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1. WO2020198188 - FLEXIBLE WET FRICTION MATERIALS INCLUDING SILANES

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

WHAT IS CLAIMED IS:

1. A method for forming a friction material comprising:

mixing a fibrous base material and filler particles to form a substrate; saturating the substrate with a silane solution including a silane to form a uniformly impregnated silane matrix;

curing the uniformly impregnated silane matrix to form a cured uniformly impregnated silane matrix;

saturating the cured uniformly impregnated silane matrix with a non-silane binder solution to form a uniformly impregnated silane, non- silane matrix; and

curing the uniformly impregnated silane, phenolic resin matrix to form the friction material

2. The method of claim 1 , wherein the fibrous base material has a porosity of 45 to 80%,

3. The method of claim 2, wherein the fibrous base material has a porosity of 50 to 65%.

4. The method of claim 1, wherein the first curing step includes curing the uniformly impregnated silane matrix at ambient temperature for 20 to 28 hours

5. The method of claim 1, wherein the first curing step includes curing step includes curing the uniformly impregnated silane matrix at an elevated temperature for 8 to 12 minutes.

6. The method of claim 5 wherein the elevated temperature is in a range of 80 to

120 ยบ C.

7. The method of claim 1 , wherein the filler particles are silica containing particles.

8. The method of claim 7, wherein the silica containing particles are diatomaceous earth particles.

9. The method of claim 1, wherein the non-silane binder solution includes phenolic resin.

10. The method of claim 1 , wherein the silane includes an amino functional group and a silanol functional group.