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Composite material for outer sheath of cable

A technology of composite materials and raw materials, applied in the direction of plastic/resin/wax insulators, organic insulators, etc., can solve problems such as reduced lifespan, poor ductility, and potential safety hazards

Inactive Publication Date: 2018-08-28
陈丽
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the good insulation and low price of PVC materials, most of the existing cable outer sheaths are made of PVC materials. However, a single PVC material has strong rigidity and poor ductility. Once there is a temperature difference, the PVC cable outer sheath is easy to crack , and poor oxidation resistance, greatly reducing its life, and there is a great potential safety hazard

Method used

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  • Composite material for outer sheath of cable
  • Composite material for outer sheath of cable
  • Composite material for outer sheath of cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Composite material for cable outer sheath, its raw material components in parts by mass are:

[0020]

[0021] Its preparation method is:

[0022] Weighing components of PVC resin, styrene-butadiene rubber, silicone rubber, natural rubber, phthalate, zinc stearate, diphenylamine, graphite and castor oil;

[0023] Add natural rubber to the internal mixer, set the temperature of the internal mixer to 45°C, and the rotor speed to 80r / min. After banburying for 7 minutes, add styrene-butadiene rubber and silicon rubber. After banburying for 20 minutes, adjust the temperature of the banbury mixer When the temperature reaches 120°C, PVC resin and graphite are added to the internal mixer, and after internal mixing for 20 minutes, mixture a is obtained;

[0024] Add compound a, phthalate, zinc stearate, diphenylamine and castor oil into a high-speed mixer, set the mixing temperature to 80°C, and mix for 18 minutes to obtain compound b;

[0025] Add compound b into the twin-...

Embodiment 2

[0027] Composite material for cable outer sheath, its raw material components in parts by mass are:

[0028]

[0029] Its preparation method is:

[0030] Weigh the components of PVC resin, styrene-butadiene rubber, silicone rubber, natural rubber, epoxy butyl oleate, calcium stearate, p-phenylenediamine, carbon black and silicone oil;

[0031] Add natural rubber to the internal mixer, set the temperature of the internal mixer to 63°C, and the rotor speed to 73r / min. After banburying for 6 minutes, add styrene-butadiene rubber and silicon rubber. After banburying for 28 minutes, adjust the temperature of the banbury mixer When the temperature reached 85°C, PVC resin and carbon black were added to the internal mixer, and after internal mixing for 19 minutes, mixture a was obtained;

[0032] Add mixture a, epoxy butyl oleate, calcium stearate, p-phenylenediamine and silicone oil into the high-speed mixer, set the mixing temperature to 90°C, and mix for 16 minutes to obtain mi...

Embodiment 3

[0035] Composite material for cable outer sheath, its raw material components in parts by mass are:

[0036]

[0037] Its preparation method is:

[0038] Weigh the components of PVC resin, styrene-butadiene rubber, silicone rubber, natural rubber, propylene glycol adipate, potassium stearate, dihydroquinoline, alumina powder and silicate;

[0039] Add natural rubber to the internal mixer, set the temperature of the internal mixer to 65°C, and the rotor speed to 70r / min. After 4 minutes of internal mixing, add styrene-butadiene rubber and silicon rubber. After 30 minutes of internal mixing, adjust the temperature of the internal mixer to When the temperature reached 80°C, PVC resin and alumina powder were added to the internal mixer, and after internal mixing for 15 minutes, mixture a was obtained;

[0040] Add compound a, propylene glycol adipate, potassium stearate, dihydroquinoline and silicate into a high-speed mixer, set the mixing temperature to 110°C, and mix for 10 ...

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Abstract

The invention discloses a composite material for an outer sheath of a cable. The composite material comprises, by mass, 60-75 parts of PVC resin, 15-22 parts of styrene-butadiene rubber, 6-12 parts ofsilicon rubber, 4-8 parts of natural rubber, 3-7 parts of plasticizer, 5-8 parts of stabilizer, 0.4-1.2 parts of antioxidant, 15-25 parts of filler and 0.8-1.4 parts of lubricant. The composite material is used as the outer sheath, the composite material has relatively good flexibility, and under the condition that the temperature changes are large, the material has a certain stretching rate andis excellent in antioxidant performance and good in flame retardancy.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a composite material for an outer sheath of a cable. Background technique [0002] The outer sheath of the cable is the outer sheath located on the outermost layer of the cable. Its main function in the structure of the high-voltage cable is protection; the laying environment of the cable is often accompanied by moisture, corrosive substances and termite erosion. For cables with a metal sheath, the outer sheath located on the outermost layer of the cable is designed to protect the metal sheath (such as a corrugated aluminum sheath) from corrosion by surrounding substances. For cables without a metal sheath, the outer sheath directly protects and seals the main insulation; for insulation, most high-voltage cables with a voltage level above 110kV adopt a single-core structure, due to the electromagnetic induction of the conductor current when the cable is running The ind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L9/06C08L83/04C08L7/00C08K13/02C08K5/12C08K5/098C08K5/18C08K3/04C08K3/22C08K3/40C08K13/04C08K7/06H01B3/44
CPCC08L27/06C08K2003/2227C08L2201/02C08L2201/08C08L2203/202C08L2205/035H01B3/443C08L9/06C08L83/04C08L7/00C08K13/02C08K5/12C08K5/098C08K5/18C08K3/04C08K3/22C08K3/40C08K13/04C08K7/06
Inventor 陈丽
Owner 陈丽
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