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Composite method of carbon fiber aviation model propeller blade

A carbon fiber and propeller technology is applied in the composite field of carbon fiber model aircraft propellers, which can solve the problems of poor finish, low efficiency, rough surface of carbon fiber model aircraft propellers, etc., and achieves the effect of high production speed and high efficiency.

Inactive Publication Date: 2005-10-26
张国志 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the molding of carbon fiber model aircraft propellers is first foamed by polyurethane, and then the outer surface of the foam is manually coated with carbon fiber outer cladding. The resulting carbon fiber model aircraft propellers have a rough appearance, poor finish, and low efficiency.

Method used

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  • Composite method of carbon fiber aviation model propeller blade
  • Composite method of carbon fiber aviation model propeller blade
  • Composite method of carbon fiber aviation model propeller blade

Examples

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Embodiment 1

[0015] Such as figure 1 As shown, the composite method of a carbon fiber aircraft model propeller blade described in this embodiment is to first put the resin-impregnated carbon fiber 9 into the mold 6, spread the fluoroplastic 8 on the carbon fiber 9, and put an air pressure bag on the fluoroplastic 8 7 Pressurize from the pressure port 10 to 0.6 MPa, and at the same time evacuate the middle of the fluoroplastic 8 and the carbon fiber 9 through the air nozzle 11, and at the same time heat to 80°C for 15 minutes, then raise the temperature to 130°C for 30 minutes, After the resin glue is cured, a single piece of carbon fiber outer cladding is obtained; after the single piece is formed, it is weighed, edge trimmed and shaped, and then enters the second mold assembly, such as figure 2 As shown, when assembling the pieces, use long carbon fiber pre-impregnated resin glue, and sew a carbon fiber reinforced beam 4 at the longitudinal position of the thickest part of the polyuretha...

Embodiment 2

[0019] Such as Figure 5 As shown, this embodiment describes the specific manufacture of carbon fiber reinforced beams. Commercially available carbon fiber filaments of type 3K are immersed in the prepared epoxy resin glue, and then circled around the top of the propeller positioning hole 5, and then stretched along the longitudinal direction of the thickness. Go to the head and turn back, go around the bottom of the propeller positioning hole 5 to form a skeleton, and then use a needle to sew the upper and lower "8" shapes with a distance of 20 to 30 mm on the skeleton, and sew the upper and lower carbon fiber wire skeletons tightly to form a carbon fiber reinforced beam 4. The composition of the prepared epoxy resin glue can be 100 parts of commercial model CELR-128 epoxy resin; 70 parts of H-316 type anhydride curing agent; 4 parts of 2102-CN type accelerator.

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Abstract

A technology for preparing the carbon fibre blade for the propeller of model airplane includes immersing carbon fibres in resin, loading them in mould, spreading a fluorine plastic layer, using air bag to press them while vaccumizing the space of carbon fibres, heating to 70-90 deg.C at same time, raising temp to 120-140 deg.C, holding the temp for 20-40 min for solidifying resin to obtain single sheet, preparing a reinforcing carbon fibre rib on a polyurethane foam, putting it between two said sheets, and hot perssing.

Description

technical field [0001] The invention relates to a composite method of carbon fiber aircraft model propeller blades. Background technique [0002] At present, the molding of carbon fiber model aircraft propellers is first foamed by polyurethane, and then the outer surface of the foam is manually coated with carbon fiber outer cladding. The resulting carbon fiber model aircraft propellers have rough appearance, poor finish and low efficiency. Contents of the invention [0003] The object of the present invention is to provide a carbon fiber model aircraft propeller blade with high bending strength and a bright surface as a mirror, which is fast in production speed and high in efficiency, and has a high bending strength and a mirror-like surface under the requirements of ensuring the size and weight of the product. Composite method. [0004] In order to achieve the above-mentioned purpose, a compound method of a carbon fiber aircraft model propeller piece designed by the pre...

Claims

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Application Information

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IPC IPC(8): B29C70/06
Inventor 张国志孙正月
Owner 张国志
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