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Material for fireproof sealing of cable entry

A cable entry, fire-proof and flame-retardant technology, which is applied in the direction of fire-proof paint, conductive paint, coating, etc., can solve the problems of damaged components in the box, lack of density, flow collapse, etc.

Active Publication Date: 2021-07-06
STATE GRID FUJIAN ELECTRIC POWER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once there is a fire hazard, the flames entering the box will cause damage to the components in the box, causing failures and even serious accidents. Therefore, the problem of fire protection in the power system deserves special attention. Common fireproof mud is usually used to block the incoming and outgoing cables of screens, power distribution cabinets and other devices, but this material will soften in summer or when exposed to heat, and will shrink to form cracks when the temperature is low. For a long time, there are gaps between the cables, and it is difficult to do a good job of sealing, and the fireproof mud also has defects such as irregular shape, flow collapse, cracks, and non-compactness, which pose great hidden dangers
[0003] In response to the above problems, a new type of intumescent fireproof coating has appeared on the market. It is the same as ordinary coating film at room temperature. Under the action of flame or high temperature, the coating will expand to form a non-flammable porous carbon layer, which can slow down Or cut off the heating of the fire source to the base material, so as to achieve the effect of flame retardancy; but there are still problems such as not obvious fire prevention effect and short flame resistance time, especially in power system applications, there are still problems such as poor antistatic effect

Method used

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  • Material for fireproof sealing of cable entry
  • Material for fireproof sealing of cable entry
  • Material for fireproof sealing of cable entry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A material suitable for fire-proof and flame-retardant sealing of cable inlets in substations. The raw materials include: by weight, 100 parts of ethylene-vinyl acetate copolymer (EVA), 20 parts of maleic anhydride grafted polypropylene, tung oil 30 parts, 10 parts of graphene nanofiber, 6 parts of azodicarbonamide (AC), 14 parts of antimony trioxide, 6 parts of dibenzoyl peroxide, 9 parts of stearic acid, 8 parts of octyl epoxy soybean oleate share.

[0018] The specific preparation method is as follows: adding graphene nanofibers into concentrated sulfuric acid and stirring at 60°C for 1 to 3 hours to obtain acidified graphene nanofibers; grafting EVA, maleic anhydride to polypropylene, tung oil, and acidifying Graphene nanofibers, epoxy octyl soybean oleate, and stearic acid were added to an internal mixer and banburyed at 100°C for 10 minutes. After mixing evenly, azodicarbonamide, antimony trioxide and diperoxide were added. Benzoyl, after banburying for 5 minutes...

Embodiment 2

[0020] A material suitable for fire-proof and flame-retardant plugging of cable inlets in substations. The raw materials include: 110 parts by weight of ethylene-vinyl acetate copolymer (EVA), 40 parts of maleic anhydride grafted polypropylene, tung oil 40 parts, 15 parts of graphene nanofiber, 6 parts of azodicarbonamide (AC), 13 parts of antimony trioxide, 5 parts of dibenzoyl peroxide, 10 parts of stearic acid, 10 parts of epoxy octyl soybean oleate share.

[0021] The specific preparation method is as follows: adding graphene nanofibers into concentrated sulfuric acid and stirring at 60°C for 1 to 3 hours to obtain acidified graphene nanofibers; grafting EVA, maleic anhydride to polypropylene, tung oil, and acidifying Graphene nanofibers, epoxy octyl soybean oleate, and stearic acid were added to an internal mixer and banburyed at 100°C for 10 minutes. After mixing evenly, azodicarbonamide, antimony trioxide and diperoxide were added. Benzoyl, after banburying for 5 minut...

Embodiment 3

[0023] A material suitable for fire-proof and flame-retardant plugging of cable inlets in substations. The raw materials include: by weight, 120 parts of ethylene-vinyl acetate copolymer (EVA), 50 parts of maleic anhydride grafted polypropylene, tung oil 50 parts, 15 parts of graphene nanofiber, 10 parts of azodicarbonamide (AC), 20 parts of antimony trioxide, 9 parts of dibenzoyl peroxide, 10 parts of stearic acid, 10 parts of epoxy octyl soybean oil share.

[0024] The specific preparation method is as follows: adding graphene nanofibers into concentrated sulfuric acid and stirring at 60°C for 1 to 3 hours to obtain acidified graphene nanofibers; grafting EVA, maleic anhydride to polypropylene, tung oil, and acidifying Graphene nanofibers, epoxy octyl soybean oleate, and stearic acid were added to an internal mixer and banburyed at 150°C for 10 minutes. After mixing evenly, azodicarbonamide, antimony trioxide and diperoxide were added. Benzoyl, after banburying for 5 minute...

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Abstract

The invention belongs to the technical field of polymer materials, and in particular relates to a material for fireproof sealing of cable inlets. Its raw materials include: by weight, 100-120 parts of ethylene-vinyl acetate copolymer (EVA), 20-50 parts of maleic anhydride grafted polypropylene, 20-50 parts of tung oil, and 10-20 parts of graphene nanofibers , Azodicarbonamide (AC) 5-10 parts, flame retardant 10-20 parts, initiator 5-9 parts, stearic acid 8-12 parts, epoxy soybean octyl 8-12 parts. The material of the present invention has the characteristics of high closed cell rate, good temperature resistance, small compression deformation, excellent flame retardancy and antistatic performance, and is suitable for electric field packaging, especially for fireproof sealing of cable inlets in substations use.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a material for fireproof sealing of cable inlets. Background technique [0002] With the rapid development of my country's electric power in recent years, there are increasingly higher requirements for ensuring the safe operation of the power system and improving the economic benefits of the system, especially for the protection of various terminal boxes, control panels, power distribution cabinets and other devices. Once there is a fire hazard, the flames entering the box will cause damage to the components in the box, causing failures and even serious accidents. Therefore, the problem of fire protection in the power system deserves special attention. Common fireproof mud is usually used to block the incoming and outgoing cables of screens, power distribution cabinets and other devices, but this material will soften in summer or when exposed to heat, and wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C09D123/08C09D151/06C09D5/18C09D5/24C09D7/63C09D7/65
CPCC08K2201/011C08L2201/02C08L2201/04C08L2203/202C08L2205/03C09D5/18C09D5/24C09D123/0853C09D7/63C09D7/65C08L51/06C08L91/00C08K13/06C08K9/02C08K7/06C08K5/1515C08K5/09C08K3/2279
Inventor 蔡梦洁黄志东陈闽江
Owner STATE GRID FUJIAN ELECTRIC POWER CO LTD
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