High-efficiency humidity-controlling energy-saving building material, preparation method and application thereof

Abstract

The application provides a high-efficiency humidity-controlling energy-saving building material, a preparation method and application thereof, and the preparation method comprises the following steps: step one, preparing a porous substrate; step two, immersing the porous substrate in a humidity-controlling solution for a period of time, and taking out the porous substrate to obtain the high-efficiency humidity-controlling energy-saving building material, wherein the humidity-controlling solution comprises a humidity-controlling composition, the humidity-controlling composition comprises at least three kinds of light metal salts and one other kind of substance, the light metal salts are selected from calcium chloride, copper sulfate, potassium citrate, sodium malate, sodium citrate, sodium phenolate, ammonium chloride, potassium chloride, ammonium lactate, potassium carbonate, lithium bromide and sodium chloride, and the other kind of substance is selected from xanthan gum, silicon dioxide, sodium polyacrylate and sodium hexametaphosphate.

Description

Technical Field

[0001] This invention relates to the field of humidity control, specifically to a high-efficiency humidity-regulating and energy-saving building material, its preparation method, and its application. Background Technology

[0002] Currently, my country has over 8,000 museums, but few have air conditioning systems installed to control the temperature and humidity in their storage rooms. Located in eastern Eurasia, my country's climate is characterized by a pronounced monsoon climate, with cold, dry winters, humid and rainy summers, and distinct four seasons, making the climate complex and changeable. Due to numerous factors influencing weather patterns and frequent fluctuations in temperature and humidity, relying solely on the natural environment to preserve cultural relics is not ideal.

[0003] Currently, high-performance building materials (humidity-regulating boards) used in museums or artifact storage facilities are typically from Japan, such as Kumahira and JIC. JIC is a typical microporous, dense calcium silicate board, with a humidity regulation capacity (Wa) of 80 g / m² according to JC / T 2002-2009 (JC / T 2082-2011). Kumahira Curelite, on the other hand, uses a structure with a layer of effective humidity-regulating components attached to the substrate. This layer is typically 3 mm thick, with a humidity regulation capacity (Wa) of 140 g / m² according to JC / T 2002-2009 (JC / T2082-2011). These humidity-regulating boards have lower humidity regulation capacity per unit area, requiring a larger area to be laid, resulting in very high costs. Furthermore, JIC's humidity-regulating boards have lower strength and are more brittle; while Kumahira's boards are similar to blankets and can be bent under stress.

[0004] In addition, fire extinguishing in museums or artifact storage facilities is an important factor to consider. Currently, conventional fire extinguishing patches, if used in museums or artifact storage facilities, may cause secondary pollution due to the inorganic adhesives and flame retardants falling off under gravity and adhering to the surface of artifacts. Summary of the Invention

[0005] This invention is made to solve the problem of low humidity control capacity per unit area of ​​the aforementioned humidity control board, and aims to provide a high-efficiency humidity control and energy-saving building material, its preparation method and application.

[0006] This invention provides a method for preparing high-efficiency humidity-regulating and energy-saving building materials, characterized by the following steps: Step 1, preparing a porous substrate; Step 2, immersing the porous substrate in a humidity-regulating solution for a period of time, removing the porous substrate to obtain the high-efficiency humidity-regulating and energy-saving building materials, wherein the humidity-regulating solution includes a humidity-regulating composition, the humidity-regulating composition includes at least three light metal salts and one other type of substance, the light metal salts being selected from calcium chloride, copper sulfate, potassium citrate, sodium malate, sodium citrate, sodium phenolate, ammonium chloride, potassium chloride, ammonium lactate, potassium carbonate, lithium bromide, and sodium chloride, and the other type of substance being selected from xanthan gum, silicon dioxide, sodium polyacrylate, and sodium hexametaphosphate.

[0007] The method for preparing high-efficiency humidity-regulating and energy-saving building materials provided by this invention may also have the following feature: wherein the porous substrate is a porous substrate containing fire-extinguishing microcapsules.

[0008] The materials used to prepare the porous substrate containing fire extinguishing microcapsules include the following raw material components in parts by weight: 20-23 parts cement; 35-42 parts tubular diatomaceous earth; 24-26 parts quartz sand; 9-11 parts sepiolite fiber; 0.2-0.6 parts aluminum powder; 1.5-2.5 parts mica; 150 parts water; and 8-12 parts fire extinguishing microcapsules.

[0009] The method for preparing high-efficiency humidity-regulating and energy-saving building materials provided by the present invention may also have the following features: the material for preparing a porous substrate containing fire extinguishing microcapsules includes the following steps: diatomaceous earth, quartz sand, aluminum powder, sepiolite fiber, fire extinguishing microcapsules and mica are mixed evenly to obtain a first mixture; cement and water are mixed evenly to obtain a mixed solution; the first mixture is gradually added to the mixed solution and stirred until it becomes a slurry, then poured into a mold, compacted and its surface is leveled, left for a period of time to solidify, and then removed and dried to obtain a porous substrate containing fire extinguishing microcapsules.

[0010] The preparation method of the high-efficiency humidity-regulating and energy-saving building material provided by the present invention may also have the following characteristics: wherein the fire extinguishing microcapsule is a perfluorohexanone microcapsule, the perfluorohexanone microcapsule includes a shell and an emulsion encapsulated in the shell, the shell includes the following raw material components in parts by weight: 40-50 parts of polymer, 30-40 parts of carrier liquid, 10-20 parts of temperature-sensitive powder, and 3-8 parts of stabilizer, wherein the polymer is any one or more of polyacrylate, polyvinyl alcohol, and polylactic acid, the carrier liquid is any one or more of water, ethanol, ethyl acetate, polysiloxane, and polyvinyl alcohol, the temperature-sensitive powder is poly(N-isopropylacrylamide) or polycaprolactam, the stabilizer is sodium dodecyl sulfate or potassium dodecyl sulfate, and the emulsion includes the following raw material components in parts by weight: 90-110 parts of water, 12-18 parts of sodium dodecyl sulfate, and 330-400 parts of perfluorohexanone.

[0011] The preparation method of the high-efficiency humidity-regulating and energy-saving building material provided by the present invention may also have the following characteristics: the outer shell includes the following raw material components in parts by weight: 45 parts of polyacrylate, 35 parts of polysiloxane, 15 parts of polycaprolactam, and 3-8 parts of potassium dodecyl sulfate; the emulsion includes the following raw material components in parts by weight: 100 parts of water, 15 parts of sodium dodecyl sulfate, and 350 parts of perfluorohexanone.

[0012] The preparation method of the high-efficiency humidity-regulating and energy-saving building materials provided by the present invention may also have the following characteristics: the preparation process of perfluorohexanone microcapsules includes: dissolving perfluorohexanone in water and sodium dodecyl sulfate to obtain an emulsion; homogenizing the emulsion using a high-pressure homogenizer, and then performing ultrasonic treatment using an ultrasonic processor to obtain perfluorohexanone microparticles; and encapsulating the perfluorohexanone microparticles with a shell using a microcapsule encapsulation machine to obtain perfluorohexanone microcapsules.

[0013] The method for preparing high-efficiency humidity-regulating and energy-saving building materials provided by the present invention may also have the following characteristics: wherein the humidity-regulating solution comprises the following raw material components in parts by weight: 330-360 parts of humidity-regulating composition; and 650-750 parts of deionized water, wherein the humidity-regulating composition comprises sodium citrate, potassium carbonate, and lithium bromide in a mass ratio of 2:2:1.

[0014] The preparation method of the high-efficiency humidity-regulating and energy-saving building material provided by the present invention may also have the following features: wherein the humidity-regulating solution further includes the following raw material components in parts by weight: 2 parts of antibacterial agent, the antibacterial agent including nano silver and Kathon; the preparation method of the high-efficiency humidity-regulating and energy-saving building material may also have the following features: step three, after the porous substrate taken out in step two is dried, the surface is uniformly coated with an anti-mildew agent, baked for a period of time and then taken out and exposed to air for cooling, to obtain a high-efficiency humidity-regulating and energy-saving building material that can sense temperature and extinguish fire, and the surface of the high-efficiency humidity-regulating and energy-saving building material is packaged with a moisture-proof material for later use.

[0015] The present invention also provides a method for preparing a high-efficiency humidity-regulating and energy-saving building material, which is characterized by being prepared by the above-mentioned method.

[0016] This invention also provides an application of a high-efficiency humidity-regulating and energy-saving building material, characterized in that: the application is in cultural relic warehouses or cultural relic museums, so as to maintain the humidity between RH50% and RH55%.

[0017] The role and effect of invention

[0018] According to the present invention, the high-efficiency humidity-regulating and energy-saving building material, its preparation method and application, the preparation method includes: step one, preparing a porous substrate; step two, immersing the porous substrate in a humidity-regulating solution for a period of time, removing the porous substrate, and obtaining the high-efficiency humidity-regulating and energy-saving building material. The humidity-regulating solution includes a humidity-regulating composition, which includes at least three light metal salts and one other type of substance. The light metal salts are selected from calcium chloride, copper sulfate, potassium citrate, sodium malate, sodium citrate, sodium phenolate, ammonium chloride, potassium chloride, and ammonium lactate. The other type of substance is selected from xanthan gum and potassium hydroxide. The humidity-regulating capacity of the prepared high-efficiency humidity-regulating and energy-saving building material can reach 789 g / m² according to JC / T 2002-2009 (JC / T 2082-2011).

[0019] Furthermore, the high-efficiency humidity-regulating and energy-saving building material of this invention has greatly improved strength. It is neither as fragile as the humidity-regulating board of Japan JIC, nor as flexible under stress as the humidity-regulating board of Japan Kumahira. In other words, the high-efficiency humidity-regulating and energy-saving building material of this invention can be regarded as a multi-functional interior decorative board, which greatly simplifies the decoration process.

[0020] In addition, when the porous substrate used is a porous substrate containing fire extinguishing microcapsules, once a fire occurs, the fire extinguishing microcapsules in this high-efficiency humidity-regulating and energy-saving building material will automatically decompose upon heating, thereby releasing the fire extinguishing agent to extinguish the fire. After the fire is extinguished, the high-efficiency humidity-regulating and energy-saving building material can still perform its humidity regulation work normally because the internal pore structure of its substrate will be more unobstructed, and the humidity regulation effect will be better. Attached Figure Description

[0021] Figure 1 These are actual photographs of the high-efficiency humidity-regulating and energy-saving building materials used in the test examples of this invention;

[0022] Figure 2 These are the results of the humidity regulation performance test in the test examples of this invention;

[0023] Figure 3 This describes the humidity fluctuation in a non-bronze ware warehouse sample room in an application example of the present invention.

[0024] Figure 4 This is an application example of the invention showing the change in humidity inside the warehouse after the air conditioner is turned off in winter. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this invention easy to understand, the following embodiments, in conjunction with the accompanying drawings, specifically illustrate the high-efficiency humidity-regulating and energy-saving building materials of this invention, their preparation methods and applications.

[0026] <Example>

[0027] This embodiment provides a high-efficiency humidity-regulating and energy-saving building material and its preparation method.

[0028] The preparation method of high-efficiency humidity-regulating and energy-saving building materials includes the following steps:

[0029] Step 1: Prepare a porous substrate containing fire extinguishing microcapsules.

[0030] The materials used to prepare the porous substrate containing fire extinguishing microcapsules include the following raw material components in parts by weight: 22 parts cement, 40 parts tubular diatomaceous earth, 24.5 parts quartz sand, 10 parts sepiolite fiber, 0.5 parts aluminum powder, 2 parts mica, 150 parts water, and 8-12 parts fire extinguishing microcapsules.

[0031] The fire extinguishing microcapsules are perfluorohexanone microcapsules with a diameter of less than 30 μm, prepared using existing methods. This size of fire extinguishing microcapsules is chosen because the pore diameter of the tubular diatomaceous earth used as the main material is generally less than 300 μm, and the diameter of a single diatomaceous earth is 50 μm. Furthermore, the manufacturing cost of the microcapsules and the content of perfluorohexanone fire extinguishing agent in the microcapsules must also be taken into account.

[0032] Fire extinguishing microcapsules consist of a capsule shell and an emulsion encapsulated within the capsule shell.

[0033] The capsule shell comprises the following raw material components in parts by weight: 40-50 parts of polymer, 30-40 parts of first carrier liquid, 10-20 parts of temperature-sensitive powder, and 3-8 parts of first stabilizer.

[0034] The polymer is any one or more of polyacrylate, polyvinyl alcohol, and polylactic acid. These polymers have good encapsulation properties and heat sensitivity.

[0035] A carrier liquid serves as the basis for forming the shell. This liquid should possess good fluidity and stability; water, ethanol, ethyl acetate, polysiloxanes, and polyvinyl alcohol are commonly used choices.

[0036] The purpose of adding temperature-sensitive powder is to increase the thermal sensitivity of the casing. The temperature-sensitive powder can be poly(N-isopropylacrylamide) or polycaprolactam, etc. These powders undergo a phase transition at 120°C, thereby causing the casing to crack.

[0037] The purpose of adding a stabilizer is to maintain the stability and durability of the shell. The stabilizer is sodium dodecyl sulfate or potassium dodecyl sulfate.

[0038] The emulsion comprises the following raw material components in parts by weight:

[0039] 90-110 parts water, 12-18 parts sodium dodecyl sulfate, and 330-400 parts perfluorohexanone.

[0040] Preferably, the capsule shell comprises the following raw material components in parts by weight: 45 parts polyacrylate, 35 parts polysiloxane, 15 parts polycaprolactam, and 3-8 parts potassium dodecyl sulfate. The emulsion comprises the following raw material components in parts by weight: 100 parts water, 15 parts sodium dodecyl sulfate, and 350 parts perfluorohexanone.

[0041] The preparation process of perfluorohexanone microcapsules includes:

[0042] Step S1-1: Dissolve perfluorohexanone in water and sodium dodecyl sulfate according to the above ratio to obtain an emulsion;

[0043] Step S1-2: The emulsion is homogenized using a high-pressure homogenizer to make its particles finer, and then ultrasonic treatment is performed using an ultrasonic processor to disperse the perfluorohexanone emulsion into small particles to obtain perfluorohexanone microparticles.

[0044] Steps S1-3 involve encapsulating the above-mentioned capsule shell with perfluorohexanone microparticles using a microencapsulation machine to obtain perfluorohexanone microcapsules. The mass of the capsule shell in the perfluorohexanone microcapsule shall not exceed 35% and not be less than 18% of the total mass of the perfluorohexanone microcapsule.

[0045] Step S1-3 includes the following sub-steps:

[0046] Step S1-3-1: Place the carrier liquid into the reaction chamber of the microencapsulation machine. Step S1-3-2: Add the polymer to the reaction chamber according to the above ratio and stir thoroughly until uniformly dispersed. Step S1-3-3: Add the thermosensitive powder to the reaction chamber according to the above ratio and stir thoroughly again to ensure the thermosensitive powder is uniformly dispersed in the liquid. Step S1-3-4: Add the stabilizer to the reaction chamber according to the above ratio and continue stirring to ensure the stabilizer is uniformly dispersed in the liquid. Step S1-3-5: Adjust the temperature of the microencapsulation machine to form a robust shell. Step S1-3-6: Add perfluorohexanone particles with a diameter of less than 200 nanometers to the reaction chamber, ensuring they are uniformly dispersed in the liquid. Step S1-3-7: Use the encapsulation mode of the microencapsulation machine to encapsulate the small particles in the liquid, forming a thermosensitive shell. S1-3-8, after the encapsulation is completed, the capsules are collected and dried to remove any residual moisture or solvent, resulting in perfluorohexanone microcapsules.

[0047] In addition, the particle size of the prepared perfluorohexanone microcapsules was tested using a particle size analyzer to ensure that it did not exceed 300 nm. Thermogravimetric analysis was used to measure the thermal stability and thermal degradation temperature of the prepared perfluorohexanone microcapsules to ensure that they met fire extinguishing requirements.

[0048] Considering that perfluorohexanone is volatile, the liquid perfluorohexanone microcapsules are encapsulated at room temperature. The storage location needs to be air-conditioned and controlled at 20 degrees Celsius, and the operating environment needs to be maintained at 26 degrees Celsius (perfluorohexanone is water-soluble at 25 degrees Celsius).

[0049] In addition, a trace amount of sodium bicarbonate can be added to the emulsion as needed. Sodium bicarbonate has a low thermosensitive decomposition temperature, which helps to lower the induced rupture temperature (from 120°C to about 85°C), thus assisting perfluorohexanone in breaking through the capsule shell and the internal cavities of the high-efficiency humidity-regulating and energy-saving building materials. For example, when the thickness of the high-efficiency humidity-regulating and energy-saving building materials is less than or equal to 6mm, sodium bicarbonate may or may not be added; when the thickness of the high-efficiency humidity-regulating and energy-saving building materials is greater than 6mm, sodium bicarbonate must be added. This can counteract the factor of excessive thickness causing internal temperature hysteresis and clear the internal cavity structure.

[0050] The specific preparation process of the porous substrate containing fire extinguishing microcapsules is as follows:

[0051] Step S2-1: Mix diatomaceous earth, quartz sand, aluminum powder, sepiolite fiber, fire extinguishing microcapsules and mica evenly according to the above proportions to obtain the first mixture;

[0052] Step S2-2: Mix cement and water evenly according to the above ratio to obtain a mixed solution;

[0053] Step S2-3: The first mixture is gradually added to the mixed solution and stirred until it becomes a slurry. Then it is poured into a mold, compacted and its surface is leveled. It is left to stand for about 24 hours to solidify. After it is taken out and completely dried, a porous substrate containing fire extinguishing microcapsules is obtained with a thickness of no more than 9 mm.

[0054] Step 2: Immerse the porous substrate containing fire extinguishing microcapsules obtained in Step 1 in the humidification solution, ensuring that the liquid level completely covers the surface of the substrate. Wait for 15-20 minutes. During this time, there will be a continuous humming sound of air being displaced. After immersion, remove the porous substrate.

[0055] The humidification solution comprises the following raw material components in parts by weight: 350 parts of humidification composition, 700 parts of deionized water, and 2 parts of antibacterial agent.

[0056] The humidity-regulating composition includes at least three light metal salts and one other type of substance. The light metal salts are selected from calcium chloride, copper sulfate, potassium citrate, sodium malate, sodium citrate, sodium phenolate, ammonium chloride, potassium chloride, ammonium lactate, potassium carbonate, lithium bromide, and sodium chloride. The other type of substance is selected from xanthan gum, silicon dioxide, sodium polyacrylate, and sodium hexametaphosphate.

[0057] By adjusting the type, quantity, and ratio of light metal salts, as well as the types of other substances, the humidity control critical point of the final prepared elastic humidity control composition can be changed.

[0058] The antibacterial agents include nano-silver and Kathon, with a mass ratio of nano-silver to Kathon of 1:3:2.

[0059] In this embodiment, three light metal salts were used: sodium citrate, potassium carbonate, and lithium bromide, in a mass ratio of 2:2:1. 。 Accordingly, the critical humidity control point of the final prepared elastic humidity control composition in this embodiment is RH55%.

[0060] Step 3: After removing the porous substrate in Step 2, allow it to air dry naturally. Then, evenly coat a small amount of anti-mold agent (preferably a plant-derived anti-mold agent) onto the surface of the porous substrate. The amount of anti-mold agent used on one side of a 1500mm × 900mm porous substrate should not exceed 30g. Next, transfer the porous substrate to an oven for drying. The temperature inside the oven should be below 60℃. ， The material must be baked continuously overnight to completely remove unnecessary internal moisture. After baking, the porous substrate should be removed from the oven and exposed to air for 30 minutes to cool down, resulting in a high-efficiency moisture-regulating and energy-saving building material. If the area where this building material will be used is a dry region, the cooling process should be extended by 30 minutes to facilitate moisture absorption. The surface of the prepared high-efficiency moisture-regulating and energy-saving building material should also be wrapped with moisture-proof materials such as plastic sheeting or aluminum foil for later use.

[0061] The high-efficiency humidity-regulating and energy-saving building material prepared in this embodiment has the following characteristics:

[0062] The fire extinguishing microcapsules contained in the high-efficiency humidity-regulating and energy-saving building materials can all rupture within 3 minutes at 80°C in the event of a fire, releasing the fire extinguishing agent (perfluorohexanone). After that, the high-efficiency humidity-regulating and energy-saving building materials can still work normally because their internal pore structure becomes more unobstructed, resulting in better humidity regulation.

[0063] The high-efficiency humidity-regulating and energy-saving building materials (1) do not contain alcohols, so they can work stably in daily environments for a long time, and their humidity-regulating performance will not be significantly degraded due to the volatilization of alcohols; (2) do not contain organic acid salts, so they will not release volatile toxic and harmful substances such as potassium acetate; (3) do not contain CMC organic adhesives, and add trace amounts of antibacterial agents, which can effectively inhibit the airborne seeding of mold in South China; (4) the surface is coated with anti-mold agents to reduce the probability of airborne seeding of mold.

[0064] The porous substrate of the high-efficiency humidity-regulating and energy-saving building material (mainly composed of tubular diatomaceous earth, nano-silica, and inorganic mineral fibers) achieves a good balance in rigidity, toughness, permeability, water retention, and flame retardancy. It can also carry a large amount of effective humidity-regulating components, even surpassing the existing concept of experts from the National Building Materials Science Research Institute that "the effective humidity-regulating layer of building materials is only 3mm thick on the surface." The effective humidity-regulating layer thickness of the high-efficiency humidity-regulating and energy-saving building material in this embodiment reaches more than 4.5mm on the surface.

[0065] <Test Example>

[0066] High-efficiency humidity-regulating and energy-saving building materials prepared in the examples (photos of the building materials are shown). Figure 1 As shown, a humidity regulation performance test was conducted. The test was conducted according to the standard JC / T2002-2009, and the test results are as follows. Figure 2 As shown. The maximum moisture absorption per square meter can reach 464g / ㎡, the maximum moisture release can reach 325g / ㎡, and the total humidity regulation can reach 789g / ㎡.

[0067] <Application Example>

[0068] Application Scenario 1:

[0069] After covering a non-bronze ware warehouse sample room with high-efficiency humidity-regulating and energy-saving building materials, the humidity fluctuation was tested. The results are as follows: Figure 3 As shown.

[0070] From such Figure 3 It can be seen that the stable humidity achieved in the non-bronze ware warehouse model room is between RH50% and RH55%.

[0071] Application Scenario 2:

[0072] Control group: A standard temperature and humidity control laboratory. Experimental group: A temperature and humidity control testing laboratory filled with high-efficiency humidity-regulating and energy-saving building materials.

[0073] After the control group turned on the air conditioning unit in the constant temperature and humidity laboratory, the indoor temperature and humidity both reached a "relatively stable" state after a certain period of adjustment (for example, more than 4 hours in spring, more than 3 hours in autumn, more than 2 hours in summer, and more than 5 hours in winter) following the start of temperature and humidity control. This time was shortened to less than half an hour in the experimental group.

[0074] In addition, the aforementioned high-efficiency humidity-regulating and energy-saving building materials can be installed in core areas such as sample storage areas, sample weighing areas, and operation areas in the laboratory to suppress the frequency and amplitude of humidity changes in the space, playing an important role in maintaining uniform experimental conditions.

[0075] In the event of a large-scale power outage and the failure of the backup power system, simply closing the laboratory access control will allow the aforementioned high-efficiency humidity-regulating and energy-saving building materials to quickly release moisture, stabilizing the microenvironment humidity within a certain range for at least eight hours, thereby ensuring the safety of biological samples.

[0076] Application Scenario 3:

[0077] Another warehouse was filled with high-efficiency humidity-regulating and energy-saving building materials. After the air conditioning was turned off for five days in winter, the humidity changes inside the warehouse were as follows: Figure 4 As shown.

[0078] From such Figure 4 It can be seen that when the air conditioner was turned off for 5 days in winter, the humidity in the warehouse only decreased by less than 5%.

[0079] The 6mm thick high-efficiency humidity-regulating and energy-saving panel produced according to the above embodiment weighs approximately 9.5kg per square meter and contains no less than 700g of perfluorohexanone microcapsules, capable of releasing at least 420g of perfluorohexanone fire extinguishing agent. Following industry practice that a 6g net weight fire extinguishing patch (with perfluorohexanone microcapsule content necessarily less than 6g) can control a 20L space, this translates to each square meter of high-efficiency humidity-regulating and energy-saving panel being able to control 1.4m² of space. 3 Initial fire within the space.

[0080] Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A method for preparing a high-efficiency humidity-regulating and energy-saving building material, characterized in that, Includes the following steps: Step 1: Prepare a porous substrate; Step two: Immerse the porous substrate in a humidity-regulating solution for a period of time, then remove the porous substrate to obtain the high-efficiency humidity-regulating and energy-saving building material. The humidity-regulating solution includes a humidity-regulating composition. The humidity-regulating composition comprises at least three light metal salts and one other type of substance. The light metal salt is selected from calcium chloride, potassium citrate, sodium malate, sodium citrate, sodium phenolate, potassium chloride, potassium carbonate, lithium bromide, and sodium chloride. The other substances are selected from xanthan gum, silica, sodium polyacrylate, and sodium hexametaphosphate. The porous substrate is a porous substrate containing fire extinguishing microcapsules. The materials used to prepare the porous substrate containing fire extinguishing microcapsules include the following raw material components in parts by weight: 20-23 parts cement; 35-42 parts tubular diatomaceous earth; 24-26 parts quartz sand; 9-11 parts sepiolite fiber; 0.2-0.6 parts aluminum powder; 1.5-2.5 parts mica; 150 parts water; and 8-12 parts of the fire extinguishing microcapsules. The fire extinguishing microcapsules are perfluorohexanone microcapsules, which include an outer shell and an emulsion encapsulated within the outer shell. The outer shell comprises the following raw material components in parts by weight: Polymer 40-50 parts, carrier liquid 30-40 parts, temperature-sensitive powder 10-20 parts, stabilizer 3-8 parts, The polymer is any one or more of polyacrylate, polyvinyl alcohol, and polylactic acid; the carrier liquid is any one or more of water, ethanol, ethyl acetate, polysiloxane, and polyvinyl alcohol; the temperature-sensitive powder is poly(N-isopropylacrylamide) or polycaprolactam; and the stabilizer is sodium dodecyl sulfate or potassium dodecyl sulfate. The emulsion comprises the following raw material components in parts by weight: 90-110 parts water, 12-18 parts sodium dodecyl sulfate, 330-400 parts perfluorohexanone The emulsion also contains sodium bicarbonate.

2. The method for preparing high-efficiency humidity-regulating and energy-saving building materials according to claim 1, characterized in that: in, The preparation of the porous substrate containing the fire extinguishing microcapsules includes the following steps: The diatomaceous earth, the quartz sand, the aluminum powder, the sepiolite fiber, the fire extinguishing microcapsules, and the mica are mixed evenly to obtain a first mixture; The cement and water are mixed evenly to obtain a mixed solution; The first mixture is gradually added to the mixed solution and stirred until it becomes a slurry. Then it is poured into a mold, compacted and its surface is leveled. After being left to solidify for a period of time, it is taken out and dried to obtain the porous substrate containing fire extinguishing microcapsules.

3. The method for preparing high-efficiency humidity-regulating and energy-saving building materials according to claim 1, characterized in that: in, The outer shell comprises the following raw material components in parts by weight: 45 parts polyacrylate, 35 parts polysiloxane, 15 parts polycaprolactam, 3-8 parts potassium dodecyl sulfate. The emulsion comprises the following raw material components in parts by weight: 100 parts water, 15 parts sodium dodecyl sulfate, and 350 parts perfluorohexanone.

4. The preparation method of the high-efficiency humidity-regulating and energy-saving building material according to claim 1, Its features are: The preparation process of the perfluorohexanone microcapsules includes: The emulsion was obtained by dissolving perfluorohexanone in water and sodium dodecyl sulfate; The emulsion was homogenized using a high-pressure homogenizer and then ultrasonically treated using an ultrasonic processor to obtain perfluorohexanone microparticles. The perfluorohexanone microparticles are encapsulated in a microencapsulation machine to obtain perfluorohexanone microcapsules.

5. The method for preparing high-efficiency humidity-regulating and energy-saving building materials according to claim 1, characterized in that: in, The humidification solution comprises the following raw material components in parts by weight: 330-360 parts of the humidity-regulating composition; and 650-750 parts of deionized water The humidity-regulating composition comprises sodium citrate, potassium carbonate, and lithium bromide in a mass ratio of 2:2:

1.

6. The method for preparing high-efficiency humidity-regulating and energy-saving building materials according to claim 5, characterized in that: in, The humidification solution also includes the following raw material components in parts by weight: Two parts of antibacterial agent, the antibacterial agent comprising nano silver and Kathon, The preparation method of the high-efficiency humidity-regulating and energy-saving building materials also includes: Step 3: After the porous substrate taken out in step 2 is dried, an anti-mildew agent is uniformly coated on the surface. After baking for a period of time, it is taken out and exposed to air for cooling to obtain the high-efficiency humidity-regulating and energy-saving building material. The surface of the high-efficiency humidity-regulating and energy-saving building material is packaged with moisture-proof material for later use.

7. A high-efficiency humidity-regulating and energy-saving building material, characterized in that: It is prepared by the preparation method described in any one of claims 1-6.

8. The application of the high-efficiency humidity-regulating and energy-saving building materials as described in claim 7, characterized in that: in, The application is for use in cultural relic warehouses or museums to maintain humidity between RH50% and RH55%.

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