Significantly improve the interlayer and in-plane properties of needled fabrics by novel none-felt needling technology

An attempt has been made to explore the possibility of manufacturing high performance needled fabrics by none-felt needling technology. The concept of half-cut cloth and none-felt needling were proposed. Experiments were designed to study the influence of different half-cut cloth and different base cloth on the structure parameters of the none-felt needled fabrics, as well as the interlayer peeling and in-plane tensile properties. It was observed that the needled fabrics prepared by none-felt needling technology depicted considerable enhancement in volume density, interlayer peeling strength and in-plane tensile strength. The fabric structure, density and half-cut width of half-cut cloth, and the density of the base cloth presented a significant influence on the mechanical properties of none-felt needled fabrics. The study established the possibilities of developing new high density needled fabrics, which greatly improved interlayer and in-plane performance. The none-felt needled fabric is expected to be used for high-speed aircraft radome materials.

Automated summary

The study found that fabrics prepared by non-felt needling technology showed considerable enhancement in volume density, interlayer peeling strength, and in-plane tensile strength. Fabric structure, density, half-cut width of half-cut cloth, and the density of the base cloth significantly influenced the mechanical properties of non-felt needled fabrics.