Application of gas chromatography technology in ablative defect detection of cable buffer layer

In recent years, the ablative defect of cable buffer layer is easy to cause the breakdown of cable body, which causes great influence. It is difficult to detect the ablative defect of cable buffer layer by gas chromatography. In this paper, the formation of ablative defect is reproduced through the simulation test, and the characteristic gas in the process of defect formation is collected and analyzed, which demonstrates the effectiveness of the gas chromatography detection technology proposed. The results show that methane (CH4), ethylene (C2H4), ethane (C2H6), acetylene (C2H2), hydrogen (H2), carbon monoxide (CO) and carbon dioxide (CO2) will be produced during the ablation process.