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Production method of wear-resisting, oil-resisting insulating sheath material for high-voltage lines

A technology of high-voltage wires and insulating sheaths, which is applied in the direction of insulated conductors, insulated cables, and organic insulators. It can solve the problems of large decline in tensile strength and elongation at break, short service life of cables, and easy cracking. The effect of material strengthening performance and high modulus

Inactive Publication Date: 2017-02-01
DEQING BAISHENG PLASTIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The outermost sheath layer of the cable is generally rubber or rubber synthetic sheath. The function of this layer is to insulate and protect the cable from damage. The aging performance, wear resistance and oil resistance of ordinary rubber sheaths are poor. It is easy to crack, and the tensile strength and elongation at break drop greatly after immersion in oil, which makes the service life of the cable short and prone to cracking. At the same time, due to the large heat generated in the high-voltage wire, there are hidden dangers in safety performance

Method used

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  • Production method of wear-resisting, oil-resisting insulating sheath material for high-voltage lines
  • Production method of wear-resisting, oil-resisting insulating sheath material for high-voltage lines

Examples

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Effect test

Embodiment 1

[0028] The wear-resistant and oil-resistant insulating sheath material used in high-voltage wires, its raw materials include: 40% polyvinyl chloride resin, 5% polybutylene terephthalate, 2% polyethylene wax, anti-scorch agent 5% by weight %, plasticizer 15%, calcium zinc stabilizer 5%, insulation aid 5%, filler 18%, processing aid 3%, lubricant 0.4%, antioxidant 0.6%, flame retardant 3%, chlorine Solid plasticizer 5%.

[0029] The plasticizer adopts a plasticizer with a polymerization degree of 1000-3000, which fully guarantees the oil resistance of the sheath. The chlorine-containing solid plasticizer can increase the insulation of the sheath, further improve the processing performance, improve the water extraction resistance, and increase the flame retardancy. The filler includes 20 parts of carbon fiber, 15 parts of carbon black, and 28 parts of calcined clay, wherein the calcined clay includes 10% kaolinite, 15% hydromuscovite, 20% montmorillonite, 20% quartz and 25% octo...

Embodiment 2

[0031] Wear-resistant and oil-resistant insulating sheath materials used in high-voltage wires, the raw materials include: polyvinyl chloride resin 50%, polybutylene terephthalate 8%, polyethylene wax 3%, anti-scorch agent 8 %, plasticizer 20%, calcium zinc stabilizer 7%, insulation aid 7%, filler 125%, processing aid 5%, lubricant 1%, antioxidant 1%, flame retardant 5%, chlorine Solid plasticizer 8%.

[0032] The plasticizer adopts a plasticizer with a polymerization degree of 1000-3000, and the filler includes 25 parts of carbon fiber, 18 parts of carbon black, and 30 parts of calcined clay, wherein the calcined clay includes 20% kaolinite, 8% water muscovite, 10 % montmorillonite, 20% quartz and 15% feldspar. The anti-scorch agent is N-cyclohexylthiophthalamide, and the processing aid is acrylate copolymer.

Embodiment 3

[0034] A method for producing a wear-resistant and oil-resistant insulating sheath material used in high-voltage electric wires, comprising the following steps:

[0035] Step (1): Calcining at 500-550°C after uniformly mixing 20% ​​by weight of kaolinite, 10% of muscovite, 15% of montmorillonite, 35% of quartz and 20% of feldspar After 3-6 hours, cool to 30-35°C and prepare for use to form calcined clay; calcining the clay at a high temperature and then cooling it to room temperature can effectively improve the performance of the clay and further strengthen the strength of the filler;

[0036] Step (2): adding carbon fiber and carbon black to the cooled mixture in step (1), wherein 15-25 parts of carbon fiber, 15-18 parts of carbon black, and 25-30 parts of calcined clay;

[0037] Step (3): adding water to the mixture in step (1) to form a mixture slurry, wherein the weight ratio of water to the mixture is 3:1;

[0038] Step (4): Heating hydrochloric acid with a concentration...

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Abstract

The invention relates to the technical field of cable sheaths, and discloses a production method of a wear-resisting, oil-resisting insulating sheath material for high-voltage lines. The method comprises the following steps: (1) preparing filler; (2) adding a base material and auxiliary materials, comprising polyvinyl chloride resin, polybutylene terephthalate and polyethylene wax; (3) adding rubber chemicals; (4) extruding through an extruder, and then cooling and pelleting. According to the method, by reasonably controlling all components in the technology in terms of ratio and processing, the cable material prepared can be high in tensile strength and good in stability, and have excellent water resistance. According to the method, through reasonable blending, compared with a common sheath, the tensile strength and the elongation at break of a sheath is obviously improved, and meanwhile, the oil resistance and the wear-resisting property are greatly improved.

Description

technical field [0001] The invention relates to the technical field of cable sheaths, in particular to a production method for wear-resistant and oil-resistant insulating sheath materials used in high-voltage electric wires. Background technique [0002] The outermost sheath layer of the cable is generally rubber or rubber synthetic sheath. The function of this layer is to insulate and protect the cable from damage. The aging performance, wear resistance and oil resistance of ordinary rubber sheaths are poor. It is easy to crack, and the tensile strength and elongation at break drop greatly after immersion in oil, which makes the service life of the cable short and prone to cracking. At the same time, due to the large heat generated in the high-voltage wire, there are hidden dangers in safety performance. [0003] The preparation of the cable sheath needs to add synthetic materials, and the synthetic materials are flammable and combustible materials, which pose a great threa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L67/02C08L23/06C08L33/04C08K13/04C08K7/06C08K3/04C08K3/34C08K3/36H01B7/18H01B7/295H01B7/28H01B3/44
CPCC08L27/06C08K2201/014C08L2201/02C08L2203/202C08L2205/035H01B3/443H01B7/1835H01B7/2806H01B7/295C08L67/02C08L23/06C08L33/04C08K13/04C08K7/06C08K3/04C08K3/34C08K3/36
Inventor 朱树范
Owner DEQING BAISHENG PLASTIC CO LTD
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