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Fireproof plate for cable trench and preparation method thereof

A fireproof board and cable trench technology, applied in the field of electric power engineering, can solve the problems of poor toughness and high temperature resistance of the fireproof partition board of the cable trench, and achieve the effects of improving the early strength, low cost and reducing the utilization of waste resources.

Pending Publication Date: 2021-06-01
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

[0004] In order to overcome the defects of high temperature resistance and poor toughness of the cable trench fireproof partition board in the prior art, the technical problem to be solved by the present invention is to provide a kind of fireproof board for cable trench and its preparation method, so that the cable trench fireproof partition board has Advantages of high temperature resistance and high toughness

Method used

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  • Fireproof plate for cable trench and preparation method thereof

Examples

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Effect test

Embodiment 1

[0031] This embodiment provides a high-temperature-resistant fireproof board, which includes 40% of floating beads, 20% of slag, 15% of sinking beads, and 25% of potassium silicate based on the total mass of the gel material and the skeleton material.

[0032] The preparation method of the above-mentioned high temperature resistant fireproof board comprises the following steps,

[0033] After the fly ash is sieved through 50-70 mesh, the floating beads and sinking beads with the required particle size can be obtained. Crush the sinking beads and slag sand until the specific surface area is 500Kg / cm 2 powder, and then mixed with floating beads evenly for later use. The required water glass is dissolved in water to prepare a water-to-glass solution, wherein the water-binder ratio of the gel material to water is 0.35. The cementitious material is put into the prepared solution and stirred to obtain a slurry, then molded, cured at 180°C and 0.6MPa for 16 hours, and then shaped t...

Embodiment 2

[0035] This embodiment provides a high-temperature-resistant fireproof board, which includes 35% of floating beads, 5% of basalt fibers, 20% of slag, 15% of sinking beads, and 25% of potassium silicate.

[0036] The preparation method of the above-mentioned high temperature resistant fireproof board comprises the following steps,

[0037] After the fly ash is sieved through 50-70 mesh, the floating beads and sinking beads with the required particle size can be obtained. Crush the sinking beads and slag sand until the specific surface area is 500Kg / cm 2 powder, and then mixed with floating beads evenly for later use. The required water glass is dissolved in water to prepare a water glass solution, wherein the water-binder ratio of the gel material to water is 0.35. The cementitious material is put into the prepared solution and stirred to obtain a slurry, then molded, cured at 180°C and 0.6MPa for 16 hours, and then shaped to obtain a high-temperature resistant fireproof boa...

Embodiment 3

[0039] This embodiment provides a high temperature resistant fireproof board, based on the total mass of gel material and skeleton material, including 35% floating beads, 5% cellulose fibers, 20% slag, 15% sinking beads, 25% potassium silicate.

[0040] The preparation method of the above-mentioned high temperature resistant fireproof board comprises the following steps,

[0041] After the fly ash is sieved through 50-70 mesh, the floating beads and sinking beads with the required particle size can be obtained. Crush the sinking beads and slag sand until the specific surface area is 500Kg / cm 2 powder, and then mixed with floating beads evenly for later use. The required water glass is dissolved in water to prepare a water glass solution, wherein the water-binder ratio of the gel material to water is 0.35. The cementitious material is put into the prepared solution and stirred to obtain a slurry, then molded, cured at 180°C and 0.6MPa for 16 hours, and then shaped to obtain ...

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Abstract

The invention discloses a fireproof plate for a cable trench and a preparation method of the fireproof plate. The raw materials of the fireproof plate comprise a gel material and a framework material, wherein a molar ratio of CaO to SiO2 in the gel material is 0.8-1.2; and the framework material is an inorganic material with a hollow structure, and the content of the framework material is 40-60 wt% based on the total mass of the gel material and the framework material. The preparation method comprises the following steps: uniformly mixing all the raw materials, adding water to obtain slurry, and filling a mold with the slurry; and putting the mold into a still kettle for steaming and pressing to obtain the high-temperature-resistant fireproof plate. According to the invention, the calcium-silicon ratio in the gel material is controlled, so the gel material can be fully hydrated to generate fibrous xonotlite, and thus, the toughness of the fireproof plate is improved; the breaking strength of the material is further improved through fibers; and the heat conductivity of the plate can be greatly reduced by controlling the framework material to be of the hollow structure.

Description

technical field [0001] The invention belongs to the technical field of electric power engineering, and in particular relates to a fireproof partition board for cable trenches. Background technique [0002] Control cables and power cables are stored in the cable trenches of substations and converter stations. The control cable and the power cable need to be separated by a fireproof board. The fire separation of cable trenches needs to have two basic functions: first, it can prevent fire from spreading; second, it has certain mechanical strength and toughness, so as to facilitate maintenance and construction. [0003] At present, cable fire incidents occur frequently, which conforms to the combustion characteristics of electric fire, and the temperature can be raised to 1100°C in a short time. Most of the fireproof boards are made of FRP, silicon-calcium board and other materials. Although FRP has excellent toughness and mechanical strength, its combustion performance is cla...

Claims

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Application Information

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IPC IPC(8): C04B28/26C04B18/14C04B14/46C04B18/08C04B111/28
CPCC04B28/26C04B14/465C04B18/141C04B18/08C04B18/082C04B2111/28C04B2201/50Y02W30/91
Inventor 林祖荣姚建立朱晓晖王军慧姚建生连亦芳裘佳锋汤叶锋汪磊黄荣正周少聪
Owner STATE GRID ZHEJIANG ELECTRIC POWER CO LTD SHAOXING POWER SUPPLY CO