Gypsum-based heat insulation board and production method thereof

A thermal insulation board and gypsum-based technology, applied in the field of building materials, can solve problems such as lack of breathing function, long maintenance period of finished products, complicated manufacturing process, etc., and achieve the effect of good thermal insulation performance, low density and high strength

Inactive Publication Date: 2020-03-27
湖南昌迅科技环保股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Nowadays, the insulation boards used in the interior insulation engineering of building exterior walls are mainly made of chemical raw materials, such as polystyrene foam, rock wool, glass wool, etc. The disadvantages are high price and complicated production process.
In addition, materials such as polystyrene foam are organic substances that are flammable and aging
Cement-based thermal insulation and fireproof board mainly uses cement as the main base material. Although it has high strength, it consumes a lot of energy during the manufacturing process, causes a lot of pollution, does not have breathing function, and the maintenance period of the finished product is long

Method used

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  • Gypsum-based heat insulation board and production method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of preparation method of gypsum-based insulation board, concrete steps are:

[0021] 1) Dry powder ingredients: 100 parts of hemihydrate gypsum, 30 parts of anhydrous gypsum, 0.05 parts of polycarboxylate superplasticizer, 0.1 part of polyethylene oxide, 0.08 parts of protein retarder for gypsum, and 0.05 parts of cellulose ether, Send to dry powder mixer, mix evenly;

[0022] 2) Preparation of foaming liquid: 5 parts of foaming agent (50% alkyl polyglycoside, 30% sodium alkylbenzene sulfonate, 20% cocamidopropyl betaine), 0.5 part of polyacrylamide, 160 parts of water Parts are mixed evenly to obtain a foaming solution, which is placed in a foaming machine for foaming to form foam, and the foaming time is 3 minutes;

[0023] 3) Slurry ingredients: add 60 parts of water to the mixed dry powder and stir to obtain a mixed slurry;

[0024] 4) uniformly mixing the mixed slurry with the foam to obtain a porous structure slurry, and molded and demoulded to form a cor...

Embodiment 2

[0027] A kind of preparation method of gypsum-based insulation board, concrete steps are:

[0028] 1) Dry powder ingredients: put 100 parts of hemihydrate gypsum, 0.05 parts of polycarboxylate superplasticizer, 0.1 part of acrylamide, 0.15 parts of sodium hexametaphosphate, and 0.05 parts of starch ether into a dry powder mixer and mix well;

[0029] 2) Preparation of foaming liquid: 5 parts of foaming agent (45% alkyl polyglycoside, 40% sodium alkylbenzene sulfonate, 15% cocamidopropyl betaine), 0.5 part of polyacrylamide, 160 parts of water Parts were mixed evenly to obtain a foaming solution, which was placed in a foaming machine for foaming to form foam, and the foaming time was 4 minutes;

[0030] 3) Slurry ingredients: add 80 parts of water to the mixed dry powder and stir to obtain a mixed slurry;

[0031] 4) uniformly mixing the mixed slurry with the foam to obtain a porous structure slurry, and molded and demoulded to form a core board;

[0032] 5) Pour the slurry o...

Embodiment 3

[0034] A kind of preparation method of gypsum-based insulation board, concrete steps are:

[0035] 1) Dry powder ingredients: mix 100 parts of hemihydrate gypsum, 50 parts of anhydrous gypsum, 0.05 parts of polycarboxylate superplasticizer, 0.1 part of polyethylene oxide, 0.05 parts of protein retarder for gypsum, and 0.06 parts of starch ether. Put into dry powder mixer, mix well;

[0036] 2) Preparation of foaming liquid: 10 parts of foaming agent (50% alkyl polyglycoside, 30% sodium alkylbenzene sulfonate, 20% cocamidopropyl betaine), 1 part of silicone amide, 350 parts of water Parts are mixed evenly to obtain a foaming solution, which is placed in a foaming machine for foaming to form foam, and the foaming time is 3 minutes;

[0037] 3) Slurry ingredients: add 100 parts of water to the mixed dry powder and stir to obtain a mixed slurry;

[0038] 4) uniformly mixing the mixed slurry with the foam to obtain a porous structure slurry, and molded and demoulded to form a cor...

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Abstract

The invention relates to a gypsum-based heat insulation board and a production method thereof, and belongs to the technical field of building materials. The gypsum-based heat insulation board is produced from semi-hydrated gypsum, anhydrous gypsum, a water reducing agent, a dispersing agent, a retarder, a water retaining agent, a foaming agent, a foam stabilizer and water. The production method comprises the following steps: proportionally mixing the foaming agent, the foam stabilizer and water to obtain a foaming solution, and preparing foam by using a foaming machine; uniformly mixing the above raw materials in proportion, stirring and mixing the raw materials and water in proportion, and adding the foam into the obtained slurry to obtain a mixed slurry; and injecting the mixed slurry into a mold to produce a core board, pouring a lower protective surface layer slurry into the forming mold, placing the core board on the protective surface layer slurry, preparing an upper protective surface layer, and performing hardening, demolding, and drying to obtain the heat insulation board. The semi-hydrated gypsum and the anhydrous gypsum are used as main raw materials, so that the produced gypsum-based heat insulation board has the advantages of small density, high strength, fireproof property, good heat insulation performance, non-toxicity and non-corrosivity, and the production method has the advantages of simple production process and low cost.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a gypsum-based thermal insulation board and a preparation method thereof. Background technique [0002] Nowadays, the insulation boards used in the interior insulation engineering of building exterior walls are mainly made of chemical raw materials, such as polystyrene foam, rock wool, glass wool, etc. The disadvantages are high price and complicated production process. In addition, materials such as polystyrene foam are organic substances, which are flammable and aging. Cement-based thermal insulation and fireproof board mainly uses cement as the main base material. Although it has high strength, it consumes a lot of energy in the manufacturing process, causes a lot of pollution, does not have breathing function, and the finished product has a long maintenance period. [0003] In recent years, the contradiction between resource shortage and environmental ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B38/10B28B1/50B28C5/38C04B111/40
CPCB28B1/50B28C5/388C04B28/14C04B38/10C04B2111/40C04B2201/32C04B2201/50C04B2103/302C04B2103/408C04B2103/22C04B2103/465C04B2103/48C04B24/10C04B24/20C04B24/124
Inventor 蔡雪飞王文忠杨雪杨玲
Owner 湖南昌迅科技环保股份有限公司
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