THERMAL INSULATING PAPER AND METHOD FOR PRODUCING A THERMAL INSULATING PAPER

Abstract

A method for producing a thermal insulating paper includes producing the thermal insulating paper in a classic paper production process from a raw material having materials with good thermal properties and materials with electrically insulating properties in a paper matrix. A thermal insulating paper produced using the above method may include inorganic fibers, electrical insulators, aramid fibers, or binders.

Claims

1. A method for producing a thermal insulating paper, wherein the thermal insulating paper is produced in a classic paper production process from a raw material comprising materials with good thermal properties and materials with electrically insulating properties in a paper matrix.

2. The method of claim 1, wherein the thermal insulating paper is thermally fixed.

3. The method of claim 1, wherein the thermal insulating paper is provided with a coating.

4. The method of claim 1, wherein the thermal insulating paper is folded, pressed, punched, or deformed.

5. A thermal insulating paper produced using the method of claim 1, comprising inorganic fibers.

6. The thermal insulating paper of claim 5, further comprising electrical insulators.

7. The thermal insulating paper of claim 5, wherein the thermal insulating paper comprises aramid fibers.

8. The thermal insulating paper of claim 5, wherein the thermal insulating paper comprises binders.

9. The thermal insulating paper of claim 5, wherein the thermal insulating paper comprises a thickness of one hundred to three hundred micrometers.

10. The thermal insulating paper of claim 5, wherein the thermal insulating paper is self-adhesive.

11. The thermal insulating paper of claim 3 wherein the coating is an adhesive layer.

12. The thermal insulating paper of claim 5 wherein the inorganic fibers are basalt fibers.

13. The thermal insulating paper of claim 6 wherein the electrical insulators are selected from the group consisting of boron nitride, aluminum nitride, mullite and combinations thereof.

14. The thermal insulating paper of claim 8 wherein the binders are selected from the group consisting of phenolic resin, acrylate and combinations thereof.

Description

DETAILED DESCRIPTION

[0018] Further advantages, features and details of the present disclosure emerge from the following description, in which various exemplary embodiments are described in detail.

[0019] The disclosed thermal insulating paper is manufactured in a classic paper manufacturing process. The method permits a wide variation in terms of the materials used to optimize the electrical and thermal properties. In addition, the production of the thermal insulating paper in the classic paper manufacturing process is inexpensive. In addition, the claimed thermal insulating paper offers advantages in terms of the workability and modifiability thereof with regard to an assembly concept in the manufacture of electric motors.

[0020] By using electrically insulating but thermally conductive material, the properties can be changed in such a way that they meet the increased requirements. In terms of implementation, this means that the recipe and the manufacturing process are adapted to the changed requirements.

[0021] Here, inorganic fibers, such as basalt, are used to improve the mechanical and thermal properties, and these are processed with materials that have a high thermal conductivity but are electrical insulators, such as boron nitride, aluminum nitride, or mullite. To ensure good strength and fixation of these substances in the paper matrix, aramid fibers and binders, such as phenolic resin and/or acrylates, are used.

[0022] Due to the fixation of the insulation via a thermal work step, additional substances are added to the recipe for this purpose.

[0023] The paper production can also be combined with various coating methods, if necessary, to adjust the mechanical, electrical or processing behavior or the properties of the thermal insulating paper.