Carbon fiber and glass fiber reinforced epoxy resin composite material and preparation method thereof

Abstract

The invention relates to a composite material, comprising M carbon fiber reinforcement layers, N glass fiber reinforcement layers, and bonding layer(s) arranged between the carbon fiber reinforcementlayers and the glass fiber reinforcement layers, wherein M is more than or equal to 1, N is more than or equal to 1; epoxy resin is used as matrix resin of the carbon fiber reinforcement layers and the glass fiber reinforcement layers; the bonding layer(s) is / are prepared from a polymer, polymeric microspheres and organic-inorganic composite microspheres, wherein the weight of the polymer in the bonding layer(s) accounts for 50% or above of the weight of the bonding layer(s); the polymer is a cross-linked polymer with a melting point lower than 110 DEG C; the matrix resin of the carbon fiber reinforcement layers and the glass fiber reinforcement layers is epoxy resin. The bonding layer(s) in the composite material provided by the invention improve(s) the adhesion of the carbon fiber reinforcement epoxy resin and the glass fiber reinforcement epoxy resin, so that glass fibers and carbon fibers can effectively apportion the stress when the composite material is stressed, and the tensilestrength of the carbon fiber and glass fiber hybrid reinforced material is further effectively improved.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a carbon fiber and glass fiber reinforced epoxy resin composite material and a preparation method. technical background [0002] Fiber materials have the characteristics of low density, high strength and modulus, high temperature resistance, and chemical corrosion resistance. They are often filled into matrix resin as reinforcing materials to prepare fiber reinforced materials, which can greatly improve the tensile strength, bending strength and impact of plastics. Strength and other mechanical properties are widely used in aerospace, transportation, sports, wind power and other fields. [0003] Among them, carbon fiber and glass fiber are mostly used. Compared with glass fiber, carbon fiber has lower density, higher strength and modulus. Carbon fiber reinforced composite materials have better performance and a wider range of applications. However, the price of carb...

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Problems solved by technology

However, there is a large difference in the mechanical properties of carbon fiber and glass fiber, resulting in uneven internal stress of the carbon fiber and glass fiber hybrid reinforced composite material, and its mechanical properties cannot meet the design requirements.

For example, patent CN201310466774.9 proposes a method for preparing a reinforced composite material using carbon fiber and glass fiber together with glass fiber. The mechanical properties of the carbon fiber and glass fiber reinforced composite material prepared by this method are comparable to those of pure glass fiber. The improvement, but the increase is not large, there is still a certain gap with pure carbon fiber reinforced materials, and it cannot completely replace the role of carbon fiber reinforced materials

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