Temperature control layer and preparation method thereof, vehicle interior material, temperature control steering wheel and vehicle

Abstract

The invention relates to a temperature control layer and a preparation method thereof, a vehicle interior material, a temperature control steering wheel and a vehicle. The temperature control layer comprises a polymer matrix and phase change microcapsules dispersed in the polymer matrix. The phase change microcapsules are dispersed in the polymer matrix, when the environment temperature changes, the core materials of the phase change microcapsules can change between the curing state and the melting state and absorb or release heat, the original structure of the temperature control layer does not need to be changed, and the temperature of the temperature control layer is stabilized near the phase change point for a long time. According to the temperature control layer, on the premise that the structural consistency is kept, the use comfort of the human body is improved.

Description

Technical Field

[0001] The present invention relates to a temperature control layer and a preparation method thereof, a vehicle interior material, a temperature control steering wheel and a vehicle. Background Art

[0002] At present, in order to make the steering wheel capable of intelligent temperature control, the existing technology sets a cavity filled with phase change material inside the steering wheel, and uses the phase change temperature of the phase change material to achieve temperature control. However, the cavity design will change the original structure of the steering wheel, affecting the structural strength of the steering wheel, which may cause safety and shortened service life problems; in addition, if the phase change material is directly filled, the phase change transformed material exists in liquid or gas form, which requires higher device sealing; if gas-liquid phase change material is used, there are defects such as different vaporization temperatures under different pressures, high requirements for temperature control, and high application difficulty. Summary of the invention

[0003] The purpose of the present disclosure is to provide a temperature control layer and a preparation method thereof, a vehicle interior material, a temperature control steering wheel and a vehicle. The temperature control layer does not change the original structure and can stabilize the temperature near the phase change point for a long time, thereby improving the comfort of human use.

[0004] In order to achieve the above-mentioned objective, the present disclosure provides a temperature control layer in a first aspect. The temperature control layer comprises a polymer matrix and phase change microcapsules dispersed in the polymer matrix.

[0005] Optionally, based on the weight of the temperature control layer, the weight content of the phase change microcapsules is less than 20wt%.

[0006] Optionally, based on the weight of the temperature control layer, the weight content of the phase change microcapsules is 10-15wt%.

[0007] Optionally, the particle size of the phase-change microgel is 1-100 μm, and / or the phase-change latent heat of the phase-change microcapsule is above 100 J / g.

[0008] Optionally, the phase change microcapsule comprises a capsule wall and a core material; the core material is a solid-liquid phase change material with a phase change temperature of 26-32°C; and / or the capsule wall comprises a material with a melting point of more than 300°C.

[0009] Optionally, the core material includes one or more of paraffin, Na2HPO4·12H2O, Na2SO4·10H2O, Na2CO3·7H2O, Na2SiO3·5H2O, gallium and gallium alloy.

[0010] Optionally, the capsule wall comprises an organic polymer and / or an inorganic oxide; the organic polymer comprises one or more of polyurethane, polyacrylic acid, polyacrylate, silicone rubber, melamine and polyurea resin; the inorganic oxide comprises one or more of silicon oxide, aluminum oxide and titanium dioxide.

[0011] Optionally, the capsule wall comprises polyurethane.

[0012] Optionally, the polymer matrix comprises a foamed material.

[0013] Optionally, the polymer matrix comprises polyurethane; and / or, the polymer matrix comprises a rubber material, and the rubber material comprises one or more of synthetic rubber and natural rubber.

[0014] The second aspect of the present disclosure provides a method for preparing the temperature control layer described in the first aspect of the present disclosure, the method comprising: mixing a polymer raw material of a polymer matrix with phase change microcapsules, and subjecting the obtained mixture to a polymerization reaction.

[0015] Optionally, the polymerization raw material includes a plurality of reactants, the phase change microcapsules are mixed with one of the reactants, and then contacted with the remaining polymerization raw materials to carry out the polymerization reaction.

[0016] Optionally, the polymerization raw materials include isocyanate and polyol; The method comprises: first mixing the phase change microcapsules with the isocyanate, and contacting the first mixture with the polyol to perform the polymerization reaction; Optionally, the weight average molecular weight of the polyol is 3000-7000, and the polyol includes polyether polyol and / or polyester polyol.

[0017] Optionally, the mass ratio of the phase change microcapsules to the polymer raw materials of the polymer matrix is ​​(0.05-0.25):1.

[0018] Optionally, the temperature control layer is used to manufacture a steering wheel, and the polymerization reaction is carried out in a steering wheel mold.

[0019] A third aspect of the present disclosure provides a vehicle interior material, comprising the temperature control layer described in the first aspect of the present disclosure.

[0020] A fourth aspect of the present disclosure provides a temperature-controlled steering wheel, comprising a main body and the temperature-control layer described in the first aspect of the present disclosure.

[0021] Optionally, the temperature-controlled steering wheel further includes a protective layer, and the protective layer covers the temperature-control layer.

[0022] Optionally, the temperature-controlled steering wheel further includes a heat exchange device, and the heat exchange device is used to exchange heat with the temperature control layer.

[0023] Optionally, the heat exchange device is a heating device and / or a ventilation device.

[0024] A fifth aspect of the present disclosure provides a vehicle, comprising the temperature control layer as described in the first aspect of the present disclosure, or the vehicle interior material as described in the third aspect of the present disclosure, or the temperature control steering wheel as described in the fourth aspect of the present disclosure.

[0025] Through the above technical solution, the temperature control layer disclosed in the present invention includes phase change microcapsules. When the ambient temperature changes, the core material of the phase change microcapsules can change between the solidified and melted states, absorbing or releasing heat, and can adjust the temperature of the temperature control layer to stabilize the temperature near the phase change point. In addition, the phase change microcapsules are directly dispersed in the polymer matrix, and there is no need to change the original structure of the temperature control layer. The core material of the phase change microcapsules is wrapped by the capsule wall, and there is no need to add an additional anti-leakage structure, which is conducive to maintaining the structural strength of the temperature control layer, and there is no need to add additional production line equipment for the molding process. The temperature control layer disclosed in the present invention stabilizes the temperature of the temperature control layer near the phase change point for a long time while maintaining structural consistency, thereby improving the comfort of human use.

[0026] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings: Figure 1 It is a schematic diagram of a temperature-controlled steering wheel according to an embodiment of the present invention.

[0028] Figure 2 This is a photograph of the pore structure of the temperature control layer of Example 1 of the present disclosure.

[0029] Figure 3 This is a photograph of the pore structure of the temperature control layer of Example 3 of the present disclosure.

[0030] Figure 4 This is a photograph of the pore structure of the temperature control layer of Example 4 of the present disclosure.

[0031] Figure 5 This is a photograph of the pore structure of the temperature control layer of Example 6 of the present disclosure.

[0032] Description of Reference Numerals 1: Temperature control layer. DETAILED DESCRIPTION

[0033] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0034] The present disclosure provides a temperature control layer, which includes a polymer matrix and phase change microcapsules dispersed in the polymer matrix.

[0035] The temperature control layer disclosed in the present invention includes phase change microcapsules. When the ambient temperature changes, the core material of the phase change microcapsules can change between the solidified and melted states, absorbing or releasing heat, and can adjust the temperature of the temperature control layer, so that the temperature of the temperature control layer is stabilized near the phase change point for a long time; in addition, the phase change microcapsules are directly dispersed in the polymer matrix of the temperature control layer, and there is no need to change the original structure of the temperature control layer. The core material of the phase change material is wrapped by the capsule wall, and there is no need to add an additional anti-leakage structure, which is conducive to maintaining the structural strength of the temperature control layer, and there is no need to add additional production line equipment for the molding process. The temperature control layer disclosed in the present invention stabilizes the temperature of the temperature control layer near the phase change point for a long time while maintaining structural consistency, thereby improving the comfort of human use.

[0036] According to an embodiment of the present disclosure, based on the weight of the temperature control layer, the weight content of the phase change microcapsules is less than 20wt%, preferably 10-15wt%. The above embodiment is conducive to maintaining the temperature of the temperature control layer near the phase change point for a long time while maintaining the consistency of the temperature control layer structure, while making the temperature control layer have good mechanical properties and safety performance, thereby improving the comfort of human use. In the present disclosure, the weight content of the phase change microcapsules can be calculated based on the amount of material fed in the preparation method.

[0037] In one embodiment, a differential scanning calorimeter can be used to test the phase change latent heat of the temperature control layer. If there is a peak change in the phase change latent heat diagram, it means that the temperature control layer contains phase change material. The temperature control layer is observed under a microscope to determine whether phase change microcapsules are added to the temperature control layer.

[0038] According to one embodiment of the present disclosure, the phase change microcapsule includes a capsule wall and a core material. The core material of the phase change microcapsule disclosed in the present disclosure is coated by the capsule wall and will not seep after melting, and the phase change microcapsules are dispersed inside the polymer matrix. Even in a high-temperature melted state, there will be no shaking to affect the feel of the temperature control layer. There is no need to add an additional structure to prevent liquid leakage and air leakage, which is beneficial to maintaining the structural strength of the temperature control layer, and there is no need to add additional production line equipment for the molding process. The above embodiment does not need to change the original structure of the temperature control layer, so that the temperature of the temperature control layer can be stabilized near the phase change point for a long time, which is beneficial to make the temperature control layer have good mechanical properties and safety performance while maintaining the consistency of the temperature control layer structure, thereby improving the comfort of human use.

[0039] According to one embodiment of the present disclosure, the core material of the phase change microcapsule is a solid-liquid phase change material, the phase change temperature is 26-32°C, and the phase change latent heat is above 100 J / g. In the above embodiment, the core material of the phase change microcapsule can change between solidification and melting, absorb or release heat, and adjust the temperature of the temperature control layer so that the temperature of the temperature control layer can be stabilized near the phase change point for a long time, which is conducive to improving the comfort of human use while maintaining the consistency of the temperature control layer structure.

[0040] According to an embodiment of the present disclosure, the core material of the phase change microcapsule includes one or more of paraffin, Na2HPO4·12H2O, Na2SO4·10H2O, Na2CO3·7H2O, Na2SiO3·5H2O, gallium and gallium alloy. The above embodiment is conducive to maintaining the temperature of the temperature control layer near the phase change point, thereby improving the comfort of human body.

[0041] According to an embodiment of the present disclosure, the core material of the phase change microcapsule includes paraffin. The above embodiment is conducive to maintaining the stable performance of the phase change microcapsule, and is conducive to preparing the phase change microcapsule and reducing the cost.

[0042] According to an embodiment of the present disclosure, the capsule wall of the phase-change microcapsule comprises a material with a melting point of more than 300° C. The above embodiment is conducive to protecting the core material of the phase-change microcapsule and preventing the core material from being unusable after liquefaction and seepage.

[0043] According to an embodiment of the present disclosure, the capsule wall includes an organic polymer and / or an inorganic oxide; the organic polymer may include one or more of polyurethane, polyacrylic acid, polyacrylate, silicone rubber, melamine and polyurea resin; the inorganic oxide may include one or more of silicon oxide, aluminum oxide and titanium dioxide. The above embodiment is conducive to protecting the core material of the phase change microcapsule to prevent the core material from seeping and becoming unusable after liquefaction.

[0044] In a preferred embodiment, the type of the capsule wall is the same as the type of the polymer matrix. For example, the polymer matrix includes polyurethane, and the capsule wall is preferably an organic polymer. In the above embodiment, the phase change microcapsules and the polymer matrix have good compatibility, so that the temperature control layer has good temperature control performance, mechanical properties and safety performance, which is conducive to improving the comfort of human use.

[0045] In a preferred embodiment, the polymer matrix includes polyurethane, and the capsule wall is polyurethane. In the above embodiment, the phase change microcapsules and the polymer matrix have better compatibility, so that the temperature control layer has good temperature control performance, mechanical properties and safety performance, which is conducive to improving the comfort of human body.

[0046] According to an embodiment of the present disclosure, the particle size of the phase change microcapsule is 1-100 μm. The above embodiment avoids clogging of the equipment and is easy to prepare the temperature control layer.

[0047] According to an embodiment of the present disclosure, the polymer matrix includes a foaming material, and the foaming material includes polyurethane. The above embodiment makes the phase change microcapsules and the polymer matrix have good compatibility, and the temperature control layer has good temperature control performance, mechanical performance and safety performance, which is conducive to improving the comfort of human body.

[0048] According to one embodiment of the present disclosure, the polymer matrix includes a rubber material, and the rubber material includes one or more of synthetic rubber and natural rubber.

[0049] The second aspect of the present disclosure provides a method for preparing the temperature control layer described in the first aspect of the present disclosure, the method comprising: mixing a polymer raw material of a polymer matrix with phase change microcapsules, and subjecting the obtained mixture to a polymerization reaction.

[0050] The method disclosed in the present invention mixes the raw materials for preparing the phase-change microcapsules with the polymer matrix, so that the phase-change microcapsules are better dispersed in the polymer network structure of the polymer matrix. When the ambient temperature changes, the core material of the phase-change microcapsules can change between the solidified and melted states, absorb or release heat, and adjust the temperature of the temperature control layer. The core material of the phase-change microcapsules is wrapped by the capsule wall, and there is no need to add an additional anti-leakage structure, and there is no need to change the original structure of the temperature control layer, so that the temperature of the temperature control layer is stable near the phase change point for a long time. The preparation method of the temperature control layer disclosed in the present invention is simple, and the consistency of the temperature control layer structure can be maintained, so that the temperature control layer has good temperature control performance, mechanical properties and safety performance, and improves the comfort of human use.

[0051] According to one embodiment of the present disclosure, the polymer raw material includes multiple reactants, the phase change microcapsules are mixed with one of the reactants, and then contacted with the remaining polymer raw materials to carry out the polymerization reaction. The above embodiment is conducive to better dispersion of the phase change microcapsules in the polymer matrix, so that the temperature of the temperature control layer is better maintained near the phase change temperature of the phase change microcapsules, and the comfort of human body is improved.

[0052] According to one embodiment of the present disclosure, the temperature control layer is used to manufacture a steering wheel, and the polymerization reaction is carried out in a steering wheel mold.

[0053] According to one embodiment of the present disclosure, the polymer matrix includes a foaming material, and the foaming material includes polyurethane; the polymerization raw material includes isocyanate and polyol; the method includes: first mixing the phase change microcapsules with isocyanate, and contacting the first mixture with the polyol to carry out the polymerization reaction.

[0054] According to an embodiment of the present disclosure, the first mixing conditions include: the first mixing speed is 5000-6000 rpm, preferably 5500 rpm, and the first mixing time is 10-30 min, preferably 15-25 min. The above embodiment is conducive to uniform mixing of phase change microcapsules and polymer raw materials, and better dispersion in the polymer network structure of the polymer matrix.

[0055] According to one embodiment of the present disclosure, the method further comprises subjecting the first mixture to a second mixing with the polyol, and subjecting the second mixture to the polymerization reaction.

[0056] According to an embodiment of the present disclosure, the second mixing conditions include: a second mixing rotation speed of 5000-6000 rpm, and a second mixing time of 6-10 s.

[0057] According to one embodiment of the present disclosure, the weight average molecular weight of the polyol is 3000~7000, preferably 6000~7000; the polyol includes polyether polyol and / or polyester polyol; the present disclosure does not specifically limit the specific types of polyether polyol and polyester polyol, which may be conventional substances in the art.

[0058] According to an embodiment of the present disclosure, the mass ratio of the polymer raw material of the phase change microcapsule to the polymer matrix is ​​(0.05-0.25): 1, preferably (0.11-0.18): 1. The above embodiment is conducive to maintaining the consistency of the temperature control layer structure, so that the temperature control layer has good temperature control performance, mechanical properties and safety performance, and improves the comfort of human body use.

[0059] According to one embodiment of the present disclosure, the present disclosure does not specifically limit the conditions of the polymerization reaction, which can be conventional reaction conditions for preparing a polymer matrix. For example, the polymer matrix includes a foaming material, and the foaming material includes polyurethane. The conditions of the polymerization reaction can include: a reaction temperature of 20 to 30°C, and a reaction time of 40 to 60 seconds; further, the polymerization reaction system also includes the addition of one or more of a catalyst, a cross-linking agent, an aldehyde scavenger, a foam leveling agent, and silicone oil. The present disclosure does not specifically limit the types and amounts of the catalyst, cross-linking agent, aldehyde scavenger, and foam leveling agent, which can be conventional types and amounts in the art.

[0060] A third aspect of the present disclosure provides a vehicle interior material, comprising the temperature control layer described in the first aspect of the present disclosure.

[0061] A fourth aspect of the present disclosure provides a temperature-controlled steering wheel, comprising a main body and the temperature-control layer described in the first aspect of the present disclosure.

[0062] In one embodiment, if Figure 1-2As shown, in the temperature control layer 1 of the temperature control steering wheel, the polymer matrix forms a polymer network structure, and the phase change microcapsules are dispersed in the polymer network structure of the polymer matrix. When the ambient temperature changes, the phase change microcapsules can change between the core material solidification state and the core material melting state, absorb or release heat, so that the steering wheel temperature is stable near the phase change point for a long time, thereby improving the use comfort of the steering wheel.

[0063] According to an embodiment of the present disclosure, the body includes a frame. The present disclosure does not specifically limit the type of the frame, which may be a conventional type in the art, for example, a metal frame, a carbon fiber frame, etc.

[0064] According to an embodiment of the present disclosure, the temperature-controlled steering wheel further includes a protective layer, and the protective layer covers the temperature-controlled layer. The present disclosure does not specifically limit the material of the protective layer, and it can be any conventional material in the art, for example, the protective layer can be leather and / or fabric.

[0065] According to an embodiment of the present disclosure, the temperature-controlled steering wheel further comprises a heat exchange device, and the heat exchange device is used to exchange heat with the temperature-control layer. The above embodiment is conducive to improving the comfort of human use.

[0066] According to an embodiment of the present disclosure, the heat exchange device is a heating device and / or a ventilation device. The above embodiment is conducive to improving the comfort of human body.

[0067] A fifth aspect of the present disclosure provides a vehicle, comprising the temperature control layer as described in the first aspect of the present disclosure, or the vehicle interior material as described in the third aspect of the present disclosure, or the temperature control steering wheel as described in the fourth aspect of the present disclosure.

[0068] The present disclosure is described in detail below with reference to embodiments, but the present disclosure is not limited thereto.

[0069] Example 1 The phase change microcapsules used in this example were purchased from InnoPCM New Materials Co., Ltd., with the trade name InnoPCM-35FC. 50 The particle size is 20 μm. The phase change microcapsule includes a capsule wall and a core material. The core material is paraffin. The phase change temperature is 28°C. The capsule wall is polyurethane. The phase change latent heat of the phase change microcapsule is 190 J / g. This embodiment is used to prepare a temperature control layer. The specific method is as follows: (1) 80 g of phase change microcapsules were mixed with 200 ml of isocyanate (trade name: BASF CW5010-103 CB), one of the polyurethane raw materials, and mixed for more than 8 minutes using a high-speed stirrer at a rotation speed of 5500 rpm to obtain a first mixture; (2) The first mixture in (1) was mixed with another reaction raw material of polyurethane, polyether polyol (weight average molecular weight of 6500), and mixed with a high-speed stirrer at a speed of 5500 rpm for 8 seconds to obtain a second mixture; the mass ratio of phase change microcapsules to polyurethane polymer raw materials was 0.18:1; (3) The second mixture is then immediately injected into the mold and matured to obtain a temperature control layer.

[0070] The temperature control layer of this embodiment includes a polyurethane matrix and phase change microcapsules dispersed in the polymer matrix. Based on the weight of the temperature control layer, the weight content of the phase change microcapsules is about 15wt%.

[0071] Example 2 This embodiment is the same as embodiment 1, except that the mass ratio of phase change microcapsules to polyurethane polymer raw materials in step (2) is 0.11:1. In this embodiment 2, based on the weight of the temperature control layer, the weight content of the phase change microcapsules is 10wt%.

[0072] Example 3 This embodiment is the same as embodiment 1, except that the mass ratio of phase change microcapsules to polyurethane polymer raw materials in step (2) is 0.4:1. In this embodiment 3, based on the weight of the temperature control layer, the weight content of the phase change microcapsules is 29wt%.

[0073] Example 4 The preparation method of this embodiment is the same as that of embodiment 1, except that the phase change microcapsules used were purchased from Daxita Company. 50 The particle size is 10 μm. The phase change microcapsule includes a capsule wall and a core material. The core material is paraffin. The phase change temperature is 28° C. The capsule wall is silicon oxide. The phase change latent heat of the phase change microcapsule is 120 J / g.

[0074] Example 5 This embodiment is the same as embodiment 1, except that the mass ratio of phase change microcapsules to polyurethane polymer raw materials in step (2) is 0.25:1. In this embodiment 5, the weight content of phase change microcapsules is 20wt% based on the weight of the temperature control layer.

[0075] Example 6 The preparation method of this embodiment is the same as that of embodiment 1, except that the phase change microcapsules used are purchased from InnoPCM New Materials Company with the trade name InnoPCM-28FC, D 50 The particle size is 20 μm. The phase change microcapsule includes a capsule wall and a core material. The core material is paraffin. The phase change temperature is 28° C. The capsule wall is polyacrylic acid. The phase change latent heat of the phase change microcapsule is 160 J / g.

[0076] Comparative Example 1 The preparation method of this comparative example is the same as that of Example 1, except that no phase change microcapsules are added during the preparation process.

[0077] Test Example 1 The cell structures of the temperature control layers of the above embodiments and comparative examples were tested to illustrate the mechanical properties of the temperature control layers: Figure 2 This is a photo of the material obtained in Example 1 in a 25cm*10cm*5cm mold. Using an optical microscope, it can be seen that the pores of Example 1 are evenly distributed and the structure size is uniform, indicating that the temperature control layer of Example 1 is evenly stressed and has good mechanical properties, which is comparable to that of Comparative Example 1; the pore structures and distributions of Examples 2 and 5 are similar to those of Example 1, and they have comparable mechanical properties to those of Example 1; Figure 3 This is a photo of the cell structure of the temperature control layer obtained in Example 3 in a mold with a diameter of 16 cm and a height of 22 cm. It can be seen that the local cell structure is uneven; Figure 4 This is a photo of the cell structure of the temperature control layer obtained in a 25cm*10cm*5cm mold in Example 4. It can be seen that the local cell distribution is uneven; Figure 5 This is a photo of the pore structure of the temperature control layer obtained in a 25cm*10cm*5cm mold in Example 6. Only a small number of pores are uneven in size, which can meet the use requirements.

[0078] Test Example 2 The temperature control performance of the temperature control layer obtained in the above embodiment and comparative example was tested, and the test method was as follows: in the same environment at 25°C, the same person (body temperature is 34°C) held the temperature control layer material for the same time (2s), then released the material, took photos of the temperature of the test material using an infrared thermometer, alternately held the material and took photos to measure the temperature, and recorded the time when the highest temperature shown in the thermal imaging of the material was 28°C and exceeded 28°C, and the time difference was the time the temperature control layer maintained the phase change point temperature; the test results are as follows: The temperature control layer of comparative example 1 has no latent heat of phase change. Within 2 seconds after being touched by a human body, the temperature of the temperature control layer rises to the same level as that of the human body, and the temperature control performance cannot be achieved. Example 1 maintains the temperature at 28°C for 1 min; Example 2 maintains the temperature at 28°C for 0.5 min; Example 3 maintains the temperature at 28°C for 1.6 min; Example 4 maintains the temperature at 28°C for 1 min; Example 5 maintains the temperature at 28°C for 1.2 min; Example 6 maintains the temperature at 28°C for 1 min.

[0079] According to the test results, the temperature control layer of the present invention achieves temperature regulation by dispersing phase change microcapsules in a polymer matrix without changing the original structure, so that the temperature control layer can maintain a comfortable temperature for the human body for a long time, thereby improving the comfort of human use.

[0080] Compared with Example 3, the mass content of the phase change microcapsules in Example 1 is within the preferred range of the present disclosure, the pore structure of the temperature control layer is more uniform, the force is uniform, and it has better mechanical properties and safety performance.

[0081] Compared with Example 4, the capsule wall of the phase change microcapsule of Example 1 is the preferred type of the present disclosure, the pore structure of the temperature control layer is more uniform, the force is uniform, and it has better mechanical properties and safety performance.

[0082] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0083] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0084] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A temperature control layer, characterized in that: The temperature control layer includes a polymer matrix and phase change microcapsules dispersed in the polymer matrix.

2. The temperature control layer according to claim 1, wherein: Based on the weight of the temperature control layer, the weight content of the phase change microcapsules is less than 20wt%.

3. The temperature control layer according to claim 1, wherein: Based on the weight of the temperature control layer, the weight content of the phase change microcapsules is 10-15wt%.

4. The temperature control layer according to claim 1, wherein: The particle size of the phase-change microgel is 1-100 μm, and / or the phase-change latent heat of the phase-change microcapsule is above 100 J / g.

5. The temperature control layer according to claim 1, wherein: The phase-change microcapsule comprises a capsule wall and a core material; the core material is a solid-liquid phase-change material with a phase-change temperature of 26-32° C.; and / or the capsule wall comprises a material with a melting point of more than 300° C.

6. The temperature control layer according to claim 5, wherein: The core material includes one or more of paraffin, Na2HPO4·12H2O, Na2SO4·10H2O, Na2CO3·7H2O, Na2SiO3·5H2O, gallium and gallium alloy.

7. The temperature control layer according to claim 5, wherein: The capsule wall comprises an organic polymer and / or an inorganic oxide; the organic polymer comprises one or more of polyurethane, polyacrylic acid, polyacrylate, silicone rubber, melamine and polyurea resin; the inorganic oxide comprises one or more of silicon oxide, aluminum oxide and titanium dioxide.

8. The temperature control layer according to claim 5, wherein: The capsule wall comprises polyurethane.

9. The temperature control layer according to claim 1, wherein: The polymer matrix comprises a foamed material.

10. The temperature control layer according to claim 1, wherein: The polymer matrix comprises polyurethane; and / or the polymer matrix comprises a rubber material, and the rubber material comprises one or more of synthetic rubber and natural rubber.

11. A method for preparing the temperature control layer according to any one of claims 1 to 10, characterized in that: The method comprises: mixing the polymer raw material of the polymer matrix with the phase change microcapsules, and subjecting the obtained mixture to a polymerization reaction.

12. The method according to claim 11, wherein: The polymerization raw material includes a plurality of reactants, the phase change microcapsule is mixed with one of the reactants, and then is contacted with the remaining polymerization raw materials to carry out the polymerization reaction.

13. The method according to claim 11, wherein: The polymerization raw materials include isocyanate and polyol; The method comprises: first mixing the phase change microcapsules with the isocyanate, and contacting the first mixture with the polyol to perform the polymerization reaction; Optionally, the weight average molecular weight of the polyol is 3000-7000, and the polyol includes polyether polyol and / or polyester polyol.

14. The method according to claim 11, wherein: The mass ratio of the polymer raw materials of the phase change microcapsules to the polymer matrix is ​​(0.05-0.25):

1.

15. The method according to claim 11, wherein: The temperature control layer is used for manufacturing a steering wheel, and the polymerization reaction is carried out in a steering wheel mold.

16. A vehicle interior material, characterized in that: It comprises the temperature control layer as described in any one of claims 1 to 10.

17. A temperature-controlled steering wheel, characterized in that: The temperature-controlled steering wheel comprises a main body and a temperature-control layer as described in any one of claims 1-10.

18. The temperature controlled steering wheel according to claim 17, wherein: The temperature-controlled steering wheel also includes a protective layer, and the protective layer covers the temperature-control layer.

19. The temperature controlled steering wheel according to claim 17, wherein: The temperature-controlled steering wheel also includes a heat exchange device, which is used to exchange heat with the temperature-control layer.

20. The temperature controlled steering wheel according to claim 19, wherein: The heat exchange device is a heating device and / or a ventilation device.

21. A vehicle, characterized in that: The vehicle comprises the temperature control layer according to any one of claims 1-10, or the vehicle interior material according to claim 16, or the temperature control steering wheel according to any one of claims 17-20.

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