| abstract |
The invention provides a method for preparing a high composite porosity bone scaffold material by 3D printing, which belongs to the field of additive manufacturing (3D printing). The invention is based on the 3D gel technology and the pore-forming agent method. First, the cheap pore-forming agent and the ceramic powder are mixed uniformly, and the low-viscosity and high-solid content slurry suitable for printing is prepared in combination with the gel system, and the 3D gel is used for printing. The embryo body with macroscopic visible pores is prepared, and then through drying, degreasing, sintering, the pore-forming agent is decomposed, oxidized and discharged into the air to form microscopic pores, and finally a high-porosity bone scaffold composite material is prepared. The invention can precisely control the size, shape and distribution of macroscopic pores, realizes the preparation of low-cost and high-composite porosity bone tissue scaffold material, and has simple process and low cost. |