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A kind of environment-friendly decorative gypsum board and preparation method thereof

A gypsum board, environmentally friendly technology, applied in the direction of lime coatings, coatings, etc., can solve problems such as lack of environmental protection performance

Active Publication Date: 2017-07-21
TAISHAN GYPSUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, existing decorative gypsum boards, such as widely used PVC veneer panels, knurled embossed panels and painted decorative panels, do not have environmental performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0059] The present invention also provides a method for preparing the environment-friendly decorative gypsum board described in the above technical solution, comprising the following steps:

[0060] a) mixing hemihydrate gypsum, diatom mud, quicklime, talcum powder, citric acid and cellulose to obtain a powder;

[0061] b) the powder, nano-TiO 2 mixed with water to obtain a slurry;

[0062] c) spraying the slurry on the surface of the gypsum board, cooling it, and then drying it to obtain an environment-friendly decorative gypsum board.

[0063] In the present invention, before mixing hemihydrate gypsum, diatom ooze, quicklime, talcum powder, citric acid and cellulose, preferably also include:

[0064] The hemihydrate gypsum, diatom mud, quicklime and talcum powder are pretreated respectively to obtain pretreated hemihydrate gypsum, diatom mud, quicklime and talc powder respectively. In the present invention, the process of the pretreatment is preferably specifically:

[0...

Embodiment 1

[0079] (1) Mix 450g of hemihydrate gypsum, 250g of diatom mud, 148.8g of quicklime, 150g of talcum powder, 1g of citric acid and 0.2g of methylcellulose to obtain a total of 1000g of powder.

[0080] (2) 1000g of the above powder, 80g of nano-TiO 2 and 1000g of water were sent into a high-speed interlayer insulation stirrer, and stirred at 30° C. to obtain a slurry.

[0081] (3) Send the slurry into the nozzle of the spraying printer, and spray the gypsum board with a thickness of 7mm according to the program of the industrial control microcomputer of the multi-color printing machine connected to the spraying printer, and control the temperature of the slurry during the spraying process to 40°C , and then cool the slurry sprayed on the surface of the paper-faced gypsum board to 25°C, and finally send the above board into a dryer and dry it at 120°C for 3 minutes to obtain an environmentally friendly decorative gypsum board. The thickness of the surface layer of the environment...

Embodiment 2

[0083](1) Mix 550g of hemihydrate gypsum, 220g of diatom mud, 128.7g of quicklime, 100g of talcum powder, 1g of citric acid and 0.3g of methylcellulose to obtain a total of 1000g of powder.

[0084] (2) 1000g of the above powder, 88g of nano TiO 2 and 1200g of water were sent into a high-speed interlayer insulation stirrer, and stirred at 35° C. to obtain a slurry.

[0085] (3) Send the slurry into the nozzle of the spraying printer, and spray the gypsum board with a thickness of 7mm according to the program of the industrial control microcomputer of the multi-color printing machine connected to the spraying printer, and control the temperature of the slurry during the spraying process to 40°C , and then cool the slurry sprayed on the surface of the paper-faced gypsum board to 25°C, and finally send the above board into a dryer and dry it at 120°C for 3 minutes to obtain an environmentally friendly decorative gypsum board. The thickness of the surface layer of the environmenta...

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Abstract

The invention provides an environment-friendly decorative gypsum board, comprising: a paper-faced gypsum board; a surface layer compounded on the paper-faced gypsum board; the surface layer is made of a slurry comprising the following components: hemihydrate gypsum 45 to 55 parts by weight; 15 to 30 parts by weight of diatom mud; 10 to 20 parts by weight of quicklime; 5 to 20 parts by weight of talcum powder; 0.01 to 0.3 parts by weight of citric acid; cellulose 0.01 to 0.5 parts by weight; 2 to 14 parts by weight of nano-TiO2; 90 to 130 parts by weight of water. Compared with the prior art, the environment-friendly decorative gypsum board provided by the invention adjusts the composition and content of the surface layer, so that the product has the performance of adjusting humidity and purifying air. Experimental results show that the indoor relative humidity of the environment-friendly decorative gypsum board provided by the invention is kept at 55%-60%, and the formaldehyde content is lower than 0.1mg / m3.

Description

technical field [0001] The invention relates to the technical field of gypsum boards, and more specifically relates to an environment-friendly decorative gypsum board and a preparation method thereof. Background technique [0002] Decorative gypsum board is made of building gypsum as the main raw material, mixed with a small amount of fiber materials, etc., with various patterns and floral decorations. It can be used to decorate walls, make wall panels and skirting boards, etc. It is a substitute for natural stone and terrazzo. Ideal material. In recent years, decorative gypsum board, as a new type of interior decoration material, has attracted widespread attention due to its light weight, fire resistance, moisture resistance, easy processing, and simple installation. [0003] Decorative gypsum boards usually have a two-layer structure, including a base material and a surface layer, wherein the base material is used to fix the decorative gypsum board in practical applicatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D1/12
CPCC09D1/00C09D1/12
Inventor 贾同春高甲明赵合军芦燕段广明葛绪英冯富玲
Owner TAISHAN GYPSUM CO LTD
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