A preparation method of high-definition high-performance coaxial cable

Abstract

The invention provides a high-definition high-performance coaxial cable which is formed by an internal conductor, an insulating layer, an external conductor and a sheath layer which are coaxially arranged from inside to outside in turn along a radial direction in a composite way. The insulating layer is composed of an adhesive layer and a foaming insulating layer. The adhesive layer is adhered at the surface of the internal conductor. The foaming insulating layer is arranged outside the adhesive layer, and the foaming insulating layer and the adhesive layer are closely adhered together. The external conductor is composed of a self-adhesive aluminum foil layer and a braiding layer. The sheath layer is composed of a linear extrusion type structure. According to the internal conductor, dirt and impurities on the surface of the conductor are removed by adopting a scorching method so that DC resistivity of the conductor is reduced and attenuation constant performance of the conductor is enhanced. The insulating layer is composed of the adhesive layer and the foaming insulating layer. The adhesive layer is adhered at the surface of the internal conductor. The foaming insulating layer is arranged outside the adhesive layer, and the foaming insulating layer and the adhesive layer are adhered together. The adhesive layer is formed by LDPE, HDPE, adhesive agent and anti-oxidant agent through mixing and extrusion molding so that waterproof and anti-oxidation performance of the conductor can be realized, and insulating anti-compression and combination performance can be enhanced.

Description

[0001] (1) Technical field [0002] The invention relates to a high-definition high-performance coaxial cable and a preparation method thereof. [0003] (2) Background technology [0004] During the "Twelfth Five-Year Plan" period, the state will accelerate the development of the communication industry, promote the improvement of people's quality of life, improve the operation of the Internet of Things network system, upgrade the broadband network, and secure the information transmission of the communication network. Therefore, this will give rise to a new round of new demands for the development of high-quality coaxial cables, especially the development of high-definition multimedia interface equipment, and the new functions of achieving clearer and clearer images, sounds, and texts through high-resolution video data . However, the transmission frequency of the original coaxial cable is 2GHz, and the image resolution is low, which cannot meet the development and matching need...

AI Technical Summary

Problems solved by technology

[0005] However, the currently prepared coaxial cable conductors retain the saponification solution produced by wire drawing, which is easy to cause discoloration of the conductors, which affects the transmission characteristics and service life of the conductors; the insulating materials of the prepared coaxial cables are all produced by ordinary physical foaming. The foaming nucleating agent and nitrogen gas are not fully foamed, and there are residues in the insulation. At the same time, the foaming density and uniformity are different, which directly affects the attenuation constant and return loss characteristics of 2G-4G cables. Conducive to high-speed, high-definition transmission of 4G information

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