Photothermal-driven shape-memory heat storage and temperature-regulating phase change material, its preparation method and application

Abstract

The present invention relates to the technical field of new energy materials, and specifically relates to a photothermal-driven shape-memory heat storage and temperature-regulating phase change material, its preparation method and application, which includes a polyurethane phase change material and a photothermal conversion material; the polyurethane phase change material includes a polyether polyol, a polyester polyol, an isocyanate and a small molecule polyol; wherein, the molar ratio of the polyether polyol to the polyester polyol is 1:(1-1000), and the molecular weight of the polyether polyol is 10,000-900,000; the photothermal conversion material includes one or more of carbon-based materials such as graphene, graphene oxide, and carbon nanotubes. This phase change material simultaneously has high enthalpy value, high strength, photothermal conversion performance, good flexibility and reversible shape memory property, and the preparation method is simple and the cost is low, and it can be widely used in fields such as artificial muscle fibers, heat storage and temperature-regulating smart textiles, and thermal management.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy materials, and in particular to a photothermal driven shape memory heat storage temperature regulating phase change material and a preparation method and application thereof. Background Art

[0002] Phase change heat storage and temperature control technology uses phase change materials that absorb and release a large amount of latent heat as the medium. It has the advantages of high energy storage density, constant temperature during energy storage and release, and recyclable use. It can be widely used in solar energy storage, smart buildings, electronic equipment thermal control, battery thermal management and other fields. Among them, solid-solid phase change materials have no phase separation, small supercooling, small volume change, no leakage, no need for packaging, and are easy to process and shape. They are a type of phase change material worthy of vigorous development.

[0003] As an inexhaustible, clean, and environmentally friendly renewable energy, solar energy has great potential application value. However, solar radiation has the disadvantages of low energy density and being greatly affected by climate and seasons, which limits its direct application. Using photothermal conversion materials to absorb solar energy can achieve efficient utilization of solar energy. Using photothermal conversion phase change energy storage technology, it can not only effectively absorb solar heat and undergo phase transition, but also store solar energy, and release heat energy through the phase change process when needed, which can effectively alleviate the energy crisis and achieve efficient energy saving. Therefore, the development and utilization of photothermal driven phase change energy storage materials is of great significance for the efficient use of solar energy and solving the problem of energy shortage. In addition, phase change energy storage materials with photothermal driven shape memory can also use the stored light energy to drive shape changes and release energy at the same time in the case of power shortage, which has great potential application value in thermal management, smart textiles, and artificial muscles.

[0004] Patent CN202111292485.2 discloses a high thermal conductivity, low leakage photothermal conversion stereotyped phase change material and preparation method, which is polymerized with 4,4-dicyclohexylmethane diisocyanate as the hard segment material, polyethylene glycol of different molecular weights as the soft segment, and Ti3C2Tx and nano-CuS as photothermal conversion materials. This invention endows the stereotyped phase change material with high thermal conductivity and photothermal conversion properties through the high thermal conductivity of Ti3C2Tx and nano-CuS and the surface plasma resonance effect. HMDI constrains the PEG molecules to a certain extent, thereby effectively solving the leakage problem during use. However, the photothermal conversion performance, mechanical properties and shape memory of the phase change material obtained by this method are not mentioned, so it needs further research and improvement to meet the needs of various application scenarios.

[0005] Patent CN201810067001.6 discloses a photothermal conversion polyurethane energy storage film material, its preparation method and the film. It is prepared from the following components: polyethylene glycol, oligomeric polyether or polyester diol, diisocyanate, small molecule diol, and dihydroxy dye; the molecular weight of the polyethylene glycol is 2000 - 20000; the molecular weight of the oligomeric polyether or polyester diol is 500 - 3000; the dihydroxy dye contains two free active hydroxyl groups and can absorb visible light of 380 - 780 nm. Through the covalent bond - typed dye and the heat storage characteristics of the shaped phase - change material, the film has both photothermal conversion and heat energy storage functions. However, its photothermal conversion performance is not good, and it does not have high elasticity and shape - memory function.

[0006] Therefore, it is necessary to provide an improved photothermal - driven shape - memory heat - storage and temperature - regulating phase - change material to solve the above problems. Summary of the Invention

[0007] The purpose of the present invention is to provide a photothermal - driven shape - memory heat - storage and temperature - regulating phase - change material, its preparation method and application. By in - situ compounding a photothermal conversion material with an improved polyurethane phase - change material, its mechanical strength is significantly improved, and it simultaneously has the photothermal conversion ability, the function of driving shape recovery, as well as good flexibility and phase - change enthalpy value.

[0008] To achieve the above purpose, in the first aspect, the present invention provides a photothermal - driven shape - memory heat - storage and temperature - regulating phase - change material, which includes a polyurethane phase - change material and a photothermal conversion material;

[0009] The synthesis raw materials of the polyurethane phase - change material include polyether - type polyol, polyester - type polyol, isocyanate and small - molecule polyol; among them, the molar ratio of the polyether - type polyol to the polyester - type polyol is 1:(1 - 1000), and the molecular weight of the polyether - type polyol is 10000 - 900000;

[0010] The photothermal conversion material (light - absorbing material) includes one or more of carbon - based materials such as graphene, graphene oxide, and carbon nanotubes.

[0011] The present invention has found through research that by compounding a small amount of photothermal - conversion carbon - based materials in the improved self - made polyurethane phase - change material, a shape - memory heat - storage and temperature - regulating phase - change material with ultra - high deformation and photothermal conversion ability can be obtained. Its mechanical strength is significantly enhanced compared with the polyurethane phase - change material, and it has a high photothermal conversion efficiency and storage capacity.

[0012] Among them, the improved self-made polyurethane phase change material of the present invention uses polyester polyol and polyether polyol with an ultra-long molecular chain as the polyurethane soft segment, reacts with diisocyanate, and by adjusting the content of each component, a polyurethane solid-solid phase change material with excellent flexibility can be obtained. After being compounded with the carbon-based material, the mechanical strength is significantly enhanced, and good flexibility is still maintained.

[0013] Furthermore, the addition amount of the photothermal conversion material is 0.1-3 wt% of the mass of the polyurethane phase change material, preferably 0.5-1.5 wt%; more preferably 1 wt%. Its tensile strength can be increased by about 2 times compared with the polyurethane phase change material. Moreover, only a small amount of addition is required to achieve a photothermal conversion efficiency and storage capacity of more than 90%.

[0014] And / or, the photothermal conversion material at least includes graphene. It is found that graphene has better effects than graphene oxide or carbon nanotubes.

[0015] Furthermore, the molecular weight of the polyether polyol is 100,000-700,000; preferably 300,000-600,000; for example, 300,000, 400,000, 500,000, 600,000; the molecular weight of the polyester polyol is 500-3,500; for example, 800, 1,000, 2,000, 3,000, 3,500, etc., usually referring to the weight-average molecular weight.

[0016] And / or, the molar ratio of the polyether polyol to the polyester polyol is 1:(100-1000), preferably 1:(200-700), more preferably 1:400.

[0017] Furthermore, the addition amount of the small molecule polyol is 0.01%-0.3% of the total mass of the polyether polyol, polyester polyol and isocyanate;, preferably 0.16%.

[0018] And / or, the small molecule polyol is one or more of D-sorbitol, D-mannitol, erythritol, xylitol, D-arabitol, 1,4-butanediol.

[0019] Furthermore, the polyether polyol includes one or more of polyethylene glycol, polypropylene glycol, polytetramethylene glycol, polyethylene oxide, polypropylene oxide diol, poly-1,4-oxytetramethylene glycol;

[0020] And / or, the polyester polyol includes one or more of polycaprolactone diol, adipic acid diol, ethylene glycol adipate diol, propylene glycol adipate diol, butanediol adipate diol, hexanediol butanediol adipate diol, butanediol hexanediol adipate diol, polycarbonate diol, diethylene glycol phthalate diol, 1,6 - hexanediol phthalate diol, neopentyl glycol phthalate diol;

[0021] The isocyanate includes one or more of toluene diisocyanate, diphenylmethane diisocyanate, 4,4 - dicyclohexylmethane diisocyanate, 1,5 - naphthalene diisocyanate, p - phenylene diisocyanate, xylylene diisocyanate, 1,4 - cyclohexane diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate.

[0022] In a second aspect, the present invention provides a preparation method of the photothermal - driven shape - memory heat - storage and temperature - regulating phase - change material as described in any one of the above, including: before the raw materials of the polyurethane phase - change material are completely polymerized, adding the photothermal conversion material, and after the polymerization is completed, obtaining the photothermal - driven shape - memory heat - storage and temperature - regulating phase - change material. By adding the photothermal conversion material before the completion of the polymerization reaction in the present invention, the photothermal conversion efficiency and storage capacity can be improved, which helps to obtain a phase - change material with better comprehensive performance.

[0023] Furthermore, it includes the following steps:

[0024] S1. React the polyester polyol with the isocyanate under the action of a catalyst to obtain a terminal isocyanate prepolymer one;

[0025] S2. React the terminal isocyanate prepolymer one with the polyether polyol to obtain a terminal isocyanate prepolymer two; the molecular weight of the polyether polyol is 10000 - 900000; the molar ratio of the polyether polyol to the polyester polyol is 1:(1 - 1000); preferably 1:(200 - 700);

[0026] S3. Continuously react the terminal isocyanate prepolymer two with the small - molecule polyol for a preset time, then add the photothermal conversion material, and continue to react for 24 - 48 h to obtain the photothermal - driven shape - memory energy - storage and temperature - regulating phase - change material.

[0027] Furthermore, in step S1, the catalyst is one or more of dibutyltin dilaurate, tetrabutyl titanate, tertiary amines, non - tin organic compounds, oleic acid, adipic acid, potassium hydroxide.

[0028] Furthermore, the preparation method includes the following steps:

[0029] S1. After drying the polyester polyol, add isocyanate. Under the protection of a nitrogen atmosphere, continuously stir and react at a temperature of 65 - 75°C for 45 - 60 min, then add a catalyst and continuously react for 60 - 120 min to obtain the first terminal isocyanate prepolymer;

[0030] The index of the isocyanate is 0.95 - 1.05; the molecular weight of the polyester polyol is 500 - 3500;

[0031] S2. Add the dried polyether polyol to the first terminal isocyanate prepolymer and stir and react at 65 - 75°C for 60 - 180 min to obtain the second terminal isocyanate prepolymer;

[0032] S3. Add the small molecule polyol to the second terminal isocyanate prepolymer and continuously stir and react at 75 - 85°C for 60 - 120 min to obtain the polyurethane prepolymer;

[0033] S4. Add the photothermal conversion material to the polyurethane prepolymer and continuously stir and react at 25 - 40°C for 24 - 48 h, then dry in vacuum at 80°C to obtain the photothermal - driven shape - memory heat - storage and temperature - regulating phase - change material.

[0034] Obtain the heat - storage and temperature - regulating phase - change material with ultra - high deformation through graft polymerization and polycondensation polymerization. At the same time, composite carbon - based materials such as graphene by in - situ polymerization to endow the material with photothermal conversion ability and realize photothermal - driven shape recovery.

[0035] In a third aspect, the present invention provides an application of the photothermal - driven shape - memory heat - storage and temperature - regulating phase - change material described in any one of the above or the photothermal - driven shape - memory heat - storage and temperature - regulating phase - change material obtained by the preparation method described in any one of the above. The photothermal - driven shape - memory heat - storage and temperature - regulating phase - change material is used in artificial muscle fibers, heat - storage and temperature - regulating smart textiles, and the field of thermal management.

[0036] The beneficial effects of the present invention are as follows:

[0037] 1. The photothermal - driven shape - memory heat - storage and temperature - regulating phase - change material provided by the present invention, through in - situ composite of the photothermal conversion material and the improved polyurethane phase - change material, can obtain a polyurethane solid - solid phase - change material with excellent tensile strength and flexibility, which can avoid the leakage problem during the use of the material. The phase - change temperature of this polyurethane phase - change material can be adjusted within 60 - 70°C, and at the same time, it has high enthalpy value, high strength, photothermal conversion and driving shape - recovery functions, good flexibility and reversible shape - memory property, can realize multiple cycles and maintain shape stability, and has good thermal - cycle durability.

[0038] 2. The preparation method of the present invention is simple, can be implemented in various ways, has low cost, is green and environmentally friendly, and is suitable for industrial application. The product has a wide range of heat storage and temperature regulation, stable physical properties, stable flexibility and reversible shape memory, and can be used in fields such as artificial muscle fibers, heat storage and temperature regulation intelligent textiles, and thermal management. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0040] Figure 1 Thermal analysis diagrams of the photothermal-driven shape memory heat storage and temperature regulation phase change material prepared in Example 1 and the raw materials used;

[0041] Figure 2 XRD spectra of the photothermal-driven shape memory heat storage and temperature regulation phase change material prepared in Example 1 and the raw materials used;

[0042] Figure 3 XRD spectra of the photothermal-driven shape memory heat storage and temperature regulation phase change material prepared in Example 1 at different temperatures;

[0043] Figure 4 Stress-strain curves and load-strain curves of the polyurethane phase change material and the photothermal-driven shape memory heat storage and temperature regulation phase change material prepared in Example 1;

[0044] Figure 5 Stress / load-strain change curves of the photothermal-driven shape memory heat storage and temperature regulation phase change material prepared in Example 1 under different stress conditions;

[0045] Figure 6 Time-temperature curves of the polyurethane phase change material and the photothermal-driven shape memory heat storage and temperature regulation phase change material prepared in Example 1 under different light conditions;

[0046] Figure 7 Stress-strain curves and load-strain curves of the photothermal-driven shape memory heat storage and temperature regulation phase change material with different graphene addition amounts;

[0047] Figure 8 Photothermal conversion efficiency and storage capacity (η) of the photothermal-driven shape memory heat storage and temperature regulation phase change material with different graphene addition amounts;

[0048] Figure 9Stress-strain curves and load-strain curves of the photothermal-driven shape memory heat storage and temperature regulation phase change materials prepared in Examples 1, 5, and 6. Detailed implementation mode

[0049] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0050] Example 1

[0051] A photothermal-driven shape memory heat storage and temperature regulation phase change material is prepared by the following steps:

[0052] (1) Weigh 4 g of polycaprolactone diol (Mw = 1000), dry it at 120 °C for 2 h, then add 0.73 g of HDI (hexamethylene diisocyanate), continuously react for 60 min in a nitrogen atmosphere at 75 °C, add dibutyltin dilaurate, and then continuously react at 75 °C for 120 min to obtain an isocyanate-terminated prepolymer;

[0053] (2) Weigh 6 g of polyethylene oxide (Mn = 600000), dry it at 120 °C for 2 h, and uniformly disperse it in N,N-dimethylformamide solvent; after calculation, the molar ratio of polyethylene oxide to polycaprolactone diol is 1:400;

[0054] (3) Add the polyethylene oxide (also known as poly(ethylene oxide), Mn = 600000) solution to the isocyanate-terminated prepolymer obtained in step (1), and continuously react at 75 °C for 180 min;

[0055] (4) Weigh 0.02 g of D-sorbitol and add it to the product of step (3), raise the temperature of the system to 80 °C, continuously react for 120 min to obtain a polyurethane prepolymer; then add graphene and continuously stir and react at 25 - 40 °C for 24 h to obtain a graphene composite polyurethane solution with ultra-high molecular weight; wherein, the addition amount of graphene is 1 wt% of the total mass of polycaprolactone diol, HDI, polyethylene oxide and D-sorbitol;

[0056] (5) Place the polyurethane solution obtained in step (4) in a vacuum environment at 80 °C for curing and drying to obtain the photothermal-driven shape memory heat storage and temperature regulation phase change material.

[0057] From Figure 1It can be seen that the photothermal-driven shape-memory heat storage and temperature-regulating phase change material prepared in this example has a wide temperature-regulating range and a high enthalpy value, showing good heat storage and temperature-regulating performance. The melting temperature is 61.3 °C, and the melting phase change enthalpy value is 105.2 J / g; the crystallization temperature is 45 °C, and the crystallization phase change enthalpy value is 105.0 J / g. For the polyurethane phase change material without graphene added, the melting temperature is 61.3 °C, the melting phase change enthalpy value is 110.3 J / g, the crystallization temperature is 43.7 °C, and the crystallization phase change enthalpy value is 108.0 J / g.

[0058] From Figure 2 it can be seen that the photothermal-driven shape-memory heat storage and temperature-regulating phase change material prepared in this example has good crystallization performance; from Figure 3 it can be seen that the crystallization behavior of the photothermal-driven shape-memory heat storage and temperature-regulating phase change material can change with temperature. The crystallization property is good at low temperatures. As the temperature rises, the phase change material gradually changes from a highly regular arrangement to an amorphous state.

[0059] From Figure 4 it can be seen that the tensile strength of the polyurethane phase change material without graphene added is about 10.4 MPa, and the elongation at break is about 1728.0%. At this time, the maximum force can reach 15.3 N. The tensile strength of the photothermal-driven shape-memory heat storage and temperature-regulating phase change material prepared in this example is about 19.1 MPa, and the elongation at break is about 1544.3%. At this time, the maximum force can reach 87.6 N. The mechanical strength is significantly improved, and it still has good flexibility. It can be seen that the present invention can have both a high enthalpy value and excellent mechanical properties.

[0060] From Figure 5 it can be seen that the photothermal-driven shape-memory heat storage and temperature-regulating phase change material prepared in this example can change its morphology with the loading and removal of the load force, and this change has cyclic stability.

[0061] From Figure 6 it can be seen that under the irradiation of a simulated solar light source (100 mW / cm 2 ), the temperature of the photothermal-driven shape-memory heat storage and temperature-regulating phase change material prepared in this example rises significantly under light irradiation. The photothermal conversion efficiency and storage capacity (η) are 92.8%, which is much higher than that of the polyurethane phase change material without graphene added.

[0062] Example 2

[0063] The difference from Example 1 is that the addition amount of graphene is 0.5 wt%.

[0064] Example 3

[0065] The difference from Example 1 is that the addition amount of graphene is 0.75 wt%.

[0066] Example 4

[0067] The difference from Example 1 is that the added amount of graphene is 1.5 wt %.

[0068] from Figure 7 It can be seen that by adding graphene, the tensile strength of polyurethane phase change materials is improved to varying degrees. When the amount of graphene added is too much or too little, the tensile strength is not significantly improved, and the elongation at break is significantly reduced. When the addition amount is 1.0wt%, the mechanical properties are optimal. Figure 8 It can be seen that with the increase of graphene addition, the photothermal conversion efficiency and storage capacity (η) first increase and then decrease.

[0069] Example 5

[0070] The difference from Example 1 is that graphene is replaced by graphene oxide.

[0071] Example 6

[0072] The difference from Example 1 is that graphene is replaced by carbon nanotubes.

[0073] from Figure 9 It can be seen that when graphene oxide or carbon nanotubes are used, the tensile strength is also improved and the elongation at break is reduced. When various combinations of graphene, graphene oxide and carbon nanotubes are used, there are also different degrees of improvement.

[0074] Table 1 Enthalpy test results of Examples 1-6

[0075]

[0076] The present invention is a further improvement based on the homemade polyurethane phase change material. The raw material composition ratio of the polyurethane phase change material is not elaborated in this application. For details, please refer to patent CN202310510480.5, which is also applicable to this application. Only by adjusting the graphene content, the mechanical properties can be significantly improved, and the heat storage and temperature regulating phase change material with photothermal conversion driven deformation can be obtained.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A photothermal-driven shape-memory heat storage and temperature-regulating phase change material, characterized in that It includes a polyurethane phase change material and a photothermal conversion material; The raw materials of the polyurethane phase change material include a polyether polyol, a polyester polyol, an isocyanate, and a small molecule polyol; wherein, the molar ratio of the polyether polyol to the polyester polyol is 1:(1 - 1000), and the molecular weight of the polyether polyol is 600000 - 900000; The polyether polyol is polyethylene oxide; The small molecule polyol is one or more of D-sorbitol, D-mannitol, erythritol, xylitol, D-arabitol; The photothermal conversion material includes one or more of graphene, graphene oxide, and carbon nanotubes.

2. The photothermal-driven shape-memory heat storage and temperature-regulating phase change material according to claim 1, characterized in that The addition amount of the photothermal conversion material is 0.1 - 3 wt% of the mass of the polyurethane phase change material; And / or, the photothermal conversion material at least includes graphene.

3. The photothermal-driven shape-memory heat storage and temperature-regulating phase change material according to claim 2, wherein The addition amount of the photothermal conversion material is 0.5 - 1.5 wt% of the mass of the polyurethane phase change material.

4. The photothermal-driven shape memory heat storage and temperature regulating phase change material according to claim 1, characterized in that The molecular weight of the polyether polyol is 600000 - 700000; the molecular weight of the polyester polyol is 500 - 3500; And / or, the molar ratio of the polyether polyol to the polyester polyol is 1:(100 - 1000).

5. The photothermal-driven shape-memory heat storage and temperature-regulating phase change material according to claim 4, wherein The molar ratio of the polyether polyol to the polyester polyol is 1:(200 - 700).

6. The photothermal-driven shape memory heat storage and temperature-regulating phase change material according to claim 1, characterized in that The addition amount of the small molecule polyol is 0.01% - 0.3% of the total mass of the polyether polyol, polyester polyol, and isocyanate.

7. The photothermal-driven shape memory heat storage and temperature-regulating phase change material according to claim 1, wherein The polyester polyol includes one or more of polycaprolactone diol, polyethylene adipate diol, polypropylene adipate diol, polybutylene adipate diol, poly(hexylene adipate-co-butylene adipate) diol, polycarbonate diol, poly(ethylene glycol phthalate) diol, poly(1,6-hexanediol phthalate) diol, poly(neopentyl glycol phthalate) diol; The isocyanate includes one or more of toluene diisocyanate, diphenylmethane diisocyanate, 4,4'-dicyclohexylmethane diisocyanate, 1,5-naphthalene diisocyanate, p-phenylene diisocyanate, xylylene diisocyanate, 1,4-cyclohexane diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate.

8. A method for preparing a photothermal-driven shape-memory heat storage and temperature-regulating phase change material according to any one of claims 1-7, characterized in that, It includes: Before the raw materials of the polyurethane phase change material are completely polymerized, the photothermal conversion material is added, and after the polymerization is completed, the photothermal-driven shape memory heat storage and temperature regulation phase change material is obtained.

9. The preparation method of the photothermal-driven shape memory heat storage and temperature-regulating phase change material according to claim 8, characterized in that, It includes the following steps: S1. React the polyester polyol and the isocyanate under the action of a catalyst to obtain a terminal isocyanate prepolymer one; S2. React the terminal isocyanate prepolymer one with the polyether polyol to obtain a terminal isocyanate prepolymer two; the molar ratio of the polyether polyol to the polyester polyol is 1:(1 - 1000); S3. Continuously react the terminal isocyanate prepolymer two with the small molecule polyol for a preset time, then add the photothermal conversion material, and continue to react for 24 - 48 hours to obtain the photothermal-driven shape memory energy storage and temperature regulation phase change material.

10. The preparation method of the photothermal-driven shape-memory heat storage and temperature-regulating phase change material according to claim 9, wherein In step S1, the catalyst is one or more of dibutyltin dilaurate, tetrabutyl titanate, tertiary amines, and potassium hydroxide.

11. An application of the photothermal-driven shape memory heat storage and temperature-regulating phase change material according to any one of claims 1 to 7 or the photothermal-driven shape memory heat storage and temperature-regulating phase change material obtained by the preparation method according to any one of claims 8 to 10, characterized in that, The photothermal-driven shape-memory heat storage and temperature-regulating phase change material is used in artificial muscle fibers, heat storage and temperature-regulating smart textiles, and the field of thermal management.

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