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Preparation method of Bucky paper/fly ash wear-resistant ceramic patch

A technology of wear-resistant ceramics and bucky paper, which is applied to clay products, other household utensils, and the addition of inorganic compounds. It can solve the problems of high installation fit and low cost performance of hard and brittle workpieces, and achieve good toughness and improvement. Hard and brittle, wide applicability

Active Publication Date: 2022-07-29
国家电投集团江西中业兴达电力实业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]At present, the mainstream wear-resistant ceramic patch components in the market are zirconia and alumina. In addition to the extremely high requirements on the fit of the workpiece installation, the cost performance is relatively low

Method used

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  • Preparation method of Bucky paper/fly ash wear-resistant ceramic patch

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Put bucky paper with a purity of 99% and a thickness of 0.2 mm into a mixture of concentrated nitric acid and concentrated sulfuric acid with a volume ratio of 1:3, and reflux at 80°C for 4 hours to obtain carboxylated bucky paper.

[0023] (2) Add the carboxylated bucky paper obtained in step (1) to an aluminum nitrate solution with a concentration of 15 wt. % and ultrasonically for 15 min, with an ultrasonic power of 160 W.

[0024] (3) According to the mass ratio of aluminum nitrate solution and dopamine 0.15:1, dopamine is added to the aluminum nitrate solution in step (2), and then ultrasonication is continued for 20min, and the ultrasonic power is 160W.

[0025] (4) Add TRIS buffer to the solution obtained in step (3) to adjust the pH value to 8, continue to sonicate for 4 hours, and then take out the bucky paper to dry.

[0026] (5) Mix 10 vol.% ethyl orthosilicate, 10 vol.% alumina sol (alumina content of 22 wt.%), and 80 vol.% micro-nano fly ash into a coll...

Embodiment 2

[0031] (1) Put bucky paper with a purity of 99% and a thickness of 0.15 mm into a mixture of concentrated nitric acid and concentrated sulfuric acid with a volume ratio of 1:3, and reflux at 80 °C for 4 hours to obtain carboxylated bucky paper.

[0032] (2) Add the carboxylated bucky paper obtained in step (1) to an aluminum nitrate solution with a concentration of 20 wt.% and ultrasonically for 15 min, with an ultrasonic power of 150W.

[0033] (3) According to the mass ratio of aluminum nitrate solution and dopamine 0.2:1, dopamine is added to the aluminum nitrate solution in step (2), and then ultrasonication is continued for 30min, and the ultrasonic power is 150W.

[0034] (4) Add TRIS buffer to the solution obtained in step (3) to adjust the pH value to 9, continue to sonicate for 3 hours, and then take out the bucky paper to dry.

[0035] (5) Mix 15 vol.% ethyl orthosilicate, 10 vol.% alumina sol (alumina content of 23 wt.%), and 75 vol.% micro-nano fly ash to form a ge...

Embodiment 3

[0040] (1) Put bucky paper with a purity of 99% and a thickness of 0.2 mm into a mixture of concentrated nitric acid and concentrated sulfuric acid with a volume ratio of 1:3, and reflux at 80°C for 4 hours to obtain carboxylated bucky paper.

[0041] (2) Add the carboxylated bucky paper obtained in step (1) to an aluminum nitrate solution with a concentration of 25 wt. % and ultrasonically for 15 min, with an ultrasonic power of 170 W.

[0042] (3) According to the mass ratio of aluminum nitrate solution and dopamine 0.1:1, dopamine is added to the aluminum nitrate solution in step (2), and then ultrasonication is continued for 25min, and the ultrasonic power is 170W.

[0043] (4) Add TRIS buffer to the solution obtained in step (3) to adjust the pH value to 9, continue to sonicate for 5 hours, and then remove the bucky paper to dry.

[0044] (5) Mix 5 vol.% ethyl orthosilicate, 10 vol.% alumina sol (alumina content of 21 wt.%), and 85 vol.% micro-nano fly ash into a gel, and...

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Abstract

The invention relates to a preparation method of a Bucky paper / fly ash wear-resistant ceramic patch, which comprises the following steps: carrying out conventional carboxylation on Bucky paper, soaking the Bucky paper in a dopamine aluminum nitrate solution, and carrying out ultrasonic treatment; preparing a colloid from tetrabutyl orthosilicate, alumina sol and micro-nano fly ash, then brushing the colloid on the bottom layer of the steel mold plate, then paving the obtained Bucky paper on the colloid, and repeating for 3-5 times to form a fly ash / Bucky paper interlayer material; performing extrusion forming on the interlayer material, and then drying to obtain a green body; sintering the green body in a high-temperature vacuum environment or an inert gas protection environment, and cooling the green body to room temperature along with a furnace to obtain the Bucky paper / fly ash wear-resistant ceramic patch. The method has the advantages of being simple, safe, easy to operate, controllable and the like. Compared with the traditional chemical plating, the prepared ceramic patch has the advantages that the interface adhesion is more superior; the hard brittleness of the ceramic wear-resistant sheet can be improved; and the customizability of the shape of the ceramic wear-resistant patch can be realized more easily.

Description

technical field [0001] The invention belongs to the technical field of material preparation. Background technique [0002] As a high-quality aluminosilicate raw material, mullite has excellent thermal stability, mechanical strength, electrical and optical properties, and is widely used in the field of functional ceramics. As an industrial waste, fly ash is mainly composed of alumina and silica, which are suitable for mullite synthesis raw materials. According to some academic papers, the rational use of its components in composite materials can significantly improve the wear resistance or mechanical properties of composite materials. However, its shortcomings are also obvious. The pure ceramic structure indicates that it has extremely poor toughness and exhibits hard, brittle and easy cracking when its toughness is not optimized. It limits its application in the field of surface wear-resistant materials. Bucky paper, on the other hand, has excellent breaking strength as w...

Claims

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Application Information

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IPC IPC(8): C04B35/565C04B35/18C04B33/132C04B33/135C04B33/36C04B35/622C04B35/80D21H17/66
CPCC04B35/565C04B35/18C04B35/80C04B35/62204C04B33/1352C04B33/1328C04B33/36D21H17/66C04B2235/77C04B2235/96
Inventor 饶光华陈乐诸建彬王松宁昌和施一鸣潜江袁凯东刘鹏罗毅明涂启明赵宏刘江
Owner 国家电投集团江西中业兴达电力实业有限公司