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A kind of preparation method of inorganic-organic composite phase change energy storage material for building

A technology of composite phase change and energy storage materials, which is applied in the field of preparation of inorganic-organic composite phase change energy storage materials for buildings, can solve problems such as polluting the environment, corroding objects, and easy leakage, and achieves large energy storage and energy storage Suitable temperature and good stability

Active Publication Date: 2017-10-10
INST OF APPLIED CHEM JIANGXI ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, solid-liquid phase change heat storage materials usually have supercooling and phase separation, which will lead to deterioration of heat storage performance, easy leakage, environmental pollution, corrosion of objects and other problems.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Under the protection of nitrogen, 30.0 grams of acrylic acid, which was distilled under reduced pressure to remove the polymerization inhibitor, was added to a 250 mL three-necked flask and placed on a heat-collecting magnetic stirrer, and 25% sodium hydroxide was added dropwise while stirring in an ice-water bath The solution was neutralized until the pH value was between 6-7, and then 9.0 grams of purified sepiolite, 60.0 grams of acrylamide, 0.63 grams of cross-linking agent N, N'-methylenebisacrylamide, 0.9 grams of hydrogen peroxide were added, at 65 The polymerization reaction was carried out in a water bath thermostat at ℃ for 3 hours, and the samples were dried, pulverized, and vacuum-dried, and then bagged for later use. Prepare 1000 grams of Na 2 SO 4 10H 2 A saturated aqueous solution of O, then add 2.0 grams of the synthesized water-absorbing resin, and after the water absorption rate no longer changes, filter out the water-absorbing resin, freeze-dry and ...

Embodiment 2

[0025] Under the protection of nitrogen, 30.0 grams of acrylic acid, which was distilled under reduced pressure to remove the polymerization inhibitor, was added to a 250 mL three-necked flask and placed on a heat-collecting magnetic stirrer, and 25% sodium hydroxide was added dropwise while stirring in an ice-water bath The solution was neutralized until the pH value was between 6-7, and then 10.8 grams of purified sepiolite, 37.5 grams of acrylamide, 0.54 grams of cross-linking agent N, N'-methylenebisacrylamide, 1.08 grams of hydrogen peroxide were added, at 65 The polymerization reaction was carried out in a water bath thermostat at ℃ for 3 hours, and the samples were dried, pulverized, and vacuum-dried, and then bagged for later use. Prepare 1000 grams of Na 2 SO 4 10H 2 O saturated aqueous solution, then add 3.0 g of the synthesized water-absorbing resin, after the water absorption rate no longer changes, filter out the water-absorbing resin, freeze-dry and pulverize t...

Embodiment 3

[0027] Under the protection of nitrogen, 40.0 grams of acrylic acid, which has been distilled off under reduced pressure to remove the polymerization inhibitor, was added to a 250 mL three-necked flask and placed on a heat-collecting magnetic stirrer, and 25% sodium hydroxide was added dropwise while stirring in an ice-water bath. The solution was neutralized until the pH value was between 6-7, and then 16.0 grams of purified sepiolite, 40.0 grams of acrylamide, 0.96 grams of cross-linking agent N, N'-methylenebisacrylamide, and 1.6 grams of hydrogen peroxide were added, at 65 The polymerization reaction was carried out in a water bath thermostat at ℃ for 3 hours, and the samples were dried, pulverized, and vacuum-dried, and then bagged for later use. Prepare 1000 grams of Na 2 SO 4 10H 2 A saturated aqueous solution of O, then add 2.0 grams of the synthesized water-absorbing resin, and after the water absorption rate no longer changes, filter out the water-absorbing resin, ...

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Abstract

The invention provides a preparation method of an inorganic-organic composite phase-change energy storage material for buildings. The preparation method comprises the purification of diatomite, the preparation of polyacrylic acid-polyacrylamide-sepiolite composite water-absorbing resin and the preparation of a super absorbent resin-inorganic hydrous salt Na2SO4.10H2O composite phase-change energy storage material. The inorganic-organic composite phase-change energy storage material is mixed with building mortar in a certain ratio and then applied to an exterior wall coating, and after solidification, the coating has the function of phase-change energy storage and is also capable of preventing the exterior wall from cracking. Performance tests indicate that the inorganic-organic composite phase-change energy storage material prepared by use of the method has a phase-change temperature at 32.5 DEG C and is still kept stable in a temperature regulating function after heat absorption and heat release for a plurality of times. The phase-change energy storage material prepared by use of the method is mixed with the building mortar to be be widely applied to the exterior wall coatings of the buildings.

Description

technical field [0001] The invention relates to a preparation method of an inorganic-organic composite phase change energy storage material for building, belonging to the technical field of building materials. Background technique [0002] Phase change energy storage materials were first studied by Telkes and Raymond in the 1940s. In the following decades, especially after the outbreak of the world energy crisis in the 1970s, researchers in developed countries applied them in different fields and stored latent heat. In-depth study of thermal behavior. At the same time, with the development of science and technology, the interpenetration and connection between various disciplines are increasingly strengthened, such as material science, building heating, solar energy technology, etc., which greatly expands the application range of phase change materials, and its application fields involve industry, agriculture, etc. And various civil facilities, including building energy stor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/06C08F220/06C08F220/56C08F222/38C04B28/00
CPCC09K5/063
Inventor 董晓娜陈衍华游胜勇谌开红王云敏涂迎青何国晴林鸿业
Owner INST OF APPLIED CHEM JIANGXI ACAD OF SCI
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