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Combined anti-impact structure of rotor made from composite material, as well as preparation device and preparation method thereof

A composite material and preparation device technology, which is applied in the field of composite rotating body combined impact-resistant structure and its preparation device, can solve the problems of increased weight and limited impact resistance, and achieve the effect of improving connection strength and fiber positioning performance.

Active Publication Date: 2016-05-18
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the thickness of the existing metal-composite composite rotary structure is relatively thin, and the impact resistance is limited. If the thickness is increased, the weight will increase accordingly, and a thicker composite material is required to protect and fix it, which increases the weight.

Method used

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  • Combined anti-impact structure of rotor made from composite material, as well as preparation device and preparation method thereof
  • Combined anti-impact structure of rotor made from composite material, as well as preparation device and preparation method thereof
  • Combined anti-impact structure of rotor made from composite material, as well as preparation device and preparation method thereof

Examples

Experimental program
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Effect test

no. 1 example

[0039] Composite material rotary combined impact-resistant structure, including: a metal thin-walled cylinder 1 covered and fixed sequentially from the inside to the outside, the inner aramid fiber wrapping layer 2 and the outer aramid fiber wrapping layer 3, the inner aramid fiber wrapping layer The fiber wrapping layer 2 is impregnated with resin at intervals so that the inner aramid fiber wrapping layer 2 has a partially hollow structure, and the outer aramid fiber wrapping layer 3 is evenly impregnated with resin.

[0040] The metal thin-wall cylinder 1 is made of aluminum alloy.

[0041] The resin is a high toughness, high temperature epoxy resin.

[0042] The preparation device of the combined impact-resistant structure of the composite rotary body includes an aramid fiber roll 12, an intermittent dipping roll, a continuous dipping roll 8, and a metal mandrel 5. One end of the fiber yarn 6 is wound on the aramid fiber roll 12, and the other One end passes through the tr...

no. 2 example

[0056] The material of the metal thin-walled cylindrical body 1 in the first embodiment is changed to titanium alloy.

[0057] The materials of the inner aramid fiber wrapping layer 2 and the outer aramid fiber wrapping layer 3 are replaced by carbon fiber materials from aramid fiber materials.

[0058] Change the intermittent dipping roller to the boss dipping roller 9, the boss dipping roller 9 is composed of a center roller 13 and several dipping bosses 14 arranged in gaps, and the lower part of the boss dipping roller 9 is placed to hold the resin glue During the rotation of the boss dipping roller 9, the top of the dipping boss 14 can extend into the container and dip into the glue solution, then rotate to the highest point and contact the fiber yarn 6, so that the resin infiltrates the fiber yarn 6.

[0059] In this embodiment, by changing the winding direction of the winding mandrel 5, the resin in the inner aramid fiber wrapping layer 2 is controlled to be arranged in ...

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Abstract

The invention discloses a combined anti-impact structure of a rotor made from a composite material, as well as a preparation device and a preparation method thereof. The combined anti-impact structure comprises a metal thin-walled cylinder, an inner-side aramid fibre wrapped layer and an outer-side aramid fibre wrapped layer which are sequentially coated and fixed from the inside to the outside, wherein resin is infiltrated on the inner-side aramid fibre wrapped layer at intervals to enable the inner-side aramid fibre wrapped layer to be of a partially hollow structure, and the resin is uniformly infiltrated on the outer-side aramid fibre wrapped layer. According to the invention, on the basis of the existing structure of a rotor made from a composite material, the resin is infiltrated on the aramid fibre layers according to a certain rule, thus the partially hollow structure is formed; and due to the structure, on the basis of furthest reducing the weight of the structure, the thickness of the rotor is increased, the advantages of high toughness and high energy absorption performance of the aramid fibre layers are kept, and the anti-impact performance of the rotor made from the composite material is enhanced. Meanwhile, the combined anti-impact structure disclosed by the invention is capable of remarkably increasing the connection strength among the inner-side metal thin wall, the aramid fibre layers, and the outer-side composite material layer of the rotor made from the composite material, and high in fibre location performance.

Description

technical field [0001] The present invention relates to the technical field of composite material preparation, in particular to a composite material rotator prepared by winding and forming by a special discontinuous dipping process and its technological process, specifically, a composite material rotator combined impact-resistant structure And preparation device and method thereof. Background technique [0002] Rotary components are common structural components such as aerospace vehicles. During use, they are extremely vulnerable to impact damage such as flying birds, ice cubes, tire fragments, and fragments of their own structural fractures. Composite materials have gradually replaced metal materials as the main preparation materials for rotary components in aerospace structures due to their advantages such as high specific strength, high specific stiffness, good designability, good fatigue resistance, and good impact resistance. At present, the rotary structure mainly inc...

Claims

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Application Information

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IPC IPC(8): B29C70/32
CPCB29C70/32
Inventor 还大军李吻李勇诸静肖军褚奇奕李涛左龙彦
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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