BEARING INCLUDING A PHTHALONITRILE-BASED POLYMER MATERIAL
A bearing including a phthalonitrile-based polymer material. In one embodiment, the bearing is configured to withstand a temperature conditions of at least 600° F.
1 . A bearing comprising a phthalonitrile-based polymer material.
2 . A bearing according to claim 1 , wherein the bearing is configured to withstand a temperature from 600° F. to 700° F.
3 . The bearing according to claim 1 , wherein the phthalonitrile-based polymer material is a phthalonitrile-based polymer matrix composite.
4 . The bearing according to claim 3 , wherein the phthalonitrile-based polymer matrix composite comprises at least one of a powder, fiber, fabric and wool.
5 . The bearing according to claim 3 , wherein the phthalonitrile-based polymer matrix composite comprises a structural reinforcing material selected from the group consisting of carbon fibers, silicon carbide fibers, ceramic fibers, metallic fibers, glass fibers, woven fabric, and combinations thereof
6 . The bearing according to claim 3 , wherein the phthalonitrile based-polymer matrix composite comprises a lubricating material.
7 . The bearing according to claim 6 , wherein the lubricating material is selected from the group consisting of hexagonal boron nitride, graphite, polytetrafluoroethylene (PTFE), molybdenum disulfide, tungsten disulfide, and combinations thereof
8 . The bearing according to claim 1 , wherein the bearing is selected from the group consisting of a plain bearing, a lined plain bearing, a flanged plain bearing, a lined flanged plain bearing, a journal bearing and a spherical plain bearing.
9 . The bearing according to claim 8 , wherein the bearing is a lined bearing comprising a liner and the liner comprises a phthalonitrile-based polymer material.
10 . The bearing according to claim 1 , wherein the phthalonitrile-based polymer material is a cured phthalonitrile-based polymer configured to have an absence of a glass transition temperature upon exposure to temperatures greater than 707° F.
11 . The bearing according to claim 1 , wherein:
the phthalonitrile-based polymer material comprises at least 1.0 wt % of phthalonitrile based on the total weight of the phthalonitrile-based polymer material.
12 . The bearing according to claim 11 , wherein the bearing is configured to withstand a temperature of at least 600° F. to 700° F.
13 . The bearing according to claim 11 , wherein the phthalonitrile-based polymer material is a phthalonitrile-based polymer matrix composite.
14 . The bearing according to claim 13 , wherein the phthalonitrile-based polymer matrix composite comprises at least one of:
a structural reinforcing material selected from the group consisting of carbon fibers, silicon carbide fibers, ceramic fibers, metallic fibers, glass fibers, woven fabric, and combinations thereof; and
a lubricating material selected from the group consisting of hexagonal boron nitride, graphite, polytetrafluoroethylene (PTFE), molybdenum disulfide, tungsten disulfide, and combinations thereof.
15 . The bearing according to claim 1 , further comprising:
a sheet of woven fabric bonded to at least one surface of the bearing, the sheet of woven fabric comprising a phthalonitrile-based polymer material.