Double-phase-change energy storage self-cleaning wall material and application thereof

A wall material and dual-phase transition technology, applied in the direction of building materials, heat exchange materials, chemical instruments and methods, etc., can solve the problems of water pollution, emulsifier cannot be recycled, leakage, etc., and the preparation method is simple and efficient. More and more, the effect of extending the service life

Inactive Publication Date: 2019-06-21
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention can store energy in the form of latent heat of phase change to realize the conversion of energy between different space-time positions; the polymerizable emulsifier with double bonds is selected and becomes a part of the capsule after the reaction, which solves the problem that traditional emulsifiers cannot Recycling, the shortcomings of water pollution caused by attachment to the water body after demulsification, taking into account product performance and environmental friendliness; compared with traditional large-scale materials, it can increase the heat transfer area, improve energy utilization efficiency, and solve the phase change to a certain extent Material leakage problem; the surface of the material is coated with a superhydrophobic coating, which can achieve the purpose of self-cleaning surface

Method used

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  • Double-phase-change energy storage self-cleaning wall material and application thereof
  • Double-phase-change energy storage self-cleaning wall material and application thereof
  • Double-phase-change energy storage self-cleaning wall material and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Mix 2g of polymerizable emulsifier allyloxynonylphenol polyoxyethylene (10) ether ammonium sulfate (DNS-86) with 80g of deionized water, and use a high-speed disperser to shear at a speed of 5000rpm for 15min. Then it was added into an ultrasonic cell disruptor, and dispersed for 15 minutes at an amplitude of 60%, to obtain an aqueous phase; wherein, the mass of the emulsifier was 2.4% of the mass of the aqueous phase. 6.6g of monomer (styrene: divinylbenzene=80%:20%), 13.4g of n-octadecane (n-ODE) and 0.2g of initiator azobisisobutyronitrile (AIBN) were mixed, Keep the temperature in a water bath at 30°C for 30 minutes to form an oil phase. The water phase was poured into the oil phase, stirred at a speed of 5000 rpm for 15 min, and the pre-emulsion was emulsified with an amplitude of 60% for 30 min using an ultrasonic cell breaker to obtain a fine emulsion. Pour the mini-emulsion into a 250ml four-neck flask, which has a feed port, a mechanical stirrer, a nitrogen in...

Embodiment 2

[0085] Mix 2g of polymerizable emulsifier allyloxynonylphenol polyoxyethylene (10) ether ammonium sulfate (DNS-86) with 85g of deionized water, and use a high-speed disperser to shear at a speed of 5000rpm for 15min. Then it was added into an ultrasonic cell breaker, and dispersed for 20 minutes at an amplitude of 60%, to obtain a water phase; wherein, the mass of the emulsifier was 2.3% of the mass of the water phase. With 8g monomer (styrene: divinylbenzene=70%: 30%), the n-octadecane (n-ODE) of 16g ​​and the initiator azobisisobutyronitrile (AIBN) of 0.5g are mixed, at 30 ℃ in a water bath for 30 min to form an oil phase. The water phase was poured into the oil phase, stirred at a speed of 5000 rpm for 15 min, and the pre-emulsion was emulsified with an amplitude of 60% for 30 min using an ultrasonic cell breaker to obtain a fine emulsion. Pour the miniemulsion into a 250ml four-neck flask, which has a feed port, a mechanical stirrer, a nitrogen inlet and a reflux port, pu...

Embodiment 3

[0090] Mix 2.5g of polymerizable emulsifier allyloxynonylphenol polyoxyethylene (10) ether ammonium sulfate (DNS-86) with 85g of deionized water, and use a high-speed disperser to shear at a speed of 5000rpm for 15min. Then it was added into an ultrasonic cell disruptor, and dispersed for 15 minutes at an amplitude of 60%, to obtain a water phase; wherein, the mass of the emulsifier was 2.8% of the mass of the water phase. With 8g monomer (styrene: divinylbenzene=70%: 30%), the n-octadecane (n-ODE) of 18g and the initiator azobisisobutyronitrile (AIBN) of 0.3g are mixed, at 30 ℃ in a water bath for 30 min to form an oil phase. The water phase was poured into the oil phase, stirred at a speed of 5000 rpm for 15 min, and the pre-emulsion was emulsified with an amplitude of 60% for 30 min using an ultrasonic cell breaker to obtain a fine emulsion. Pour the mini-emulsion into a 250ml four-neck flask, which has a feed port, a mechanical stirrer, a nitrogen inlet and a reflux port,...

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Abstract

The invention discloses a double-phase-change energy storage self-cleaning wall material and an application thereof. The material is a plate comprising a first nanocapsule, a second nanocapsule and abuilding carrier material, and the surface of the plate is a hydrophobic material layer; a super-hydrophobic coating is a substance formed after a coated dispersing liquid is dried; the dispersing liquid is a strawberry-like organic / inorganic hybrid microsphere dispersing liquid; each of the first nanocapsule and the second nanocapsule comprises a main material, a monomer, an initiator and an emulsifier; the first nanocapsule and the second nanocapsule are different in composition of the main material and are two different higher alkanes including hexadecane, heptadecane, octadecane and eicosane. The defects that traditional emulsifiers cannot be recovered and attached to water bodies after demulsification to cause water pollution are overcome; more flexible temperature control can be realized; the super-hydrophobic coating applied to the surface can prevent pollution and resist bioadhesion, and the surface self-cleaning purpose can be achieved.

Description

technical field [0001] The invention relates to the field of environment-friendly building materials, in particular to a dual-phase change energy storage self-cleaning material and a preparation method thereof. Background technique [0002] Energy is the basis for human survival and development. With the development of science and technology, human's demand for energy is increasing day by day, but the fossil energy on which human beings depend for survival is limited. According to the BP World Energy Statistical Yearbook released in June 2013, the world's remaining oil resources can only be exploited 52.9% In 2010, the necessity of energy saving and emission reduction became increasingly prominent. [0003] With the continuous improvement of people's living standards, the energy consumption (including cooling and heating) costs of buildings where people live and work are getting higher and higher. Phase change energy storage technology is a technology that realizes energy ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06E04C2/26
Inventor 张旭李明坤赵满相尹雅萱王小梅
Owner HEBEI UNIV OF TECH
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