23 Jul Biodegradation performance and strength controllable biological composite ceramic bracket and preparation method thereof
Abstract
The invention belongs to the field of biomedical materials and additive manufacturing, and relates to a biological composite ceramic bracket with controllable degradation performance and strength anda preparation method thereof. The method comprises the following steps: S1, taking hydroxyapatite powder, beta-calcium phosphate powder and micron-sized biological glass powder, wherein the total massis m; mixing different photocurable resin monomers and/or prepolymers thereof in a predetermined ratio, adding a plasticizer and a dispersant, ultrasonically mixing, adding a photoinitiator, a polymerization inhibitor, a release agent and a lubricant, and fully mixing to obtain a solvent; s2, adding the three powders into a solvent in stages, stirring, and performing vacuum ball milling to obtainprinting slurry; s3, performing DLP 3D printing and/or photocuring by using printing slurry to obtain a bioceramic biscuit; and S4, degreasing and sintering the bioceramic biscuit to obtain a finished product of the biocomposite ceramic bracket. The method can obtain composite bioceramics with excellent mechanical properties and degradation properties, and the composite bioceramics can be appliedto bone tissue engineering technology.
Year: 2020
Country: CN
Doc No: 110668807