Preparation method of cable sheath material

A cable sheath material and a technology for preparation steps, which are applied in the field of cable sheath material preparation, can solve the problems of poor flame retardancy and mechanical properties, and cannot be widely used in cables, etc., and achieve low cost, superior flame retardant performance, and non-combustibility Effect

Inactive Publication Date: 2017-03-08
张静
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: in view of the poor flame retardancy and mechanical properties of the existing polyethylene cable sheath material, which cannot be widely used in cables, the present invention firstly mixes attapulgite with flax fiber, and after Anaerobic fermentation and aerobic aeration, collecting the lower sediment, plasticizing it, dissolving, separating, and drying with absolute ethanol to prepare an activated dry product, and then mixing it with the fiber obtained by melting spandex waste silk The molten colloid is mixed to obtain a molten mixture, and finally mixed with polyethylene and other substances to obtain a cable sheathing material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020] First collect 2kg of spandex waste silk, put it into a fiber cutter, cut and pulverize it into 15mm short fibers, stir and mix the ethanol solution with a mass fraction of 45% and tetrahydrofuran in a mass ratio of 2:1 to obtain a fiber cleaning solution, and then According to the mass ratio of 1:2, soak the short fiber in the fiber cleaning solution, heat it, control the temperature at 35 ° C, heat and stir for 15 minutes, then let it stand and cool to room temperature, take out the short fiber after cleaning; The final short fiber was dried in an oven at 45°C for 50 minutes, and the dried fiber was melted in a melting furnace at a controlled temperature of 85°C for 55 minutes, and then cooled to room temperature with the furnace to obtain a fiber melt colloid for use; according to the mass ratio 3:2, after the attapulgite and the flax fiber are stirred and mixed evenly, they are placed in a ball mill for ball milling, and passed through a 120 mesh sieve to obtain a bal...

example 2

[0023] First collect 1kg of spandex waste silk, put it into a fiber cutter, cut and pulverize it into 10mm short fibers, stir and mix the ethanol solution with a mass fraction of 45% and tetrahydrofuran in a mass ratio of 2:1 to obtain a fiber cleaning solution, and then According to the mass ratio of 1:2, soak the short fiber in the fiber cleaning solution, heat it, control the temperature at 25 ° C, heat and stir for 10 minutes, then let it stand and cool to room temperature, take out the short fiber after cleaning; The final short fiber is dried in an oven at 40°C for 40 minutes, and the dried fiber is melted in a melting furnace at a controlled temperature of 60°C for 40 minutes, and then cooled to room temperature with the furnace to obtain a fiber melt colloid, which is ready for use; according to the mass ratio 3:2, after the attapulgite and flax fiber are stirred and mixed evenly, they are placed in a ball mill for ball milling, and passed through a 100 mesh sieve to ob...

example 3

[0026] First collect 2kg of spandex waste silk, put it into a fiber cutter, cut and pulverize it into 12mm short fibers, stir and mix the ethanol solution with a mass fraction of 45% and tetrahydrofuran in a mass ratio of 2:1 to obtain a fiber cleaning solution, and then According to the mass ratio of 1:2, soak the short fiber in the fiber cleaning solution, heat it, control the temperature at 30 ° C, heat and stir for 12 minutes, then let it stand and cool to room temperature, take out the short fiber after cleaning; The final short fibers were dried in an oven at 42°C for 45 minutes, and the dried fibers were melted in a melting furnace at a controlled temperature of 70°C for 50 minutes, and then cooled to room temperature with the furnace to obtain a fiber melt colloid for use; according to the mass ratio 3:2, after the attapulgite and flax fiber are stirred and mixed evenly, they are placed in a ball mill for ball milling, and passed through a 110 mesh sieve to obtain a bal...

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Abstract

The invention relates to a preparation method of a cable sheath material and belongs to the technical field of preparation of cable protection materials. The preparation method comprises steps as follows: attapulgite and linen fibers are mixed firstly and subjected to anaerobic fermentation and aerobic aeration, lower precipitates are obtained through collection, the precipitates are plasticized, dissolved with ethanol, separated and dried, an activated dry product is prepared and is mixed with a fiber molten colloid prepared from polyurethane waste fibers through melting, a molten mixture is obtained and is mixed with substances such as polyethylene and the like finally, and the cable sheath material can be obtained. The cable sheath material prepared with the method has excellent flame retardancy and is not prone to burning, and the oxygen index reaches 36 or higher; the tensile strength reaches 26 MPa or higher, and the breaking elongation reaches 320% or higher.

Description

technical field [0001] The invention relates to a preparation method of a cable sheath material, which belongs to the technical field of preparation of cable protection materials. Background technique [0002] Wire and cable are the carriers of power transmission and information transmission, and are widely used in industrial and civil electrical facilities. Wires and cables are used in different environments or occasions and have different requirements, which puts forward higher requirements for the cable sheath covering the outside of the cable. The main function of the cable sheath is to mechanically and electrically protect the transmission cable from various conditions that will cause it to lose its transmission function. The cable jacket must fulfill this protective function during installation, splicing and throughout the service life of the cable. During the service life of the cable, the sheath must protect the cable core from moisture and other pollution. The deg...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L75/04C08L1/02C08K9/00C08K3/34C08K5/13H01B3/44
CPCC08L23/06C08L2201/02C08L2203/202C08L2205/03C08L2205/16H01B3/441
Inventor 张静薛荣飞雷春生
Owner 张静
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