Microwave and low-energy electron beam combined curing method for resin-based composite material
A technology of electron beam curing and composite materials, which is applied in the field of resin-based composite material manufacturing, can solve the problems of enlarged surface concave-convex topography, low glass transition temperature, and reduced porosity, so as to improve glass transition temperature and energy consumption. Low, the effect of improving adhesive performance and interlayer strength
Inactive Publication Date: 2012-11-28
XI AN JIAOTONG UNIV
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[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and provide a method for synergistic curing of resin-based composite materials by microwave and low-energy electron beams. The rapid temperature rise promotes the thermal expansion of the fiber material under high temperature conditions, and the surface concave and convex features become larger; the thermal movement of the resin molecules is increased by heating to reduce its viscosity, so that the resin can be better filled through sufficient flow before low-energy electron beam curing The surface of the fiber is uneven and bonded to effectively reduce the porosity; in addition, the curing temperature is increased by microwave heating, thereby improving the molecular fluidity of the resin, which can also better solve the problem of low glass transition temperature of the low-energy electron beam curing resin.
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[0020] The present invention is described in further detail below in conjunction with accompanying drawing:
[0021] refer to figure 1 , figure 2 with image 3 The microwave and low-energy electron beam synergistic curing method of this kind of resin-based composite material is realized in this way: firstly, the composite material is heated by microwave equipment to reduce the viscosity of the resin on it and fully flow and fill the pores; after that, the composite material is Curing and molding by low-energy electron beams.
[0022] Further, the above-mentioned composite material is a resin-based carbon fiber / glass fiber reinforced material, the microwave output frequency of the microwave equipment is 2450±50MHz, the microwave heating time of the composite material is 2-60s so that the resin material can fully flow, and the energy of the low-energy electron beam is 150KeV-300KeV.
[0023] The specific method is to heat the resin-based composite material through a microwav...
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The present invention discloses a curing method for a resin-based composite material, which comprises the following steps: carrying out microwave heating on a resin-based composite material prepreg tape to promote good wetting property of the resin and fibers; and curing and shaping the preheated resin-based composite material by a low-energy electron beam curing device. The microwave and low-energy electron beam combined curing method for a resin-based composite material has the advantages of low energy consumption, high efficiency, high flexibility and good effects on improving the interfacial bonding property and interlayer strength of the composite material.
Description
technical field [0001] The invention belongs to the field of resin-based composite material manufacturing, and relates to a resin-based composite material curing method, in particular to a resin-based composite material microwave and low-energy electron beam synergistic curing method. Background technique [0002] Due to the characteristics of high specific modulus, high specific strength, strong designability, good fatigue resistance and corrosion resistance, resin-based composite materials are widely used in aerospace, shipbuilding, automobile and energy fields. As a kind of radiation curing, electron beam curing has the advantages of fast curing speed at room temperature, low residual stress of components, easy storage of materials, low energy consumption in the molding process, and low mold cost compared with traditional thermal curing methods, especially low-energy electron beam curing. Compared with the problems of high maintenance, shielding and manufacturing costs ca...
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IPC IPC(8): C08J3/28B29C35/08
Inventor 段玉岗李涤尘迪力穆拉提·阿卜力孜卢秉恒
Owner XI AN JIAOTONG UNIV