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Preparation method of high-voltage-resistant high hardness cable sheath material

A sheath material, high-voltage resistant technology, applied in the direction of insulated cables, cables, circuits, etc., can solve the problems of affecting the normal detection of cables, endangering the safety of cable operation, easy damage to cable laying, etc., to achieve good surface smoothness and increase service life. , The effect of improving scratch resistance

Inactive Publication Date: 2014-08-20
ANHUI ELECTRIC GRP SHARES
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0002] The sheath material in high-voltage cables is generally made of materials with high insulation resistance. When multiple points are continuously grounded, dangerous voltages can be formed at the sheath position far away from the site, which will not only endanger the operation safety of the cable, but also cause damage to the cable. Leading to electric shock for construction personnel, graphite is usually coated on the sheath layer for discharge at present, but it is easy to damage and fall off during cable laying, pollute the surrounding environment, seriously affect the normal detection during cable installation, and cause many problems to manufacturers and users. trouble

Method used

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  • Preparation method of high-voltage-resistant high hardness cable sheath material

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preparation example Construction

[0014] refer to figure 1 , a kind of preparation method that the present invention proposes a high-voltage-resistant high-hardness sheath material for cables, comprising the following steps:

[0015] S1, take by weight 75-100 parts of PVC resin with relative density of 1.38-1.43, 15-20 parts of ethylene-vinyl acetate resin with 17.5-19.2% ethylene-vinyl acetate content, 5-7 parts by weight Composite environment-friendly heat stabilizer composed of environment-friendly Ca / Zn composite stabilizer and epoxidized soybean oil, equivalent to 50-73% microencapsulated red phosphorus of composite environment-friendly heat stabilizer, 2-5 parts of expanded graphite, 0.2-0.4 1 part of polyethylene wax and 0.2-0.27 parts of high-efficiency lubricant are placed in a low-speed kneader and stirred evenly;

[0016] S2, take by weighing phthalates equivalent to 17-30% of the total weight of PVC resin and ethylene-vinyl acetate resin, 3-10 parts of conductive metal powder, (1.5-3) times the co...

Embodiment 1

[0019] In this embodiment, a method for preparing a high-voltage-resistant high-hardness sheath material for cables includes the following steps:

[0020] S1, taking by weight 85 parts of relative density is the PVC resin of 1.42, 16 parts of ethylene-vinyl acetate content is the ethylene-vinyl acetate resin of 17.8%, 6.5 parts are made of environment-friendly type Ca / Zn composite stabilizer and ring Composite environment-friendly heat stabilizer composed of oxygenated soybean oil, 4.7 parts of microencapsulated red phosphorus, 5 parts of expanded graphite, 0.35 part of polyethylene wax and 0.23 part of high-efficiency lubricant are placed in a low-speed kneader and stirred evenly;

[0021] S2, take by weighing bis(2-ethylhexyl) phthalate equivalent to both the gross weight of PVC resin and ethylene-vinyl acetate resin 20.2%, 9 parts of conductive metal powder, 1.5 times of conductive metal powder content Conductive carbon black, calcined pottery clay equivalent to 75% of poly...

Embodiment 2

[0024] In this embodiment, a method for preparing a high-voltage-resistant high-hardness sheath material for cables includes the following steps:

[0025] S1, taking by weight 75 parts of relative density is the PVC resin of 1.38, 15 parts of ethylene-vinyl acetate content is the ethylene-vinyl acetate resin of 17.5%, 5 parts are made of environment-friendly type Ca / Zn compound stabilizer and ring Composite environment-friendly heat stabilizer composed of oxygenated soybean oil, 2.5 parts of microencapsulated red phosphorus, 4.5 parts of expanded graphite, 0.2 part of polyethylene wax and 0.2 part of high-efficiency lubricant are placed in a low-speed kneader and stirred evenly, and the stirring speed is 68r / min;

[0026] S2, take by weighing the dibutyl phthalate that is equivalent to PVC resin and ethylene-vinyl acetate resin both gross weight 17.5%, 3 parts of conductive metal powder, the conductive carbon black of 2.4 times of conductive metal powder content, be equivalen...

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Abstract

The invention discloses a preparation method of a high-voltage-resistant high hardness cable sheath material, and the method comprises the following steps: weighing PVC (polyvinyl chloride) resin, ethylene-vinyl acetate resin with ethylene-vinyl acetate content of 17.5-19.2%, a composite environmental-friendly heat stabilizer comprising an environmental-friendly Ca / Zn composite stabilizer and epoxy soybean oil, micro encapsulated red phosphorus, expandable graphite, polyethylene wax and a super lubricant to put in a low speed kneader for mixing evenly; weighing phthalate, conductive metal powder, conductive carbon black, calcined clay, talcum powder and an antioxidant to put in the low speed kneader for mixing evenly with the obtained material, then putting the prepared material into a high speed kneader for heating for mixing evenly at a high speed, sending into a twin-screw granulator for extrusion granulating, and drying to obtain the high-voltage-resistant cable sheath material. The high-voltage-resistant high hardness cable sheath material is excellent in high-voltage-resistant performance, free of falling off, higher in hardness and stable in performance.

Description

technical field [0001] The invention relates to the technical field of sheath materials for high-voltage cables, in particular to a method for preparing a high-voltage resistant and high-hardness sheath material for cables Background technique [0002] The sheath material in high-voltage cables is generally made of materials with high insulation resistance. When multiple points are continuously grounded, dangerous voltages can be formed at the sheath position far away from the site, which will not only endanger the operation safety of the cable, but also cause damage to the cable. Leading to electric shock for construction personnel, graphite is usually coated on the sheath layer for discharge at present, but it is easy to damage and fall off during cable laying, pollute the surrounding environment, seriously affect the normal detection during cable installation, and cause many problems to manufacturers and users. trouble. Contents of the invention [0003] The invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L23/08H01B3/44H01B7/18C08K13/06C08K9/10C08K3/02C08K5/1515C08K3/04C08K5/12C08K3/08C08K3/34
Inventor 赵建军童茜徐国峰
Owner ANHUI ELECTRIC GRP SHARES
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