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Conductive material based on gamma-C2S and preparation method of conductive material

A technology of conductive materials and conductive phases, applied in the field of γ-C2S-based conductive materials and its preparation, can solve the problems of reducing the continuity of the conductive network and conductive performance, high time dependence of impermeability, and poor matrix volume stability , achieve the effects of shortening the production cycle, fast development of mechanical strength, and high compactness of the matrix

Active Publication Date: 2019-03-15
山东汉博昱洲新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The strength development mechanism of traditional conductive cement-based materials is based on cement hydration and hardening, which has problems such as slow strength development, poor matrix volume stability, and high time dependence of impermeability.
At the same time, the existence of a large number of amorphous gel products in the hydration matrix is ​​prominent in the wrapping of the conductive phase, which significantly reduces the continuity and conductivity of the conductive network, thereby inhibiting the application of conductive cement-based materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A γ-C based 2 The conductive material of S, its raw material and volume parts are: γ-C 2 65 parts of S, 30 parts of water, 5 parts of carbon black.

[0021] The specific preparation method is: first γ-C 2 S and carbon black are mixed thoroughly on a ball mill for 1 hour, then take out the mixture and add water to mix it evenly to obtain a wet material, and then put the wet material in a stainless steel carbonization mold for compression molding to obtain a disc with a diameter of 20 mm and a thickness of 2 mm Shape green body, forming pressure 100MPa, pressing time 2min, put the prepared green body into the carbonization box filled with carbon dioxide (purity is 99.8%) immediately to carry out carbonization, carbonization pressure is 3MPa, carbonization time 2h, get based on γ-C 2 For S conductive material, evenly coat both sides of the material with silver paste, dry and prepare for resistance test.

[0022] After testing, the γ-C based 2 The conductive material pr...

Embodiment 2

[0024] A γ-C based 2 The conductive material of S, its raw material and volume parts are: γ-C 2 60 parts of S, 30 parts of water, 10 parts of carbon black.

[0025] The specific preparation method is: first γ-C 2 S and carbon black are mixed thoroughly on a ball mill for 1 hour, then take out the mixture and add water to mix it evenly to obtain a wet material, and then put the wet material in a stainless steel carbonization mold for compression molding to obtain a disc with a diameter of 20 mm and a thickness of 2 mm shape green body, molding pressure 100MPa, pressing time 2min, put the prepared green body into a carbonization box filled with carbon dioxide immediately for carbonization, carbonization pressure 3MPa, carbonization time 2h, get the γ-C 2 For S conductive material, evenly coat both sides of the material with silver paste, dry and prepare for resistance test.

[0026] After testing, the γ-C based 2 The conductive material properties of S are: 2-hour compressiv...

Embodiment 3

[0028] A γ-C based 2 The conductive material of S, its raw material and volume parts are: γ-C 2 60 parts of S, 30 parts of water, 10 parts of carbon black.

[0029] The specific preparation method is: first γ-C 2 S and carbon black are mixed thoroughly on a ball mill for 1 hour, then take out the mixture and add water to mix it evenly to obtain a wet material, and then put the wet material in a stainless steel carbonization mold for compression molding to obtain a disc with a diameter of 20 mm and a thickness of 2 mm shape green body, molding pressure 200MPa, pressing time 2min, put the prepared green body into a carbonization box filled with carbon dioxide immediately for carbonization, carbonization pressure 3MPa, carbonization time 2h, get the γ-C 2 For S conductive material, evenly coat both sides of the material with silver paste, dry and prepare for resistance test.

[0030] After testing, the γ-C based 2 The conductive material properties of S are: 2-hour compressiv...

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Abstract

The invention relates to a conductive material based on gamma-C2S and a preparation method of the conductive material. The conductive material comprises the following raw materials by volume percentage: 60-65% of gamma-C2S, 30% of water and 5-10% of conductive phase. The conductive material taking gamma-C2S as a matrix takes a carbonization reaction as a cementing and hardening mechanism of the matrix; the matrix mainly comprises calcium carbonate and silica gel; the conductive phase is distributed uniformly in the matrix; and the conductive material has the advantages of rapid mechanical strength development, high matrix compaction rate, high conductivity, excellent durability and the like.

Description

technical field [0001] The invention belongs to the technical field of functional building materials, and relates to a γ-C based 2 Conductive material of S and preparation method thereof. Background technique [0002] Conductive cement-based material is a functional building material that improves its electrical conductivity by introducing a conductive medium into the cement hydration hardening body. Conductive cement-based materials can replace metals to shield radio fields and electromagnetic waves. They can use conduction to generate thermal effects for building heating, road melting and snow melting, and can also be used for non-destructive inspection and evaluation of concrete structures. [0003] Traditional conductive cement-based materials all use cement hydration and hardening as the matrix’s strength development mechanism, which has problems such as slow strength development, poor matrix volume stability, and high time-dependence of impermeability. At the same ti...

Claims

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Application Information

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IPC IPC(8): C04B30/00C04B111/94
CPCC04B30/00C04B2111/94C04B2201/50C04B14/36C04B14/022C04B14/026
Inventor 刘志超王发洲周雄穆元冬何永佳
Owner 山东汉博昱洲新材料有限公司
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