Synergistic Flame-retardant Effect of Sulfonated Carbon Black and Hexaphenoxycyclotriphosphazene on Polycarbonate

YE Xiao-di; ZHAN Cheng; SAI Ting; WANG Bing-tao; ZHANG Cheng-feng; LI Juan; GUO Zheng-hong

doi:10.14028/j.cnki.1003-3726.2025.25.201

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Synergistic Flame-retardant Effect of Sulfonated Carbon Black and Hexaphenoxycyclotriphosphazene on Polycarbonate

更新时间：2025-12-05

- Synergistic Flame-retardant Effect of Sulfonated Carbon Black and Hexaphenoxycyclotriphosphazene on Polycarbonate
- Polymer Bulletin Vol. 38, Issue 12, Pages: 1846-1855(2025)
- 作者机构：
  
  1.浙江理工大学材料科学与工程学院，杭州 310018
  2.浙大宁波理工学院材料科学与工程学院，宁波 315100
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2025.25.201
  CLC：
- Received：18 July 2025，
  
  Accepted：10 September 2025，
  
  Published Online：09 October 2025，
  
  Published：20 December 2025
- 稿件说明：
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叶小迪, 占诚, 赛霆, 王炳涛, 张成峰, 李娟, 郭正虹. 磺化炭黑与六苯氧基环三磷腈协同阻燃聚碳酸酯. 高分子通报, 2025, 38(12), 1846–1855.

Ye, X. D.; Zhan, C.; Sai, T.; Wang, B. T.; Zhang, C. F.; Li, J.; Guo, Z. H. Synergistic flame-retardant effect of sulfonated carbon black and hexaphenoxycyclotriphosphazene on polycarbonate. Polym. Bull. (in Chinese), 2025, 38(12), 1846–1855.
叶小迪, 占诚, 赛霆, 王炳涛, 张成峰, 李娟, 郭正虹. 磺化炭黑与六苯氧基环三磷腈协同阻燃聚碳酸酯. 高分子通报, 2025, 38(12), 1846–1855. DOI： 10.14028/j.cnki.1003-3726.2025.25.201.

Ye, X. D.; Zhan, C.; Sai, T.; Wang, B. T.; Zhang, C. F.; Li, J.; Guo, Z. H. Synergistic flame-retardant effect of sulfonated carbon black and hexaphenoxycyclotriphosphazene on polycarbonate. Polym. Bull. (in Chinese), 2025, 38(12), 1846–1855. DOI： 10.14028/j.cnki.1003-3726.2025.25.201.

摘要

探究了磺化炭黑(CBSP)与六苯氧基环三磷腈(HPCTP)对聚碳酸酯(PC)的协同阻燃作用。采用极限氧指数(LOI)、UL-94垂直燃烧、锥形量热测试、热重分析和紫外可见光谱等方法，表征分析了CBSP/HPCTP复配体系对PC阻燃性能、热稳定性、力学性能和紫外屏蔽性能的影响。采用扫描电子显微镜、X射线光电子能谱、拉曼光谱以及热重-红外联用测试等手段，分析并揭示了CBSP/HPCTP复配体系在PC材料中的阻燃机制。实验结果表明，CBSP与HPCTP在PC中具有正向协同阻燃效果。当0.5 wt% CBSP与3.5 wt% HPCTP复配时，PC的LOI值从24.6%提升至31.5%，并达到UL-94 V-0等级。与纯PC相比，PC/0.5CBSP/3.5HPCTP的热释放峰值、总热释放量和总烟释放量分别降低了50.2%、27.0%和26.2%。CBSP/HPCTP的加入使PC的缺口冲击强度和断裂伸长率有所降低，但显著增强了材料的紫外屏蔽性能。本研究为开发高性能PC材料提供了新思路，拓展了PC在高火安全需求领域的应用。

Abstract

In order to satisfy the practical needs of high-performance PC composites

a combined system of sulfonated carbon black (CBSP) and hexaphenoxycyclotriphosphazene (HPCTP) was proposed to increase the flame retardancy of polycarbonate (PC). The comprehensive performance of the PC/CBSP/HPCTP composites was characterized using the limiting oxygen index (LOI)

UL-94 vertical burning test

cone calorimetry test

thermogravimetric analysis

and UV-visible spectroscopy. A flame-retardant mechanism was proposed by analyzing the results of scanning electron microscopy

X-ray photoelectron spectroscopy

Raman spectroscopy

and thermogravimetric-infrared tests. CBSP and HPCTP exhibited a good synergistic flame-retardant effect. The addition of 0.5 wt% CBSP and 3.5 wt% HPCTP increases the LOI value from 24.6% for pure PC to 31.5% with a UL-94 V-0 classification. The peak heat release

total heat release

and total smoke release of PC/0.5CBSP/3.5HPCTP were lower than those of pure PC by 50.2%

27.0%

and 26.2%

respectively. The superior fire retardancy can be attributed to the synergistic flame-retardant effect of CBSP and HPCTP

which promotes the formation of denser and more resilient char layers. Meanwhile

CBSP/HPCTP reduces the notched impact strength and elongation at break of PC but significantly enhances its UV-shielding capacity. This work provides a feasible strategy for fabricating fire-retardant PC composites with superior UV-shielding properties

which is expected to expand their industrial applicability.

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Keywords

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