3D printing process research of magnetron thixotropic fluid
Aiming at the problem that the existing magnetically controlled intelligent fluid cannot be applied to 3D printing,this paper prepared a new magnetically controlled thixotropic fluid which can realize reversible sol-gel transformation under the control of magnetic field and studied its printing process.Printing samples with different proportions were prepared using whole-system loss lubricating oil,organobentonite and Fe3O4 particles,and a direct writing 3D printing experimental platform was established to study its printability.Rheological experiments show that the more the content of organobentonite in the magnetically controlled thixotropic fluid,the stronger the thixotropy and the more obvious the shear thinning.The stronger the magnetic field is,the higher the yield stress is and the higher the storage modulus is.According to the experimental results of printing under the three extrusion methods,the structure printed by the uniform recovery extrusion method has the highest resolution and maximum height.This study shows that the magnetically controlled thixotropy fluid has good printable ability in the extrusion device designed according to its rheological properties,which lays a foundation for the application of this material in flexible sensing,design and drive of soft robot personalized complex structures,microfluidic detection and other fields.
magnetic field regulationthixotropic fluids3D printingprinting processrheological propertie
NETL
NSTL
万方数据
维普
