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

›› 2025, Vol. 39 ›› Issue (5): 31-36.

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¹,白伟¹,谢美娜¹,何吉宇¹,杨荣杰²,³

1. 北京理工大学材料学院
2. 北京理工大学材料学院，国家阻燃材料工程技术研究中心
3. 北京理工大学，中原阻燃材料研究中心

收稿日期:2024-06-28 修回日期:2024-07-07 出版日期:2025-04-26 发布日期:2025-04-26

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

Received:2024-06-28 Revised:2024-07-07 Online:2025-04-26 Published:2025-04-26

摘要/Abstract

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 retardant

宋昆朋白伟谢美娜何吉宇杨荣杰. 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[J]. , 2025, 39(5): 31-36.

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