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Forming method of net size RTM of metal rudder core and resin matrix composite material

A technology of composite materials and molding methods, which can be applied to other household appliances, household appliances, household components, etc., can solve the problems of incomplete fiber structure, poor ablation resistance, discontinuous fibers, etc., achieve low production cost, improve burning Corrosion performance, the effect of solving fiber discontinuity

Active Publication Date: 2019-09-10
HUBEI FEILIHUA QUARTZ GLASS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method that can effectively solve the disadvantages of fiber discontinuity, low strength, and poor ablation resistance caused by the existing air rudder preparation method, and the traditional RTM forming air rudder needs mechanical processing, and the process is cumbersome. Net size RTM molding method of metal rudder core and resin matrix composites with incomplete fiber structure

Method used

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  • Forming method of net size RTM of metal rudder core and resin matrix composite material
  • Forming method of net size RTM of metal rudder core and resin matrix composite material
  • Forming method of net size RTM of metal rudder core and resin matrix composite material

Examples

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Comparison scheme
Effect test

Embodiment 1

[0028] Cut the quartz woven fabric according to the expansion diagram of the front edge extension of the air rudder; the quartz woven fabric is a three-dimensional weaving structure, and the thickness of a single layer is (0.1~2.5) mm. Then the cut fabrics are stacked and flattened, and the laminated fabrics are no less than 4 layers, and then sewn into a whole by the normal through-sewing method, so that the front edge glass fiber reinforced plastic strip prefabricated part is obtained; the front edge glass reinforced plastic strip prefabricated part is put into In the fiberglass rod mold, close the mold, use an oven to preheat and dehumidify the mold and prefabricated parts, the preheating temperature is 70°C, the preheating time is 5h, and at the same time vacuum the mold cavity, the vacuum degree is -0.9MPa; weigh 2.0kg of phenolic resin, preheated at 70°C for 30 minutes, and then use the RTM glue injection machine to pour the resin into the mold cavity under the glue injec...

Embodiment 2

[0036] Cut the quartz woven fabric according to the expansion diagram of the front edge extension of the air rudder; the quartz woven fabric is a three-dimensional weaving structure, and the thickness of a single layer is 0.1~2.5mm. Then the cut fabrics are stacked and flattened, and the laminated fabrics are no less than 4 layers, and then sewn into a whole by the normal through-sewing method, so that the front edge glass fiber reinforced plastic strip prefabricated part is obtained; the front edge glass reinforced plastic strip prefabricated part is put into In the fiberglass rod mold, close the mold, use an oven to preheat and dehumidify the mold and prefabricated parts, the preheating temperature is 60°C, the preheating time is 5h, and at the same time vacuum the mold cavity, the vacuum degree is -0.8MPa; weigh 1.5kg of phenolic resin, preheated at 60°C for 20°C, so that the injected resin can soak into the fabric (front-edge FRP strip prefabrication), and then heat up and ...

Embodiment 3

[0045] Cut the quartz woven fabric according to the expansion diagram of the front edge extension of the air rudder; the quartz woven fabric is a three-dimensional weaving structure, and the thickness of a single layer is 0.1~2.5mm. Then the cut fabrics are stacked and flattened, and the laminated fabrics are no less than 4 layers, and then sewn into a whole by the normal through-sewing method, so that the front edge glass fiber reinforced plastic strip prefabricated part is obtained; the front edge glass reinforced plastic strip prefabricated part is put into In the FRP strip mould, close the mold and use an oven to preheat and dehumidify the mold and prefabricated parts. The preheating temperature is 60~70°C and the preheating time is 5h. At the same time, the mold cavity is evacuated to a vacuum degree of -0.85MPa; Weigh 1.8kg of phenolic resin, preheat it at 65°C for 25 minutes, and then use the RTM glue injection machine to pour the resin into the mold cavity under the con...

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Abstract

The invention relates to a forming method of a net size RTM of a metal rudder core and resin matrix composite material, and belongs to the technical field of aircraft air rudder preparation. Accordingto the preparation method, the damage of a fiber structure caused by mechanical processing is eliminated, the tensile strength can reach 220 MPa, the anti-erosion capability and the ablation resistance of a heat-resistant layer are greatly improved, and the use requirements of the atmosphere with the temperature of 2000 DEG C and the atmospheric pressure of 430 kPa are met.

Description

technical field [0001] The invention relates to a net-size RTM forming method of a metal rudder core plus a resin-based composite material, and belongs to the technical field of aircraft air rudder preparation. Background technique [0002] During the flight, the aircraft faces severe aerodynamic and thermal environment. As the main control part of the flight attitude, the air rudder also faces serious threat of ablation, especially in the rudder ball head and the leading edge of the rudder. The amount of ablation directly affects the The shape of the air rudder changes until it affects the control accuracy of its auxiliary flight. [0003] At present, the preparation of air rudders mostly adopts the method of three-dimensional braided fabrics covering and suturing the metal rudder core through RTM, and then machining until the air rudder meets the requirements of the air rudder shape and size; but the air rudder prepared in this way is due to machining The reason for this ...

Claims

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Application Information

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IPC IPC(8): B29C70/48B29L31/30
CPCB29C70/48B29L2031/3076
Inventor 陈永乐钟文雷攀张素婉孙绯王振华杨恺
Owner HUBEI FEILIHUA QUARTZ GLASS
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