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Caron micron tube filling polymer oil-containing friction material for ultrasonic motor and preparation method thereof

A technology of filling polymers and carbon microtubes, applied in chemical instruments and methods, and other chemical processes, can solve the problems of poor elastic properties of friction materials, difficulty in wide-range adjustment, and difficulty in ensuring stable operation of ultrasonic motors with dry friction materials. Achieve the effects of improving elastic modulus and wear resistance, improving restart performance, and increasing hardness

Active Publication Date: 2016-09-28
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention is to solve the problem that the existing dry friction materials are difficult to ensure the stable operation of the ultrasonic motor, the friction materials with porous structure have poor elastic properties, and the oil-containing friction materials whose matrix is ​​polyimide are difficult to adjust the oil content, elastic modulus, hardness and Contact deformation is a problem that limits the application of ultrasonic motors, and then provides carbon microtube-filled polymer oil-containing friction materials for ultrasonic motors and its preparation method

Method used

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  • Caron micron tube filling polymer oil-containing friction material for ultrasonic motor and preparation method thereof

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specific Embodiment approach 1

[0028] Embodiment 1: The carbon microtube-filled polymer oil-containing friction material for the ultrasonic motor of this embodiment includes the following components in terms of mass percentage:

[0029] Polymer matrix: 45%-80%;

[0030] Friction modifier: 10%-30%;

[0031] Carbon microtubes: 1%-30%;

[0032] The polymer matrix is ​​one or a combination of polytetrafluoroethylene, polyphenylene ester, polyimide and bismaleimide;

[0033] The friction modifier is one or a combination of copper powder, nickel powder, copper oxide, molybdenum disulfide, graphite, nano-diamond powder, carbon fiber, glass fiber and rare earth powder.

specific Embodiment approach 2

[0034] Embodiment 2: This embodiment differs from Embodiment 1 in that: the inner diameter of the carbon microtubes is 0.2 μm-5 μm, and the length is 0.1 mm-2 mm. The carbon microtubes with this inner diameter are selected as the oil-containing carrier, which is conducive to the easy entry of nanoparticles / clusters into the pipeline. The carbon microtubes are embedded in the polymer matrix to improve the hardness, impact strength, wear resistance and thermal conductivity of the polymer to meet Design requirements and actual needs. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0035] Embodiment 3: The difference between this embodiment and Embodiment 1 to 2 is that the carbon microtube-filled polymer oil-containing friction material for an ultrasonic motor includes the following components in mass percentage: 40%- 55% polytetrafluoroethylene, 5%-20% polyphenylene ester, 1%-5% nano-diamond, 6%-15% rare earth powder, 3%-10% micron or nanoscale copper powder and 5% %-20% carbon microtubes. In this embodiment, adding polyphenylene can increase the hardness, and the others are the same as those in the first to second embodiments.

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Abstract

The invention discloses a carbon micron tube filling polymer oil-containing friction material for an ultrasonic motor and a preparation method thereof and particularly relates to an oil-containing friction material taking a carbon micron tube as an oil-containing carrier and applied to a traveling wave ultrasonic motor so as to solve the problems that stable operation of an ultrasonic motor is hard to guarantee by existing dry friction materials, the porous-structure friction material has bad elasticity and the oil content, elasticity modulus, hardness and contact deflection of the oil-containing friction material taking polyimide as a substrate are hard to adjust in a large range and the application of the ultrasonic motor is limited. The oil-containing friction material comprises the following components in percentage by mass: 45-80% of polymer substrate, 10-30% of friction regulator and 1-30% of carbon micron tube; and the preparation method comprises the following steps: 1) preparing a final mixture; 2) performing compression moulding to obtain a moulded object; 3) sintering the moulded object; 4) preparing a platy friction material; and 5) preparing the carbon micron tube filling polymer oil-containing friction material for the ultrasonic motor. The invention belongs to the field of oil-containing material preparation.

Description

technical field [0001] The invention relates to carbon microtube-filled polymer oil-containing friction materials for ultrasonic motors and a preparation method thereof, in particular to an oil-containing friction material using carbon microtubes as an oil-containing carrier for traveling wave ultrasonic motors and a preparation method thereof, which belongs to the preparation of oil-containing materials field. Background technique [0002] In order to ensure the output torque of ultrasonic motors, most of the friction materials used in ultrasonic motors are dry friction materials at present. It is difficult to guarantee the stability of the friction between the stator and rotor, and the reliability is not high, which makes the life, operation accuracy and stability of the motor difficult. further improvement. In addition, the study also found that after a period of storage, some ultrasonic motors cannot be started normally due to embedding and bonding at the contact interf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/18C08L67/04C08L79/08C08K13/04C08K7/00C08K7/06C08K7/14C08K3/04C08K3/08C09K3/14
CPCC08K2201/001C08K2201/003C08K2201/004C08K2201/011C08L27/18C09K3/14C08L67/04C08K13/04C08K7/00C08K3/04C08K3/08C08K2003/085C08L79/08C08K7/06C08K7/14
Inventor 李锦棒于爱兵崔玉国刘洋
Owner NINGBO UNIV
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