CN112662164A - Wear-resistant polyurethane material for tires and preparation method thereof - Google Patents
Wear-resistant polyurethane material for tires and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a wear-resistant polyurethane material for tires and a preparation method thereof. The silicone rubber is used for carrying out composite modification on the thermoplastic polyurethane to obtain the silicone rubber thermoplastic polyurethane composite material, so that the strength and the wear resistance of the silicone rubber thermoplastic polyurethane composite material are enhanced. The compatibility of the silicone rubber and the thermoplastic polyurethane is poor, the self-made solubilizer is added to improve the mechanical property of the silicone rubber thermoplastic polyurethane composite material, the terpene resin is introduced into the silicone rubber, the damping property of the silicone rubber is increased, so that the polymer can convert vibration mechanical energy into heat energy, the vibration strength of the tire can be reduced, and the stability of the tire is improved. The invention prepares the wear-resistant polyurethane material for the tire by improving the components of the tire.
Description
Technical Field
The invention relates to the technical field of tire materials, in particular to a wear-resistant polyurethane material for a tire and a preparation method thereof.
Background
Rubber has been the preferred material for tire manufacturing for a long time, and has been used in tires for 100 years, and the rubber has exposed many advantages and disadvantages of poor durability, low tear strength and easy abrasion during long-term use. The molecular structure of the polyurethane elastomer enables the polyurethane elastomer to be a high molecular synthetic material with the performance between that of common rubber and plastic, the high elasticity of the rubber, the high hardness and the high strength of the plastic, the wear resistance of the polyurethane elastomer is stronger than that of the rubber, and the polyurethane elastomer has good mechanical performance strength, oil resistance, chemical resistance, flexibility resistance and excellent low temperature resistance. Based on these basic properties, applications in polyurethane elastomer tires have become widespread.
Although the wear resistance of polyurethane elastomer is higher than that of rubber, the high temperature resistance of polyurethane is poor, so that the polyurethane material still has research and development spaces in the aspect of wear resistance. Therefore, it is necessary to design an abrasion-resistant polyurethane material for a tire which increases abrasion resistance of the tire.
Disclosure of Invention
The invention aims to provide an abrasion-resistant polyurethane material for a tire, which solves the problems in the background technology.
In order to solve the technical problems, the first aspect of the invention provides the following technical scheme of a wear-resistant polyurethane material for a tire, which comprises the following raw materials in parts by weight:
80-100 parts of thermoplastic polyurethane, 160-200 parts of silicone rubber thermoplastic polyurethane composite material, 80-100 parts of resin silicone rubber composite material, 50-60 parts of methyl vinyl silicone rubber, 30-40 parts of terpene resin and 20-30 parts of self-made compatibilizer.
Preferably, the resin silicone rubber composite material is prepared by mixing and vulcanizing terpene resin and methyl vinyl silicone rubber.
Preferably, the self-made compatibilizer is a silicone-acrylic graft copolymer, silicone oil with methyl end caps is arranged at two ends of the silicone oil, and butyl acrylate and butyl methacrylate are grafted on the silicone oil.
Preferably, the silicone rubber thermoplastic polyurethane composite material is prepared by carrying out composite modification on thermoplastic polyurethane by using silicone rubber.
According to the technical scheme, the thermoplastic polyurethane is subjected to composite modification by using the silicone rubber, and the high-temperature stability of the silicone rubber is utilized, so that the modified thermoplastic polyurethane reduces the storage modulus and the stiffness of the polyurethane at low temperature, can still keep flexibility, resilience and surface hardness at high temperature, but still has the strength of the thermoplastic polyurethane at normal temperature, the defect that the strength of the silicone rubber is only half of that of natural rubber at normal temperature is overcome, and the wear resistance of the tire is improved.
In the technical scheme, the compatibility of the silicone rubber and the thermoplastic polyurethane is poor, and the compatibilizer is added when a multiphase polymer is formed, so that the interface viscosity of the blend is improved, the interface slippage is reduced, the size of a disperse phase of a melt of the blend can be refined by modifying the interface of two phases, the mechanical property of the silicone rubber thermoplastic polyurethane composite material is improved, and the wear resistance of the tire is further enhanced.
In the technical scheme, the used methyl vinyl silicone rubber is introduced into terpene resin. The methyl vinyl silicone rubber added with the terpene resin increases the damping property, so that the polymer can convert the vibration mechanical energy into heat energy, can reduce the vibration strength of the tire and increases the stability of the tire.
The invention provides a preparation method of a wear-resistant polyurethane material for a tire, which comprises the following steps:
(1) mixing raw methyl vinyl silicone rubber, terpene resin, filler, vulcanizing agent and other compounding agents uniformly in an open rubber mixing mill, then thinly passing through the mixing mill for 8-10 times, rolling for 5 times, then taking out the sheet, standing at room temperature for 24 hours, turning over and mixing once, and vulcanizing and molding on a flat vulcanizing machine for vulcanizing time determined by a vulcanizing instrument. After first-stage vulcanization, performing second-stage vulcanization in a blast oven to obtain a composite material A;
(2) preparing a compatibilizer:
(a) adding deionized water into DBSA at room temperature, stirring for dissolving, adding D4 and KH-570, stirring, heating to 85 ℃, adding hexamethyldisiloxane while stirring, and cooling to room temperature after the reaction is finished to obtain a solution A;
(b) and adjusting the pH value of the solution A to 9, introducing nitrogen for 0.5-1 h, dropwise adding a mixed solution of EGDMA, BA and TDM, adding an initiator buffer solution in a matching manner, reacting for 6h, dropwise adding MMA, adding the initiator buffer solution in a matching manner, and reacting for 6h to obtain the self-made compatibilizer.
(3) Putting thermoplastic polyurethane into a forced air drying oven for drying at 90 ℃ for 3 hours, and blending the thermoplastic polyurethane and the composite material A on an internal mixer at 175 ℃, at the rotating speed of 60r/min for 10 minutes to obtain rubber compound A;
(4) blending thermoplastic polyurethane and the composite material A on a double-roller open mill for 15min at 175 ℃ to obtain rubber compound B;
(5) placing the mixed rubber A and the mixed rubber B on an open mill for plasticizing and flowing to obtain a molten composite material B;
(6) and extruding the molten composite material B by an extruder, adding the extruded molten composite material B into a tire building machine, and forming the tire to obtain a finished product.
Preferably, in the step (1): the mass ratio of the raw rubber of the methyl vinyl silicone rubber, the terpene resin and the filler is 3: 2: 5.
preferably, in the step (2) (b): the pH was adjusted by swelling with 3% sodium hydroxide solution for 0.5h before adding the initiator buffer solution twice.
Preferably, in the step (3) (4): the molar mass ratio of the thermoplastic polyurethane to the composite material A in the rubber compound A and the rubber compound B is respectively 2: 1 and 3: 1.
preferably, in the step (5): and during plasticizing and flowing, cutting the composite material A into small particles, gradually adding the small particles into an open mill for milling and blending, cutting for multiple times in the milling process, and adding the compatibilizer for multiple times at proper time to obtain a molten composite material B.
Preferably, in the step (6), the following steps are carried out: and after the tire is formed, cooling to room temperature, inflating the tire mold in an inflation and pressurization mode, performing mold-entering demolding, and preparing a finished tire.
Compared with the prior art, the invention has the following beneficial effects:
in order to improve the performances of the thermoplastic polyurethane, such as ultraviolet resistance, heat resistance, wear resistance, aging resistance, compatibility with an organic body and the like, the thermoplastic polyurethane is compositely modified by using silicon rubber. By utilizing the high-temperature stability of the silicon rubber, the modified thermoplastic polyurethane reduces the storage modulus and the stiffness of the polyurethane at low temperature, can still keep the flexibility, the rebound resilience and the surface hardness under the high-temperature condition, but still has the strength of the thermoplastic polyurethane at normal temperature, changes the defect that the strength of the silicon rubber is only half of that of natural rubber at normal temperature, and increases the wear resistance of the tire.
Silicone rubber has poor compatibility with thermoplastic polyurethanes and compatibilizers are added when forming multiphase polymers. If two polymers are directly blended, the obtained blended material is not good in general performance, and the performance of most high polymer blends is reduced due to the poor compatibility, high surface tension between two phases and low interface bonding force. When the compatibilizer at the interface of two phases can be entangled with molecules of two phases in the blend, the interface viscosity of the blend is improved, the interface slippage is reduced, the size of a dispersed phase of a melt of the blend can be refined by modifying the interface of the two phases, the mechanical property of the silicone rubber thermoplastic polyurethane composite material is improved, and the wear resistance of the tire is further enhanced.
The methyl vinyl silicone rubber used incorporates a terpene resin. The damping property is increased by the methyl vinyl silicone rubber added with the terpene resin, intermolecular attraction exists in the damping material, and when the material is acted by external force, the intermolecular attraction can block the movement of molecular chains, so that the phenomenon that strain lags behind stress is generated, the polymer can convert vibration mechanical energy into heat energy, the vibration strength of the tire can be reduced, and the stability of the tire is increased.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The wear-resistant polyurethane material for the tire comprises the following raw materials in parts by weight:
80-100 parts of thermoplastic polyurethane, 160-200 parts of silicone rubber thermoplastic polyurethane composite material, 80-100 parts of resin silicone rubber composite material, 50-60 parts of methyl vinyl silicone rubber, 30-40 parts of terpene resin and 20-30 parts of self-made compatibilizer.
Preferably, the resin silicone rubber composite material is prepared by mixing and vulcanizing terpene resin and methyl vinyl silicone rubber.
Preferably, the self-made compatibilizer is a silicone-acrylic graft copolymer, silicone oil with methyl end caps is arranged at two ends of the silicone oil, and butyl acrylate and butyl methacrylate are grafted on the silicone oil.
Preferably, the silicone rubber thermoplastic polyurethane composite material is prepared by carrying out composite modification on thermoplastic polyurethane by using silicone rubber.
According to the technical scheme, the thermoplastic polyurethane is subjected to composite modification by using the silicone rubber, and the high-temperature stability of the silicone rubber is utilized, so that the modified thermoplastic polyurethane reduces the storage modulus and the stiffness of the polyurethane at low temperature, can still keep flexibility, resilience and surface hardness at high temperature, but still has the strength of the thermoplastic polyurethane at normal temperature, the defect that the strength of the silicone rubber is only half of that of natural rubber at normal temperature is overcome, and the wear resistance of the tire is improved.
In the technical scheme, the compatibility of the silicone rubber and the thermoplastic polyurethane is poor, and the compatibilizer is added when a multiphase polymer is formed, so that the interface viscosity of the blend is improved, the interface slippage is reduced, the size of a disperse phase of a melt of the blend can be refined by modifying the interface of two phases, the mechanical property of the silicone rubber thermoplastic polyurethane composite material is improved, and the wear resistance of the tire is further enhanced.
In the technical scheme, the used methyl vinyl silicone rubber is introduced into terpene resin. The methyl vinyl silicone rubber added with the terpene resin increases the damping property, so that the polymer can convert the vibration mechanical energy into heat energy, can reduce the vibration strength of the tire and increases the stability of the tire.
The invention provides a preparation method of a wear-resistant polyurethane material for a tire, which comprises the following steps:
(1) mixing raw methyl vinyl silicone rubber, terpene resin, filler, vulcanizing agent and other compounding agents uniformly in an open rubber mixing mill, then thinly passing through the mixing mill for 8-10 times, rolling for 5 times, then taking out the sheet, standing at room temperature for 24 hours, turning over and mixing once, and vulcanizing and molding on a flat vulcanizing machine for vulcanizing time determined by a vulcanizing instrument. After first-stage vulcanization, performing second-stage vulcanization in a blast oven to obtain a composite material A;
(2) preparing a compatibilizer:
(a) adding deionized water into DBSA at room temperature, stirring for dissolving, adding D4 and KH-570, stirring, heating to 85 ℃, adding hexamethyldisiloxane while stirring, and cooling to room temperature after the reaction is finished to obtain a solution A;
(b) and adjusting the pH value of the solution A to 9, introducing nitrogen for 0.5-1 h, dropwise adding a mixed solution of EGDMA, BA and TDM, adding an initiator buffer solution in a matching manner, reacting for 6h, dropwise adding MMA, adding the initiator buffer solution in a matching manner, and reacting for 6h to obtain the self-made compatibilizer.
(3) Putting thermoplastic polyurethane into a forced air drying oven for drying at 90 ℃ for 3 hours, and blending the thermoplastic polyurethane and the composite material A on an internal mixer at 175 ℃, at the rotating speed of 60r/min for 10 minutes to obtain rubber compound A;
(4) blending thermoplastic polyurethane and the composite material A on a double-roller open mill for 15min at 175 ℃ to obtain rubber compound B;
(5) placing the mixed rubber A and the mixed rubber B on an open mill for plasticizing and flowing to obtain a molten composite material B;
(6) and extruding the molten composite material B by an extruder, adding the extruded molten composite material B into a tire building machine, and forming the tire to obtain a finished product.
Preferably, in the step (1): the mass ratio of the raw rubber of the methyl vinyl silicone rubber, the terpene resin and the filler is 3: 2: 5.
preferably, in the step (2) (b): the pH was adjusted by swelling with 3% sodium hydroxide solution for 0.5h before adding the initiator buffer solution twice.
Preferably, in the step (3) (4): the molar mass ratio of the thermoplastic polyurethane to the composite material A in the rubber compound A and the rubber compound B is respectively 2: 1 and 3: 1.
preferably, in the step (5): and during plasticizing and flowing, cutting the composite material A into small particles, gradually adding the small particles into an open mill for milling and blending, cutting for multiple times in the milling process, and adding the compatibilizer for multiple times at proper time to obtain a molten composite material B.
Preferably, in the step (6), the following steps are carried out: and after the tire is formed, cooling to room temperature, inflating the tire mold in an inflation and pressurization mode, performing mold-entering demolding, and preparing a finished tire.
Example 1: wear-resistant polyurethane material for tires one:
the wear-resistant polyurethane material for the tire comprises the following components in parts by weight:
80 parts of thermoplastic polyurethane, 160 parts of a silicone rubber thermoplastic polyurethane composite material, 80 parts of a terpene resin and methyl vinyl silicone rubber composite material, 50 parts of methyl vinyl silicone rubber, 30 parts of terpene resin and 20 parts of a self-made compatibilizer.
The weight ratio of the raw methyl vinyl silicone rubber, the terpene resin and the filler substance is 3: 2: 5.
the mole mass ratio of the thermoplastic polyurethane to the composite material A in the rubber compound A and the rubber compound B is respectively 2: 1 and 3: 1.
the preparation method of the tire comprises the following steps:
(1) mixing 50 parts by weight of raw methyl vinyl silicone rubber, 30 parts by weight of terpene resin, filler, vulcanizing agent and other compounding agents uniformly in an open rubber mixing mill, then thinly passing for 8-10 times, rolling for 5 times, then discharging sheets, standing for 24 hours at room temperature, turning over and mixing once, and vulcanizing and molding on a flat vulcanizing machine for vulcanization time determined by a vulcanizing instrument. After first-stage vulcanization, performing second-stage vulcanization in a blast oven to obtain a composite material A;
(2) preparing a compatibilizer:
(a) adding deionized water into DBSA at room temperature, stirring for dissolving, adding D4 and KH-570, stirring, heating to 85 ℃, adding hexamethyldisiloxane while stirring, and cooling to room temperature after the reaction is finished to obtain a solution A;
(b) adjusting the pH value of the solution A to 9, introducing nitrogen for 0.5-1 h, dropwise adding a mixed solution of EGDMA, BA and TDM, swelling for 0.5h, cooperatively adding an initiator buffer solution, reacting for 6h, dropwise adding MMA, swelling for 0.5h, cooperatively adding an initiator buffer solution, and reacting for 6h to obtain the self-made compatibilizer.
(3) Putting thermoplastic polyurethane into a forced air drying oven for drying at 90 ℃ for 3 hours, and blending the thermoplastic polyurethane and the composite material A on an internal mixer at 175 ℃, at the rotating speed of 60r/min for 10 minutes to obtain rubber compound A;
(4) blending thermoplastic polyurethane and the composite material A on a double-roller open mill for 15min at 175 ℃ to obtain rubber compound B;
(5) placing the rubber compound A and the rubber compound B on an open mill for plasticizing and flowing, shearing the composite material A into small particles, gradually adding the small particles into the open mill for open blending, cutting for multiple times in the open process, and timely adding the compatibilizer for multiple times to obtain a molten composite material B;
(6) and extruding the molten composite material B by an extruder, adding the extruded molten composite material B into a labyrinth, forming the tire, cooling to room temperature, inflating the tire into a tire mold in an inflation and pressurization mode, and demolding to obtain a finished product.
Example 2: wear-resistant polyurethane material II for tires:
the wear-resistant polyurethane material for the tire comprises the following components in parts by weight:
100 parts of thermoplastic polyurethane, 200 parts of silicone rubber thermoplastic polyurethane composite material, 100 parts of resin silicone rubber composite material, 60 parts of methyl vinyl silicone rubber, 40 parts of terpene resin and 30 parts of self-made compatibilizer.
The preparation method of the tire comprises the following steps:
the weight ratio of the raw methyl vinyl silicone rubber, the terpene resin and the filler substance is 3: 2: 5.
the mole mass ratio of the thermoplastic polyurethane to the composite material A in the rubber compound A and the rubber compound B is respectively 2: 1 and 3: 1.
the preparation method of the tire comprises the following steps:
(1) mixing 100 parts by weight of raw methyl vinyl silicone rubber, 40 parts by weight of terpene resin, filler, vulcanizing agent and other compounding agents uniformly in an open rubber mixing mill, then thinly passing through the mixing mill for 8-10 times, rolling for 5 times, discharging sheets, standing for 24 hours at room temperature, turning over and mixing once, and vulcanizing and molding on a flat vulcanizing machine for vulcanization time determined by a vulcanizing instrument. After first-stage vulcanization, performing second-stage vulcanization in a blast oven to obtain a composite material A;
(2) preparing a compatibilizer:
(a) adding deionized water into DBSA at room temperature, stirring for dissolving, adding D4 and KH-570, stirring, heating to 85 ℃, adding hexamethyldisiloxane while stirring, and cooling to room temperature after the reaction is finished to obtain a solution A;
(b) adjusting the pH value of the solution A to 9, introducing nitrogen for 0.5-1 h, dropwise adding a mixed solution of EGDMA, BA and TDM, swelling for 0.5h, cooperatively adding an initiator buffer solution, reacting for 6h, dropwise adding MMA, swelling for 0.5h, cooperatively adding an initiator buffer solution, and reacting for 6h to obtain the self-made compatibilizer.
(3) Putting thermoplastic polyurethane into a forced air drying oven for drying at 90 ℃ for 3 hours, and blending the thermoplastic polyurethane and the composite material A on an internal mixer at 175 ℃, at the rotating speed of 60r/min for 10 minutes to obtain rubber compound A;
(4) blending thermoplastic polyurethane and the composite material A on a double-roller open mill for 15min at 175 ℃ to obtain rubber compound B;
(5) placing the rubber compound A and the rubber compound B on an open mill for plasticizing and flowing, shearing the composite material A into small particles, gradually adding the small particles into the open mill for open blending, cutting for multiple times in the open process, and timely adding the compatibilizer for multiple times to obtain a molten composite material B;
(6) and extruding the molten composite material B by an extruder, adding the extruded molten composite material B into a labyrinth, forming the tire, cooling to room temperature, inflating the tire into a tire mold in an inflation and pressurization mode, and demolding to obtain a finished product.
Comparative example 1, preparation of a conventional thermoplastic polyurethane tire:
(1) injection molding: adding 200 parts by weight of molten thermoplastic polyurethane into an extruder, extruding and adding into a tire building machine through the extruder, molding the tire,
(2) demolding treatment: and (3) cooling to room temperature, then carrying out demoulding treatment on the tire, and inflating the tire mold in an inflation and pressurization mode to separate the tire from the mold to prepare the finished tire.
Comparative example 2, tire preparation without solubilizer addition:
the formulation of the tires was the same as in example 1 without the addition of solubilizer. The process for the preparation of this tire differs from that of example 1 only in that no self-made compatibilizer is added to the molten composite B prepared in step (5), and the remaining preparation steps are the same as those of example 1.
Comparative example 3, tire preparation without terpene resin:
the formula of the natural plant ferment enzyme sunscreen cream prepared by using nano zinc oxide and used for improving the cell activity is the same as that of the example 1. The preparation method of the sunscreen cream is different from that of the example 1 only in that the preparation of the step (1) is not carried out, the tire preparation is directly carried out by using the methyl vinyl silicone rubber as a raw material, and the rest of the preparation steps are the same as the example 1.
Test example 1, the abrasion resistance of the abrasion resistant polyurethane material for a tire of the present invention is compared with that of a general thermoplastic polyurethane tire:
1. test method
The abrasion-resistant polyurethane material for a tire prepared in example 1 and the ordinary thermoplastic polyurethane tire prepared in comparative example 1 were subjected to an arcone abrasion test, rotational friction was performed on a grinding wheel, and the quality before and after the test was compared with that before and after the test.
2. Test results
The tire quality values before and after the test of example 1 and comparative example 1 are shown in table 1.
Table 1 change in the quality of tire before and after test of example 1 and comparative example 1
Through the comparison of the wear resistance, it can be obviously seen from the table that the mass change before and after rotating for a certain number of turns is obviously smaller than that before and after the wear-resistant polyurethane material for the tire disclosed by the invention, and the common thermoplastic polyurethane tire indicates that the wear-resistant polyurethane material for the tire disclosed by the invention has excellent wear resistance.
Test example 2 abrasion resistant polyurethane material for tires according to the invention with tires without solubilizer addition, without terpene resin:
1. test method
The abrasion-resistant polyurethane material for tire prepared in example 1 was subjected to the stability and abrasion resistance base item test with the tire prepared in comparative example 2 without adding solubilizer and the tire prepared in comparative example 3 without using terpene resin
2. Test results
See table 2 for a comparison of the basic properties of example 1 with comparative examples 2, 3.
Table 2 comparison of basic properties of example 1 with comparative examples 2 and 3
Compared with the basic performances of the wear resistance, the wear-resistant polyurethane material for the tire has better wear resistance and stability than the tire without the solubilizer and the tire without the terpene resin. The wear-resistant polyurethane material for the tire has better wear resistance and stability.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The wear-resistant polyurethane material for the tire is characterized by comprising the following raw materials in parts by weight: 80-100 parts of thermoplastic polyurethane, 160-200 parts of silicone rubber thermoplastic polyurethane composite material, 80-100 parts of resin rubber composite material, 50-60 parts of methyl vinyl silicone rubber, 30-40 parts of terpene resin and 20-30 parts of self-made compatibilizer.
2. A wear-resistant polyurethane material for tires according to claim 1, characterized in that: the resin silicone rubber composite material is prepared by mixing and vulcanizing terpene resin and methyl vinyl silicone rubber.
3. A wear-resistant polyurethane material for tires according to claim 1, characterized in that: the self-made compatibilizer is a silicone-acrylic graft copolymer, silicone oil with methyl end caps is arranged at two ends of the self-made compatibilizer, and butyl acrylate and butyl methacrylate are grafted on the silicone oil.
4. A wear-resistant polyurethane material for tires according to claim 1, characterized in that: the silicone rubber thermoplastic polyurethane composite material is prepared by carrying out composite modification on thermoplastic polyurethane by using silicone rubber.
5. The preparation method of the wear-resistant polyurethane material for the tire is characterized by comprising the following specific steps of:
(1) mixing raw methyl vinyl silicone rubber, terpene resin, filler, vulcanizing agent and other compounding agents uniformly in an open rubber mixing mill, then thinly passing through the mixing mill for 8-10 times, rolling for 5 times, then taking out the sheet, standing at room temperature for 24 hours, turning over and mixing once, and vulcanizing and molding on a flat vulcanizing machine for vulcanizing time determined by a vulcanizing instrument. After first-stage vulcanization, performing second-stage vulcanization in a blast oven to obtain a composite material A;
(2) preparing a compatibilizer:
(a) adding deionized water into DBSA at room temperature, stirring for dissolving, adding D4 and KH-570, stirring, heating to 85 ℃, adding hexamethyldisiloxane while stirring, and cooling to room temperature after the reaction is finished to obtain a solution A;
(b) and adjusting the pH value of the solution A to 9, introducing nitrogen for 0.5-1 h, dropwise adding a mixed solution of EGDMA, BA and TDM, adding an initiator buffer solution in a matched manner, reacting for 6h, dropwise adding MMA, adding the initiator buffer solution in a matched manner, and reacting for 6h to obtain the self-made compatibilizer.
(3) Putting thermoplastic polyurethane into a forced air drying oven for drying at 90 ℃ for 3 hours, and blending the thermoplastic polyurethane and the composite material A on an internal mixer at 175 ℃, at the rotating speed of 60r/min for 10 minutes to obtain rubber compound A;
(4) blending thermoplastic polyurethane and the composite material A on a double-roller open mill for 15min at 175 ℃ to obtain rubber compound B;
(5) placing the mixed rubber A and the mixed rubber B on an open mill for plasticizing and flowing to obtain a molten composite material B;
(6) and extruding the molten composite material B by an extruder, adding the extruded molten composite material B into a tire building machine, and forming the tire to obtain a finished product.
6. The process for preparing an abrasion-resistant polyurethane material for tires according to claim 5, wherein in the above step (1): the weight ratio of the raw methyl vinyl silicone rubber, the terpene resin and the filler substance is 3: 2: 5.
7. the process for producing an abrasion-resistant polyurethane material for tire according to claim 5, wherein in the above step (2) (b): the pH was adjusted by swelling with 3% sodium hydroxide solution for 0.5h before adding the initiator buffer solution twice.
8. The process for preparing an abrasion-resistant polyurethane material for tires according to claim 5, wherein in the above step (3) (4): the molar mass ratio of the thermoplastic polyurethane to the composite material A in the rubber compound A and the rubber compound B is respectively 2: 1 and 3: 1.
9. the method for preparing an abrasion-resistant polyurethane material for a tire as claimed in claim 5, wherein the step (5) is: and during plasticizing and flowing, cutting the composite material A into small particles, gradually adding the small particles into an open mill for milling and blending, cutting for multiple times in the milling process, and timely adding the compatibilizer for multiple times to obtain a molten composite material B.
10. The method for preparing an abrasion-resistant polyurethane material for tires according to claim 5, wherein in the step (6) above: and after the tire is formed, cooling to room temperature, inflating the tire mold in an inflation pressurization mode, performing mold-entering demolding, and preparing a finished tire.
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