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A kind of composite shaft and its preparation method and application

A technology of composite materials and prepregs, applied in shafts and bearings, shafts, mechanical equipment, etc., can solve the problems of complex structure of marine drive shafts, failure to reach the entire shaft, complicated installation and maintenance, etc., to reduce molding defects, Lightweight, weight-optimized effect

Active Publication Date: 2020-12-01
ZHUZHOU TIMES NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In foreign ship transmission, there is a method of adding a section of composite material in the middle of the metal transmission shaft, but only part of the composite material is used. Although the electrical insulation performance of the shaft is satisfied, it cannot achieve the purpose of reducing the weight of the entire shaft, and this method is obtained. The structure of the marine drive shaft is complicated, and the installation and maintenance are complicated

Method used

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  • A kind of composite shaft and its preparation method and application

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Comparison scheme
Effect test

Embodiment 1

[0031] A kind of composite shaft of the present invention, its structure is as figure 1 As shown, it is a hollow shaft body, the outer surface 1 and the inner surface 2 of the hollow shaft body are both cylindrical surfaces, wherein ribs 3 are evenly distributed on the inner surface 2 of the hollow shaft body; Contains metal materials; the composite material shaft is obtained by internal expansion molding after the aramid fiber woven cloth is fully impregnated with TDE-85 epoxy resin.

[0032] The method for preparing a composite material shaft in this embodiment includes the following steps:

[0033] (1) Fully impregnating 1313 aramid fiber woven cloth in TDE-85 epoxy resin to obtain a prepreg;

[0034] (2) Wind the vacuum bag on the expansion shaft, then wrap the prepreg on the surface of the expansion shaft, wrap 350 layers, and then cover the release cloth;

[0035] (3) Assemble the cylindrical cavity and the expansion shaft wrapped with prepreg, turn the expansion shaft...

Embodiment 2

[0042] The composite shaft of this embodiment has the same structure as that of Embodiment 1.

[0043] The preparation method of the composite shaft of this embodiment includes the following steps:

[0044] (1) Fully impregnating 1313 aramid fiber woven cloth in TDE-85 epoxy resin to obtain a prepreg;

[0045] (2) Wrap the vacuum bag on the expansion shaft, then wrap the prepreg on the surface of the expansion shaft for 280 layers, and then cover the release cloth;

[0046] (3) Assemble the cylindrical cavity and the expansion shaft wrapped with prepreg, turn the expansion shaft arm, make the mandrel push the slider, pressurize radially from the inside to the outside, and the slider will expand to the maximum size. , seal the vacuum bag, insert the air guide tube, send it into the autoclave, connect the vacuum line of the autoclave, evacuate, heat up to 100°C, and then increase the pressure by 0.4MPa, keep the heat for 25 minutes, so that the epoxy resin Fully flow; then rai...

Embodiment 3

[0053] The structure of the composite material shaft in this embodiment is the same as that in Embodiment 1, except that the composite material shaft is obtained by inflating the carbon fiber fully impregnated with phenolic resin.

[0054] The preparation method of the composite shaft of this embodiment includes the following steps:

[0055] (1) T400 carbon fiber is fully impregnated in phenolic resin to obtain prepreg;

[0056] (2) Wrap the vacuum bag on the expansion shaft, then wrap the prepreg on the surface of the expansion shaft for 270 layers, and then cover the release cloth;

[0057] (3) Assemble the cylindrical cavity and the expansion shaft wrapped with prepreg, turn the expansion shaft arm, make the mandrel push the slider, pressurize radially from the inside to the outside, and the slider will expand to the maximum size. , seal the vacuum bag, insert the air guide tube, send it into the autoclave, connect the vacuum line of the autoclave, evacuate, heat up to 100...

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Abstract

The invention discloses a preparation method of a composite material shaft. The method comprises the following steps: (1) dipping aramid fiber woven cloth or carbon fiber cloth in thermosetting resinto obtain a pre-dipped material; (2) winding the pre-dipped material on an expanding shaft; and (3) enabling a cylindrical cavity and the expanding shaft, on which the pre-dipped material is wound, tobe assembled, rotating the rotating arm of the expanding shaft to send the material into a hot-pressing tank to mold, opening the tank finally, shrinking the expanding shaft, demolding and completingthe preparation of the composite material shaft. The composite material shaft is prepared through adopting a vacuum inner expansion molding mode, bubbles in a shaft body can be quickly and effectively eliminated in a vacuum state, and molding defects are reduced; inner expanding extrusion can guarantee that woven cloth layers are uniformly distributed, and the defect that resin and fiber are notuniformly distributed cannot appear; compared with existing winding molding, the composite material shaft can further bear relatively great tension-compression stress when transmitting a large torquewhile a traditional winding molding transmission shaft cannot bear great tension stress.

Description

technical field [0001] The invention belongs to the technical field of composite material shaft preparation, and in particular relates to an internal expansion molding composite material shaft and its preparation method and application. Background technique [0002] Transmission shafts in aircraft, ships, automobiles and other fields are mostly made of metal materials, but there are defects such as heavy weight, inconvenient disassembly, poor corrosion resistance, and poor fatigue performance. Today's industry is always looking for corrosion-resistant, high-strength, lightweight alternative materials, and new high-performance resin-based composite materials can meet this demand. Resin composite transmission shafts have the advantages of high specific strength, high specific stiffness, low density, good fatigue resistance and vibration damping performance, and are widely used in the transmission field. [0003] At present, most domestic composite transmission shafts are form...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/34B29C70/44F16C3/02
CPCB29C70/342B29C70/446F16C3/026
Inventor 吕保杰贾金荣吴东森周升向中华彭宗文姜其斌
Owner ZHUZHOU TIMES NEW MATERIALS TECH
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