ANTI-VIBRATION RUBBER COMPOSITION

The rubber composition with a specific copolymer, carbon black, and crosslinking system addresses the challenges of ozone resistance and frequency-specific energy dissipation, improving the performance and lifespan of anti-vibration articles.

FR3130281B1Active Publication Date: 2025-07-25MICHELIN & CO (CIE GEN DES ESTAB MICHELIN)
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Patent Information

Application Number
FR2021013291
Authority / Receiving Office
FR · FR
Patent Type
Patents
Current Assignee / Owner
Filing Date
2021-12-10
Publication Date
2025-07-25
Estimated Expiration
2041-12-10

AI Technical Summary

Technical Problem

Existing anti-vibration rubber compositions face challenges in achieving high ozone resistance, low energy dissipation at low frequencies to prolong lifespan, and high energy dissipation at high frequencies to reduce vibrations and noise, while maintaining effectiveness across varying temperature ranges.

Method used

A rubber composition comprising a copolymer with ethylene units between 50% to 95%, carbon black with a specific surface area of 5 to 110 m²/g, and a crosslinking system with peroxide and specific co-agents like (meth)acrylate compounds, maleimide compounds, and allylic compounds, enhancing both ozone resistance and frequency-specific energy dissipation.

Benefits of technology

The composition effectively prolongs lifespan by improving ozone resistance and reducing vibrations and noise, while maintaining low energy dissipation at low frequencies and high energy dissipation at high frequencies, thus enhancing the performance of anti-vibration articles.

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Abstract

The invention relates to a rubber composition based on at least one elastomer matrix comprising at least one copolymer containing ethylene units and 1,3-diene units, the molar fraction of the ethylene units in the copolymer being comprised in a range from more than 50% to 95%; a reinforcing filler comprising at least one carbon black whose BET specific surface area is comprised between 5 and 110 m² / g; and a crosslinking system comprising at least one peroxide and one crosslinking co-agent chosen from the group consisting of (meth)acrylate compounds, maleimide compounds, allylic compounds, vinyl compounds and mixtures thereof. It also relates to an anti-vibration rubber article comprising this composition.
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