TPU lubricant master batch and preparation method thereof

Abstract

The invention relates to the technical field of high polymer materials, and particularly discloses a TPU lubricant master batch and a preparation method thereof. The TPU lubricant master batch is mainly prepared from the following raw materials in parts by weight: 30-50 parts of TPU resin, 40-60 parts of silicon dioxide, 1-3 parts of polyether modified polysiloxane, 2-4 parts of a silane coupling agent, 1-3 parts of a dispersing agent, 3-5 parts of a lubricant and 0.3-0.5 part of an antioxidant. According to the TPU lubricant master batch, through mutual cooperation of the raw materials, the addition amount of the TPU lubricant master batch in a TPU film is reduced on the basis that the TPU film has good friction coefficient, barrier property and tensile strength, so that the TPU film has better comprehensive performance, and the market demand is met.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of high polymer materials, in particular to a TPU slip agent master batch and a preparation method thereof. BACKGROUND

[0002] The TPU film is a thermoplastic polyurethane film, which is widely applied in the fields of garment bonding, electronic and electrical protection, medical dressing and packaging due to its excellent elasticity, wear resistance, high transparency and environmental protection and recycling characteristics. In the processing of the TPU film, the TPU slip agent master batch is often added in the TPU resin to reduce the friction coefficient and improve the processing fluidity and opening smoothness through the TPU slip agent master batch.

[0003] The raw materials of the TPU slip agent master batch in the prior art generally include TPU resin, silicon dioxide, dispersant, lubricant and antioxidant. The addition amount of the silicon dioxide is up to 30 wt% of the TPU resin, and the content of the silicon dioxide is low. When the TPU slip agent master batch is applied to the TPU film, a large amount of TPU slip agent master batch needs to be added in order to meet the demand for the friction coefficient. At this time, the addition of a large amount of TPU slip agent master batch reduces the barrier property and tensile strength of the TPU film. Based on this, how to reduce the addition amount of the TPU slip agent master batch in the TPU film while keeping the TPU film having good friction coefficient, barrier property and tensile strength has become a new topic to meet market demand and expand industry application. SUMMARY

[0004] In order to reduce the addition amount of the TPU slip agent master batch in the TPU film while keeping the TPU film having good friction coefficient, barrier property and tensile strength, the application provides a TPU slip agent master batch and a preparation method thereof.

[0005] In the first aspect, the application provides a TPU slip agent master batch, which adopts the following technical scheme: A TPU slip agent master batch is mainly made of the following raw materials by weight: 30-50 parts of TPU resin, 40-60 parts of silicon dioxide, 1-3 parts of polyether modified polysiloxane, 2-4 parts of silane coupling agent, 1-3 parts of dispersant, 3-5 parts of lubricant and 0.3-0.5 parts of antioxidant.

[0006] The TPU slip agent master batch of the application sets the content of the silicon dioxide at a high content of 40-60 parts by weight, and reduces the addition amount of the TPU slip agent master batch in the TPU film through the mutual cooperation between other raw materials while keeping the TPU film having good friction coefficient, barrier property and tensile strength. The addition amount of the TPU slip agent master batch is 2-4 wt% of the TPU resin. The dynamic friction coefficient of the TPU film is less than 0.2, the static water pressure resistance is greater than 73 kPa, the oxygen transmission amount is less than 600 cm 3 / (m2 ·24h·0.1MPa), tensile strength > 38MPa, so that the TPU film has good opening smoothness, high barrier property and high mechanical property, meeting market demand.

[0007] The TPU slip agent master batch of the application, on the basis of adding 40-60 parts by weight of silicon dioxide, also adds polyether modified polysiloxane and silane coupling agent at the same time. The polyether modified polysiloxane infiltrates the silicon dioxide, the silane coupling agent grafts the silicon dioxide, and through the synergistic effect between the polyether modified polysiloxane and the silane coupling agent, the dual effect of physical wrapping and chemical anchoring is realized, achieving the balance of steric hindrance and interfacial chemical bonding. Not only is the uniform dispersion of high content of silicon dioxide realized, but also through the groups on the surface of the polyether modified polysiloxane and the silane coupling agent, the interaction between them and the TPU resin is enhanced through covalent bond, hydrogen bond and other intermolecular forces, the network structure is improved, the crosslinking density is increased, the structural defects are reduced, the use effect of the TPU slip agent master batch is improved, the opening smoothness, barrier property and mechanical property of the TPU film are synergistically improved, and the TPU film has better comprehensive performance.

[0008] Optionally, the polyether modified polysiloxane is selected from one or more of polyether modified polysiloxane BYK-333, polyether modified polysiloxane BYK-348, polyether modified polysiloxane TEGO Glide 410, and polyether modified polysiloxane TEGO Glide 450.

[0009] By optimizing the selection of the polyether modified polysiloxane, the selection of the polyether modified polysiloxane is facilitated.

[0010] Optionally, the silane coupling agent is selected from one or more of 3-aminopropyl triethoxysilane, 3-(2,3-epoxypropoxy) propyl trimethoxysilane, and 3-(methacryloyloxy) propyl trimethoxysilane.

[0011] Optionally, the silane coupling agent is selected from 3-aminopropyl triethoxysilane and 3-(2,3-epoxypropoxy) propyl trimethoxysilane, and the weight ratio of 3-aminopropyl triethoxysilane to 3-(2,3-epoxypropoxy) propyl trimethoxysilane is (1-3):(1-3).

[0012] By adopting the above technical solution, the silane coupling agent is optimized, facilitating its selection. Furthermore, the synergistic effect of 3-aminopropyltriethoxysilane and 3-(2,3-epoxypropoxy)propyltrimethoxysilane is utilized to enhance the effectiveness of the silane coupling agent, resulting in superior overall performance of the TPU film. In several embodiments, the weight ratio of 3-aminopropyltriethoxysilane to 3-(2,3-epoxypropoxy)propyltrimethoxysilane is 1:1. However, the weight ratio can also be set to 1:2, 1:3, 2:1, 2:3, 3:1, 3:2, etc., as needed, but is not limited to the listed values; other unlisted values ​​within this range are also applicable.

[0013] Optionally, the silica is precipitated silica with a particle size of 2-10 μm.

[0014] By adopting the above technical solution, the particle size of silica is optimized, ensuring a stable silica source and guaranteeing that silica can form effective micro-protrusions in the TPU film, thus acting as an opening. In several embodiments, the silica particle size is 5μm, but it can also be set to 2μm, 3μm, 4μm, 6μm, 7μm, 8μm, 9μm, 10μm, etc., as needed, but is not limited to the listed values; other unlisted values ​​within this range are also applicable.

[0015] Optionally, the TPU resin has a melt index of 30-100 g / 10 min at 190°C and 2.16 kg load.

[0016] By adopting the above technical solution, the melt index of TPU resin is optimized, ensuring the stability of the TPU resin source and making it suitable for processing various types of TPU films, thus expanding its application range. In several embodiments, the melt index of TPU resin at 190℃ and 2.16kg load is 60g / 10min. It can also be set to 30g / 10min, 40g / 10min, 50g / 10min, 70g / 10min, 80g / 10min, 90g / 10min, 100g / 10min, etc., as needed, but is not limited to the listed values; other unlisted values ​​within this range are also applicable.

[0017] Optionally, the dispersant is selected from one or more of polyethylene wax, polypropylene wax, polyethylene glycol, and ethylene bis-stearamide.

[0018] By adopting the above technical solution, the dispersant is optimized, making its selection easier. The dispersant can increase the dispersion uniformity of raw materials, especially the uniformity of silica, reduce agglomeration, and improve the effectiveness of silica.

[0019] Optionally, the dispersant is selected from polyethylene wax, and the number average molecular weight of the polyethylene wax is 2000-5000.

[0020] In several embodiments, the number average molecular weight of the polyethylene wax is 3000. It can also be set to 2000, 2500, 3500, 4000, 4500, 5000, etc. as needed, but is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0021] Optionally, the lubricant is selected from one or more of oleamide, erucamide, stearamide, and polydimethylsiloxane.

[0022] By adopting the above technical solutions, the lubricant is optimized, making lubricant selection easier. The lubricant not only improves flowability during processing, facilitating the processing of TPU lubricant masterbatch, but also enhances the opening slip properties of the TPU film, thereby increasing the overall performance of the TPU film.

[0023] Optionally, the antioxidant is selected from one or more of antioxidant 1076, antioxidant 1035, antioxidant 1010, and antioxidant 168.

[0024] By adopting the above technical solutions, antioxidants are optimized, facilitating their selection. Antioxidants can increase oxidation resistance during processing and use, extending service life.

[0025] Optionally, the antioxidant is selected from antioxidant 1010 and antioxidant 168, and the weight ratio of antioxidant 1010 and antioxidant 168 is (1-3):(1-3).

[0026] In several implementations, the weight ratio of antioxidant 1010 and antioxidant 168 is 2:1. However, the weight ratio can also be set to 1:1, 1:2, 1:3, 2:3, 3:1, 3:2, etc., as needed, but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0027] Secondly, this application provides a method for preparing the TPU lubricant masterbatch, which adopts the following technical solution: A method for preparing the TPU lubricant masterbatch includes the following steps: S1. At a temperature of 75-85℃, mix silica and polyether-modified polysiloxane, add silane coupling agent, stir for 20-40 minutes, cool to room temperature, and obtain premix. S2. Mix TPU resin, premix, dispersant, lubricant, and antioxidant to obtain a mixture; S3. Melt and extrude the mixture, cool it, and granulate it to obtain TPU lubricant masterbatch.

[0028] By employing the above technical solution, polyether-modified polysiloxane is first impregnated with silica, and then a silane coupling agent is added to carry out a grafting reaction, achieving a dual effect of physical encapsulation and chemical bonding anchoring to obtain a premix. The premix is ​​then mixed with other raw materials to obtain TPU lubricant masterbatch, ensuring the quality and performance of the TPU lubricant masterbatch.

[0029] In several implementations, the temperature of step S1 is 80°C. It can also be set to 75°C, 77°C, 82°C, 85°C, etc. as needed, but is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0030] Optionally, the melt extrusion temperature is 180-200℃.

[0031] In several implementations, the melt extrusion temperature is 190°C, but it can also be set to 180°C, 185°C, 195°C, 200°C, etc. as needed, but is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0032] In summary, this application has at least the following beneficial effects: 1. The TPU lubricant masterbatch of this application has a high silica content of 40-60 parts by weight. While maintaining the TPU film's good coefficient of friction, barrier properties, and tensile strength, it reduces the amount of TPU lubricant masterbatch added to the TPU film. It is suitable for TPU film processing and has broad application prospects.

[0033] 2. The TPU lubricant masterbatch of this application simultaneously adds polyether-modified polysiloxane and silane coupling agent to the raw materials. Through the synergistic effect between them, it achieves a dual effect of physical encapsulation and chemical bonding anchoring of silica, reaching a balance between steric hindrance and interfacial chemical bonding. This not only increases the uniformity of dispersion but also enhances the interaction between it and TPU resin, improves the network structure, increases the crosslinking density, and reduces structural defects, thereby achieving a synergistic improvement in the opening slip properties, barrier properties, and mechanical properties of the TPU film. Furthermore, it makes the TPU film have a dynamic friction coefficient <0.2, hydrostatic pressure resistance >73kPa, and oxygen permeability <600cm³. 3 / (m 2 It has the advantages of good opening smoothness, high barrier properties and high mechanical properties, and has a tensile strength of >38MPa (24h·0.1MPa) to meet market demand. Detailed Implementation

[0034] The present application will be further described in detail below with reference to the embodiments. Example

[0035] Table 1 Raw material usage of TPU lubricant masterbatch (unit: kg) Examples Example 1 Example 2 Example 3 TPU resin 40 30 50 Silica 50 40 60 Polyether-modified polysiloxane 2 3 1 Silane coupling agent 3 2 4 Dispersant 2 1 3 Lubricant 4 5 3 Antioxidant 0.4 0.5 0.3 Example 1 A TPU lubricant masterbatch, the raw materials and their proportions are shown in Table 1.

[0036] The TPU resin has a melt index of 60 g / 10 min at 190℃ and 2.16 kg load; the silica is precipitated silica with a particle size of 5 μm; the polyether-modified polysiloxane is selected from polyether-modified polysiloxane BYK-333; the silane coupling agent is selected from 3-(methacryloyloxy)propyltrimethoxysilane; the dispersant is selected from polyethylene wax with a number average molecular weight of 3000; the lubricant is selected from erucamide; and the antioxidants are selected from antioxidant 1010 and antioxidant 168, with a weight ratio of antioxidant 1010 to antioxidant 168 of 2:1.

[0037] A method for preparing TPU lubricant masterbatch includes the following steps: S1. At a temperature of 80℃, polyether-modified polysiloxane is added to silica and stirred for 10 min. Then, silane coupling agent is added and stirred for 30 min. The temperature is then lowered to 23℃ to obtain a premix.

[0038] S2. Add premix, dispersant, lubricant and antioxidant to TPU resin, stir for 5 minutes to obtain mixture.

[0039] S3. Using a twin-screw extruder, the mixture is melted, extruded, cooled, and granulated to obtain TPU lubricant masterbatch.

[0040] The melt extrusion temperature is 190℃, and the screw speed of the twin-screw extruder is 300rpm.

[0041] Example 2 A TPU lubricant masterbatch differs from Example 1 in that the raw material ratio of the TPU lubricant masterbatch is different, and the raw material ratio of the TPU lubricant masterbatch is shown in Table 1.

[0042] Example 3 A TPU lubricant masterbatch differs from Example 1 in that the raw material ratio of the TPU lubricant masterbatch is different, and the raw material ratio of the TPU lubricant masterbatch is shown in Table 1.

[0043] Example 4 A TPU lubricant masterbatch differs from Example 1 in that the silane coupling agent in the raw materials of the TPU lubricant masterbatch is different; the silane coupling agent is selected from 3-aminopropyltriethoxysilane.

[0044] Example 5 A TPU lubricant masterbatch differs from Example 1 in that the silane coupling agent in the raw materials of the TPU lubricant masterbatch is different, and the silane coupling agent is selected from 3-(2,3-epoxypropoxy)propyltrimethoxysilane.

[0045] Example 6 A TPU lubricant masterbatch differs from Example 1 in that the silane coupling agent in the raw materials of the TPU lubricant masterbatch is different. The silane coupling agent is selected from 3-aminopropyltriethoxysilane and 3-(2,3-epoxypropoxy)propyltrimethoxysilane, and the weight ratio of 3-aminopropyltriethoxysilane and 3-(2,3-epoxypropoxy)propyltrimethoxysilane is 1:1.

[0046] Comparative Example Comparative Example 1 A TPU lubricant masterbatch differs from Example 1 in that the raw materials and their proportions are different. The TPU lubricant masterbatch is made from the following raw materials: 40 kg of TPU resin, 10 kg of silica, 2 kg of dispersant, 4 kg of lubricant, and 0.4 kg of antioxidant.

[0047] The TPU resin has a melt index of 60 g / 10 min at 190℃ and 2.16 kg load; the silica is precipitated silica with a particle size of 5 μm; the dispersant is polyethylene wax with a number average molecular weight of 3000; the lubricant is erucamide; and the antioxidants are antioxidant 1010 and antioxidant 168, with a weight ratio of 2:1.

[0048] A method for preparing TPU lubricant masterbatch includes the following steps: S1. Add silica, dispersant, lubricant and antioxidant to TPU resin, stir for 5 minutes to obtain a mixture.

[0049] S2. Using a twin-screw extruder, the mixture is melted, extruded, cooled, and granulated to obtain TPU lubricant masterbatch.

[0050] The melt extrusion temperature is 190℃, and the screw speed of the twin-screw extruder is 300rpm.

[0051] Comparative Example 2 A TPU lubricant masterbatch differs from Example 1 in that the raw materials and their proportions are different. The TPU lubricant masterbatch is made from the following raw materials: 40 kg of TPU resin, 50 kg of silica, 2 kg of dispersant, 4 kg of lubricant, and 0.4 kg of antioxidant.

[0052] The TPU resin has a melt index of 60 g / 10 min at 190℃ and 2.16 kg load; the silica is precipitated silica with a particle size of 5 μm; the dispersant is polyethylene wax with a number average molecular weight of 3000; the lubricant is erucamide; and the antioxidants are antioxidant 1010 and antioxidant 168, with a weight ratio of 2:1.

[0053] A method for preparing TPU lubricant masterbatch includes the following steps: S1. Add silica, dispersant, lubricant and antioxidant to TPU resin, stir for 5 minutes to obtain a mixture.

[0054] S2. Using a twin-screw extruder, the mixture is melted, extruded, cooled, and granulated to obtain TPU lubricant masterbatch.

[0055] The melt extrusion temperature is 190℃, and the screw speed of the twin-screw extruder is 300rpm.

[0056] Comparative Example 3 A TPU lubricant masterbatch differs from Example 1 in that an equal amount of silane coupling agent is used to replace the polyether-modified polysiloxane in the raw materials of the TPU lubricant masterbatch.

[0057] Comparative Example 4 A TPU lubricant masterbatch differs from Example 1 in that an equal amount of polyether-modified polysiloxane is used to replace the silane coupling agent in the raw materials of the TPU lubricant masterbatch.

[0058] Comparative Example 5 A TPU lubricant masterbatch differs from Example 1 in that an equal amount of polyethylene glycol monomethyl ether replaces polyether-modified polysiloxane in the raw materials of the TPU lubricant masterbatch, and the number average molecular weight of polyethylene glycol monomethyl ether is 1000.

[0059] Comparative Example 6 A TPU lubricant masterbatch differs from Example 1 in that an equal amount of glyceryl monostearate is used to replace polyether-modified polysiloxane in the raw materials of the TPU lubricant masterbatch.

[0060] Performance testing TPU lubricant masterbatches obtained in Examples 1-6 and Comparative Examples 1-6 were used as samples, and the TPU lubricant masterbatches were applied to TPU films with a thickness of 10 μm. The TPU films were made of TPU resin and TPU lubricant masterbatches, with a weight ratio of TPU resin to TPU lubricant masterbatches of 100:3, meaning the amount of TPU lubricant masterbatches added was 3 wt% of the TPU resin. The melt index of the TPU resin at 190℃ and a load of 2.16 kg was 30 g / 10 min. The following performance tests were performed on the TPU films, and the results are shown in Table 2.

[0061] Meanwhile, a control group was established, using the TPU lubricant masterbatch obtained in Comparative Example 1 as the sample. The TPU lubricant masterbatch was applied to a TPU film with a thickness of 10 μm. The TPU film was made of TPU resin and TPU lubricant masterbatch, with a weight ratio of 100:8.5, meaning the amount of TPU lubricant masterbatch added was 8.5 wt% of the TPU resin. The melt index of the TPU resin at 190℃ and a load of 2.16 kg was 30 g / 10 min. The following performance tests were performed on the TPU film, and the results are shown in Table 2.

[0062] The dynamic friction coefficient of TPU film was tested according to GB / T10006-2021 "Determination of Coefficient of Friction for Plastic Films and Sheets". The smaller the dynamic friction coefficient, the better the opening smoothness.

[0063] According to GB / T4744-2013 "Test and Evaluation of Water Repellency of Textiles - Hydrostatic Pressure Method", the hydrostatic pressure resistance of TPU film was tested. The higher the hydrostatic pressure resistance, the better the barrier properties.

[0064] GB / T1038-2000, "Test Methods for Gas Permeability of Plastic Films and Sheets - Differential Pressure Method," tests the oxygen permeability of TPU films. Lower oxygen permeability indicates better barrier properties.

[0065] The tensile strength of TPU film was tested according to GB / T1040.3-2006 "Determination of tensile properties of plastics - Part 3: Test conditions for films and sheets". Higher tensile strength indicates better mechanical properties.

[0066] Table 2 Detection Results As shown in Table 2, the TPU film obtained from the TPU lubricant masterbatch of this application has a low coefficient of dynamic friction, ranging from 0.13 to 0.18, exhibiting good opening smoothness. Furthermore, it also possesses high hydrostatic pressure resistance and low oxygen permeability, with a hydrostatic pressure resistance of 73.2-80.3 kPa and an oxygen permeability of 485-560 cm⁻¹.3 / (m 2 It exhibits high barrier properties (0.1 MPa over 24 hours). Simultaneously, it also possesses high tensile strength (38.75-43.83 MPa), demonstrating excellent mechanical properties. The TPU lubricant masterbatch of this application, with a silica content set at a high level of 40-60 parts by weight, not only reduces the amount of TPU lubricant masterbatch added to the TPU film but also improves opening slip properties, barrier properties, and mechanical properties. This results in a TPU film with advantages such as good opening slip properties, high barrier properties, and high mechanical properties, meeting market demands.

[0067] Comparative Example 1 and the control group were compared. In Comparative Example 1, the amount of TPU lubricant masterbatch added to the TPU film raw material was 3 wt% of the TPU resin; in the control group, the amount of TPU lubricant masterbatch added to the TPU film raw material was 8.5 wt% of the TPU resin. This shows that increasing the amount of TPU lubricant masterbatch in the raw material significantly increases the opening slip properties, but reduces barrier properties and mechanical properties. Furthermore, in Comparative Example 2, the amount of silica added to the TPU lubricant masterbatch raw material was 50 parts by weight. This shows that increasing the amount of silica in the TPU lubricant masterbatch, while improving the opening slip properties, is limited and significantly reduces barrier properties and mechanical properties, which is detrimental to the overall performance of the TPU film.

[0068] Comparative Examples 2-4 and Example 1 were compared. Comparative Example 3, compared to Comparative Example 2, added a silane coupling agent to the TPU lubricant masterbatch raw material; Comparative Example 4, compared to Comparative Example 2, added polyether-modified polysiloxane to the TPU lubricant masterbatch raw material; Example 1, compared to Comparative Example 2, added both polyether-modified polysiloxane and a silane coupling agent to the TPU lubricant masterbatch raw material. This demonstrates that simultaneously adding polyether-modified polysiloxane and a silane coupling agent to the raw material, and utilizing their synergistic effect, can significantly improve opening slip properties, barrier properties, and mechanical properties.

[0069] Comparative Examples 5-6 and Example 1 were compared. In Comparative Example 5, polyethylene glycol monomethyl ether was added to the TPU lubricant masterbatch raw material; in Comparative Example 6, glyceryl monostearate was added to the TPU lubricant masterbatch raw material; and in Example 1, polyether-modified polysiloxane was added to the TPU lubricant masterbatch raw material. It can be seen that replacing the polyether-modified polysiloxane with polyethylene glycol monomethyl ether or with glyceryl monostearate is detrimental to the TPU film, and only by adding polyether-modified polysiloxane to the raw material can the desired effect be achieved.

[0070] Comparing Examples 1 and 4-5, in Example 1, the silane coupling agent for the TPU lubricant masterbatch raw material was selected from 3-(methacryloyloxy)propyltrimethoxysilane; in Example 4, the silane coupling agent for the TPU lubricant masterbatch raw material was selected from 3-aminopropyltriethoxysilane; and in Example 5, the silane coupling agent for the TPU lubricant masterbatch raw material was selected from 3-(2,3-epoxypropoxy)propyltrimethoxysilane. This shows that different silane coupling agents achieve different effects in the TPU lubricant masterbatch. Furthermore, in Example 6, the silane coupling agent for the TPU lubricant masterbatch raw material was selected from 3-aminopropyltriethoxysilane and 3-(2,3-epoxypropoxy)propyltrimethoxysilane. It can be seen that when the silane coupling agent is selected from 3-aminopropyltriethoxysilane and 3-(2,3-epoxypropoxy)propyltrimethoxysilane, the synergistic effect between them can form a denser cross-linked network, increase the integrity of the cross-linked network, improve the opening slip, barrier properties and mechanical properties of TPU film, and make TPU film exhibit better overall performance.

[0071] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A TPU slip agent masterbatch characterized by: It is mainly made of the following raw materials by weight: TPU resin 30-50 parts, silica 40-60 parts, polyether modified polysiloxane 1-3 parts, silane coupling agent 2-4 parts, dispersant 1-3 parts, lubricant 3-5 parts, antioxidant 0.3-0.5 parts.

2. The TPU slip agent masterbatch according to claim 1, characterized in that: The polyether modified polysiloxane is selected from one or more of polyether modified polysiloxane BYK-333, polyether modified polysiloxane BYK-348, polyether modified polysiloxane TEGO Glide 410, polyether modified polysiloxane TEGO Glide 450.

3. The TPU slip agent masterbatch according to claim 1, characterized in that: The silane coupling agent is selected from one or more of 3-aminopropyl triethoxysilane, 3-(2,3-epoxypropoxy) propyl trimethoxysilane, 3-(methacryloyloxy) propyl trimethoxysilane.

4. The TPU slip agent masterbatch of claim 1, wherein: The silane coupling agent is selected from two of 3-aminopropyl triethoxysilane, 3-(2,3-epoxypropoxy) propyl trimethoxysilane, and the weight ratio of 3-aminopropyl triethoxysilane, 3-(2,3-epoxypropoxy) propyl trimethoxysilane is (1-3):(1-3).

5. The TPU slip agent masterbatch of claim 1, wherein: The silica is precipitated silica, and the particle size of the silica is 2-10 μm.

6. The TPU slip agent masterbatch of claim 1, wherein: The TPU resin has a melt index of 30-100 g / 10 min at 190°C under a load of 2.16 kg.

7. The TPU slip agent masterbatch of claim 1, wherein: The dispersant is selected from one or more of polyethylene wax, polypropylene wax, polyethylene glycol, and ethylene bis-stearamide.

8. The TPU slip agent masterbatch of claim 1, wherein: The lubricant is selected from one or more of oleic acid amide, erucic acid amide, stearic acid amide, and polydimethylsiloxane.

9. The TPU slip agent masterbatch of claim 1, wherein: The antioxidant is selected from one or more of antioxidant 1076, antioxidant 1035, antioxidant 1010, and antioxidant 168.

10. A process for the preparation of a TPU slip agent masterbatch according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: S1, at a temperature of 75-85°C, mix the silica and the polyether modified polysiloxane, add the silane coupling agent, stir for 20-40 min, and cool to room temperature to obtain a premix; S2, mix the TPU resin, the premix, the dispersant, the lubricant, and the antioxidant to obtain a mixture; S3, melt extrude the mixture, cool, and granulate to obtain a TPU slip master batch.

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