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Gypsum board and its preparation method

A technology of gypsum board and gypsum powder, which is applied in the direction of manufacturing tools, ceramic molding machines, etc.

Inactive Publication Date: 2012-02-08
ZHEJIANG GREEN ROCK ENVIRONMENTAL PROTECTION MATERIAL SHARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there have been researches on bamboo charcoal in building materials, its application scope still needs to be developed.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1, a kind of gypsum board is made up of 20 parts of bamboo charcoal and 80 parts of gypsum powder, and 20 parts of solid phase weight content is 4% TiO for use. 2 The sol is used as a binder; the following steps are performed in sequence:

[0026] 1), mix and stir bamboo charcoal and gypsum powder at room temperature for 12 hours; obtain raw materials;

[0027] 2), in the raw material that step 1) obtains, add TiO 2 Sol, mixed and stirred at room temperature for 4h; obtained mixture;

[0028] 3) The mixture obtained in step 2) is molded under high pressure at 10 MPa, then cured at 100°C for 2 hours, and finally heated to 300°C for 3 hours to obtain a gypsum board.

[0029] The obtained gypsum board has a specific surface area of ​​90m after testing 2 / g, releasing 800 negative ions / cm 3 , The far-infrared radiation rate is 87%. The removal rate of free formaldehyde is 11%, the removal rate of ammonia is 11%, and the removal rate of benzene is 10%. For 9...

Embodiment 2

[0030] Embodiment 2, a kind of gypsum board is made up of 30 parts of bamboo charcoal and 70 parts of gypsum powder as a raw material, and 35 parts of solid phase weight content is 6% TiO 2 The sol is used as a binder; the following steps are performed in sequence:

[0031] 1), mix and stir bamboo charcoal and gypsum powder at room temperature for 8 hours; obtain raw materials;

[0032] 2), in the raw material that step 1) obtains, add TiO 2 sol, mixed and stirred at room temperature for 1h; a mixture was obtained;

[0033] 3) The mixture obtained in step 2) is molded under high pressure at 10 MPa, then solidified at 80° C. for 2 hours, and finally heat-treated at 800° C. for 3 hours; a gypsum board is obtained.

[0034] The obtained gypsum board has a specific surface area of ​​110m after testing 2 / g, releasing 900 negative ions / cm 3 , The far-infrared radiation rate is 88%. The removal rate of free formaldehyde is 13%, the removal rate of ammonia is 14%, and the remova...

Embodiment 3

[0035] Embodiment 3, a kind of gypsum board is made up of 35 parts of bamboo charcoal and 65 parts of gypsum powder as a raw material, and 35 parts of solid phase weight content is 2% TiO 2 The sol is used as a binder; the following steps are performed in sequence:

[0036] 1), mix and stir bamboo charcoal and gypsum powder at room temperature for 12 hours; obtain raw materials;

[0037]2), in the raw material that step 1) obtains, add TiO 2 Sol, mixed and stirred at room temperature for 3h; to obtain a mixture;

[0038] 3) The mixture obtained in step 2) is molded under high pressure at 5Mpa, then cured at 80°C for 1 hour, and finally heated to 580°C for 1 hour to obtain a gypsum board.

[0039] The obtained gypsum board has a specific surface area of ​​120m after testing 2 / g, releasing 1100 negative ions / cm 3 , The far infrared radiation rate is 90%. The removal rate of free formaldehyde is 15%, the removal rate of ammonia is 17%, and the removal rate of benzene is 18%...

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Abstract

The invention discloses a gypsum board composed of raw materials and a binder. The raw materials comprises by weight: 20-40% of bamboo charcoal and 60-80% of gypsum powder. And the binder accounts for 20-35% of the total weight of the raw materials. Meanwhile, the invention also provides a preparation method of the gypsum board. The method sequentially includes the steps of: 1) mixing the bamboo charcoal and gypsum powder and stirring the them for 1-12h so as to obtain the raw materials; 2) adding a TiO2 sol into the raw materials and mixing them for 1-4h, thus obtaining a mixture; 3) subjecting the mixture to high pressure molding, then curing and finally heat treatment, thus obtaining the gypsum board. The gypsum board provided in the invention has the functions of adsorption, far-infrared radiation and anion release, etc.

Description

technical field [0001] The invention relates to a building material for interior decoration and a preparation method thereof, in particular to a gypsum board and a preparation method thereof. Background technique [0002] Gypsum board is widely used in building decoration materials because of its light weight, high strength, sound insulation, heat insulation, fire prevention, and easy processing. And endowing it with more functions is also in further development, such as preparing hygroscopic gypsum board by adding activated carbon: in the application number 02135129.5 "A kind of paper-faced gypsum board and its production method", the inventor used gypsum powder 82~ 90 parts, 5-10 parts of activated carbon, 0.5-0.8 parts of cornstarch, 0.3-0.5 parts of paper fiber, through stirring, forming, cutting, drying and trimming, the gypsum board conforming to GB / T9775-1999 is obtained. In the application number 200710139236.3 "A Paper Gypsum Board", the inventor used 40-50 parts o...

Claims

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Application Information

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IPC IPC(8): C04B28/14B28B1/00
Inventor 郭兴忠李文彦孙赛杨辉樊先平涂志龙
Owner ZHEJIANG GREEN ROCK ENVIRONMENTAL PROTECTION MATERIAL SHARE
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