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Cold-resistant insulating grade PVC sheath material for extra-high voltage cables and its preparation

A cold-resistant insulation and ultra-high voltage technology, applied in the direction of insulated conductors, insulated cables, organic insulators, etc., can solve the problems of non-rat proof, termite proof, low volume resistance, etc., and achieve excellent processing performance and excellent electrical properties.

Active Publication Date: 2016-01-20
SHANGHAI KAIBO SPECIAL CABLE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the defects of the existing 90°C temperature-resistant grade PVC sheathing material in the prior art, which have low volume resistance, no rodent resistance and no termite resistance, and provide an insulation grade with higher electrical properties, which is cold-resistant and anti-termite. Anti-rat, termite-resistant, cold-resistant insulation-grade PVC sheath material for extra-high voltage cables with a temperature resistance of 90°C and its preparation method

Method used

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  • Cold-resistant insulating grade PVC sheath material for extra-high voltage cables and its preparation
  • Cold-resistant insulating grade PVC sheath material for extra-high voltage cables and its preparation
  • Cold-resistant insulating grade PVC sheath material for extra-high voltage cables and its preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1. Experimental materials

[0024]

[0025] 2. Preparation method:

[0026] a, 100 kilograms of ground slurry material and PVC resin, 15 kilograms of calcined pottery clay, 2 kilograms of medium pigment carbon black, 12 kilograms of plasticizer a dioctyl terephthalate, 4 kilograms of compound environment-friendly heat stabilizers, Plasticizer b dioctyl sebacate 12 kg, polyethylene wax 0.3 kg, high-efficiency lubricant G600.5 kg, plasticizer c trioctyl trimellitate 12 kg, antioxidant bisphenol A 0.15 kg , 1.5 kilograms of potassium naphthenate, 0.5 kilograms of capsaicin, and 5 kilograms of titanium dioxide are placed in a high-speed kneader and heated for high-speed stirring. The temperature of the high-speed kneader is controlled at 100-120 ° C, and the kneading time is 5-10 minutes;

[0027] b. The uniformly stirred raw materials are directly fed into the twin-screw feeder for extrusion, and the heating temperature of each section of the twin-screw feeder is equal...

Embodiment 2

[0030] 1. Experimental materials

[0031]

[0032] 2. Preparation method

[0033] Using the raw materials of this example, the method for preparing the cold-resistant insulating grade PVC sheath material for extra-high voltage cables is the same as that in Example 1.

Embodiment 3

[0035] 1. Experimental materials

[0036]

[0037]

[0038] 2. Preparation method

[0039] Using the raw materials of this example, the method for preparing the cold-resistant insulating grade PVC sheath material for extra-high voltage cables is the same as that in Example 1.

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Abstract

The invention discloses a cold-resistant insulating level PVC (polyvinyl chloride) sheath material for an extra-high-tension cable and preparation thereof. The raw material of the cold-resistant insulating level PVC sheath material for an extra-high-tension cable comprises the following components in parts by weight: 90-100 parts of PVC resin, 12-18 parts of plasticizer a, 10-15 parts of calcined argil, 1-2 parts of color black, 4-8 parts of heat stabilizer, 6-12 parts of plasticizer b, 0.1-0.2 part of antioxidant, 0.2-0.4 part of polyethylene wax, 0.5-1 part of lubricant, 10-20 parts of plasticizer c, 1-2 parts of metal naphthenate, 0.5-5 parts of capsaicine and 5-10 parts of titanium dioxide. The cold-resistant insulating level PVC sheath material for an extra-high-tension cable, disclosed by the invention, can be widely applied to the cold-resistant level and rat-proof and termite-proof outer sheath for an extra-high-tension cable.

Description

technical field [0001] The invention relates to a cable sheath material and a preparation method thereof, in particular to a cold-resistant insulating grade PVC sheath material for ultra-high voltage cables and a preparation method thereof. Background technique [0002] Among the soft polyvinyl chloride plastics for wire and cable, the higher temperature resistance grade specified in GB / T8815-2008 is 90 ℃ polyvinyl chloride insulation material and sheath material, and the volume resistivity standard of the sheath material is 1×10 9 Ω.m, while the current 90°C PVC sheathing material used for high-voltage transmission grids must also meet certain insulation properties, and the volume resistivity standard of the sheathing material is increased to 5×10 11 Ω.m, some cables even require higher volume resistivity. At the same time, the low-temperature impact embrittlement temperature standard of the sheath material specified in GB / T8815-2008 is -20°C. At present, although there ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06H01B3/44H01B7/28C08K13/02C08K3/34C08K3/04C08K5/098C08K3/22
Inventor 崔德刚汪晓明
Owner SHANGHAI KAIBO SPECIAL CABLE FACTORY
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