EP0054861A1 - 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
EP0054861A1
EP0054861A1 EP81110336A EP81110336A EP0054861A1 EP 0054861 A1 EP0054861 A1 EP 0054861A1 EP 81110336 A EP81110336 A EP 81110336A EP 81110336 A EP81110336 A EP 81110336A EP 0054861 A1 EP0054861 A1 EP 0054861A1
Authority
EP
European Patent Office
Prior art keywords
coating
baked
lacquer
rubber
metal part
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.)
Granted
Application number
EP81110336A
Other languages
German (de)
English (en)
Other versions
EP0054861B1 (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
Metzeler Kautschuk AG
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, Metzeler Kautschuk AG 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

    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D13/00Electrophoretic coating characterised by the process

Definitions

  • the invention relates to a method for producing a corrosion protection; paint coating to be burned on the metal part of a rubber / metal composite part.
  • a rubber part is then applied to this adhesive system, which is converted into rubber by vulcanization and firmly connected to the metal.
  • the baked paint layer provides the same adhesive strength as the usual metal / rubber connection; however, the adhesion to the burned-on lacquer layer is more resistant to rusting and infiltration by aqueous media, salt solutions, etc., as is particularly important for the use of such rubber / metal composite bodies in motor vehicles.
  • the lacquer layer baked at high temperatures is also sufficiently resistant to mechanical stress, such as occurs when cleaning rubber overflows with rotating brushes.
  • a disadvantage of the known method is that a uniform coating of paint cannot be achieved by spraying on the paint system; this applies in particular to the hard-to-reach areas of a metal part, as they occur in particular in the case of more complicated rubber / metal composite parts.
  • the invention is therefore based on the object of providing a method for producing a lacquer coating of the type specified, in which the disadvantages mentioned above are avoided.
  • lacquer coatings applied by electrocoating in particular cataphoretic immersion coating, have a very uniform layer thickness over the entire surface of the metal part.
  • the high grip of the cataphoretic dip coating ensures that the layer of 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 retain the teaching.
  • 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 workpiece to be coated forms the cathode, that is to say the negative pole, while additional anodes made of a special material, for example graphite, which are usually hung in dialysis boxes, serve as the positive pole; the pool itself is grounded and isolated.
  • additional anodes made of a special material for example graphite, which are usually hung in dialysis boxes, serve as the positive pole; the pool itself is grounded and isolated.
  • cataphoretic dip painting a water-insoluble lye is released in the boundary layer of the cathode, i.e. the workpiece.
  • the coagulated paint adheres to the cathode, i.e. to the workpiece.
  • the polarity reversed compared to the anaphoretic dip coating brings about a major advantage of the cataphoretic 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, no acidic area arises in the boundary layer, so that the generally in the pretreatment brought 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 provided with zinc phosphating with a passive rinse. 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 coating and connected to the negative pole of a power source (see FIG. 2), 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 can be seen in Figure 2.
  • a water-soluble, precondensed epoxy ester system is used as the paint 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 about 20 / u 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 business 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 substantial improvement in the corrosion resistance and the mechanical strength without any impairment of the adhesiveness.

Landscapes

  • 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)
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 true EP0054861A1 (fr) 1982-06-30
EP0054861B1 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
DE19515234A1 (de) * 1995-04-28 1996-10-31 Henkel Kgaa Metallteile mit einer Korrosionsschutz-Schicht
DE19640180A1 (de) * 1996-09-30 1998-04-09 Freudenberg Carl Fa Verfahren zur Herstellung eines Gummi-Metall-Teils
EP0786336A3 (fr) * 1996-01-29 1998-09-02 Firma Carl Freudenberg Procédé pour fabriquer un article en caoutchouc et métal
CN110565149A (zh) * 2019-08-12 2019-12-13 东风商用车有限公司 一种带橡胶金属件的防腐方法

Families Citing this family (3)

* 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
DE19755421A1 (de) 1997-12-13 1999-06-17 Henkel Kgaa Gummi-Metall-Verbund
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

Citations (3)

* 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
DE2748686A1 (de) * 1976-11-01 1978-05-11 Lord Corp Gummi-metallstruktur mit erhoehter korrosionsfestigkeit

Patent Citations (3)

* 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
DE2748686A1 (de) * 1976-11-01 1978-05-11 Lord Corp Gummi-metallstruktur mit erhoehter korrosionsfestigkeit

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Chemical Engineering, Band 78, Nr. 13, 14. Juni 1971, seiten 114-118 M. WISMER et al.: "Make the Part the Cathode: Key to Resistant Coatings" *
WILLIBALD MACHU: "Elektrotauchlackierung", 1974, seiten 3, 4, 101, 172 Verlag Chemie *

Cited By (7)

* 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
EP0786336A3 (fr) * 1996-01-29 1998-09-02 Firma Carl Freudenberg Procédé pour fabriquer un article en caoutchouc et métal
DE19640180A1 (de) * 1996-09-30 1998-04-09 Freudenberg Carl Fa Verfahren zur Herstellung eines Gummi-Metall-Teils
EP0832915A3 (fr) * 1996-09-30 1998-08-12 Firma Carl Freudenberg Procédé de fabrication de pièces en caoutchouc et métal
DE19640180C2 (de) * 1996-09-30 1999-07-01 Freudenberg Carl Fa Verfahren zur Herstellung eines Gummi-Metall-Teils und Verwendung des Verfahrens
CN110565149A (zh) * 2019-08-12 2019-12-13 东风商用车有限公司 一种带橡胶金属件的防腐方法
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

Also Published As

Publication number Publication date
DE3175180D1 (en) 1986-09-25
EP0054861B1 (fr) 1986-08-20
ES8301288A1 (es) 1982-12-01
DE3047992A1 (de) 1982-07-15
CA1148896A (fr) 1983-06-28
ES508091A0 (es) 1982-12-01

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