Abstract: Since existing honeycomb fabric with density gradient is still formed by bonding layers of different densities, there are some problems such as discontinuous fabric structure and easily-separated interface. By using textile technology, integral three-dimensional honeycomb fabric with density gradient can be directly prepared. Such fabric with connections between layers and gradual density variation can be obtained by weave design and it is mainly reflected in the gradual change in the size of honeycomb hole along the thickness direction and warp-wise direction of the fabric. Finally an 8-layer three-dimensional honeycomb fabric with density gradient was successfully woven, which has obvious density gradient and the diameter of honeycomb hole between two gradients is about 2∶1.

Key words: density gradient; honeycomb size; negative gradient; cohesive gradient