Anti-cracking surface-grinded brick and preparation method thereof

A technology for surface grinding and anti-cracking of bricks, which can be applied to clay products, other household utensils, applications, etc., and can solve the problems of fine grains in finished products, dry cracks in adobes, high drying shrinkage and sintering shrinkage, etc.

Inactive Publication Date: 2018-04-06
FOSHAN HENGTAI HONGSHI CERAMIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The drying shrinkage rate and sintering shrinkage rate of the existing grinding bricks are relatively high, resulting in dry cracks in the adobe, and fine lines and invisible cracks in the finished product after sintering, resulting in a high loss rate of the finished product

Method used

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  • Anti-cracking surface-grinded brick and preparation method thereof
  • Anti-cracking surface-grinded brick and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Step A, according to the percentage by weight, 35% of pure acrylic emulsion, 20% of alkylketene modified cellulose, 5% of phosphate, 5% of polyvinyl alcohol, 15% of bentonite, 5% of polyacrylic acid emulsion and 15% of water, Disperse and grind at a high speed at room temperature until the fineness is 70 μm to obtain the anti-cracking agent;

[0025] Step B, according to weight percentage, mix 20% of plastic mud, 30% of whole body brick clinker particles of 10-15 mesh, 15% of vitrified brick clinker particles of 20-30 mesh, 32% of feldspar solvent and the anti-cracking 3% agent, add water and knead evenly to make mud;

[0026] In step C, the uniformly mixed mud in step B is made into mud granules by a screen granulator, and the mud granules are extruded by a vacuum extruder and cut into wet bricks, wherein the relative vacuum degree of the vacuum extruder is - 0.08~-0.1MPa, the moisture content of mud particles is 20%;

[0027] Step D, placing the extruded wet adobe o...

Embodiment 2

[0032] Step A, according to the percentage by weight, 35% of pure acrylic emulsion, 10% of alkyl ketene modified cellulose, 2% of phosphate, 3% of polyvinyl alcohol, 10% of bentonite, 5% of polyacrylic acid emulsion and 35% of water, Disperse and grind at a high speed at room temperature until the fineness is 70 μm to obtain the anti-cracking agent;

[0033] Step B, according to weight percentage, mix 20% of plastic mud, 30% of whole body brick clinker particles of 10-15 mesh, 15% of vitrified brick clinker particles of 20-30 mesh, 32% of feldspar solvent and the anti-cracking 3% agent, add water and knead evenly to make mud;

[0034] In step C, the uniformly mixed mud in step B is made into mud granules by a screen granulator, and the mud granules are extruded by a vacuum extruder and cut into wet bricks, wherein the relative vacuum degree of the vacuum extruder is - 0.08~-0.1MPa, the moisture content of mud particles is 20%;

[0035] Step D, placing the extruded wet adobe ...

Embodiment 3

[0040] Step A, according to the percentage by weight, 35% of pure acrylic emulsion, 20% of alkylketene modified cellulose, 5% of phosphate, 5% of polyvinyl alcohol, 15% of bentonite, 5% of polyacrylic acid emulsion and 15% of water, Disperse and grind at a high speed at room temperature until the fineness is 70 μm to obtain the anti-cracking agent;

[0041] Step B, according to weight percentage, mix 20% of plastic mud, 30% of whole body brick clinker particles of 10-15 mesh, 15% of vitrified brick clinker particles of 20-30 mesh, 32% of feldspar solvent and the anti-cracking 1% agent, add water and knead evenly to make mud;

[0042] In step C, the uniform mud mixed in step B is made into mud granules by a screen granulator, and the mud granules are extruded by a vacuum extruder and cut into wet bricks, wherein the relative vacuum degree of the vacuum extruder is - 0.08~-0.1MPa, the moisture content of mud particles is 20%;

[0043] Step D, placing the extruded wet adobe on ...

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Abstract

The invention discloses an anti-cracking surface-grinded brick and a preparation method thereof. The anti-cracking surface-grinded brick has a raw material formula which comprises the following raw materials in percentages by weight: 20% to 40% of plastic pug, 20% to 30% of full-body brick clinker particles with a particle size of 10 to 15 meshes, 10% to 15% of vitrified brick clinker particles with a particle size of 20 to 30 meshes, 20% to 35% of a feldspar solvent and 1% to 3% of an anti-cracking agent, wherein the anti-cracking agent has a formula composed of the following components in percentages by weight: 20% to 40% of a pure acrylic emulsion, 5% to 20% of alkyl ethenone modified cellulose, 1% to 5% of phosphate, 1% to 5% of polyvinyl alcohol, 10% to 15% of bentonite, 2% to 5% of apolyacrylic emulsion and 15% to 35% of water. According to the invention, on the premise of no damage to green-brick strength and sintering strength, the shrinkage deformability of a green brick is effectively reduced; the usage amount of the plastic pug is greatly reduced in the process of extrusion molding; the usage amount of large waste ceramic particles can be greatly improved; the strengthof the green brick is improved; a drying shrinkage rate and a sintering shrinkage rate are low; plasticity is strong; and drying cracks and sintering cracks are avoided from generation.

Description

technical field [0001] The invention relates to the field of extruded exterior wall bricks, in particular to an anti-crack grinding brick and a preparation method thereof. Background technique [0002] The existing grinding brick, as a kind of exterior wall brick, has a grinding effect on its surface. The preparation process of the ground brick is to grind the mud-extruded brick adobe through an abrasive tool, so that a plurality of randomly distributed depressions appear on the adobe. The drying shrinkage rate and sintering shrinkage rate of the existing grinding bricks are relatively high, resulting in dry cracks in the adobe, and fine lines and invisible cracks in the finished product, resulting in a high loss rate of the finished product. Contents of the invention [0003] The object of the present invention is to propose a kind of anti-crack grinding brick which has low drying shrinkage rate and sintering shrinkage rate, strong plasticity, and avoids drying cracks an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/132C04B33/13C04B33/32C04B33/30
CPCC04B33/13C04B33/1305C04B33/1324C04B33/30C04B33/32C04B2235/3463C04B2235/349C04B2235/447C04B2235/6562C04B2235/96Y02P40/60
Inventor 陈锦豪
Owner FOSHAN HENGTAI HONGSHI CERAMIC CO LTD
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