Meng Xiaokai, Yu Hua, Lu Zhumao, Jin Tao
State Grid Shanxi Electric Power Research Institute, Taiyuan 030001, China.
Polymers (Basel). 2024 May 19;16(10):1435. doi: 10.3390/polym16101435.
With the progress of the power grid system, the coverage area of cables is widening, and the problem of cable faults is gradually coming to affect people's daily lives. While the vast majority of cable faults are caused by the ablation of the cable buffer layer, polypropylene (PP), as a common cable buffer material, has pyrolysis properties that critically impact cable faults. Studying the semiconductive buffer layer of polypropylene (PP) and its pyrolysis properties allows us to obtain a clearer picture of the pyrolysis products formed during PP ablation. This understanding aids in the accurate diagnosis of cable faults and the identification of ablation events. In this study, the effects of temperature and catalyst (H-Zeolite Standard Oil Corporation Of New York (Socony) Mobil-Five (HZSM-5)) content on the PP thermolysis product distribution were studied by using an online tubular pyrolysis furnace-mass spectrometry (MS) experimental platform. The results showed that PP/40% HZSM-5 presented the highest thermolytic efficiency and relative yield of the main products at 400 °C.
随着电网系统的发展，电缆的覆盖面积不断扩大，电缆故障问题逐渐开始影响人们的日常生活。虽然绝大多数电缆故障是由电缆缓冲层的烧蚀引起的，但聚丙烯（PP）作为一种常见的电缆缓冲材料，具有热解特性，对电缆故障有至关重要的影响。研究聚丙烯（PP）的半导电缓冲层及其热解特性，能让我们更清楚地了解PP烧蚀过程中形成的热解产物。这种认识有助于准确诊断电缆故障并识别烧蚀事件。在本研究中，通过在线管式热解炉-质谱（MS）实验平台，研究了温度和催化剂（纽约标准石油公司（Socony）美孚五号（HZSM-5））含量对PP热解产物分布的影响。结果表明，PP/40% HZSM-5在400℃时呈现出最高的热解效率和主要产物的相对产率。
