Composite heat-storage, temperature-regulating and energy-storage product for household articles, and preparation method therefor

Abstract

The present invention relates to a composite heat-storage, temperature-regulating and energy-storage product for household articles, and a preparation method therefor. The product has simple components and only comprises an alkane, a modified nano silicon dioxide aerogel, a ceramic powder and polyurethane TPU, and the preparation process is molding. Furthermore, the alkane is preferably n-octadecane, and the other components are a caprylic-modified nano silicon dioxide aerogel, a titanium dioxide ceramic powder and polyurethane TPU. The components cooperate with each other, such that the product has the optimal heat-storage, temperature-regulating and energy-storage performance, and has wide prospects in the use of household articles.

Description

A composite heat storage temperature regulating energy storage product for household items and its preparation method Technical Field

[0001] The present invention belongs to the technical field of heat storage and temperature regulation energy storage, and specifically relates to a composite heat storage and temperature regulation energy storage product and a preparation method thereof. Background Art

[0002] Phase change materials (PCMs) are substances that change state while maintaining a constant temperature and can provide latent heat. This process of changing physical properties is called a phase change, during which the PCM absorbs or releases large amounts of latent heat. The thermal storage and thermoregulation technology utilizes a novel thermoregulation mechanism that is insensitive to external temperature fluctuations and can provide a comfortable microclimate for the human body. It provides thermal regulation rather than thermal insulation. This novel thermal insulation mechanism relies on the PCM absorbing or releasing heat from the surrounding environment as it transitions between solid and liquid phases. During this phase change, the temperature remains constant. Textiles containing PCMs act as a regulator between the human body and the environment, buffering against changes in ambient temperature, regardless of whether the ambient temperature rises or falls. In addition to the static thermal insulation properties similar to conventional textiles, PCMs also exhibit dynamic thermoregulation properties. This dynamic thermoregulation is caused by the PCM contained within the textile absorbing or releasing heat as the ambient temperature changes. When the ambient temperature rises, it absorbs the heat energy from the external environment and stores it. When the external temperature drops, it releases the stored heat energy, and the human body or animal that comes into contact with it feels warm or cool.

[0003] Negami Industry Co., Ltd. disclosed in CN108603097A a heat storage particle (10) and a heat storage material containing the heat storage particle. The heat storage particle (10) comprises a core (12) and a shell (14). The core (12) contains a heat storage substance, and the shell (14) contains polyurethane polyurea. The heat storage particle (10) has a volume average particle size of 100 to 500 μm. However, the polyurethane polyurea is relatively expensive and has low practical application value.

[0004] Shaanxi University of Science and Technology disclosed in CN107312321A a foamed TPU composite phase-change energy storage material, comprising a phase-change energy storage material powder and TPU, wherein the phase-change energy storage material powder accounts for 50-80% by mass, and the TPU accounts for 20-50% by mass, with the sum of the mass percentages of the above components being 100%. The phase-change main material and the foaming agent are encapsulated using a highly thermally conductive, porous inorganic filler, and a composite phase-change energy storage material powder is obtained by melt mixing. The powder has high thermal conductivity and foamability, and is then mixed with a TPU material having low-temperature toughness using a continuous melt blending process. However, the phase-change main material is selected from PEG, paraffin, or hexadecane, which have high phase-change enthalpy values ​​and low phase-change temperatures, requiring foaming, a complex process.

[0005] Guangzhou University disclosed a phase-change temperature-control material and its preparation method in CN112126208A. The phase-change temperature-control material comprises the following components by weight: 70-100 parts of a main resin; 1-10 parts of a phase-change metal oxide powder; 5-20 parts of an organic phase-change material; 8-25 parts of a thermally conductive powder; 1-5 parts of a dispersant; 0-5 parts of a compatibilizer; and 0.1-1 parts of an antioxidant. The preparation method includes the following steps: uniformly mixing the components, adding them to a twin-screw extruder, and extruding and granulating them. The material primarily focuses on improving mechanical properties.

[0006] The main component of existing textile heat storage finishing agents is far-infrared powder, and the main mechanism focuses on the air permeability of textiles and external physical stimulation, friction and vibration heat generation. This product generally adopts the process of dipping or padding. The product itself is not stable, washable, and the number of reuses is relatively low, which often results in a waste of resources. At the same time, the heat storage performance is not good, which is mainly manifested in that the temperature is difficult to increase, it is not breathable, and the human body feels stuffy when used after overheating, and it is difficult to increase the heat appropriately. At the same time, the product stability is not strong, and the finished product is prone to powdering, which on the one hand affects the use effect, and on the other hand brings environmental pollution. The application scope of existing heat storage and energy storage products in household products is very limited. There is an urgent need to develop a composite heat storage temperature regulating energy storage particle for household products, which has excellent heat storage and energy storage effects. Summary of the Invention

[0007] To address the above-mentioned issues, the present invention proposes a composite thermal storage and temperature-regulating energy storage product for household products. The product comprises a simple composition consisting solely of an alkane, modified nano-silica aerogel, ceramic powder, and polyurethane (TPU). The preparation process involves molding. Furthermore, the alkane is preferably n-octadecane, while the nano-silica aerogel modified with octanoic acid, titanium dioxide ceramic powder, and polyurethane (TPU) are preferred. These components work synergistically to achieve optimal thermal storage and temperature-regulating energy storage performance. Through the self-regulation of the phase change material, the product achieves warmth in winter and cooling in summer. This product has broad prospects for use in household products and other consumer goods.

[0008] The technical solutions adopted in the present invention are as follows:

[0009] A composite heat storage and temperature regulation energy storage product for household items, comprising alkanes, modified nano-silica aerogel, ceramic powder, and polyurethane (TPU). The composite heat storage and temperature regulation energy storage product is composite heat storage and temperature regulation energy storage particles or composite heat storage and temperature regulation energy storage memory foam.

[0010] Furthermore, the weight ratio of alkane, modified nano-silica aerogel, ceramic powder and polyurethane TPU is: 10-20:10-20:10-20:40-60.

[0011] Furthermore, the weight ratio of alkane, modified nano-silica aerogel, ceramic powder, and polyurethane TPU is 15:13:13:50.

[0012] Furthermore, the alkane is n-octadecane, n-hexadecane or n-eicosane.

[0013] Furthermore, the modified nano-silica aerogel is a silica aerogel modified by a modifier, and the modifier is one or more of fatty acid, fatty alcohol, fatty amine, and silane coupling agent.

[0014] Furthermore, the modifier is octanoic acid.

[0015] Furthermore, the ceramic powder is inorganic oxide ceramic powder.

[0016] Furthermore, the ceramic powder is titanium dioxide ceramic powder.

[0017] A method for preparing a composite heat storage and temperature regulating energy storage product for household products, comprising the following steps:

[0018] Step 1, prepare the materials, weigh the alkane, melt it, and keep it warm at 55-70°C for later use; weigh the modified nano-silica aerogel, ceramic powder, and polyurethane TPU for later use;

[0019] Step 2: Add the modified nano-silica aerogel to the melted alkane solution, heat it to 70-80° C., stir it evenly, and then add ceramic powder and polyurethane TPU to obtain a mixture;

[0020] Step 3: the mixture enters a granulator or a mold at a temperature of 70-110° C. and is formed to obtain a composite heat storage and temperature regulating energy storage product.

[0021] Furthermore, the temperature in step 3 is 80°C.

[0022] Furthermore, the mixture enters a mold for foaming and molding at a temperature of 70-110° C. to obtain a composite heat storage, temperature regulating and energy storage memory foam.

[0023] Furthermore, the mixture enters a granulator at a temperature of 70-110° C., and is granulated and formed to obtain composite heat storage and temperature regulating energy storage particles.

[0024] A household item is made using the aforementioned composite heat storage, temperature regulation and energy storage product.

[0025] Furthermore, the household item is a latex pillow or a latex pad.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1) For home use, this approach addresses the environmental hazards posed by commercially available phase-change materials, which are not washable and cannot be recycled. By preparing these materials in particle or memory foam form, the process is simpler and the production cost is lower than with existing microcapsules. Furthermore, the combination of alkanes, modified nano-silica aerogels, ceramic powders, and polyurethane (TPU) overcomes the poor thermal and temperature-regulating energy storage performance of existing technologies.

[0028] During specific use, the required temperature can be adjusted as needed. For example, for a pillow, you can choose thermal insulation particles or memory foam of different weights according to your financial ability. You can also add or reduce temperature control materials according to your needs for temperature control to reduce the cost of use.

[0029] The resulting product is tough and ductile, not fragile, and can be reused for years after its first year of use, reducing environmental impact. It is also easy to clean and highly stable, allowing it to be relocated to other locations with lower requirements and reused.

[0030] 2) In terms of product composition, alkanes, modified nano-silica aerogels, ceramic powders, and polyurethane (TPU) are selected as the components of the thermal storage, temperature regulation, and energy storage particles. The preferred alkane is n-octadecane, octanoic acid-modified nano-silica aerogels, titanium dioxide ceramic powders, and polyurethane (TPU). Octanoic acid-modified nano-silica aerogels have suitable compatibility with n-octadecane, with minimal microscopic steric hindrance, enabling the full integration of the alkane and aerogel. Simultaneously, by combining nano-silica aerogels with ceramic powders and optimizing their gradation and composition, a multi-level inorganic system is constructed, which can accommodate more organic alkane space and fully integrate with the polyurethane (TPU). This results in a product with excellent molding properties, high stability, and ultimately superior thermal storage, temperature regulation, and energy storage performance.

[0031] 3) In terms of preparation method, the preparation process is further optimized. Generally speaking, the process is simple. In terms of the selection of granulation temperature, the temperature is limited to 70-110°C, and the optimal temperature is 80°C. When the temperature is excessive, the mixing and granulation effect is poor. When the temperature is too high, vaporization is likely to occur, and it is difficult to complete full coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0033] FIG1 is a graph showing the temperature change of the composite thermal storage and temperature-regulating energy storage product prepared in Example 1 over time. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention and to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific implementation methods of the present invention are further described below.

[0035] The endpoints of the ranges and any values ​​disclosed herein are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoints of each range, the endpoints of each range and individual point values, and the individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed herein.

[0036] In the following examples and comparative examples, all raw materials were commercially available. Modified nanosilica aerogel was prepared by dissolving commercially available nanosilica aerogel with an average particle size of 20 nanometers in an ethanol solution at a molar concentration of 1 mol / L. The solution was stirred until uniformly mixed. A modifier was added at a molar ratio of 1:10, and the mixture was stirred at room temperature for 2 hours. The mixture was then centrifuged and dried to obtain the modified nanosilica aerogel, which was then set aside. The ceramic powder had an average particle size of 0.2 microns.

[0037] Example 1: A method for preparing composite heat-storage temperature-regulating energy storage particles for household products, comprising the following preparation steps:

[0038] Step 1, preparing materials, weighing n-octadecane, melting it, and keeping it warm at 60° C. for later use; weighing octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU for later use; the weight ratio of n-octadecane, octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU is: 15:13:13:50;

[0039] Step 2: adding the octanoic acid-modified nano-silica aerogel to the melted n-octadecane solution, heating to 75° C., stirring evenly, and then adding titanium dioxide ceramic powder and polyurethane TPU to obtain a mixture;

[0040] Step 3: The mixture enters a granulator at a temperature of 80° C. and is formed to obtain composite heat storage and temperature regulating energy storage particles.

[0041] Example 2: A method for preparing composite heat-storage temperature-regulating energy storage particles for use in household items, comprising the following preparation steps:

[0042] Step 1, preparing materials, weighing n-octadecane, melting it, and keeping it warm at 60° C. for later use; weighing octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU for later use; the weight ratio of n-octadecane, octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU is: 10:13:13:50;

[0043] Step 2: adding the octanoic acid-modified nano-silica aerogel to the melted n-octadecane solution, heating to 75° C., stirring evenly, and then adding titanium dioxide ceramic powder and polyurethane TPU to obtain a mixture;

[0044] Step 3: The mixture enters a granulator at a temperature of 80° C. and is formed to obtain composite heat storage and temperature regulating energy storage particles.

[0045] Example 3: A method for preparing composite heat-storage temperature-regulating energy storage particles for use in household products, comprising the following preparation steps:

[0046] Step 1, preparing materials, weighing n-octadecane, melting it, and keeping it warm at 60° C. for later use; weighing octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU for later use; the weight ratio of n-octadecane, octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU is: 20:13:13:50;

[0047] Step 2: adding the octanoic acid-modified nano-silica aerogel to the melted n-octadecane solution, heating to 75° C., stirring evenly, and then adding titanium dioxide ceramic powder and polyurethane TPU to obtain a mixture;

[0048] Step 3: The mixture enters a granulator at a temperature of 80° C. and is formed to obtain composite heat storage and temperature regulating energy storage particles.

[0049] Example 4: A method for preparing composite heat-storage temperature-regulating energy storage particles for use in household products, comprising the following preparation steps:

[0050] Step 1, preparing materials, weighing n-octadecane, melting it, and keeping it warm at 60° C. for later use; weighing octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU for later use; the weight ratio of n-octadecane, octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU is: 15:10:13:50;

[0051] Step 2: adding the octanoic acid-modified nano-silica aerogel to the melted n-octadecane solution, heating to 75° C., stirring evenly, and then adding titanium dioxide ceramic powder and polyurethane TPU to obtain a mixture;

[0052] Step 3: The mixture enters a granulator at a temperature of 80° C. and is formed to obtain composite heat storage and temperature regulating energy storage particles.

[0053] Example 5: A method for preparing composite heat-storage temperature-regulating energy storage particles for use in household products, comprising the following preparation steps:

[0054] Step 1, preparing materials, weighing n-octadecane, melting it, and keeping it warm at 60° C. for later use; weighing octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU for later use; the weight ratio of n-octadecane, octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU is: 15:20:13:50;

[0055] Step 2: adding the octanoic acid-modified nano-silica aerogel to the melted n-octadecane solution, heating to 75° C., stirring evenly, and then adding titanium dioxide ceramic powder and polyurethane TPU to obtain a mixture;

[0056] Step 3: The mixture enters a granulator at a temperature of 80° C. and is formed to obtain composite heat storage and temperature regulating energy storage particles.

[0057] Example 6: A method for preparing composite heat-storage temperature-regulating energy storage particles for use in household products, comprising the following preparation steps:

[0058] Step 1, preparing materials, weighing n-octadecane, melting it, and keeping it warm at 60° C. for later use; weighing octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU for later use; the weight ratio of n-octadecane, octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU is: 15:13:13:40;

[0059] Step 2: adding the octanoic acid-modified nano-silica aerogel to the melted n-octadecane solution, heating to 75° C., stirring evenly, and then adding titanium dioxide ceramic powder and polyurethane TPU to obtain a mixture;

[0060] Step 3: The mixture enters a granulator at a temperature of 80° C. and is formed to obtain composite heat storage and temperature regulating energy storage particles.

[0061] Example 7: A method for preparing composite heat-storage temperature-regulating energy storage particles for use in household products, comprising the following preparation steps:

[0062] Step 1, preparing materials, weighing n-octadecane, melting it, and keeping it warm at 60° C. for later use; weighing octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU for later use; the weight ratio of n-octadecane, octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU is: 15:13:13:60;

[0063] Step 2: adding the octanoic acid-modified nano-silica aerogel to the melted n-octadecane solution, heating to 75° C., stirring evenly, and then adding titanium dioxide ceramic powder and polyurethane TPU to obtain a mixture;

[0064] Step 3: The mixture enters a granulator at a temperature of 80° C. and is formed to obtain composite heat storage and temperature regulating energy storage particles.

[0065] Example 8: A method for preparing composite heat-storage temperature-regulating energy storage particles for use in household items, comprising the following preparation steps:

[0066] Step 1, preparing materials, weighing n-octadecane, melting it, and keeping it warm at 60° C. for later use; weighing octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU for later use; the weight ratio of n-octadecane, octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU is: 15:13:20:50;

[0067] Step 2: adding the octanoic acid-modified nano-silica aerogel to the melted n-octadecane solution, heating to 75° C., stirring evenly, and then adding titanium dioxide ceramic powder and polyurethane TPU to obtain a mixture;

[0068] Step 3: The mixture enters a granulator at a temperature of 80° C. and is formed to obtain composite heat storage and temperature regulating energy storage particles.

[0069] Example 9: A method for preparing composite heat-storage temperature-regulating energy storage particles for use in household products, comprising the following preparation steps:

[0070] Step 1, preparing materials, weighing n-hexadecane, melting it, and keeping it warm at 60° C. for later use; weighing octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU for later use; the weight ratio of n-hexadecane, octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU is: 15:13:13:50;

[0071] Step 2: adding the octanoic acid-modified nano-silica aerogel to the melted n-hexadecane solution, heating to 75° C., stirring evenly, and then adding titanium dioxide ceramic powder and polyurethane TPU to obtain a mixture;

[0072] Step 3: The mixture enters a granulator at a temperature of 80° C. and is formed to obtain composite heat storage and temperature regulating energy storage particles.

[0073] Example 10: A method for preparing composite heat-storage temperature-regulating energy storage particles for use in household products, comprising the following preparation steps:

[0074] Step 1, preparing materials, weighing n-eicosane, melting it, and keeping it warm at 60° C. for later use; weighing octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU for later use; the weight ratio of n-eicosane, octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU is: 15:13:13:50;

[0075] Step 2: adding the octanoic acid-modified nano-silica aerogel to the melted n-eicosane solution, heating the mixture to 75° C., stirring the mixture evenly, and then adding titanium dioxide ceramic powder and polyurethane TPU to obtain a mixture;

[0076] Step 3: The mixture enters a granulator at a temperature of 80° C. and is formed to obtain composite heat storage and temperature regulating energy storage particles.

[0077] Example 11: A method for preparing composite heat-storage temperature-regulating energy storage particles for use in household products, comprising the following preparation steps:

[0078] Step 1, prepare the materials, weigh n-octadecane, melt it, and keep it warm at 60°C for later use; weigh stearic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU for later use; the weight ratio of n-octadecane, stearic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU is: 15:13:13:50;

[0079] Step 2: adding the stearic acid-modified nano-silica aerogel to the melted n-octadecane solution, heating to 75° C., stirring evenly, and then adding titanium dioxide ceramic powder and polyurethane TPU to obtain a mixture;

[0080] Step 3: The mixture enters a granulator at a temperature of 80° C. and is formed to obtain composite heat storage and temperature regulating energy storage particles.

[0081] Example 12: A method for preparing composite heat-storage temperature-regulating energy storage particles for use in household products, comprising the following preparation steps:

[0082] Step 1, preparing materials, weighing n-octadecane, melting it, and keeping it warm at 60° C. for later use; weighing acetic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU for later use; the weight ratio of n-octadecane, acetic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU is: 15:13:13:50;

[0083] Step 2: adding the acetic acid-modified nano-silica aerogel to the melted n-octadecane solution, heating to 75° C., stirring evenly, and then adding titanium dioxide ceramic powder and polyurethane TPU to obtain a mixture;

[0084] Step 3: The mixture enters a granulator at a temperature of 80° C. and is formed to obtain composite heat storage and temperature regulating energy storage particles.

[0085] Example 13: A method for preparing composite heat-storage temperature-regulating energy storage particles for use in household products, comprising the following preparation steps:

[0086] Step 1, prepare the materials, weigh n-octadecane, melt it, and keep it warm at 60°C for later use; weigh stearyl alcohol-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU for later use; the weight ratio of n-octadecane, stearyl alcohol-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU is: 15:13:13:50;

[0087] Step 2: adding the stearyl alcohol-modified nano-silica aerogel to the melted n-octadecane solution, heating to 75° C., stirring evenly, and then adding titanium dioxide ceramic powder and polyurethane TPU to obtain a mixture;

[0088] Step 3: The mixture enters a granulator at a temperature of 80° C. and is formed to obtain composite heat storage and temperature regulating energy storage particles.

[0089] Example 14: A method for preparing composite heat-storage temperature-regulating energy storage particles for use in household products, comprising the following preparation steps:

[0090] Step 1, preparing materials, weighing n-octadecane, melting it, and keeping it warm at 60° C. for later use; weighing oleylamine-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU for later use; the weight ratio of n-octadecane, oleylamine-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU is: 15:13:13:50;

[0091] Step 2: adding the oleylamine-modified nano-silica aerogel to the melted n-octadecane solution, heating to 75° C., stirring evenly, and then adding titanium dioxide ceramic powder and polyurethane TPU to obtain a mixture;

[0092] Step 3: The mixture enters a granulator at a temperature of 80° C. and is formed to obtain composite heat storage and temperature regulating energy storage particles.

[0093] Example 15: A method for preparing composite heat-storage temperature-regulating energy storage particles for use in household products, comprising the following preparation steps:

[0094] Step 1, prepare the materials, weigh n-octadecane, melt it, and keep it warm at 60°C for later use; weigh nano-silica aerogel modified with silane coupling agent A151, titanium dioxide ceramic powder, and polyurethane TPU for later use; the weight ratio of n-octadecane, nano-silica aerogel modified with silane coupling agent A151, titanium dioxide ceramic powder, and polyurethane TPU is: 15:13:13:50;

[0095] Step 2: adding the nano-silica aerogel modified with the silane coupling agent A151 to the melted n-octadecane solution, heating to 75° C., stirring evenly, and then adding titanium dioxide ceramic powder and polyurethane TPU to obtain a mixture;

[0096] Step 3: The mixture enters a granulator at a temperature of 80° C. and is formed to obtain composite heat storage and temperature regulating energy storage particles.

[0097] Example 16: A method for preparing composite heat-storage temperature-regulating energy storage particles for use in household products, comprising the following preparation steps:

[0098] Step 1, preparing materials, weighing n-octadecane, melting it, and keeping it warm at 60° C. for later use; weighing octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU for later use; the weight ratio of n-octadecane, octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU is: 15:13:13:50;

[0099] Step 2: adding the octanoic acid-modified nano-silica aerogel to the melted n-octadecane solution, heating to 75° C., stirring evenly, and then adding titanium dioxide ceramic powder and polyurethane TPU to obtain a mixture;

[0100] Step 3: The mixture enters a granulator at a temperature of 70° C. and is formed to obtain composite heat storage and temperature regulating energy storage particles.

[0101] Example 17: A method for preparing composite heat-storage temperature-regulating energy storage particles for use in household products, comprising the following preparation steps:

[0102] Step 1, preparing materials, weighing n-octadecane, melting it, and keeping it warm at 60° C. for later use; weighing octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU for later use; the weight ratio of n-octadecane, octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU is: 15:13:13:50;

[0103] Step 2: adding the octanoic acid-modified nano-silica aerogel to the melted n-octadecane solution, heating to 75° C., stirring evenly, and then adding titanium dioxide ceramic powder and polyurethane TPU to obtain a mixture;

[0104] Step 3: The mixture enters a granulator at a temperature of 90° C. and is formed to obtain composite heat storage and temperature regulating energy storage particles.

[0105] Example 18: A method for preparing a composite heat storage, temperature regulating and energy storage memory foam for household products, comprising the following preparation steps:

[0106] Step 1, preparing materials, weighing n-octadecane, melting it, and keeping it warm at 60° C. for later use; weighing octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU for later use; the weight ratio of n-octadecane, octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU is: 15:13:13:50;

[0107] Step 2: adding the octanoic acid-modified nano-silica aerogel to the melted n-octadecane solution, heating to 75° C., stirring evenly, and then adding titanium dioxide ceramic powder and polyurethane TPU to obtain a mixture;

[0108] Step 3: The mixture enters a mold for foaming and molding at a temperature of 110° C. to obtain a composite heat storage, temperature regulating and energy storage memory foam.

[0109] Comparative Example 1: A method for preparing composite heat storage and temperature regulating energy storage particles for household products, comprising the following preparation steps:

[0110] Step 1, preparing materials, weighing octanoic acid modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU for standby use; the weight ratio of n-octadecane, octanoic acid modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU is: 0:13:13:50;

[0111] Step 2, mixing the octanoic acid-modified nano-silica aerogel with titanium dioxide ceramic powder and polyurethane TPU to obtain a mixture;

[0112] Step 3: The mixture enters a granulator at a temperature of 80° C. and is formed to obtain composite heat storage and temperature regulating energy storage particles.

[0113] Comparative Example 2: A method for preparing composite heat storage and temperature regulating energy storage particles for household products, comprising the following preparation steps:

[0114] Step 1, preparing materials, weighing n-octadecane, melting it, and keeping it warm at 60° C. for later use; weighing titanium dioxide ceramic powder and polyurethane TPU for later use; the weight ratio of n-octadecane, octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU is: 15:0:13:50;

[0115] Step 2: adding titanium dioxide ceramic powder and polyurethane TPU to the melted n-octadecane solution, heating to 75° C., and stirring evenly to obtain a mixture;

[0116] Step 3: The mixture enters a granulator at a temperature of 80° C. and is formed to obtain composite heat storage and temperature regulating energy storage particles.

[0117] Comparative Example 3: A method for preparing composite heat storage and temperature regulating energy storage particles for household products, comprising the following preparation steps:

[0118] Step 1, preparing materials, weighing n-octadecane, melting it, and keeping it warm at 60° C. for later use; weighing nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU for later use; the weight ratio of n-octadecane, nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU is: 15:13:13:50;

[0119] Step 2: adding the nano-silica aerogel to the melted n-octadecane solution, heating to 75° C., stirring evenly, and then adding titanium dioxide ceramic powder and polyurethane TPU to obtain a mixture;

[0120] Step 3: The mixture enters a granulator at a temperature of 80° C. and is formed to obtain composite heat storage and temperature regulating energy storage particles.

[0121] Comparative Example 4: A method for preparing composite heat storage and temperature regulating energy storage particles for household products, comprising the following preparation steps:

[0122] Step 1, preparing materials, weighing n-octadecane, melting it, and keeping it warm at 60° C. for later use; weighing octanoic acid-modified nano-silica aerogel and titanium dioxide ceramic powder for later use; the weight ratio of n-octadecane, octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU is: 15:13:13:0;

[0123] Step 2: adding the octanoic acid-modified nano-silica aerogel to the melted n-octadecane solution, heating to 75° C., stirring evenly, and then adding titanium dioxide ceramic powder to obtain a mixture;

[0124] Step 3: The mixture enters a granulator at a temperature of 80° C. and is formed to obtain composite heat storage and temperature regulating energy storage particles.

[0125] Comparative Example 5: A method for preparing composite heat storage and temperature regulating energy storage particles for household products, comprising the following preparation steps:

[0126] Step 1, preparing materials, weighing n-octadecane, melting it, and keeping it warm at 60° C. for later use; weighing octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU for later use; the weight ratio of n-octadecane, octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU is: 5:13:13:50;

[0127] Step 2: adding the octanoic acid-modified nano-silica aerogel to the melted n-octadecane solution, heating to 75° C., stirring evenly, and then adding titanium dioxide ceramic powder and polyurethane TPU to obtain a mixture;

[0128] Step 3: The mixture enters a granulator at a temperature of 80° C. and is formed to obtain composite heat storage and temperature regulating energy storage particles.

[0129] Comparative Example 6: A method for preparing composite heat storage and temperature regulating energy storage particles for household products, comprising the following preparation steps:

[0130] Step 1, preparing materials, weighing n-octadecane, melting it, and keeping it warm at 60° C. for later use; weighing octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU for later use; the weight ratio of n-octadecane, octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU is: 15:13:13:50;

[0131] Step 2: adding the octanoic acid-modified nano-silica aerogel to the melted n-octadecane solution, heating to 75° C., stirring evenly, and then adding titanium dioxide ceramic powder and polyurethane TPU to obtain a mixture;

[0132] Step 3: The mixture enters a granulator at a temperature of 80° C. and is formed to obtain composite heat storage and temperature regulating energy storage particles.

[0133] Comparative Example 7: A method for preparing composite heat storage and temperature regulating energy storage particles for household products, comprising the following preparation steps:

[0134] Step 1, preparing materials, weighing n-octadecane, melting it, and keeping it warm at 60° C. for later use; weighing octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU for later use; the weight ratio of n-octadecane, octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU is: 15:13:5:50;

[0135] Step 2: adding the octanoic acid-modified nano-silica aerogel to the melted n-octadecane solution, heating to 75° C., stirring evenly, and then adding titanium dioxide ceramic powder and polyurethane TPU to obtain a mixture;

[0136] Step 3: The mixture enters a granulator at a temperature of 80° C. and is formed to obtain composite heat storage and temperature regulating energy storage particles.

[0137] Comparative Example 8: A method for preparing composite heat storage and temperature regulating energy storage particles for household products, comprising the following preparation steps:

[0138] Step 1, preparing materials, weighing n-octadecane, melting it, and keeping it warm at 60° C. for later use; weighing octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU for later use; the weight ratio of n-octadecane, octanoic acid-modified nano-silica aerogel, titanium dioxide ceramic powder, and polyurethane TPU is: 15:13:13:15;

[0139] Step 2: adding the octanoic acid-modified nano-silica aerogel to the melted n-octadecane solution, heating to 75° C., stirring evenly, and then adding titanium dioxide ceramic powder and polyurethane TPU to obtain a mixture;

[0140] Step 3: The mixture enters a granulator at a temperature of 80° C. and is formed to obtain composite heat storage and temperature regulating energy storage particles.

[0141] Comparative Example 9: Nano-silica aerogel modified with octanoic acid alone was fed into a granulator at a temperature of 80° C. and formed to obtain composite heat storage and temperature regulating energy storage particles.

[0142] Comparative Example 10: Only titanium dioxide ceramic powder was fed into a granulator at a temperature of 80° C. and formed to obtain composite heat storage and temperature regulating energy storage particles.

[0143] Comparative Example 11: Only polyurethane TPU is fed into a granulator at a temperature of 80°C and formed to obtain composite heat storage, temperature regulating and energy storage particles.

[0144] The heat storage performance test of the composite heat storage and temperature regulation energy storage particles is as follows: Weigh 200 grams of the composite heat storage and temperature regulation energy storage particles and keep them warm in a 45°C constant temperature box for 24 hours. Then set the temperature of the constant temperature box to 6°C, press the stopwatch, record the starting temperature, and detect the temperature of the composite heat storage and temperature regulation energy storage particles at a certain time. Figure 1 shows the change in temperature of the composite heat storage and temperature regulation energy storage particles over time. For comparison, latex and cotton of the same mass were selected for comparative testing. It can be seen that the composite heat storage and temperature regulation energy storage particles have the best heat storage effect. In an environment of 6°C, they can still maintain 14.1°C after 3 hours. The temperature can be controlled to 24.1°C for 90 minutes, which is a temperature that the human body feels more comfortable.

[0145] In order to uniformly compare the thermal storage, temperature regulation and energy storage performance of each embodiment and comparative example, the temperature of the composite thermal storage, temperature regulation and energy storage particles in the embodiment and comparative example at 90 minutes was uniformly measured according to the above test method. The specific results are shown in the table below.

[0146] Table 1 Temperature of the composite heat storage and temperature regulating energy storage particles in different embodiments and comparative examples after 90 minutes at 6°C

[0147]

[0148] At the same time, the thermal storage, temperature regulation and energy storage of the composite thermal storage and temperature regulation energy storage particles prepared by the present invention are related to the number (mass) of particles. Table 2 below shows the thermal storage effect of the temperature rise test of thermal storage and temperature regulation energy storage particles of different masses in Example 1. The initial temperature is 18°C ​​and the constant temperature box is set at 45°C.

[0149] Table 2 Temperature rise test results of heat storage and temperature regulation energy storage particles in Example 1

[0150]

[0151] It can be seen from Table 2 that the more particles there are and the larger the mass, the slower the total temperature rise, but the more heat is stored. In specific applications, in order to cope with adverse external environments, the amount of particles can be adjusted to create biological comfort.

[0152] Table 3 below shows the heat storage effect of the cooling test of the heat storage and temperature regulating energy storage particles of different masses in Example 1. The initial temperature is set to 40°C and the constant temperature box is set to 6°C.

[0153] Table 3 Cooling test results of heat storage and temperature regulation energy storage particles in Example 1

[0154]

[0155] It can be seen from Table 3 that the more particles there are and the larger the mass is, the slower the total temperature drop is and the stronger the heat preservation ability is. From the perspective of specific temperature, the composite heat storage and temperature regulating energy storage particles in the present invention do not produce supercooling phenomenon.

[0156] The embodiments of the present invention are described in detail above, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations made to these embodiments without departing from the principles and spirit of the present invention are still within the scope of protection of the present invention.

Claims

1. A composite heat storage and temperature regulating energy storage product for household items, characterized in that: Its components include alkane, modified nano-silica aerogel, ceramic powder, and polyurethane TPU. The composite heat storage, temperature regulation, and energy storage product is composite heat storage, temperature regulation, and energy storage particles or composite heat storage, temperature regulation, and energy storage memory foam.

2. The composite heat storage and temperature regulating energy storage product for household items according to claim 1, characterized in that: The weight ratio of alkane, modified nano-silica aerogel, ceramic powder and polyurethane TPU is: 10-20:10-20:10-20:40-60.

3. The composite heat storage and temperature regulating energy storage product for household items according to claim 2, characterized in that: The weight ratio of alkane, modified nano-silica aerogel, ceramic powder, and polyurethane TPU is: 15:13:13:

50.

4. The composite heat storage and temperature regulating energy storage product for household items according to claim 1 or 2, characterized in that: The alkane is n-octadecane, n-hexadecane or n-eicosane.

5. The composite heat storage and temperature regulating energy storage product for household items according to claim 1, characterized in that: The modified nano-silica aerogel is a silica aerogel modified by a modifier, and the modifier is one or more of fatty acid, fatty alcohol, fatty amine and silane coupling agent.

6. The composite heat storage and temperature regulating energy storage product for household items according to claim 5, characterized in that: The modifier is octanoic acid.

7. The composite heat storage and temperature regulating energy storage product for household items according to claim 1, characterized in that: The ceramic powder is an inorganic oxide ceramic powder.

8. The composite heat storage and temperature regulating energy storage product for household items according to claim 7, characterized in that: The ceramic powder is titanium dioxide ceramic powder.

9. The method for preparing the composite heat storage and temperature regulating energy storage product for household products according to any one of claims 1 to 8, characterized in that: The method comprises the following preparation steps: Step 1, prepare the materials, weigh the alkane, melt it, and keep it warm at 55-70°C for later use; weigh the modified nano-silica aerogel, ceramic powder, and polyurethane TPU for later use; Step 2: Add the modified nano-silica aerogel to the melted alkane solution, heat it to 70-80° C., stir it evenly, and then add ceramic powder and polyurethane TPU to obtain a mixture; Step 3: the mixture enters a granulator or a mold at a temperature of 70-110° C. and is formed to obtain a composite heat storage and temperature regulating energy storage product.

10. The method for preparing a composite heat storage and temperature regulating energy storage product for household products according to claim 9, characterized in that: The temperature in step 3 is 80°C.

11. A household item, characterized in that: The household item is made of the composite heat storage, temperature regulating and energy storage product according to any one of claims 1 to 8.

12. The household product according to claim 11, characterized in that: The household item is a latex pillow or a latex pad.

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