Direct-writing forming method of precursor conversion ceramic

A technology of precursor conversion and direct writing molding, applied in ceramic molding machines, ceramic products, applications, etc., can solve the problems of increasing the controllability of finished product performance, high precision, low repetition rate, high cost, etc., and achieve excellent rheology and curing ability, simplified process route, wide range of effects
CN107651963AActive Publication Date: 2018-02-02CENT SOUTH UNIV
3 Cites 22 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CENT SOUTH UNIV
Publication Date
2018-02-02

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention belongs to forming range of three-dimensional structure, and particularly relates to a direct-writing forming method of printing and converting a precursor into ceramic. The method includes: using a ceramic precursor as a solute, dissolving the ceramic precursor in liquid-state organic matter, stirring raw materials to obtain ink with certain viscoelasticity, and putting the ink intoa needle cylinder; through an air pressure controller and according to a set program, printing out a three-dimensional structure on a substrate layer by layer, and carrying out precursor conversion to obtain ceramic with a complex three-dimensional structure. The direct-writing forming method overcomes the defect that existing direct-writing forming ceramic suspensions are prone to nozzle blockage, low in continuity and unstable in slurry in the process of forming. The designed slurry is simple and reasonable in composition, high in rheological controllability and convenient for large-scale industrial application. A three-dimensional periodic structure prepared by the method is wide in scale range, and decimeter-scale, centimeter-scale, millimeter-scale, micrometer-scale or nanometer-scale control can be realized simply through adjusting aperture of a needle head.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the molding range of a three-dimensional structure, and in particular relates to a method for direct-writing molding of a precursor-transformed ceramic. Background technique

[0002] The concept of Direct Ink Writing was first proposed by Joseph Cesarano III of Sandia National Laboratory in the United States [Lewis, J.A., J.E.Smay, et al.. Direct Ink Writing of Three-Dimensional Ceramic Structures. Journal of the American Ceramic Society, 2006,89(12):3599-3609.] proposed. This technology first designs the required three-dimensional structure pattern with the help of computer-aided (CAD), and then automatically controls the suspension delivery device consisting of a needle cylinder and a needle nozzle installed on the Z axis through the computer to transfer the suspension in the needle cylinder from Extrude the linear fluid of precise size from the nozzle, and at the same time, the X-Y axis moves according to the trajectory set...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More