Environmentally compatible solid film lubricant

Details Environmentally compatible solid film lubricant Environmentally compatible solid film lubricant

1997-12-19

1999-09-28

Howard, Jacqueline V.

Solid anti-friction devices, materials therefor, lubricant or se

Lubricants or separants for moving solid surfaces and...

Inorganic compound

508167, C10M12522, C10M12526

Patent

active

059588470

ABSTRACT:
A solid film lubricant useful for aerospace and other heavy machinery applications comprising a mixture of boric acid and molybdenum disulfide in a polymeric binder comprising a silicone polymer and an epoxy resin is provided. Boric acid and compounds related to boric acid can be effectively used as inorganic lubricant components in solid film lubricants in place of graphite thereby avoiding galvanic corrosion induced by graphite. The boric acid containing solid film lubricant provides superior lubrication at the high stress levels common for booster rockets and other aerospace applications, but without inducing galvanic corrosion, or exposing workers and the environment to toxic materials such as lead compounds. In addition, it affords substantial savings in labor, due to the need for only one coat, and savings in energy due to the substantially lower cure temperature of about 450.degree. F. compared to 1000.degree. F. for a currently used two coat ceramic system. There is also a significant savings in time, hazardous waste disposal costs and human protection costs by using the boric acid containing SFL.

REFERENCES:
patent: 4715972 (1987-12-01), Pacholke
patent: 5282985 (1994-02-01), Zabinski et al.
patent: 5431830 (1995-07-01), Erdemir

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