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Fireproof cable seal and preparation method thereof

A technology for fireproof cables and preparation steps, which is applied in the field of fireproof cable plugging and its preparation, which can solve the problems of inability to prevent fire spread and low melting point of rubber, and achieve the goal of avoiding product phase decline, easy to disperse, and not easy to be destroyed Effect

Inactive Publication Date: 2019-03-01
杭州博源电力设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The principle is to put the rubber plugging head into the cable tube, and then tighten the bolts of the connector to force the flexible seal to deform. In the inner wall of the cable tube, a seal is formed inside and outside the cable tube, which solves the problems of water resistance, moisture resistance, corrosion resistance, insect resistance, and long validity period. However, the melting point of rubber is low, which cannot prevent the spread of fire very well.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: Preparation of flame retardant particles 1:

[0028] The preparation method step of this implementation is as follows:

[0029] Firstly, the raw materials were weighed in the following parts by weight: 50 parts of magnesium hydroxide, 30 parts of microcrystalline cellulose, 20 parts of aluminum oxide, 30 parts of silicon carbide, 6 parts of platinum compound, 7 parts of potassium nitrate, and 7.5 parts of povidone.

[0030] Prepare the inner core: dry potassium nitrate powder and magnesium hydroxide powder at 60°C for 20 minutes, mix them with silicon carbide, aluminum oxide, and platinum compounds evenly, add deionized water to prepare a paste with a water content of 20%, and then Add povidone, mix well, and stir at 70°C at a rate of 600rpm until the water content is 5%, then pass through a 400-mesh sieve to obtain wet granules, and dry the obtained wet granules at a temperature of 100°C for 1 hour to obtain For dry granules, put the dry granules into a gra...

Embodiment 2

[0032] Embodiment 2: Preparation of flame retardant particles two:

[0033] The preparation method step of this implementation is as follows:

[0034] Firstly, the raw materials were weighed in the following parts by weight: 60 parts of magnesium hydroxide, 35 parts of microcrystalline cellulose, 10 parts of aluminum oxide, 20 parts of silicon carbide, 10 parts of platinum compound, 5 parts of potassium nitrate, and 7 parts of povidone.

[0035] Prepare the inner core: after drying potassium nitrate powder and magnesium hydroxide powder at 60°C for 30 minutes, mix them with silicon carbide, aluminum oxide, and platinum compounds evenly, add deionized water to prepare a paste with a water content of 25%, and then Add povidone, mix evenly, and stir at 75°C at a rate of 500rpm until the water content is 6%, then pass through a 325 mesh sieve to obtain wet granules, and dry the obtained wet granules at a temperature of 100°C for 1.5h The dry granules are obtained, and the dry gra...

Embodiment 3

[0037] Example 3: Preparation of flame retardant particles three:

[0038] The preparation method step of this implementation is as follows:

[0039] First, the raw materials were weighed in the following parts by weight: 55 parts of magnesium hydroxide, 40 parts of microcrystalline cellulose, 15 parts of aluminum oxide, 40 parts of silicon carbide, 5 parts of platinum compound, 10 parts of potassium nitrate, and 8.3 parts of povidone.

[0040] Prepare the inner core: dry potassium nitrate powder and magnesium hydroxide powder at 60°C for 30 minutes, mix them with silicon carbide, aluminum oxide, and platinum compounds evenly, add deionized water to prepare a paste with a water content of 30%, and then Add povidone, mix evenly, and stir at 80°C at a rate of 400rpm until the water content is 8%, then pass through a 270-mesh sieve to obtain wet granules, and dry the obtained wet granules at a temperature of 100°C for 2 hours to obtain For dry granules, put the dry granules into...

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Abstract

The invention discloses a fireproof cable seal and a preparation method thereof, belonging to the technical field of cable seals. The fireproof cable seal is prepared from the following raw materials:silicone rubber, flame-retardant particles, antimony trioxide, hydroxyl silicone oil and a vulcanization accelerator; the preparation method comprises the steps of mixing the raw materials for preparing the cable seal; blending, and then extruding for molding to obtain the fireproof cable seal; the flame-retardant particles are prepared from the following raw materials: magnesium hydroxide, microcrystalline cellulose, alumina, silicon carbide, a platinum compound and potassium nitrate; after an inner core is prepared, the microcrystalline cellulose is modified with a silane coupling agent, and a shell is formed on the surface of the inner core; the prepared seal not only has higher quality, but also has excellent fireproof performance and prolongs the fire protection time.

Description

technical field [0001] The invention relates to the technical field of cable plugging, in particular to a fireproof cable plugging and a preparation method thereof. Background technique [0002] In recent years, with the acceleration of power grid construction and the wide application of distribution cable lines, many problems have been exposed in the plugging of the outlet of the cable protection tube. The safe operation of the line poses hidden dangers to equipment and personal safety. Therefore, according to the actual situation, when the cables pass through flammable, explosive, high-temperature and other areas with fire hazards, fire-resistant separation of cables should be implemented. Traditional fireproof sealing materials and construction basically use fireproof bags, fireproof mud, fireproof coating boards, inorganic blockages, etc. as fireproof sealing materials, and fill the required parts. Problems are gradually exposed during use. Traditional materials and co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08L1/04C08K13/06C08K9/10C08K7/18C08K3/22
CPCC08L83/04C08L2201/02C08L2203/202C08L2205/025C08L1/04C08K13/06C08K9/10C08K7/18C08K3/2279
Inventor 李可心丁云天黄众李士华
Owner 杭州博源电力设备有限公司
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