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牌号简介 About |
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Dow耐力HFDK-9253超高压是一种低密度、低垂度、交联聚乙烯,设计用于高压和超高压应用中的电力电缆绝缘,满足IEC 60840的要求。它具有以下重要优势。1。优异的热稳定性2。良好的挤压性能3。良好的热定型性能4。污染水平极低 DOW ENDURANCE™ HFDK-9253 EHV is a long-life, unfilled, crosslinkable, low density polyethylene insulation compound of extreme cleanliness developed especially for the insulation of power cables that employ high electrical stresses. DOW ENDURANCE HFDK-9253 EHV has been designed for cable production processes on horizontal vulcanization lines and for cables with thick insulation manufactured on standard catenary vulcanization lines. DOW ENDURANCE HFDK-9253 EHV has been designed with a non-migrating stabilizer providing high thermal stability, long term stability and optimum crosslinking behavior. It has an enhanced degree of scorch retardance for fine mesh filtering and long production run lengths during cable manufacture. DOW ENDURANCE HFDK-9253 EHV is recommended especially for the insulation of extra high voltage power transmission cables rated above 230 kV. Specifications Cables insulated with DOW ENDURANCE HFDK-9253 EHV, using sound commercial manufacturing practice, would be expected to meet the latest editions of the following specifications and regulations: IEC 62067 AEIC CS9 ANSI/ICEA: S-108-720 GB/T 22078 |
技术参数 Technical Data | |||
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物理性能 PHYSICAL |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
密度 Density |
0.920 | g/cm³ | ASTM D792 |
湿度 humidity |
< 200 | ppm | 内部方法 |
机械性能 MECHANICAL |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
拉伸强度 tensile strength |
20.0 | MPa | ASTM D638 |
拉伸应变 Tensile strain |
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断裂 fracture |
500 | % | ASTM D638 |
老化性能 Aging property |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
拉伸强度的变化率 Change in Tensile Strength |
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150℃,168 hr 150℃,168 hr |
< 25 | % | ASTM D638 |
热性能 THERMAL |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
热固性 thermosetting |
IEC 60811-2-1 | ||
负荷下:200℃ Under load: 200 ℃ |
% | IEC 60811-2-1 | |
无负荷伸长率:200℃ Elongation without load: 200 ℃ |
% | IEC 60811-2-1 | |
电气性能 ELECTRICAL |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
体积电阻率 Volume resistivity |
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23℃ 23℃ |
ohms·cm | ASTM D257 | |
介电强度 Dielectric strength |
ASTM D149 | ||
3.18 mm 3.18 mm 2 |
kV/mm | ASTM D149 | |
3.18 mm 3.18 mm 3 |
kV/mm | ASTM D149 | |
3.18 mm 3.18 mm 4 |
kV/mm | ASTM D149 | |
介电常数 Dielectric constant |
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23℃ 23℃ |
ASTM D150 | ||
耗散因数 Dissipation factor |
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23℃ 23℃ |
ASTM D150 |
备注 |
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1 一般属性:这些不能被视为规格。 |
2 0.2 MPa |
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古雷炼化乙烯项目管道试压高效推进
2021-02-20 搜料网资讯: 连日来,炼化工程十建公司承建的古雷炼化一体化项目80万吨/年乙烯装置管道试压高效推进,为乙烯装置设备试车创造有利条件。 据了解,春节期间十建公司古雷炼化乙烯 |
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