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Sealing plugging material for electric power as well as preparation method and application thereof

A sealing plugging and electric power technology, which is applied in the field of electric power engineering, can solve problems such as poor expansion performance and high temperature resistance of sealing plugging materials, and achieve the effects of improving expansion performance, ensuring expansion uniformity, and inhibiting cracking

Pending Publication Date: 2021-06-11
STATE GRID ZHEJIANG ELECTRIC POWER CO LTD SHAOXING POWER SUPPLY CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the defects of high temperature resistance and poor expansion performance of the sealing and blocking materials in the prior art, the technical problem to be solved by the present invention is to provide a sealing and blocking material for electric power with high temperature resistance and high expansion performance.

Method used

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  • Sealing plugging material for electric power as well as preparation method and application thereof

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preparation example Construction

[0027] The present invention also provides a preparation method of the sealing and blocking material for electric power, comprising the following steps:

[0028] After the modified vermiculite, organic resin and reinforcing material are mixed evenly, the composite material is obtained by stirring and reacting at 170°C; the prepared composite material is ground and sieved, and the curing agent is added, mixed evenly, and placed in an oven at 180°C Inside, the cured sample was obtained.

[0029] The vermiculite modification method is to fully stir vermiculite and water in a container at a mass ratio of 1:10, add sodium chloride or hydrochloric acid, place it in a water bath at 70-75°C and stir for 2 hours, cool and suction filter, and use deionized Wash it with water several times, then activate it at 110°C for 2 hours with an electric constant temperature blast drying oven, grind it, and sieve it to make a modified vermiculite.

[0030] The modified vermiculite expands at high...

Embodiment 1

[0036] This embodiment provides a sealing and blocking material for electric power, which includes 85% phenolic resin, 8% unexpanded vermiculite, 5% 1, 4 butanediol, 2% cellulose fibers.

[0037] The preparation method of the above-mentioned sealing and blocking material for electric power comprises the following steps,

[0038] After the unexpanded vermiculite is sieved through 250 mesh, after being modified by HCL / NaCl, it is ground to a specific surface area of ​​350g / cm 2 The powder, modified vermiculite, organic resin and reinforcing material are mixed evenly, and then stirred and reacted at 170°C to obtain a composite material; the prepared composite material is ground and sieved, added a curing agent, mixed evenly, and placed in In an oven at 180°C, the cured sample was obtained.

Embodiment 2

[0040] This embodiment provides a sealing and blocking material for electric power, which includes 85% phenolic resin, 8% unexpanded vermiculite, 5% 1, 4 butanediol, 2% cellulose fibers.

[0041] The preparation method of the above-mentioned sealing and blocking material for electric power comprises the following steps,

[0042] Sieve the unexpanded vermiculite through 250 mesh, modify it with HCL / NaCl, expand it at 800°C, and grind it to a specific surface area of ​​350Kg / m2 with an expansion factor of 10 times 2 The powder, modified vermiculite, organic resin and reinforcing material are mixed evenly, and then stirred and reacted at 170°C to obtain a composite material; the prepared composite material is ground and sieved, added a curing agent, mixed evenly, and placed in In an oven at 180°C, the cured sample was obtained.

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Abstract

The invention discloses a sealing plugging material for electric power as well as a preparation method and application thereof. The sealing plugging material comprises a base material, a curing agent, a modifier and a reinforcing material, wherein the base material is a mixture of organic resin and an inorganic expansion mineral material; the reinforcing material is an organic reinforcing agent or an inorganic fiber material; modified vermiculite, organic resin and the reinforcing material are uniformly mixed, and then stirred and reacted at 170 DEG C to obtain a composite material; and the composite material is ground and sieved, the curing agent is added, the mixture is uniformly mixed, and placed in an oven at 180 DEG C to obtain a cured sample. The prepared sealing plugging material for electric power is used for plugging cable trenches and raise openings in transformer substations and converter stations. The expansion performance and the high temperature resistance of the material can be improved, and the requirement of the cable trench construction environment for the fireproof material is met.

Description

technical field [0001] The invention belongs to the technical field of electric power engineering, and in particular relates to a sealing and blocking material for electric power. Background technique [0002] Openings such as plugging of substations and converter stations, cable trenches, and patios require a large amount of sealing and blocking materials to fill. At room temperature, the sealing material can seal the cable and the sealing material to prevent moisture and small animals from entering the interior; when a fire occurs, the sealing material can expand to prevent the fire from spreading. [0003] In the field of fireproof blockage fortification, at present, UHV converter stations and substation fireproof material components are basically fortified according to the standard temperature rise curve. and other high polymer materials. Once the above-mentioned combustibles cause a fire, they have the characteristics of rapid heating, high temperature and difficult p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/06C08L75/04C08L1/02C08L67/00C08K9/02C08K3/34
CPCC08L61/06C08L75/04C08L2201/02C08L2201/08C08L2203/20C08K2201/006C08K2201/011C08L2205/16C08L1/02C08K9/02C08K3/34C08L67/00
Inventor 姚建立林祖荣朱晓晖王军慧姚建生连亦芳裘佳锋汤叶锋汪磊董继明张宇菁樊建锋
Owner STATE GRID ZHEJIANG ELECTRIC POWER CO LTD SHAOXING POWER SUPPLY CO
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