Tread rubber with high cutting resistance and high wear resistance, preparation method of tread rubber and application of tread rubber in aircraft tires

Abstract

The invention relates to the technical field of high polymer materials, and provides tread rubber with high cutting resistance and high wear resistance, a preparation method of the tread rubber and application of the tread rubber in aircraft tires. The tread rubber provided by the invention is prepared from the following raw materials in parts by weight: 100 parts of natural rubber, 5-15 parts of white carbon black, 1-5 parts of a coupling agent, 1-2 parts of a vulcanizing activator, 45-55 parts of carbon black, 1-3 parts of aromatic oil, 3-6 parts of zinc oxide, 1-3 parts of stearic acid, 2-5 parts of an anti-aging agent, 3-6 parts of a rubber modifier, 1-2 parts of insoluble sulfur, 1-2 parts of an accelerant, 0.5-1 part of an anti-reversion agent and 0-0.5 part of a scorch retarder. By introducing the rubber modifier and reasonable formula design, the cutting resistance, wear resistance and mechanical properties of the tread rubber are improved on the basis of not increasing the use amount of the reinforcing filler, the use requirements of aircraft tires can be well met, and the service life of the aircraft tires is effectively prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high polymer materials, in particular to a high-cutting-resistance and high-wear-resistance tread rubber, a preparation method thereof and application thereof in aviation tires. BACKGROUND

[0002] Aviation tires are directly related to the take-off and landing safety of an airplane. Aviation tires will face complex working conditions such as high speed, high load and large impact during use. Extreme working conditions will cause serious friction and wear of the tread of the aviation tire. Meanwhile, the tread of the tire is prone to being cut to form a herringbone cut when sliding on an airport runway with a relatively sharp drainage groove, which brings severe challenges to the use safety of the aviation tire. Therefore, the tread rubber of the aviation tire needs to have good cutting resistance and wear resistance under the premise of maintaining normal mechanical strength.

[0003] At present, the cutting resistance and wear resistance of the tread rubber of the aviation tire are mainly improved by increasing reinforcing fillers, and the commonly used reinforcing fillers include carbon black, white carbon black and the like. However, too much carbon black introduced into the tread rubber will cause carbon black agglomeration to form carbon black clusters, weaken the bonding force inside the rubber, reduce the strength and hardness of the rubber, and accelerate the wear of the rubber. The strong polarity of white carbon black will cause poor compatibility of the white carbon black with hydrocarbon rubber molecules, and the white carbon black is not easy to disperse in the rubber compound. Although the dispersibility of the white carbon black can be improved by adding a silane coupling agent, excessive silane coupling agent will reduce the tear strength and wet skid resistance of the rubber, and finally cause serious negative effects on the physical and mechanical properties of the tread rubber.

[0004] In summary, how to improve the cutting resistance and wear resistance of the tread rubber of the aviation tire without increasing the amount of reinforcing fillers is a problem to be solved in the field. SUMMARY

[0005] Therefore, the present application provides a high-cutting-resistance and high-wear-resistance tread rubber, a preparation method thereof and application thereof in aviation tires. The tread rubber provided by the present application has outstanding cutting resistance and wear resistance, excellent mechanical properties, and does not need to increase the amount of reinforcing fillers, can meet the use requirements of the aviation tire, and effectively improves the service life of the aviation tire.

[0006] In order to achieve the above-mentioned application purposes, the present application provides the following technical solutions: A high-cutting-resistance and high-wear-resistance tread rubber comprises the following raw materials by weight: 100 parts of natural rubber, 5-15 parts of white carbon black, 1-5 parts of a coupling agent, 1-2 parts of a vulcanization activator, 45-55 parts of carbon black, 1-3 parts of aromatic oil, 3-6 parts of zinc oxide, 1-3 parts of stearic acid, 2-5 parts of an antioxidant, 3-6 parts of a rubber modifier, 1-2 parts of insoluble sulfur, 1-2 parts of an accelerator, 0.5-1 part of an anti-reversion agent, and 0-0.5 part of a scorch retarder.

[0007] Preferably, the natural rubber is domestic natural rubber; the rubber modifier is RB-200.

[0008] Preferably, the coupling agent is Si-69; the vulcanization activator is ZNZB746; the carbon black is N339 carbon black; the antioxidant is one or more of p-phenylenediamine antioxidants and ketone amine antioxidants; the accelerator is a sulfenamide accelerator; the anti-reversion agent is PK900; the scorch retarder is CTP.

[0009] The application also provides a preparation method of the high-cutting-resistance and high-wear-resistance tread rubber as described in the above scheme, comprising the following steps: one-stage mixing of natural rubber, white carbon black, a vulcanization activator, N339 carbon black, a coupling agent, and aromatic oil to obtain one-stage mixed rubber; two-stage mixing of the one-stage mixed rubber, zinc oxide, stearic acid, an antioxidant, and a rubber modifier to obtain two-stage mixed rubber; three-stage mixing of the two-stage mixed rubber, insoluble sulfur, an accelerator, an anti-reversion agent, and a scorch retarder to obtain the final mixed rubber of the high-cutting-resistance and high-wear-resistance tread rubber.

[0010] Preferably, the one-stage mixing comprises: mixing natural rubber and white carbon black in an internal mixer, increasing the mixing temperature from 80-85℃ to 90-95℃, then adding a vulcanization activator for continuous mixing, increasing the mixing temperature from 90-95℃ to 100-105℃, then adding carbon black and a coupling agent for continuous mixing, increasing the mixing temperature from 100-105℃ to 120-125℃, then adding aromatic oil for continuous mixing, discharging the mixture from the internal mixer after the mixing temperature is increased to 140-145℃, and sequentially performing sheeting, cooling, and storage to obtain the one-stage mixed rubber.

[0011] Preferably, the two-stage mixing comprises: mixing the one-stage mixed rubber, zinc oxide, stearic acid, an antioxidant, and a rubber modifier in an internal mixer, increasing the mixing temperature from 80-85℃ to 120-125℃, and sequentially performing sheeting, cooling, and storage to obtain the two-stage mixed rubber.

[0012] Preferably, the three-stage mixing comprises: mixing the two-stage mixed rubber, insoluble sulfur, an accelerator, an anti-reversion agent, and a scorch retarder in an internal mixer, increasing the mixing temperature to 100-105℃, and sequentially performing sheeting, cooling, and storage to obtain the final mixed rubber of the high-cutting-resistance and high-wear-resistance tread rubber.

[0013] Preferably, after obtaining the final mixed rubber of the high-cutting-resistance and high-wear-resistance tread rubber, the method further comprises vulcanizing the final mixed rubber.

[0014] The application further provides application of the high-cutting-resistance and high-wear-resistance tread rubber or the high-cutting-resistance and high-wear-resistance tread rubber prepared by the preparation method in an aviation tire.

[0015] The application further provides an aviation tire comprising the high-cutting-resistance and high-wear-resistance tread rubber or the high-cutting-resistance and high-wear-resistance tread rubber prepared by the preparation method.

[0016] The application provides a high-cutting-resistance and high-wear-resistance tread rubber, which comprises the following raw materials in parts by weight: 100 parts of natural rubber, 5-15 parts of white carbon black, 1-5 parts of a coupling agent, 1-2 parts of a vulcanization activator, 45-55 parts of carbon black, 1-3 parts of aromatic oil, 3-6 parts of zinc oxide, 1-3 parts of stearic acid, 2-5 parts of an antioxidant, 3-6 parts of a rubber modifier, 1-2 parts of insoluble sulfur, 1-2 parts of an accelerator, 0.5-1 part of an anti-reversion agent, and 0-0.5 part of a scorch retarder.

[0017] To sum up, the application improves the cutting-resistance, wear-resistance and mechanical properties of the tread rubber by introducing the rubber modifier and reasonable formula design without increasing the amount of reinforcing fillers, which can better meet the use requirements of the aviation tire and effectively improve the service life of the aviation tire. DETAILED DESCRIPTION

[0018] The application provides a high-cutting-resistance and high-wear-resistance tread rubber, which comprises the following raw materials in parts by weight: 100 parts of natural rubber, 5-15 parts of white carbon black, 1-5 parts of a coupling agent, 1-2 parts of a vulcanization activator, 45-55 parts of carbon black, 1-3 parts of aromatic oil, 3-6 parts of zinc oxide, 1-3 parts of stearic acid, 2-5 parts of an antioxidant, 3-6 parts of a rubber modifier, 1-2 parts of insoluble sulfur, 1-2 parts of an accelerator, 0.5-1 part of an anti-reversion agent, and 0-0.5 part of a scorch retarder.

[0019] Unless otherwise specified, each component used in the present application is a commercially available product.

[0020] The preparation raw material of the high-cutting-resistance and high-wear-resistance tread rubber provided by the present application includes 100 parts of natural rubber in mass fraction; the natural rubber is preferably domestic natural rubber, and in specific embodiments of the present application, the model of the domestic natural rubber is Shuguang No. 2, and the manufacturer is Tianye Rubber Group; the natural rubber is used as the main material of the tread rubber in the present application, and has high tear resistance and good comprehensive performance, and has the characteristics of high tensile strength, high elongation at break, and excellent comprehensive performance.

[0021] The high-cutting-resistance and high-wear-resistance tread rubber provided by the present application includes 5-15 parts of white carbon black in weight fraction based on the weight fraction of the natural rubber, preferably 5-12.5 parts, and specifically 7.5 parts, 10 parts or 12.5 parts.

[0022] The high-cutting-resistance and high-wear-resistance tread rubber provided by the present application includes 1-5 parts of a coupling agent in weight fraction based on the weight fraction of the natural rubber, preferably 2-4 parts, and specifically 2.5 parts, 3 parts or 3.5 parts; the coupling agent is preferably a silane coupling agent, and specifically Si-69. The coupling agent can make the white carbon black combine well with the natural rubber, and improve the mechanical properties of the rubber.

[0023] The preparation raw material of the high-cutting-resistance and high-wear-resistance tread rubber provided by the present application includes 1-2 parts of a vulcanization activator in mass fraction based on the mass fraction of the natural rubber, preferably 1.2-1.6 parts, and specifically 1.3 parts; the vulcanization activator is preferably ZNZB746, and the main component of the vulcanization activator is zinc soap salt, which can improve the anti-reversion performance of the rubber compound. The vulcanization activator can improve the puncture resistance and process performance of the rubber compound.

[0024] The high-cutting-resistance and high-wear-resistance tread rubber provided by the present application includes 45-55 parts of carbon black in mass fraction based on the mass fraction of the natural rubber, preferably 45-50 parts, and specifically 45 parts in the embodiments. In the present application, the carbon black is preferably N339 carbon black, which has small particle size and high structure, and can improve the flex cracking resistance, tear resistance and wear resistance of the rubber compound.

[0025] The high-cutting-resistance and high-wear-resistance tread rubber provided by the present application includes 1-3 parts of aromatic oil in weight fraction based on the weight fraction of the natural rubber, preferably 2 parts; the aromatic oil functions as a plasticizer, and gives the rubber compound good process performance.

[0026] The high anti-cutting and high wear-resistant tread rubber provided by the application comprises 3-6 parts of zinc oxide, preferably 4-6 parts, and specifically 5 parts, based on the mass fraction of the natural rubber; the zinc oxide is preferably intercalated zinc oxide; in the application, the zinc oxide is used as an active agent.

[0027] The high anti-cutting and high wear-resistant tread rubber provided by the application comprises 1-3 parts of stearic acid, preferably 1.5-2.5 parts, and specifically 2 parts, 2.5 parts or 3 parts, based on the mass fraction of the natural rubber.

[0028] The high anti-cutting and high wear-resistant tread rubber provided by the application comprises 2-5 parts of an antioxidant, preferably 4.5-5 parts, and specifically 4.1 parts or 4.4 parts, based on the mass fraction of the natural rubber; in the application, the antioxidant is preferably one or more of a p-phenylenediamine antioxidant and a ketone amine antioxidant; the p-phenylenediamine antioxidant is preferably antioxidant 4020 and antioxidant H, and the ketone amine antioxidant is preferably antioxidant RD; in a specific embodiment of the application, the antioxidant is preferably a composite system of antioxidant 4020, antioxidant RD and antioxidant H; specifically, the amount of antioxidant 4020 is preferably 1.6-1.8 parts, the amount of antioxidant RD is preferably 2.3-2.5 parts, and the amount of antioxidant H is preferably 0.2 parts; the application can improve the heat resistance and ozone resistance of the tread rubber by adding the antioxidant; the p-phenylenediamine antioxidant has good protective effect on flex fatigue and heat aging, and the ketone amine antioxidant has good protective effect on heat, oxygen and harmful metals such as copper and manganese.

[0029] The high anti-cutting and high wear-resistant tread rubber provided by the application comprises 3-6 parts of a rubber modifier, preferably 4-6 parts, and specifically 4 parts, 5 parts or 6 parts, based on the mass fraction of the natural rubber; the rubber modifier is preferably RB-200, which is a polyborate-linked nanofiber; the rubber modifier is purchased from Yantai Rongsheng New Material Co., Ltd.; the rubber modifier used in the application is easy to disperse in the rubber compound, has good fluidity, can improve the processing rheological properties of the rubber compound, and can perform micro-crosslinking with the rubber and sulfur, thereby enhancing the uniformity of the vulcanization crosslinking network, strengthening the crosslinking degree of the tread rubber, and finally improving the anti-cutting and wear-resistant properties of the tread rubber.

[0030] The high anti-cutting and high wear-resistant tread rubber provided by the application comprises 1.0-2.0 parts of insoluble sulfur, preferably 1.7-1.9 parts, and specifically 1.7 parts or 1.8 parts, based on the mass fraction of the natural rubber.

[0031] The preparation raw material of the high-cutting-resistance and high-wear-resistance tread rubber provided by the application includes 1.0-2 parts of accelerator, preferably 1.0-1.4 parts, and specifically 1.1 parts or 1.2 parts, based on the mass fraction of the natural rubber. In the application, the accelerator is preferably a sulfenamide accelerator, and specifically accelerator NS. The use of the sulfenamide accelerator with aftereffect in the application can improve the heat resistance and aging resistance of the tread rubber and prolong the scorch time.

[0032] The preparation raw material of the high-cutting-resistance and high-wear-resistance tread rubber provided by the application includes 0.5-1 parts of anti-reversion agent, preferably 0.5-0.8 parts, based on the mass fraction of the natural rubber. The anti-reversion agent is anti-reversion agent PK900. The anti-reversion agent can compensate for the loss of cross-linking bonds due to reversion with heat-stable C-C cross-linking bonds, maintain the cross-linking density of the rubber compound, and improve the physical property retention rate of the rubber compound. The addition of the anti-reversion agent in the application can improve the anti-reversion performance of the rubber, so that the tread rubber is not degraded or less degraded at a high temperature during use, and the heat resistance of the tread rubber is significantly improved.

[0033] The preparation raw material of the high-cutting-resistance and high-wear-resistance tread rubber provided by the application includes 0-0.5 parts of anti-scorching agent, preferably 0-0.4 parts, and specifically 0.1 parts, 0.2 parts, 0.3 parts or 0.4 parts, based on the mass fraction of the natural rubber. In the application, the anti-scorching agent is preferably anti-scorching agent CTP. The anti-scorching agent CTP can prolong the scorch time of the mixed rubber without affecting the structure and performance of the vulcanized rubber, and improve the processing safety of the rubber compound.

[0034] The application uses natural rubber, white carbon black and carbon black as the main raw materials of the tread rubber, and adds a rubber modifier. The rubber modifier makes the rubber and sulfur micro-crosslink, enhances the uniformity of the vulcanization cross-linking network, improves the dispersion of carbon black and white carbon black, improves the reinforcing performance, and finally improves the cutting resistance and wear resistance of the tread rubber. The application improves the performance of the tread rubber by increasing the reinforcing filler in the prior art.

[0035] The application also provides a preparation method of the high-cutting-resistance and high-wear-resistance tread rubber. The natural rubber, white carbon black, vulcanization activator, carbon black, coupling agent and aromatic oil are subjected to one-stage mixing to obtain one-stage mixed rubber. The one-stage mixed rubber, zinc oxide, stearic acid, anti-aging agent and rubber modifier are subjected to two-stage mixing to obtain two-stage mixed rubber. The two-stage mixed rubber, insoluble sulfur, accelerator, anti-reversion agent and anti-scorching agent are subjected to three-stage mixing to obtain the final mixed rubber of the high-cutting-resistance and high-wear-resistance tread rubber.

[0036] The application mixes natural rubber, white carbon black, vulcanization activator, carbon black, coupling agent and aromatic oil in one stage to obtain a one-stage mixed rubber. In the application, the one-stage mixing preferably comprises: mixing natural rubber and white carbon black in an internal mixer, after the mixing temperature is raised from 80-85 DEG C to 90-95 DEG C, adding vulcanization activator and continuing mixing, after the mixing temperature is raised from 90-95 DEG C to 100-105 DEG C, adding carbon black and coupling agent and continuing mixing, after the mixing temperature is raised from 100-105 DEG C to 120-125 DEG C, adding aromatic oil and continuing mixing, after the mixing temperature is raised to 140-145 DEG C, discharging the mixture from the internal mixer and sequentially carrying out sheeting, cooling and storage (referred to as first storage) to obtain a one-stage mixed rubber; the sheeting is preferably carried out by a sheeting machine, and the subsequent description is omitted; the first storage time is preferably 8-16 h; the application is stored for a period of time after one-stage mixing, and various raw materials are self-dispersed during the storage, and rubber and carbon black form a combined rubber.

[0037] After obtaining the one-stage mixed rubber, the application carries out two-stage mixing of the one-stage mixed rubber, zinc oxide, stearic acid, antioxidant, rubber modifier to obtain a two-stage mixed rubber. In the application, the two-stage mixing preferably comprises: adding the one-stage mixed rubber, zinc oxide, stearic acid, antioxidant and rubber modifier into an internal mixer for mixing, after the mixing temperature is raised from 80-85 DEG C to 120 DEG C-125 DEG C, discharging the mixture from the internal mixer and sequentially carrying out sheeting, cooling and storage (referred to as second storage) to obtain a two-stage mixed rubber; the second storage time is preferably 8-16 h.

[0038] After obtaining the two-stage mixed rubber, the application carries out three-stage mixing of the two-stage mixed rubber, insoluble sulfur, accelerator, anti-reversion agent and scorch retarder to obtain a final mixed rubber of high cutting resistance and high wear resistance. In the application, the three-stage mixing preferably comprises: adding the two-stage mixed rubber, insoluble sulfur, accelerator, anti-reversion agent and scorch retarder into an internal mixer for mixing, after the temperature is raised to 100-105 DEG C, discharging the mixture from the internal mixer and sequentially carrying out sheeting, cooling and storage (referred to as third storage) to obtain a mixed rubber of high cutting resistance and high wear resistance. The third storage time is preferably not less than 8 h, and specifically can be 8-16 h.

[0039] In the application, after obtaining the final mixed rubber of high cutting resistance and high wear resistance, the application further comprises vulcanizing the final mixed rubber, and the vulcanization temperature is preferably 143 DEG C, and the vulcanization time is preferably 45 min-60 min. In the practical application of the high cutting resistance and high wear resistance of the application, specifically, the final mixed rubber is assembled with other parts of an aviation tire to obtain a tire blank, and then the tire blank is vulcanized as a whole.

[0040] The application also provides the application of the high-cutting-resistance and high-wear-resistance tread rubber in an aviation tire.

[0041] The application also provides an aviation tire comprising the high-cutting-resistance and high-wear-resistance tread rubber.

[0042] The technical solutions in the application will be described clearly and completely below with reference to the embodiments in the application. Obviously, the described embodiments are only some of the embodiments of the application, but not all the embodiments. Based on the embodiments in the application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0043] The following examples and comparative examples use domestic natural rubber No. 2.

[0044] Example 1 The formula of the tread rubber is shown in Table 1, and the preparation method is as follows. (1) The natural rubber and white carbon black are put into a mixer, and the mixing temperature is raised from 80-85℃ to 90-95℃; the active agent is put into the mixer according to the proportion, and mixed and kneaded, and the mixing temperature is raised from 90-95℃ to 100-105℃; the N339 carbon black and the coupling agent are put into the mixer according to the proportion, and mixed and kneaded, and the mixing temperature is raised from 100-105℃ to 120-125℃; the aromatic oil is put into the mixer, and mixed and kneaded, and when the mixing temperature is raised to 140-145℃, the obtained mixture is discharged from the mixer to a tablet press to be sheeted, cooled, and stored for 8 hours to obtain a first-stage mixed rubber.

[0045] (2) The first-stage mixed rubber, zinc oxide, stearic acid, antioxidant, and rubber modifier are put into the mixer according to the proportion, and mixed and kneaded, and the mixing temperature is raised from 80-85℃ to 120-125℃, and the obtained mixture is discharged from the mixer to the tablet press to be sheeted, cooled, and stored for 8 hours to obtain a second-stage mixed rubber.

[0046] (3) The second-stage mixed rubber, insoluble sulfur, a sulfenamide accelerator, an anti-reversion agent, and a scorch retarder are put into the mixer to be mixed and kneaded to 100-105℃, and the obtained mixture is discharged from the mixer to the tablet press to be sheeted, cooled, and stored for 8 hours to obtain a final mixed rubber.

[0047] (4) The final mixed rubber is vulcanized to obtain the tread rubber.

[0048] Example 2 The formula of the tread rubber is shown in Table 1, and the preparation method is the same as that of Example 1.

[0049] Example 3 The formula of the tread rubber is shown in Table 1, and the preparation method is the same as that of Example 1.

[0050] Comparative Example 1 The formula of the tread rubber is shown in Table 1, and the preparation method is the same as that of Example 1.

[0051] Table 1 Formula of the tread rubber of Examples 1-3 and Comparative Example 1

[0052] The tread rubbers obtained in Examples 1-3 and Comparative Example 1 were subjected to performance tests, and the specific test methods were carried out according to the test standards adopted at the time of performance test; wherein the cutting loss was tested by using a rubber dynamic cutting resistance tester, the principle of which was that under a certain load, a cutter with a certain sharpness repeatedly impacted a rotating rubber wheel at a certain frequency, and the weight difference of the rubber sample before and after the impact was compared, the impact frequency during the test was 120 n / min, the sample rotation speed was 720 r / min, and the test time was 20 min; the test tested the weight of the sample cut within a certain mileage (720 r / min, 20 min). The test results are shown in Table 2.

[0053] Table 2 Performance test results of the tread rubbers of Comparative Example and Examples 1-3

[0054] As can be seen from the data in Table 2, the high-cutting-resistance and high-wear-resistance tread rubber provided by the present application has significantly improved cutting resistance and wear resistance compared with the tread rubber of Comparative Example 1, and also has high tensile strength, modulus and elongation at break, high tear strength, high hardness and good aging resistance, which can meet the use requirements of aviation tires. In Comparative Example 1, the addition of the rubber modifier was omitted, and the cutting resistance and wear resistance of the obtained tread rubber were significantly reduced.

[0055] The above only describes the preferred embodiments of the present application, and it should be noted that for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A high cut and abrasion resistant tread compound characterized in that, The preparation raw materials include the following components in parts by weight: natural rubber 100 parts, white carbon black 5-15 parts, coupling agent 1-5 parts, vulcanization activator 1-2 parts, carbon black 45-55 parts, aromatic oil 1-3 parts, zinc oxide 3-6 parts, stearic acid 1-3 parts, antioxidant 2-5 parts, rubber modifier 3-6 parts, insoluble sulfur 1-2 parts, accelerator 1-2 parts, anti-reversion agent 0.5-1 part, and anti-scorching agent 0-0.5 part.

2. The high cut and abrasion resistant tire tread gum of claim 1, wherein, The natural rubber is a domestic natural rubber; and the rubber modifier is RB-200.

3. The high cut and abrasion resistant tire tread gum of claim 1, wherein, The coupling agent is Si-69; the vulcanization activator is ZNZB746; the carbon black is N339 carbon black; the antioxidant is one or more of p-phenylenediamine antioxidants and ketone amine antioxidants; the accelerator is a sulfenamide accelerator; the anti-reversion agent is PK900; and the anti-scorching agent is CTP.

4. Process for the preparation of a high cut and wear resistant tread according to any one of claims 1 to 3, characterized in that, The method comprises the following steps: The natural rubber, white carbon black, vulcanization activator, carbon black, coupling agent, and aromatic oil are subjected to one-stage mixing to obtain one-stage mixed rubber; The one-stage mixed rubber, zinc oxide, stearic acid, antioxidant, and rubber modifier are subjected to two-stage mixing to obtain two-stage mixed rubber; The two-stage mixed rubber, insoluble sulfur, accelerator, anti-reversion agent, and anti-scorching agent are subjected to three-stage mixing to obtain the final mixed rubber of the high-cutting-resistance and high-wear-resistance tire tread.

5. The preparation method according to claim 4, characterized in that, The one-stage mixing comprises the following steps: the natural rubber and white carbon black are mixed in an internal mixer; after the temperature is raised from 80-85℃ to 90-95℃, the vulcanization activator is added and mixed; after the temperature is raised from 90-95℃ to 100-105℃, the carbon black and coupling agent are added and mixed; after the temperature is raised from 100-105℃ to 120-125℃, the aromatic oil is added and mixed; after the temperature is raised to 140-145℃, the mixture is discharged from the internal mixer and subjected to sheeting, cooling, and storage in sequence to obtain the one-stage mixed rubber.

6. The preparation method according to claim 4, characterized in that, The two-stage mixing comprises the following steps: the one-stage mixed rubber, zinc oxide, stearic acid, antioxidant, and rubber modifier are put into an internal mixer and mixed; after the temperature is raised from 80-85℃ to 120-125℃, the mixture is discharged from the internal mixer and subjected to sheeting, cooling, and storage in sequence to obtain the two-stage mixed rubber.

7. The preparation method according to claim 4, characterized in that, The three-stage mixing comprises the following steps: the two-stage mixed rubber, insoluble sulfur, accelerator, anti-reversion agent, and anti-scorching agent are put into an internal mixer and mixed; after the temperature is raised to 100-105℃, the mixture is discharged from the internal mixer and subjected to sheeting, cooling, and storage in sequence to obtain the final mixed rubber of the high-cutting-resistance and high-wear-resistance tire tread.

8. The preparation method according to claim 4, characterized in that, After the final mixed rubber of the high-cutting-resistance and high-wear-resistance tire tread is obtained, the final mixed rubber is subjected to vulcanization.

9. The high-cutting-resistance and high-wear-resistance tire tread of any one of claims 1-4 or prepared by the method of any one of claims 5-8 is applied to an aviation tire.

10. An aircraft tire characterized in that, The high-cutting-resistance and high-wear-resistance tire tread of any one of claims 1-4 or prepared by the method of any one of claims 5-8.

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