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Composite material microwave indirect heating mold and method

A technology for composite materials and moulds, which is applied in the field of microwave indirect heating molds and curing of composite materials, microwave heating molds and curing of composite materials, which can solve the problems of low heating efficiency, achieve short curing time, low energy consumption, and improve microwave curing efficiency Effect

Active Publication Date: 2018-08-24
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems that microwaves are difficult to penetrate and heat multi-directional laminated carbon fiber reinforced resin-based composite materials, and the heating efficiency of microwave-cured glass fiber-reinforced resin-based composite materials is low, and to invent a microwave indirect heating mold and curing method for composite materials

Method used

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  • Composite material microwave indirect heating mold and method

Examples

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Effect test

Embodiment 1

[0020] In this example, 24 layers of carbon fiber-reinforced Shuangma resin composite laminates are used as the composite material part (6) to be cured, and the layering sequence is [0 / +45 / -45 / 90] 5 , the part size is 300mm×300mm×3mm, and the curing temperature is 200°C. The microwave indirect heating mold consists of a supporting truss (1), a wave-transmitting panel (2), a heat insulation layer (3) and a wave-absorbing surface (4). Among them, the support truss (1) is welded by stainless steel pipes with an outer diameter of 40mm and an inner diameter of 36mm; the wave-transparent panel (2) is made of wave-transparent ceramics, with a size of 500mm×500mm×30mm and a groove size of 400mm×400mm ×12mm, the corner around the groove is a quarter arc with a radius of 8mm; the support truss (1) and the ceramic wave-transparent panel (2) are mechanically connected by threads, and the surface of the connection is smooth, without sharp corners and Burrs; the heat insulation layer (3) i...

Embodiment 2

[0023] In this example, 200 layers of glass fiber-reinforced epoxy resin composite material laminates are used as the composite material part (6) to be cured, and the layering sequence is [0 / 90] 100 , the part size is 300mm×300mm×20mm, and the curing temperature is 120°C. The microwave indirect heating mold consists of a supporting truss (1), a wave-transmitting panel (2), a heat insulation layer (3) and a wave-absorbing surface (4). Among them, the supporting truss (1) is welded by stainless steel pipes with an outer diameter of 40mm and an inner diameter of 36mm; The size of the groove is 400mm×400mm×12mm, and the corner around the groove is a quarter arc with a radius of 8mm; the support truss (1) and the glass fiber reinforced epoxy resin composite wave-permeable panel (2) are threaded mechanically The connection, the surface of the connection is polished smoothly, without sharp corners and burrs; the heat insulation layer (3) is composed of asbestos cloth with a thicknes...

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Abstract

The invention provides a composite material microwave indirect heating mold and a method. Microwave is absorbed by adopting the wave absorbing type surface of the microwave indirect heating mold, andthe microwave energy is converted into heat energy for heating and solidifying composite material parts. The composite material microwave indirect heating mold can realize the multi-direction paving carbon fiber reinforced resin-based composite materials, and can effectively heats and cures the glass fiber reinforced resin-based composite materials; and the composite material microwave indirect heating mold has the advantages of being short in solidifying time, low in energy consumption and the like, the microwave solidifying efficiency of the composite material parts is greatly improved, anda theoretical basis and a technical support are provided for industrial application of the composite material microwave solidifying technology.

Description

technical field [0001] The invention relates to a composite material heating mold and a curing method, in particular to a composite material microwave heating mold and a curing method, in particular to a composite material microwave indirect heating mold and a curing method. 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 surface parts such as air intakes, and ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C35/02B29C70/44
CPCB29C35/02B29C70/44
Inventor 李迎光周靖
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS