Effect of Thermal Aging on Voltage Stabilizers To Enhance Electrical Properties of Silicone Rubber - Details

author：

Zhu, Xiaoqian (Zhu, Xiaoqian.) ^[1] | Zhou, Yuanxiang (Zhou, Yuanxiang.) ^[2] | Zhang, Yunxiao (Zhang, Yunxiao.) ^[3] (Scholars：张云霄) | Huang, Xin (Huang, Xin.) ^[4]

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Abstract：

To　further　explore　the　long-term　influence　of　voltage　stabilizers　on　silicone　rubber　(SiR),　the　electrical　properties　of　unmodified　SiR　and　SiR　modified　by　two　types　of　voltage　stabilizers　with　high　electron　affinity　were　investigated　after　thermal　aging.　In　this　paper,　three　different　kinds　of　SiR　were　thermally　aged　for　0,　40,　and　80　days　at　120°C.　Then　the　characterization　and　electrical　properties　measurements　were　carried　out.　The　results　showed　that　the　breakdown　strength　of　SiR　modified　by　voltage　stabilizers　after　aging　was　still　significantly　higher　than　that　of　the　unmodified　SiR　and　that　the　conductivity　of　modified　SiR　reduced　slightly　at　all　aging　stages.　In　addition,　the　space　charge　characteristics　of　the　modified　SiR　also　improved　after　aging.　There　were　two　main　reasons.　First,　the　cross-linked　degree　of　SiR　increased　during　the　aging　process.　Second,　the　voltage　stabilizers　with　high　electron　affinity　migrated　during　the　aging　process　and　slowed　down　the　thermal　aging　process　of　the　SiR.　©　2022　IEEE.

Keyword：

Electron affinity Silicone rubber Thermal aging

Community：

[ 1 ] [Zhu, Xiaoqian]Tsinghua University, State Key Laboratory of Power System and Generation Equipment, Department of Electrical Engineering, Beijing; 100084, China
[ 2 ] [Zhou, Yuanxiang]Tsinghua University, State Key Laboratory of Power System and Generation Equipment, Department of Electrical Engineering, Beijing; 100084, China
[ 3 ] [Zhang, Yunxiao]College of Electrical Engineering and Automation, Fuzhou University, Fujian, Fuzhou; 350108, China
[ 4 ] [Huang, Xin]Tsinghua University, State Key Laboratory of Power System and Generation Equipment, Department of Electrical Engineering, Beijing; 100084, China