CN101293968B - Polymer composite material for main friction plate of goods train cam driver - Google Patents

Abstract

The invention belongs to the field of production of polymer composite materials and relates to a polymer composite material used for the main friction plate of the tapered wedge in a railway freight car. The material contains the following components in weight proportion: 18-30 parts of modified polyamide resin, 20-35 parts of sepiolite fibers, 6-10 parts of copper fibers, 6-12 parts of carbon fibers, 5-15 parts of molybdenum disulfide, 5-15 parts of graphite, 5-10 parts of iron powder and 10-20 parts of wollastonite. The polymer composite material contains polyamide resin as matrix with addition of various inorganic and organic fillers and fibers. The friction pair consisting of the main friction plate of the tapered wedge made of the polymer composite material and a wear plate at a side frame column has stable friction coefficient (in the range of 0.22-0.27), low wear loss (annual average wear loss of 0.2 mm) and long service life (up to 6 years), and doesn't substantially cause the abrasion of the wear plate at the side frame column.

Description

Polymer composite material for main friction plate of goods train cam driver

Technical field

The invention belongs to the manufacturing of polymer composite, relate to a kind of polymer composite material for main friction plate of goods train cam driver.

Background technology

Wedge friction plate on the railway goods train bogie generally adopts metallic substance, and it and vehicle side frame column wearing plate are formed the main friction pair in the vibration-control system.Its defective is: 1, friction between the two belongs to the friction of metal and metal, frictional coefficient is extremely unstable, be subjected to the influence of other media such as high and low temperature and rain, snow, ice very big, the frictional coefficient variable quantity is crossed the mechanical property after conference has a strong impact on railway speed-raising truck; 2, friction plate wears no resistance, and work-ing life is low, changes frequently, and changes difficulty, and the maintenance cost height was limit untimely replacing if wear away, and then can have a strong impact on railway operation safety.

Summary of the invention

Technical problem to be solved by this invention is, the polymer composite material for main friction plate of goods train cam driver that a kind of stable friction factor, wear resistance are good, can improve long product lifecycle is provided.

The composition of polymer composite material for main friction plate of goods train cam driver of the present invention and weight part proportioning are:

Polyimide resin 18-30 part;

Sepiolite cashmere 20-35 part;

Copper fiber 6-10 part;

Carbon fiber 6-12 part;

Molybdenumdisulphide 5-15 part;

Graphite 5-15 part;

Mineral iron powder 5-10 part;

Wollastonite 10-20 part.

The present invention is matrix with the polyimide resin, add multiple inorganic, organic filler and fiber, with the main friction plate for cam driver of its making and the friction pair of side frame column wearing plate composition, its stable friction factor is between 0.22-0.27 after measured, abrasion loss is very little, and the annual wear loss is at 0.2mm, through measuring and calculating, product can reach 6 years work-ing life, and mill side frame column wearing plate is not had abrasion substantially.

Embodiment

Below tabulation provide the material component of three embodiment of the present invention and weight proportion with and the performance test results of the friction plate product made.

Claims (1)

1. polymer composite material for main friction plate of goods train cam driver is characterized in that: its composition and weight part proportioning be,

Polyimide resin 18-30 part;

Sepiolite cashmere 20-35 part;

Copper fiber 6-10 part;

Carbon fiber 6-12 part;

Molybdenumdisulphide 5-15 part;

Graphite 5-15 part;

Mineral iron powder 5-10 part;

Wollastonite 10-20 part.