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220 kV复合绝缘子伞裙脱落断裂故障原因分析

Dianci bileiqi
针对某220 kV线路新投运复合绝缘子伞裙脱落断裂、硅橡胶材质分界缝隙与色泽分层问题，本文选取故障与正常样品，在常规断裂拉伸、热失重、扫描电镜等检测基础上，结合TGA-DSC联测、工业CT扫描、纳米压痕等新技术，开展了材料力学性能、材料组分与交联密度、微观形貌等方面的对比分析。力学性能分析表明，断裂伞裙拉伸强度、拉断伸长率不满足标准要求，硅橡胶分布、局部力学强度均匀性差；工业CT扫描发现芯棒内部、芯棒-护套处存在较多气隙，为出厂缺陷；热失重分析发现断裂部位PDMS含量显著下降且不均匀，属工艺不良问题 ...
高超, 张立雄, 毛磊, 张军广, 李黎, 罗康, 王大森   +6 more
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[Research progress on the mechanism of mitochondrial dynamics in diabetic foot ulcers and its related intervention strategies]. [PDF]

Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi
Shan B, Guo ZA, Ma XP, Jing SS, Wu Y, Pan HB, Zeng ZY.   +6 more
europepmc   +1 more source

[Study on electrospun film-covered tracheal stents with adaptive release of anti-inflammatory drugs driven by the piezoelectric effect]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Wang Z, Zhao F, Dai B, Wang F, Du T, Qiao A, Zhang Y.   +6 more
europepmc   +1 more source

[Impact of unplanned surgery on prognosis of myxoid liposarcoma and analysis of salvage treatment strategies]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Qu G, Hou J, Su Q, Zhang C, Wang J, Wang X, Zhang P, Niu X, Yao W.   +8 more
europepmc   +1 more source

[Interpretation of National Comprehensive Cancer Network (NCCN) Clinical Practice Guidelines in Bone Cancer (Version 2.2026): Updates in diagnosis and treatment strategies for giant cell tumor of bone, osteosarcoma, and Ewing sarcoma]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Li R, He M, Zheng J, Wang Z, Fang B.
europepmc   +1 more source

[Establishment of rabbit model of benign circumferential esophageal stricture]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Meng L, Huang Y, Yan X, Wang Y.
europepmc   +1 more source

[Guangdong consensus on integrated Chinese and Western medicine management of prolonged disorders of consciousness]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Neurocritical Care Committee of Guangdong Provincial Association of Chinese Medicine.
europepmc   +1 more source

[Exploration and application of nanotechnology in precision transarterial chemoembolization for hepatocellular carcinoma]. [PDF]

Zhonghua Gan Zang Bing Za Zhi
Kong JQ, Li R, Zuo RN, Zhang X, Ding ZH, Dai Y.   +5 more
europepmc   +1 more source

[Electric-field modeling, simulation, and experimental analysis of multi-target temporal interference transcranial alternating current stimulation]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Wang T, Cui C, Wei Y, Ji X, Xu G.
europepmc   +1 more source

[Progress and future prospects of robot-assisted total hip arthroplasty]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Cai L, Gui Y, Kong X, Chai W.
europepmc   +1 more source