Optical cable foaming packing gasket granule material and method for producing same

Abstract

The invention relates to an optical cable foaming packing gasket granule and a manufacturing method thereof; the mixture ratio of the materials and the weight parts are: 50-60 parts of low density andhigh pressure polyethylene, 15-25 parts of high density and low pressure polyethylene, 10-30 parts of polypropylene, 0.5-1.5 parts of Tissuemat E, 0.5-1.5 parts of stearic acid, 0.4-1.2 parts of calcium stearate and 0.4-1.2 parts of four pentaerythritol fat which are prepared by heating kneading, extrusion, cooling, drying and grain-sized dicing. The granule has the density of 0.944 plus or minus0.015g / cm<3>, tensile-strength of being more than or equal to 20MPa, the elongation of break of being more than or equal to 580 percent, the electric volume resistivity of being more than or equal to1.0 multiplied by 10 <13> Omega m, the oxidation induced period of being more than or equal to 30 min, the solution moving speed of being less than or equal to 2.0g / 10min and moisture of being less than or equal to 0.08 percent. The granule is prepared by three steps of mixing and kneading of material, fusing and extruding strip formation of the kneaded objects and cooling and grain-sized dicingof the strip, is exclusively used for preparing the material of optical cable foaming packing gasket, and has the advantages of light weight, saving material, being applicable to foaming and joint connection with PBT plastic, and the like.

Description

Technical field [0001] The invention relates to a granular material prepared from a mixture of polyethylene and polypropylene for the production of optical elements, that is, an optical cable foamed filling rope, and a production method thereof. Background technique [0002] In the early production of optical cables, there were no fillers between the optical waveguides and between the conductor and the shell, the optical cable was not round, and the protection of the cable core was poor. CN99127443.1 disclosed the French application "optical cable core with multiple optical waveguides. "Patent, the application technology is a kind of 12 optical waveguides as the cable core, outer two-layer shell, no filling rope is set between the 12 optical waveguides and between the optical waveguide and the shell, but a kind of petroleum glue is used. It is filled with materials that prevent vertical and horizontal movement, and the weight is large, and the protection strength of the cable cor...

AI Technical Summary

Problems solved by technology

However, these filling ropes made of calcium carbonate and polypropylene are solid ropes. The amount of polypropylene and other raw materials is large, the weight of the filling rope itself is large, the hardness is large, and the cushioning against external forces is poor, so there are high raw material costs and high product weight. The disadvantages of heavy weight and poor protection effect

After retrieval and market investigation, no data and objects related to the foamed filling rope of the optical cable have been found, so there is no relevant data report and physical product of the granular material used to produce the filling rope.

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