Double-layer ceramic insulating non-toxic irradiation-free electric wire and manufacturing method thereof
A radiation-free, ceramic technology, applied in the direction of insulated cables, insulators, insulated conductors, etc., can solve the problems of lengthy and complicated production process, lack of long-term high temperature resistance, and great influence of human factors, etc., to achieve strong tensile resistance Improvement of performance and fire performance, and improvement of anti-interference ability
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Embodiment 1
[0026] according to figure 1 , figure 2 , a double-layer ceramic insulated non-toxic radiation-free wire, including one or more metal cores 1, each of the metal cores 1 is uniformly wrapped with an inner skin 2, and also includes a wire for wrapping all the inner skins 2 and the outer skin 3 of the metal core 1, wherein: the inner skin 2 is composed of a first ceramic layer 4 coated on the outside of the metal core 1, and a first insulation layer coated on the outside of the first ceramic layer 4 The radiation layer 6 is formed; the outer skin 3 is composed of a second ceramic layer 5 and a second radiation-free layer 7 sequentially provided from the inside to the outside.
[0027] The first radiation-free layer 6 is made of the following materials by weight: 40-80 parts of polypropylene resin, 12-15 parts of modified hydrotalcite, 8-16 parts of heat stabilizer, and 40-60 parts of plasticizer , 4-8 parts of modified auxiliary agent, 2-4 parts of flame retardant, 0.5-1 part ...
Embodiment 2
[0030] The first ceramic layer 4 is composed of ceramic fiber filaments tightly wound outside the metal core 1 to form a thickness; the second ceramic layer 5 is composed of ceramic fiber tapes spirally wound outside the inner skin 2 .
[0031] In the above arrangement, the helically wound ceramic fiber tape not only ensures the wire-making efficiency of the sheath 3, but also increases the degree of saturation of the second ceramic layer 5, thus improving the fireproof performance.
Embodiment 3
[0033] The inner skin 2 is nested with a metal shielding net 8 between the inner walls of the second ceramic layer 5; inside the metal shielding net 8, a plurality of tension bands 9 are arranged along the length direction.
[0034] In the above configuration, the metal shielding net 8 improves the anti-interference ability of the cable, and at the same time, the metal shielding net 8 and the tensile tape 9 provide the cable with strong tensile resistance and avoid breakage due to external force.
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