MLS gasket sealability with bronze addition
A composition and method for coating a MLS gasket is disclosed. The coating may include a polymer with bronze particulate. The particulate improves the sealability of a coating on the gasket during operation.
1 . A coating for an MLS gasket comprising:
a polymer; and
a predetermined amount of bronze particulate dispersed within said polymer.
2 . The coating of claim 1 , wherein the coating further includes a fluoropolymer.
3 . The coating of claim 2 , wherein said fluoropolymer is an elastic fluoropolymer.
4 . The coating of claim 1 , wherein the amount of said bronze particulate within said coating is less than about 10 parts per 100 parts of polymer by weight.
5 . The coating of claim 1 , wherein the amount of said bronze particulate within said coating is between about 0.5 and 5 parts per 100 parts of polymer by weight.
6 . The coating of claim 1 , wherein said bronze particulate has a particle size of less than about 25 microns.
7 . The coating of claim 1 , wherein said bronze particulate has a low aspect ratio.
8 . The coating of claim 1 , wherein said bronze particulate is about 89 to about 91 percent copper, with the remainder consisting of tin and impurities.
9 . An MLS gasket with improved sealability comprising:
a metal layer having a bead portion;
a coating applied to at least a portion of said metal layer; and
a bronze particulate suspended within said coating.
10 . The MLS gasket of claim 9 , wherein said coating comprises at least one polymer.
11 . The MLS gasket of claim 9 , wherein said bronze particulate has a particle size of less than about 25 microns.
12 . The MLS gasket of claim 9 , wherein said bronze particulate has a low aspect ratio.
13 . The MLS gasket of claim 9 , wherein said bronze particulate is about 89 to about 91 percent copper, with the remainder consisting of tin and impurities.
14 . The MLS gasket of claim 10 , wherein the amount of said bronze particulate within said coating is less than about 10 parts per 100 parts of polymer by weight.
15 . The MLS gasket of claim 10 , The coating of claim 1 , wherein the amount of said bronze particulate within said coating is between about 0.5 and 5 parts per 100 parts of polymer by weight.
16 . The MLS gasket of claim 9 , wherein said coating is applied to said bead portion.
17 . A method of improving the sealability of a coating for a MLS gasket comprising the steps of:
incorporating bronze particulate into a coating; and
applying said coating to at least a portion of the MLS gasket.
18 . The method of claim 17 , further comprising the steps of:
preparing a polymer precursor; and
applying said precursor to at least a portion of the MLS gasket
19 . The method of claim 18 , further comprising the step of curing said precursor to form said coating on said metal gasket.
20 . The method of claim 18 , wherein the step of curing includes thermal curing.
21 . The method of claim 18 , further comprising the step of mixing said bronze particulate into said precursor.
22 . The method of claim 18 , wherein said coating is applied to a bead region of the metal gasket.
23 . The method of claim 18 , wherein the amount of said bronze particulate within said coating is less than about 10 parts per 100 parts of polymer by weight.