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Insulating material for power distribution system

A technology of insulating materials and materials, applied in the direction of insulated conductors, insulated cables, rubber insulators, etc., can solve problems such as hindering safe evacuation and fire fighting work, loss of life and property, etc.

Inactive Publication Date: 2016-03-30
STATE GRID SHANDONG ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] No matter from the perspective of mechanical properties, thermal fire chemical resistance and disaster protection, the outer insulation material of the cable plays a vital role in protecting the internal material from damage and maintaining its normal operation. In the specific application process, the cable The outer insulating material must be able to resist sunlight, UV radiation, ozone aging, and chemical erosion, and at the same time, it can still guarantee or temporarily guarantee its normal operation in the case of accidental disasters. With the frequent occurrence of electrical fire accidents, the resistance of wires and cables The burning problem has gradually attracted the attention of all countries in the world; when the cable burns, it releases a large amount of smoke and toxic and corrosive gases, which are dangerous factors in fires, which hinder people's safe evacuation and fire fighting work, and cause serious losses of life and property. At the same time, with the development of the communication industry, the automobile industry and the computer industry, especially in many occasions such as aviation wires, automobile wires, high-temperature instrument cables, and oil drilling platform cables, it is increasingly necessary to use flame-retardant, thermally stable, and heat-resistant materials. Cable outer layer insulation material with high deformation temperature

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] An insulating material for power distribution system, which is prepared from the following raw materials by weight:

[0022] 20 parts of hydrogenated nitrile rubber, 15 parts of polyvinyl chloride, 12 parts of EPDM, 10 parts of polypropylene resin, 7 parts of triallyl cyanurate, 6 parts of aluminum nitride, 5 parts of egg shells, 4 parts haylite, 3 parts stearic acid, 3 parts zinc borate, 3 parts glass fiber, 2 parts borax, 2 parts triphenyl phosphate, 1 part oleic acid amide, 1 part magnesium oxide, 1 part aluminum hydroxide.

[0023] The particle sizes of the aluminum nitride, zinc borate, magnesium oxide and aluminum hydroxide are all controlled at 100 mesh; the diameter of the glass fiber is 10um and the length is 30um.

[0024] The preparation method of the above-mentioned insulating material comprises the following steps:

[0025] Step 1) Preparation of material 1: Add egg shells, palygorskite and borax to the crusher in turn for crushing, and then grind to obtai...

Embodiment 2

[0030] An insulating material for power distribution system, which is prepared from the following raw materials by weight:

[0031] 25 parts of hydrogenated nitrile rubber, 17 parts of polyvinyl chloride, 15 parts of EPDM, 12 parts of polypropylene resin, 9 parts of triallyl cyanurate, 8 parts of aluminum nitride, 7 parts of egg shell, 6 parts haylite, 5 parts stearic acid, 5 parts zinc borate, 4 parts glass fiber, 3 parts borax, 3 parts triphenyl phosphate, 2 parts oleic acid amide, 2 parts magnesium oxide, 2 parts aluminum hydroxide.

[0032] The particle sizes of the aluminum nitride, zinc borate, magnesium oxide and aluminum hydroxide are all controlled at 100 mesh; the diameter of the glass fiber is 20um and the length is 50um.

[0033] The preparation method of the above-mentioned insulating material comprises the following steps:

[0034] Step 1) Preparation of material 1: Add egg shells, palygorskite and borax to the crusher in turn for crushing, and then grind to obt...

Embodiment 3

[0039] The performance test of the insulating material prepared by the present invention:

[0040] 1. The mechanical properties, corrosion resistance and insulating properties of the insulating materials prepared in Example and Example 2 are better, and the specific test results can be seen in Table 1, where the thickness of the insulating material layer is 2mm:

[0041] Table 1

[0042] group Exterior Tensile Strength (N / mm 2 ) Elongation at break (%) 200℃ thermal stability time (min) Volume resistivity×10 -15 (Ω·cm) Oxygen Index Example 1 Good plasticization, uniform color and no impurities 18.6 497 >180 2.49 32.3 Example 2 Good plasticization, uniform color and no impurities 18.7 493 >180 2.51 32.7

[0043] 2. Corrosion resistance test: soak the test material in 10% sodium chloride solution for 100 days, and determine the main performance parameters, see Table 2: The test material is soaked in 10% sulfuric acid solution for 1...

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Abstract

The present invention belongs to the field of power materials, and discloses an insulating material for a power distribution system. The insulating material is prepared from the following raw materials: hydrogenated nitrile rubber, polyvinyl chloride, ethylene-propylene-diene rubber, polypropylene resin, triallyl cyanurate, aluminium nitride, egg shells, attapulgite, stearic acid, zinc borate, fiberglass, borax, triphenyl phosphate, oleamide, magnesium oxide, and aluminium hydroxide. The insulating material disclosed by the present invention is good in flame retardancy, excellent in mechanical properties and good in anti-corrosive property, and thus is suitable for making a cable insulation layer. In addition, the insulating material is used in a wide range, so that the service life of the cable is prolonged.

Description

technical field [0001] The invention belongs to the field of electric power materials, and in particular relates to an insulating material for power distribution systems. Background technique [0002] The power distribution system refers to the section of the power system that is exported from the step-down distribution substation (high voltage distribution substation) to the user end as the power distribution system. The power distribution system is a power network system composed of various power distribution equipment (or components) and power distribution facilities to transform voltage and directly distribute electrical energy to end users. [0003] Cables are an important part of the power distribution system. In recent years, with the increasing development and popularization of wires and cables in production and life, the demand for wires and cables has increased rapidly, and with the development of the economy, the requirements for their materials are also increas...

Claims

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Application Information

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IPC IPC(8): C08L15/00C08L27/06C08L23/16C08L23/12C08K13/06C08K5/20C08K5/3492C08K7/14C08K3/28C08K5/09C08K3/38C08K5/523C08K3/22H01B3/28H01B7/295
Inventor 杨文涛曹政秦承胜王明强杨法伟王倩倩
Owner STATE GRID SHANDONG ELECTRIC POWER
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