Uniform temperature distribution method and curing device for microwave-pressure curing composite material

A composite material, uniform distribution technology, applied in the field of composite material curing and forming, can solve the problems of poor uniformity, high energy consumption, low heating efficiency, etc., and achieve the effect of eliminating heating unevenness, improving temperature uniformity, and ensuring quality

Active Publication Date: 2014-11-12
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of low heating efficiency, high energy consumption and poor uniformity in existing composite material microwave curing forming devices, to invent a method for uniform temperature distribution of microwave-pressure curing composite materials, and to design a temperature distribution method at the same time Uniform complete curing unit

Method used

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  • Uniform temperature distribution method and curing device for microwave-pressure curing composite material
  • Uniform temperature distribution method and curing device for microwave-pressure curing composite material
  • Uniform temperature distribution method and curing device for microwave-pressure curing composite material

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Effect test

Embodiment 1

[0027] Such as Figure 1-3 shown.

[0028] A method for uniform temperature distribution of microwave-pressure-cured composite materials. Firstly, a composite material component 14 is placed in a polygonal cavity 9, so that microwave energy is incident on the surface and interior of the composite material 14 after multiple reflections in the polygonal cavity 9 ; At the same time, the gas pressure is provided by the pressure vessel to act on the surface of the composite material to compact the material; when the measured temperature of the composite material 14 shows a temperature difference (generally 5°C-10°C), heat or cool the gas in the pressure vessel 1 Medium, and the gas medium is circulated through the electromagnetic shielding ventilation window provided on the polygonal cavity 9, and convective heat exchange occurs with the composite material, so as to improve the temperature uniformity of the composite material member 14.

Embodiment 2

[0030] A microwave-pressure composite curing device with uniform temperature distribution, which includes a pressure vessel 1, a curing chamber 9 installed in the pressure vessel 1, a vacuum generating device and a microwave generating device, such as figure 1 As shown, the vacuum generating device passes through the pressure vessel 1 and the curing chamber 9 through the vacuum tube 8 and communicates with the vacuum bag 15 of the rotary curing workpiece 14, and the microwave generated by the microwave generating device is sent into the curing chamber 9 through the microwave transmission line 7, and the vacuum The bag 15 is installed on the mold 13, the mold 13 is installed on the stage 12, the stage 12 is installed on the guide rail 11, and the guide rail 11 is installed in the curing cavity 9, and the inner cavity cross section of the curing cavity 9 is Polygonal structures that can reflect microwaves multiple times, among which the hexagonal shape is the best, can also be in...

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Abstract

The invention discloses a uniform temperature distribution method and a complete set of curing device for a microwave-pressure curing composite material. The method is characterized in that a polygon cavity is used in a pressure container tank, so that the microwave can be reflected for multiple times in the cavity and the uniformity of the microwave entering the composite material is improved; meanwhile, waveguide windows are formed in the front and the back of the cavity, so that a gas medium can flow into the cavity and carry out convection heat transfer with the composite; the temperature uniformity of the material can be further improved; and the pressure is applied by the air in the pressure container when the composite material is heated and cured. The device mainly comprises a polygon cavity and an electromagnetic shielding window. Through the uniform temperature distribution method and the curing device for the microwave-pressure curing composite, the temperature uniformity of a composite part can be improved, and the buckling deformation of the composite material cured by the microwave can be reduced.

Description

technical field [0001] The invention relates to a composite material solidification and forming technology, in particular to a technology for rapidly solidifying and forming a composite material by using microwave heating, in particular to a microwave-pressure curing composite material uniform temperature distribution method and a complete set of curing device. Background technique [0002] As we all know, fiber-reinforced resin-based composites have the advantages of high specific strength and specific stiffness, light weight, corrosion resistance, and fatigue resistance, and have been widely used. [0003] Microwave heating and curing technology uses low-frequency electromagnetic waves to penetrate materials, convert microwave energy into heat energy, and uniformly heat the inside and outside of materials. Microwave heating and curing has the characteristics of short production time, easy temperature control, and low energy consumption. It is suitable for forming large-sc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/44B29C70/54
CPCB29C70/443B29C2035/0855
Inventor 李迎光李楠垭杭翔周靖吴晓春
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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