Self-lubricating TPV (thermoplastic vulcanizate) material as well as preparation method and application thereof

Abstract

The invention discloses a self-lubricating TPV (thermoplastic vulcanizate) material as well as a preparation method and application thereof, and belongs to the technical field of thermoplastic elastomer materials. The self-lubricating TPV material comprises the following raw materials in parts by weight: 40-50 parts of polypropylene particles, 20-30 parts of ethylene propylene diene monomer, 0.5-2 parts of silicone and 0.1-2.0 parts of silicone oil. The silicone oil comprises one or more of polydimethylsiloxane, polydiethylsiloxane, polymethylphenyl siloxane, methyl hydrogen silicone oil and phenyl silicone oil; the silicone comprises one or more of a PE carrier and a PP carrier; the self-lubricating low-friction-coefficient TPV material provided by the invention can be adjusted to have different hardness and touch according to customer requirements, has good mechanical properties, processability, high and low temperature resistance, environmental change resistance, self-lubricating low-friction easy-assembly properties and the like, and can be used for sealing strip connecting corners in automobile parts and injection molding quarter window materials.

Description

Technical Field

[0001] The invention belongs to the technical field of thermoplastic elastomer materials, and in particular relates to a self-lubricating TPV material, a preparation method and application thereof. Background Art

[0002] The automotive glass run channel sealing strip seals and guides the window glass, making it noiseless when the window glass is raised or lowered, and is waterproof, dustproof, and soundproof. It is one of the most important functional parts in the car. The automotive glass run channel sealing strip cannot be bent, so a material is needed to act as a bonding agent so that the sealing strip can be turned; the window corners are repeatedly assembled many times, and good self-lubricating properties are a prerequisite for ensuring the effective assembly of the functional key sealing strip. Therefore, exploring materials with low friction coefficients that can self-lubricate is a very valuable research. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention proposes a self-lubricating TPV material, a preparation method and applications thereof.

[0004] A self-lubricating TPV material comprises the following raw materials in parts by weight: 30-50 parts of polypropylene particles, 20-30 parts of EPDM rubber, 0.5-2 parts of silicone and 0.5-2 parts of silicone oil;

[0005] The silicone oil includes one or more of polydimethylsiloxane, polydiethylsiloxane, polymethylphenylsiloxane, methyl hydrogen silicone oil and phenyl silicone oil; the silicone includes one or more of PE carrier and PP carrier.

[0006] Preferably, the polypropylene particles include one or more of PP 8003, PP 5290, PP 5090T, PP BX3900 and PP1100N.

[0007] Preferably, the EPDM rubber includes one or more of EPDM 756, EPDM 657, EPDM 3080P, EPDM 3092 and EPDM 3112.

[0008] Preferably, 20-30 parts by weight of a plasticizer is further included; the plasticizer includes one or more of paraffin oil, cycloalkane oil, aromatic hydrocarbon oil and straight-chain alkane oil.

[0009] Preferably, 4 parts by weight of a filler is also included; the filler includes one or more of talc, calcium carbonate, glass microspheres, glass fiber and montmorillonite.

[0010] Preferably, 0.6 parts by weight of BPIC-C75 is also included.

[0011] Preferably, 0.3 parts by weight of TMPTA is also included.

[0012] A self-lubricating TPV material comprises the following steps:

[0013] 0.5-2 parts by weight of silicone oil and 20-30 parts by weight of plasticizer are mixed and stirred to obtain premix A; 20-30 parts by weight of EPDM rubber, 30-50 parts by weight of polypropylene, 4 parts by weight of filler and 0.5-2 parts by weight of silicone are mixed and stirred to obtain premix B;

[0014] Premix A is added to premix B, and the mixture is melted, extruded and granulated to obtain intermediate C;

[0015] The intermediate C, 0.6 parts by weight of BPIC-C75, 0.3 parts by weight of TMPTA and the premix A are mixed, and the mixture is melted, extruded and pelletized to obtain a self-lubricating TPV material.

[0016] Application of the self-lubricating TPV material or the self-lubricating TPV material prepared by the preparation method in the production of guide channel sealing strips for vehicle windows.

[0017] The technical effects of the present invention include:

[0018] The self-lubricating low friction coefficient TPV material prepared by the present invention is mainly made of polypropylene and EPDM rubber, and auxiliary agents such as silicone oil and silicone are added. Through reasonable proportioning and processing technology, the mixture system has excellent wear resistance and self-lubricating performance. In addition to excellent weather resistance and a wide range of applications, it also has the characteristics of a fine matte surface.

[0019] The present invention utilizes polypropylene, EPDM rubber, silicone oil, silicone, plasticizer, and filler to prepare the self-lubricating low friction coefficient TPV material according to certain proportions and technical conditions. The hardness and touch can be adjusted to different levels according to customer needs, and the material has good mechanical properties, processing properties, and resistance to high and low temperatures and environmental changes. The material can be used for rear triangular windows and glass guide groove joints in automotive parts.

[0020] At the same time, the present invention optimizes the production steps through reasonable production process design, and completes the production of ultra-low friction coefficient materials in two steps. The production process is simple, stable, easy to control, environmentally friendly, and has low equipment requirements, which is beneficial to large-scale industrial production. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention are described clearly and completely. 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.

[0022] Example 1

[0023]

[0024] The specific implementation process includes the following steps:

[0025] (1) 1 part of silicone oil (polymethylsiloxane) and 20 parts of plasticizer are sequentially put into a stirring barrel and stirred at a speed of 100-500 r / min for 10-30 minutes to obtain a premix A; 30 parts of EPDM rubber, 35 parts of polypropylene, 4 parts of filler, and 0.5 parts of silicone (propylene carrier) are put into a high-speed stirrer together and stirred at a speed of 100-500 r / min for 5-10 minutes to obtain a premix B;

[0026] (2) adding premix B to an extruder, controlling the processing temperature of the plasticizing melting zone and the melt conveying zone, continuously and quantitatively adding premix A to the first section of the solid conveying zone of the extruder by using a metering pump, adding 20-40 wt% of a plasticizer to the front section of the extruder by using a metering pump, and performing vacuum treatment at the rear section of the extruder by using a vacuum pump. The premix is ​​melted, extruded, and granulated in the extruder to obtain an intermediate C;

[0027] (3) The intermediate C is added to the extruder, and the processing temperature of the plasticizing melting zone and the melt conveying zone is controlled. The intermediate C, the cross-linking agent BPIC-C75 (0.6 parts), the auxiliary cross-linking agent TMPTA (0.3 parts) and the remaining plasticizer A are continuously and quantitatively added in the first section of the solid conveying zone of the extruder by using a metering pump, and a vacuum pump is used to evacuate the tail end of the extruder. After melting, extrusion and granulation in the extruder, a self-lubricating low friction coefficient TPV material is obtained.

[0028] The preparation method is characterized in that: the extruders in steps (2) and (3) are both co-rotating twin-screw extruders, the feed speed is 60-300 r / min, the screw speed is 200-500 r / min, and the screw aspect ratio is 52-64;

[0029] In the steps (2) and (3), the temperature of the first section of the solid conveying zone of the extruder does not exceed 120°C, and the temperature of the remaining sections is 150-240°C.

[0030] Example 2

[0031]

[0032]

[0033] The specific implementation process includes the following steps:

[0034] (1) 2 parts of silicone oil (polymethylphenylsiloxane) and 30 parts of plasticizer are sequentially put into a stirring barrel and stirred at a speed of 100-500 r / min for 10-30 minutes to obtain a premix A; 30 parts of EPDM rubber, 45 parts of polypropylene, 4 parts of filler, and 2 parts of silicone (propylene carrier) are put into a high-speed stirrer together and stirred at a speed of 100-500 r / min for 5-10 minutes to obtain a premix B;

[0035] (2) adding premix B to an extruder, controlling the processing temperature of the plasticizing melting zone and the melt conveying zone, continuously and quantitatively adding premix A to the first section of the solid conveying zone of the extruder by using a metering pump, adding 20-40 wt% of a plasticizer to the front section of the extruder by using a metering pump, and performing vacuum treatment at the rear section of the extruder by using a vacuum pump. The premix is ​​melted, extruded, and granulated in the extruder to obtain an intermediate C;

[0036] (3) The intermediate C is added to the extruder, and the processing temperature of the plasticizing melting zone and the melt conveying zone is controlled. The intermediate C, 0.6 parts of the cross-linking agent (BPIC-C75), the auxiliary cross-linking agent TMPTA (0.3 parts) and the remaining plasticizer A are continuously and quantitatively added to the first section of the solid conveying zone of the extruder by using a metering pump, and a vacuum pump is used to evacuate the tail end of the extruder. After melting, extrusion and granulation in the extruder, a self-lubricating low friction coefficient TPV material is obtained.

[0037] The preparation method is characterized in that: the extruders in steps (2) and (3) are both co-rotating twin-screw extruders, the feed speed is 60-300 r / min, the screw speed is 200-500 r / min, and the screw aspect ratio is 52-64;

[0038] In the steps (2) and (3), the temperature of the first section of the solid conveying zone of the extruder does not exceed 120°C, and the temperature of the remaining sections is 150-240°C.

[0039] Example 3

[0040]

[0041]

[0042] The specific implementation process includes the following steps:

[0043] (1) 1.5 parts of silicone oil (polymethylsiloxane) and 30 parts of plasticizer are sequentially put into a stirring barrel and stirred at a speed of 100-500 r / min for 10-30 minutes to obtain a premix A; 20 parts of EPDM rubber, 45 parts of polypropylene, 4 parts of filler, and 2 parts of silicone (hexene carrier) are put into a high-speed stirrer together and stirred at a speed of 100-500 r / min for 5-10 minutes to obtain a premix B;

[0044] (2) adding premix B to an extruder, controlling the processing temperature of the plasticizing melting zone and the melt conveying zone, continuously and quantitatively adding premix A to the first section of the solid conveying zone of the extruder by using a metering pump, adding 20-40 wt% of a plasticizer to the front section of the extruder by using a metering pump, and performing vacuum treatment at the rear section of the extruder by using a vacuum pump. The premix is ​​melted, extruded, and granulated in the extruder to obtain an intermediate C;

[0045] (3) The intermediate C is added into the extruder, and the processing temperature of the plasticizing melting zone and the melt conveying zone is controlled. The intermediate C, 0.6 parts of the cross-linking agent (BPIC-C75), 0.3 parts of the auxiliary cross-linking agent (TMPTA) and the remaining plasticizer A are added continuously and quantitatively in the first section of the solid conveying zone of the extruder by using a metering pump. A vacuum pump is used to evacuate the tail end of the extruder. After melting, extrusion and granulation in the extruder, a self-lubricating low friction coefficient TPV material is obtained.

[0046] The preparation method is characterized in that: the extruders in steps (2) and (3) are both co-rotating twin-screw extruders, the feed speed is 60-300 r / min, the screw speed is 200-500 r / min, and the screw aspect ratio is 52-64;

[0047] In the steps (2) and (3), the temperature of the first section of the solid conveying zone of the extruder does not exceed 120°C, and the temperature of the remaining sections is 150-240°C.

[0048] Example 4

[0049]

[0050] The specific implementation process includes the following steps:

[0051] (1) 2 parts of silicone oil (polymethylphenylsiloxane) and 30 parts of plasticizer are sequentially put into a stirring barrel and stirred at a speed of 100-500 r / min for 10-30 minutes to obtain a premix A; 30 parts of EPDM rubber, 45 parts of polypropylene, 4 parts of filler, and 2 parts of silicone (propylene carrier) are put into a high-speed stirrer together and stirred at a speed of 100-500 r / min for 5-10 minutes to obtain a premix B;

[0052] (2) adding premix B to an extruder, controlling the processing temperature of the plasticizing melting zone and the melt conveying zone, continuously and quantitatively adding premix A to the first section of the solid conveying zone of the extruder by using a metering pump, adding 20-40 wt% of a plasticizer to the front section of the extruder by using a metering pump, and performing vacuum treatment at the rear section of the extruder by using a vacuum pump. The premix is ​​melted, extruded, and granulated in the extruder to obtain an intermediate C;

[0053] (3) The intermediate C is added to the extruder, and the processing temperature of the plasticizing melting zone and the melt conveying zone is controlled. The intermediate C, 0.6 parts of the cross-linking agent (BPIC-C75), the auxiliary cross-linking agent TMPTA (0.3 parts) and the remaining plasticizer A are continuously and quantitatively added to the first section of the solid conveying zone of the extruder by using a metering pump, and a vacuum pump is used to evacuate the tail end of the extruder. After melting, extrusion and granulation in the extruder, a self-lubricating low friction coefficient TPV material is obtained.

[0054] The preparation method is characterized in that: the extruders in steps (2) and (3) are both co-rotating twin-screw extruders, the feed speed is 60-300 r / min, the screw speed is 200-500 r / min, and the screw aspect ratio is 52-64;

[0055] In the steps (2) and (3), the temperature of the first section of the solid conveying zone of the extruder does not exceed 120°C, and the temperature of the remaining sections is 150-240°C.

[0056] Comparative Example 1:

[0057]

[0058] The specific implementation process includes the following steps:

[0059] (1) 35 parts of EPDM rubber, 35 parts of polypropylene, and 4 parts of filler are stirred at a speed of 100-500 r / min for 5-10 minutes to obtain a premix A;

[0060] (2) adding premix A to an extruder, controlling the processing temperature of the plasticizing melting zone and the melt conveying zone, continuously and quantitatively adding premix A to the first section of the solid conveying zone of the extruder by using a metering pump, adding 20 parts of a plasticizer at 100% by using a metering pump to the front section of the extruder, and performing vacuum treatment at the rear section of the extruder by using a vacuum pump. The premix is ​​melted, extruded, and granulated in the extruder to obtain an intermediate B;

[0061] (3) The intermediate B is added to the extruder, and the processing temperature of the plasticizing melting zone and the melt conveying zone is controlled. The intermediate B, 0.6 parts of the cross-linking agent (BPIC-C75), and 0.3 parts of the auxiliary cross-linking agent (TMPTA) are quantitatively added to the first section of the solid conveying zone of the extruder using a metering pump, and a vacuum pump is used to evacuate the tail end of the extruder. After melting, extrusion, and granulation in the extruder, the TPV material is obtained.

[0062] The preparation method is characterized in that: the extruders in steps (2) and (3) are both co-rotating twin-screw extruders, the feed speed is 60-300 r / min, the screw speed is 200-500 r / min, and the screw aspect ratio is 52-64;

[0063] In the steps (2) and (3), the temperature of the first section of the solid conveying zone of the extruder does not exceed 120°C, and the temperature of the remaining sections is 150-240°C.

[0064] Comparative Example 2:

[0065]

[0066] The specific implementation process includes the following steps:

[0067] (1) 30 parts of EPDM rubber, 45 parts of polypropylene, 4 parts of filler, and 1 part of silicone (propylene carrier) were put into a high-speed mixer and stirred at a speed of 100-500 r / min for 5-10 minutes to obtain a premix A;

[0068] (2) adding premix A to an extruder, controlling the processing temperature of the plasticizing melting zone and the melt conveying zone, continuously and quantitatively adding premix A to the first section of the solid conveying zone of the extruder by using a metering pump, adding 20 parts of a plasticizer at 100% by using a metering pump to the front section of the extruder, and performing vacuum treatment at the rear section of the extruder by using a vacuum pump. The premix is ​​melted, extruded, and granulated in the extruder to obtain an intermediate B;

[0069] (3) The intermediate B is added to the extruder, and the processing temperature of the plasticizing melting zone and the melt conveying zone is controlled. The intermediate B, 0.6 parts of the cross-linking agent (BPIC-C75), and 0.3 parts of the auxiliary cross-linking agent (TMPTA) are quantitatively added to the first section of the solid conveying zone of the extruder by using a metering pump. A vacuum pump is used to evacuate the tail end of the extruder. After melting, extrusion, and granulation in the extruder, a self-lubricating low friction coefficient TPV material is obtained.

[0070] The preparation method is characterized in that: the extruders in steps (2) and (3) are both co-rotating twin-screw extruders, the feed speed is 60-300 r / min, the screw speed is 200-500 r / min, and the screw aspect ratio is 52-64;

[0071] In the steps (2) and (3), the temperature of the first section of the solid conveying zone of the extruder does not exceed 120°C, and the temperature of the remaining sections is 150-240°C.

[0072] Comparative Example 3

[0073]

[0074] The specific implementation process includes the following steps:

[0075] (1) 1.5 parts of silicone oil (polymethylphenylsiloxane) and 30 parts of plasticizer are sequentially put into a stirring barrel and stirred at a speed of 100-500 r / min for 10-30 minutes to obtain a premix A; 20 parts of EPDM rubber, 45 parts of polypropylene, and 4 parts of filler are put into a high-speed stirrer together and stirred at a speed of 100-500 r / min for 5-10 minutes to obtain a premix B;

[0076] (2) adding premix B to an extruder, controlling the processing temperature of the plasticizing melting zone and the melt conveying zone, continuously and quantitatively adding premix A to the first section of the solid conveying zone of the extruder by using a metering pump, adding 20-40 wt% of a plasticizer to the front section of the extruder by using a metering pump, and performing vacuum treatment at the rear section of the extruder by using a vacuum pump. The premix is ​​melted, extruded, and granulated in the extruder to obtain an intermediate C;

[0077] (3) The intermediate C is added to the extruder, and the processing temperature of the plasticizing melting zone and the melt conveying zone is controlled. The intermediate C, 0.6 parts of the cross-linking agent (BPIC-C75), the auxiliary cross-linking agent TMPTA (0.3 parts) and the remaining premix A are continuously and quantitatively added to the first section of the solid conveying zone of the extruder by using a metering pump. A vacuum pump is used to evacuate the tail end of the extruder. After melting, extrusion and granulation in the extruder, a self-lubricating low friction coefficient TPV material is obtained.

[0078] The preparation method is characterized in that: the extruders in steps (2) and (3) are both co-rotating twin-screw extruders, the feed speed is 60-300 r / min, the screw speed is 200-500 r / min, and the screw aspect ratio is 52-64;

[0079] In the steps (2) and (3), the temperature of the first section of the solid conveying zone of the extruder does not exceed 120°C, and the temperature of the remaining sections is 150-240°C.

[0080] Comparative Example 4

[0081]

[0082]

[0083] The specific implementation process includes the following steps:

[0084] (1) 1.5 parts of silicone oil (polymethylphenylsiloxane) and 30 parts of plasticizer are sequentially put into a stirring barrel and stirred at a speed of 100-500 r / min for 10-30 minutes to obtain a premix A; 20 parts of EPDM rubber, 45 parts of polypropylene, and 4 parts of filler are put into a high-speed stirrer together and stirred at a speed of 100-500 r / min for 5-10 minutes to obtain a premix B;

[0085] (2) adding premix B to an extruder, controlling the processing temperature of the plasticizing melting zone and the melt conveying zone, continuously and quantitatively adding premix A to the first section of the solid conveying zone of the extruder by using a metering pump, adding 20-40 wt% of a plasticizer to the front section of the extruder by using a metering pump, and performing vacuum treatment at the rear section of the extruder by using a vacuum pump. The premix is ​​melted, extruded, and granulated in the extruder to obtain an intermediate C;

[0086] (3) The intermediate C is added to the extruder, and the processing temperature of the plasticizing melting zone and the melt conveying zone is controlled. The intermediate C, 0.6 parts of the cross-linking agent (BPIC-C75), the auxiliary cross-linking agent TMPTA (0.3 parts) and the remaining premix A are continuously and quantitatively added to the first section of the solid conveying zone of the extruder by using a metering pump. A vacuum pump is used to evacuate the tail end of the extruder. After melting, extrusion and granulation in the extruder, a self-lubricating low friction coefficient TPV material is obtained.

[0087] The preparation method is characterized in that: the extruders in steps (2) and (3) are both co-rotating twin-screw extruders, the feed speed is 60-300 r / min, the screw speed is 200-500 r / min, and the screw aspect ratio is 52-64;

[0088] In the steps (2) and (3), the temperature of the first section of the solid conveying zone of the extruder does not exceed 120°C, and the temperature of the remaining sections is 150-240°C.

[0089] Test results

[0090] Test method: Hardness, measured according to ISO 7619-1, type A;

[0091] Tensile strength: the test standard is ISO 37-1, and the tensile test rate is 500 mm / min;

[0092] Tear strength, test standard is ISO 34-1, method B, use uncut rectangular specimen, test rate is 500mm / min;

[0093] Melt flow rate, test standard is ISO 1133-1, method A, 230℃, 5kg;

[0094] Hot air aging is carried out according to the method specified in GB / T 3512. The sample is placed in a constant heat aging box at a specified temperature of (130±2)℃ for 168h. The sample is taken out and stored in a standard environment for at least 16h before the tensile strength is measured and the change rate of tensile strength is calculated:

[0095]

[0096] Low temperature resistance: according to the requirements of GB / T 1682-2014 Method B, the sample is placed in a low temperature test chamber at -40℃ for 24h, and the appearance changes are observed after the test.

[0097] The scratch resistance was tested by a 100-grid cross scratch test according to the method specified in GB / T 9286, and ΔE was measured using a colorimeter before and after the test.

[0098] The wear test is carried out according to the method specified in GB / T 9867-2008 to test the volume wear and wear index.

[0099] The coefficient of static and dynamic friction is tested after 5000 cycles in accordance with the requirements of DIN EN ISO 105-X12.

[0100] Compression set, according to GB / T 7759.1-2015, using B-type specimens, compression rate 25%, conditions 70℃, 22h test

[0101] Test Results

[0102]

[0103]

[0104] Compared with Example 1 and Comparative Example 1, under the same main materials and processing conditions, the friction coefficient of silicone and silicone oil added is significantly lower, the scratch resistance is better, and the comprehensive mechanical properties are excellent;

[0105] Compared with Comparative Example 2, Example 2 adds silicone but does not add silicone oil. Under the same processing conditions, although the mechanical properties are similar, the scratch resistance and friction coefficient are significantly worse;

[0106] Compared with Comparative Example 3, Example 3 does not add silicone, but adds silicone oil. Under the same processing conditions, although the mechanical properties are similar, the scratch resistance and friction coefficient are significantly worse;

[0107] In summary; when preparing TPV materials, choose the appropriate process to add silicone oil and silicone. After dynamic vulcanization and cross-linking, due to the characteristics of silicone integrated into other materials, TPV materials with good feel, good lubricity, good wear resistance and excellent performance can be prepared.

[0108] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0109] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A self-lubricating TPV material, characterized in that: The method comprises the following raw materials in parts by weight: 30-50 parts of polypropylene particles, 20-30 parts of EPDM rubber, 0.5-2 parts of silicone and 0.5-2 parts of silicone oil; The silicone oil includes one or more of polydimethylsiloxane, polydiethylsiloxane, polymethylphenylsiloxane, methyl hydrogen silicone oil and phenyl silicone oil; the silicone includes one or more of PE carrier and PP carrier.

2. The self-lubricating TPV material according to claim 1, characterized in that: The polypropylene particles include one or more of PP 8003, PP 5290, PP 5090T, PP BX3900 and PP 1100N.

3. The self-lubricating TPV material according to claim 1, characterized in that: The EPDM rubber includes one or more of EPDM756, EPDM 657, EPDM 3080P, EPDM 3092 and EPDM 3112.

4. The self-lubricating TPV material according to claim 1, characterized in that: The invention also comprises 20-30 parts by weight of a plasticizer; the plasticizer comprises one or more of paraffin oil, cycloalkane oil, aromatic hydrocarbon oil and straight-chain alkane oil.

5. The self-lubricating TPV material according to claim 1, characterized in that: The invention also includes 4 parts by weight of a filler; the filler includes one or more of talc, calcium carbonate, glass microspheres, glass fiber and montmorillonite.

6. The self-lubricating TPV material according to claim 1, characterized in that: 0.6 parts by weight of BPIC-C75 was also included.

7. The self-lubricating TPV material according to claim 1, characterized in that: 0.3 parts by weight of TMPTA was also included.

8. A self-lubricating TPV material, characterized in that: The steps include: 0.5-2 parts by weight of silicone oil and 20-30 parts by weight of plasticizer are mixed and stirred to obtain premix A; 20-30 parts by weight of EPDM rubber, 30-50 parts by weight of polypropylene, 4 parts by weight of filler and 0.5-2 parts by weight of silicone are mixed and stirred to obtain premix B; Premix A is added to premix B, and the mixture is melted, extruded and granulated to obtain intermediate C; The intermediate C, 0.6 parts by weight of BPIC-C75, 0.3 parts by weight of TMPTA and the premix A are mixed, and the mixture is melted, extruded and pelletized to obtain a self-lubricating TPV material.

9. Use of the self-lubricating TPV material according to any one of claims 1 to 7 or the self-lubricating TPV material prepared by the preparation method according to claim 8 in the production of guide channel sealing strips for vehicle windows.

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