EP0054861B1 - Procédé pour fabriquer une structure composite caoutchouc-métal - Google Patents

Procédé pour fabriquer une structure composite caoutchouc-métal Download PDF

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Publication number
EP0054861B1
EP0054861B1 EP81110336A EP81110336A EP0054861B1 EP 0054861 B1 EP0054861 B1 EP 0054861B1 EP 81110336 A EP81110336 A EP 81110336A EP 81110336 A EP81110336 A EP 81110336A EP 0054861 B1 EP0054861 B1 EP 0054861B1
Authority
EP
European Patent Office
Prior art keywords
process according
lacquer
coat
baked
rubber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP81110336A
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German (de)
English (en)
Other versions
EP0054861A1 (fr
Inventor
Volker Dr. Härtel
Fritz Schreiber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Metzeler Gimetall AG
Original Assignee
Metzeler Kautschuk GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Metzeler Kautschuk GmbH filed Critical Metzeler Kautschuk GmbH
Publication of EP0054861A1 publication Critical patent/EP0054861A1/fr
Application granted granted Critical
Publication of EP0054861B1 publication Critical patent/EP0054861B1/fr
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D13/00—Electrophoretic coating characterised by the process

Definitions

  • the invention relates to a method for producing a rubber / metal composite body of the type specified in the preamble of claim 1.
  • a disadvantage of the known methods is that the stoved lacquer layer must first be provided with an adhesive primer before the actual adhesive system based on halogenated polyolefins can be applied.
  • the invention is therefore based on the object of providing a method for producing a rubber / metal composite body of the type specified, in which the perfect adhesion between the lacquer coating and the vulcanized rubber part is ensured even without the use of a primer.
  • the advantages achieved by the invention are based on the one hand on the use of a cataphoretic dip coating for the application of the coating and on the other hand on the direct application of the adhesive system based on halogenated polymers to the baked coating. Because with a burned-in lacquer coating that has been applied by means of a cataphoretic dip-coating process, a uniform, thin layer results that can serve directly as a primer, so that the previously customary measure, namely the use of a heat-reactive phenol resin as a primer, can be omitted .
  • the high degree of coverage of the cataphoretic dip coating ensures that the coating is so thin and uniform, even in hard-to-reach areas of the metal part, that even threads can be coated with the appropriate design and still remain true to teaching.
  • the preferred lacquer layers with a thickness of about 20 J..Lm can be deposited in a maximum of one minute, so that the generation of the lacquer layer does not significantly extend the manufacturing process.
  • water-soluble, precondensed epoxy ester systems are used for the cataphoretic dip coating, the ester groups being formaldehyde-reactive resin groups based on phenol, melamine or urea.
  • the dispenser systems are blocked; the reactions, i.e. the polyaddition and polycondensation, take place at about 250 ° C.
  • the invention is explained in more detail below using an exemplary embodiment with reference to the accompanying schematic drawing:
  • the figure shows a representation of the cataphoretic dip coating.
  • dip coating the solids contained in the dip coating are deposited by an electrochemical process on the tool to be coated; According to the invention, this deposition is carried out by cataphoretic dip painting.
  • the workpiece to be coated forms the cathode, that is to say the negative pole, while additional anodes, usually hung in dialysis boxes, made of a special material, for example graphite, serve as the positive pole; the pool itself is grounded and isolated.
  • the cathode i.e. i.e., the workpiece, a water-insoluble lye.
  • the coagulated lacquer settles on the cathode, i.e. i.e., firmly on the workpiece.
  • the cataphoretic dip coating has a significant advantage over the anaphoretic dip coating: since the workpiece to be coated forms the cathode, in contrast to the anaphoretic dip coating, no metal ions can be released on the workpiece. Furthermore, there is no acidic area in the boundary layer, so that the one generally applied in the pretreatment Phosphate layer is protected against destruction; this is an essential factor for the higher corrosion resistance.
  • the metal part to be coated is first degreased and then zinc phosphated with passivating rinsing. This rinsing can be carried out with a solution containing Cr Vi, which leads to a solidification of the phosphate layer.
  • the metal part pretreated in this way is then hung in a basin for cataphoretic dip painting and connected to the negative pole of a power source (see figure), so that the metal part serves as a cathode.
  • the anode is formed by a graphite plate arranged in the lacquer solution, which is connected to the positive pole of the power source.
  • the pool itself is grounded and isolated, as you can see in the figure.
  • a water-soluble, precondensed epoxy ester system is used as the lacquer system, the ester groups being formaldehyde-reactive resin groups based on phenol, melamine or urea.
  • the dispenser systems are blocked.
  • a coating of sufficient thickness is deposited within 30 to 60 seconds, which is then baked at about 250 ° C.
  • the lacquer layer finally obtained has a thickness of approximately 20 ⁇ m.
  • a commercially available adhesive system is then applied to this baked lacquer layer, which essentially consists of halogenated polymers mixed with fillers, resins and crosslinking agents. Details of the structure of such adhesive systems can be found in the above-mentioned patents.
  • a rubber part is then applied to this adhesive system, which is firmly connected to the metal part by vulcanization.
  • the paint system with the specified structure leads to a tough, elastic, impact and abrasion-resistant coating, so that there is a significant improvement in the corrosion resistance and the mechanical strength without any impairment of the adhesiveness.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)

Claims (13)

1. Procédé de préparation d'un corps composite caoutchouc/métal qui consiste :
a) à déposer et à cuire une couche de vernis sur la partie métallique du corps composite caoutchouc/métal,
b) à revêtir la couche de vernis cuite d'un système adhésif à base de polymères halogénés,
c) à pulvériser une couche de caoutchouc, qui est vulcanisée en la partie de caoutchouc, caractérisé en ce qu'il consiste :
d) à déposer la couche de vernis par vernissage cataphorétique par immersion et.
e) à déposer directement sur la couche de vernis cuite le système adhésif constitué de polymères halogénés en mélange à des matières de charge, des résines et des agents de réticulation.
2. Procédé suivant la revendication 1, caractérisé en ce qu'il consiste à déposer la couche de vernis en une épaisseur de 15 à 25 jJ.m, notamment de 20 µm.
3. Procédé suivant l'une des revendications 1 ou 2, caractérisé en ce qu'il consiste à cuire la couche de vernis à une température de 150 à 280 °C.
4. Procédé suivant l'une des revendications 1 à 3, caractérisé en ce qu'il consiste à dégraisser la partie métallique avant le dépôt de la couche de vernis.
5. Procédé suivant l'une des revendications 1 à 4, caractérisé en ce qu'il consiste à munir la couche de vernis d'une phosphatation au zinc.
6. Procédé suivant l'une des revendications 1 à 5, caractérisé en ce qu'il consiste à utiliser, comme système de vernis, un système résine d'ester époxydique/agent liant avec un durcisseur bloqué.
7. Procédé suivant la revendication 6, caractérisé en ce qu'il consiste à cuire la couche de vernis à 150 °C.
8. Procédé suivant l'une des revendications 1 à 5, caractérisé en ce qu'il consiste à utiliser, comme système de vernis, un système résine d'ester époxydique/agent liant avec un agent donnant du formaldéhyde, notamment à base de résines d'urée ou de mélamine.
9. Procédé suivant la revendication 8, caractérisé en ce qu'il consiste à cuire la couche de vernis à 200 °C.
10. Procédé suivant l'une des revendications 1 à 5, caractérisé en ce qu'il consiste à utiliser comme système de vernis, un système d'ester époxydique soluble dans l'eau et précondensé.
11. Procédé suivant la revendication 10, caractérisé en ce qu'il consiste à utiliser, comme groupes d'ester, des groupes de résine, réagissant sur le formaldéhyde.
12. Procédé suivant la revendication 11, caractérisé en ce qu'il consiste à utiliser des groupes de résines à base de phénol, de mélamine ou d'urée.
13. Procédé suivant l'une des revendications 10 à 12, caractérisé en ce qu'il consiste à utiliser des systèmes d'ester époxydique solubles dans l'eau et précondensés avec des systèmes donneurs bloqués.
EP81110336A 1980-12-19 1981-12-11 Procédé pour fabriquer une structure composite caoutchouc-métal Expired EP0054861B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803047992 DE3047992A1 (de) 1980-12-19 1980-12-19 Verfahren zur herstellung eines lackueberzuges auf dem metallteil eines gummi/metall-verbundteils
DE3047992 1980-12-19

Publications (2)

Publication Number Publication Date
EP0054861A1 EP0054861A1 (fr) 1982-06-30
EP0054861B1 true EP0054861B1 (fr) 1986-08-20

Family

ID=6119670

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81110336A Expired EP0054861B1 (fr) 1980-12-19 1981-12-11 Procédé pour fabriquer une structure composite caoutchouc-métal

Country Status (4)

Country Link
EP (1) EP0054861B1 (fr)
CA (1) CA1148896A (fr)
DE (2) DE3047992A1 (fr)
ES (1) ES508091A0 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4135188A1 (de) * 1991-10-24 1993-04-29 Lucas Ind Plc Verbundkoerper und verfahren zum herstellen eines solchen
EP0786336A2 (fr) 1996-01-29 1997-07-30 Firma Carl Freudenberg Procédé pour fabriquer un article en caoutchouc et métal
US6379752B1 (en) 1997-12-13 2002-04-30 Henkel Kommanditgesellschaft Auf Aktien Rubber-metal composite
DE102005016607B3 (de) * 2005-04-11 2006-10-19 Trelleborg Automotive Technical Centre Gmbh Vorrichtung zur Dämpfung von Schwingungen an einer Kurbelwelle sowie Verfahren zur Herstellung einer derartigen Vorrichtung

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19515234A1 (de) * 1995-04-28 1996-10-31 Henkel Kgaa Metallteile mit einer Korrosionsschutz-Schicht
DE19640180C2 (de) * 1996-09-30 1999-07-01 Freudenberg Carl Fa Verfahren zur Herstellung eines Gummi-Metall-Teils und Verwendung des Verfahrens
CN110565149B (zh) * 2019-08-12 2021-02-09 东风商用车有限公司 一种带橡胶金属件的防腐方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4079168A (en) * 1976-11-01 1978-03-14 Lord Corporation Rubber-metal composite structures having improved resistance to corrosion

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1526244A (fr) * 1967-04-13 1968-05-24 Vernis Bouvet Soc D Procédé de revêtement sélectif par électrophorèse d'un support conducteur de l'électricité
US4049168A (en) * 1975-09-24 1977-09-20 Milliken Research Corporation Tension equalizer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4079168A (en) * 1976-11-01 1978-03-14 Lord Corporation Rubber-metal composite structures having improved resistance to corrosion

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4135188A1 (de) * 1991-10-24 1993-04-29 Lucas Ind Plc Verbundkoerper und verfahren zum herstellen eines solchen
EP0786336A2 (fr) 1996-01-29 1997-07-30 Firma Carl Freudenberg Procédé pour fabriquer un article en caoutchouc et métal
DE19603060A1 (de) * 1996-01-29 1997-08-07 Freudenberg Carl Fa Verfahren zur Herstellung eines Gummi-Metall-Teils
US6379752B1 (en) 1997-12-13 2002-04-30 Henkel Kommanditgesellschaft Auf Aktien Rubber-metal composite
DE102005016607B3 (de) * 2005-04-11 2006-10-19 Trelleborg Automotive Technical Centre Gmbh Vorrichtung zur Dämpfung von Schwingungen an einer Kurbelwelle sowie Verfahren zur Herstellung einer derartigen Vorrichtung

Also Published As

Publication number Publication date
DE3175180D1 (en) 1986-09-25
ES8301288A1 (es) 1982-12-01
EP0054861A1 (fr) 1982-06-30
DE3047992A1 (de) 1982-07-15
CA1148896A (fr) 1983-06-28
ES508091A0 (es) 1982-12-01

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