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Direct penetrating microwave heating curing method for multi-directional carbon fiber reinforced composites

A technology for reinforcing composite materials and composite materials, which is applied in the field of composite material heating and forming, and can solve problems such as parts that cannot be heated by microwaves

Active Publication Date: 2019-08-27
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Description
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that multi-directional carbon fiber reinforced composite parts cannot be heated by microwaves, and to invent a direct penetration microwave heating and curing method for multi-directional carbon fiber reinforced composite materials

Method used

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  • Direct penetrating microwave heating curing method for multi-directional carbon fiber reinforced composites
  • Direct penetrating microwave heating curing method for multi-directional carbon fiber reinforced composites
  • Direct penetrating microwave heating curing method for multi-directional carbon fiber reinforced composites

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] Such as Figure 1-3 shown.

[0018] The composite material of this embodiment adopts 18 layers of continuous carbon fiber reinforced bismaleimide resin-based composite material, and the laying sequence is [0 / 45 / 90 / -45 / 0 / 45 / 90 / 0 / 45]. Firstly, a 0.01mm thick metal copper foil strip is pasted on the surface of the wave-transparent ceramic mold, and the copper foils are parallel to each other. After the area where the composite material is placed on the surface of the mold is covered with copper foil, place a non-porous release cloth. The laying area of ​​the release cloth is larger than that of the composite material and the metal grid array, so as to ensure mutual insulation between the composite material and the metal grid array. Secondly, the continuous carbon fiber-reinforced bismaleimide resin-based composite material with multi-directional ...

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Abstract

The invention discloses a direct-penetration microwave heating curing method for a multidirectional carbon fiber reinforced composite material. The direct-penetration microwave heating curing method is characterized in that perpendicular-penetration microwaves are stimulated inside a part made of the multidirectional carbon fiber reinforced composite material for directly heating and curing the part. In order to solve the problem that a multidirectional laminating carbon fiber reinforced composite material cannot be subjected to microwave heating and curing, the invention discloses a method for directly heating the multidirectional laminating carbon fiber reinforced composite material through perpendicular-penetration microwaves (microwaves with electric fields in a part normal direction and a transmission direction inside the part). A metal grating is placed on the surface of the part made of the multidirectional carbon fiber reinforced composite material. Microwaves in a resonant cavity stimulate perpendicular-penetration microwaves inside the part made of the composite material under action of the metal grating, so that the multidirectional carbon fiber reinforced resin based composite material is directly penetrated, and therefore, part curing is completed. The direct-penetration microwave heating curing method solves the problem that the multidirectional carbon fiber composite material cannot be subjected to microwave heating, so that theoretical basis and technical support are provided for industrial application of the microwave heating curing technology of the composite material.

Description

technical field [0001] The invention relates to a heating and forming technology for composite materials, in particular to a microwave heating and curing technology for composite materials, in particular to a microwave heating and curing method for multi-directional carbon fiber reinforced composite materials. Background technique [0002] Advanced composite materials have many excellent characteristics such as high specific strength and specific modulus, good fatigue resistance, good corrosion resistance and good overall formability. The extensive application of composite materials on aircraft can not only significantly reduce the structural weight of the aircraft, but also improve aircraft performance. It can also greatly reduce the number of parts, simplify the assembly process, and shorten the manufacturing cycle. At present, composite materials have been widely used in the main load-bearing parts of wings and fuselages, and more and more are used in complex curved surfa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C35/08B29C70/54
Inventor 李迎光李楠垭周靖
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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