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为 提 高 架 空 绝 缘 导 线 用 耐 候 型 硅 烷 交 联 聚 乙 烯(SXLPE)的 阻 燃 性 能 ,采 用 三 氧 化 二 锑(Sb2O3)/十溴二苯乙烷(DBDPE)/硼酸锌(ZB)对 SXLPE 电缆料进行改性。研究了 Sb2O3/DBDPE质量分数对 SXLPE 电缆料力学性能、电气性能、阻燃性能和热稳定性的影响。结果表明,阻燃料质量分数为 46% 时,复合材料拉伸强度可达 18.4 MPa,断裂伸长率为 456%,体积电阻率为 1.8×1014 Ω·m,极限氧指数为 28.5%,达到 UL94 标准 V0 级,热释放速率峰值(PHRR)为 534.01 kW/m2,总热释放量(THR)为 18.7 MJ/m2,总产烟量(TSP)为 11.7 m2,样品燃烧后残炭的 SEM 图显示表面已经基本无法找到孔洞,形成的炭层非常致密,复合材料力学、电气及阻燃性能均达到使用要求。
Abstract:In order to improve the flame retardancy of weather resistant silane cross-linked polyethylene (SXLPE) for overhead insulated conductors, the SXLPE cable material is modified with antimony trioxide (Sb2O3)/decabromodiphenyl ethane(DBDPE)/zinc borate (ZB). The influence of the mass fraction of Sb2O3/DBDPE on the mechanical properties, electrical properties, flame retardancy and thermal stability of SXLPE cable materials is studied. The results show that when the mass fraction of Sb2O3/DBDPE is 46%, the tensile strength of the composite material reaches 18.4 MPa, the elongation at break reaches 456%, the volume resistivity reaches 1.8×1014 Ω·m, theultimate oxygen index is 28.5%, reaching the UL-94 standard V-0 level, the peak heat release rate (PHRR) is 534.01 kW/m2, the total heat release (THR) is 18.7 MJ/m2, and the total smoke production (TSP) is 11.7 m2. Furthermore, the SEM images of the residual carbon after combustion of the sample show that almost no pores can be found on the surface, and the formed carbon layer is very dense. The mechanical, electrical, and flame retardant properties of the composite material all meet the requirements for use.
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基本信息:
DOI:10.3969/j.issn.2097-017X.2026.05.009
引用信息:
[1]陈家慧,彭倩,周锋,等.溴锑⁃硼酸锌协同阻燃在架空绝缘导线电缆料中的应用[J],2026,(05):87-93.DOI:10.3969/j.issn.2097-017X.2026.05.009.
基金信息:
国网四川省电力公司科技项目(521997230030)
2026-04-01
2026
2026-09-15