Friction material and preparation method thereof

A friction material and raw material technology, applied in the direction of friction linings, mechanical equipment, etc., can solve the problems of semi-metallic brake pads, such as easy corrosion, high copper fiber density, and easy corrosion and oxidation, and achieve excellent mechanical properties, high friction coefficient, Inexpensive effect

Active Publication Date: 2016-10-26
宁波联华汽车部件有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, semi-metal brake pads have defects such as easy rust, high heat generation, high cost, and friction noise; steel fibers and copper fibers are dense and easy to corrode and oxidize; glass fibers are relatively brittle; aramid fibers and carbon fibers have superior performance but are expensive

Method used

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  • Friction material and preparation method thereof
  • Friction material and preparation method thereof
  • Friction material and preparation method thereof

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preparation example Construction

[0061] Correspondingly, the present invention also provides a preparation method of the above friction material, comprising the following steps: step a) dispersing halloysite nanotubes in 0.01-0.15 mol / L nitric acid solution to obtain 0.1-0.5 g / mL The mixed solution is ultrasonically treated, then transferred to a hydrothermal reaction kettle for 5-10 hours at 120-180°C, cooled, filtered, washed, and dried; step b) the halloysite nanotubes and iron-zinc alloys obtained in step a Powder, polyetheretherketone, tungsten sulfide, molybdenum sulfide, spherical graphite, carbonyl nickel powder, zirconium carbide, tantalum carbide and phenolic resin are mixed, stirred, placed in a hot pressing mold at 160-180°C under the condition of 15-20MPa Keep for 30-50s, exhaust 2-5 times in the middle, then treat for the first time at 160-180°C for 2-5 hours, raise the temperature to 250-300°C for the second time for 0.5-3 hours, cool down to room temperature, and get friction material.

[0062]...

Embodiment 1

[0068] 1) First prepare a 0.05mol / L nitric acid solution, then weigh a certain amount of halloysite and disperse it into the nitric acid solution to form a mixture with a concentration of 0.3g / mL, and transfer it to a hydrothermal reaction kettle after ultrasonic treatment for 5 hours treated at 150°C for 6h, cooled to room temperature, filtered and washed with deionized water, and dried at 110°C for 15h;

[0069] 2) Weigh and mix the materials according to the following proportions

[0070] Iron-zinc alloy powder 5wt%, polyetheretherketone 5wt%, tungsten sulfide 0.9wt%, molybdenum sulfide accounted for 0.5wt% of the total mass, spherical graphite accounted for 8wt% of the total mass, carbonyl nickel powder accounted for 4wt% of the total mass, carbonized Zirconium accounts for 5wt% of the total mass, tantalum carbide accounts for 3wt% of the total mass, phenolic resin accounts for 3.5wt% of the total mass, and the rest is halloysite nanotubes prepared in step 1). Put the abo...

Embodiment 2

[0078] 1) First prepare a 0.15mol / L nitric acid solution, then weigh a certain amount of halloysite and disperse it into the nitric acid solution to form a mixture with a concentration of 0.5g / mL, and transfer it to the hydrothermal reaction kettle after ultrasonic treatment for 1h treated at 180°C for 5h, cooled to room temperature, filtered and washed with deionized water, and dried at 150°C for 8h;

[0079] 2) Weigh and mix the materials according to the following proportions

[0080] Iron-zinc alloy powder 10wt%, polyether ether ketone 2wt%, tungsten sulfide 0.5wt%, molybdenum sulfide accounted for 0.8wt% of the total mass, spherical graphite accounted for 15wt% of the total mass, carbonyl nickel powder accounted for 2wt% of the total mass, carbonized Zirconium accounts for 6wt% of the total mass, tantalum carbide accounts for 6wt% of the total mass, phenolic resin accounts for 5wt% of the total mass, and the rest is halloysite nanotubes prepared in step 1). Put the above...

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Abstract

The invention provides a friction material and a preparation method thereof. The friction material is prepared from iron-zinc alloy powder, polyether-ether-ketone, tungsten sulfide, molybdenum sulfide, spherical graphite, nickel carbonyl powder, zirconium carbide, tantalum carbide, phenolic resin and the balance halloysite nanotube. The halloysite nanotube has excellent heat radiation performance. The iron-zinc alloy powder has high high-temperature hardness, compressive strength, impact toughness and friction performance. The polyether-ether-ketone has excellent mechanical performance, chemical performance and tribology performance. The hardness and compressive strength of a matrix are remarkably improved through the nickel carbonyl powder. The strength and friction forming capacity of the material can be remarkably improved through the spherical graphite. The zirconium carbide and the tantalum carbide have the beneficial effects of being low in density, good in wear resistance, high in coefficient of friction and the like. The above components are compounded, and interaction and mutual effects of ingredients are achieved; and the prepared friction material has the beneficial effects of being low in price, excellent in friction performance, stable in performance and the like.

Description

technical field [0001] The invention relates to the technical field of material preparation, in particular to a friction material and a preparation method thereof. Background technique [0002] Automobile brake pads are the key parts of motor vehicle brakes, which are related to the safety of automobile operation, and their development is closely related to the development of automobiles. The function of the car brake pad is to absorb the kinetic energy of the car, convert the kinetic energy of the car into heat energy and other forms of energy, so that the car brakes, and its performance determines the reliability and stability of the brake. [0003] With the rapid development of my country's automobile industry, the power, speed and load of automobiles are increasing day by day, and the operating conditions are becoming increasingly severe. Therefore, higher requirements are put forward for automobile brake friction materials, such as suitable and stable friction coefficie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D69/02
CPCF16D69/023F16D69/027
Inventor 丁文罗立立
Owner 宁波联华汽车部件有限公司
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