I. Introduction

Carbon fibre composites, due to their unique properties such as high strength, light weight and corrosion resistance, have a wide range of applications in many fields. With the continuous development of science and technology, the demand for carbon fibre composites continues to grow, and its manufacturing process has become more and more mature.

Second, the manufacturing process of carbon fibre composites

1. Preparation of carbon fibre

The production of carbon fibre mainly consists of two stages: raw silk preparation and carbonisation. Polyacrylonitrile (PAN) or viscose fibres are usually used for the preparation of precursors. These precursors undergo a series of complex processes such as spinning, pre-oxidation, carbonisation, graphitization, etc. to finally form carbon fibres. This process requires precise control of temperature, pressure, atmosphere and other conditions to ensure the performance of the final product.

2. Preparation of Matrix

Matrix is another important part of carbon fibre composites, which is mainly divided into two categories: resin-based and metal-based. Resin matrix mainly adopts thermosetting or thermoplastic resin, which has the advantages of light weight and corrosion resistance. Metal matrix, on the other hand, usually adopts lightweight metals such as aluminium and titanium, which have the characteristics of high strength and high stiffness. The preparation process of the matrix also varies according to its use and performance requirements.

3. Forming process of carbon fibre composites

The moulding processes of carbon fibre composites mainly include hand-lay-up moulding, moulding, winding, resin transfer moulding (RTM), vacuum-assisted resin transfer moulding (VARTM) and so on. The selection of these processes mainly depends on the shape, size and performance requirements of the product. For example, the hand-lay-up moulding process is suitable for the production of parts with complex shapes, while the moulding process is suitable for the production of large-scale and high-precision parts.

Performance and Application of Carbon Fibre Composites

The excellent performance of carbon fibre composites is mainly due to its unique structure and preparation process. It has high specific strength, high specific modulus, corrosion resistance, high temperature resistance, low coefficient of thermal expansion and other characteristics, so it has a wide range of applications in aerospace, automotive, sports equipment, construction and other fields. For example, in the aerospace field, carbon fibre composites can be used to manufacture aircraft fuselage, wings and other components to reduce weight and improve performance. In the automotive field, carbon fibre composites can be used to manufacture body, chassis and other components to improve the strength and stiffness of the vehicle. In the field of sports equipment, carbon fibre composites can be used to manufacture tennis rackets, bicycle frames and other sports equipment to improve the performance of athletes. In the field of construction, carbon fibre composites can be used to manufacture bridges, building structures, etc. to improve the seismic capacity and stability of buildings.

IV. CONCLUSION

As a high-performance material, the manufacturing process of carbon fibre composites involves several complex processes and factors. With the continuous development of science and technology, new preparation techniques and methods are emerging, which makes the performance and application areas of carbon fibre composites to be further expanded. In the future, carbon fibre composites will play an important role in more fields and create a better life for human beings.