Preparation method of clay-based composite phase-change energy storage deicing (snow melting) material
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A technology of composite phase change and energy storage materials, applied in the field of preparation of clay-based composite phase change energy storage deicing materials, can solve the problems of high maintenance cost, low work efficiency, high work intensity and the like
Inactive Publication Date: 2017-11-21
CENT SOUTH UNIV
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Problems solved by technology
This method has obvious effects, but it is high in manpower and equipment investment, low in work efficiency, high in work intensity, and not durable. It can only be used as an emergency treatment plan, and it is difficult to popularize; Converting it into heat energy or using the thermal effect of natural energy such as solar energy to prevent freezing, and then achieve the effect of melting ice. This method has the disadvantages of large initial cost investment and high maintenance costs; The surface of the material is coated with a layer of paint with anti-icing and ice-melting effects, so as to achieve the effect of melting and deicing. A single use of anti-icing paint can have a good effect in the early stage, but in the atmospheric environment due to The composition of the air medium is complex and the climate environment is changeable. It is difficult to prevent the formation of water crystallization nuclei on the surface with a single hydrophobicity. Once the substrate has begun to be covered with ice, superhydrophobicity will not be able to play a role
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Embodiment 1
[0021] Get 10g of 200 mesh montmorillonite and place it on the bottom of the conical flask, then connect the vacuum pump to vacuumize the conical flask, open the phase change material 30g filled with methyl laurate and slowly add it dropwise to complete, then continue to keep the vacuum for 30min, put The obtained composite phase change material is filtered at 60°C to remove excess methyl laurate loaded on the surface of the montmorillonite, dried, and ground through a 200-mesh sieve to obtain a montmorillonite-based methyl laurate composite phase change material .
Embodiment 2
[0023] Take 200 mesh montmorillonite 10g and place it at the bottom of the Erlenmeyer flask, then connect the vacuum pump to vacuumize the Erlenmeyer flask, open the phase-change material containing decanol 30g and slowly add it dropwise until complete, and then continue to maintain the vacuum for 30min to obtain a composite The phase change material is filtered at 60°C to remove excess decanol loaded on the surface of the montmorillonite, dried, and ground through a 200-mesh sieve to obtain a montmorillonite-based decanol composite phase change material.
Embodiment 3
[0025] Take 200 mesh kaolinite 10g and place it at the bottom of the conical flask, then connect the vacuum pump to vacuumize the conical flask, open the phase change material containing methyl laurate 30g and slowly add it dropwise until completely, then continue to keep the vacuum for 30min, The obtained composite phase change material is filtered at 60°C to remove excess methyl laurate loaded on the surface of kaolinite, dried, and ground through a 200-mesh sieve to obtain a kaolinite-based methyl laurate composite phase change material .
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Abstract
The invention discloses a preparation method of a clay-based composite phase-change energy storage deicing (snow melting) material. The preparation method is characterized in that a composite phase-change energy storage material is prepared from a low-temperature organic phase-change material and a clay material, wherein the low-temperature organic phase-change material is prepared by single-element or multi-element mixing of various organic phase-change materials and is then physically compounded with the treated clay to prepare the clay-based composite phase-change energy storage deicing (snow melting) material. The low-temperature organic phase-change material is selected from polyethylene glycol-300, polyethylene glycol-400, polyethylene glycol-500, polyethylene glycol-600, decyl alcohol, undecanol, dodecanol, heptylic acid, octanoic acid, nonanoic acid, capric acid, methyl laurate, methyl myristate, methyl palmitate, tetradecane, pentadecane, hexadecane, heptadecane, octodecane, nonadecane and the like. The clay material is selected from kaolinite, montmorillonite, bentonite, vermiculite, halloysite, sepiolite, attapulgite, perlite, diatomite, rectorite, zeolite, silicon dioxide, dolomite, calcite and illite. The prepared composite phase-change energy storage deicing (snow melting) material is proper in phase-change temperature (0-5 DEG C), high in phase-change latent heat and high in heat stability.
Description
technical field [0001] The invention relates to a preparation method of a clay-based composite phase change energy storage deicing (snow melting) material, specifically disclosing a method of using a single or multiple composite organic matter as an energy storage phase change material and a clay material as a carrier through physical compounding The prepared material can be used to realize the deicing (snow melting) of buildings such as roads, bridges and walls. Background technique [0002] In winter, when the temperature is low, it is very common for roads, bridges and the outer walls of houses to experience snow and ice. For roads and bridges, under the repeated action of vehicle loads below 0 °C, the snow is compacted and the surface adhesion coefficient of the road or bridge deck is greatly reduced, which seriously affects the safety of road traffic. In addition, the long-term exposure of road surfaces, bridge decks and building periphery to low temperature environmen...
Claims
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