Pore inducer and porous abrasive form made using the same

Patent metadata

Field	Value
Publication number	US-11078345-B2
Application number	US-201716099728-A
Country	US
Kind code	B2
Filing date	May 11, 2017
Priority date	May 20, 2016
Publication date	Aug 3, 2021
Grant date	Aug 3, 2021

Abstract

Various embodiments disclosed relate to pore inducers and porous abrasive forms made using the same. In various embodiments, the present invention provides a method of forming a porous abrasive form including heating an abrasive composition including pore inducers to form the porous abrasive form. During the heating the pore inducers in the porous abrasive form reduce in volume to form induced pores in the porous abrasive form.

First claim

What is claimed is:

1. A method of forming a porous vitreous abrasive form, the method comprising:
molding a pore inducer staring material composition to form a plurality of hollow glass filler pore inducers with a 3D geometric shape and a size, wherein each of the plurality of pore inducers have the same 3D geometric shape and size;
heating an abrasive composition comprising pore inducers comprising the molded hollow glass filler pore inducers, to form the porous vitreous abrasive form; and
wherein during the heating the pore inducers in the porous vitreous abrasive form reduce in volume to form induced pores in the porous vitreous abrasive form, wherein the induced pores comprise a shape similar to the 3D geometric shape.

2. The method of claim 1 , wherein the pore inducers comprise a heat-volatile, heat-decomposable, or heat-pyrolizable component.

3. The method of claim 1 , wherein the abrasive composition, further comprises a secondary pore inducer.

4. The method of claim 1 , wherein the porous vitreous abrasive form has a density of about 1.3 g/cm 3 to about 2.7 g/cm 3 .

5. The method of claim 1 , wherein the pore inducers are tetrahedrons, square pyramids, hexagonal pyramids, cubes, cuboids, triangular prisms, octahedrons, pentagonal prisms, hexagonal prisms, dodecahedrons, spheres, ellipsoids, icosahedron, cones, cylinders, sections of any one thereof or any combination thereof.

6. The method of claim 1 , wherein during the heating one or more components of the pore inducers melt or become flowable.

7. The method of claim 1 , wherein the induced pores approximately correspond in size to that of the molded pore inducers in the abrasive composition prior to the heating.

8. The method of claim 7 , wherein the induced pores have a volume that is about 50% to about 100% of the volume of the molded pore inducers in the abrasive composition prior to the heating.

9. The method of claim 7 , wherein the induced pores have a volume that is about 70% to about 95% of the volume of the molded pore inducers in the abrasive composition prior to the heating.

Assignees

• 3M Innovative Properties Co

Inventors

• Goers Brian D
• Lukowski Mark A
• Flaschberger Walter
• Thurber Ernest L
• Gozum John E

Classifications

• B24D3/18 Primary

  for porous or cellular structure · CPC title

• B24D3/10

  for porous or cellular structure, e.g. for use with diamonds as abrasives · CPC title

• C08J2201/042

  Elimination of an organic solid phase · CPC title

• C08J2201/0442

  the inorganic phase being a metal, its oxide or hydroxide · CPC title

• C08J2205/10

  Rigid foams · CPC title