Three-dimensional braided composite material propeller blade for airplane and manufacturing method of propeller blade

A composite material and three-dimensional weaving technology, which is applied in the direction of propellers, aircraft parts, transportation and packaging, etc., can solve the problems of weak interlayer strength of blade composite materials, achieve high production efficiency, increase strength and stiffness, and high molding efficiency.

Active Publication Date: 2015-07-01
山东宽原新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a three-dimensional braided composite material propeller blade for aircraft and its preparation method. The present invention adopts the structural design of carbon fiber three-dimensional three-dimensional

Method used

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  • Three-dimensional braided composite material propeller blade for airplane and manufacturing method of propeller blade
  • Three-dimensional braided composite material propeller blade for airplane and manufacturing method of propeller blade
  • Three-dimensional braided composite material propeller blade for airplane and manufacturing method of propeller blade

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Embodiment 1

[0033] figure 1 It is a schematic diagram of the mold structure of the propeller blade of the present invention, and the mold includes a blade main body 1 and a blade edge reinforcement structure 2 arranged on the edge of the blade main body. The three-dimensional braided structure of the propeller blade of the present invention is based on figure 1 The mold structure in the weaving molding.

[0034] Such as figure 2 and image 3 As shown, a propeller blade of a three-dimensional braided composite material for aircraft includes an internal three-dimensional braided structure and a resin layer impregnated and cured on the three-dimensional braided structure, and the three-dimensional braided structure includes a main body of the three-dimensional braided structure Part 4, the edge reinforcement structure 3 of the three-dimensional braided structure and the secondary stitching structure 5 along the thickness direction of the blade.

[0035] based on figure 1 The mold in th...

Embodiment 2

[0038] based on figure 1 Three-dimensional weaving is carried out on the mandrel, and the weaving scheme of the main body inside the blade is as follows: the main part 4 of the three-dimensional weaving structure is processed by three-dimensional five-way weaving, the yarn is T300 carbon fiber, and the edge reinforcement structure 3 of the three-dimensional weaving structure is three-dimensional For four-way braiding, one or a combination of T300 and T700 is used for the weaving yarn on the edge of the blade. The overall three-dimensional braided propeller blade has a length of 4m and a width of 1m. The woven prefabricated body continues to be sutured for the second time in the thickness direction, and T300 carbon fiber is selected as the reinforcing yarn, and the proportion of suture fiber accounts for 15% of the overall prefabricated body fiber proportion. The suture structure schematic diagram is as follows image 3 shown.

[0039] The prefabricated carbon fiber blade aft...

Embodiment 3

[0041] based on figure 1Three-dimensional weaving is carried out on the mandrel, and the weaving scheme of the main body inside the blade is as follows: the main part 4 of the three-dimensional weaving structure adopts three-dimensional four-way weaving, the yarn uses T700 carbon fiber, and the edge reinforcement structure 3 of the three-dimensional weaving structure adopts three-dimensional Five-way weaving treatment, one or a combination of T300 and T700 is selected as the weaving yarn for the edge of the blade. The overall three-dimensional braided propeller blade has a length of 3m and a width of 0.6m. The woven prefabricated body will continue to be sutured for the second time in the thickness direction, and T700 carbon fiber is selected as the reinforcing yarn. The proportion of suture fiber accounts for 25% of the overall prefabricated body fiber proportion. The suture structure schematic diagram is as follows image 3 shown.

[0042] The carbon fiber blade preform af...

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Abstract

The invention discloses a three-dimensional braided composite material propeller blade for an airplane and a manufacturing method of the propeller blade. The preparation method comprises the following steps: designing the blade mold appearance, comprising the operation of designing the specific reinforcing parts of different strength and rigidity requirements; performing integral braiding on the blade main body and the specific reinforcing parts of the blades by adopting a carbon fiber three-dimensional preform multi-part combined braiding technology, thereby obtaining a three-dimensional braided structure; performing secondary suture reinforcement treatment along the thickness direction of the three-dimensional braided structure after the preparation of the three-dimensional braided structure is finished, thereby obtaining a secondary suture structure; by taking thermosetting resin glue liquid as a matrix, finishing the resin compounding process of the three-dimensional stereoscopic braided structure by adopting the process of combining vacuum infusion and rapid thermocuring, and finally, manufacturing the carbon fiber composite material propeller blade. By utilizing the multiple three-dimensional stereoscopic braided structures, the secondary suture technology and the process of combining vacuum infusion and rapid thermocuring, the strength of the propeller blade is enhanced, and the production efficiency of the blade is effectively improved.

Description

technical field [0001] The invention relates to a three-dimensional braided carbon fiber composite material propeller, in particular to a three-dimensional braided composite material propeller blade for aircraft and a preparation method thereof. Background technique [0002] The propeller is a key part of the power machinery in a helicopter or other small aircraft. Compared with traditional metal propellers, composite propellers have many advantages such as light weight, high rigidity, low vibration, strong weather resistance and flexible design. The structure of the composite material propeller includes two parts: the hub and the blade, and the blade is the main component that determines the dynamic stability of the entire propeller. Therefore, in the past ten years, many countries have carried out the design and manufacture of propeller blades made of new composite materials. The structural design and manufacturing technology of composite propeller blades are also listed ...

Claims

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Application Information

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IPC IPC(8): B64C11/22B29C70/48B29C70/54
Inventor 朱波王宝刚曹伟伟张敏
Owner 山东宽原新材料科技有限公司
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