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Elastomer composition having a very good dispersion of the charge in the elastomer matrix

A technology of elastomer matrix, composition, applied in heavy-duty tires, transportation and packaging, special tires, etc., can solve the problems of energy-to-break properties (elongation-at-break, stress-at-break performance degradation, etc.

Active Publication Date: 2014-06-25
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is known that the use of such plasticizers causes a very significant deterioration of the energy-to-break properties (elongation at break and stress at break properties)

Method used

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  • Elastomer composition having a very good dispersion of the charge in the elastomer matrix
  • Elastomer composition having a very good dispersion of the charge in the elastomer matrix
  • Elastomer composition having a very good dispersion of the charge in the elastomer matrix

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] I. Measurement and Testing

[0038] The rubber compositions were characterized before and after curing as described below.

[0039] Mooney plasticity

[0040] A vibrating consistency meter as described in French standard NF T43-005 (1991) is used. Mooney plasticity measurements are performed according to the following principle: The composition in the uncured state (ie before curing) is molded in a cylindrical chamber heated to 100°C. After a 1 minute warm-up, the (small size) rotor was rotated within the sample at 2 rpm and the working torque to maintain this movement was measured after 4 minutes of rotation. Mooney plasticity (MS1+4) is expressed in "Mooney units" (MU (French abbreviation "UM"), 1MU=0.83 Newton.meter).

[0041] dispersion

[0042] As is known, the dispersibility of fillers in an elastomer matrix can be expressed by the Z value after crosslinking according to S. Otto et al. in Kautschuk Gummi Kunststoffe, 58th edition, NR7-8 / 2005 (according to I...

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PUM

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Abstract

The invention relates to a rubber composition based on at least one dienic elastomer, a reinforcing filler including at least carbon black, having a specific surface area CTAB greater than or equal to 130 m2 / g, a plasticizing hydrocarbon resin, the vitreous transition temperature of which, Tg, is greater than 20 DEG C and the softening temperature of which is less than 170 DEG C, and a cross linking system, the dispersion of the charge in the elastomer matrix having a Z score greater than or equal to 70.

Description

technical field [0001] The present invention relates to rubber compositions in particular for tire treads, more particularly for tires intended to fit vehicles such as trucks, tractors, trailers or buses, aircraft and the like, carrying heavy loads and operating at sustained speeds. Background technique [0002] Some existing tires, known as "road" tires, are designed to run at high speeds and travel longer and longer distances due to the improvement of the road network and the development of the highway network throughout the world. However, as the need to save fuel and protect the environment becomes a priority, it is important for tires to have low energy consumption. One source of energy dissipation is the heating of the tires. [0003] Similarly, it is known that the treads of tires for civil engineering are particularly sensitive to elevated temperatures. There are ongoing attempts to improve the properties of tires, in particular their wear resistance, and it is gen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K3/04C08K5/01C08J3/215C08J3/22
CPCC08J3/215C08J2309/00C08K5/01C08J3/22C08L7/00C08J2321/00C08K3/04C08K2201/006C08L21/00C08K3/013C08L101/00C08K3/36B60C1/0016B60C2200/06C08L9/00
Inventor M·塞维尼翁C·贝林
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN