An efficient strategy triggered crosslinking of polyethylene and its application in degassing-free ultrahigh voltage power cables

被引：4
作者：
Sun, Wu-Ji [1 ,2 ,3 ]
Liu, Xiong-Jun [1 ]
Yuan, Li-Juan [1 ]
Xiao, Han [1 ]
Lu, Jian-Mei [2 ,3 ]
机构：
[1] Jiangsu Shangshang Cable Grp, Res Inst Rubber & Plast Mat Sci & Technol, Changzhou, Peoples R China
[2] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Collaborat Innovat Ctr Suzhou Nano Sci & Technol, Natl United Engn Lab Functionalized Environm Adsor, Suzhou, Peoples R China
[3] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Collaborat Innovat Ctr Suzhou Nano Sci & Technol, Natl United Engn Lab Functionalized Environm Adsor, Suzhou 215123, Peoples R China
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 2023年 / 140卷 / 20期
基金：
中国国家自然科学基金;
关键词：
crosslinked polyethylene; degassing-free; finite element analysis; ultrahigh voltage; LOW-DENSITY POLYETHYLENE; MOLECULAR-WEIGHT POLYETHYLENE; LINKED LOW-DENSITY; PHYSICAL-PROPERTIES; THERMAL-PROPERTIES; PEROXIDE; BEHAVIOR; MELT;
D O I：
10.1002/app.53844
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Polyethylene has excellent electrical insulation, but its low thermal stability and breakdown strength limit its application in the field of high-voltage (HV) and ultrahigh voltage (UHV) power cables. In this work, we have developed a new organic peroxide, 2,5-dimethyl-2,5-di(tert-butylperoxy) hexane (Bi25), which can efficiently trigger the crosslinking of polyethylene (Bi25-XLPE). Bi25-XLPE does not produce gas byproducts and has a longer scorching time. All performance of Bi25-XLPE sheets fulfill the standard of the 500 kV power cable insulation due to the void-free nature, higher crosslinking density and crystallinity. In addition, one 500 kV power cable model was constructed by COMSOL, which confirmed the breakdown strength (up to 61.66 kV/mm) and stability of Bi25-XLPE.
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页数：9
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