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Motor-shaft composite material and preparation method thereof

A motor shaft and composite material technology, applied in the field of motor shaft composite materials and their preparation, can solve the problems of poor thermal conductivity, slow heat dissipation, poor heat resistance, etc., and achieve the effects of improving wear resistance, high thermal conductivity, and small overall weight

Active Publication Date: 2017-03-15
余姚市宏阳微电机有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: heat, cold, water absorption, oil absorption, large size changes, poor heat resistance, slow heat dissipation, easy to cause "shaft seizure" phenomenon after deformation, and creep property
15-18 parts by weight of copper powder is added to the composite material, which can improve the thermal conductivity of the composite material, but the addition of copper powder increases the specific gravity of the composite material, and the copper powder is easy to peel off after long-term operation and remains in the bearing gap medium, resulting in severe bearing wear
[0005] At present, plastic motor shaft materials have more or less the following deficiencies: (1) specific gravity; (2) poor thermal conductivity, which reduces the strength of the motor shaft when it is running at high speed; (3) is not wear-resistant and has a short service life, which makes it difficult for plastics Wide application in the field of rotating shaft

Method used

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  • Motor-shaft composite material and preparation method thereof

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preparation example Construction

[0028] The preparation method of modified nano-alumina comprises the steps of:

[0029] (1) Add 100 parts by weight of nano-alumina to 500 parts by weight of water, stir and disperse until no precipitation remains; and

[0030] (2) Add 17 parts by weight of methyl methacrylate, stir for 15 to 20 minutes and heat to 110° C. to remove moisture to obtain nano-alumina with methyl methacrylate on the surface.

[0031] A method for preparing a motor shaft, comprising the steps of:

[0032] (1) Add polytetrafluoroethylene, polyoxymethylene, modified nano-alumina, graphene, photoinitiator to the water of 300 parts by weight, stir and mix;

[0033] (2) irradiating the mixed solution under light waves of 240 to 330 nm for 30 to 40 minutes to obtain a light irradiated mixed solution;

[0034] (3) heating to 110°C to remove moisture from the mixed solution to obtain a dry powder mixture;

[0035] (4) adding the powder mixture into a mold for hot pressing to obtain a rough motor shaft b...

Embodiment 1

[0048] The components of a motor shaft composite material are proportioned according to the following parts by weight

[0049] 54.5 parts of polytetrafluoroethylene

[0050] 25 parts of polyoxymethylene

[0051] Modified nano-alumina 15 parts

[0052] Graphene 5 parts

[0053] Photoinitiator 0.5 parts

[0054] The preparation method of the motor rotating shaft comprises the steps of:

[0055] (1) Add polytetrafluoroethylene, polyoxymethylene, modified nano-alumina, graphene, photoinitiator to the water of 300 parts by weight, stir and mix;

[0056] (2) irradiating the mixed solution under a light wave of 240-320nm for 30 minutes to obtain a light-irradiated mixed solution;

[0057] (3) heating to 110°C to remove moisture from the mixed solution to obtain a dry powder mixture;

[0058] (4) adding the powder mixture into the mold for hot-press molding to obtain a rough motor shaft blank, the hot-press molding conditions are temperature 300°C, pressure 5MPa, time 25min; and ...

Embodiment 2

[0061] The components of a motor shaft composite material are proportioned according to the following parts by weight

[0062] 67.8 parts of polytetrafluoroethylene

[0063] 20 parts of polyoxymethylene

[0064] 9 parts of modified nano-alumina

[0065] 3 parts graphene

[0066] Photoinitiator 0.2 parts

[0067] The preparation method of the motor rotating shaft comprises the steps of:

[0068] (1) Add polytetrafluoroethylene, polyoxymethylene, modified nano-alumina, graphene, photoinitiator to the water of 300 parts by weight, stir and mix;

[0069] (2) irradiating the mixed solution under a light wave of 240-330nm for 40 minutes to obtain a light-irradiated mixed solution;

[0070] (3) heating to 110°C to remove moisture from the mixed solution to obtain a dry powder mixture;

[0071] (4) adding the powder mixture into a mold for hot-press molding to obtain a rough motor shaft blank, the hot-press molding conditions are temperature 305° C., pressure 5 MPa, and time 20 ...

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Abstract

The invention provides a motor-shaft composite material and a preparation method thereof. The motor-shaft composite material comprises, by weight, 54.5-67.8 parts of polytetrafluoroethylene, 20-25 parts of polyformaldehyde, 9-15 parts of modified nanometer aluminum oxide, 3-5 parts of grapheme and 0.2-0.5 part of a photoinitiator. A motor shaft has properties of light weight, high strength, abrasion resistance and corrosion resistance.

Description

technical field [0001] The invention relates to the field of motor shafts, in particular to a motor shaft composite material and a preparation method thereof. Background technique [0002] The rotating shaft is the key basic part to ensure the normal operation of the motor. Its technical performance directly determines the reliability, service life and working efficiency of the motor, and it has always played an important role in the process of industrial development. With the continuous improvement of environmental protection requirements, industrial equipment has increasingly stringent restrictions on the leakage of lubricating grease, so oil-free self-lubricating shafts are widely favored. In addition, due to the complex process and high energy consumption of the metal shaft, a new type of motor shaft is required to replace the metal shaft. [0003] Plastic has excellent self-lubricating properties, wear resistance, low coefficient of friction and special anti-seizing pr...

Claims

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Application Information

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IPC IPC(8): C08L51/00C08L59/00C08K3/04C08F259/08
CPCC08F259/08C08K2201/003C08K2201/011C08L51/003C08L59/00C08K3/04
Inventor 徐新辉
Owner 余姚市宏阳微电机有限公司