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Thermal preservation energy saving composite phase change energy storage gypsum board prepared by using phosphorous gypsum and preparation method thereof

A composite phase change and phase change energy storage technology, applied in the field of building materials, can solve problems such as environmental pollution of phosphogypsum and yellow phosphorus slag, and achieve the effects of excellent thermal stability, simple preparation process and good waterproofness

Inactive Publication Date: 2012-09-12
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In order to develop circular economy and comprehensive utilization of resources, the present invention develops a thermal insulation and energy-saving composite phase change energy storage gypsum board and its preparation method using phosphogypsum and yellow phosphorus slag, which can solve the environmental pollution problems of phosphogypsum and yellow phosphorus slag , and can develop a new way for the rational utilization of phosphogypsum and yellow phosphorus slag

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) According to 80mL of distilled water corresponding to 6g of stearic acid and 30g of liquid paraffin, first mix the distilled water and surface hydrophobic modifier in a water bath at a constant temperature of 50°C and magnetically stir them evenly, then add liquid paraffin at a temperature of 100°C, Stir again at 1200r / min for 180min to obtain a uniform dispersed phase emulsion;

[0032] (2) Warm up the dispersed phase emulsion obtained in step (1) to 130°C, add high-density polyethylene accounting for 10wt% of the mass of the dispersed phase emulsion, and expandable graphite powder accounting for 1wt% of the mass of the dispersed phase emulsion, and then min under stirring for 60min to obtain the dispersed phase;

[0033] (3) Gradually cool the dispersed phase in step (2) below the melting point of high-density polyethylene (130°C), and when the temperature drops to 70°C, the shape-fixed phase-change energy storage material can be obtained by compression molding; ...

Embodiment 2

[0037] (1) According to 85mL of distilled water corresponding to 4g of sodium dodecylbenzene sulfonate and 26g of liquid paraffin, the distilled water and the surface hydrophobic modifier were stirred evenly in a water bath at a constant temperature of 50°C, and then added at a temperature of 85 ℃ liquid paraffin, and then stirred at 1500r / min for 180min to obtain a uniform dispersed phase emulsion;

[0038] (2) Heat up the dispersed phase emulsion obtained in step (1) to 150°C, add 8wt% polypropylene and 2wt% porous graphite based on the mass of the dispersed phase emulsion, and then stir at 1200r / min 60min, obtain dispersed phase;

[0039] (3) Gradually cool the dispersed phase in step (2) below the melting point of high-density polyethylene (130°C), and when the temperature drops to 70°C, the shape-fixed phase-change energy storage material can be obtained by compression molding;

[0040] (4) Prepare materials according to the following mass percentages: 50 parts of phosph...

Embodiment 3

[0043] (1) According to 90mL of distilled water corresponding to 5g of fatty acid glycerides and 25g of liquid paraffin, the distilled water and surface hydrophobic modifier are stirred evenly in a water bath at a constant temperature at 50°C, and then liquid paraffin at a temperature of 90°C is added. Stir again at 1000r / min for 180min to obtain a uniform dispersed phase emulsion;

[0044] (2) Raise the temperature of the dispersed phase emulsion obtained in step (1) to 120°C, add polystyrene accounting for 7wt% of the mass of the dispersed phase emulsion, and expandable graphite powder accounting for 3wt% of the mass of the dispersed phase emulsion, and then at 1000r / min Down stirring 60min, obtain dispersed phase;

[0045] (3) Gradually cool the dispersed phase in step (2) below the melting point of high-density polyethylene (130°C), and when the temperature drops to 70°C, the shape-fixed phase-change energy storage material can be obtained by compression molding;

[0046]...

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Abstract

The invention provides a thermal preservation energy saving composite phase change energy storage gypsum board prepared by using phosphorous gypsum and a preparation method thereof. The thermal preservation energy saving composite phase change energy storage gypsum board comprises the following components: 45-60 parts of phosphorous gypsum, 3-35 parts of yellow phosphorus slag, 10-20 parts of cement, 2-5 parts of calcined lime, 0.8-1.4 part of polycarboxylic acid type water-reducer and 0.9-1.8 part of polypropylene fiber; and the composite phase change energy storage gypsum board is obtained after the components and a shape-stabilized phase change energy storage material are mixed. The paraffin wax-high density polyethylene polymer shape-stabilized phase change material prepared by the invention has good hydrophilicity and can be applied to a phosphorous gypsum gelatinization component; the thermal preservation energy saving composite phase change energy storage gypsum board has the advantages that the technology is simple, the operation is convenient, the continuous production can be carried out, and the application range of the phase change energy storage material can be widened, and the application of the phase change energy storage material in production and life is simplified; and the prepared composite phase change energy storage gypsum board has excellent thermal stability and better water repellency.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a method for preparing a light-weight, heat-preserving, energy-saving, phase-change energy-storing gypsum board by using phosphate stone (solid waste) and yellow phosphorus slag, which are by-products of phosphorus chemical industry. Background technique [0002] Phosphogypsum is an industrial waste produced during the production of wet-process phosphoric acid, and its main component is CaSO 4 2H 2 0, usually every 1t produced (P 2 o 5 Total) phosphoric acid will produce about 5t of phosphogypsum. At present, with the continuous growth of domestic demand for ammonium phosphate and high-concentration phosphorus compound fertilizer, the development of the wet-process phosphoric acid industry has been promoted, and a large amount of phosphogypsum has been produced, and the annual increase of phosphogypsum is more than 10 million tons. [0003] The research...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C09K5/06
Inventor 杨月红舒敦涛张怀予
Owner KUNMING UNIV OF SCI & TECH
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