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Water resistant gypsum board and preparation method thereof

A technology for gypsum board and desulfurization gypsum is applied in the field of water-resistant gypsum board and its preparation, which can solve problems such as poor water resistance and achieve the effect of good water resistance.

Active Publication Date: 2017-05-31
重庆市鹤众工贸有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, current gypsum boards have poor water resistance

Method used

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  • Water resistant gypsum board and preparation method thereof
  • Water resistant gypsum board and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Water-resistant gypsum board, composed of: desulfurized gypsum 50kg, 425R ordinary Portland cement 16kg, pozzolan 10kg, class II fly ash 2kg, sodium lauryl sulfate 0.625kg, sodium α-olefin sulfonate 0.25kg, carboxymethyl 0.125 kg of sodium cellulose, 0.6 kg of sodium polynaphthaldehyde sulfonate, 0.04 kg of citric acid, and 75 kg of water with a pH of 7.

[0037] The preparation method of described water-resistant gypsum board is:

[0038] A. Weigh 50kg of desulfurized gypsum, 16kg of 425R ordinary Portland cement, 10kg of pozzolan, 2kg of grade II fly ash, 0.04kg of citric acid and 56.25kg of water with a pH of 7, and stir at a speed of 500 rpm for 45min aged;

[0039] B. take by weighing sodium lauryl sulfate 0.625kg, α-alkenyl sodium sulfonate 0.25kg, sodium carboxymethyl cellulose 0.125kg, polynaphthaldehyde sulfonic acid sodium salt 0.6kg and pH are 7 water 18.75kg, Stir for 6h at a speed of 900 rev / min;

[0040] C. Add the mixture obtained in step B to the mixt...

Embodiment 2

[0043]Water-resistant gypsum board, composed of: 40kg of desulfurized gypsum, 13kg of 425R ordinary Portland cement, 7kg of pozzolan, 3kg of grade II fly ash, 1.25kg of sodium lauryl sulfate, 0.5kg of sodium α-olefin sulfonate, carboxymethyl 0.25 kg of sodium cellulose, 0.9 kg of polycarboxylic acid-based high-performance water reducer, 0.07 kg of tartaric acid, and 80 kg of water with a pH of 8.

[0044] The preparation method of described water-resistant gypsum board is:

[0045] A. Weigh 40kg of desulfurized gypsum, 13kg of 425R ordinary Portland cement, 7kg of volcanic ash, 3kg of grade II fly ash, 0.07kg of tartaric acid and 60kg of water with a pH of 8, stir at 600rpm for 60min and then age ;

[0046] B. Weigh 1.25kg of sodium lauryl sulfate, 0.5kg of sodium α-olefin sulfonate, 0.25kg of sodium carboxymethylcellulose, 0.9kg of polycarboxylate high-performance water reducer and 20kg of water with a pH of 8 , stirred for 7h at a speed of 800 rpm / min;

[0047] C. Add the...

Embodiment 3

[0050] Water-resistant gypsum board, composed of: 42kg of desulfurized gypsum, 14kg of 425R ordinary Portland cement, 9kg of pozzolan, 2.5kg of grade II fly ash, 1kg of sodium lauryl sulfate, 0.4kg of sodium α-olefin sulfonate, carboxymethyl 0.2 kg of sodium cellulose, 0.3 kg of sodium polynaphthaldehyde sulfonate, 0.45 kg of polycarboxylate high-performance water reducer, 0.05 kg of tartaric acid, and 78 kg of water with a pH of 7.5.

[0051] The preparation method of described water-resistant gypsum board is:

[0052] A. Weigh 42kg of desulfurized gypsum, 15kg of 425R ordinary Portland cement, 9kg of pozzolan, 2.5kg of grade II fly ash, 0.05kg of tartaric acid and 58.5kg of water with a pH of 7.5, and stir for 55min at a speed of 540 rpm aged;

[0053] B. Weigh 1 kg of sodium lauryl sulfate, 0.4 kg of sodium α-olefin sulfonate, 0.2 kg of sodium carboxymethyl cellulose, 0.3 kg of sodium polynaphthaldehyde sulfonate, and polycarboxylate high-performance water reducer 0.45kg ...

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Abstract

The invention belongs to the technical field of building materials and particularly relates to a water resistant gypsum board which is prepared from the following raw materials in parts by mass: 40-50 parts of desulfurized gypsum, 13-16 parts of ordinary Portland cement, 7-10 parts of volcanic ash, 2-3 parts of grade II fly ash, 1-2 parts of a foaming agent, 0.6-0.9 part of a water reducing agent, 0.04-0.07 part of a setting retarder and 75-80 parts of water with a pH value being 7-8. The water resistant gypsum board disclosed by the invention is good in water resistance.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a water-resistant gypsum board and a preparation method thereof. Background technique [0002] Gypsum board is a material made of desulfurized 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 prevention. Gypsum board has the advantages of low production energy consumption, light heat insulation, fire resistance, good decorative function, good constructability, adjustable indoor humidity, high production efficiency and low investment. 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] However, current gypsum boards have poor water resistance. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B111/27
CPCC04B28/144C04B2111/27C04B2201/50C04B7/02C04B14/14C04B18/08C04B24/16C04B24/383C04B24/226C04B24/06C04B22/002C04B24/24
Inventor 廖桂虎
Owner 重庆市鹤众工贸有限责任公司