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Updated: Jun 9, 2025

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Published on: February 6, 2016

层次的纳米/微阵列结构的CuMgAl-LDH/rGO混合体,显著提高了柔性聚乙烯化物的阻燃性和烟雾抑制性能

Zixuan Zhang¹, Yuyang Chen¹, Defu Wang¹

¹State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Box 98, Beijing 100029, China.

ACS applied materials & interfaces

|October 29, 2024

概括

这项研究开发了一种新的CuMgAl-LDH/rGO混合材料,以提高阻燃性和减少聚合物复合材料中的烟雾. 这种新材料显著提高了聚乙烯 (PVC) 纳米复合材料的安全性能.

科学领域:

材料科学材料科学材料科学
聚合物化学聚合物化学
纳米技术纳米技术

背景情况:

聚合物纳米复合材料往往需要增强的阻燃性和烟雾抑制安全应用.
层状双氧化物 (LDHs) 和减少的氧化石墨烯 (rGO) 已知其在改善材料性能方面的潜力.

研究的目的:

为了创建一个层次的纳米/微阵列结构的CuMgAl-LDH/rGO混合.
研究这种混合物在增强聚合物纳米复合材料,特别是聚乙烯 (PVC) 的阻燃性和烟雾抑制方面的有效性.

主要方法:

合成了一个CuMgAl-LDH/rGO混合体,具有特定的纳米/微阵列结构.
将混合物纳入PVC中,形成G-CuMgAl/PVC纳米复合材料.
使用限制氧指数 (LOI) 和UL-94测试评估的阻燃性.
通过测量峰值热释放率 (PHRR),总热释放率 (THR),最大平均热释放率 (MARHE),峰值烟雾产量 (PSPR),总烟雾产量 (TSP) 和平均有效燃烧热量 (av-EHC) 来评估烟雾抑制特性.

主要成果:

该G-CuMgAl/PVC复合物获得了35.8%的LOI (比原始PVC增加6.4%) 和UL-94 V-0评级.
与原始PVC相比,PHRR (-40.2%),THR (-24.3%),MARHE (-41.6%),PSPR (-37.8%),TSP (-31.3%) 和av-EHC (-15.2%) 的显著降低被观察到.
增强的特性归因于纳米/微结构内的协同作用,阻碍了热量,质量和O2传输,并在凝结阶段创建了一个曲折的路径.

结论:

CuMgAl-LDH和rGO的合理整合创造了一个高效的混合物,用于改善聚合物纳米复合材料中的阻燃性和烟雾抑制.
层次的纳米/微阵列结构在协同阻燃剂和烟雾抑制机制中起着至关重要的作用.
这种方法为设计先进的LDH/rGO混合体提供了一种新的策略,可以广泛应用于提高各种聚合物材料的安全性.

关键词:

火焰阻燃性和烟雾抑制能力灵活的PVC可以灵活的PVC.有层的双氧化.纳米/微型架构的设计有协同效应的效应.

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