Thermoplastic elastomer composite material as well as preparation method and application thereof

Abstract

The invention particularly relates to a thermoplastic elastomer composite material as well as a preparation method and application thereof. The preparation method of the thermoplastic elastomer composite material comprises the following steps: dissolving dopamine hydrochloride in water, then adding ethanolamine and glycerol, uniformly mixing and reacting to obtain a mixed liquid containing polydopamine; uniformly mixing the mixed liquid containing the polydopamine with polyvinyl alcohol, standing and swelling to obtain polydopamine plasticized polyvinyl alcohol; and mixing the obtained polydopamine plasticized polyvinyl alcohol with a thermoplastic elastomer (TPE), and carrying out melt blending and granulation in an extruder to obtain the thermoplastic elastomer composite material. The thermoplastic elastomer composite material is simple and convenient to prepare, and the raw materials are economical, green and environment-friendly. The friction coefficient of the TPE can be effectively improved by using the TPE composite material, and the TPE composite material has a better anti-skid effect when being applied to the ground mat, so that the TPE composite material has a better commercial application prospect.

Description

Technical Field

[0001] The present invention relates to the technical field of polymer composite materials, and in particular to a composite material and a preparation method and application thereof. Background Art

[0002] In daily life, floor mats are often laid on the ground to remove dust and keep the indoor floor clean. The bottom is mostly a smooth plane. The friction coefficient between this smooth plane and the ground is very small, especially when the ground is relatively wet. The friction coefficient between the floor mat and the ground is even smaller. When people step on the floor mat, the floor mat may slide and shift, causing the center of gravity of the human body to be unstable and fall. At present, the number of accidental slips, injuries and disabilities caused by slippery ground is increasing. There are countless compensation cases caused by slipping problems, which seriously affect people's physical and mental health. The so-called "anti-slip tiles" on the market are only anti-slip when the ground is dry, but they will also slip once they come into contact with water. Most slip accidents are caused by slippery ground after coming into contact with water. For homes and public living places, the floor materials are mainly wooden floors and ceramic floor tiles. The places that need to enhance anti-slip are usually wet environments such as bathrooms. Such environments are relatively small in area, and the most common anti-slip measure is to lay anti-slip mats on the ground.

[0003] Plastic anti-skid mats are a type of product with a wide range of applications, many places of use, and a large number of active or passive users. The base material of this type of product is mainly PVC, and the anti-skid performance of the product is good. However, the content of phthalates in the product is generally high. Phthalate esters are Class 2B carcinogens and are a common type of semi-volatile organic matter. The main way of harm is that phthalates that migrate to the air and dust particles in it are inhaled into the body, which is harmful to human health.

[0004] Thermoplastic elastomer (TPE) is a polymer phase that is soft at high temperature but becomes fluid after high temperature melting, while other discontinuous phases are polymer phases that are soft and elastic at room temperature. TPE combines the elasticity of vulcanized rubber at room temperature with the excellent processability and recyclability of plastics at high temperature, and can replace some traditional vulcanized rubbers and resins. Therefore, replacing traditional vulcanized rubber with TPE can not only improve production efficiency, but also better save energy and utilize resources. In recent years, TPE has developed rapidly, and now there are many types of TPE applications in many fields. Products made of TPE anti-slip pads have good resilience, wear resistance, tear resistance, good tensile strength, excellent anti-slip performance, comfortable feel, good environmental resistance, and can adapt to various harsh weather environments in my country. Whether it is in low temperature weather of minus 40℃ or in outdoor environments up to 80℃, it can be used normally.

[0005] Conventional TPE floor mats do not have good anti-slip performance. Once the ground is wet, users are prone to slipping and falling. This is because when water falls on the road, it does not simply cover the ground, but forms a thin layer of water film. This layer of water film will change the contact state between the ground and the floor mat, reducing the friction between the floor mat and the ground, which makes it easy to slip. In order to increase the dry friction between the floor mat and the ground, the hygroscopicity of the floor mat can be used to absorb the water film on the surface of the ground, so that the floor mat can form direct contact with the ground surface, so as to achieve the purpose of increasing dry friction and reducing wet friction, thereby playing an anti-slip role. Now there is an urgent need for a TPE floor mat material with good hydrophilicity to solve the above problems. Summary of the invention

[0006] In view of the problems existing in the prior art, the present invention proposes a thermoplastic elastomer composite material and its preparation method and application. The defects and shortcomings of the existing floor mats with poor anti-slip performance are overcome, and the thermoplastic elastomer composite material of the present invention is applied to the floor mats, which effectively improves the friction coefficient of the floor mats, especially the wet friction coefficient, thereby improving the anti-slip performance of the floor mats.

[0007] In order to achieve the above object, the technical solution of the present invention is achieved as follows:

[0008] A method for preparing a thermoplastic elastomer composite material comprises the following steps:

[0009] (1) dissolving dopamine hydrochloride in water, then adding ethanolamine and glycerol, mixing evenly and reacting to obtain a mixed liquid containing polydopamine;

[0010] (2) uniformly mixing the mixed liquid containing polydopamine and polyvinyl alcohol, and allowing to stand and swell to obtain polydopamine-plasticized polyvinyl alcohol;

[0011] (3) Mixing the polydopamine plasticized polyvinyl alcohol obtained in step (2) and a thermoplastic elastomer TPE, melt blending and granulating in an extruder to obtain a thermoplastic elastomer composite material.

[0012] Preferably, in step (1), the mass ratio of dopamine hydrochloride, ethanolamine, glycerol and water is 0.5-2:5-10:100:100.

[0014] Preferably, the reaction temperature in step (1) is 30-50°C and the reaction time is 6-12h.

[0015] Preferably, in step (2), the mass ratio of the mixed liquid containing polydopamine to polyvinyl alcohol is 1-2:3-4.

[0016] Preferably, the temperature for static swelling in step (2) is 50-80°C and the time is 3-6 hours.

[0017] Preferably, the polyvinyl alcohol in step (2) is PVA1799 or PVA2499.

[0018] Preferably, in step (3), the mass ratio of polydopamine plasticized polyvinyl alcohol to thermoplastic elastomer TPE is 1-3:7-9, the mixing temperature is 40-60°C, the mixing time is 30-120 min; and the extrusion temperature is 165-185°C.

[0019] Preferably, the method prepares a thermoplastic elastomer composite material.

[0020] Preferably, the thermoplastic elastomer composite material is used in a floor mat.

[0021] Preferably, the floor mat is a non-slip floor mat.

[0022] Beneficial effects of the present invention:

[0023] 1. The present invention provides a method for preparing a thermoplastic elastomer composite material. Thermoplastic elastomer has excellent comprehensive properties and is widely used in the field of floor mats. The water-absorbent polymer polyvinyl alcohol not only has excellent water absorption and moisture absorption functions, but also has excellent oxygen resistance, oil resistance, wear resistance, tear resistance, antistatic, chemical corrosion resistance and other properties. Therefore, a thermoplastic elastomer is used as a matrix and melt-blended with PVA to give the TPE polymer material for floor mats a unique water absorption and moisture resistance and anti-slip function, and a composite material with anti-slip function and meeting the use requirements is prepared through a simple molding and processing technology. The composite material prepared by this patent can absorb water on the ground, gradually convert wet friction into dry friction, and improve the anti-slip performance of the material. It will have broad application prospects when applied to the field of floor mat materials.

[0024] 2. The polarity of polyvinyl alcohol and thermoplastic elastomer is quite different, so the compatibility between them is poor. The present invention adopts water, ethanolamine and glycerol as mixed plasticizers of polyvinyl alcohol, utilizes the alkaline environment provided by ethanolamine in the plasticizer, and hydrochloric acid dopamine is polymerized in situ into polydopamine in the polyvinyl alcohol plasticizer, and then the plasticizer containing polydopamine is plasticized on polyvinyl alcohol, and the thermoplastic elastomer is modified by using the plasticized polyvinyl alcohol. Polydopamine contains a large amount of groups such as hydroxyl and imino groups, and plays the role of compatibilizer between polyvinyl alcohol and thermoplastic elastomer, thereby increasing the compatibility of polyvinyl alcohol and thermoplastic elastomer.

[0025] 3. Polydopamine can adhere to almost all types of material surfaces, including inert substrates, so it is vividly called "universal glue". In the present invention, by introducing polydopamine, the composite material is given stronger adhesion and the dry and wet friction coefficient of the floor mat product is increased.

[0026] 4. The polyvinyl alcohol, thermoplastic elastomer, water, glycerol and ethanolamine used in the present invention are all environmentally friendly additives, and the anti-slip modified thermoplastic elastomer can be recycled and reused. Therefore, the present invention complies with the national environmental protection concept and meets the requirements of sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 The following are sample photos, where Picture A is Comparative Example 1 (pure TPE), Picture B is Comparative Example 2, and Picture C is Example 1.

[0029] Figure 2 The contact angle photos of the samples, wherein Picture A is Comparative Example (pure TPE) 1, Picture B is Comparative Example 2, and Picture C is Example 1.

[0030] Figure 3 It is a cross-sectional scanning electron microscope image, wherein picture A is comparative example 2, and picture B is example 1. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Raw materials: thermoplastic elastomer (TPE), Dongguan Shanyi Plastics Co., Ltd.; polyvinyl alcohol, China Petrochemical Group Chongqing Chuanwei Chemical Co., Ltd., dopamine hydrochloride, Shanghai McLean Biochemical Technology Co., Ltd. In the following examples and comparative examples, 1 part = 1 g.

[0033] Example 1

[0034] This embodiment prepares a thermoplastic elastomer composite material, and the preparation steps are as follows:

[0035] (1) Add 2 parts of dopamine hydrochloride to 100 parts of deionized water, stir to dissolve the dopamine hydrochloride, and obtain an aqueous solution of dopamine hydrochloride. Add 10 parts of ethanolamine and 100 parts of glycerol to the aqueous solution of dopamine hydrochloride, mix well, and let stand at 50° C. for 6 hours. During this process, due to the alkaline environment provided by ethanolamine, dopamine hydrochloride is in situ polymerized to generate polydopamine, and a mixed liquid containing polydopamine is obtained.

[0036] (2) 40 parts of a mixed liquid of polydopamine as a polyvinyl alcohol plasticizer and 60 parts of polyvinyl alcohol 1799 are put into a high-speed mixer and mixed evenly; the mixture is allowed to stand at 80° C. for 3 hours to fully swell and plasticize, thereby obtaining plasticized polyvinyl alcohol.

[0037] (3) 30 parts of plasticized polyvinyl alcohol and 70 parts of thermoplastic elastomer are put into a high-speed mixer at a temperature of 60° C., mixed evenly, and melt-blended and granulated at 175° C. using a twin-screw extruder to obtain an anti-slip thermoplastic elastomer composite material for floor mats.

[0038] The obtained pellets were placed in a mold, and hot pressed in a flat vulcanized bed for 15 minutes at a molding temperature of 170°C and a pressure of 20MPa to obtain a sample for performance testing. The obtained product was tested for dry friction coefficient and wet friction coefficient according to GB / T 3903.37-2008, and for tensile strength and elongation at break according to GB / T 1040-2006. The dry friction coefficient was 0.81, the wet friction coefficient was 1.02, the tensile strength was 2.9MPa, and the elongation at break was 620%.

[0039] Comparative Example 1

[0040] This comparative example provides a TPE material, which is the same TPE material as in Example 1 and has not been modified.

[0041] Pure TPE was placed in a mold, and hot pressed in a flat vulcanized bed for 15 minutes at a molding temperature of 170°C and a pressure of 20MPa to obtain a sample for performance testing. The obtained product was tested for dry friction coefficient and wet friction coefficient according to GB / T 3903.37-2008, and for tensile strength and elongation at break according to GB / T 1040-2006. The dry friction coefficient was 0.35, the wet friction coefficient was 0.24, the tensile strength was 3.1MPa, and the elongation at break was 650%.

[0042] Comparative Example 2

[0043] This comparative example provides a composite material, which is different from Example 1 in that no polydopamine is generated in situ in the plasticizer in step (1), and the preparation method is:

[0044] (1) 100 parts of deionized water, 10 parts of ethanolamine and 100 parts of glycerol were mixed uniformly and allowed to stand at 50° C. for 6 hours to obtain a mixed plasticizer; the remaining steps (2) and (3) were the same as those in Example 1, specifically:

[0045] (2) Take 40 parts of the mixed liquid of step (1) as a polyvinyl alcohol plasticizer and 60 parts of polyvinyl alcohol 1799, put them into a high-speed mixer and mix them evenly; let them stand at 80° C. for 3 hours to fully swell and plasticize, thereby obtaining plasticized polyvinyl alcohol.

[0046] (3) 30 parts of plasticized polyvinyl alcohol and 70 parts of thermoplastic elastomer are put into a high-speed mixer at a temperature of 60° C., mixed evenly, and melt-blended and granulated at 175° C. using a twin-screw extruder to obtain an anti-slip thermoplastic elastomer composite material for floor mats.

[0047] The obtained pellets were placed in a mold, and hot pressed in a flat vulcanized bed for 15 minutes at a molding temperature of 170°C and a pressure of 20MPa to obtain a sample for performance testing. The obtained product was tested for dry friction coefficient and wet friction coefficient according to GB / T 3903.37-2008, and for tensile strength and elongation at break according to GB / T 1040-2006. The dry friction coefficient was 0.33, the wet friction coefficient was 0.42, the tensile strength was 2.2MPa, and the elongation at break was 410%.

[0048] Figure 1 The sample photos are shown in Figure 1, where Picture A is Comparative Example (pure TPE) 1, Picture B is Comparative Example 2, and Picture C is Example 1. It can be seen from the figure that pure TPE particles are white; Comparative Example 2 is only modified by blending with plasticized polyvinyl alcohol, and the color is basically unchanged; Example 1 introduces polydopamine on the basis of Comparative Example 2, and the color becomes darker.

[0049] Figure 2 The contact angle diagram is shown in Figure 1, where Picture A is Comparative Example (pure TPE) 1, Picture B is Comparative Example 2, and Picture C is Example 1. It can be seen from the figure that the contact angle of the sample prepared by pure TPE is 99.3°, and the hydrophilicity is poor. Comparative Example 2 is only modified by blending with plasticized polyvinyl alcohol, and the contact angle of the sample is 76.6°. This is because polyvinyl alcohol has water absorption and hydrophilicity, so the hydrophilicity of the modified sample is increased; after the introduction of dopamine (Example 1), the contact angle of the sample is 30.3°, and the hydrophilicity is further increased.

[0050] Figure 3The following are cross-sectional SEM images, with Picture A being Comparative Example 2 and Picture B being Example 1. As can be seen from Picture A, in Comparative Example 2, polyvinyl alcohol is dispersed more evenly in TPE, but the interface between the two phases is obvious. The small holes in the picture are caused by the "debonding" phenomenon caused by the external force separating PVA from the matrix TPE during the preparation of the scanning sample, indicating that the two are incompatible; Picture B is Example 1, and the polydopamine introduced during the preparation process makes the interface between PVA and TPE more blurred. This is because the introduction of polydopamine leads to a greater degree of interfacial bonding, which greatly improves the compatibility of PVA and TPU, which were originally completely incompatible.

[0051] Example 2

[0052] This embodiment prepares a thermoplastic elastomer composite material, and the preparation steps are as follows:

[0053] (1) 0.5 parts of dopamine hydrochloride are added to 100 parts of deionized water, and the dopamine hydrochloride is dissolved by stirring to obtain an aqueous solution of dopamine hydrochloride. 5 parts of ethanolamine and 100 parts of glycerol are added to the aqueous solution of dopamine hydrochloride, and the mixture is mixed evenly. The mixture is allowed to stand at 30° C. for 12 hours. During this process, due to the alkaline environment provided by ethanolamine, dopamine hydrochloride is polymerized in situ to generate polydopamine, thereby obtaining a mixed liquid containing polydopamine.

[0054] (2) Take 20 parts of the mixed liquid of polydopamine as a polyvinyl alcohol plasticizer and 80 parts of polyvinyl alcohol 1799, put them into a high-speed mixer and mix them evenly; let them stand at 50° C. for 6 hours to fully swell and plasticize, and obtain plasticized polyvinyl alcohol.

[0055] (3) 10 parts of plasticized polyvinyl alcohol and 90 parts of thermoplastic elastomer were put into a high-speed mixer at a temperature of 40°C, mixed evenly, and melt-blended and granulated at 165°C using a twin-screw extruder to obtain an anti-slip thermoplastic elastomer composite material for floor mats. The obtained granules were put into a mold, and hot-pressed in a flat vulcanized bed for 15 minutes at a molding temperature of 170°C and a pressure of 20 MPa to obtain a sample for performance testing.

[0056] Example 3

[0057] This embodiment prepares a thermoplastic elastomer composite material, and the preparation steps are as follows:

[0058] (1) Add 1 part of dopamine hydrochloride to 100 parts of deionized water, stir to dissolve the dopamine hydrochloride, and obtain an aqueous solution of dopamine hydrochloride. Add 8 parts of ethanolamine and 100 parts of glycerol to the aqueous solution of dopamine hydrochloride, mix well, and let stand at 40° C. for 10 hours. During this process, due to the alkaline environment provided by ethanolamine, dopamine hydrochloride is in situ polymerized to generate polydopamine, and a mixed liquid containing polydopamine is obtained.

[0059] (2) 30 parts of a mixed liquid of polydopamine as a polyvinyl alcohol plasticizer and 70 parts of polyvinyl alcohol 2499 are put into a high-speed mixer and mixed evenly; the mixture is allowed to stand at 60° C. for 5 hours to fully swell and plasticize, thereby obtaining plasticized polyvinyl alcohol.

[0060] (3) 20 parts of plasticized polyvinyl alcohol and 80 parts of thermoplastic elastomer are put into a high-speed mixer at a temperature of 45° C., mixed evenly, and melt-blended and granulated at 185° C. using a twin-screw extruder to obtain an anti-slip thermoplastic elastomer composite material for floor mats.

[0061] The obtained pellets were placed in a mold, and hot pressed in a flat vulcanized bed for 15 minutes at a molding temperature of 170°C and a pressure of 20MPa to obtain a sample for performance testing. The obtained product was tested for dry friction coefficient and wet friction coefficient according to GB / T 3903.37-2008, and for tensile strength and elongation at break according to GB / T 1040-2006. The dry friction coefficient was 0.63, the wet friction coefficient was 0.82, the tensile strength was 2.7MPa, and the elongation at break was 590%.

[0062] Example 4

[0063] This embodiment prepares a thermoplastic elastomer composite material, and the preparation steps are as follows:

[0064] (1) 1.5 parts of dopamine hydrochloride are added to 100 parts of deionized water, and the dopamine hydrochloride is dissolved by stirring to obtain an aqueous solution of dopamine hydrochloride. 9 parts of ethanolamine and 100 parts of glycerol are added to the aqueous solution of dopamine hydrochloride, mixed evenly, and allowed to stand at 45° C. for 9 hours. During this process, due to the alkaline environment provided by ethanolamine, dopamine hydrochloride is polymerized in situ to generate polydopamine, thereby obtaining a mixed liquid containing polydopamine.

[0065] (2) Take 25 parts of the mixed liquid of polydopamine as a polyvinyl alcohol plasticizer and 75 parts of polyvinyl alcohol 2499, put them into a high-speed mixer and mix them evenly; let them stand at 55° C. for 4.5 hours to fully swell and plasticize, and obtain plasticized polyvinyl alcohol.

[0066] (3) 25 parts of plasticized polyvinyl alcohol and 75 parts of thermoplastic elastomer are put into a high-speed mixer at a temperature of 52° C., mixed evenly, and melt-blended and granulated at 176° C. using a twin-screw extruder to obtain an anti-slip thermoplastic elastomer composite material for floor mats.

[0067] The obtained pellets were placed in a mold, and hot pressed in a flat vulcanized bed for 15 minutes at a molding temperature of 170°C and a pressure of 20MPa to obtain a sample for performance testing. The obtained product was tested for dry friction coefficient and wet friction coefficient according to GB / T 3903.37-2008, and for tensile strength and elongation at break according to GB / T 1040-2006. The dry friction coefficient was 0.42, the wet friction coefficient was 0.62, the tensile strength was 3.2MPa, and the elongation at break was 580%.

[0068] Example 5

[0069] This embodiment prepares a thermoplastic elastomer composite material, and the preparation steps are as follows:

[0070] (1) 0.8 parts of dopamine hydrochloride are added to 100 parts of deionized water, and the mixture is stirred to dissolve the dopamine hydrochloride to obtain an aqueous solution of dopamine hydrochloride. 6 parts of ethanolamine and 100 parts of glycerol are added to the aqueous solution of dopamine hydrochloride, and the mixture is mixed evenly. The mixture is allowed to stand at 36° C. for 8 hours. During this process, due to the alkaline environment provided by the ethanolamine, the dopamine hydrochloride is polymerized in situ to generate polydopamine, thereby obtaining a mixed liquid containing polydopamine.

[0071] (2) Take 27 parts of the mixed liquid of polydopamine as a polyvinyl alcohol plasticizer and 73 parts of polyvinyl alcohol 2499, put them into a high-speed mixer and mix them evenly; let them stand at 65° C. for 4 hours to fully swell and plasticize, and obtain plasticized polyvinyl alcohol.

[0072] (3) 15 parts of plasticized polyvinyl alcohol and 85 parts of thermoplastic elastomer were put into a high-speed mixer at a temperature of 52°C, mixed evenly, and melt-blended and granulated at 178°C using a twin-screw extruder to obtain an anti-slip thermoplastic elastomer composite material for floor mats. The obtained granules were placed in a mold, and hot-pressed in a flat vulcanized bed for 15 minutes at a molding temperature of 170°C and a pressure of 20MPa to obtain a sample for performance testing. The obtained product was tested for dry friction coefficient and wet friction coefficient according to GB / T 3903.37-2008, and for tensile strength and elongation at break according to GB / T 1040-2006. The dry friction coefficient was 0.46, the wet friction coefficient was 0.71, the tensile strength was 3.1MPa, and the elongation at break was 620%.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for preparing a thermoplastic elastomer composite material, characterized in that: The following steps are involved: (1) dissolving dopamine hydrochloride in water, then adding ethanolamine and glycerol, mixing evenly and reacting to obtain a mixed liquid containing polydopamine; (2) uniformly mixing the mixed liquid containing polydopamine and polyvinyl alcohol, and allowing the mixture to stand and swell to obtain polydopamine-plasticized polyvinyl alcohol; (3) Mixing the polydopamine plasticized polyvinyl alcohol obtained in step (2) and a thermoplastic elastomer TPE, melt blending and granulating in an extruder to obtain a thermoplastic elastomer composite material.

2. The method for preparing the thermoplastic elastomer composite material according to claim 1, characterized in that: In the step (1), the mass ratio of dopamine hydrochloride, ethanolamine, glycerol and water is 0.5-2:5-10:100:

100.

3. The method for preparing the thermoplastic elastomer composite material according to claim 1 or 2, characterized in that: The reaction temperature in step (1) is 30-50°C and the reaction time is 6-12h.

4. The method for preparing a thermoplastic elastomer composite material according to claim 1, characterized in that: In the step (2), the mass ratio of the mixed liquid containing polydopamine to polyvinyl alcohol is 1-2:3-4.

5. The method for preparing the thermoplastic elastomer composite material according to claim 1, characterized in that: The temperature for standing and swelling in step (2) is 50-80°C and the time is 3-6 hours.

6. The method for preparing the thermoplastic elastomer composite material according to claim 1, characterized in that: In the step (2), the polyvinyl alcohol is PVA1799 or PVA2499.

7. The method for preparing the thermoplastic elastomer composite material according to claim 1, characterized in that: In the step (3), the mass ratio of polydopamine plasticized polyvinyl alcohol to thermoplastic elastomer TPE is 1-3:7-9, the mixing temperature is 40-60°C, the mixing time is 30-120min; and the extrusion temperature is 165-185°C.

8. Thermoplastic elastomer composite material prepared by the method according to any one of claims 1 to 7.

9. Use of the thermoplastic elastomer composite material according to claim 8 in floor mats.

10. The use according to claim 9, characterized in that: The floor mat is a non-slip floor mat.

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