Low wear and low friction coatings for articles made of low softening point materials
AssigneeFord Motor Company
InventorV. Durga Nageswar Rao
Life of this patent
Estimating the term…
Abstract
The present invention relates to an anti-friction and anti-wear liquid coating composition for use with parts made of materials that have softening points below about 300° F. and articles so coated. The present invention also relates to a method of coating parts made from a low softening point materials with an anti-friction and anti-wear hard coating composition. The coating composition comprises a mixture of (i) solid lubricants comprising boron nitride, graphite and molybdenum disulfide, (ii) a thermoset resin system, (iii) catalyst for curing the resin system and (iv) a solvent system comprising highly volatile solvents. The coating composition is applied to the part and cured to form a coating on the part.
Claims19
An anti-friction and anti-wear liquid coating composition for use with parts made of materials that have softening points below about 300° F., the coating composition comprising:
- a mixture of (i) solid lubricants comprising boron nitride, graphite and molybdenum disulfide, (ii) a resin system, (iii) at lease one catalyst for curing the resin system and (iv) a solvent system comprising highly volatile solvents.
- wherein the coating composition further comprises a curing agent, the resin system comprises an epoxy resin and a vinyl butyral resin, and the solvent system comprises diacetone alcohol, merhylethylene ketone, 2-propoxy ethanol present and xylene, and wherein the components of the solvent system are present in amounts to enable the coating composition to cure at temperatures less than 300° F.
An anti-friction and anti-wear liquid coating composition for use with parts made of materials that have softening points below about 300° F. the coating composition comprising:
- a mixture of (i) solid lubricants comprising boron nitride, graphite and molybdenum disulfide, (ii) a resin system, (iii) at lease one catalyst for curing the resin system and (iv) a solvent system comprising highly volatile solvents.
- wherein the coating composition comprises (in weight % of the composition) about 5-14% graphite, about 6-17% MoS, about 2-5% BN, about 16-25% epoxy resin, vinyl butyral resin, present in an amount of about 0.1-0.4%, a tertiary amine catalyst present in an amount of about 0.1-0.5%, a dicyandimide cross-linking agent present in an amount of about 1-3%, diacetone alcohol present in an amount of about 4-12%, methyl ethylene ketone present in an amount of about 10-30%, 2-propoxy ethanol present in an amount of about 8-20%, and xylene present in an amount of about 6-18%.
A method of coating parts made of materials that have softening points below about 300° F., the method comprising:
- coating at least a portion of the part with an anti-friction and anti-wear hard coating composition that comprises a mixture of (i) solid lubricants comprising boron nitride, graphite and molybdenum disulfide, (ii) a resin system, (iii) at least one catalyst for curing the resin system, and a (iv) solvent system comprising highly volatile solvents;
- and
- curing the coating composition to form a coating on the part.
An article coated with a coating composition comprising a mixture of (i) solid lubricants comprising boron nitride, graphite and molybdenum disulfide, (ii) a resin system, (iii) at lease one catalyst for curing the resin System and (iv) a solvent system comprising highly volatile solvents, wherein the article is made of a material that has a softening point below about 300° F.
Dependencies are inferred from the claim text.