Method for electrostatically scattering an abrasive grain

Patent metadata

Field	Value
Publication number	US-11420305-B2
Application number	US-201816488842-A
Country	US
Kind code	B2
Filing date	Mar 16, 2018
Priority date	Mar 20, 2017
Publication date	Aug 23, 2022
Grant date	Aug 23, 2022

Abstract

A method for electrostatically scattering an abrasive grain includes applying at least one electro-conductive material to the abrasive grain. The electro-conductive material is in the form of at least one organic compound.

First claim

The invention claimed is:

1. A method for applying a plurality of abrasive grains on a surface, comprising;
applying at least one ionic liquid to each of the plurality of abrasive grains to substantially coat the abrasive grain;
wherein the at least one ionic liquid is an organic compound; and
then electrostatically applying the coated plurality of abrasive grains to the surface.

2. A method for applying a plurality of abrasive grains on a surface, comprising;
applying an intrinsically conductive polymer to each of the plurality of abrasive grains to substantially coat the abrasive grain;
wherein the intrinsically conductive polymer is an organic compound; and
then electrostatically applying the coated plurality of abrasive grains to the surface.

3. The method as claimed in claim 1 , wherein a mass proportion of the at least one organic compound applied to each of the plurality of abrasive grains is less than 5% of a total mass of the abrasive grain covered with the at least one organic compound.

4. The method as claimed in claim 1 , wherein a maximum layer thickness of the at least one organic compound applied to each of the plurality of abrasive grains is less than thirty microns.

5. The method as claimed in claim 1 , wherein the step of electrostatically applying includes accelerating each of said plurality of grains toward the surface in an electric field.

6. The method as claimed in claim 1 , wherein the step of electrostatically applying includes aligning each of said plurality of grains on the surface in a predetermined orientation.

7. The method as claimed in claim 6 , wherein each of said plurality of grains has at least one pointed edge, and said predetermined orientation is with one of said at least one pointed edge pointing away from surface.

8. The method as claimed in claim 1 , wherein said organic compound includes at least one organic salt.

9. The method as claimed in claim 1 , wherein said at least one ionic liquid includes 1-Butyl-3-methylimidazolium tetrafluoroborate.

10. The method as claimed in claim 2 , wherein said intrinsically conductive polymer includes poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PS).

11. The method as claimed in claim 2 , wherein a mass proportion of the at least one organic compound applied to each of the plurality of abrasive grains is less than 5% of a total mass of the abrasive grain covered with the at least one organic compound.

12. The method as claimed in claim 2 , wherein a maximum layer thickness of the at least one organic compound applied to each of the plurality of abrasive grains is less than thirty microns.

13. The method as claimed in claim 12 , wherein the step of electrostatically applying includes accelerating each of said plurality of grains toward the surface in an electric field.

14. The method as claimed in claim 2 , wherein the step of electrostatically applying includes aligning each of said plurality of grains on the surface in a predetermined orientation.

15. The method as claimed in claim 2 , wherein each of said plurality of grains has at least one pointed edge, and said predetermined orientation is with one of said at least one pointed edge pointing away from surface.

16. The method as claimed in claim 2 , wherein said organic compound includes at least one organic salt.

Assignees

• Bosch Gmbh Robert

Inventors

• Huber Johannes

Classifications

• B24D3/08

  for close-grained structure, e.g. using metal with low melting point · CPC title

• H01B1/127 Primary

  comprising five-membered aromatic rings in the main chain, e.g. polypyrroles, polythiophenes · CPC title

• B24D3/344 Primary

  the bonding agent being organic · CPC title

• H01B1/122

  Ionic conductors · CPC title

• B24D3/34

  characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties · CPC title