Study on warpage deformation of micro extrusion 3D Printing Bone Tissue Engineering Scaffold and Its Optimization Method

Abstract

Abstract Spinal degeneration is a major disease that affects human health. Titanium alloy, PECK, and other nondegradable materials are currently used in interbody fusion cages. It is important to develop a biodegradable biomaterial. Taking the warpage analysis in micro extrusion 3D printing of tricalcium phosphate (TCP) and polycaprolactone (PCL) mixed materials as an example, the theoretical model of 3D printing part deformation is established and studied, the influence of different stress resultant forces on warpage is analyzed. The influence of layer height, ambient temperature, and other process parameters on the warpage of the finished product is quantitatively analyzed. It is proposed to increase the printing temperature appropriately and print layer thickness. The printing warpage can be reduced by reducing the end face length.