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Preparation method of carbon fiber composite hollow blade

A hollow blade and composite material technology, applied in the field of parts processing, can solve problems such as low efficiency, poor corrosion resistance, and high cost

Inactive Publication Date: 2020-02-28
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous advancement of technology, people have higher and higher requirements for the precision and complexity of molds. Traditional mold manufacturing has shown problems such as difficulty in demoulding core molds and poor corrosion resistance, and it needs to be disassembled and assembled during use, resulting in high cost. ,low efficiency

Method used

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  • Preparation method of carbon fiber composite hollow blade
  • Preparation method of carbon fiber composite hollow blade
  • Preparation method of carbon fiber composite hollow blade

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0030] The invention provides a method for preparing a carbon fiber composite hollow blade, comprising the following steps:

[0031] (1) Wrap thermoplastic material on the surface of the resin-based composite material to prepare the core mold of the hollow blade mold to be processed, and lay the carbon fiber fabric prepreg on the surface of the core mold to form the first layer; the carbon fiber fabric prepreg Lay on the base mold of the hollow blade mold to be processed to form the second layer; lay the carbon fiber fabric prepreg on the upper cover mold of the hollow blade mold to be processed to form the third layer; lay the first layer The mandrel is positioned on the base mold with the second ply in contact with one side of the first ply; a sealing ring is placed along the edge of the base mold, after which the third ply will be laid The upper cover plate mold is reversed and assembled on the base mold with the second laying layer, and the third laying layer is in contact...

Embodiment 1

[0052] refer to Figure 6 The process shown to prepare carbon fiber composite hollow blades includes the following steps:

[0053] Step S102: The hollow blade mold to be processed includes an upper cover mold 40, a base mold 20, a core mold 10 disposed between the upper cover mold 40 and the base mold 20, and an end cap disposed at one end of the core mold 10 11; wherein, the core mold 10 is formed by wrapping a thermoplastic material on the surface of a resin-based composite material, and the resin-based composite material is a composite material of Toray T300 carbon fiber and modified epoxy resin (TG temperature<100°C), The thermoplastic material is polyphenylene sulfide (PPS); the materials of the upper cover mold 40, the base mold 20 and the end cap 11 are all stainless steel;

[0054] Lay 20 layers of carbon fiber fabric prepreg (Toray T300 carbon fiber prepreg, the TG temperature of the epoxy resin contained therein is 135° C.) laminated on the surface of the core mold ...

Embodiment 2

[0062] refer to Figure 8 The process shown to prepare carbon fiber composite hollow blades differs from that of Example 1 in that step S102 includes the following sub-steps:

[0063] Sub-step S1021: cleaning the surface of the core mold 10 of the hollow blade mold to be processed, and then laying a release cloth (specifically tetrafluoroethylene release cloth); the base mold 20 and the upper cover mold 40 of the hollow blade mold to be processed Cleaning, followed by application of release agent;

[0064] Sub-step S1022: use a laser projector to lay carbon fiber fabric prepreg on the surface of the core mold 10 to form a first layer; place the core mold 10 with the first layer in a vacuum bag, and then extract the vacuum bag gas to degas the first ply and compact the first ply;

[0065] Sub-step S1023: use a laser projector to lay carbon fiber fabric prepreg on the base mold 20 to form a second layup; place the base mold 20 with the second layup in a vacuum bag, and then ex...

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Abstract

The invention provides a preparation method of a carbon fiber composite hollow blade, and belongs to the technical field of part machining. The method for preparing the to-be-machined hollow blade comprises the following steps that a resin-based composite material with the surface wrapped with a thermoplastic material is made into a core mold; a first laying layer is laid on the surface of the core mold; a second laying layer and a third laying layer are correspondingly formed through using a base mold and an upper cover plate mold so that the first laying layer can be located between the second laying layer and the third laying layer; and finally, curing treatment is conducted on each laying layer so that all laying layers can be solidified to form the to-be-machined hollow blade. According to the method, the core mold is softened so as to be deformed more easily through softening treatment, demolding can be further achieved more conveniently and quickly, and the risk of damage to theto-be-machined hollow blade in the demolding process can be reduced; and the core mold is subjected to shape recovery treatment after demolding so as to be recovered to an original shape, so that thecore mold can be reused, and therefore the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of part processing, in particular to a method for preparing a hollow blade made of carbon fiber composite material. Background technique [0002] The mold plays an important role in the traditional manufacturing industry. The material of the traditional mold is usually metal, and the structure includes a female mold, a male mold and a core mold. The three cooperate to form a cavity consistent with the shape of the hollow blade to be processed. Raw materials, so that the raw materials are shaped into hollow blades to be processed. In order to facilitate the separation of the hollow blade to be processed from the mold, the core mold is generally designed in blocks or splits, so that the demoulding can be realized without damaging the hollow blade to be processed after molding. With the continuous advancement of technology, people have higher and higher requirements for the precision and complexity of molds. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/34B29C70/44B29C70/54B29L31/08
CPCB29C70/342B29C70/345B29C70/44B29C70/54B29L2031/082
Inventor 景喜双张承阳凌轩哲陈思宇邹家榕赵博程
Owner BEIHANG UNIV