A high tracking resistance adss optical cable sheath material

Abstract

The invention provides a high-tracking-resistant ADSS (all dielectric self-supporting) optical cable jacket material which comprises the following raw materials in parts by weight: 20-65 parts of polyethylene resin, 5-50 parts of polysiloxane, 0.5-10 parts of an accelerator, 5-125 parts of an electric corrosion-resistant stabilizer, 1-20 parts of a compatilizer, 0-40 parts of reinforcing fillers and 0-3 parts of an assistant, wherein the accelerator is a compound with active epoxy groups described in the specification or a high polymer with active epoxy groups described in the specification; the electric corrosion-resistant stabilizer is inorganic hydroxide with hydroxyls.

Description

technical field [0001] The invention relates to an ADSS optical cable sheathing material, in particular to a highly tracking-resistant ADSS optical cable sheathing material with excellent dirt resistance and self-cleaning properties. Background technique [0002] ADSS optical cable (all-dielectric self-supporting optical cable) has the advantages of light weight, small outer diameter, large laying span, and easy laying, and it can be laid on the same tower as the high-voltage transmission line, making full use of space resources. At the same time, its Overhaul can be continuously powered, so it has attracted much attention and continued research in recent years. [0003] However, the ADSS optical cable laid outdoors usually accumulates a large amount of dust on the surface during use. The surface dust forms a turbid liquid and an electromagnetic field when it comes into contact with rainwater. , The turbid liquid will continue to volatilize. When the liquid is completely vo...

AI Technical Summary

Problems solved by technology

The electrical traces form an electric corrosion effect on the sheath material of the ADSS optical cable. Severe electrical traces will cause the breakdown and decomposition of the sheath material, which will lead to breakage, resulting in a significant reduction in the service life of the optical cable.

At the same time, the anti-pollution effect of the surface of the optical cable is poor, and a large amount of dust and bacteria will be transmitted when the human skin is in direct contact with it, causing damage to human health.

[0004] Chinese patent CN101747630A relates to the formulation of electric tracking resistant optical cable sheath material, but it mainly improves the hydrophobicity of the sheath material, and has no effect on the anti-fouling and self-cleaning research on the surface of the sheath material itself

[0005] And the common method of those skilled in the art is: adopt non-polar polymer material, for example adopt polyethylene; Reduce the content of carbon black (generally less than 2.6%), increase anti-ultraviolet additive simultaneously; Add trihydrate at sheath material Aluminum oxide, using its decomposition to release water vapor to take away heat, stops the tracking, but its addition will reduce the mechanical properties of the sheath; or use XLPE to improve the temperature resistance level of the sheath, but the process is complicated (see "ADSS Research on Optical Cable Sheathing Materials", Baidu Library)

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