A sound-absorbing and noise-reducing porous ceramic used in substations

A technology of porous ceramics and substations, applied in ceramic products, applications, household appliances, etc., can solve problems such as air pollution, low sound absorption coefficient in low frequency areas, toxicity, etc., achieve no toxic gas emissions, avoid human injury, and have a wide range of applications Effect

Active Publication Date: 2022-06-24
STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JINHUA POWER SUPPLY CO +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the copolymer of gelling agent isobutylene and maleic anhydride, and polyacrylic acid ammonium or tetramethylammonium hydroxide, all have certain toxicity, are not suitable for large-scale popularization; In the article "Research on Plant Gum and Performance", plant glue is used as gel, which has environmental protection effect, but expensive raw materials such as Boluo stone grains, Panyu black mud, Meizhou stone powder are used, which are not suitable for large-scale application; the application number is CN201110370562 The invention patent of .1 discloses a ceramic material with sound-absorbing and plant-cultivating functions and its preparation method. The sound-absorbing ceramic material has a certain refractoriness and sound-absorbing coefficient, but a large amount of organic or even toxic additives are used in the raw materials. During the preparation process, it will not only cause air pollutio

Method used

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  • A sound-absorbing and noise-reducing porous ceramic used in substations
  • A sound-absorbing and noise-reducing porous ceramic used in substations
  • A sound-absorbing and noise-reducing porous ceramic used in substations

Examples

Experimental program
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Effect test

Embodiment 1

[0041] A sound-absorbing and noise-reducing porous ceramic for a substation, the preparation of which comprises the following steps:

[0042] S1: mixing of raw materials: mixing 5g kaolin, 3g clay, and 2g mica powder to obtain a binder A, and then mixing the binder, 10g albite and 15g commercial alumina to obtain a mixed powder a with a total amount of 35g;

[0043] S2: Slurry preparation: add 28g of deionized water to the mixed powder a and mix to obtain a slurry with a solid content of 55.56%, add 0.14g of dispersant sodium hexametaphosphate and gelling agent B to the slurry, this implementation In the example, the gelling agent B includes 0.056g konjac flour and 0.196g K-type carrageenan, and is ball-milled for 4h at a rotational speed of 250 rpm to obtain slurry b;

[0044] S3: Foaming injection molding: put the slurry b in a ball milling tank, and mill it for 8 hours, then add 014 g of foaming agent C sodium lauryl sulfate to the slurry B, and continue the ball milling fo...

Embodiment 2

[0051] A sound-absorbing and noise-reducing porous ceramic for a substation, the preparation of which comprises the following steps:

[0052] S1: Mixing of raw materials: Mix 5g of kaolin, 3g of clay, and 3g of mica powder to obtain a binder A, and then mix the binder, 11g of albite and 16.5g of commercial alumina to obtain a mixed powder with a total amount of 38.5g a;

[0053] S2: Slurry preparation: add 28g of deionized water to the mixed powder a and mix to obtain a slurry with a solid content of 57.89%, add 0.14g of dispersant sodium hexametaphosphate and gelling agent B to the slurry, this implementation In the example, the gelling agent B includes 0.056g konjac flour and 0.196g K-type carrageenan, and is ball-milled for 5h at a rotational speed of 250 rpm to obtain slurry b;

[0054] S3: Foaming injection molding: put the slurry b in a ball milling tank, ball mill for 8 hours, then add 0.14g of foaming agent C sodium lauryl sulfate to the slurry B, and continue ball mi...

Embodiment 3

[0058] A sound-absorbing and noise-reducing porous ceramic for a substation, the preparation of which comprises the following steps:

[0059] S1: mixing of raw materials: mixing 5g kaolin, 2g clay, and 3g mica powder to obtain a binder A, and then mixing the binder, 20g albite and 30g commercial alumina to obtain a mixed powder a with a total amount of 60g;

[0060]S2: Slurry preparation: add 48g of deionized water to the mixed powder a and mix to obtain a slurry with a solid content of 55.56%, add 0.24g of dispersant sodium hexametaphosphate and gelling agent B to the slurry, this implementation In the example, the gelling agent B includes 0.144g konjac flour and 0.384g K-type carrageenan, and is ball-milled for 3.5h at a rotational speed of 250 rpm to obtain slurry b;

[0061] S3: Foaming injection molding: put the slurry b in a ball milling tank, ball mill for 12 hours, then add 0.288g of foaming agent C sodium lauryl sulfate to the slurry B, and continue ball milling for 3...

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Abstract

The invention discloses a sound-absorbing and noise-reducing porous ceramic used in substations. Its preparation includes the following steps: S1: mixing an adhesive A, albite and commercial alumina to obtain a mixed powder a; S2: mixing the mixed powder a Add deionized water to mix, add dispersant and gelling agent B to the slurry, and ball mill at 250 rpm for 3~5h to obtain slurry b; S3: ball mill slurry b for 6~12h, then add foaming agent C, ball milling for 20-30 minutes, heating in a water bath at 80°C for 8-12 minutes, and pouring into a mold; S4: drying at room temperature for 4-6 hours, demoulding, and drying in an oven at 70°C for 5-8 hours to obtain green embryos; S5 : Heat up to 200°C at a speed of 3°C/min, keep warm for 30~40min, then raise the temperature to 1350~1450°C at a speed of 3~4°C/min, keep warm for 2~4min, then cool to room temperature with the furnace.

Description

technical field [0001] The invention relates to the technical field of functional ceramic materials, in particular to a sound-absorbing and noise-reducing porous ceramic for substations. Background technique [0002] Noise pollution has become a contemporary worldwide problem, and it is listed as the top three pollutions in the world together with water pollution and air pollution. , The aging of the mechanical structure will affect the accuracy and service life of the equipment and instruments. With the rapid development of industry and transportation, noise pollution is becoming more and more serious, especially in densely populated and economically developed large and medium cities, especially in the surrounding areas on both sides of expressways and railways, which has become a hot issue in the process of environmental governance. . The survey found that the residents living next to the highway, myocardial infarction rate increased by about 30%. [0003] Substations a...

Claims

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Application Information

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IPC IPC(8): C04B38/10C04B35/10C04B35/622H02B1/54
CPCC04B38/10C04B35/10C04B35/622H02B1/54C04B2235/3463
Inventor 赵寿生郭云鹏崔建业陈源清赵深陈晓刚孔晓峰周彪王斌毛航银丰佳何强赵凯美郑炅龚列谦易永利刘主光
Owner STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JINHUA POWER SUPPLY CO
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