Method for processing scrap wire and cable

A treatment method and technology for waste wires, applied in the direction of circuits, electrical components, electronic waste recycling, etc., can solve the problem of not being fully utilized, and achieve the effect of saving materials, excellent thermoplastic processing performance, and high cost performance

Inactive Publication Date: 2016-02-24
JIANGSU SAIER RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Then another component of rubber in waste cables has not been fully utilized. Waste rubber is a polymer pollutant second only to waste plastics.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Step 1) Use the sheath material of waste electric wires and cables as raw materials, the tensile strength is 11 MPa, the elongation at break is 400%, and the Shore hardness is 55 degrees.

[0022] The above raw materials were frozen at -20°C for 12 hours, then directly placed in an oven at 70°C for 2 hours, frozen at -20°C for 12 hours, then crushed, crushed and sieved to obtain 5-20 mesh particles. 980kg of the above-mentioned granules were mixed with 9.8kg of sodium bicarbonate. The above mixture is introduced into the extruder, the inlet end is 20°C, the outlet end is 100°C, and the highest temperature section is 270-290°C.

[0023] Step 2) take oxygen-free copper and tinned copper multiple stranded wires as soft conductors, and wrap a layer of polyester film outside it as a wrapping polyester tape layer; the wrapping must be tight and flat without pleating;

[0024] Step 3) Use the SJ-65 / 25 extruder to use the mixed material obtained in step 1) as a raw material, a...

Embodiment 2

[0029] Step 1) Use the sheath material of waste electric wires and cables as raw materials, the tensile strength is 11 MPa, the elongation at break is 400%, and the Shore hardness is 55 degrees.

[0030] The above raw materials were frozen at -25°C for 10 hours, then directly placed in an oven at 75°C for 3 hours, frozen at -25°C for 10 hours, then crushed, crushed and sieved to obtain 5-20 mesh particles. 980kg of the above-mentioned granules were mixed with 9.8kg of sodium bicarbonate. The above mixture is introduced into the extruder, the inlet end is 20°C, the outlet end is 100°C, and the highest temperature section is 270-290°C.

[0031] Step 2) take oxygen-free copper and tinned copper multiple stranded wires as soft conductors, and wrap a layer of polyester film outside it as a wrapping polyester tape layer; the wrapping must be tight and flat without pleating;

[0032] Step 3) Use the SJ-65 / 25 extruder to use the mixed material obtained in step 1) as a raw material, a...

Embodiment 3

[0037] Step 1) Use the sheath material of waste electric wires and cables as raw materials, the tensile strength is 11 MPa, the elongation at break is 400%, and the Shore hardness is 55 degrees.

[0038] The above raw materials were frozen at -20°C for 12 hours, then directly placed in an oven at 70°C for 2 hours, frozen at -20°C for 12 hours, then crushed, crushed and sieved to obtain 5-20 mesh particles. 980 kg of the above granules were mixed with 9.8 kg of sodium bicarbonate, 1 kg of ammonium bicarbonate, and 0.5 kg of paraffin. The above mixture is introduced into the extruder, the inlet end is 20°C, the outlet end is 100°C, and the highest temperature section is 270-290°C.

[0039] Step 2) take oxygen-free copper and tinned copper multiple stranded wires as soft conductors, and wrap a layer of polyester film outside it as a wrapping polyester tape layer; the wrapping must be tight and flat without pleating;

[0040] Step 3) Use the SJ-65 / 25 extruder to use the mixed mat...

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Abstract

The present invention discloses a method for processing a scrap wire and cable. The method comprises the steps of (1) carrying out pretreatment of the skin materials of a scrap wire and cable as raw materials, crushing the materials and then screening the materials, taking the granules of 5 to 20 meshes, and mixing the granules and sodium bicarbonate to obtain a mixed material, (2) winding a layer of polyester film around the outer part of a oxygen-free copper and tinned copper compound stranded wire which is taken as a soft conductor to be a winded polyester belt layer, (3) extruding an insulating layer outside the conductor winded in the step (2) with the mixed material obtained in the step (1) as a raw material by using an SJ-65/25 extruder, wherein the extrusion should be uniform, the thickness is consistent, the surface is smooth, and the color is consistent, (4) winding a layer of fire-resistant ceramic silicone rubber belt outside the insulation layer to be a fire-resistant layer, wherein the winding should be uniform without wrinkles, the thickness is consistent, the surface is smooth, and the color is consistent, and (5) extruding an insulation layer outside the fire-resistant layer completed in the step (4) with the mixed material obtained in the step (1) as a raw material by using an SJ-90 or120 extruder to obtain a product.

Description

technical field [0001] The invention belongs to the technical field of rubber production, and in particular relates to a treatment method for waste electric wires and cables. Background technique [0002] The development process of wire and cable products is essentially a process of upgrading materials. Wires and cables have a wide range of uses, and their performance requirements vary greatly in different use occasions. Insulation materials for most cables must not only have high insulation resistance, withstand voltage strength or low dielectric loss, but also have good physical and mechanical properties, such as tensile resistance, bending resistance, vibration resistance, torsion resistance, etc.; The sheath material has requirements for tear resistance, high and low temperature resistance, weather resistance, oil resistance, solvent resistance, etc. due to adapting to different use environments and occasions; some are comprehensive requirements for finished cables, suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B15/00
CPCH01B15/00H01B15/001H01B15/003H01B15/008Y02W30/82
Inventor 秦鹏
Owner JIANGSU SAIER RUBBER CO LTD
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