摘要
本文成功合成一种用于高密度聚乙烯(HDPE)材料的复合阻燃改性剂,以期将改性复合材料应用于煤矿智慧园区电缆保护系统。通过添加聚磷酸铵/木脂素作为阻燃剂,并辅以抗氧化剂1010作为保护材料,制备含不同阻燃剂配方的改性HDPE试样。结果表明,添加30%聚磷酸铵/木脂素后的改性HDPE的极限氧指数从16.6%提高至28.8%,达到UL-94可燃性测试的V-0级;改性HDPE的总热释放量和峰值热释放速率分别从111.6 MJ/m^(2)和463.0 kW/m^(2)降低至85.0 MJ/m^(2)和172.0 kW/m^(2),阻燃性能得到提高;改性HDPE的烟雾释放率和总烟雾释放量有所降低,具有更好的抑烟效果;改性HDPE的初始分解温度从308.1℃提高至463.2℃,且在800℃下的残留率从9.38%增至16.51%,热稳定性增强。各改性HDPE的阻燃性能、力学性能和电气性能均表现卓越,其中H70L7.5在阻燃性能与力学、电气性能之间取得了良好的平衡,综合性能最佳。
This paper synthesized a composite flame retardant modifier for high density polyethylene(HDPE)materials,aiming to apply the modified composite material to cable protection systems in smart coal mine parks.Modified HDPE samples with different flame retardant formulations were prepared by adding ammonium polyphosphate/lignan as the flame retardant and antioxidant 1010 as the protective material.The results show that the limit oxygen index of modified HDPE with 30%ammonium polyphosphate/lignin increases from 16.6%to 28.8%,reaching the V-0 level in UL-94 flammability tests.The total heat release and peak heat release rate of modified HDPE decreases from 111.6 MJ/m^(2) and 463.0 kW/m^(2) to 85.0 MJ/m^(2) and 172.0 kW/m^(2),respectively,indicating an improvement in flame retardancy.The smoke release rate and total smoke release of modified HDPE decrease,indicating better smoke suppression effect.The initial decomposition temperature of modified HDPE increases from 308.1℃to 463.2℃,and the residual rate at 800℃increases from 9.38%to 16.51%,indicating an improvement in thermal stability.All the modified HDPE exhibit excellent flame retardancy,mechanical properties,and electrical properties,among them,H70L7.5 achieves a good balance between flame retardancy and mechanical and electrical properties,showing the best comprehensive performance.
作者
杨芬
严文超
陈庆
陈邵杰
YANG Fen;YAN Wenchao;CHEN Qing;CHEN Shaojie(Hubei Three Gorges Polytechnic,Yichang 443000,China;China Three Gorges University,Yichang 443002,China;Shenzhen Institutes of Advanced Technology,Chinese Academy of Sciences,Shenzhen 518055,China)
出处
《绝缘材料》
北大核心
2025年第12期65-73,共9页
Insulating Materials
基金
2021年湖北省教育厅“百校联百县”科研项目(BXLBX1342)。
关键词
改性高密度聚乙烯
电缆保护
阻燃剂
锥形量热试验
热重分析
modified high density polyethylene
cable protection
flame retardant
cone calorimetry test
thermogravimetric analysis
