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Manganese dioxide modified fiber fabric composite material for ultrasonic motor and its preparation method and application

An ultrasonic motor and fiber fabric technology is applied in the field of manganese dioxide modified fiber fabric composite material for ultrasonic motor and its preparation field, which can solve the problem that the friction performance needs to be improved, so as to improve the tribological performance, improve the bearing capacity, and improve the friction. The effect of wear behavior

Active Publication Date: 2021-11-02
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The usual friction materials are made of bulk materials processed into thin sheets, and their friction performance needs to be improved.

Method used

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  • Manganese dioxide modified fiber fabric composite material for ultrasonic motor and its preparation method and application
  • Manganese dioxide modified fiber fabric composite material for ultrasonic motor and its preparation method and application
  • Manganese dioxide modified fiber fabric composite material for ultrasonic motor and its preparation method and application

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preparation example Construction

[0023] The invention provides a method for preparing a manganese dioxide modified fiber fabric composite material for an ultrasonic motor, comprising the following steps:

[0024] Mix and disperse phenolic resin, lamellar nano-manganese dioxide, lubricating filler and organic solvent to obtain impregnating solution;

[0025] Immersing the fabric in the impregnating solution, curing and molding the impregnated fabric to obtain a manganese dioxide modified fiber fabric composite material for ultrasonic motors;

[0026] The fabric is a fabric mixed with aramid fiber and glass fiber.

[0027] In the present invention, unless otherwise specified, the required preparation materials are commercially available products well known to those skilled in the art.

[0028] The invention mixes and disperses the phenolic resin, the sheet-layer nano manganese dioxide, the lubricating filler and the organic solvent to obtain the impregnating liquid. The present invention has no special limita...

Embodiment 1

[0045] Phenolic resin, acetone, sheet-layer nano-manganese dioxide and polytetrafluoroethylene were mixed by quality 4g, 8g, 0.8g and 2.2g respectively, and ultrasonic (500W) was dispersed for 35min to obtain the impregnation solution; the fabric (the thickness of the fabric was 0.20 ~ 0.22mm) in the impregnation solution for 20 minutes, then moved to 80 ° C blast oven to dry for 60 minutes, repeated dipping-drying steps until the weight of the fabric increased by 60%, and the resulting dried fabric with phenolic resin Stick it on the surface of titanium alloy, apply a pressure of 0.3MPa, raise it from room temperature to 150°C at a speed of 10°C / min, cure for 5 hours, and then shape it to obtain a manganese dioxide-modified fiber fabric composite material for ultrasonic motors.

Embodiment 2

[0047] Phenolic resin, ethyl acetate, lamellar nano-manganese dioxide and graphite were mixed by quality 20g, 40g, 0.1g and 1.8g respectively, and ultrasonic (500W) was dispersed for 25min to obtain the impregnating solution; the fabric (the thickness of the fabric was 0.20 ~0.22mm) was immersed in the impregnation solution for 10 minutes, then moved to a blast oven at 70°C to dry for 30 minutes, and repeated the steps of immersion-drying until the weight of the fabric increased by 50%, and the resulting dried fabric was pasted with phenolic resin Apply a pressure of 0.1MPa on the surface of the aluminum alloy, raise it from room temperature to 120°C at a rate of 5°C / min, cure for 2 hours, and then shape it to obtain a manganese dioxide-modified fiber fabric composite material for ultrasonic motors.

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Abstract

The invention provides a manganese dioxide modified fiber fabric composite material for ultrasonic motors and its preparation method and application, which belong to the technical field of ultrasonic motors. In the present invention, the fabric mixed with aramid fiber and glass fiber is used as the friction material of the ultrasonic motor for the first time to play a bearing role; moreover, the lamellar nano-manganese dioxide used has a good bearing capacity, and it can be loaded on the surface of the fabric to further improve the performance of the composite material. bearing capacity; sheet nano-manganese dioxide is combined with aramid fiber and glass fiber mixed fabric, thereby improving the tribological performance of the composite material; the present invention uses lubricating fillers in combination with sheet-layer nano-manganese dioxide, which can While reducing the friction coefficient, the wear resistance of the material is greatly improved. The friction coefficient of the obtained composite material is 0.254-0.326; the wear rate is 0.0018-0.0043g / h, which provides guidance for the design of ultrasonic motor friction materials.

Description

technical field [0001] The invention relates to the technical field of ultrasonic motors, in particular to a manganese dioxide modified fiber fabric composite material for ultrasonic motors and a preparation method and application thereof. Background technique [0002] The ultrasonic motor applies the ultrasonic signal generated by the driving circuit to the piezoelectric device, so that the stator vibrates slightly in the ultrasonic frequency range. Under the friction between the stator and the rotor, the slight vibration of the stator is converted into the macroscopic rotation or linear motion of the rotor. Ultrasonic motors are developed by combining multiple disciplines such as vibration and wave science, tribology, mechanical design, electronic power, material science and control science. [0003] The stator and the rotor convert the micro-vibration of the stator into the macroscopic motion of the rotor through the friction of the contact interface. Among them, the fr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L61/06C08L77/10C08L27/18C08K7/14C08K3/22C08K7/00C08K3/04C08K3/30
CPCC08K2003/2262C08K2003/3009C08K2201/011C08L61/06C08L2205/03C08L2205/16C08L77/10C08L27/18C08K7/14C08K3/22C08K7/00C08K3/04C08K3/042C08K3/30
Inventor 王齐华李宋徐明坤陶立明张耀明张新瑞王廷梅
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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