聚烯电缆绝缘材料的轻量化修改,添加了空心玻璃微球
Xindong Zhao1, Dongxu Luo1, Kai Wang1
1State Key Laboratory of High-Efficiency Special Cable Technology, Harbin University of Science and Technology, Harbin 150080, China.
Polymers
|December 31, 2025
概括
一种新的可回收聚烯复合材料与空心玻璃微球和SEBS提供了一个轻量级,强大的替代传统XLPE绝缘用于空中电力线路.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物工程 聚合物工程
- 电气工程 电气工程
背景情况:
- 交联聚乙烯 (XLPE) 是空中输电线路的标准绝缘材料.
- XLPE的生产是能源密集的,产生副产品,并导致回收能力差.
- XLPE的高密度增加了电缆的重量和 sag,减少了使用寿命.
研究的目的:
- 开发一种可回收和轻质的绝缘材料,作为XLPE的可持续替代品.
- 研究基于聚烯的复合材料在空中输电线路应用中的潜力.
主要方法:
- 合成了聚烯 (PP),空心玻璃微球 (HGM) 和化 styrene-ethylene-butylene-styrene 块共聚合物 (SEBS) 的三元复合系统.
- 密度,机械性质 (拉力强度,破裂时的延长) 和电气性质 (体积电阻,破裂强度,介电损耗,介电常数) 被评估.
主要成果:
- 与纯 PP 相比,PP/HGM/SEBS 复合物密度减少了 15% (0.757 g/cm3 与 0.890 g/cm3 相比).
- 拉力强度从14.94 MPa增加到32.40 MPa,并且随着SEBS的增加,断裂时的延伸率从72.02%增加到671.22%.
- 复合材料表现出优异的电绝缘性能:体积电阻为1.66 × 1012 Ω·m,断裂强度为108.6 kV/mm,介电损耗低 (2.76 × 10−4).
结论:
- PP/HGM/SEBS复合物实现了减重和增强机械性能的协同优化.
- 该材料的电绝缘性能适用于空中输电线路应用.
- 这种可回收复合材料为传统XLPE绝缘提供了一个有希望的,可持续的替代方案.
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