ABRASIVE ARTICLE INCLUDING A CORE AND A BONDED ABRASIVE BODY

• US 20150375367A1
• Filed: 06/29/2015
• Published: 12/31/2015
• Est. Priority Date: 06/29/2014
• Status: Abandoned Application

• Current Assignee: Saint-Gobain Abrasives Incorporated (Compagnie De Saint-Gobain), Saint-Gobain Abrasifs (Compagnie de Saint-Gobain SA)
• Original Assignee: Saint-Gobain Abrasives Incorporated (Compagnie De Saint-Gobain), Saint-Gobain Abrasifs (Compagnie de Saint-Gobain SA)
• Inventors: UPADHYAY, Rachana, RAMANATH, Srinivasan, PYTEL, Rachel Z., SIVASUBRAMANIAN, Shivashankar, LI, Jiashu, BOTTIGLIERI, Stephen, DUMAS, Steven W., GILLESPIE, John E., SMITH, Robert N.
• Application Number:
  US14/754,487
• Publication Number:
  US 20150375367A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B24D 3/007 the constituent being used as bonding agent between different parts of an abrasive tool
• CPC Class Codes: B24D 3/28 Resins or natural or synthetic macromolecular compounds B24D3/22 takes precedence

Abstract

An abrasive article including a core including an organic material and a first bonded abrasive body integrally bonded directly to the core, the first bonded abrasive body having abrasive particles contained within a bond material and the abrasive article having a bonding factor of at least about 60%.

Claims

1. An abrasive article comprising:

a core comprising an organic material;

a first bonded abrasive body integrally bonded directly to the core, the first bonded abrasive body comprising abrasive particles contained within a bond material; and

a bonding factor of at least about 60%.

2. The abrasive article of claim 1, wherein the first bonded abrasive body is integrally bonded directly to a peripheral surface of the core, and wherein an interface between the first bonded abrasive body and core comprises not greater than about 5% of the adhesive or the cementing compound for the total surface area of the interface.

3. The abrasive article of claim 1, wherein the core comprises a liner overlying at least a portion of the surface defining the opening, wherein the liner overlies essentially the entire surface defining the opening, wherein the liner comprises a material selected from the group consisting of inorganic materials, organic materials, and a combination thereof, wherein the liner comprises a metal or metal alloy.

4. The abrasive article of claim 1, wherein the core comprises a liner overlying at least a portion of the surface defining the opening, wherein the liner has a heat capacity greater than a heat capacity of the material of the core, and wherein the liner has a heat capacity less than a heat capacity of the material of the core.

5. The abrasive article of claim 1, wherein the core consists essentially of the organic material, wherein the organic material comprises a polymer, wherein the organic material comprises a polymeric material selected from the group consisting of an epoxy polymer, a phenoxy polymer, a polyurea, a polyimide, a polycyanate, a polyurethane, a melamine polymer, a polyester, or foamed structures of the same, or any combination thereof.

6. The abrasive article of claim 1, wherein the core comprises a linear coefficient of thermal expansion (CTE) of at least about 15 microns/(m °

C.), and not greater than about 70 microns/(m °

C.).

7. The abrasive article of claim 1, wherein the core comprises a first filler material, a second filler material distinct from the first filler material and a third filler material distinct from the second filler material.

8. The abrasive article of claim 7, wherein the core comprises a ratio (W1/W3) of at least about 30, wherein W1 represents a content of a first filler material within the core in weight percent for a total weigh of the core and W3 represents a content of a third filler material within the core in weight percent for a total weigh of the core.

9. The abrasive article of claim 7, wherein the core comprises a ratio (W1/W2) of at least about 10, wherein W1 represents a content of a first filler material within the core in weight percent for a total weigh of the core and W2 represents a content of a second filler material within the core in weight percent for a total weigh of the core.

10. The abrasive article of claim 7, wherein the core comprises a ratio (W2/W3) of at least about 2, wherein W2 represents a content of a second filler material within the core in weight percent for a total weigh of the core and W3 represents a content of a third filler material within the core in weight percent for a total weigh of the core.

11. The abrasive article of claim 7, wherein the first filler material comprises not greater than about 65 wt % and at least about 55 wt % for a total weight of the core, wherein the second filler material comprises not greater than about 7 wt % and at least about 2 wt % for a total weight of the core, and wherein the third filler material comprises at least about 0.1 wt % and not greater than about 1 wt % for a total weight of the core.

12. An abrasive article comprising

a first bonded abrasive body comprising:

a bond material; and

abrasive particles contained within the bond material; and

a core comprising an organic material and integrally bonded to the first bonded abrasive body, the core having a monolithic body including a cylindrical shaped defined by a diameter (d), a circumference (C), and a height (h), wherein the height is at least about 3 inches (7.6 cm); and

a bonding factor of at least about 60%.

13. The abrasive article of claim 12, wherein the first bonded abrasive body comprises a filler contained in a bond material, wherein the filler comprises a material selected from the group of materials consisting of zirconia, silica, titania, and a combination thereof.

14. The abrasive article of claim 12, wherein the core comprises a material with a CTE of at least about 25 μ

m/m°

C.

15. The abrasive article of claim 12, wherein the core comprises a linear coefficient of thermal expansion (CTEba) and the bonded abrasive body comprises a linear coefficient of thermal expansion (CTEc), and wherein the core and the bonded abrasive body comprise a difference in the coefficients of thermal expansion (Δ

CTE) defined by the equation [(CTEba−

CTEc)/CTEba]×

100% of not greater than about 30%.

16. The abrasive article of claim 12, wherein the core comprises a first filler material, a second filler material distinct from the first filler material and a third filler material distinct from the second filler material.

17. The abrasive article of claim 16, wherein the core comprises a ratio (W1/W3) of at least about 30, wherein W1 represents a content of a first filler material within the core in weight percent for a total weigh of the core and W3 represents a content of a third filler material within the core in weight percent for a total weigh of the core.

18. The abrasive article of claim 16, wherein the core comprises a ratio (W1/W2) of at least about 10, wherein W1 represents a content of a first filler material within the core in weight percent for a total weigh of the core and W2 represents a content of a second filler material within the core in weight percent for a total weigh of the core.

19. The abrasive article of claim 16, wherein the core comprises a ratio (W2/W3) of at least about 2, wherein W2 represents a content of a second filler material within the core in weight percent for a total weigh of the core and W3 represents a content of a third filler material within the core in weight percent for a total weigh of the core.

20. The abrasive article of claim 16, wherein the first filler material comprises not greater than about 65 wt % and at least about 55 wt % for a total weight of the core, wherein the second filler material comprises not greater than about 7 wt % and at least about 2 wt % for a total weight of the core, and wherein the third filler material comprises at least about 0.1 wt % and not greater than about 1 wt % for a total weight of the core.