METHOD FOR COATING AN INSULATION COMPONENT AND INSULATION COMPONENT

• US 20140190958A1
• Filed: 07/19/2012
• Published: 07/10/2014
• Est. Priority Date: 08/08/2011
• Status: Abandoned Application

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Koch, Andreas, Lenz, Eberhard
• Application Number:
  US14/237,269
• Publication Number:
  US 20140190958A1
• Time in Patent Office: Days
• US Class Current: 219/548
• CPC Class Codes: B05D 1/36 Successively applying liquids or other fluent materials, e.g. without intermediate treatment
• CPC Class Codes: B05D 3/0254 After-treatment
• CPC Class Codes: B05D 3/144 of polymeric substrates
• CPC Class Codes: C23C 18/04 Pretreatment of the material to be coated C23C18/06 takes precedence
• CPC Class Codes: C23C 18/1208 Oxides, e.g. ceramics
• CPC Class Codes: C23C 18/1212 Zeolites, glasses
• CPC Class Codes: C23C 18/1216 Metal oxides C23C18/1212 takes precedence
• CPC Class Codes: C23C 18/1225 Deposition of multilayers of inorganic material
• CPC Class Codes: C23C 18/1233 Organic substrates
• CPC Class Codes: C23C 18/1254 Sol or sol-gel processing
• CPC Class Codes: H01B 13/22 Sheathing; Armouring; Screening; Applying other protective layers H01B13/32 takes precedence
• CPC Class Codes: H01B 19/04 Treating the surfaces, e.g. applying coatings
• CPC Class Codes: H01B 3/427 Polyethers
• CPC Class Codes: H01B 7/292 using material resistant to heat
• CPC Class Codes: H05B 3/18 the conductor being embedded in an insulating material

Abstract

The invention relates to a method for coating an insulation component (10), having PEEK, for insulating an electrically conductive heating cable (100) comprising the following steps: 1.) at least sectionally treating the surface of the insulation component (10) with at least one cold plasma flame, and 2.) applying at least one protective layer (20) to the treated surface of the insulation component (10).

Claims

1-15. -15. (canceled)

16. A method for coating an insulation component, comprising PEEK (polyether ether ketone), for the insulation of an electrically conductive heating cable, comprising:

treating at least portions of the surface of the insulation component with a cold plasma flame; and

applying a protective layer to the treated surface of the insulation component.

17. The method as claimed in claim 16, wherein the protective layer is applied as a sol-gel layer by a sol-gel method.

18. The method as claimed in claim 17, wherein a main component of the sol-gel solution after drying thereof is SiO₂ or TiO₂.

19. The method as claimed in claim 16, wherein the protective layer is applied in such a way that a layer thickness of at least 2 μ

m is achieved.

20. The method as claimed in claim 16, wherein applying the protective layer is carried out at least twice so that the layer thickness of the protective layer increases.

21. The method as claimed in claim 16, wherein after the application of the protective layer, there follows a drying step for the protective layer, which is carried out at a temperature above room temperature.

22. The method as claimed in claim 16, where the drying step for the protective layer is carried out at between 100°

C. and 200°

C.

23. The method as claimed in claim 16, wherein the protective layer is applied as an adhesive directly on the surface of the insulation component.

24. The method as claimed in claim 23, wherein after the application of the protective layer in the form of the adhesive, a curing step is carried out in such a way that the adhesive becomes dimensionally stable without already curing completely.

25. The method as claimed in claim 16, wherein the coating of an insulation component includes a hollow-cylindrical form.

26. The method as claimed in claim 25, wherein the hollow-cylindrical form includes a first length that is less than a second length of the electrical heating cable.

27. The method as claimed in claim 16, wherein the fitting on the electrical heating cable is carried out after the treatment of the surface of the insulation component with a cold plasma flame and before the application of the protective layer to the treated surface of the insulation component.

28. The method as claimed in claim 16, wherein the treatment of the surface and the application of the protective layer is carried out around the insulation component.

29. The method as claimed in claim 16, the treatment of the surface of the insulation component with a cold plasma flame is carried out with a ring surrounding the insulation component.

30. The method as claimed in claim 16, wherein at least two protective layers, in particular all of the protective layers, consist of the same material.

32. The insulation component as claimed in claim 31, wherein the protective layer is produced by the method according to claim 16.

31. An insulation component for the insulation of an electrically conductive heating cable, comprising:

PEEK (polyether ether ketone),

wherein at least portions of the surface of the insulation component are provided with a protective layer.

33. An electrically conductive heating cable, insulated by an insulation component according to claim 31.