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Rubber composition for tire insulations and tire using same

一种橡胶组合物、隔离层的技术，应用在充气轮胎的增强层、特殊轮胎、轮胎零部件等方向，能够解决没有考虑到改善滚动阻力特性等问题，达到耐久性优异、滚动阻力特性优异、成本下降的效果

Active Publication Date: 2013-06-05
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention described in Patent Document 2 is to use a diene rubber containing 70 to 100 parts by mass of natural rubber based on 100 parts by mass of a diene rubber containing 5 to 70 parts by mass of bituminous coal powder having an average particle diameter of 0.1 mm or less. Rubber composition for insulation, which has improved moisture resistance and improved tire durability, but does not take into account the improvement of rolling resistance characteristics

Method used

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  • Rubber composition for tire insulations and tire using same
  • Rubber composition for tire insulations and tire using same
  • Rubber composition for tire insulations and tire using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～36 and comparative example 1～11

[0132] In the formulations shown in Tables 1 to 4, various chemicals (excluding the alkylphenol-sulfur chloride condensate, insoluble sulfur and vulcanization accelerator TBBS) were kneaded in a Banbury internal mixer to obtain kneaded products. Next, using an open mill, the alkylphenol-sulfur chloride condensate, insoluble sulfur, and vulcanization accelerator TBBS were added to the obtained kneaded product and kneaded to obtain an unvulcanized rubber composition. The obtained unvulcanized rubber compositions were vulcanized under pressure at 170° C. for 12 minutes to prepare vulcanized rubber compositions of Examples 1 to 36 and Comparative Examples 1 to 11, and the following viscoelasticity tests and tensile tests were performed.

[0133] (viscoelasticity test)

[0134] The prepared test piece was cut to a width of 4 mm, a length of 40 mm, and a thickness of 2 mm. Using a viscoelastic spectrophotometer VES (viscoelastic spectrometer VES) manufactured by Iwamoto Seisakusho C...

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PUM

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Abstract

For the purpose of improving rolling resistance and durability, the present invention provides a rubber composition for insulation of a tire comprising 0.2 to 4 parts by mass of (B) an alkylphenol-sulfur chloride condensate, and 20 to 59 parts by mass of (C) carbon black having a BET specific surface area of 25 to 50 m 2 / g based on 100 parts by mass of (A) a rubber component comprising 30 to 85% by mass of (a1) a natural rubber and / or an isoprene rubber, 0 to 70% by mass of (a2) at least one styrene butadiene rubber selected from the group consisting of an emulsion-polymerized styrene butadiene rubber, a solution-polymerized styrene butadiene rubber and a modified styrene butadiene rubber, and 0 to 60% by mass of (a3) a butadiene rubber, and a tire having insulation prepared from the rubber composition.

Description

technical field [0001] The present invention relates to a rubber composition for tire insulation and a pneumatic tire using the composition. Background technique [0002] In recent years, the demand for low fuel consumption of vehicles has been increasing, and the demand for tires with low rolling resistance has also become increasingly strong. Here, there is no exception to the demand for a rubber composition for an insulation that reduces the rolling resistance of a tire by reducing the tan δ of the rubber composition constituting each member of the tire. [0003] The isolation layer of the tire refers to the rubber pad arranged between the inner liner and the carcass, or the inner layer sidewall arranged between the carcass and the outer sidewall, and other components arranged between the carcass and the component. Most of the rubber compositions are used for the purpose of strengthening the carcass to improve the durability of the tire, and require moderate rubber stren...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00B60C1/00C08K3/04C08L9/00C08L81/02
CPCB60C9/14B60C1/0025C08L7/00B60C13/00C08K3/04C08L9/06C08L81/02Y02T10/86C08L9/00C08K3/013C08K5/02C08F2/22C08K2201/005C08K2201/006
Inventor 宫崎达也
Owner SUMITOMO RUBBER IND LTD
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