Abrasive article including shaped abrasive particles

• US 9,566,689 B2
• Filed: 12/22/2014
• Issued: 02/14/2017
• Est. Priority Date: 12/31/2013
• Status: Active Grant

• 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: Iyengar, Sujatha
• Primary Examiner(s): Van Nguyen, Dung
• Application Number:
  US14/579,143
• Publication Number:
  US 20150183089A1
• Time in Patent Office: 785 Days
• US Class Current: 1/1
• CPC Class Codes: B24D 11/00 Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
• CPC Class Codes: B24D 11/005 Making abrasive webs
• CPC Class Codes: C09K 3/1409 Abrasive particles per se preparation of diamond C01B32/25

Abstract

A fixed abrasive article including a blend of abrasive particles having a first type of shaped abrasive particle comprising a first height (h1), a second type of shaped abrasive particle comprising a second height (h2) less than the first height, where the blend of abrasive particles includes a first content of the first type of shaped abrasive particles and a second content of the second type of shaped abrasive particle, and the first content is different as compared to the second content.

Claims

1. A fixed abrasive article comprising:

a blend of abrasive particles comprising;

a first content (C1) of a first type of shaped abrasive particle comprising a first height (h1);

a second content (C2) of a second type of shaped abrasive particle comprising a second height (h2) less than the first height, and

a height ratio (h2/h1) of at least about 0.2 and not greater than about 0.98,

wherein the first content is at least about 1% and not greater than about 70% of the total content of the blend, and

wherein the second content at least about 1% and not greater than about 98% of the total content of the blend.

2. The fixed abrasive article of claim 1, wherein the height ratio (h2/h1) is at least 0.5 and not greater than 0.9.

3. The fixed abrasive article of claim 1, further comprising a height difference (h1−

h2) of at least about 1 micron and not greater than about 2 mm.

4. The fixed abrasive article of claim 1, wherein the first type of shaped abrasive particle comprises a first length (l1), and the second type of shaped abrasive particle comprises a second length (l2), and further comprising a length ratio (l1/l2) of at least about 0.05 and not greater than about 10.

5. The fixed abrasive article of claim 1, wherein the first content is at least about 10% and not greater than about 50% of the total content of the blend, and wherein the second content at least about 20% and not greater than about 90% of the total content of the blend.

6. The fixed abrasive article of claim 1, wherein the first content is at least about 25% and not greater than about 35% of the total content of the blend, and wherein the second content at least about 50% and not greater than about 75% of the total content of the blend.

7. The fixed abrasive article of claim 1, further comprising a blend ratio (C1/C2) of at least about 0.1 and not greater than about 10.

8. The fixed abrasive article of claim 7, wherein the blend ratio (C1/C2) is at least about 0.1 and not greater than about 2.5.

9. The fixed abrasive article of claim 1, wherein the blend further comprises a third type of abrasive particle including a shaped abrasive particle.

10. The fixed abrasive article of claim 1, wherein the fixed abrasive article is selected from the group consisting of a bonded abrasive article, a coated abrasive article, and a combination thereof.

11. The fixed abrasive article of claim 1, wherein the blend of abrasive particles comprises a plurality of shaped abrasive particles, and wherein each shaped abrasive particle of the plurality of shaped abrasive particles is arranged in a controlled orientation relative to a backing, the controlled orientation including at least one of a predetermined rotational orientation, a predetermined lateral orientation, and a predetermined longitudinal orientation.

12. The fixed abrasive article of claim 11, wherein a majority of the first type of abrasive particles are coupled to the backing in a side orientation and wherein a majority of the second type of abrasive particles are coupled to the backing in a side orientation.

13. The fixed abrasive article of claim 1, wherein the first type of shaped abrasive particle comprises a body having a length (l), a width (w), and a height (hi), wherein the width≧

length, the length≧

height, and the width≧

height, and wherein the body comprises a two-dimensional polygonal shape as viewed in a plane defined by a length and width, wherein the body comprises a shape selected from the group consisting of triangular, quadrilateral, rectangular, trapezoidal, pentagonal, hexagonal, heptagonal, octagonal, and a combination thereof.

14. The fixed abrasive article of claim 13, wherein the body comprises a polycrystalline material selected from the group of materials consisting of nitrides, oxides, carbides, borides, oxynitrides, diamond, and a combination thereof.

15. The fixed abrasive article of claim 1, wherein the fixed abrasive article comprises a stainless steel lifespan of at least about 11 in³ and not greater than about 25 in³.

16. A fixed abrasive article comprising:

a blend of abrasive particles comprising;

a first content (C1) of a first type of shaped abrasive particle comprising a first height (h1);

a second content (C2) of a second type of shaped abrasive particle comprising a second height (h2) less than the first height,

a height ratio (h2/h1) of at least about 0.2 and not greater than about 0.98, and

a blend ratio (C1/C2) is at least about 0.1 and not greater than about 2.5.

17. The fixed abrasive of claim 16, wherein the height ratio is at least about 0.5 and not greater than about 0.9.

18. The fixed abrasive of claim 16, wherein the first content is at least 10% the total content of the blend, and wherein the second content at least 20% of the total content of the blend.

19. The fixed abrasive of claim 16, wherein the blend further comprises a third content comprising a third type of shaped abrasive particle.