中国塑料 ›› 2025, Vol. 39 ›› Issue (4): 31-36.DOI: 10.19491/j.issn.1001-9278.2025.04.006

• 材料与性能 • 上一篇    下一篇

层状双氢氧化物原位生长ZIF⁃67纳米晶体用于阻燃环氧复合材料

宋昆朋(), 白伟, 谢美娜, 何吉宇(), 杨荣杰   

  1. 北京理工大学材料学院,北京 100081
  • 收稿日期:2024-06-28 出版日期:2025-04-26 发布日期:2025-04-23
  • 通讯作者: 何吉宇(1970—),男,教授,主要从事多功能复合材料研究,hejiyu@bit.edu.cn
    E-mail:13439970074@163.com;hejiyu@bit.edu.cn
  • 作者简介:宋昆朋(1996—),男,博士研究生,主要从事纳米复合材料研究,13439970074@163.com

In situ growth of ZIF-67 nanocrystals on layered double hydroxides for flame⁃retardant epoxy composites

SONG Kunpeng(), BAI Wei, XIE Meina, HE Jiyu(), YANG Rongjie   

  1. School of Materials Science and Engineering,Beijing Institute of Technology,Beijing 100081,China
  • Received:2024-06-28 Online:2025-04-26 Published:2025-04-23
  • Contact: HE Jiyu E-mail:13439970074@163.com;hejiyu@bit.edu.cn

摘要:

以钴层状双氢氧化物(Co⁃LDH)作为载体,原位构建了Co⁃LDH@ZIF⁃67复合结构,有效地改善了Co⁃LDH的低催化活性和低比表面积的缺陷。结果表明,与Co⁃LDH相比,Co⁃LDH@ZIF⁃67改性的环氧树脂(EP)复合材料在抑制热量、烟雾和有毒气体方面具有明显的优势。当Co⁃LDH@ZIF⁃67含量为2 %(质量分数,下同)时,复合材料的LOI值由24.5 %增加到28.2 %。并且与纯EP相比,EP/Co⁃LDH@ZIF⁃67复合材料的热释放速率峰值、总热释放以及总烟释放分别降低35.1 %、16.3 %和15.8 %。并且相对于Co⁃LDH具有更明显的阻燃和抑烟的能力。

关键词: 金属有机框架, 层状双层氢氧化物, 环氧树脂, 阻燃性能

Abstract:

In this study, Co⁃LDH@ZIF⁃67 composite structure was constructed in situ using Co⁃LDH as a carrier, which effectively improves the defects of low catalytic activity and low specific surface area of Co⁃LDH. The flame retardancy tests showed that the Co⁃LDH@ZIF⁃67 modified epoxy (EP) composites had significant advantages in suppressing heat, smoke, and toxic gases compared to Co⁃LDH. Specifically, the LOI value of the composites increased from 24.5 % to 28.2 % when Co⁃LDH@ZIF⁃67 was added at 2 wt%. The peak heat release rate, the total heat release, and the total smoke release of the EP/Co⁃LDH@ZIF⁃67 composites were reduced by 35.1 %, 16.3 %, and 15.8 %, respectively, compared with pure EP. And it has more obvious flame retardant and smoke suppression ability compared with Co⁃LDH.

Key words: metal-organic frameworks, layered double hydroxides, epoxy resin, flame retardancy

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