Electric protective casing and preparation method thereof

A technology for sheathing tubes and electric power, applied in the direction of plastic/resin/wax insulators, organic insulators, etc., can solve the problems of acid-base microbial corrosion, poor tensile and flexural strength, easy deformation and fracture, and achieve low cost and good durability Salt heat and cold resistance, good tensile strength effect

Inactive Publication Date: 2014-04-16
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defects of the existing electric power sheath tubes that are easily deformed and broken when exposed to extreme temperatures, easily corroded by acid-base microorganisms, poor tensile and flexural strength, and flammable; the invention discloses a new type of power sheath tube , the power sheath has good performance and can be widely used in industrial production

Method used

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  • Electric protective casing and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of electrical sheath pipe, it is prepared from the following raw materials by weight:

[0020] Barium titanate powder 1, aluminum nitride powder 1, chromium carbide powder 1, borax 1, talcum powder 1, calcium carbonate powder 1, silica gel 1, decabromodiphenylethane 3, stearic acid 6, starch ether 8, carapace Prime 12, polycarbonate 18, hydroxyethyl cellulose 25, polyvinyl alcohol 32, polyvinyl chloride 40.

[0021] The particle diameter of above-mentioned barium titanate powder, aluminum nitride powder, chromium carbide powder, borax, talcum powder and calcium carbonate powder is controlled at 400 orders;

[0022] The pore volume of silica gel is 0.6-0.8ml / g, the average pore diameter is 5.0-7.0nm, and the specific surface is 500-650m 2 / g.

[0023] The preparation method of the above-mentioned electric power sheathing tube includes the following steps:

[0024] (1) Take the above-mentioned raw materials according to parts by weight for subsequent use;

[00...

Embodiment 2

[0029] A kind of electrical sheath pipe, it is prepared from the following raw materials by weight:

[0030] Barium titanate powder 2, aluminum nitride powder 2, chromium carbide powder 2, borax 2, talcum powder 2, calcium carbonate powder 2, silica gel 2, decabromodiphenylethane 5, stearic acid 8, starch ether 10, carapace Primer 15, polycarbonate 20, hydroxyethyl cellulose 30, polyvinyl alcohol 36, polyvinyl chloride 45.

[0031] Among them, the particle size of barium titanate powder, aluminum nitride powder, chromium carbide powder, borax, talcum powder and calcium carbonate powder is controlled at 500 mesh.

[0032] The preparation method of the above-mentioned electric power sheathing tube includes the following steps:

[0033] (1) Take the above-mentioned raw materials according to parts by weight for subsequent use;

[0034] (2) Put barium titanate powder, aluminum nitride powder, chromium carbide powder, borax, talcum powder and calcium carbonate powder into the mix...

Embodiment 3

[0038] Measurement of various performance parameters of the electrical sheath pipe prepared by the present invention: the outer diameter is 100 mm, the wall thickness is 5 mm, and the length is 10 m as an example. Tensile strength, bending strength, bus hardness, thermal conductivity and oxygen index refer to GB / T1458, GB / T1449, GB / T3854, GB / T5990, GB / T8924 respectively. The specific results are shown in Table 1.

[0039] Table 1

[0040]

[0041] Salt resistance test: soak the electrical sheath pipe in 10% sodium chloride solution for 30 days, the tensile strength decreased by only 1%, the bending strength decreased by 3%, and the bus hardness decreased by 2%.

[0042] Heat resistance test: put the test sample into boiling water and boil for 1 hour, no deformation and foaming occurs, and more than 90% of tensile strength, bending strength and bus hardness remain, which has good heat resistance.

[0043] Cold resistance test: Put the test sample at -50°C for 60 days, no c...

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Abstract

The invention belongs to the field of electric materials, and discloses an electric protective casing. The electric protective casing is prepared from the following raw materials in parts by weight: 2 parts of barium titanate powder, 2 parts of aluminum nitride, 2 parts of chromium carbide powder, 2 parts of borax, 2 parts of talc powder, 2 parts of calcium carbonate powder, 2 parts of silica gel, 5 parts of decabromodiphenylethane, 8 parts of stearic acid, 10 parts of starch ether, 15 parts of chitin, 20 parts of polycarbonate, 30 parts of hydroxyethyl cellulose, 36 parts of polyvinyl alcohol, and 45 parts of polyvinyl chloride. The invention also discloses a preparation method of the electric protective casing. The electric protective casing prepared by the method has good tensile strength, bending strength, barcol hardness, import coefficient, oxygen index and salt-resistance, heat-resistance and cold-resistance, can be applied to various extreme environments, and has a good application prospect.

Description

technical field [0001] The invention belongs to the field of power materials, and specifically discloses a power sheath tube and a preparation method thereof. Background technique [0002] The power sheath tube is a heat shrinkable tube commonly used for insulation protection on cables. The main material of this type of product is PE. After two processes of irradiation crosslinking and heating expansion, it has the function of heat shrinkage, and the shrinkage ratio is 3:1. Left and right, with diameters ranging from 50-350mm, can be used as heat-shrinkable inner sheaths, outer sheaths, and outer insulating and waterproof sheath tubes in cable accessories. The main purpose of the power sheath tube is to be used as a cable sheath to protect the cable from external damage and ensure the safety of electricity use. The power sheath tube is divided into buried type and above-ground type. In the last century, sheath tubes made of metal materials were generally used to protect cab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L29/04C08L1/26C08L69/00C08L5/08C08L3/08C08K13/02C08K3/24C08K3/28C08K3/14C08K3/38C08K3/34C08K3/26C08K5/03C08K5/09H01B3/44
Inventor 陈志勇徐进化晨冰何健张晓磊杜鹏
Owner STATE GRID CORP OF CHINA
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