Three-dimensional braided composite materials have good application prospects, and domestic research levels need to be further improved.

Three-dimensional braided composite materials use three-dimensional braiding technology to first weave reinforced fiber bundles into prefabricated parts with the required structural shape. Three-dimensional braided composite materials were developed in the 1980s. As a new type of composite material, three-dimensional braided composite materials not only have the characteristics of high specific strength and high specific modulus of traditional composite materials, but also have the characteristics of being difficult to delaminate and having strong structural integrity. , impact resistance, strong designability and other characteristics, it is suitable for processing complex-shaped special-shaped high-performance fiber structural parts and connectors.

According to the “2022-2027 Three-dimensional Braided Composite Materials Industry Market In-depth Research and Investment Prospects Forecast Analysis Report released by the Industrial Research Center , Three-dimensional braided composite materials are one of the subdivisions of composite materials. In recent years, with the continuous development of science and technology, three-dimensional braided composite materials have shown strong competitiveness with their excellent performance. At this stage, three-dimensional woven composite materials have been widely used in aerospace, household appliances, medical equipment, sporting goods, automobile manufacturing, military equipment, rail transportation and other fields.

Three-dimensional woven composite materials mostly use liquid molding processes for dipping and curing, including resin transfer molding (RTM) process, resin film infiltration (RFI) process, vacuum-assisted resin infiltration (VARI) process, etc. Among them, the RTM process is derived from the wet lamination and injection molding processes. It can produce composite components with high precision, low porosity, and high fiber content. It is one of the main manufacturing technologies for three-dimensional braided composite materials.

There are many three-dimensional woven composite parts, involving U-shaped, T-shaped, X-shaped, rice-shaped, I-shaped, zigzag, honeycomb, sphere, truncated cone and other special-shaped structures. In manufacturing Under the background of industrial intelligence and lightweight machinery, the application prospects of three-dimensional braided composite materials are good.

The research on three-dimensional braided composite materials in my country started relatively late. Compared with developed countries such as Europe and the United States, domestic three-dimensional braided composite materials lag behind in theoretical research, experimental research, structural parameters, detection technology, etc. Therefore, the current commercial application of three-dimensional braided composite materials in my country is still less.

Three-dimensional braided composite materials are one of the popular research directions in the engineering community. In China, institutions and enterprises engaged in the research and production of three-dimensional braided composite materials include China Textile Science Research Institute Co., Ltd., Beijing Bai Ruiding Technology Co., Ltd., and Tianjin University of Technology Composite Materials Research Institute, Yunlu Composite Materials (Shanghai) Co., Ltd., etc.

Industry analysts said that my country’s three-dimensional braided composite material industry started late, and the research level and testing technology are still lagging behind the international advanced level. animal. Three-dimensional braided composite materials are suitable for processing high-performance special-shaped parts, and their downstream applications involve aerospace, automobile manufacturing, household appliances and other fields. With the development of intelligence and automation in my country’s manufacturing industry, the application fields of three-dimensional braided composite materials are expected to be further expanded.