Graphene/glass fibre reinforced polycarbonate composite material and preparation method thereof

Abstract

The invention provides a graphene / glass fibre reinforced polycarbonate composite material which is prepared from the following ingredients in parts by weight: 60-90 parts of polycarbonate, 5-20 parts of epoxy resin, 0.01-5 parts of graphene, 5-20 parts of glass fibre, 0.1-1 part of a silane coupling agent, 5-10 parts of ethanol, 0.05-2 parts of an antioxidant and 0.5-3 parts of a compatible flexibilizer. The invention also discloses a preparation method of the graphene / glass fibre reinforced polycarbonate composite material. The graphene / glass fibre reinforced polycarbonate composite material prepared by the method not only is simple in preparation process, but also is obviously improved in thermal stability, strength and toughness according to experimental results, a glass fiber revealed phenomenon is effectively eliminated, and the actual application of a polycarbonate composite material is expanded.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a graphene / glass fiber reinforced polycarbonate composite material and a preparation method thereof. Background technique [0002] Polycarbonate is a polymer of bisphenol A, which belongs to thermoplastic resin. It is widely used as engineering plastic material, exhibits excellent impact resistance, electrical properties and molding properties, maintains physical properties in a wide temperature range, and has Self-extinguishing. However, it is difficult to use polycarbonate in small-sized and more complicated housings of electric and electronic products due to the disadvantage of poor processability of polycarbonate. In order to solve this problem, the industry adopts the method of blending polycarbonate with other types of resins to improve the processability of the material while maintaining high impact strength. Glass fiber reinforced composite material is a composite mater...

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Problems solved by technology

[0004] Relevant studies have shown that the addition of graphene makes polycarbonate composites have excellent mechanical, thermal, and electrical properties. However, in the above preparation methods, directly incorporating graphene into the matrix is ​​not conducive to the development of graphene in the polycarbonate matrix. Dispersion and compatibility; while preparing composite materials by graphene in-situ polymerization, coupling modification and other methods, the actual production process is cumbersome, and the shape and performance changes of graphene are difficult to control

Graphene with a complete structure is composed of benzene rings, with high chemical stability, inert surface, and weak interaction with other media; and there is strong van der Waals force between graphene sheets, which is easy to agglomerate, which greatly limits its research and application; how to use efficient A simple and easy-to-implement method to achieve good dispersion of graphene in polycarbonate materials is the key to the preparation of high-performance polycarbonate / graphene nanocomposites

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