Composite friction materials
OwnerDavid N. Bortz, Brian C. Howells +1inventors
InventorsDavid N. Bortz, Brian C. Howells, Erik M. Tobin
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Abstract
A textile-reinforced composite friction material is provided by the present invention that includes a nonwoven needlepunched fiber mat, a resin matrix impregnated within and onto the fiber mat, and an inorganic nanomaterial such as a carbide nanomaterial dispersed within the resin matrix. The carbide nanomaterial is preferably tungsten, silicon or titanium carbide nanomaterial.
Claims10
An improved composite friction material for use in friction applications comprising a nonwoven needlepunched fiber mat of staple fibers, said fiber mat of staple fibers being needlepunched to a density of 2000-7000 penetrations per cm3, a resin matrix impregnated in the fiber mat;
- and a carbide nanomaterial dispersed within the composite, the carbide nanomaterial selected from the group consisting of tungsten, titanium and silicon and comprising between approximately 2 and 20% of the composite material by weight such that said composite friction material has increased dynamic coefficient of friction and increased fade resistance.
A composite friction material comprising:
- a carded and needlepunched fiber mat of staple fibers selected from a group comprising aramid, glass, ceramic and carbon fibers;
- a resin matrix impregnated into the needlepunched fiber mat;
- and a carbide nanomaterial selected from a group consisting of tungsten, silicon and titanium and dispersed within the composite in an amount between approximately 2 and 20% of the composite friction material, said fiber mat of staple fibers being needlepunched to a density of 2000-7000 penetrations per cm3.
A method of forming an improved composite friction material comprising the steps of:
- preparing a fiber mat, dispersing a carbide nanomaterial using a slurry of said nanomaterial in a solvent within a resin and saturating the fiber mat with resin containing the nanomaterial, drying, curing and densifying the resulting composite material and combining the composite material with a support backing.
Dependencies are inferred from the claim text.