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Dry mixing method of tire rubber composition, tread composition and low-rolling-resistance high-performance tire

A rubber composition and a technology for the composition, which are applied to special tires, tire parts, transportation and packaging, etc., can solve the problems of insignificant reduction in heat generation, difficult removal of ethanol, high energy consumption in production, and ensure wear resistance. , Low surface energy efficiency, the effect of reducing surface energy

Active Publication Date: 2022-04-08
ZHONGCE RUBBER GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0018] However, the wet process silica or rubber solvent method used in the two patents consumes a lot of energy, and the ethanol produced by the reaction is not easy to remove, which is easy to cause spontaneous combustion. Secondly, the silica masterbatch produced is not suitable for storage. During the storage process, the hardness increases too much. Fast, and the silica masterbatch is too hard and difficult to mix with raw rubber, so the actual heat generation decline is not obvious

Method used

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  • Dry mixing method of tire rubber composition, tread composition and low-rolling-resistance high-performance tire
  • Dry mixing method of tire rubber composition, tread composition and low-rolling-resistance high-performance tire
  • Dry mixing method of tire rubber composition, tread composition and low-rolling-resistance high-performance tire

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preparation example Construction

[0040] 1. The preparation method of silica predispersion is one of the following three methods:

[0041] In the stirred tank, during the stirring process, white carbon black and 1,3-diphenylguanidine are added, and under the action of high pressure, the white carbon black modifier bis(triethoxypropyl silane) ) Tetrasulfide, 3-thiomercaptopropyl-triethoxysilane and PEG4000 are heated to 60°C, sprayed into the stirred tank, stirred and reacted to form a solid mixture, stirred for 20 minutes, transported through pipelines, and transported to the internal mixer In the upper auxiliary machine tank. A white carbon black predispersion 1 was obtained; wherein, 100 parts of white carbon black, 2.5 parts of 1,3-diphenylguanidine, 6.5 parts of bis(triethoxypropylsilane) tetrasulfide, 3-sulfur 2.5 parts of mercaptopropyl-triethoxysilane and 6.0 parts of PEG4000.

[0042] In the stirred tank, during the stirring process, add white carbon black and 1,3-diphenylguanidine, under the action ...

Embodiment 1

[0048] A low-rolling-resistance high-performance tire tread rubber composition component raw materials are composed of the following parts by weight: 100 parts of natural rubber, 2 parts of stearic acid, 3.5 parts of zinc oxide, 1.3 parts of sulfur, 2.6 parts of accelerator NS, and 4020 antioxidants 1.5 parts, 1 part of anti-aging agent RD, 0.75 parts of anti-aging agent DTPD, 1.5 parts of protective wax, 10 parts of carbon black N134, 0.2 parts of carbon black dispersant isophthalohydrazide, 150 parts of white carbon black pre-dispersion, anti-scorch Agent CTP 0.25 parts. For the preparation method, refer to the method in the specific embodiment of the present invention.

Embodiment 2

[0050] A low-rolling-resistance high-performance tire tread rubber composition component raw materials are composed of the following parts by weight: 100 parts of natural rubber, 2 parts of stearic acid, 3.5 parts of zinc oxide, 1.3 parts of sulfur, 2.6 parts of accelerator NS, and 4020 antioxidants 1.5 parts, anti-aging agent RD 1 part, anti-aging agent DTPD 0.75, protective wax 1.5 parts, carbon black N134 10 parts, carbon black dispersant isophthalohydrazide 0.2 parts, white carbon black pre-dispersion 2 50 parts, anti-scorch Agent CTP 0.25 parts. For the preparation method, refer to the method in the specific embodiment of the present invention.

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Abstract

The invention belongs to the technical field of preparation of new materials of rubber tires, and particularly relates to a dry mixing method of a tire rubber composition, a tread composition and a low-rolling-resistance high-performance tire. The invention relates to a dry mixing method of a tire rubber composition, which comprises the following steps: a) adding white carbon black and a white carbon black dispersing agent into a stirring kettle, uniformly stirring and mixing, and reacting to obtain a modified white carbon black pre-dispersed substance; b) adding the white carbon black pre-dispersion and the carbon black masterbatch into an internal mixer, and uniformly mixing to obtain tread rubber masterbatch; and c) adding the tread rubber master batch, the vulcanizing agent, the accelerant and the scorch retarder into the internal mixer, and uniformly mixing to obtain the tire tread rubber composition. According to the method, the dispersion and processing performance of the white carbon black is improved through pre-dispersion modification of the white carbon black, the white carbon black can be mixed with carbon black masterbatch, the Payne effect of the white carbon black can be effectively reduced, hysteresis loss is reduced, the white carbon black is applied to tire tread rubber, and on the premise that the wear resistance of a tire is guaranteed, the rolling resistance of the tire is reduced, and the service life of the tire is prolonged.

Description

technical field [0001] The invention belongs to the technical field of preparation of new rubber tire materials, and in particular relates to a dry mixing method of a tire rubber composition, a tread composition and a high-performance tire with low rolling resistance. Background technique [0002] According to literature reports, truck tires can reduce rolling resistance by 3%, so it can save about 1% of fuel consumption, and with the improvement of road conditions on various road surfaces in recent years, truck radial tires have also begun to pay attention to fuel consumption issues, and with the The implementation of tire labeling laws in various countries also puts forward higher requirements for the rolling resistance of tires. [0003] At present, it is very effective to use carbon black / silica in tire tread rubber to reduce rolling resistance. Silica can significantly reduce rolling resistance and improve wet skid resistance, but because of its dispersion and combinati...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L91/06C08K9/06C08K9/04C08K7/26C08K3/04B60C1/00
CPCY02T10/86
Inventor 胡善军彭俊彪俞敏莉张春生
Owner ZHONGCE RUBBER GRP CO LTD