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Preparation method of building heat insulation coating based on phase-change heat storage

A technology for building thermal insulation and phase change heat storage, which is applied to heat exchange materials, thermal insulation, building components, etc. It can solve the problems of easy corrosion, overcooling and volatilization of inorganic salts, and achieve excellent thermal insulation performance and good mechanical properties.

Inactive Publication Date: 2018-06-19
DONGGUAN LIANZHOU INTPROP OPERATION MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, inorganic salts are prone to supercooling, which limits their application.
Molten salt phase change heat storage materials also have good heat storage performance, but pure molten salt phase change materials are prone to leakage, high temperature, corrosion, and volatilization during use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for preparing a building insulation board based on phase change heat storage, comprising the following steps:

[0026] (1) Sodium carbonate and potassium carbonate are mixed and added to deionized water in a ratio of 50% and 50% by mass percentage respectively, stirred at 1500 rpm until the solid dissolves, the prepared mixed solution is placed in an oven for drying, ground, and prepared To obtain the hydrated eutectic salt, 75 parts of the prepared hydrated eutectic salt and 17 parts of magnesium oxide are mixed, placed in a ball mill, ball milled at 180r / min for 1.5h, and sieved after ball milling to obtain the hydrated eutectic salt / Magnesium oxide composite material;

[0027] (2) Magnesium oxide and PVB solution with a mass concentration of 4% are mixed and ground in a mass ratio of 1:1.5, then placed in an oven for drying, and then ground to obtain a pretreated magnesium oxide powder; the pretreated magnesium oxide Put the powder in the mold, scrape it f...

Embodiment 2

[0032] A method for preparing a building insulation board based on phase change heat storage, comprising the following steps:

[0033] (1) Sodium carbonate and potassium carbonate are mixed and added to deionized water at a ratio of 55% and 45% by mass percentage respectively, stirred at 1500 rpm until the solid dissolves, and the prepared mixed solution is dried in an oven, ground, and prepared To obtain the hydrated eutectic salt, 83 parts of the prepared hydrated eutectic salt and 25 parts of magnesium oxide are mixed, placed in a ball mill, ball milled at 220r / min for 1.5h, and sieved after ball milling to obtain the hydrated eutectic salt / Magnesium oxide composite material;

[0034] (2) Magnesium oxide and PVB solution with a mass concentration of 4% are mixed and ground in a mass ratio of 1:3, then placed in an oven for drying, and then ground to obtain pretreated magnesium oxide powder; the pretreated magnesium oxide Put the powder in the mold, scrape it flat, then pu...

Embodiment 3

[0039] A method for preparing a building insulation board based on phase change heat storage, comprising the following steps:

[0040] (1) Sodium carbonate and potassium carbonate are mixed and added to deionized water at a ratio of 51% and 49% by mass percentage respectively, stirred at 1500 rpm until the solid dissolves, and the prepared mixed solution is dried in an oven, ground, and prepared To obtain the hydrated eutectic salt, 77 parts of the prepared hydrated eutectic salt and 18 parts of magnesium oxide are mixed, placed in a ball mill, ball milled at 190r / min for 1.6h, and sieved after ball milling to obtain the hydrated eutectic salt / Magnesium oxide composite material;

[0041](2) Magnesium oxide and PVB solution with a mass concentration of 4% are mixed and ground in a mass ratio of 1:1.5, then placed in an oven for drying, and then ground to obtain a pretreated magnesium oxide powder; the pretreated magnesium oxide Put the powder in the mold, scrape it flat, then...

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Abstract

The invention discloses a preparation method of a building heat insulation plate based on phase-change heat storage. The preparation method comprises the following steps of firstly, using magnesium oxide and hydrated eutectic salt as raw materials to prepare an inner core, wherein the hydrated eutectic salt is prepared from sodium carbonate and potassium carbonate; using the pre-treated magnesiumoxide powder as an outer casing, so as to obtain the phase-change heat storage material; sequentially adding polypropylene, a heat stabilizer, a defoamer, a lubricant and a plasticizer into a high-speed mixer, and kneading for 10min at the temperature of 120 DEG C; adding carbon fiber and a surfactant, and continuing to knead for 5min; enabling a double-screw extruder to extrude and granulate, andperforming compression molding, so as to obtain a plastic thin plate; using the obtained plastic thin plates as the upper surface and lower surface, using the phase-change heat storage material as amiddle layer, adhering by an adhesive, pressing, and drying, so as to obtain the building heat insulation plate. The prepared building heat insulation plate has the advantages that the stability is good; the heat storage and heat insulation properties are excellent; the preparation is simple, and the cost is low.

Description

Technical field: [0001] The invention relates to the field of building materials, in particular to a preparation method of a building thermal insulation coating based on phase change heat storage. Background technique: [0002] Energy storage materials are one of the important means to improve energy utilization. Phase change thermal storage materials are a mainstream research direction of energy storage materials, which are widely used in spacecraft thermal control, building energy conservation, solar thermal utilization, chip cooling and other fields. Inorganic salt phase change heat storage materials are currently the most widely used phase change heat storage materials due to their wide temperature range, easy control of the heat storage process, and low price. However, inorganic salts are prone to supercooling, which limits their applications. Molten salt phase change heat storage materials also have good heat storage performance, but pure molten salt phase change mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/10B32B37/12B32B27/06B32B27/32B32B7/12B32B33/00E04B1/80C09K5/06C08L23/12C08K7/06
CPCB32B37/10B32B7/12B32B27/06B32B27/32B32B33/00B32B37/1284B32B2250/40B32B2307/304B32B2419/00C08K7/06C09K5/063E04B1/80C08L23/12
Inventor 陈东进
Owner DONGGUAN LIANZHOU INTPROP OPERATION MANAGEMENT CO LTD