FR3122658A1 - COMPOSITE BASED ON A RUBBER COMPOSITION AND A METALLIC REINFORCING ELEMENT TREATED WITH PLASMA - Google Patents

COMPOSITE BASED ON A RUBBER COMPOSITION AND A METALLIC REINFORCING ELEMENT TREATED WITH PLASMA Download PDF

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FR3122658A1
FR3122658A1 FR2104899A FR2104899A FR3122658A1 FR 3122658 A1 FR3122658 A1 FR 3122658A1 FR 2104899 A FR2104899 A FR 2104899A FR 2104899 A FR2104899 A FR 2104899A FR 3122658 A1 FR3122658 A1 FR 3122658A1
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Prior art keywords
composite according
composite
rubber composition
volume
atmospheric plasma
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FR2104899A
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French (fr)
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FR3122658B1 (en
Inventor
Marie CROUZET
Franck Daumas
Odile Gavard-Lonchay
Thomas Simonelli
Anne-Lise Thuilliez
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Compagnie Generale des Etablissements Michelin SCA
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Compagnie Generale des Etablissements Michelin SCA
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Priority to FR2104899A priority Critical patent/FR3122658B1/en
Priority to EP22724813.5A priority patent/EP4337717A1/en
Priority to PCT/FR2022/050854 priority patent/WO2022238637A1/en
Publication of FR3122658A1 publication Critical patent/FR3122658A1/en
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
    • C08J5/041—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with metal fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/38—Textile inserts, e.g. cord or canvas layers, for tyres; Treatment of inserts prior to building the tyre
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
    • B60C1/0016—Compositions of the tread
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
    • B60C1/0041—Compositions of the carcass layers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/06—Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L15/00—Compositions of rubber derivatives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
    • B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/0005—Pretreatment of tyres or parts thereof, e.g. preheating, irradiation, precuring
    • B29D2030/0011—Surface activation of tyres or parts thereof, e.g. by plasma treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/38—Textile inserts, e.g. cord or canvas layers, for tyres; Treatment of inserts prior to building the tyre
    • B29D2030/383—Chemical treatment of the reinforcing elements, e.g. cords, wires and filamentary materials, to increase the adhesion to the rubber
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2307/00—Characterised by the use of natural rubber
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Medicinal Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Textile Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

L’invention concerne un composite à base d’une composition de caoutchouc à base d’au moins un élastomère, une charge renforçante, un système de réticulation et d’au moins un élément de renfort métallique noyé dans ladite composition de caoutchouc, ledit composite étant obtenu par un procédé comprenant au moins une étape de génération d’un plasma atmosphérique, une étape de mise en contact de la surface de l’élément de renfort métallique avec le plasma atmosphérique et une étape dans laquelle l’élément de renfort métallique est noyé dans la composition de caoutchouc de manière à obtenir le composite.The invention relates to a composite based on a rubber composition based on at least one elastomer, a reinforcing filler, a crosslinking system and at least one metallic reinforcing element embedded in said rubber composition, said composite being obtained by a method comprising at least one step of generating an atmospheric plasma, a step of bringing the surface of the metal reinforcement element into contact with the atmospheric plasma and a step in which the metal reinforcement element is embedded in the rubber composition so as to obtain the composite.

Description

COMPOSITE À BASE D’UNE COMPOSITION DE CAOUTCHOUC ET D’UN ÉLÉMENT DE RENFORT MÉTALLIQUE TRAITÉ AU PLASMACOMPOSITE BASED ON A RUBBER COMPOSITION AND A METALLIC REINFORCING ELEMENT TREATED WITH PLASMA

Domaine technique de l’inventionTechnical field of the invention

La présente invention est relative au domaine des composites renforcés, en particulier adaptés pour le renforcement des bandages pneumatiques.The present invention relates to the field of reinforced composites, in particular suitable for the reinforcement of pneumatic tires.

Art antérieurPrior art

Les nappes de renforcement des pneumatiques comprennent habituellement un mélange caoutchoutique dans lequel sont noyés des câbles de renforcement, souvent métalliques et recouverts en surface de laiton. L’adhésion entre le mélange caoutchoutique et les câbles métalliques se créé via le phénomène de sulfuration de la surface laitonnée du câble. Cependant, le mélange, tout comme les liaisons créées, peut évoluer sous l’effet de l’humidité, de la température ou d’éléments corrosifs et de leurs effets conjugués, par exemple l’effet conjugué de l’oxydation et de la chaleur (thermo-oxydation) rencontré dans les pneumatiques.Tire reinforcement plies usually comprise a rubber mixture in which reinforcement cords, often metallic and surface-coated with brass, are embedded. The adhesion between the rubber mixture and the metal cables is created via the phenomenon of sulfurization of the brass-coated surface of the cable. However, the mixture, just like the bonds created, can evolve under the effect of humidity, temperature or corrosive elements and their combined effects, for example the combined effect of oxidation and heat. (thermo-oxidation) encountered in tires.

La fonction d’adhésion impose généralement des formulations spécifiques pour la composition de caoutchouc, notamment la nécessité d’un taux de soufre et d’oxyde de zinc élevé, une faible quantité d’acide stéarique, la présence de sel de cobalt, l’emploi d’accélérateur à phase retard longue. Or ces systèmes de vulcanisation à fort taux de soufre constituent une forte contrainte lors de la fabrication de semi-finis, en particulier pour éviter des réticulations prématurées, et entraînent une certaine sensibilité des mélanges à la thermo-oxydation.The adhesion function generally imposes specific formulations for the rubber composition, in particular the need for a high level of sulfur and zinc oxide, a low amount of stearic acid, the presence of cobalt salt, the use of a long-delayed phase accelerator. However, these vulcanization systems with a high sulfur content constitute a strong constraint during the manufacture of semi-finished products, in particular to avoid premature crosslinking, and lead to a certain sensitivity of the mixtures to thermo-oxidation.

De nombreux travaux ont porté sur l’amélioration des formulations de mélange afin de réduire, voire de s’affranchir de l’utilisation de soufre, tout en maintenant ou améliorant les propriétés d’adhésion sans compromettre les autres qualités du mélange. Ainsi, par exemple, le document WO2020/058614 enseigne une composition de caoutchouc à base d’au moins un élastomère comprenant des fonctions époxyde, au moins une charge renforçante, un système de réticulation comprenant un polyacide carboxylique, un imidazole et au moins un composé polyphénolique spécifique présentant des caractéristiques d’adhésion à un élément de renfort particulièrement intéressantes, en particulier pour la constitution de composites destinés à des pneumatiques.Many studies have focused on improving mix formulations in order to reduce or even eliminate the use of sulphur, while maintaining or improving adhesion properties without compromising the other qualities of the mix. Thus, for example, document WO2020/058614 teaches a rubber composition based on at least one elastomer comprising epoxide functions, at least one reinforcing filler, a crosslinking system comprising a polycarboxylic acid, an imidazole and at least one compound specific polyphenolic exhibiting characteristics of adhesion to a reinforcing element that are particularly advantageous, in particular for the constitution of composites intended for tires.

D’autres travaux de recherche se sont axés sur la reformulation du support métallique, en proposant notamment des éléments de renfort dont la surface est revêtue d’un alliage comprenant du cobalt. On peut citer par exemple le brevet US 4,347,290 qui enseigne un composite comprenant une composition élastomérique et un élément de renfort métallique dont la surface est revêtue d’un alliage Cu-Zn-Co montrant une amélioration de l’adhésion, avec toutefois un ratio ZnO/acide stéarique relativement élevé. Ce document n’aborde pas l’aspect de la tenue dans le temps des propriétés.Other research work has focused on the reformulation of the metal support, in particular by proposing reinforcement elements whose surface is coated with an alloy comprising cobalt. Mention may be made, for example, of US Patent 4,347,290 which teaches a composite comprising an elastomeric composition and a metal reinforcing element whose surface is coated with a Cu-Zn-Co alloy showing an improvement in adhesion, with however a ZnO ratio / relatively high stearic acid. This document does not address the aspect of the behavior of the properties over time.

D’autres travaux présentés dans les documents EP 3 336 140, EP 2 371 882 et EP 2 716 694 encore ont porté sur le traitement de la surface des renforts par un plasma atmosphérique, ledit plasma étant généré à partir d’un gaz porteur comprenant un additif tel qu’un composé halogéné, un composé polymérisable et/ou un composé soufré. Ce traitement permet d’obtenir une bonne adhésion, pérenne, mais nécessite un contrôle des teneurs en additifs afin d’obtenir l’effet désiré.Other work presented in the documents EP 3 336 140, EP 2 371 882 and EP 2 716 694 also related to the treatment of the surface of the reinforcements by an atmospheric plasma, said plasma being generated from a carrier gas comprising an additive such as a halogen compound, a polymerizable compound and/or a sulfur compound. This treatment provides good, long-lasting adhesion, but requires control of the additive content in order to obtain the desired effect.

Poursuivant ses recherches, la demanderesse a découvert un composite comprenant une composition de caoutchouc et un renfort, le renfort ayant été traité par un plasma atmosphérique présentant d’excellentes qualités d’adhésion, cette adhésion ayant également une bonne pérennité, ce traitement ne nécessitant pas l’utilisation d’additifs. Le composite selon l’invention présente des qualités particulièrement intéressantes notamment lorsque la composition de caoutchouc ne comprend pas, ou très peu, de composés soufrés.Continuing her research, the applicant discovered a composite comprising a rubber composition and a reinforcement, the reinforcement having been treated with an atmospheric plasma having excellent adhesion qualities, this adhesion also having good durability, this treatment not requiring the use of additives. The composite according to the invention has particularly advantageous qualities, in particular when the rubber composition does not comprise any, or very few, sulfur compounds.

Claims (15)

Composite à base d’une composition de caoutchouc à base d’au moins un élastomère, une charge renforçante, un système de réticulation et d’au moins un élément de renfort métallique noyé dans ladite composition de caoutchouc, ledit composite étant obtenu par un procédé comprenant au moins les étapes successives suivantes :
  1. Une étape de génération d’un plasma atmosphérique à partir d’un gaz choisi parmi l’air et un gaz inerte choisi parmi l’argon, l’hélium et l’azote comprimé ;
  2. Une étape de mise en contact de la surface de l’élément de renfort métallique avec le plasma atmosphérique généré lors de l’étape a) ;
  3. Une étape dans laquelle l’élément de renfort métallique est noyé dans la composition de caoutchouc de manière à obtenir le composite.
Composite based on a rubber composition based on at least one elastomer, a reinforcing filler, a crosslinking system and at least one metallic reinforcing element embedded in said rubber composition, said composite being obtained by a process comprising at least the following successive steps:
  1. A step of generating an atmospheric plasma from a gas chosen from air and an inert gas chosen from argon, helium and compressed nitrogen;
  2. A step of bringing the surface of the metal reinforcement element into contact with the atmospheric plasma generated during step a);
  3. A step in which the metallic reinforcing element is embedded in the rubber composition so as to obtain the composite.
Composite selon la revendication précédente dans lequel le gaz utilisé pour la génération du plasma atmosphérique est exempt de composés organiques, ou en contient moins de 1% volumique, préférentiellement moins de 0,5% volumique, très préférentiellement moins de 0,1% volumique.Composite according to the preceding claim, in which the gas used for generating the atmospheric plasma is free of organic compounds, or contains less than 1% by volume, preferably less than 0.5% by volume, very preferably less than 0.1% by volume. Composite selon l’une quelconque des revendications précédentes dans lequel le gaz utilisé pour la génération du plasma atmosphérique est exempt de composés halogénés, ou en contient moins de 1% volumique, préférentiellement moins de 0,5% volumique, très préférentiellement moins de 0,1% volumique.Composite according to any one of the preceding claims, in which the gas used for generating the atmospheric plasma is free of halogenated compounds, or contains less than 1% by volume, preferably less than 0.5% by volume, very preferably less than 0, 1% by volume. Composite selon l’une quelconque des revendications précédentes dans lequel le gaz utilisé pour la génération du plasma atmosphérique est exempt de composés soufrés, ou en contient moins de 1% volumique, préférentiellement moins de 0,5% volumique, très préférentiellement moins de 0,1% volumique.Composite according to any one of the preceding claims, in which the gas used for generating the atmospheric plasma is free of sulfur compounds, or contains less than 1% by volume, preferably less than 0.5% by volume, very preferably less than 0, 1% by volume. Composite selon l’une quelconque des revendications précédentes dans lequel le gaz utilisé pour la génération du plasma atmosphérique est de l’air.Composite according to any one of the preceding claims, in which the gas used for the generation of the atmospheric plasma is air. Composite selon l’une quelconque des revendications précédentes dans lequel, lors de l’étape b), l’élément de renfort métallique défile continûment pendant son exposition au plasma, préférentiellement à une vitesse comprise entre 3 et 100 m/min, de manière préférée à une vitesse comprise entre 5 et 80 m/min.Composite according to any one of the preceding claims, in which, during step b), the metallic reinforcing element moves continuously during its exposure to the plasma, preferably at a speed of between 3 and 100 m/min, preferably at a speed between 5 and 80 m/min. Composite selon l’une quelconque des revendications précédentes dans lequel, lors de l’étape b), le débit de plasma est compris entre 1000 et 3000 l/h.Composite according to any one of the preceding claims, in which, during step b), the plasma flow rate is between 1000 and 3000 l/h. Composite selon l’une quelconque des revendications précédentes dans lequel la charge renforçante de la composition de caoutchouc comprend du noir de carbone, de la silice ou un mélange de noir de carbone et de silice.Composite according to any one of the preceding claims, in which the reinforcing filler of the rubber composition comprises carbon black, silica or a mixture of carbon black and silica. Composite selon l’une quelconque des revendications précédentes dans lequel la composition de caoutchouc comprend un élastomère diénique choisi dans le groupe constitué par les polybutadiènes, le caoutchouc naturel, les polyisoprènes de synthèse, les copolymères de butadiène, les copolymères d'isoprène, et les mélanges de ces élastomères.Composite according to any one of the preceding claims, in which the rubber composition comprises a diene elastomer chosen from the group consisting of polybutadienes, natural rubber, synthetic polyisoprenes, butadiene copolymers, isoprene copolymers, and mixtures of these elastomers. Composite selon l’une quelconque des revendications précédentes dans lequel l’élastomère diénique comprend des fonctions époxydes, le système de réticulation comprenant un polyacide carboxylique de formule générale (I)
(I)
dans laquelle A représente une liaison covalente ou un groupement hydrocarboné comportant au moins 1 atome de carbone, éventuellement substitué et éventuellement interrompu par un ou plusieurs hétéroatomes, un imidazole de formule générale (II)
(II)
dans laquelle,
  • R1représente un groupement hydrocarboné ou un atome d’hydrogène,
  • R2représente un groupement hydrocarboné,
  • R3et R4représentent indépendamment l’un de l’autre, un atome d’hydrogène ou un groupement hydrocarboné, ou encore R3et R4forment ensemble, avec les atomes de carbone du cycle imidazole auxquels ils se rattachent, un cycle.
Composite according to any one of the preceding claims, in which the diene elastomer comprises epoxy functions, the crosslinking system comprising a polycarboxylic acid of general formula (I)
(I)
in which A represents a covalent bond or a hydrocarbon group containing at least 1 carbon atom, optionally substituted and optionally interrupted by one or more heteroatoms, an imidazole of general formula (II)
(II)
in which,
  • R 1 represents a hydrocarbon group or a hydrogen atom,
  • R 2 represents a hydrocarbon group,
  • R 3 and R 4 independently represent a hydrogen atom or a hydrocarbon group, or else R 3 and R 4 form together, with the carbon atoms of the imidazole ring to which they are attached, a ring .
Composite selon l’une quelconque des revendications précédentes dans lequel la composition de caoutchouc comprend un composé polyphénolique comprenant au moins trois cycles aromatiques comprenant 6 atomes de carbone, chacun étant porteur au moins de deux groupes hydroxyles vicinaux, préférentiellement choisi parmi les gallotannins, de préférence parmi les esters à base d’acide gallique et d’un polyol choisi parmi les pentoses et les hexoses.Composite according to any one of the preceding claims, in which the rubber composition comprises a polyphenolic compound comprising at least three aromatic rings comprising 6 carbon atoms, each carrying at least two vicinal hydroxyl groups, preferably chosen from gallotannins, preferably from esters based on gallic acid and on a polyol chosen from pentoses and hexoses. Composite selon la revendication 11 lorsque la revendication 11 dépend de la revendication 10 dans laquelle ladite composition est dépourvue de soufre moléculaire ou en contient moins de 1 pce.Composite according to Claim 11 when Claim 11 depends on Claim 10, in which the said composition is devoid of molecular sulfur or contains less than 1 phr thereof. Article de caoutchouc comprenant un composite selon l’une quelconque des revendications précédentes.A rubber article comprising a composite according to any preceding claim. Article selon la revendication précédente choisi dans le groupe comprenant les bandages pneumatiques ou non pneumatiques, les courroies de transmission, les bandes transporteuses, les chenilles.Article according to the preceding claim chosen from the group comprising pneumatic or non-pneumatic tires, transmission belts, conveyor belts, caterpillars. Procédé de fabrication d’un composite comprenant au moins les étapes successives suivantes :
  1. Une étape de génération d’un plasma atmosphérique à partir d’air comprimé ;
  2. Une étape de mise en contact de la surface de l’élément de renfort métallique avec le plasma atmosphérique généré lors de l’étape a) ;
  3. Une étape dans laquelle l’élément de renfort est noyé dans la composition de caoutchouc de manière à obtenir le composite.
Process for manufacturing a composite comprising at least the following successive steps:
  1. A step of generating an atmospheric plasma from compressed air;
  2. A step of bringing the surface of the metallic reinforcing element into contact with the atmospheric plasma generated during step a);
  3. A step in which the reinforcing element is embedded in the rubber composition so as to obtain the composite.
FR2104899A 2021-05-10 2021-05-10 COMPOSITE BASED ON A RUBBER COMPOSITION AND A PLASMA-TREATED METAL REINFORCING ELEMENT Active FR3122658B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR2104899A FR3122658B1 (en) 2021-05-10 2021-05-10 COMPOSITE BASED ON A RUBBER COMPOSITION AND A PLASMA-TREATED METAL REINFORCING ELEMENT
EP22724813.5A EP4337717A1 (en) 2021-05-10 2022-05-03 Composite material, based on a rubber composition and a plasma-treated metallic reinforcing element
PCT/FR2022/050854 WO2022238637A1 (en) 2021-05-10 2022-05-03 Composite material, based on a rubber composition and a plasma-treated metallic reinforcing element

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2104899A FR3122658B1 (en) 2021-05-10 2021-05-10 COMPOSITE BASED ON A RUBBER COMPOSITION AND A PLASMA-TREATED METAL REINFORCING ELEMENT
FR2104899 2021-05-10

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FR3122658A1 true FR3122658A1 (en) 2022-11-11
FR3122658B1 FR3122658B1 (en) 2024-06-14

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EP (1) EP4337717A1 (en)
FR (1) FR3122658B1 (en)
WO (1) WO2022238637A1 (en)

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US4347290A (en) 1978-05-26 1982-08-31 N.V. Bekaert S.A. Steel wire reinforcing elements
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