Preparation method for polyetheretherketone composite ultrasonic motor alloy friction material

A polyether ether ketone and composite ultrasonic technology is applied in the field of preparation of polyether ether ketone ultrasonic motor alloy friction materials, which can solve the problems of poor stability, insufficient bearing capacity, decreased mechanical properties, etc., and achieve excellent chemical corrosion resistance and guarantee. Dimensional stability, the effect of reducing agglomeration

Inactive Publication Date: 2018-06-29
YIBIN TIANYUAN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are still some problems in the friction materials of ultrasonic motors. There is still a lack of in-depth understanding of the friction and wear principles of friction accessories, and the understanding of the contact state between the stator and rotor and the influence of material properties on the performance of the motor is not deep enough.
Although there are many types of friction materials developed, they are still based on a large number of experiments on material formulations, lacking theoretical guidance, and the design principles of friction materials are not systematic and clear enough. The research on friction materials is mainly based on a single homogeneous material in order to improve the material Friction and wear performance as the main purpose
[0004] The matrix of polymer friction materials is closely related to its performance. A single matrix material often has performance defects, and it is difficult to meet the comprehensive performance requirements such as friction coefficient, wear resistance, thermal stability and dimensional stability at the same time, so it is often necessary to use multiple matrixes. The polymer alloy material blended with substances replaces a single matrix material to meet the comprehensive performance requirements of friction materials. However, due to compatibility problems, the mechanical properties of composite materials obtained by blending various polymer materials have declined. It cannot play the role of complementary performance, so the friction materials prepared by the existing technology have many problems such as poor adhesion, low hardness, insufficient bearing capacity, poor stability, etc., and cannot meet people's needs

Method used

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  • Preparation method for polyetheretherketone composite ultrasonic motor alloy friction material
  • Preparation method for polyetheretherketone composite ultrasonic motor alloy friction material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. Dry polyetheretherketone at 140°C for 100min; polyphenylene at 170°C for 140min; polytetrafluoroethylene at 130°C for 220min; nano-silica at 175°C for 150min; Dry at ℃ for 80 minutes; cool the above dried materials to room temperature for later use;

[0029] 2. Mix the above raw materials in parts by mass: 74 parts of polyether ether ketone; 3 parts of polyphenylene ester; 10 parts of polytetrafluoroethylene; 8 parts of nano silicon dioxide; min, mixing time 50min;

[0030] 3. Use a manual press to cold-press the mixed material in step 2 to preform at room temperature, and set the pressure to 65MPa;

[0031] 4. Put the cold-pressed preformed material in step 3 into a rotary sintering furnace for sintering, the sintering temperature is 395°C, and the sintering time is 25 minutes;

[0032] 5. After cooling the sintered material in step 4 to normal temperature, conduct the test.

Embodiment 2

[0034] 1. Dry polyetheretherketone at 150°C for 120min; polyphenylene at 180°C for 150min; polytetrafluoroethylene at 140°C for 240min; nano-silica at 185°C for 180min; Dry at ℃ for 90 minutes; cool the above dried materials to room temperature for later use;

[0035] 2. Mix the above raw materials in parts by mass: 60 parts of polyether ether ketone; 5 powders of polyphenylene ester; 15 powders of polytetrafluoroethylene; 10 powders of nano-silicon dioxide; min, mixing time 60min;

[0036] 3. Use a manual press to cold-press the mixed material in step 2 to preform at room temperature, and set the pressure to 65MPa;

[0037] 4. Put the cold-pressed preformed material in step 3 into a rotary sintering furnace for sintering, the sintering temperature is 395°C, and the sintering time is 25 minutes;

[0038] 5. After cooling the sintered material in step 4 to normal temperature, conduct the test.

Embodiment 3

[0040] 1. Dry polyether ether ketone at 160°C for 120min; polyphenylene at 180°C for 160min; polytetrafluoroethylene at 140°C for 260min; nano-silica at 185°C for 180min; Dry at ℃ for 90 minutes; cool the above dried materials to room temperature for later use;

[0041] 2. Mix the above raw materials in parts by mass: 60 parts of polyether ether ketone; 8 parts of polyphenylene ester; 10 parts of polytetrafluoroethylene; 12 parts of nano silicon dioxide; min, mixing time 60min;

[0042] 3. Use a manual press to preform the mixed material in step 2 at room temperature by cold pressing, and set the pressure to 70MPa;

[0043] 4. Put the cold-pressed preformed material in step 3 into a rotary sintering furnace for sintering, the sintering temperature is 395°C, and the sintering time is 30 minutes;

[0044] 5. After cooling the sintered material in step 4 to normal temperature, conduct the test.

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Abstract

The invention belongs to the field of polymer materials, and particularly relates to a preparation method for a polyetheretherketone composite ultrasonic motor alloy friction material. In order to achieve a friction material with high stalling torque and capability of stably operating, a matrix material formula is designed, the influences of different contents of polyetheretherketone, polybenzoate, polytetrafluoroethylene, nano silica and molybdenum disulfide on the stalling torque, no-load speed, motor efficiency, thermal conductivity, mechanical properties and frictional property of a motorare studied, ultimately, a wear-resistant material formula with excellent properties is obtained, and the high-property wear-resistant material is prepared.

Description

technical field [0001] The invention belongs to the field of polymer material modification, and in particular relates to a preparation method of a polyetheretherketone ultrasonic motor alloy friction material. Background technique [0002] The ultrasonic motor uses the inverse piezoelectric effect of piezoelectric ceramics to make the surface particles of the stator vibrate in an elliptical shape, and the rotor is rotated through the contact friction of the stator and rotor. It is a new type of motor driven by friction. Ultrasonic motors have the characteristics of simple structure, high precision, low noise, and large output torque at low speeds. They have unique advantages in many fields such as aerospace, missile guidance, and precision positioning, and have attracted widespread attention from the society. [0003] The performance of the friction material has a great influence on the operation characteristics, service life and reliability of the ultrasonic motor. In rece...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/16C08L27/18C08L67/04C08K3/36C08K3/30
CPCC08K2003/3009C08L61/16C08L2205/03C08L27/18C08L67/04C08K3/36C08K3/30
Inventor 邓敏侯天武佘国华
Owner YIBIN TIANYUAN GRP CO LTD
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