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A kind of wood fiber reinforced gypsum board

A gypsum board and wood fiber technology, applied in the field of wood fiber reinforced gypsum board, can solve the problems of not being able to meet market demand, insufficient expansion rate compressive strength, unsatisfactory compressive strength, thermal conductivity, and unsatisfactory screw-holding force, and achieve the The effect of good thermal waterproof effect, large screw holding force and flexural modulus of elasticity, and superior performance

Active Publication Date: 2014-10-08
临沂市新天力机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN2007100974028 discloses a wood fiber reinforced gypsum board, which has been unanimously recognized by the market in the past few years, but its compressive strength, thermal conductivity and screw holding force are still unsatisfactory; Li Guozhong et al. Strengthen the performance parameters of gypsum cementitious materials, but its 2h water absorption thickness expansion rate and compressive strength are not enough to meet the market demand (Journal of Building Materials, The influence of polyvinyl alcohol-coated corn straw fiber on the performance of gypsum, Li Guozhong, 2011 4 moon)

Method used

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  • A kind of wood fiber reinforced gypsum board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A wood fiber reinforced gypsum board, which is prepared from the following raw materials in parts by weight:

[0018] Wood fiber 20, gypsum powder 100, humic acid 8, silicon carbide powder 10, corundum 10, calcium chloride 8, polyvinyl alcohol 6, starch ether 3, borax 2, ethanol 1 and 0.05% (according to 0.05g citric acid: 100ml Proportioning mode of water) citric acid aqueous solution 50.

[0019] The preparation method of the above-mentioned wood fiber reinforced gypsum board is carried out according to the following steps:

[0020] Weigh the raw materials according to the above order, put them into the mortar mixer one by one, add the raw materials while stirring evenly to obtain the mixed slurry, and let it stand for 30 minutes; then pour the mixed slurry into the mold and cast it into a plate, and demould after the plate is solidified, and finally The board is placed in a hot and humid environment with a temperature of 60°C and a humidity of 80% for 10 hours.

[...

Embodiment 2

[0023] A wood fiber reinforced gypsum board, which is prepared from the following raw materials in parts by weight:

[0024] Wood fiber 30, gypsum powder 120, humic acid 10, silicon carbide powder 15, corundum 15, calcium chloride 10, polyvinyl alcohol 8, starch ether 5, borax 4, ethanol 2 and 0.05% (according to 0.05g citric acid: 100ml Proportioning mode of water) citric acid aqueous solution 60.

[0025] The preparation method of the above-mentioned wood fiber reinforced gypsum board is carried out according to the following steps:

[0026] Weigh the raw materials according to the above order, put them into the mortar mixer one by one, add the raw materials while stirring evenly to obtain the mixed slurry, and let it stand for 30 minutes; then pour the mixed slurry into the mold and cast it into a plate, and demould after the plate is solidified, and finally The board is placed in a hot and humid environment with a temperature of 60°C and a humidity of 80% for 10 hours.

...

Embodiment 3

[0029] Test and detection of technical parameters of wood fiber reinforced gypsum board:

[0030] Comparative test 1: the wood fiber reinforced gypsum board prepared by the applicant earlier (see CN2007100974028); the gypsum board prepared in Example 1; the gypsum board prepared in Example 2.

[0031]

[0032] Through comparison, it is found that the wood fiber reinforced gypsum board prepared by the present invention is greatly improved in performance parameters such as static bending strength, compressive strength, thermal conductivity, 2h water absorption thickness expansion rate and flexural elastic modulus, and is completely superior to similar products in the market. It will have a better market prospect.

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Abstract

The invention belongs to the field of building materials, and discloses a wood fiber reinforced gypsum board. The wood fiber reinforced gypsum board is prepared from the following raw materials: wood fibers, gypsum powder, a humic acid, silicon carbide powder, carborundum, calcium chloride, polyvinyl alcohol, starch ether, borax, ethanol and a citric acid aqueous solution. The invention also discloses a preparation method of the wood fiber reinforced gypsum board. The wood fiber reinforced gypsum board prepared by using the method disclosed by the invention has the characteristics of high static bending intensity and compressive strength, large screw holding force and anti-fracture elasticity modulus, and small coefficient of thermal conductivity, and the like.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a wood fiber reinforced gypsum board. Background technique [0002] Gypsum board is a material made of building gypsum as the main raw material. It is a building material with light weight, high strength, thin thickness, convenient processing, sound insulation, heat insulation and fire resistance. It is one of the new lightweight panels that are currently being developed. Gypsum boards have been widely used in interior partition walls, wall cladding panels (replacing plastering layers), ceilings, sound-absorbing panels, ground floor panels and various Decorative panels, etc. [0003] The gypsum boards currently produced in my country mainly include: paper gypsum boards, decorative gypsum boards, gypsum hollow strips, fiber gypsum boards, gypsum sound-absorbing boards, and anchor point gypsum boards. In recent years, fiber gypsum board has achieved great developmen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C04B16/02
Inventor 孙晋玉
Owner 临沂市新天力机械有限公司
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