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 and high 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 minus 0.015g/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 to 1.0 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 dicing of 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, foamed filling ropes of optical cables, and a production method thereof. Background technique [0002] In the optical cables produced in the early stage, there was no filler between the optical waveguides and between the conductors and the shell, the optical cables were not round, and the protection of the cable core was poor. CN99127443.1 disclosed the "optical cable core with multiple optical waveguides" applied by the French. "Patent, this application technology is a kind of by 12 optical waveguides as the cable core, outsourcing two-layer shell, between 12 optical waveguides and between optical waveguide and the shell is not provided with filling rope, but with a kind of such as petroleum jelly Filled with materials that prevent longitudinal and horizontal movement, the weight is heavy, and the prot...

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 pro

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