High flame retarding radio frequency cable and manufacturing method

Abstract

The invention relates to a high flame retarding radio frequency cable and a manufacturing method. A center of a cross section of a polygonal polyethylene framework type half air insulating layer is a tubular body; a plurality of convex ribs are arranged on the outer wall of the tubular body; a conductor inside a copper-clad aluminum conductor is arranged inside a pipe core of the tubular body of the polygonal polyethylene framework type half air insulating layer; and a wrinkled copper pipe outer conductor and an extruded layer PVDF (Polyvinylidene Fluoride) jacket are sequentially arranged on the convex ribs of the polygonal polyethylene framework type half air insulating layer. The manufacturing method comprises the following steps of: 1, manufacturing an insulating manner, 2, machining an outer conductor, and 3, machining a jacket. The high flame retarding radio frequency cable and the manufacturing method provided by the invention have the characterized in that the entire weight of the cable is reduced; and the cost is reduced. Compared with strip type half air insulation, a machining process is reduced by using the polygonal polyethylene framework type half air insulating layer; and the insulating layer can be manufactured by forming a single polyethylene insulation material in one step. With the adoption of the PVDF jacket, the fire retardance level of the cable reaches the highest CMP (Corrugated Metal Pipe) fire retarding level of the UL (Underwriter Laboratories Inc).

Description

technical field [0001] The invention relates to a high flame-retardant radio frequency cable and a manufacturing method thereof, which are widely used in mobile communication systems, especially places with high requirements for flame retardancy and fire resistance. Background technique [0002] At present, most of the mobile communication radio frequency coaxial cables commonly used in our country are tape winding and physical foaming polyethylene insulation layer, ordinary sheath and flame retardant sheath. There are many tape winding processes and poor structural stability; physical foamed polyethylene insulation is limited by the processing technology, and the degree of foaming cannot be too high, so the signal attenuation is large, and the insulation will deform when the temperature is high. Contents of the invention [0003] In view of the deficiencies in the prior art, the invention provides a high flame-retardant radio frequency cable and a manufacturing method. T...

AI Technical Summary

Problems solved by technology

There are many tape winding processes, and the structural stability is poor; the physical foamed polyethylene insulation is limited by the processing technology, and the degree of foaming cannot be too high, so the signal attenuation is large, and the insulation will deform when the temperature is high

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