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Fluorgypsum based inorganic thermal mortar

A technology of inorganic thermal insulation mortar and fluorogypsum, which is applied in the field of building energy-saving materials, can solve the problems of high density, poor water resistance, and large shrinkage, and achieve the effects of low shrinkage, improved water resistance, and accelerated strength

Inactive Publication Date: 2014-03-19
上海英硕聚合材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the disadvantages of inorganic thermal insulation mortar with cement as the main cementitious material in the prior art, such as high density and large shrinkage rate, and poor water resistance with desulfurized gypsum as the main cementitious material, and provide a kind of fluorogypsum Base inorganic thermal insulation mortar and preparation method thereof

Method used

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  • Fluorgypsum based inorganic thermal mortar

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 750 parts of fluorogypsum, 150 parts of S95 slag powder, 50 parts of II high-calcium fly ash, 15 parts of composite active activator (5 parts of sodium sulfate + 10 parts of sodium thiosulfate), 17 parts of alkaline regulator (cement 7 part + 10 parts of high magnesium lime), 5 parts of cellulose ether (viscosity of 40000mPa·S), 10 parts of dispersible rubber powder and 3 parts of pp fiber. After stirring for 2 minutes, add vitrified microbeads (density 90kg / m 3 ) 500 parts and continue to stir for 3 minutes to obtain fluorogypsum-based inorganic thermal insulation mortar.

[0035] During construction, the water consumption is 90% of the fluorogypsum-based inorganic thermal insulation mortar (dry powder) prepared above; the dry density of the obtained fluorogypsum-based inorganic thermal insulation mortar is 330kg / m 3 , the compressive strength is 0.56Mpa, the thermal conductivity is 0.068W / m·K, and the softening coefficient is 0.90. This kind of inorganic thermal in...

Embodiment 2

[0037] 850 parts of fluorine gypsum, 50 parts of S75 slag powder, 60 parts of III high-calcium fly ash, 10 parts of composite active activator (5 parts of industrial alum + 5 parts of sodium sulfate), 10 parts of alkaline regulator (10 parts of cement) , 3 parts of cellulose ether (viscosity is 100000mPa·S), 15 parts of dispersible rubber powder and 2 parts of pp fiber are fed at one time, after stirring for 3 minutes, add vitrified microbeads (density 100kg / m 3 ) 260 parts and continue to stir for 2 minutes to obtain fluorogypsum-based inorganic thermal insulation mortar.

[0038] During construction, the water consumption is 86% of the fluorogypsum-based inorganic thermal insulation mortar (dry powder) prepared above; the dry density of the obtained fluorogypsum-based inorganic thermal insulation mortar is 436kg / m 3 , the compressive strength is 0.86Mpa, the thermal conductivity is 0.078W / m·K, and the softening coefficient is 0.80. This kind of inorganic thermal insulation ...

Embodiment 3

[0040] 800 parts of fluorogypsum, 80 parts of S95 slag powder, 55 parts of II high-calcium fly ash, 12 parts of composite active activator (5 parts of sodium bisulfate + 7 parts of sodium thiosulfate), 20 parts of alkaline regulator (quicklime 10 parts + 10 parts of alkali residue), 4 parts of cellulose ether (viscosity of 75000mPa·S), 20 parts of dispersible rubber powder and 2.5 parts of pp fiber are fed at one time, after stirring for 2.5 minutes, add vitrified microbeads (density 110kg / m 3 ) 100 parts and continue to stir for 2.5 minutes to obtain fluorogypsum-based inorganic thermal insulation mortar.

[0041] During construction, the water consumption is 80% of the fluorogypsum-based inorganic thermal insulation mortar (dry powder) prepared above; the dry density of the obtained fluorogypsum-based inorganic thermal insulation mortar is 756kg / m 3 , the compressive strength is 2.6Mpa, the thermal conductivity is 0.128W / m·K, and the softening coefficient is 0.82. This ki...

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Abstract

The invention relates to a fluorgypsum based inorganic thermal mortar and a preparation method of the fluorgypsum based inorganic thermal mortar. The fluorgypsum based inorganic thermal mortar comprises the following components in parts by weight: 750-850 parts of fluorgypsum, 100-500 parts of vitrified micro ball, 50-150 parts of slag powder, 50-60 parts of coal ash, 10-15 parts of composite active excitant, 10-20 parts of basic regulator, 10-20 parts of dispersible gelatine powder, 3-5 parts of cellulose ether and 2-3 parts of pp fiber. The preparation method of the fluorgypsum based inorganic thermal mortar comprises the steps of stirring the components for 2-3 min except for the vitrified micro ball, adding the vitrified micro ball, and continuously stirring for 2-3 min to obtain the fluorgypsum based inorganic thermal mortar. According to the invention, the fluorgypsum directly discharged from a chemical plant is adopted as a main gelatinizing material, a small amount of doping materials are compounded, and a certain amount of additive is added, so that the inorganic thermal mortar using the fluorgypsum as the main gelatinizing material is obtained; a processing technology of quickly processing the fluorgypsum is provided; and the product, namely the fluorgypsum based inorganic thermal mortar has thermal insulation and insulating performance and water resistant performance, and can be used for thermal insulation inside and outside buildings.

Description

technical field [0001] The invention belongs to the technical field of building energy-saving materials, and in particular relates to a fluorogypsum-based inorganic heat-preservation mortar. Background technique [0002] Fluorogypsum is a by-product in the production process of hydrofluoric acid. The waste residue mainly composed of calcium sulfate produced by the reaction of sulfuric acid and fluorite is mainly produced in inorganic fluoride and organic fluoride production plants and other hydrofluoric acid production plants. The production of 1 ton of hydrofluoric acid produces more than 4 tons of fluorogypsum. Currently, the annual discharge of fluorogypsum reaches about 1 million tons. Since fluorine gypsum contains residual fluorite and sulfuric acid, the content of fluorine and sulfuric acid is relatively high, which makes the discharged fluorine gypsum acidic, which is a highly corrosive and harmful solid waste and cannot be piled up directly. In this regard, my cou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14
Inventor 尧璟云成时亮辛春华阮丰乐
Owner 上海英硕聚合材料股份有限公司