Rubber composition for all-steel tread, and preparation method thereof

Abstract

The invention provides a rubber composition for an all-steel tread, and a preparation method thereof. The rubber composition for the all-steel tread comprises, by weight, natural rubber, neodymium branched cis-polybutadiene rubber, carbon black, a dispersant, an anti-aging agent, sulfur, an accelerator, an activator and a scorch retarder. The rubber composition is prepared by five-stage mixing. The all-steel tread rubber composition of the invention adopts an N134 pure carbon black filling system, and the use amount of carbon black is controlled within an appropriate range, so the rubber material has a low rolling resistance and a high wear resistance; the system branched cis-polybutadiene rubber is used, so the tear resistance of the tread is considered while reducing the rolling resistance and improving the wear resistance; and the five-stage mixing preparation method is beneficial to promote the contact and reaction of the N134 carbon black with the natural rubber and the neodymiumbranched cis-polybutadiene rubber in order to produce more carbon black binder, so the rolling resistance, the wear resistance and the tear resistance are comprehensively improved.

Description

technical field

[0001] The invention belongs to the technical field of tire rubber materials, and in particular relates to a rubber composition for all-steel treads and a preparation method thereof. Background technique

[0002] As we all know, green tires have low rolling resistance and low fuel consumption, which can reduce automobile carbon dioxide emissions and greatly improve social and economic benefits. The tire tread rolling resistance accounts for about 50% of the entire tire rolling resistance, so reducing the tread rolling resistance is the key It has become the primary goal of designing green tires.

[0003] The main component of the tire tread is rubber. Rubber is a viscoelastic material. The mechanical behavior of viscoelastic materials is between complete elasticity and complete viscosity. This material cannot be completely reset after deformation. Even if it is reset, it will take a while. During the reset process Accompanied by energy loss in the rolling re...

Examples

Embodiment 1

[0037] 50 parts of natural rubber, 50 parts of neodymium branched butadiene rubber, 55 parts of N134 carbon black, 1.5 parts of metal saponified product, 1 part of microcrystalline wax, 2,2,4-trimethyl-1,2-dihydroquinoline 1 part of morphine polymer, 2 parts of N-phenyl-N'-(1,3-dimethylbutyl)-p-phenylenediamine, 0.5 part of N, N'-xylyl-p-phenylenediamine, 1 part of ordinary sulfur 2 parts, 2 parts of N-tert-butyl-2-benzothiazole hypoxanthamide, 2 parts of zinc oxide, 4 parts of stearic acid, 0.2 parts of N-cyclohexylthiophthalimide.

[0038] The preparation method that the rubber composition described in this embodiment adopts, comprises the following steps:

[0039] S1, put the natural rubber, neodymium branched butadiene rubber, dispersant, anti-aging agent, and active agent respectively according to the ratio of this embodiment into the internal mixer, the rotating speed of the internal mixer is 50rpm, the pressure is 110Bar, pressurize Lift the mound for 20S, then add N13...

Embodiment 2

[0045] 70 parts of natural rubber, 30 parts of neodymium-based branched butadiene rubber, 47 parts of N134 carbon black, 2 parts of metal saponification, 2 parts of microcrystalline wax, 2,2,4-trimethyl-1,2-dihydroquinone 3 parts of morphine polymer, 1.5 parts of ordinary sulfur, 1.5 parts of N-tert-butyl-2-benzothiazole hyposinamide, 2 parts of zinc oxide, 2 parts of stearic acid, N-cyclohexylthiophthaloyl 0.5 part of imine.

[0046] The preparation method that the rubber composition described in this embodiment adopts, comprises the following steps:

[0047]S1, put the natural rubber, neodymium branched butadiene rubber, dispersant, anti-aging agent, and active agent weighed respectively according to the proportioning described in this embodiment into the internal mixer, the rotating speed of the internal mixer is 40rpm, and the pressure is 100Bar , pressurize for 40S to lift the mound, then add N134 carbon black into the internal mixer and pressurize for 60S to lift the mo...

Embodiment 3

[0053] 90 parts of natural rubber, 10 parts of neodymium branched butadiene rubber, 40 parts of N134 carbon black, 1 part of metal saponified product, 1 part of 2,2,4-trimethyl-1,2-dihydroquinoline polymer, 1 part of N, N'-xylyl-p-phenylenediamine, 2 parts of insoluble sulfur, 1.5 parts of N-tert-butyl-2-benzothiazole hypoxanthamide, 3 parts of zinc oxide, 1.5 parts of stearic acid, N- 0.35 parts of cyclohexylthiophthalimide.

[0054] The preparation method that the rubber composition described in this embodiment adopts, comprises the following steps:

[0055] S1, put the natural rubber, neodymium branched butadiene rubber, dispersant, anti-aging agent, and active agent into the internal mixer according to the proportioning ratio described in this embodiment, the rotating speed of the internal mixer is 45rpm, and the pressure is 90Bar , pressurize for 30S to lift the mound, then add N134 carbon black into the internal mixer and pressurize for 65S to lift the mound, then mix a...

technical field

[0001] The invention belongs to the technical field of tire rubber materials, and in particular relates to a rubber composition for all-steel treads and a preparation method thereof. Background technique

[0002] As we all know, green tires have low rolling resistance and low fuel consumption, which can reduce automobile carbon dioxide emissions and greatly improve social and economic benefits. The tire tread rolling resistance accounts for about 50% of the entire tire rolling resistance, so reducing the tread rolling resistance is the key It has become the primary goal of designing green tires.

[0003] The main component of the tire tread is rubber. Rubber is a viscoelastic material. The mechanical behavior of viscoelastic materials is between complete elasticity and complete viscosity. This material cannot be completely reset after deformation. Even if it is reset, it will take a while. During the reset process Accompanied by energy loss in the rolling re...

Examples

Embodiment 1

[0037] 50 parts of natural rubber, 50 parts of neodymium branched butadiene rubber, 55 parts of N134 carbon black, 1.5 parts of metal saponified product, 1 part of microcrystalline wax, 2,2,4-trimethyl-1,2-dihydroquinoline 1 part of morphine polymer, 2 parts of N-phenyl-N'-(1,3-dimethylbutyl)-p-phenylenediamine, 0.5 part of N, N'-xylyl-p-phenylenediamine, 1 part of ordinary sulfur 2 parts, 2 parts of N-tert-butyl-2-benzothiazole hypoxanthamide, 2 parts of zinc oxide, 4 parts of stearic acid, 0.2 parts of N-cyclohexylthiophthalimide.

[0038] The preparation method that the rubber composition described in this embodiment adopts, comprises the following steps:

[0039] S1, put the natural rubber, neodymium branched butadiene rubber, dispersant, anti-aging agent, and active agent respectively according to the ratio of this embodiment into the internal mixer, the rotating speed of the internal mixer is 50rpm, the pressure is 110Bar, pressurize Lift the mound for 20S, then add N13...

Embodiment 2

[0045] 70 parts of natural rubber, 30 parts of neodymium-based branched butadiene rubber, 47 parts of N134 carbon black, 2 parts of metal saponification, 2 parts of microcrystalline wax, 2,2,4-trimethyl-1,2-dihydroquinone 3 parts of morphine polymer, 1.5 parts of ordinary sulfur, 1.5 parts of N-tert-butyl-2-benzothiazole hyposinamide, 2 parts of zinc oxide, 2 parts of stearic acid, N-cyclohexylthiophthaloyl 0.5 part of imine.

[0046] The preparation method that the rubber composition described in this embodiment adopts, comprises the following steps:

[0047]S1, put the natural rubber, neodymium branched butadiene rubber, dispersant, anti-aging agent, and active agent weighed respectively according to the proportioning described in this embodiment into the internal mixer, the rotating speed of the internal mixer is 40rpm, and the pressure is 100Bar , pressurize for 40S to lift the mound, then add N134 carbon black into the internal mixer and pressurize for 60S to lift the mo...

Embodiment 3

[0053] 90 parts of natural rubber, 10 parts of neodymium branched butadiene rubber, 40 parts of N134 carbon black, 1 part of metal saponified product, 1 part of 2,2,4-trimethyl-1,2-dihydroquinoline polymer, 1 part of N, N'-xylyl-p-phenylenediamine, 2 parts of insoluble sulfur, 1.5 parts of N-tert-butyl-2-benzothiazole hypoxanthamide, 3 parts of zinc oxide, 1.5 parts of stearic acid, N- 0.35 parts of cyclohexylthiophthalimide.

[0054] The preparation method that the rubber composition described in this embodiment adopts, comprises the following steps:

[0055] S1, put the natural rubber, neodymium branched butadiene rubber, dispersant, anti-aging agent, and active agent into the internal mixer according to the proportioning ratio described in this embodiment, the rotating speed of the internal mixer is 45rpm, and the pressure is 90Bar , pressurize for 30S to lift the mound, then add N134 carbon black into the internal mixer and pressurize for 65S to lift the mound, then mix a...

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