Body of anti-friction material and method for preparing the body
OwnerWolfgang Vesper, Ulrich Wislspergerinventors
Life of this patent
Estimating the term…
Abstract
A body of anti-friction material with reduced wear is formed of at least one carbon filling and a binder matrix of synthetic resin. The body of anti-friction material contains a phosphate, especially a phosphate of di- or pyrophosphoric acid, which is fixed in fine pulverized form in the binder matrix.
Claims71
A body of anti-friction material, comprising:
- at least one carbon filler, a phosphate, and a synthetic resin binder having a portion up to 40 wt %.
A body of anti-friction material, comprising:
- at least one carbon filler;
- a synthetic resin binder;
- and
- a phosphate selected from the group consisting of tribasic potassium phosphate (K3PO4), aluminum phosphate (AlPO4), sodium pyrophosphate (Na4P2O7), zinc pyrophosphate (Zn2P2O7), ring-shaped and chain-shaped polyphosphates and ultraphosphates.
In a method for preparing a body of anti-friction material formed of at least one carbon filler and at least one synthetic resin binder, the improvement which comprises:
- mixing together at least one filler formed of carbon and at least one metal phosphate in granular or powdered form in accordance with a predetermined formulation, without an addition of a binder, until uniform distribution of components is achieved;
- then mixing the dry mixture with the at least one synthetic resin binder;
- and
- then processing the resulting mixture into a molded article using a compaction process under elevated temperature.
In a method for preparing a body of anti-friction material formed of at least one carbon filler and at least one synthetic resin binder, the improvement which comprises:
- mixing together at least one filler formed of carbon and at least one hydrogen phosphate or phosphate containing water of crystallization in granular or powdered form, in accordance with a predetermined formulation, without an addition of a binder, at a temperature high enough for the mixed phosphates to be converted into thermally stable phosphates, until a uniform distribution of components is achieved;
- then mixing the dry mixture with the at least one synthetic resin binder;
- and
- then processing the resulting mixture into a molded article using a compaction process under elevated temperature.
In a method for preparing a body of anti-friction material formed of at least one carbon filler and at least one synthetic resin binder, the improvement which comprises:
- mixing at least one filler formed of carbon, at least one metal phosphate in granular or powdered form and the at least one binder of synthetic resin with each other according to a predetermined formulation, wherein the synthetic resin has a portion up to 40 wt %, until a uniform distribution of components is achieved;
- and
- then processing the resulting mixture into a molded article using a shaping device at elevated temperature.
In a method for preparing a body of anti-friction material formed of at least one carbon filler and at least one synthetic resin binder, the improvement which comprises:
- mixing at least one filler formed of carbon, at least one metal phosphate selected from the group consisting of tribasic potassium phosphate (K3PO4), aluminum phosphate (AlPO4), sodium pyrophosphate (Na4P2O7), zinc pyrophosphate (Zn2P2O7), ring-shaped and chain-shaped polyphosphates and ultraphosphates, in granular or powdered form and the at least one binder of synthetic resin, with each other according to a predetermined formulation until a uniform distribution of components is achieved;
- and
- then processing the resulting mixture into a molded article using a shaping device at elevated temperature.
In a method for preparing a body of anti-friction material formed of at least one carbon filler and at least one synthetic resin binder, the improvement which comprises:
- mixing at least one filler formed of carbon, at least one metal phosphate in granular or powdered form and the at least one binder of synthetic resin in pasty, dissolved or slurried form, with each other according to a predetermined formulation until a uniform distribution of components is achieved;
- and
- then processing the resulting mixture into a molded article using a shaping device at elevated temperature.
In a method for preparing a body of anti-friction material formed of at least one carbon filler and at least one synthetic resin binder, the improvement which comprises:
- mixing at least one filler formed of carbon, at least one metal phosphate in granular or powdered form and the at least one binder of synthetic resin, with each other according to a predetermined formulation at a temperature above a melting range of the synthetic resin used as binder, until a uniform distribution of components is achieved;
- and
- then processing the resulting mixture into a molded article using a shaping device at elevated temperature.
In a method for preparing a body of anti-friction material formed of at least one carbon filler and at least one synthetic resin binder, the improvement which comprises:
- mixing at least one filler formed of carbon, at least one hydrogen phosphate or phosphate containing water of crystallization in granular or powdered form and the at least one binder of synthetic resin, with each other according to a predetermined formulation at a temperature high enough for the mixed phosphates to be converted into thermally stable phosphates, until a uniform distribution of components is achieved;
- and
- then processing the resulting mixture into a molded article using a shaping device at elevated temperature.
In a method for preparing a body of anti-friction material formed of at least one carbon filler and at least one synthetic resin binder, the improvement which comprises:
- mixing at least one filler formed of carbon, at least one metal phosphate in granular or powdered form and the at least one binder of synthetic resin, with each other according to a predetermined formulation until a uniform distribution of components is achieved;
- and
- then processing the resulting mixture by injection molding or transfer molding into molded articles at elevated temperature.
Dependencies are inferred from the claim text.