Enhancing the flame retardancy and UV resistance of polyamide 6 by introducing ternary supramolecular aggregates

被引：29

作者：

Li, Yuchun ^{[1
,2
]}

Wang, Jinzhao ^{[2
]}

Xue, Boqiong ^{[2
]}

Wang, Shuheng ^{[1
,2
]}

Qi, Peng ^{[1
,2
]}

Sun, Jun ^{[1
,2
]}

Li, Hongfei ^{[2
]}

Gu, Xiaoyu ^{[1
,2
]}

Zhang, Sheng ^{[1
,2
]}

机构：

[1] Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China

[2] Beijing Univ Chem Technol, Key Lab Carbon Fiber & Funct Polymers, Minist Educ, Beijing 100029, Peoples R China

来源：

CHEMOSPHERE | 2022年 / 287卷

基金：

中国国家自然科学基金;

关键词：

Polyamide; 6; Mechanical properties; Fire safety; Anti-aging; COMPOSITES;

D O I：

10.1016/j.chemosphere.2021.132100

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

An integrated multi-functional additive was fabricated by successively grafting melamine (MEL) and phytic acid (PhA) on multiwalled carbon-nanotubes (MWNCTs), and was then applied in PA6 to improve the flame retardancy and light aging resistance of the composite. The limit oxygen index of PA6 composite containing 7 wt % PhA-MEL-MWCNTs was increased to 26.4 from 21.0. The smoke and CO release were significantly reduced by 48% and 88% respectively, and the severe melt dripping of PA6 in burning was eliminated. It is proved that PhAMEL-MWCNTs can absorb ultraviolet (UV) radiation, and hence significantly reduces the mechanical property loss of the PA6 composite after UV aging. The tensile strength of the aged PA6/7 wt%PhA-MEL-MWCNTs composite sample only decreased by 18.1%, which was significantly lower than the loss rate of the control aged PA6 sample (62.5%). This protocol provides a new opportunity for fabricating long-life flame retardant poly amide composites.

引用

页数：10

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