High-temperature-resistant hydrolysis-resistant bright-surface TPU (thermoplastic polyurethane) material and preparation method thereof

Abstract

The invention relates to the technical field of TPU processing, in particular to a high-temperature-resistant hydrolysis-resistant bright-surface TPU material and a preparation method thereof. Comprising the following raw materials in parts by weight: 50-60 parts of a polyurethane elastomer, 15-30 parts of an ethylene-octylene copolymer, 5-10 parts of an ethylene-acrylate copolymer, 20-30 parts of a filler, 4-8 parts of mixed oil, 1-2 parts of a compatilizer and 1-2 parts of a silane coupling agent, wherein the mixed oil is prepared from white oil, vinyl silicone oil and castor oil according to a weight ratio of (4-6): 1: (2-3); the filler is composed of white carbon black, mica powder and crystal stone powder according to the weight ratio of (10-15): 3: (20-25), the high-temperature-resistant hydrolysis-resistant bright-surface TPU material prepared according to the formula can be directly used for preparing a pipeline, the pipeline with the bright-surface effect can be obtained, and no surface treatment is needed. Meanwhile, the TPU material also has good high temperature resistance and hydrolysis resistance, so that the TPU material can still keep good mechanical properties and chemical stability in a high-temperature and high-humidity environment, and the use requirements of the chemical industry on the material in a complex environment are met.

Description

Technical Field

[0001] The present application relates to the field of TPU processing technology, and more specifically, to a high-temperature resistant and hydrolysis-resistant bright-surface TPU material and a preparation method thereof. Background Art

[0002] In the chemical industry, TPU materials are used to manufacture various pipes and hoses that are exposed to long-term exposure to chemicals such as acids, alkalis, salts, and organic solvents. For example, pipes in oil refining are subject to corrosion from high-temperature oil, gas, and various chemical additives. Glossy TPU materials, with their high gloss and mirror-like finish, add a dazzling and beautiful appearance to products, creating a premium and refined feel that meets consumers' demand for stylish and aesthetically pleasing products. Using glossy TPU materials to manufacture pipes more clearly reflects the surface condition of pipes and hoses. Minor leaks or surface damage will reveal changes in reflected light, facilitating timely detection and treatment, thereby improving chemical production safety. Furthermore, glossy TPU materials enhance the appearance of chemical equipment, pipes, and hoses, creating a high-end, clean, and polished appearance. This improves the visual appeal of the entire chemical production environment and meets the aesthetic requirements of modern industrial production.

[0003] In order to achieve the bright surface effect of the pipeline, the following methods are mainly used: First, mechanical polishing is used to make the surface of the TPU material smoother and flatter, reducing surface defects and roughness, thereby improving the glossiness; second, a layer of high-gloss coating such as polyurethane UV glue coating is applied to the surface of the TPU, and then cured by ultraviolet light, which can significantly improve the surface glossiness; third, physical vapor deposition technology, such as electron beam physical vapor deposition technology, is used to deposit nano-metal films on the surface of the TPU to form an optical coating layer, so that the TPU material has high gloss and special optical color effects. The above methods all have good bright surface effects, but mechanical polishing requires repeated operations; the coating of UV coating requires precise control of the coating thickness and curing time; PVD deposition speed is slow and requires high vacuum conditions. These process steps are complicated and time-consuming, which reduces production efficiency and makes it difficult to meet the needs of rapid production and large-scale supply. Summary of the Invention

[0004] In order to improve the glossy effect of TPU pipes, the present application provides a high-temperature resistant and hydrolysis-resistant glossy TPU material and a preparation method thereof.

[0005] In the first aspect, the present application provides a high-temperature resistant and hydrolysis-resistant glossy TPU material, which adopts the following technical solution: A high-temperature resistant and hydrolysis-resistant glossy TPU material is prepared by including the following raw materials in parts by weight: 50-60 parts polyurethane elastomer 15-30 parts of ethylene-octene copolymer 5-10 parts of ethylene-acrylate copolymer 20-30 parts of filler 4-8 parts mixed oil 1-2 parts compatibilizer 1-2 parts of silane coupling agent The mixed oil is composed of white oil, vinyl silicone oil and castor oil in a weight ratio of (4-6):1:(2-3); The filler consists of white carbon black, mica powder and crystal stone powder in a weight ratio of (10-15):3:(20-25).

[0006] The high-temperature and hydrolysis-resistant glossy TPU material produced by adopting the above technical solution can be directly used in the manufacture of pipes, resulting in pipes with a glossy finish without any surface treatment. Furthermore, the TPU material exhibits excellent high-temperature and hydrolysis resistance, enabling it to maintain excellent mechanical properties and chemical stability in high-temperature and high-humidity environments, meeting the chemical industry's requirements for materials used in complex environments.

[0007] In this application, polyurethane elastomer, ethylene-octene copolymer, ethylene-acrylate copolymer and filler are combined to make TPU material have good high temperature resistance and corrosion resistance. The silica, mica, and crystal stone powders in the filler, along with the white oil, vinyl silicone oil, and castor oil in the blended oil, work together to create a smooth, even, glossy finish on the TPU surface. This finish maintains gloss and a mirror-like finish over time, resisting loss of gloss due to environmental factors or prolonged use. The filler, composed of silica, mica, and crystal stone powder in specific proportions, effectively improves the material's surface hardness and smoothness, while reducing surface defects and roughness, resulting in a high gloss and mirror-like finish. The blended oil, composed of white oil, vinyl silicone oil, and castor oil in specific proportions, effectively reduces surface roughness, improving smoothness and gloss, and achieving a superior glossy finish.

[0008] Preferably, the polyurethane elastomer is a polyether polyurethane elastomer.

[0009] By adopting the above-mentioned technical solution, the type of polyurethane elastomer is optimized and combined with components such as ethylene-acrylate copolymer that improve surface hardness and gloss. This can improve the hardness and wear resistance of the material surface while maintaining flexibility, reduce surface scratches and wear, and thus make the glossy effect more lasting. It can also cooperate with other components such as fillers and mixed oils to jointly improve the glossy effect.

[0010] Preferably, the filler is treated by the following method: 1) Place the filler in a hydrogen peroxide solution, heat to 40-50°C, ultrasonically disperse for 10-20 minutes, filter, collect the filter residue, and blow dry to obtain an activated filler; 2) Under nitrogen protection, the activated filler is placed in N, N-dimethylformamide, the temperature is raised to 70-90° C., an isocyanate silane coupling agent is added, and the mixture is stirred for 1-2 hours. A catalyst is added, and the polyester polyol solution is added dropwise. After the addition is complete, the reaction is continued for 2-4 hours. During the reaction, stirring is maintained to prevent agglomeration. The mixture is filtered while hot and rinsed with N, N-dimethylformamide to obtain a treated filler; The polyester polyol solution consists of polyester polyol and solvent in a weight ratio of 1:(4-6).

[0011] By adopting the above technical solution, the surface activity of the filler is significantly improved after special treatment, and it can form a more stable interface with the polyurethane elastomer and other components. The filler surface is activated by hydrogen peroxide solution treatment, and the active groups are increased, making it easier to react with the isocyanate silane coupling agent. The reaction of the isocyanate silane coupling agent and the polyester polyol solution is used to form a functional layer with reactive activity, which enhances the compatibility and dispersibility between the filler and the matrix. The treated filler has good hydrolysis resistance and can isolate moisture from the polyurethane matrix, thereby slowing down the hydrolysis rate of the polyurethane material, improving the hydrolysis resistance of the material, and extending the service life of the material in humid or water environments. At the same time, it can increase the glass transition temperature and thermal decomposition temperature of the TPU material, so that the material can maintain better stability and dimensional accuracy in high temperature environments, and is less likely to suffer from thermal deformation or performance degradation.

[0012] The surface of the filler after activation treatment is smoother and is evenly dispersed in the matrix, which can reduce light scattering caused by rough or agglomerated filler surfaces, making the material surface smoother and smoother, thereby improving the bright surface effect of the material.

[0013] Preferably, the weight ratio of the filler, the isocyanate silane coupling agent, the polyester polyol solution and the catalyst is 10:(0.8-1.2):(15-20):0.01.

[0014] By employing this technical solution and optimizing the specific weight ratios of filler, isocyanate-silane coupling agent, polyester polyol solution, and catalyst, the compatibility and dispersibility of the filler within the TPU matrix can be significantly improved. This allows for a tighter bond with substrates such as polyurethane elastomers, thereby enhancing the material's overall mechanical properties and hydrolysis resistance. This ratio results in a more uniform microstructure in the resulting TPU material, improving its high-temperature resistance and glossy finish.

[0015] Preferably, at 190° C. / 2.16 kg, the melt index of the ethylene-octene copolymer is 12-75 g / min.

[0016] By adopting this technical solution, the melt index of ethylene-octene copolymer is controlled within the range of 12-75 g / min, improving the material's fluidity and plasticity, thereby reducing equipment load during processing and improving production efficiency. Furthermore, a melt index within this range helps ensure uniformity and stability during the molding process, further enhancing the heat and hydrolysis resistance of the final TPU material, as well as its glossy finish.

[0017] Preferably, the ethylene-acrylate copolymer is composed of ethylene-methyl methacrylate copolymer and ethylene-butyl acrylate copolymer in a weight ratio of (5-9):1.

[0018] By adopting the above technical solution, the ethylene-acrylate copolymer, composed of ethylene-methyl methacrylate copolymer and ethylene-butyl acrylate copolymer in a specific weight ratio, can effectively improve the chemical resistance and mechanical strength of the TPU material. Specifically, the copolymer in this ratio imparts the TPU material with improved flexibility and tear resistance, while also enhancing its resistance to chemical media such as acids, alkalis, and salts, ensuring the material's long-term stability in complex chemical environments. Furthermore, this combination optimizes the processing properties of the TPU material, making it more uniform and stable during the extrusion and molding processes, thereby enhancing the glossiness and appearance quality of the final product.

[0019] Preferably, the compatibilizer includes one of ethylene-acrylate-maleic anhydride terpolymer, polyethylene grafted with maleic anhydride, EPDM grafted with maleic anhydride, maleic anhydride grafted with octene copolymer and maleic anhydride grafted with styrene-butadiene-styrene block copolymer.

[0020] By adopting the above technical solution and optimizing the type of compatibilizer, the compatibility between the polyurethane elastomer and other components can be effectively improved. This can significantly enhance the interfacial bonding between the polyurethane elastomer and the ethylene-octene copolymer, ethylene-acrylate copolymer, and filler, reduce phase separation, and improve the mechanical properties and durability of the material. Furthermore, the introduction of this compatibilizer helps optimize the material's processing properties and make the preparation process more stable. The resulting TPU material exhibits excellent high-temperature resistance, hydrolysis resistance, and a glossy finish.

[0021] Preferably, the invention further comprises 0.1-0.5 parts by weight of a light stabilizer, wherein the light stabilizer comprises at least one of benzophenones, benzotriazoles and salicylates.

[0022] By adopting the above technical solution, adding 0.1-0.5 parts by weight of a light stabilizer can significantly improve the light aging resistance of TPU materials. Benzophenone, benzotriazole, and salicylate light stabilizers effectively absorb ultraviolet light and inhibit photooxidation, thereby reducing material degradation caused by light exposure and extending the material's service life. Combined with the other ingredients in the summary solution, the addition of this light stabilizer further enhances the overall weather resistance of the TPU material, maintaining its performance even more reliably under long-term exposure to UV light.

[0023] In a second aspect, the present application provides a method for preparing a high-temperature resistant and hydrolysis-resistant glossy TPU material, which adopts the following technical solution: A method for preparing a high-temperature-resistant and hydrolysis-resistant glossy TPU material comprises the following preparation steps.

[0024] The polyurethane elastomer, ethylene-octene copolymer, ethylene-acrylate copolymer, filler, mixed oil, compatibilizer and silane coupling agent are mixed, extruded and granulated to obtain a high-temperature resistant and hydrolysis-resistant bright surface TPU material.

[0025] The above-mentioned technical solution achieves a simple and efficient preparation method, enabling thorough mixing of the raw material components to ensure stable material performance. By rationally combining raw materials such as polyurethane elastomer, ethylene-octene copolymer, and ethylene-acrylate copolymer, the resulting TPU material exhibits excellent high-temperature and hydrolysis resistance, making it suitable for long-term use in complex chemical environments.

[0026] In summary, this application has the following beneficial effects: 1. The TPU material, prepared from a specific ratio of polyurethane elastomer, ethylene-octene copolymer, ethylene-acrylate copolymer, and filler, significantly improves the material's high-temperature and hydrolysis resistance, extending the service life of pipes and hoses in complex chemical environments. 2. The specially designed filler formula and its processing technology effectively improve the smoothness and glossiness of the TPU material surface, achieving a high-gloss surface effect, which helps to more clearly reflect the surface status of the pipeline, facilitates the timely detection of minor leaks or damage, and thus improves the safety of chemical production; 3. The material formula is simple and does not require additional complex surface treatment technology, which simplifies the production process, significantly improves production efficiency, and meets the needs of rapid production and large-scale supply. DETAILED DESCRIPTION Example

[0027] Polyether polyurethane elastomer was purchased from Wuxi Weixinlong Plastic Import and Export Co., Ltd., model GP 92ATNAT 022.

[0028] Vinyl silicone oil was purchased from Qingdao Baisenmao New Materials Co., Ltd., model BSM209.

[0029] White oil was purchased from Jiangxi Bage Lubrication Technology Co., Ltd., with a kinematic viscosity of 15.6 cSt at 40°C.

[0030] Castor oil was purchased from Wuhan Jiyesheng Chemical Co., Ltd. with a CAS number of 8001-78-3 and a purity specification of 99%.

[0031] Ethylene-methyl methacrylate copolymer was purchased from Shanghai Zhaohe Plastics Co., Ltd., model WH303-F.

[0032] Ethylene-butyl acrylate copolymer was purchased from Suzhou Yitianli Plastic Co., Ltd. with the brand name HP441.

[0033] Ethylene-acrylate-maleic anhydride terpolymer was purchased from Aeruifu (Shanghai) New Material Technology Co., Ltd., model 4403.

[0034] Example 1 A high-temperature-resistant and hydrolysis-resistant glossy TPU material is prepared by the following method: 500 g of polyurethane elastomer, 150 g of ethylene-octene copolymer, 50 g of ethylene-acrylate copolymer, 200 g of filler, 40 g of mixed oil, 10 g of compatibilizer (ethylene-acrylate-maleic anhydride terpolymer) and 10 g of silane coupling agent (γ-mercaptopropyltrimethoxysilane) were mixed, extruded and granulated to obtain a high-temperature resistant and hydrolysis-resistant glossy TPU material.

[0035] The mixed oil consists of white oil, vinyl silicone oil and castor oil in a weight ratio of 4:1:2.

[0036] The filler is composed of white carbon black, mica powder and crystal stone powder in a weight ratio of 10:3:20.

[0037] Under the conditions of 190°C / 2.16kg, the melt index of the ethylene-octene copolymer is 12 g / min.

[0038] The ethylene-acrylate copolymer consists of an ethylene-methyl methacrylate copolymer and an ethylene-butyl acrylate copolymer in a weight ratio of 5:1.

[0039] The difference between Example 2-3 and Example 1 is that the raw material types, amounts and test parameters for preparing the high-temperature resistant and hydrolysis resistant glossy TPU material are different. The specific differences are shown in Table 1: Table 1: Raw material types, amounts and test parameters for preparing high temperature resistant and hydrolysis resistant glossy TPU materials in Examples 1-3 Example 4 A high-temperature-resistant and hydrolysis-resistant glossy TPU material. This embodiment differs from Example 1 in that the filler is treated by the following method: 1) Place 200 g of filler in 500 ml of hydrogen peroxide solution, heat to 40°C, and ultrasonically disperse for 10 minutes. Then filter, collect the filter residue, and blow dry to obtain the activated filler; 2) Under nitrogen protection, the activated filler was placed in 400 g of N, N-dimethylformamide, the temperature was raised to 70° C., 16 g of isocyanate silane coupling agent (3-isocyanate propyltrimethoxysilane) was added, and the mixture was stirred for 1 h. 0.2 g of catalyst (dibutyl dilauric acid) was added, and 150 g of polyester polyol solution was added dropwise. After the addition was completed, the reaction was continued for 2 h. During the reaction, stirring was maintained to prevent agglomeration. The mixture was filtered while hot and rinsed with N, N-dimethylformamide to obtain a treated filler; The polyester polyol solution consists of polyester polyol (polycaprolactone) and solvent (N,N-dimethylformamide) in a weight ratio of 1:4.

[0040] The molecular weight of polycaprolactone is 3000.

[0041] Example 5 A high-temperature-resistant and hydrolysis-resistant glossy TPU material. This embodiment differs from Example 1 in that the filler is treated by the following method: 1) Place 200 g of filler in 500 ml of hydrogen peroxide solution, heat to 50° C., ultrasonically disperse for 20 minutes, filter, collect the filter residue, and blow dry to obtain activated filler; 2) Under nitrogen protection, the activated filler was placed in 400 g of N, N-dimethylformamide, the temperature was raised to 90° C., 24 g of isocyanate silane coupling agent (γ-isocyanate propyltriethoxysilane) was added, and the mixture was stirred for 2 h. 0.2 g of catalyst (stannous octoate) was added, and 200 g of polyester polyol solution was added dropwise. After the addition was completed, the reaction was continued for 4 h. During the reaction, stirring was maintained to prevent agglomeration. The mixture was filtered while hot and rinsed with N, N-dimethylformamide to obtain a treated filler. The polyester polyol solution consists of polyester polyol (polycaprolactone) and solvent (N,N-dimethylformamide) in a weight ratio of 1:6.

[0042] The molecular weight of polycaprolactone is 3000.

[0043] Example 6 A high-temperature-resistant and hydrolysis-resistant glossy TPU material. The difference between this embodiment and embodiment 1 is that the ethylene-acrylate copolymer is an ethylene-methyl methacrylate copolymer.

[0044] Example 7 A high-temperature-resistant and hydrolysis-resistant glossy TPU material. This embodiment differs from Example 1 in that 1 g of a light stabilizer is further added, and the light stabilizer is 2-hydroxybenzophenone.

[0045] Example 8 A high-temperature-resistant and hydrolysis-resistant glossy TPU material. This embodiment differs from Embodiment 1 in that 5 g of a light stabilizer is further added. The light stabilizer is 2-(2'-hydroxy-3',5'-di-tert-butylphenyl)-2H-benzotriazole.

[0046] Comparative Example Comparative Example 1 A high-temperature-resistant and hydrolysis-resistant glossy TPU material. The difference between this comparative example and Example 1 is that the mixed oil is completely replaced by white oil.

[0047] Comparative Example 2 A high-temperature resistant and hydrolysis-resistant glossy TPU material. The difference between this comparative example and Example 1 is that the mixed oil consists of white oil and vinyl silicone oil in a weight ratio of 4:1.

[0048] Comparative Example 3 A high-temperature-resistant and hydrolysis-resistant bright-surface TPU material. The difference between this comparative example and Example 1 is that the filler is white carbon black.

[0049] Comparative Example 4 A high-temperature resistant and hydrolysis-resistant bright TPU material. The difference between this comparative example and Example 1 is that the filler consists of white carbon black and mica powder in a weight ratio of 10:3.

[0050] Comparative Example 5 A high-temperature-resistant and hydrolysis-resistant glossy TPU material. The difference between this comparative example and Example 1 is that the ethylene-acrylate copolymer is replaced by polyethylene.

[0051] The molecular weight of polyethylene is 4000.

[0052] Detection method / test method Breakage pressure: Prepare high temperature resistant and hydrolysis resistant glossy TPU material into water pipes, and test the breakage pressure according to GB / T4138-2011.

[0053] Heat resistance: The high temperature resistant and hydrolysis resistant glossy TPU material is prepared into water pipes, and the heat deformation temperature is tested according to GB / T4138-2011.

[0054] Glossiness test: ISO 2813 standard, using a gloss meter at a 60° angle to measure the glossiness of the polyurethane tube surface. A higher gloss value indicates a smoother surface and a better glossiness.

[0055] Aging resistance test: The high-temperature-resistant and hydrolysis-resistant glossy TPU materials of Example 1 and Examples 7-8 were prepared into water pipes, which were continuously irradiated under strong ultraviolet light for 7 days. After being taken out, their breaking pressure was measured.

[0056] Corrosion resistance: A water pipe made of high-temperature resistant and hydrolysis-resistant glossy TPU material was prepared. The pipe was immersed in an 85% hydrochloric acid solution for 48 hours, and then immersed in a 20% sodium hydroxide solution for 48 hours. The pipe was taken out and the tensile strength and heat resistance were tested. The experimental data are shown in Table 2: Table 2 Experimental data of Examples 1-8 and Comparative Examples 1-5 It can be seen from the experimental results of Example 1 and Comparative Examples 1-5 that in this application, by adding specific mixed oil, filler, ethylene-acrylate copolymer and other raw materials, the bright surface effect of high-temperature resistant and hydrolysis-resistant bright surface TPU material can be effectively improved, and its breakage pressure, heat resistance and corrosion resistance can also be improved.

[0057] It can be seen from the test results of Examples 1 and 4-5 that the filler is treated by a specific method in this application, which is beneficial to improving the bright surface effect of the high-temperature resistant and hydrolysis-resistant bright surface TPU material, and at the same time can also improve its breakage pressure, heat resistance and corrosion resistance.

[0058] It can be seen from the test results of Example 1 and Example 6 that the mixed use of ethylene-methyl methacrylate copolymer and ethylene-butyl acrylate copolymer in this application is beneficial to improving the glossy effect of the high-temperature resistant and hydrolysis-resistant glossy TPU material, while also improving its breakage pressure, heat resistance and corrosion resistance.

[0059] It can be seen from the test results of Example 1 and Examples 7-8 that the addition of a light stabilizer in the present application is beneficial to improving the weather resistance of the high-temperature resistant and hydrolysis-resistant glossy TPU material.

[0060] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A high temperature resistant and hydrolysis resistant bright surface TPU material, characterized in that: The preparation is obtained by including the following raw materials in parts by weight: 50-60 parts polyurethane elastomer 15-30 parts of ethylene-octene copolymer 5-10 parts of ethylene-acrylate copolymer 20-30 parts of filler 4-8 parts mixed oil 1-2 parts compatibilizer 1-2 parts of silane coupling agent The mixed oil is composed of white oil, vinyl silicone oil and castor oil in a weight ratio of (4-6):1:(2-3); The filler consists of white carbon black, mica powder and crystal stone powder in a weight ratio of (10-15):3:(20-25).

2. The high temperature resistant and hydrolysis resistant bright surface TPU material according to claim 1, characterized in that: The polyurethane elastomer is a polyether polyurethane elastomer.

3. The high temperature resistant and hydrolysis resistant bright surface TPU material according to claim 2, characterized in that: The filler is treated by the following method: 1) Place the filler in a hydrogen peroxide solution, heat to 40-50°C, and ultrasonically disperse for 10-20 minutes. Filter, collect the filter residue, and blow dry to obtain the activated filler. 2) Under nitrogen protection, place the activated filler in N,N-dimethylformamide, heat to 70-90°C, add isocyanate silane coupling agent, stir for 1-2 hours, add catalyst, and then dropwise add polyester polyol solution. After the addition is complete, continue the reaction for 2-4 hours. During the reaction, keep stirring to prevent agglomeration. Filter while hot and rinse with N,N-dimethylformamide to obtain the treated filler; The polyester polyol solution consists of polyester polyol and solvent in a weight ratio of 1:(4-6).

4. The high temperature and hydrolysis resistant bright surface TPU material according to claim 3, characterized in that: The weight ratio of the filler, the isocyanate silane coupling agent, the polyester polyol solution and the catalyst is 10:(0.8-1.2):(15-20):0.

01.

5. The high temperature resistant and hydrolysis resistant bright surface TPU material according to claim 1, characterized in that: Under the conditions of 190° C. / 2.16 kg, the melt index of the ethylene-octene copolymer is 12-75 g / min.

6. The high temperature resistant and hydrolysis resistant bright surface TPU material according to claim 1, characterized in that: The ethylene-acrylate copolymer is composed of ethylene-methyl methacrylate copolymer and ethylene-butyl acrylate copolymer in a weight ratio of (5-9):

1.

7. The high temperature and hydrolysis resistant bright surface TPU material according to claim 1, characterized in that: The silane coupling agent includes one of γ-mercaptopropyltrimethoxysilane, γ-mercaptopropyltriethoxysilane, γ-aminopropyltriethoxysilane and γ-aminopropyltrimethoxysilane.

8. The high temperature resistant and hydrolysis resistant bright surface TPU material according to claim 1, characterized in that: The compatibilizer includes one of ethylene-acrylate-maleic anhydride terpolymer, polyethylene grafted maleic anhydride, ethylene propylene diene monomer rubber grafted maleic anhydride, maleic anhydride grafted octene copolymer and maleic anhydride grafted styrene-butadiene-styrene block copolymer.

9. The high temperature resistant and hydrolysis resistant bright surface TPU material according to claim 1, characterized in that: The invention also includes 0.1-0.5 parts by weight of a light stabilizer, wherein the light stabilizer includes at least one of benzophenones, benzotriazoles and salicylates.

10. A method for preparing the high temperature resistant and hydrolysis resistant glossy TPU material according to any one of claims 1 to 9, characterized in that: The method comprises the following preparation steps: The polyurethane elastomer, ethylene-octene copolymer, ethylene-acrylate copolymer, filler, mixed oil, compatibilizer and silane coupling agent are mixed, extruded and granulated to obtain a high-temperature resistant and hydrolysis-resistant bright surface TPU material.

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