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Shielding double-layer heat shrinkable casing pipe

A heat-shrinkable sleeve, double-layer technology, applied in the fields of magnetic field/electric field shielding, electrical components, etc., can solve the problems of complicated operation and low production efficiency, and achieve the effects of flexible operation, reduced production cost, and convenient installation and use.

Inactive Publication Date: 2017-05-10
SHANGHAI CHANGYUAN ELECTRONICS MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the purpose of the present invention is to solve the technical problems of complex operation and low production efficiency caused by the use of conductive tape and embedded metal pipe bus bars in the prior art to manufacture electromagnetic shielding cables

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] First take 100 parts of ethylene vinyl acetate, 2 parts of tetra[β-(3,5-tertiary butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester, 12 parts of conductive furnace carbon black (CF), titanic acid 1 part of ester coupling agent, 5 parts of PE wax and 2 parts of triallyl isocyanurate are mixed and granulated to obtain modified conductive polyolefin particles. In addition, 100 parts of polyethylene, 2 parts of dilauryl thiodipropionate, 5 parts of PE wax, and 2 parts of triallyl isocyanurate are mixed and granulated to obtain semi-crystalline modified polyolefin particles. The above two materials are melted and co-extruded in a special composite equipment to obtain a double-wall composite pipe with an inner layer of conductive polyolefin material and an outer layer of insulating polyolefin material, and then the double-wall composite pipe is irradiated with high energy rays After cross-linking, and finally by heating, expanding and shaping, the shielded double-wal...

Embodiment 2

[0023] First, take 100 parts of ethylene vinyl acetate, 1.5 parts of bis(3,5-tertiary butyl-4-hydroxyphenyl) sulfide, 10 parts of superconducting furnace carbon black (SCF), 2 parts of silane coupling agent, 3 parts of paraffin oil and 1 part of pentaerythritol triacrylate were mixed and granulated to obtain modified conductive polyolefin particles. In addition, 100 parts of ethylene vinyl acetate, tetra[β-(3,5-tertiarybutyl-4-hydroxyphenyl) ) Propionic acid] 2 parts of pentaerythritol ester, 3 parts of PE wax, and 1 part of pentaerythritol triacrylate are mixed and granulated to obtain semi-crystalline modified polyolefin particles. The above two materials are melted and co-extruded in a special composite equipment to obtain a double-wall composite pipe with an inner layer of conductive polyolefin material and an outer layer of semi-crystalline insulating olefin material, and then the double-wall composite pipe is passed through high-energy rays Radiation cross-linking, and fi...

Embodiment 3

[0025] First, 70 parts of ethylene vinyl acetate, 30 parts of polyethylene, 2 parts of 2,6-tertiary butyl-4-methylphenol, 15 parts of superconducting furnace carbon black (SCF), 3 parts of titanate coupling agent , 10 parts of PE wax and 1.5 parts of hydroxypropyl methacrylate are mixed and granulated to obtain modified conductive polyolefin particles. In addition, 70 parts of ethylene vinyl acetate, 30 parts of polyethylene, 0.5 part of dilauryl thiodipropionate, 3 parts of paraffin oil, and 1.5 parts of hydroxypropyl methacrylate were mixed and granulated to obtain semi-crystalline modified polyolefin particles. The above two materials are melted and co-extruded in a special composite equipment to obtain a double-wall composite pipe with an inner layer of conductive olefin material and an outer layer of semi-crystalline insulating polyolefin material, and then pass the double-wall composite pipe through high energy rays Radiation cross-linking, and finally heat expansion and ...

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PUM

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Abstract

The invention discloses a shielding double-layer heat shrinkable casing pipe. The shielding double-layer heat shrinkable casing pipe comprises an inner layer and an outer layer which are compounded for molding, wherein the inner layer is a conductive polyolefin modified material layer and is prepared from, by weight, 100 parts of thermoplastic polyolefin, 0.5-2 parts of antioxidant, 8-15 parts of conductive black carbon, 10-20 parts of lubricant and other additives and 0.5-2 parts of cross linking additive. The outer layer is a semi-crystalline modified polyolefin material and is prepared from, by weight, 100 parts of thermoplastic polyolefin, 0.5-2 parts of antioxidant, 2-5 parts of lubricant and other additives and 0.5-2 parts of cross linking additive.

Description

Technical field [0001] The invention relates to the technical field of heat shrinkable sleeves used in the electromagnetic shielding field, in particular to a shielded double-layer heat shrinkable sleeve. Background technique [0002] Heat shrinkable materials are widely used in information and communication fields such as electronics, electrical appliances, aerospace, and automobiles. At present, conductive tapes and embedded metal tube bus bars are usually used in the electromagnetic shielding places of cables, which are inconvenient to operate on many occasions, resulting in low production efficiency. Summary of the invention [0003] In view of this, the purpose of the present invention is to solve the technical problems of complicated operations and low production efficiency caused by the use of conductive tapes and embedded metal tube bus bars in the manufacture of electromagnetic shielding cables in the prior art. [0004] In order to solve the above-mentioned technical prob...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08K13/02C08K3/04C08L23/06H05K9/00
CPCC08L23/0853C08L23/06C08L2203/18C08L2205/025C08L2205/03H05K9/0098C08K13/02C08K3/04C08L91/06
Inventor 朱贤兵陈利军舒子杰
Owner SHANGHAI CHANGYUAN ELECTRONICS MATERIAL
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