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Study on Performance of Moistened Irradiation Crosslinking Low-smoke Halogen-free and Flame-retardant Cable
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Guanghua SUN1, Xiufeng LI1, Jijiang SONG1, Yunzi DONG1, Peng ZHANG2
Insulating Materials | 2022, 55(8) : 76 - 81
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Insulating Materials | 2022, 55(8): 76-81
• Insulation Technology •
Study on Performance of Moistened Irradiation Crosslinking Low-smoke Halogen-free and Flame-retardant Cable
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Guanghua SUN1, Xiufeng LI1, Jijiang SONG1, Yunzi DONG1, Peng ZHANG2
Affiliations
  • 1College of Electric and Electronic Engineering, Shandong University of Technology, Zibo 255000, China
  • 2School of Electrical and Electronic Engineering, Zibo Vocational Institute, Zibo 255000, China
Published: 2022-08-20 doi: 10.16790/j.cnki.1009-9239.im.2022.08.013
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In order to study the performance changes of irradiation crosslinking low-smoke halogen-free flame-retardant insulation layer and sheath layer for photovoltaic cables before and after getting moistened, the insulation layer and sheath layer of photovoltaic cable with various water-immersion time were conducted mechanical properties, thermal extensibility, dynamic thermomechanical analysis (DMA), Fourier transform infrared spectroscopy (FTIR), and volume resistivity tests. The results show that the long-term water-immersion causes hydrolysis of molecular chains in the material, and the entanglement of molecular chains weakens, which lead to decrease of tensile properties of samples. After water-immersion, the initial storage modulus of the insulation layer and sheath layer samples decreases, the adhesion force between filler particles and matrix resin decreases, and the mechanical loss peak of the insulation layer presents double peaks characteristic. With the increase of moistening degree, the EVA in the polyolefin matrix swells, and the free volume increases. Some flame retardant fillers are separate from the binding of matrix and become impurity ions, making the carrier concentration and mobility increase, which leads to continuous decrease of volume resistivity.

photovoltaic cable  /  halogen-free flame-retardant  /  moistening  /  insulation layer  /  sheath layer
Guanghua SUN, Xiufeng LI, Jijiang SONG, Yunzi DONG, Peng ZHANG. Study on Performance of Moistened Irradiation Crosslinking Low-smoke Halogen-free and Flame-retardant Cable[J]. Insulating Materials, 2022 , 55 (8) : 76 -81 . DOI: 10.16790/j.cnki.1009-9239.im.2022.08.013
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2022.08.013
  • Receive Date：2021-09-04
  • Online Date：2025-12-23
  • Published：2022-08-20
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History
  • Received：2021-09-04
  • Revised：2021-11-02
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Affiliations
    1College of Electric and Electronic Engineering, Shandong University of Technology, Zibo 255000, China
    2School of Electrical and Electronic Engineering, Zibo Vocational Institute, Zibo 255000, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2022.08.013
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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