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Fiber cement board and preparation method thereof

A fiber cement and board technology, applied in the field of decorative materials, can solve problems such as no health function, delamination, and influence on safety decoration effects, and achieve the effect of improving mechanical properties

Inactive Publication Date: 2017-07-21
GUANGZHOU FORM BUILDING MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main characteristics of the existing fiber cement boards on the market are: 1) single-layer structure, a board made of fiber and cement, etc. The disadvantage is that its surface effect cannot be processed later, because once it is polished or sandblasted , the fibers will be exposed; 2) Due to the immaturity of the overall formula, cracks and cracks will occur, which will affect safety and decorative effects; 3) Some are double-layer structures, the surface layer is the effect layer, there is no fiber, and the base layer is the structural layer, but its Immature surface layer formula can easily lead to delamination problems
4) The existing fiber cement board or cement board has no health function, no negative oxygen ion function

Method used

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  • Fiber cement board and preparation method thereof
  • Fiber cement board and preparation method thereof
  • Fiber cement board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A kind of preparation method of fiber cement plate, described method comprises the following steps:

[0055] (1) Mix 25kg of Portland cement, 20kg of quartz sand, 25kg of glass, 8kg of toner, 0.8kg of lignosulfonate sodium salt superplasticizer, 5.2kg of methylcellulose and 16kg of water, and spray it on the abrasive tool To form the surface layer, mix 25kg Portland cement, 30kg quartz sand, 25kg fly ash, 4.2kg glass fiber, 0.8kg lignosulfonate sodium salt superplasticizer, 5kg methylcellulose and 10kg water, and spray or Import into the mold to form a structural layer, cure for 15 minutes, and demould to obtain a semi-finished board;

[0056] (2) Pre-curing the semi-finished product obtained in step (1) for 5 hours, steam curing for 2 hours at a steam pressure of 2.2 MPa, and drying to obtain a fiber cement board.

[0057] Among them, the average length of the glass fibers is 8 mm, and the average diameter is 20 μm.

Embodiment 2

[0059] A kind of preparation method of fiber cement plate, described method comprises the following steps:

[0060] (1) Mix 45kg of Portland cement, 15kg of river sand, 10kg of colored stone, 6kg of color paste, 0.5kg of naphthalene-based water reducing agent, 5.5kg of methyl ethyl cellulose and 18kg of water, and spray it on the abrasive tool To form the surface layer, mix 45kg of Portland cement, 10kg of river sand, 15kg of perlite, 6kg of polyester fiber, 0.1kg of naphthalene-based water reducer, 5.9kg of methyl ethyl cellulose and 18kg of water, and spray or introduce it into the mold A structural layer is formed inside, cured for 480 minutes, demoulded, and a semi-finished board is obtained;

[0061] (2) Perform pre-curing on the semi-finished product obtained in step (1) for 10 hours, steam curing for 8 hours at a steam pressure of 0.1 MPa, and dry to obtain a fiber cement board.

[0062] Among them, the average length of the polyester fiber is 15 mm, and the average di...

Embodiment 3

[0064] A kind of preparation method of fiber cement plate, described method comprises the following steps:

[0065] (1) Mix 45kg of magnesia cement, 20kg of sea sand, 20kg of colored sand, 1kg of toner, 0.5kg of aliphatic water reducing agent, 3.5kg of polymethyl acrylate and 10kg of water, and spray it on the abrasive tool to form a surface layer, Mix 45k of magnesia cement, 20kg of sea sand, 21.5kg of magnesium chloride, 2kg of cellulose acetate, 0.5kg of aliphatic water reducer, 1kg of polymethyl acrylate and 10kg of water, and spray or introduce it into the mold to form a structural layer, solidify for 120 minutes, and remove mold to get semi-finished board;

[0066] (2) Pre-curing the semi-finished product obtained in step (1) for 6 hours, steam curing for 3 hours at a steam pressure of 2.0 MPa, and drying to obtain a fiber cement board.

[0067] Among them, the average length of the acetate fiber is 10 mm, and the average diameter is 18 μm.

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Abstract

The invention relates to a fiber cement board. The fiber cement board includes a surface layer and a structure layer, wherein the structure layer is prepared from, by mass, 25-45% of cement, 10-30% of silica sand, 10-25% of lightweight aggregate, 0.1-0.8% of water reducing agent, 2-6% of fiber, 1-5% of adhesive and 10-18% of water. The fiber cement board has good mechanical performance and high strength, does not crack, is free of cracks, meanwhile has good processing and decorative performance and can undertake after processing such as grinding to obtain a smooth surface, sand blasting to form a sandy surface or pickling to form an acid washing surface, and a variety of different decorative effects are obtained. In addition, the fiber cement board has a negative oxygen ion function, can significantly improve the air quality and increase the air negative oxygen ion content, can improve a body immune function and can improve sleep, improve a lung function, soften blood vessels and other health functions. The board is named as a pharaoh stone.

Description

technical field [0001] The invention belongs to the field of decorative materials, and specifically designs a fiber cement board and a preparation method thereof. Background technique [0002] Fiber cement board is a new type of exterior wall panel. Compared with various existing exterior wall panels, it has high strength and good decorative effect, and has broad market prospects. The main characteristics of the existing fiber cement boards on the market are: 1) single-layer structure, a board made of fiber and cement, etc. The disadvantage is that its surface effect cannot be processed later, because once it is polished or sandblasted , the fibers will be exposed; 2) Due to the immaturity of the overall formula, cracks and cracks will occur, which will affect safety and decorative effects; 3) Some are double-layer structures, the surface layer is the effect layer, there is no fiber, and the base layer is the structural layer, but its The surface layer formula is immature, ...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B28/30B32B13/02B32B13/04
CPCB32B13/02B32B13/04B32B2307/748C04B28/04C04B28/30C04B2111/00017C04B2111/00025C04B2111/00612C04B2201/50C04B14/06C04B14/22C04B2103/54C04B24/18C04B24/383C04B40/024C04B18/08C04B14/42C04B14/068C04B14/02C04B24/226C04B14/18C04B16/0683C04B2103/302C04B24/2641C04B22/12C04B18/24
Inventor 李军
Owner GUANGZHOU FORM BUILDING MATERIAL CO LTD
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