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Anti-cracking and pressure-resistant brick and preparation method thereof

A pressure-resistant and anti-cracking technology, applied in the field of extrusion-molded floor tiles, can solve the problems of easy generation of fine lines, high drying shrinkage and sintering shrinkage, and large thickness

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

Generally, pressure-resistant bricks have a thickness of more than 30mm in order to achieve higher strength. Due to the large thickness and poor plasticity, it is difficult to form, and the drying shrinkage and sintering shrinkage are high, which makes the bricks prone to dry cracks and sintered finished products. It is also prone to fine lines and invisible cracks, resulting in high loss rate of WIP

Method used

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  • Anti-cracking and pressure-resistant brick and preparation method thereof
  • Anti-cracking and pressure-resistant brick and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 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;

[0024] Step B, according to the percentage by weight, add 20% of plastic mud, 60% of 15-25 mesh split brick clinker particles, 15% of feldspar solvent and 5% of anti-cracking agent, add water and mix and knead evenly to make mud;

[0025] 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 bricks, wherein the relative vacuum degree of the vacuum extruder is -0.08 ~-0.1MPa, the moisture content of mud particles is 18%;

[0026] Step D, firstly, put the prepared adobe into a microwave drying room, and dry it at a drying temp...

Embodiment 2

[0030] Step A, according to the percentage by weight, 35% of pure acrylic emulsion, 10% of alkyl ketene modified cellulose, 3% of phosphate, 3% of polyvinyl alcohol, 10% of bentonite, 5% of polyacrylic acid emulsion and 34% of water, Disperse and grind at a high speed at room temperature until the fineness is 70 μm to obtain the anti-cracking agent;

[0031] Step B, according to the percentage by weight, add 20% of plastic mud, 60% of 15-25 mesh split brick clinker particles, 15% of feldspar solvent and 5% of anti-cracking agent, add water and mix and knead evenly to make mud;

[0032] 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 bricks, wherein the relative vacuum degree of the vacuum extruder is -0.08 ~-0.1MPa, the moisture content of mud particles is 18%;

[0033] Step D, firstly, put the prepared adobe into a microwave drying room, and dry it at a drying tem...

Embodiment 3

[0037] Step A, according to the percentage by weight, 35% of pure acrylic emulsion, 20% of alkyl ketene 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;

[0038] Step B, according to the percentage by weight, add 20% of plastic mud, 60% of 15-25 mesh split brick clinker particles, 15% of feldspar solvent and 3% of anti-cracking agent, add water and mix and knead evenly to make mud;

[0039] 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 bricks, wherein the relative vacuum degree of the vacuum extruder is -0.08 ~-0.1MPa, the moisture content of mud particles is 18%;

[0040] Step D, firstly, put the prepared adobe into a microwave drying room, and dry it at a drying tem...

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Abstract

The invention discloses an anti-cracking and pressure-resistant brick and a preparation method thereof. The anti-crack and pressure-resistant brick comprises the following raw materials in percentageby weight: 20%-40% of plastic clay material, 40%-60% of 15-25 mesh split brick clinker particles, 10%-25% of feldspar solvent, and 2%-5% of anti-cracking agent, wherein the anti-cracking agent consists of the following components in percentage by weight: 20%-40% of pure acrylic emulsion, 5%-20% of alkyl vinyl ketone modified cellulose, 1%-5% of phosphate, 1%-5% of polyvinyl alcohol, 10%-15% of bentonite, 2%-5% of polyacrylic emulsion, and 15%-35% of water; and the anti-crack and pressure-resistant brick has a thickness of >=30mm. According to the anti-cracking and pressure-resistant brick andthe preparation method thereof, dry crack resistance of unburned bricks is improved, and generation of sintering cracks is avoided; under the premise of not damaging strength and firing strength of the unburned bricks, shrinkage deformation performance of the unburned bricks can be effectively reduced; and the using amount of the plastic clay material during extrusion molding can be greatly reduced, and the using amount of large-particle ceramic waste can be greatly improved to avoid occurrence of fine cracks and stealth cracks in a burned finished product.

Description

technical field [0001] The invention relates to the field of extruded floor tiles, in particular to a crack-proof pressure-resistant brick and a preparation method thereof. Background technique [0002] Existing pressure-resistant bricks, as a kind of extruded floor tiles, are widely used in public places with dense crowds such as squares, stations, sidewalks, etc. because of their high compressive strength. Generally, pressure-resistant bricks have a thickness of more than 30mm in order to achieve higher strength. Due to the large thickness and poor plasticity, it is difficult to form, and the drying shrinkage and sintering shrinkage are high, which makes the bricks prone to dry cracks and sintered finished products. It is also prone to fine lines and invisible cracks, resulting in a high loss rate of WIP. Contents of the invention [0003] The object of the present invention is to propose a crack-proof pressure-resistant brick with low drying shrinkage and sintering shr...

Claims

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Application Information

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