Development of Security Cables with High Conductive Carbon Material for Fence

To address prevalent issues of insufficient tensile strength and poor weather resistance in current electric fence cables, a novel security cable utilizing high conductive carbon material was developed. The design of a three-layer composite structure, consisting of tension member, conductive layer, and outer sheath, along with raw material formulation system and manufacturing process, was elaborated in detail. Synergistic mechanism of component materials and the influence of key process parameters on properties of final product were thoroughly analyzed, and systematic tests were conducted on core performance indicators of the cable. Results indicated that, compared with traditional similar cables in the market, the developed cable possessed the following advantages: average tensile strength was recorded at 10.2~10.8 kN, which represented an increase of approximately 35% at least compared to similar products; bending resistance was outstanding, and under the condition of a bending radius of 8 times the cable diameter, change rate in resistance was found to be less than 0.8% after bending cycles of 1000 at different frequencies, which was lower than similar products (1.5%~3.5%); normal operation was maintained after forward and reverse cyclic bending cycles of 3000, whereas significant performance degradation was observed in similar products; low-temperature adaptability was extremely strong, as no cracking was observed after the cable was placed in the environment of –50 ℃ for 72 h, and tensile strength retention rate at –40 ℃ reached over 292%, exceeding similar products (150%~200%); and service life was extended by more than 50% compared with traditional cables. It was concluded that practical application requirements for electric fences in scenarios such as livestock farms and farms could be satisfied by the developed cable.