Method for producing rubber composition, rubber composition and tire obtained therefrom

一种橡胶组合物、制造方法的技术，应用在特殊轮胎、轮胎零部件、轮胎胎面/胎面花纹等方向，能够解决恶化橡胶组合物耐摩耗性等问题，达到降低发热性、改善耐摩耗性、降低滚动阻力的效果

Active Publication Date: 2018-05-04
BRIDGESTONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, merely reducing the amount of carbon black used deteriorates the abrasion resistance of the rubber composition

Method used

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  • Method for producing rubber composition, rubber composition and tire obtained therefrom
  • Method for producing rubber composition, rubber composition and tire obtained therefrom
  • Method for producing rubber composition, rubber composition and tire obtained therefrom

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0097] (Preparation of rubber composition)

[0098] In the rubber composition of the present invention, in addition to the rubber component comprising the above-mentioned natural rubber and the above-mentioned modified conjugated diene-based polymer and the above-mentioned carbon black, any other compounding ingredients generally used in the rubber industry, such as , inorganic fillers, vulcanizing agents, vulcanization accelerators, zinc oxide, stearic acid, anti-aging agents, etc. may be appropriately and selectively mixed within the range not detracting from the object of the present invention. As for the compounding ingredients, commercially available products can be favorably used. The rubber composition can be prepared by mixing the rubber component, carbon black, and optional various compounding ingredients, and then using an enclosed mixing device such as a Banbury mixer, an internal mixer, or an intensive mixer or the like. It is prepared by kneading with a non-herme...

Embodiment

[0107] Hereinafter, the present invention is described in more detail with reference to Examples, but the present invention is not limited to the following Examples in any way.

[0108] The exothermic properties (tan δ) (23°C) and dynamic storage modulus E' (23°C) of the rubber composition, and the rolling resistance, wear resistance, tear resistance, and cut resistance of the tire were evaluated according to the following methods .

[0109] (1) Heat generation (tanδ) (23°C) and dynamic storage modulus E' (23°C, unit: MPa)

[0110] Using a dynamic tensile viscoelasticity measuring device (Spectrometer, manufactured by Ueshima Seisakusho Co., Ltd.), the measurement was performed at a measurement temperature of 23° C., an initial strain of 5%, a dynamic strain of 2%, and a frequency of 52 Hz. Smaller tan δ means lower heat generation and less hysteresis loss.

[0111] (2) Rolling resistance

[0112] Measured in accordance with JIS D 4234:2009. The measured rolling resistance...

manufacture example

[0125] Put 283g of cyclohexane, 50g of 1,3-butadiene, 0.0057mmol of 2,2-ditetrahydrofurylpropane and 0.513mmol of hexamethyleneimine into about 900mL of pressure-resistant glass that has been dried and purged with nitrogen In the container, further, 0.57 mmol of n-butyllithium (BuLi) was added thereto, followed by polymerization in a hot water bath at 50° C. equipped with a stirrer for 4.5 hours. At this time, the polymerization conversion rate was almost 100%. Next, as a modifier (coupling agent), 0.100 mmol of tin tetrachloride was quickly added to the polymerization system, and further stirred at 50° C. for 30 minutes for modification reaction. Subsequently, 0.5 mL of 2,6-di-tert-butyl-p-cresol (BHT) in isopropanol (BHT concentration: 5% by mass) was added to the polymerization system to terminate the reaction, and further, according to a conventional method, it was dried to obtain the modified permanent polybutadiene rubber (HMI-BR). The resulting HMI-BR had a vinyl bond...

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Abstract

The object of the present invention is to provide: a kind of manufacturing method of rubber composition for tire tread, described rubber composition is by the nitrogen adsorption specific surface area (N2SA) of 40 to 60 mass parts with respect to 100 mass parts of rubber components 40 to 95m2 / g and a hydrogen release rate of 0.37% or more by mass blending of carbon black, the rubber component comprising 60 to 80 parts by mass of natural rubber and 20 to 40 parts by mass of one or more carbon blacks having carbon and A modified conjugated diene polymer having a functional group of an atom other than hydrogen, wherein the method for producing a rubber composition for tire tread is characterized in that: The temperature is 170° C. or higher; a rubber composition obtained by the production method and a tire using the rubber composition; a production method of the rubber composition whereby the heat generation of the rubber composition is reduced and the dynamic energy storage mode The amount can be further increased; and a tire in which the rolling resistance is reduced, and the wear resistance, tear resistance (tear resistance) and cut resistance are combined by using the rubber obtained by means of the manufacturing method in the tread things to improve.

Description

technical field [0001] The present invention relates to a method for the manufacture of a rubber composition, a rubber composition and a tire obtained according to said method. More precisely, the present invention particularly relates to a rubber composition capable of reducing rolling resistance while improving durability such as abrasion resistance and tear resistance, and to a tire containing the same. Background technique [0002] Recently, with social demands for energy saving and conservation of natural resources, tires having small rolling resistance have become desirable for improving fuel economy of automobiles. For such demand, as a means for reducing the rolling resistance of tires, it is known to use a rubber composition having reduced hysteresis loss in which the amount of carbon black used is reduced or low-grade carbon black is used, that is, has low heat build-up The rubber composition is used as a tire component, especially as a method of tread rubber. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L7/00B60C1/00B60C11/00C08J3/20C08K3/04C08K3/36C08L15/00
CPCC08J3/20C08K3/36C08L7/00B60C1/0016C08J2307/00C08J2409/00C08K2201/006C08K3/04C08K9/06C08L9/00Y02T10/86C08J2307/02C08L7/02
Inventor 胜部善博
Owner BRIDGESTONE CORP
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