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Phase change energy storage powder for building energy saving and preparation method thereof

A phase-change energy storage and building energy-saving technology, which is applied in the direction of chemical instruments and methods, heat exchange materials, etc., can solve the performance degradation of building materials, the reduction of energy storage density of phase-change composite materials, and unsatisfactory compatibility, etc. problems, to achieve the effect of solving leakage and broadening the scope of adaptation

Active Publication Date: 2016-10-12
宁波运通新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the energy storage performance, supercooling, fire resistance, and compatibility with other building materials of these materials are still unsatisfactory.
Due to the use of a large number of carriers in the finalization of phase change materials, it is easy to reduce the energy storage density of phase change composite materials, which will inevitably lead to the need to add more phase change materials. performance degradation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Surface modification of phase change materials: 40 parts by weight of calcium chloride hexahydrate, 45 parts by weight of sodium sulfate decahydrate phase change materials, 0.1 parts by weight of sodium metaaluminate, 2 parts by weight of glycerin fatty acid The ester is refined into a powder with a particle size of less than 2 μm to obtain a modified phase change material;

[0040] (2) Extrusion coating: Mix the modified phase change material obtained in step (1) with 12 parts by weight of ethylene-vinyl acetate copolymer, 2 parts by weight of aluminum powder, and 0.5 parts by weight of antioxidant 1010 at high speed Disperse evenly in the machine, and then send it to the screw extruder. The temperature setting method of the screw extruder is: 50°C~60°C for the first to third zones; 6°C~80°C for the fourth to sixth zones; 50°C~60°C for the seventh to ninth zones The tenth zone is 40°C; the screw speed is 50~100r / min; the material enters from the first zone and is e...

Embodiment 2

[0044] (1) Surface modification of phase change materials: 50 parts by weight of disodium hydrogen phosphate dodecahydrate, 30 parts by weight of sodium acetate trihydrate, 0.2 parts by weight of sodium borate anti-supercooling agent, 3 parts by weight of titanic acid The ester couple is refined into a powder with a particle size of less than 2 μm to obtain a modified phase change material;

[0045] (2) Extrusion coating: Mix the modified phase change material obtained in step (1) with 10 parts by weight of polypropylene wax, 1 part by weight of graphite powder as a heat-conducting agent, and 0.8 parts by weight of barium laurate stabilizer at high speed Disperse evenly in the machine, and then send it into the twin-screw extruder. The temperature setting method of the screw extruder is: 50℃~60℃ for the first to third zones; 6℃~80℃ for the fourth to sixth zones; 50℃~ for the seventh to ninth zones 60°C; 40°C in the tenth zone; the screw speed is 50~100r / min; the material enter...

Embodiment 3

[0049] (1) Surface modification of phase change materials: 35 parts by weight of sodium sulfate decahydrate, 45 parts by weight of sodium acetate trihydrate, 0.3 parts by weight of anti-supercooling agent potassium pyroantimonate, 2 parts by weight of polyoxyethylene Fatty acid glycerides are refined into powders with a particle size of less than 2 μm to obtain modified phase change materials;

[0050] (2) Extrusion coating: the modified phase change material obtained in step (1) is mixed with 8 parts by weight of rosin, 2 parts by weight of copper powder of thermal conductivity agent, and 0.6 parts by weight of stabilizer and antioxidant DLTP in a high-speed mixer Evenly dispersed in the medium, and then sent to the screw extruder, the temperature setting method of the screw extruder is: 50°C~60°C for the first to third zones; 6°C~80°C for the fourth to sixth zones; 50°C~60°C for the seventh to ninth zones; The tenth zone is 40°C; the screw speed is 50~100r / min; the material ...

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Abstract

Relating to the field of building energy-saving materials, the invention provides a phase change energy storage powder for building energy saving and a preparation method thereof. The phase change energy storage powder is characterized by containing an anti-supercooling agent and a powder type energy storage material subjected to screw extrusion coating, and is prepared from, by weight, 80-85 parts of a phase change material, 2-3 parts of an active agent, 0.1-0.3 part of an anti-supercooling agent, 8-12 parts of a wrapping agent, 1-2 parts of a thermal conductive agent, 0.5-1 part of a stabilizer, and 2-3 parts of a flame retardant. The phase change energy storage powder has the advantages of high energy storage density and no supercooling phenomenon, flame retardance, and excellent compatibility with most building materials, can be added in large quantities without affecting the strength of building materials, and is applicable to concrete, mortar, putty, paint and the like.

Description

technical field [0001] The invention relates to the field of building energy-saving materials, in particular to a phase-change energy storage powder for building energy saving and a preparation method thereof. Background technique [0002] my country is a big energy-consuming country, and building energy consumption accounted for 35% of total social energy consumption in 2015, up from 10% in the late 1970s. Every year, the construction area of ​​new urban and rural housing is nearly 2 billion square meters, of which more than 80% are high-energy-consuming buildings; the existing buildings are nearly 40 billion square meters, and more than 95% are high-energy-consuming buildings. With the rapid development of my country's urbanization and real estate industry, the pressure on environmental protection, resource utilization and energy supply is also increasing. Taking the road of building energy conservation is the inevitable development trend of buildings in my country and ev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06C09K5/14
CPCC09K5/06C09K5/063C09K5/14
Inventor 陈庆曾军堂
Owner 宁波运通新材料科技有限公司
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