Preparation and properties of flame-retardant rigid polyurethane foam composite based on copper tailings/ammonium polyphosphate

被引：0

作者：

Liu, Xiuyu ^{[1
]}

Wang, Guodong ^{[1
]}

Du, Yida ^{[1
]}

Wang, Xueqing ^{[1
]}

Wu, Shenghua ^{[2
]}

Dai, Kang ^{[3
]}

Guan, Mengfan ^{[1
]}

Tang, Gang ^{[1
]}

机构：

[1] School of Civil Engineering and Architecture, Anhui University of Technology, Maanshan

[2] Department of Scientific Research, Anhui University of Technology, Maanshan

[3] School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou

来源：

Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals | 2025年 / 35卷 / 02期

基金：

中国国家自然科学基金;

关键词：

ammonium polyphosphate; copper tailings; flame retardant; rigid polyurethane foam;

D O I：

10.11817/j.ysxb.1004.0609.2024-45163

中图分类号：

学科分类号：

摘要：

Ammonium polyphohate (APP) was modified by acid hydrolysis supernatant of copper tailings (CTS) through cation substitution, and modified APP(APP-M) was prepared, which was mixed with copper tailings and added to rigid polyurethane foam (RPUF) to fabricate the rigid polyurethane foam/copper tailings/modified ammonium polyphosphate (RPUF/CTS/APP-M) composite. Scanning electron microscopy (SEM), thermogravimetric infrared analysis (TG-FTIR), limiting oxygen index (LOI), vertical combustion (UL-94), cone calorimetry (CCT), Raman spectroscopy, and thermal conductivity of the composite were tested and characterized to systematically study the physical properties of the composite. The vapor-condensed phase synergistic flame retardant mechanism of RPUF/CTS/APP-M composites was proposed. The results show that the LOI value of RPUF-1 reaches 24.3% (volume fraction), there is no melting dripping during combustion, the vertical combustion test of UL-94 reaches V-0 grade, and the flame retardancy of RPUF/CTS/APP-M composite is significantly improved. Compared with pure sample, the pHRR and THR of RPUF-5 decrease the most, which are 234.4 kW/m2 and 23.3 MJ/m2, respectively. Compared with pure RPUF, the pHRR and THR decrease by 22.0% and 41.8%, respectively, and the fire safety performance of RPUF/CTS/APP-M composite is improved. The highly graphitized dense carbon layer is formed in the combustion process of RPUF/CTS/APP-M composites, and the flame retardant properties of RPUF composites are effectively improved by the synergistic flame retardant of APP-M and CTS through the gas-condensed phase. This study provides a new idea for the high value utilization of copper tailings and the development of flame retardant RPUF composites. © 2025 Central South University. All rights reserved.

引用

页码：654 / 670

页数：16

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