JP2021155480A - Latent heat storage material composition - Google Patents

Abstract

To provide a latent heat storage material composition which causes no leakage of a latent heat storage material in use even in a heat storage state, making it possible to carry out storage of latent heat and heat release thereof.SOLUTION: A latent heat storage material composition 1 is formed by mixing a latent heat storage material 10 that uses latent heat input/output to carry out heat storage or heat release thereof, and a clay material 20 that is a clay-like silicone clay material composed mainly of silicone. The latent heat storage material 10 is an organic compound of an anhydride having physical properties causing a phase transition between solid phases.SELECTED DRAWING: Figure 1

Description

The present invention relates to a latent heat storage material composition obtained by mixing a polymer material with a latent heat storage material that stores heat or dissipates heat by utilizing the inflow and outflow of latent heat accompanying a solid phase transition.

The latent heat storage material has the property of being able to store heat by utilizing the inflow and outflow of latent heat that accompanies the phase change. After temporarily storing the heat provided by the heat supply source, it is stored at the heat demand destination. It is used for the purpose of utilizing the thermal energy of the latent heat with the time difference. Among such substances, ammonium alum twelve dihydrate _{(AlNH 4 (SO 4) 2} · 12H 2 O) as such, latent heat storage material that performs a phase change between liquid and solid phases (PCM : Phase Change Material) is widely known. This latent heat storage material stores latent heat when it melts from the solid phase to the liquid phase at its melting point, and dissipates the latent heat when it solidifies from the liquid phase to the solid phase. The latent heat storage material is generally used by filling it in a dedicated container or bag, but in some markets, the latent heat storage material is filled in microcapsules for an object that requires latent heat. There is also a need to use latent heat storage materials.

However, conventional microcapsules do not have sufficient strength and are easily damaged for some reason. Therefore, when the latent heat storage material is housed in the microcapsules and used, the melt of the latent heat storage material may leak from the microcapsules during use. Therefore, Patent Document 1 is disclosed as an example of a technique for improving the strength of microcapsules.

Patent Document 1 is a microcapsule of a phase-changing substance enclosed in a natural microtubule and its preparation. It is a technique in which a phase-changing substance is encapsulated in a cut microtubule and then the cut microtubule is coated with a polymer. be. The cut microtubule is formed by cutting a hollow natural fiber having a diameter in the range of 0.1 μm to 1000 μm into a fiber fragment having a length in the range of 0.1 mm to 5 cm. Natural fibers are kapok fiber, towata fiber, loofah fiber, bamboo fiber, tex bamboo fiber, flax fiber, hair, and down. The phase-changing substance is a solid-liquid phase-changing substance or a solid-solid-phase changing substance, and the solid-solid-phase changing substance is an inorganic salt, a polyol, or a crosslinked polymer resin.

Japanese Patent No. 5180171

However, in Patent Document 1, in order to prepare a microencapsulated phase change substance, natural fibers such as kapok fiber, which are difficult to procure in recent years, are indispensable, and a complicated manufacturing process is required. Therefore, the technique of Patent Document 1 is used in a mode in which a latent heat storage material is filled in microcapsules because the cost is high and it is difficult to put it into practical use in actually using the microencapsulated phase change substance. It is not a drastic solution to the market needs of wanting to.

The present invention has been made to solve the above problems, and a latent heat storage material composition capable of storing latent heat and dissipating heat without leakage of the latent heat storage material during use even when it is in a heat storage state. The purpose is to provide things.

In order to achieve the above object, the latent heat storage material composition according to the present invention has the following constitution.
(1) A latent heat storage material that stores heat or dissipates heat by utilizing the inflow and outflow of latent heat and a clay material that can be kneaded with the latent heat storage material and has plasticity are blended to form the latent heat storage material. The material is characterized by being an anhydrous organic compound having physical properties with a phase transition between solid phases.
(2) In the latent heat storage material composition according to (1), the latent heat storage material is an organic compound having a plurality of methylol groups.
(3) In the latent heat storage material composition described in (2), the latent heat storage material is _{a natural number having a chemical formula [(CH 3} ) _4-n C (CH ₂ OH) _n )] (n is 2 ≦ n ≦ 4. ) Is an organic compound.
(4) In the latent heat storage material composition according to (3), the latent heat storage material is trimethylolethane [CH ₃ C (CH ₂ OH) ₃ ].
(5) In the latent heat storage material composition according to any one of (1) to (4), the clay material is a clay-like silicone clay material containing silicone as a main component. ..

The action and effect of the latent heat storage material composition according to the present invention having the above structure will be described.
(1), (2) A latent heat storage material that stores heat or dissipates heat by utilizing the inflow and outflow of latent heat, and a clay material that can be kneaded with the latent heat storage material and has plasticity are mixed. The latent heat storage material is characterized by being an anhydrous organic compound having physical properties with a phase transition between solid phases, such as an organic compound having a plurality of methylol groups.

Due to this feature, the latent heat storage material composition according to the present invention can hold the latent heat storage material having heat storage and heat dissipation performance without leaking due to the clay material, and can be used as an accommodating tool such as a microcapsule, a bag, or a container. Can be used as it is by arranging it as it is on a latent heat supply object that requires latent heat, without requiring any storage treatment. Moreover, since the latent heat storage material composition according to the present invention has physical properties that can be freely molded according to the shape of the latent heat supply object, it can be coated in close contact with the latent heat supply object. Therefore, the loss of latent heat entering and exiting between the latent heat storage material composition according to the present invention and the latent heat supply target can be suppressed, and the heat retention and cold retention of the latent heat supply target can be enhanced.

Therefore, according to the latent heat storage material composition according to the present invention, even when the heat storage material is in a heat storage state, the latent heat storage material does not leak during use, and the latent heat can be stored and dissipated. ..

In the latent heat storage material composition described in (3) and (4), the latent heat storage material is, for example, a chemical formula [(CH _{3 ), as listed in trimethylolethane [CH 3} C (CH ₂ OH) _{3] and the like.} ) _4-n C (CH ₂ OH) _n )] (n is a natural number of 2 ≦ n ≦ 4).

Due to this feature, the latent heat storage material composition according to the present invention has physical properties having heat storage and heat dissipation performance due to the solid phase transition of the latent heat storage material kneaded with the clay material, and therefore heat from the heat supply source. In addition to storing the latent heat in, the stored latent heat can be dissipated at the heat demand destination.

In the latent heat storage material composition described in (5), the clay material is a clay-like silicone clay material containing silicone as a main component.

Due to this feature, clay materials are widely distributed in the market, easily available, and inexpensive.

It is a figure which shows typically the constituent components of the latent heat storage material composition which concerns on embodiment. In the solid phase transition occurring in the latent heat storage material composition according to the embodiment, the state of the first solid phase state which is a solid state capable of storing heat and the state of the second solid phase state which is a solid state capable of radiating heat. Is a diagram schematically showing each. For the latent heat storage material composition according to the embodiment, the phase transition point and the amount of heat stored from the first solid phase state to the second solid phase state, and the second solid phase state to the first solid phase state. It is a graph which shows the phase transition point and the amount of heat dissipation of, and is the graph which shows the experimental result when the latent heat storage material is trimethylol ethane. It is a figure which shows typically the state which is in a liquid phase state and the state which is in a solid state by the phase change of the latent heat storage material filled in a microcapsule, and is the figure which shows the state of a latent heat storage material in a liquid phase, respectively. It is a figure which shows the state which the melt is leaking to the outside from a microcapsule.

Hereinafter, embodiments of the latent heat storage material composition according to the present invention will be described in detail with reference to the drawings.

In the latent heat storage material composition according to the present invention, a latent heat storage material that stores heat or dissipates heat by utilizing the inflow and outflow of latent heat and a clay material such as a clay-like silicone clay material containing silicone as a main component are kneaded. It is a composite material. The latent heat storage material is an anhydrous organic compound having physical properties with a phase transition between solid phases.

The latent heat storage material composition according to the present invention temporarily stores latent heat in the latent heat storage material by the heat supplied from the heat supply source, and then releases the latent heat energy from the latent heat storage material at the heat demand destination. Is used for the purpose of utilizing with the time difference. In this latent heat storage material composition, the stored heat can be taken out as needed by utilizing the inflow and outflow of latent heat accompanied by the solid phase transition, and the cycle of heat storage and its heat dissipation is repeated a plurality of times.

First, the latent heat storage material composition 1 will be described. FIG. 1 is a diagram schematically showing constituent components of the latent heat storage material composition according to the embodiment. As shown in FIG. 1, the latent heat storage material composition 1 according to the present embodiment is formed by blending the latent heat storage material 10 and the clay material 20. The clay material 20 is a substance that has plasticity, can be kneaded with the kneaded solid latent heat storage material 10, and can be easily formed into a three-dimensional shape, such as clay. In the present embodiment, the clay material 20 is a clay-like silicone clay material containing silicone as a main component, as described above. The clay material 20 itself does not have the heat storage / heat dissipation performance of radiating the stored heat.

Specifically, the clay material 20 is generally used as a toy for children and teaching materials for school children, such as the silicone rubber clay composition disclosed in Japanese Patent Application Laid-Open No. 5-39420. It is a well-known material widely used in clay. Like rubber clay, the clay material 20 can be freely molded into a desired shape and can retain the shape, and can be used repeatedly even after the molding. Further, the clay material 20 is a substance that is harmless to the human body in terms of safety and hygiene, has no offensive odor, and does not become brittle even when exposed to sunlight, wind, or the like.

The latent heat storage material 10 is an anhydride having physical properties accompanied by a phase transition between solid phases, and in the present embodiment, it is an organic compound having a plurality of methylol groups. Specifically, the latent heat storage material 10 contains _{3 methylol groups among the organic compounds having the chemical formula [(CH 3} ) _4-n C (CH ₂ OH) _n )] (n is a natural number of 2 ≦ n ≦ 4). _{Trimethylolethane [CH 3} C (CH ₂ OH) ₃ ] having one (n = 3).

Trimethylolethane is a kind of polyhydric alcohol and is a substance that is safe for the human body as it is also used as a food additive. Trimethylolethane alone is a solid that forms white crystals at a molecular weight [g / mol] of 120.15, a freezing point of 199 to 201 ° C., and a temperature lower than the freezing point, and exhibits a stable composition although undergoing a solid phase transition. Has physical properties that are soluble in water.

In this embodiment, the latent heat storage material 10 is trimethylolethane. However, in addition to trimethylolethane, the latent heat storage material can be, for example, _{neopentyl glycol [(CH 3} ) _4-n C (CH ₂ OH) _n )] in the case of n = 2 in the above-mentioned chemical formula [(CH 3) 4-n C (CH 2 OH) n)]. CH ₃ ) ₂ C (CH ₂ OH) ₂ ], pentaerythritol [C (CH ₂ OH) ₄ ] in the case of n = 4, and the like. Further, the latent heat storage material is composed of an organic compound having a plurality of methylol groups and a derivative in which the hydrogen atom of the methyl group [CH _{3 ] in the methylol group [CH 2} OH] is replaced with, for example, F or the like. It may be an anhydride material having physical properties accompanied by a phase transition between solid phases.

The content ratio of the latent heat storage material 10 (trimethylolethane) in the total weight of the latent heat storage material composition 1 is not particularly limited, and the larger the content ratio of the latent heat storage material 10 is, the more the latent heat storage material 10 is contained. The heat storage / heat dissipation performance of the entire composition 1 is improved. However, if the content ratio of the latent heat storage material 10 is much higher than 80 wt% as an example, and the content ratio of the latent heat storage material 10 is too large with that of the clay material 20, the latent heat storage material composition 1 contains. Then, the content of the clay material 20 is relatively small. Therefore, the latent heat storage material 10 is not sufficiently kneaded with the clay material 20.

As a result, the latent heat storage material composition 1 may not be formed into a desired shape. Alternatively, even if the latent heat storage material composition 1 can be molded into a desired shape, there is a possibility that the molded shape cannot be maintained. Therefore, the upper limit of the content ratio of the latent heat storage material 10 in the total weight of the latent heat storage material composition 1 is preferably suppressed to about 80 wt% as an example.

Next, for the purpose of verifying the significance of the latent heat storage material composition 1, a verification experiment was conducted to confirm the behavior of heat storage and the behavior of heat dissipation in the latent heat storage material composition 1. The experiment is an experiment performed on a sample using the latent heat storage material composition 1 according to the example.

(Example)
In the latent heat storage material composition 1 according to the embodiment, 1.6 g of trimethylolethane anhydride (latent heat storage material 10) as a main component and 0.8 g of clay material 20 as a silicone clay material are kneaded. Become. The content ratio of the latent heat storage material 10 in the total weight of the latent heat storage material composition 1 is 33 wt%.

<Experimental method>
In the verification experiment, about 10 mg of a sample was taken from the latent heat storage material composition, filled in an aluminum container, the lid was sealed, and this aluminum was placed in the measurement room of a well-known differential scanning calorimetry (DSC). The container was allowed to stand, and 50 ml / min. The amount of heat stored in the sample and the amount of heat dissipated from the sample were measured under the condition of nitrogen flow. Specifically, the sample was prepared at 2 ° C./min from 30 ° C. to 95 ° C. It was heated at the heating rate of. Then, the sample was kept warm at 95 ° C. for 20 minutes from the time when the sample reached 95 ° C. During this period, the amount of latent heat stored in the sample was measured to determine the amount of heat stored in the sample.

Then, 20 minutes after the start of heat retention of the sample, the sample kept warm at 95 ° C. was cooled to 2 ° C./min. It was cooled at the rate of temperature decrease. Then, the sample was kept warm at 30 ° C. for 40 minutes from the time when the sample reached 30 ° C. While the sample was cooled to 30 ° C., the amount of latent heat radiated from the sample was measured to determine the amount of heat radiated from the sample.

<Experimental results>
FIG. 2 shows a solid phase transition occurring in the latent heat storage material composition according to the embodiment, in which a first solid phase state is a solid state capable of storing heat and a second solid phase state is a solid state capable of radiating heat. It is a figure which shows the state of each state typically. FIG. 3 shows the phase transition point and the amount of heat stored in the latent heat storage material composition according to the example from the first solid phase state to the second solid phase state, and the first from the second solid phase state. It is a graph which shows the phase transition point to a solid phase state and the amount of heat dissipation, and is the graph which shows the experimental result when the latent heat storage material is trimethylol ethane.

In the graph shown in FIG. 3, the scale on the left side of the vertical axis indicates the temperature of the sample. The scale on the right side of the vertical axis shows the amount of heat stored or dissipated in the sample in a unit time, the "negative" region of this scale indicates the amount of heat absorbed by the sample, and the "positive" region is from the sample. Indicates the amount of heat dissipated. Further, in the diagram of the amount of heat that changes with the passage of time, in the "negative" region, the absolute value of the amount of heat temporarily increases, and the temperature of the sample corresponding to the time t when the maximum value (peak top) is reached. When T (defined as the phase transition point from the first solid phase state to the second solid phase state), the amount of heat absorbed per unit time becomes maximum. As shown in FIG. 2, in the latent heat storage material 10, the latent heat of the sample due to the phase transition due to the phase change from the first solid phase state 10A to the second solid phase state 10B is shown in the heat quantity diagram. It is indicated by the size of the peak area S (hatched portion in the figure of FIG. 3) obtained by integrating the heat amount between the start time and the end time of the peak of the heat absorption amount.

On the contrary, in the diagram of the amount of heat that changes with the passage of time, in the "positive" region, the absolute value of the amount of heat temporarily increases, and the sample corresponding to the time t when the maximum value (peak top) is reached. When the temperature T (defined as the phase transition point from the second solid phase state to the first solid phase state) is reached, the amount of heat released per unit time becomes maximum. As shown in FIG. 2, in the latent heat storage material 10, the latent heat of the sample due to the phase transition is released in the diagram of the amount of heat due to the phase change from the second solid phase state 10B to the first solid phase state 10A. It is indicated by the size of the peak area S (hatched portion in the figure of FIG. 3) obtained by integrating the calorific value between the start time and the end time of the calorific value peak. The unit of the calorific value of the sample is [mW], and the unit of the mass of the sample is [mg]. However, in the graph shown in FIG. 3, the unit of the heat storage amount is [kJ] after the unit conversion is performed in advance. / Kg].

Next, the results of the verification experiment will be described. In the latent heat storage material composition 1 according to the example, as shown in FIG. 3, the temperature Ta corresponding to the time t1 of the heat absorption peak was 85 ° C., and the heat storage Sa was 41 kJ / kg. Further, the temperature Tb corresponding to the time t2 of the heat radiation amount peak was 66 ° C., and the heat radiation amount Sb was 38 kJ / kg. The behavior of heat dissipation was confirmed. In the latent heat storage material composition 1, the state of the temperature Ta and the state of the temperature Tb are both solid phases.

<Discussion>
The latent heat storage material composition 1 shows a heat absorption peak at a temperature of Ta85 ° C. and stores latent heat of 41 kJ / kg in the temperature raising process, while it shows a heat dissipation peak at a temperature of Tb66 ° C. in the temperature lowering process and has a heat quantity of 38 kJ. It gave off latent heat of / kg. The reason is that the clay material 20 itself does not have the heat storage / heat dissipation performance of storing heat and radiating the stored heat, but the latent heat storage material 10 has physical properties accompanied by a phase transition between solid phases. .. Therefore, when the latent heat storage material composition 1 is at a temperature Ta85 ° C. in the temperature raising process, the latent heat storage material 10 can dissipate heat from the first solid phase state 10A capable of storing heat, as shown in FIG. It is presumed that the phase transition is performed in the second solid phase state 10B.

On the contrary, when the latent heat storage material composition 1 is at a temperature Tb66 ° C. in the temperature lowering process, the latent heat storage material 10 stores heat from the second solid phase state 10B capable of radiating heat as shown in FIG. It is presumed that this is because the phase transition is performed in the first possible solid phase state 10A. Therefore, the latent heat storage material composition 1 can be configured to have physical properties that maintain the heat storage and heat dissipation performance of the latent heat storage material 10 even if the latent heat storage material 10 is kneaded with the clay material 20. It is thought that it is because of it.

Next, the action / effect of the latent heat storage material composition 1 of the present embodiment will be described. The latent heat storage material composition 1 of the present embodiment is a clay material 20 that can be kneaded with the latent heat storage material 10 that stores heat or dissipates heat by utilizing the inflow and outflow of latent heat, and the latent heat storage material 10. The latent heat storage material 10 is an anhydrous organic compound having physical properties accompanied by a phase transition between solid phases.

Further, in the latent heat storage material composition 1 of the present embodiment, the latent heat storage material 10 has a chemical formula [(CH ₃ ) _4-n C (CH ₂ OH) _n )] (n is a natural number of 2 ≦ n ≦ 4). Among the organic compounds, it is an anhydride trimethylolethane [CH ₃ C (CH ₂ OH) ₃ ] having three methylol groups.

Due to this feature, the latent heat storage material composition 1 can hold the latent heat storage material 10 having heat storage and heat dissipation performance without leaking due to the clay material 20, and can be used for accommodating tools such as microcapsules, bags, and containers. It does not require any containment treatment and can be used as it is by arranging it on a latent heat supply object that requires latent heat. Moreover, since the latent heat storage material composition 1 has physical properties that can be freely molded according to the shape of the latent heat supply object, it is possible to cover the latent heat storage material composition 1 in close contact with the latent heat supply object. Therefore, the loss of latent heat entering and exiting between the latent heat storage material composition 1 and the latent heat supply target can be suppressed, and the heat retention and cold retention of the latent heat supply target can be enhanced.

Therefore, according to the latent heat storage material composition 1 according to the present embodiment, the latent heat storage material 10 does not leak during use even when it is in the heat storage state, and the latent heat can be stored and dissipated. It works.

By the way, there is a need in the market to use a latent heat storage material in a form in which a latent heat storage material is filled in microcapsules as a latent heat supply target. As an example, indoor temperature control is performed together with building materials such as building materials that cover walls, floors, ceilings, etc. in buildings, and heat insulating materials that are installed between outdoor walls and indoor walls. The use of latent heat storage material is expected for the purpose. For such needs, the latent heat storage material is filled in microcapsules.

However, as described above in the background technology, the microcapsules do not have sufficient strength, and even when used together with building materials, the load, stress, impact, heat, etc. acting on the microcapsules, etc. It has the drawback of being easily damaged for some reason. In addition, the latent heat storage material to be filled in the microcapsules is a heat storage material that accompanies a phase change between the liquid phase and the solid phase, and the latent heat storage material 110 as shown in FIG. 4 is used.

FIG. 4 is a diagram schematically showing a state of being in a liquid phase and a state of being in a solid state due to a phase change of the latent heat storage material filled in the microcapsules. It is a figure which shows the state which the melt of the latent heat storage material leaks to the outside from a microcapsule. That is, as shown in FIG. 4, the latent heat storage material 110 and the latent heat storage material composition 101 in which an additive is added to the latent heat storage material 110 are filled in the microcapsules. The latent heat storage material 110 is a heat storage material that accompanies a phase change between the liquid phase and the solid phase. At the freezing point, the latent heat storage material 110 undergoes a phase change from the liquid phase state 110A to the solid phase state 110B to dissipate the latent heat.

On the other hand, when the latent heat storage material 110 reaches the melting point, the latent heat is stored by changing the phase from the solid phase state 110B to the liquid phase state 110A. At this time, since the latent heat storage material 110 is a melt, the filled latent heat storage material 110 may leak from the microcapsules 130 due to damage to the microcapsules 130. The leaked latent heat storage material 110X not only loses the heat storage / heat dissipation performance, but also has a great adverse effect on the installation location of the microcapsules 130 filled with the latent heat storage material 110, which causes a problem.

On the other hand, the latent heat storage material composition 1 does not require an accommodating tool such as a microcapsule, a bag, or a container, and the clay material 20 can hold the latent heat storage material 10 without leaking. Therefore, the latent heat storage material composition 1 is not housed in such an accommodating tool, so that the cost required for the latent heat storage material composition 1 can be reduced and the cost is low. Further, since the latent heat storage material composition 1 does not encapsulate and hold the latent heat storage material 10, it is desired to use the latent heat of the latent heat storage material for the latent heat supply target in the form of filling the latent heat storage material in microcapsules. It will be possible to respond to needs with a wide range of versatility.

In particular, as an example thereof, the latent heat storage material composition 1 can be used together with the above-mentioned building materials for the purpose of controlling the temperature in a room, and is a pipe / tube member that transfers heat with a heat exchanger. Etc., and the secondary battery can be coated for the purpose of suppressing thermal expansion. Further, since the latent heat storage material composition 1 has physical properties that can be freely molded, the latent heat storage material composition 1 can be flexibly molded and mounted according to the shape of a container or the like containing food or drink. Therefore, the food and drink in the container or the like can be kept for a longer period of time at an appropriate temperature that is the temperature at which a person can drink or eat.

Further, in the latent heat storage material composition 1 according to the present embodiment, the clay material 20 is a clay-like silicone clay material containing silicone as a main component.

Due to this feature, the clay material 20 is a substance that is harmless to the human body in terms of safety and hygiene, has no offensive odor, and does not become brittle even when exposed to sunlight, wind, or the like. Further, the clay material 20 is widely distributed in the market, easily available, and inexpensive.

In the above, the present invention has been described in accordance with the embodiments of the embodiments, but the present invention is not limited to the embodiments of the above embodiments, and can be appropriately modified and applied without departing from the gist thereof. ..

(1) For example, in the embodiment, the latent heat storage material composition 1 in which the latent heat storage material 10 alone is kneaded with the clay material 20 is mentioned, but the latent heat storage material composition may be used in addition to the latent heat storage material, if necessary. For example, it may be configured by adding additives such as a binder, a thickener, and a colorant.

(2) Further, in the embodiment, the latent heat storage material composition 1 in which the latent heat storage material 10 made of trimethylolethane and the clay material 20 made of a silicone clay material are kneaded is mentioned. However, the latent heat storage material is not limited to trimethylolethane, and can be variously changed as long as it is an anhydrous organic compound having physical properties accompanied by a phase transition between solid phases. Further, the clay material is not limited to the silicone clay material, and can be kneaded with the latent heat storage material, and if it is a clay having plasticity, for example, earth clay, sand clay, oil clay, paper clay and the like. In addition, various changes can be made.

(3) Further, in the embodiment of the embodiment, 1.6 g of trimethylolethane anhydride (latent heat storage material 10) as the main component and 0.8 g of clay material 20 as a silicone clay material are kneaded. The content ratio of the latent heat storage material 10 in the total weight of the latent heat storage material composition 1 was set to 33 wt%. However, the content ratio of the latent heat storage material to the total weight of the latent heat storage material composition including the latent heat storage material and the clay material is not limited to 33 wt% as an example, and can be changed as appropriate.

1 Latent heat storage material composition 10 Latent heat storage material 20 Clay material

Claims (5)

A latent heat storage material that stores heat or dissipates heat by utilizing the inflow and outflow of latent heat and a clay material that can be kneaded with the latent heat storage material and has plasticity are blended.
The latent heat storage material is an anhydrous organic compound having physical properties with a phase transition between solid phases.
A latent heat storage material composition characterized by. In the latent heat storage material composition according to claim 1,
The latent heat storage material is an organic compound having a plurality of methylol groups.
A latent heat storage material composition characterized by. In the latent heat storage material composition according to claim 2.
The latent heat storage material is _{an organic compound having a chemical formula [(CH 3} ) _4-n C (CH ₂ OH) _n )] (n is a natural number of 2 ≦ n ≦ 4).
A latent heat storage material composition characterized by. In the latent heat storage material composition according to claim 3,
The latent heat storage material is trimethylolethane [CH ₃ C (CH ₂ OH) ₃ ].
A latent heat storage material composition characterized by. In the latent heat storage material composition according to any one of claims 1 to 4.
The clay material is a clay-like silicone clay material containing silicone as a main component.
A latent heat storage material composition characterized by.

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