DE3425206A1 - Corrosion protection having a plurality of layers of elastomer blends - Google Patents

Corrosion protection having a plurality of layers of elastomer blends

Info

Publication number
DE3425206A1
DE3425206A1 DE19843425206 DE3425206A DE3425206A1 DE 3425206 A1 DE3425206 A1 DE 3425206A1 DE 19843425206 DE19843425206 DE 19843425206 DE 3425206 A DE3425206 A DE 3425206A DE 3425206 A1 DE3425206 A1 DE 3425206A1
Authority
DE
Germany
Prior art keywords
layer
corrosion protection
rubber
thickness
ethylene
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.)
Ceased
Application number
DE19843425206
Other languages
German (de)
Inventor
Lothar Dipl.-Ing. 5093 Burscheid Knäpper
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.)
Knaepper Lothar Dipl-Ing 4714 Selm De
Original Assignee
Clouth Gummiwerke Ag 5000 Koeln
Clouth Gummiwerke 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 Clouth Gummiwerke Ag 5000 Koeln, Clouth Gummiwerke AG filed Critical Clouth Gummiwerke Ag 5000 Koeln
Priority to DE19843425206 priority Critical patent/DE3425206A1/en
Publication of DE3425206A1 publication Critical patent/DE3425206A1/en
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08—Anti-corrosive paints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/52—Two layers
    • B05D7/54—No clear coat specified
    • B05D7/546—No clear coat specified each layer being cured, at least partially, separately
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/56—Three layers or more
    • B05D7/57—Three layers or more the last layer being a clear coat
    • B05D7/576—Three layers or more the last layer being a clear coat each layer being cured, at least partially, separately
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2530/00—Rubber or the like

Abstract

A flexible corrosion protection for containers, equipment, pipes and the like has a plurality of layers (2, 3) of elastomer blends and the first layer (2) applied to the object (1) to be protected comprises soft rubber, for example butyl rubber, polycholoroprene rubber, ethylene-propylene-diene rubber, ethylene-acrylate rubber or chlorosulphonated polyethylene, whereas the second layer (3) applied to the first layer (2) is formed by a self-vulcanising fluoroelastomer solution. <IMAGE>

Description

Mehrere Schichten aus Elastomermischungen aufweisender KorrosionsschutzCorrosion protection with several layers of elastomer mixtures

Die Erfindung betrifft einen mehrere Schichten aus Elastomermischungen aufweisenden elastischen Korrosionsschutz für Behälter, Apparate, Rohre u. dgl..The invention relates to an elastic corrosion protection comprising several layers of elastomer mixtures for containers, apparatus, pipes, etc.

Es ist bekannt Behälter, Apparate, Rohre u. dgl. mit einem elastischen Korrosionsschutz zu versehen, der aus mehreren Schichten aus Elastomermischungen gebildet ist. Bei den dabei verwendeten Kautschuken liegt die obere Einsatztemperatur für den daraus hergestellten Korrosionsschutz unterhalb der oberen Dauertemperaturbeständigkeit der Basiskautschuke. Da bei den meist wässrigen Betriebsmedien die Wasserdampfdiffusion zur Blasenbildung an dem Korrosionsschutz führt, werden als Korrosionsschutz bereits Fluorkautschuke verwendet, die neben einer breiten chemischen Beständigkeit eine sehr niedrige Wasserdampfdiffusion sr a te aufweisen. Die wesentlichen Nachteile der Fluorkautschuke sind in der schlechten Konfektionski ebrigkeit und der geringen Beständigkeit der bekannten Bindemittel für Fluorkautschuke zu sehen. Darüber hinaus ist der Preis von Fluorkautschuken sehr hoch, so daß es sich bereits aus diesem Grunde verbietet, einen Korrosionsschutz aus Fluorkautschuk mit einer Dicke von mehreren Millimetern herzustellen. Für viele gegen Korrosion zu schützende Bauteile ist aber ein Korrosionsschutz von geringer Dicke nicht brauchbar, weil er keinen ausreichenden Schutz gegen Beschädigungen bietet, z. B. bei häufiger Begehung durch Inspektionspersonal oder durch Reinigungsmaßnahmen.It is known containers, apparatus, pipes and the like with a to provide elastic corrosion protection, which is formed from several layers of elastomer mixtures. Both The rubbers used for this are the upper operating temperature for the corrosion protection produced from them below the upper long-term temperature resistance of the Base rubbers. Since with the mostly aqueous operating media the water vapor diffusion leads to the formation of bubbles on the Corrosion protection leads, fluororubbers are already used as corrosion protection, in addition to a broad chemical resistance have a very low water vapor diffusion rate. The main drawbacks the fluororubbers are in the bad Konfektionski ebrigkeit and the low resistance of the known See binders for fluororubbers. In addition, the price of fluororubbers is very high, so it is For this reason alone, a corrosion protection from fluorinated rubber with a thickness of several millimeters. For many components to be protected against corrosion, however, there is corrosion protection of small thickness not usable because it does not offer sufficient protection against damage, e.g. B. in the case of frequent inspections by inspection personnel or through cleaning measures.

- 2 -- 2 -

• it- • it-

Der Erfindung liegt die Aufgabe zugrunde, die vorgenannten Nachteile zu vermeiden und einen Korrosionsschutz zu schaffen, der thermisch und chemisch beständig ist und preiswert hergestellt werden kann. Diese Aufgabe wird durch die im Anspruch 1 angegebene Erfindung gelöst.The invention is based on the object of avoiding the aforementioned disadvantages and providing protection against corrosion to create that is thermally and chemically resistant and can be manufactured inexpensively. This task is carried out by the invention specified in claim 1 solved.

Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen beschrieben.Advantageous further developments of the invention are described in the subclaims.

1Ö Bei dem erfindungsgemäßen Korrosionsschutz haftet die Fluorelastomerschicht fest auf der Schicht aus Weichgummi. Hierdurch wird die thermische Beständigkeit des Korrosionsschutzes derart gesteigert, daß er auch bei Betriebstemperaturen bis zu 150 0C, wie sie in Rauchgaskanälen auftreten können, eingesetzt werden.In the case of the corrosion protection according to the invention, the fluoroelastomer layer adheres firmly to the layer made of soft rubber. This increases the thermal resistance of the corrosion protection in such a way that it can also be used at operating temperatures of up to 150 ° C., as can occur in flue gas ducts.

In der Zeichnung ist ein Ausführungsbeispiel des erfindungsgemäßen Korrosionsschutzes dargestellt. Hierbei ist auf den zu schützenden Gegenstand 1 eine erste Schicht 2 aus Weichgummi und darüber eine zweite Schicht 3 aus einem Fluorelastomer aufgebracht.In the drawing is an embodiment of the invention Corrosion protection shown. Here, a first layer 2 is made on the object 1 to be protected Soft rubber and over it a second layer 3 made of a fluoroelastomer is applied.

Claims (6)

Ansprüche:Expectations: 1. Mehrere Schichten aus Elastomermischungen aufweisender elastischer Korrosionsschutz für Behälter, Apparate, Rohre u. dgl., dadurch gekennzeichnet, daß die erste, auf den zu schützenden Gegenstand aufgebrachte Schicht aus Weichgummi besteht, z. B. aus Butylkautschuk, Polychloroprenkautschuk, Ethylen - Propylen - Dienkautschuk, Ethylen - Acrylatkautschuk oder chlorsulfaniertem Polyethylen, während die zweite, auf die erste Schicht aufgebrachte Schicht durch eine selbstvulkanisierende Fluorelastomerlösung gebildet ist.1. Multiple layers of elastomer mixtures having elastic corrosion protection for containers, apparatus, pipes and the like, characterized in that, that the first layer applied to the object to be protected consists of soft rubber, z. B. made of butyl rubber, polychloroprene rubber, ethylene - propylene - diene rubber, ethylene - acrylate rubber or chlorosulfanated polyethylene, while the second layer applied to the first layer is formed by a self-vulcanizing fluoroelastomer solution. 2. Korrosionsschutz nach Anspruch 1, dadurch gekennzeichnet, daß die erste Schicht eine Dicke von 3 bis 8 mm und die zweite Schicht eine Dicke von 0,2 bis 1,5 mm aufweist.2. Corrosion protection according to claim 1, characterized in that that the first layer has a thickness of 3 to 8 mm and the second layer a thickness of 0.2 to 1.5 mm having. 3. Korrosionsschutz nach Anspruch 1, dadurch gekennzeichnet, daß die erste Schicht eine Dicke von etwa 5 mm und die zweite Sicht eine Dicke von 0,3 mm aufweist.3. Corrosion protection according to claim 1, characterized in that that the first layer has a thickness of about 5 mm and the second layer has a thickness of 0.3 mm. 4. Verfahren zur Herstellung eines Korrosionsschutzes nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die erste Schicht über ein Kautschukbindemittel an den zu schützenden Untergrund befestigt und anschließend eine Funkeninduktionsprüfung der ersten Schicht auf Dichtheit durchgeführt wird, daß sodann die Vulkanisation der ersten Schicht erfolgt und daß nach dem Vulkanisieren der ersten Schicht die zweite Schicht aufgebracht wird, beispielsweise im Spritzoder Streichverfahren.4. A method for producing a corrosion protection according to any one of claims 1 to 3, characterized in that that the first layer is attached to the substrate to be protected via a rubber binding agent and then a spark induction test of the first layer is carried out for leaks, that then the vulcanization of the first layer takes place and that after the vulcanization of the first layer, the second Layer is applied, for example by spraying or brushing. 5. Verfahren nach Anspruch 4» dadurch gekennzeichnet, daß die zweite Schicht in drei bis zehn Arbeitsgängen aufgebracht wird. 5. The method according to claim 4 »characterized in that the second layer is applied in three to ten operations. 6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß die zweite Schicht in fünf Arbeitsgängen aufgebracht wird.6. The method according to claim 5, characterized in that the second layer is applied in five operations will.
DE19843425206 1984-07-09 1984-07-09 Corrosion protection having a plurality of layers of elastomer blends Ceased DE3425206A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19843425206 DE3425206A1 (en) 1984-07-09 1984-07-09 Corrosion protection having a plurality of layers of elastomer blends

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843425206 DE3425206A1 (en) 1984-07-09 1984-07-09 Corrosion protection having a plurality of layers of elastomer blends

Publications (1)

Publication Number Publication Date
DE3425206A1 true DE3425206A1 (en) 1986-01-16

Family

ID=6240172

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19843425206 Ceased DE3425206A1 (en) 1984-07-09 1984-07-09 Corrosion protection having a plurality of layers of elastomer blends

Country Status (1)

Country Link
DE (1) DE3425206A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997031069A1 (en) * 1996-02-22 1997-08-28 Shaw Industries Ltd. Corrosion preventing covering

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB821780A (en) * 1957-01-22 1959-10-14 Goodyear Tire & Rubber Improved tank linings
US4347277A (en) * 1978-11-03 1982-08-31 General Signal Corporation Corrosion resistant coated articles which include an intermediate coating layer of a thermosetting polymer and non-siliceous filler
US4374874A (en) * 1980-08-08 1983-02-22 T. C. Manufacturing Company, Inc. Corrosion-resistant coating composition containing hollow microballoons

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB821780A (en) * 1957-01-22 1959-10-14 Goodyear Tire & Rubber Improved tank linings
US4347277A (en) * 1978-11-03 1982-08-31 General Signal Corporation Corrosion resistant coated articles which include an intermediate coating layer of a thermosetting polymer and non-siliceous filler
US4374874A (en) * 1980-08-08 1983-02-22 T. C. Manufacturing Company, Inc. Corrosion-resistant coating composition containing hollow microballoons

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997031069A1 (en) * 1996-02-22 1997-08-28 Shaw Industries Ltd. Corrosion preventing covering

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8127 New person/name/address of the applicant

Owner name: KNAEPPER, LOTHAR, DIPL.-ING., 4714 SELM, DE

8131 Rejection