Process for treating a stainless steel article to improve its adhesion to a rubber composition

A process for the surface treatment of a steel substrate enabling its adhesion to a rubber-contg. compsn. which has the following characteristics: (a) the substrate is a stainless steel of compsn., 0.02-0.2% C; 3-20% Ni, and 12-28% Cr, the sum of Ni and Cr being at least 20-35%, the structure compri...

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Bibliographische Detailangaben
Hauptverfasser:	LENABOUR, DAVID, TONON, CORINNE, GRIMBERG, BRUNO, PERSON, PATRICE
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G ALLOYS CABLES OTHER THAN ELECTRIC CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL COMPOSITIONS BASED THEREON CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, ORYARNS DEVICES OR ARRANGEMENTS RELATED TO TYRES DIFFUSION TREATMENT OF METALLIC MATERIAL DYES FERROUS OR NON-FERROUS ALLOYS GENERAL PROCESSES OF COMPOUNDING INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MECHANICAL FINISHING OF YARNS OR ROPES METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PERFORMING OPERATIONS POLISHES REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL ROPES ROPES OR CABLES IN GENERAL SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS TYRE CHANGING OR REPAIRING TYRE INFLATION USE OF MATERIALS AS ADHESIVES VEHICLE TYRES VEHICLES IN GENERAL WARPING OR BEAMING WORKING-UP YARNS YARNS OR THREADS
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Beschreibung
Zusammenfassung:	A process for the surface treatment of a steel substrate enabling its adhesion to a rubber-contg. compsn. which has the following characteristics: (a) the substrate is a stainless steel of compsn., 0.02-0.2% C; 3-20% Ni, and 12-28% Cr, the sum of Ni and Cr being at least 20-35%, the structure comprising at least 20% (vol) martensite and deficient (or less than 80%) in austenite; and (b) a silane is deposited on the surface before contacting with the rubber-contg. compsn.. Also claimed are manufactured rubber-based articles contg. the coated steel reinforcements esp. rubber tyres. Procédé pour traiter un corps en acier, de façon à favoriser son adhésion à une composition comportant au moins un caoutchouc, comportant les points suivants : on utilise un corps dont au moins la surface est en acier inoxydable, cet acier comportant au moins 0,02 % et au plus 0,2 % de carbone, au moins 3 % et au plus 20 % de nickel, au moins 12 % et au plus 28 % de chrome, la somme du nickel et du chrome étant au moins égale à 20 % et au plus égale à 35 %, toutes ces valeurs en % étant en poids ; la structure de l'acier comporte au moins 20 % en volume de martensite et elle est dépourvue d'austénite ou elle en comporte moins de 80 % en volume ; on active la surface du corps et on la traite ensuite avec au moins un silane de départ pour qu'elle soit recouverte d'un film constitué uniquement, ou pratiquement uniquement, d'un ou plusieurs silanes, de telle sorte que cette surface ainsi traitée peut être mise directement au contact de la composition. Articles comportant une composition de caoutchouc et un corps métallique traité selon le procédé conforme à l'invention, ces articles étant par exemple des enveloppes de pneumatiques.