High-performance composite cable jacket material for cables

Abstract

The invention discloses a high-performance composite cable jacket material for cables. The high-performance composite cable jacket material is prepared from the following raw materials in parts by weight: 35-45 parts of ethylene propylene terpolymer, 30-50 parts of EVA resin, 30-45 parts of modified nanokaolin, 1-2 parts of dibenzothiazyl disulfide, 1.5-2.5 parts of zinc oxide, 1-3 parts of zinc dimethyldithiocarbamate, 1-2 parts of anti-aging agent ODA, 45-55 parts of high abrasion furnace black, 25-35 parts of calcined clay, 20-30 parts of nano calcium carbonate, 1-1.8 parts of dioctyl phthalate, 1-3 parts of stearic acid, 0.5-1.5 parts of chlorinated paraffin, 2-4 parts of solid calcium-zinc stabilizer and 1-2.5 parts of anti-aging agent RD. The high-performance composite cable jacket material for cables disclosed by the invention has good ageing resistance, good mechanical properties and low cost.

Description

technical field [0001] The invention relates to the technical field of cable sheaths, in particular to a high-performance composite cable sheath material for cables. Background technique [0002] With the rapid development of China's cable industry, the number of new companies is increasing, and the overall technical level of the industry has been greatly improved. In the line, the proportion of cables is gradually increasing. The outermost layer of cables is generally rubber or rubber synthetic sleeves. This The role of the insulation layer is to protect the cable from damage. However, during laying or operation, the sheath layer of the cable can be damaged or mechanically damaged, and the long-term overload operation will easily cause the sheath layer of the cable to age and dry out. , so that the sheath layer loses or reduces the protective performance. The performance of the rubber material of the sheath layer is directly related to the fillers added. Because kaolin is ...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of China's cable industry, the number of new companies is increasing, and the overall technical level of the industry has been greatly improved. In the line, the proportion of cables is gradually increasing. The outermost layer of cables is generally rubber or rubber synthetic sleeves. This The role of the insulation layer is to protect the cable from damage. However, during laying or operation, the sheath layer of the cable can be damaged or mechanically damaged, and the long-term overload operation will easily cause the sheath layer of the cable to age and dry out. , so that the sheath layer loses or reduces the protective performance

The performance of the rubber material of the sheath layer is directly related to the fillers added. Because kaolin is rich in raw materials, simple in processing technology, and low in cost, it is one of the commonly used inorganic mineral fillers in the rubber sheath layer. Kaolin is based on kaolinite and The clay ore with halloysite as the main mineral component has a dioctahedral structure consisting of 1:1 silicon-oxygen tetrahedron and aluminum-oxygen octahedron, which share oxygen atoms, but The particles are fine, the surface area is large, the surface is hydrophilic, the surface has high activity, and it is easy to agglomerate. At the same time, due to the different interface properties between kaolin and polymer, the compatibility is poor, and it is difficult to disperse evenly when filling the polymer itself. Separation reduces the mechanical and mechanical properties of the polymer to a certain extent, so that the excellent properties of this fine kaolin cannot be fully utilized. How to prepare a high-performance composite cable sheath material for cables with aging resistance, good mechanical properties, and low cost Become a current technical problem that needs to be solved