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Tread mix

A technology of compound rubber and tread, which is applied in the field of tread compound rubber, and can solve problems such as deterioration performance and difficulties

Active Publication Date: 2012-07-18
BRIDGESTONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although all of the above three properties can be improved individually, it is difficult to improve them simultaneously without improving one of them while degrading the other or both

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0027] Two control mixes (A, B) and three mixes (C, D, E) according to the teachings of the present invention were produced and each was tested to determine its relation to wet grip, rolling resistance and wear resistance sexual characteristics.

[0028] The mixes described in the examples were produced as follows:

[0029] -Compound preparation-

[0030] (first mixing stage)

[0031] First, put cross-linkable polymers, silica, silane coupling agent and oil into a fixed 230-270 liter tangential rotor mixer until the filling rate is 66-72%.

[0032] The kneader operates at a rotational speed of 40-60 rpm, and unloads the obtained mixed rubber when the temperature reaches 140-160°C.

[0033] (second mixing stage)

[0034] Mix the rubber compound from the previous stage in a mixer operating at a speed of 40~60rpm, and discharge when the temperature reaches 130~150°C.

[0035] (third mixing stage)

[0036] Add the curing system to the mix from the previous stage until the fi...

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PUM

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Abstract

A tread mix having a cross-linkable unsaturated-chain polymer base; curing agents; silica; and a silane bonding agent. The silica has a surface area of 170-230 m2 / g, and the silane bonding agent is a mercaptosilane of formula I : SH(CH2)3SiR1R2 2 (D where : R1 is -OCH2CH3 R2 is -O(CH2CH2O)5(CH2)12CH3.

Description

technical field [0001] The invention relates to a tread compound rubber. [0002] The term "silica" refers to a silica-based reinforcing agent. [0003] The term "crosslinkable unsaturated chain polymers" refers to any natural or synthetic non-crosslinked polymeric species capable of exhibiting all the physicochemical and mechanical properties typically exhibited by elastomers when crosslinked (cured) with sulfur-based systems things. Background technique [0004] As is well known, part of the research carried out in the tire industry is aimed at obtaining treads with improved wet grip, rolling resistance and wear resistance. [0005] Although all of the above three properties can be improved individually, it is difficult to improve them simultaneously without improving one of them while degrading the other or both. [0006] In this regard, silica has long been used to partially or completely replace carbon black as a reinforcing filler in tread compounds because of its a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C1/00C08K5/37C08K5/54C08K5/548C08L9/06
CPCC08K3/36C08K5/548C08L9/06B60C1/0016C08L2205/02C08L2666/08C08L2666/02
Inventor 拉菲勒·迪蒙扎大卫·普力威特拉
Owner BRIDGESTONE CORP