共查询到18条相似文献,搜索用时 203 毫秒
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<正> 近年来,我厂先后试制了氯磺化聚乙烯机车车辆线、氯磺化聚乙烯橡皮绝缘引接线以及氯磺化聚乙烯85℃级电焊机电缆。下面就氯磺化聚乙烯橡皮的加工工艺略谈我们的看法,不一定成熟。氯磺化聚乙烯橡皮在电线电缆行业中的应用为期不长。据我们对电机行业采用电机引接线的调查表明,电机行业采用氯磺化聚乙烯橡皮引接线的电机厂为数不多,而国外采用氯磺化聚乙烯作电缆的绝缘或护套却屡 相似文献
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<正> 为了确保船用电缆在一旦出现故障的情况下,能对各信号装置、水(油)泵、通风设施及其它系统正常输电,我们对电缆进行了模拟燃烧试验,研究了局部火焰对电缆的作用。为此,对橡皮绝缘氯丁护套φ0.3毫米钢丝编织电缆(型号为КНРП)、聚氯乙烯双护套铜丝屏蔽电缆(型号为КНРЭК)或φ0.3毫米钢丝编织电缆(型号为КНРП_К)、硅橡皮绝缘耐热聚氯乙烯双护套φ0.3毫米铜丝屏蔽电缆(型号为КСРВЭВ)等样品进行了耐燃试验。 相似文献
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橡塑合金橡胶阻燃护套料的研制 总被引:1,自引:0,他引:1
通过橡塑合金(NV5075)橡胶硫化体系、阻燃剂、补强剂、防老剂的确定,研制出了耐温等级达85°C、氧指数超过40的阻燃护套料,可用作船用电缆、煤矿阻燃电缆的护套。 相似文献
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在橡套软电缆的填充工艺中 ,通常的填充材料是采用护套橡皮、麻绳、橡皮条和聚丙烯索等 ,但填充效果及其经济性不理想 ,本文介绍用废胶料挤包细麻绳作填充条 ,其填充效果好 ,而且成本低 ,具有较高的经济效益 相似文献
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This paper provides information on the aging of URD power cable insulated with a tree-retardant crosslinked polyethylene (TR-XLPE) compound, installed in a typical utility environment, Numerous evaluations were performed on samples of power cables aged up to 7 years in-service. AC and impulse voltage breakdown data are compared with data for similar 35 kV ethylene propylene rubber (EPR) and crosslinked polyethylene (XLPE) insulated cables removed from the same utility system. The data show that, to date, the rate of degradation of TR-XLPE cables is less than that of the EPR and XLPE insulated cables. Extrapolation of the data, assuming the same rate, indicates TR-XLPE cable will have the longest life 相似文献
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炭黑填充型硅橡胶复合材料的制备及其性能研究 总被引:1,自引:0,他引:1
以硅橡胶为基体,T60导电炭黑为填料,制备了填充型硅橡胶复合材料。研究了炭黑填充量、硫化剂用量以及硫化时间对橡胶物理性能和导电性能的影响。结果表明:炭黑填充量、硫化剂用量以及硫化时间均会对橡胶的物理性能和导电性能产生影响。其中,炭黑填充量对橡胶的导电性能影响最为显著。当炭黑用量为20份,硫化剂用量为7份,硫化时间为11 min时,所得橡胶的物理和导电性能最佳,拉伸强度为5.67 MPa,扯断伸长率为133.1%,撕裂强度为16.9 kN/m,邵尔A硬度为81,体积电阻率为165Ω.cm。 相似文献
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Yukio Mizuno Yasuichi Mitsuyama Atsushi Minoda Masayuki Nagao Masamitsu Kosaki 《Electrical Engineering in Japan》1996,116(2):1-9
The authors have been developing extruded polymer insulated superconducting power cables. Dielectric loss in electrical insulation cannot be ignored in superconducting cables since conductor loss in the cables is minimal. Studies so far show that ethylene-propylene rubber (EPR) is suitable as an electrical insulating material in the extruded polymer insulated superconducting cable design because it demonstrates excellent mechanical and relatively good electrical qualities at a cryogenic temperature. Widely used EPR includes some kinds of additives; however, their effect on tan δ of EPR at cryogenic temperature remains unknown. The effect of additives such as crosslinking agent and fillers on tan δ of EPR was examined at temperatures of between 4.2 K and 300 K. Thickness dependence of tan δ was also measured using EPR films of different thickness and an extruded EPR insulated cable sample. The results show that additives increase tan δ of relatively thin films of EPR even in the cryogenic temperature region; however, they do not have an intolerable dielectric loss in comparison with conductor loss and heat inflow of the superconducting cable. The remedy to tan δ increase due to the polymer contraction relative to shielding wires has been established. 相似文献
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针对橡套电缆护套挤出时产生“粘模”现象进行分析 ,排除了挤出模具的次要影响因素 ,认定 ,护套材料配方中的碳酸钙的含水量和含碱量过高是引起“粘模”的主要因素。最后对原材料碳酸钙质量提出了新的要求 ,并严格控制和检验碳酸钙的质量 ,从而解决了这一问题。 相似文献