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普通塑料通信电缆由于存在透潮问题,其发展速度和使用范围受到了限制。因此,解决塑料电缆的透潮问题,成了研究的中心课题。 1963年英国人G·A多德提出了全填充电缆的理论,即在缆芯及包带层的空隙处采用亲水或增水的物质充分填满(例如石油膏混合物,粉末或纤维素等),形成纵向密封堵水层,保证即便是电缆外护层受到损伤,水也无法进入缆芯。因此,只要绝缘芯线未受损坏,就仍能维
Ordinary plastic communications cables due to the presence of moisture problems, the development speed and scope of use has been limited. Therefore, to solve the problem of moisture permeability of plastic cables has become a research center. In 1963 British G · A Dodd proposed fully filled cable theory, that is, in the core and the tape layer of the gap with hydrophilic or water-filled material is fully filled (such as a mixture of ointment, powder or cellulose, etc. ), The formation of longitudinal sealing water layer, to ensure that even if the outer sheath of the cable is damaged, the water can not enter the core. Therefore, as long as the insulated core is undamaged, it can still be dimensioned