density grade of 14.9, which decreased by 30.6%, 14.2%, 61.9%, and 120.1%, respectively, compared to the controlled sample.

Key words: polyurethane, foam, flame retardant, smoke suppression, sulfonated graphene, layer?by?layer self?assembly

中图分类号: