A kind of preparation method of coaxial cable

Abstract

The invention discloses a preparation method of a coaxial cable, which relates to the field of cable processing. The coaxial cable includes an inner conductor, an insulating layer, a shielding layer and an outer sheath, and the insulating layer includes a rubber layer and a foaming layer, wherein , take the oxygen-free copper core as the inner conductor, after straightening, sizing, and ultrasonic cleaning, dry the surface with nitrogen, and then spray the silver paste evenly on the surface of the oxygen-free copper core with a high-pressure spray gun to obtain the inner conductor. The silver-plated coating on the oxygen copper core protects the copper core against oxidation, prolongs the service life, enhances the directionality of signal transmission, and improves the signal quality. A rubber layer is provided outside the inner conductor to reduce the bending flexibility of the coaxial cable , There are heat dissipation holes on the rubber layer, which can help the inner conductor dissipate the heat generated during work, reduce the resistance of long-term work, and increase the current. In the outer sheath, aluminum hydroxide and magnesium hydroxide are added to the outer sheath. Triphenyl phosphite is used as an antioxidant to increase the flame retardant and anti-aging properties of the outer sheath.

Description

Technical field

[0001] The present invention involves the field of cable processing, especially the preparation method of coaxial cable. Background technique

[0002] Saguar cables can be divided into baseband coaxial cables and broadband coaxial cables (ie, network coaxial cables and video coaxial cables) from the purpose. The coaxial cable is divided into 50Ω baseband cables and 75Ω broadband cables.Fine -shaft cables and coarse same -thexis cables, baseband cables are only used for digital transmission, and the data rate can reach 10Mbps. For example, the patent number is 201110169520.1 is a coaxial cable and its production process.Stable and electrical performance of coaxial cables and their production processes, a coaxial cable includes internal conductors (1), external conductor (3), outer condoms (4), combined insulating layer, combined as a combinationThe insulation layer includes the inner thin layer (21), the foam insulation layer (22), the outer thin layer (23), the in...