A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation method for uniform gradient-colour zirconium oxide porcelain blocks
The invention relates to zirconium oxide porcelain blocks for dental prosthesis, and aims at providing a preparation method for uniform gradient-colour zirconium oxide porcelain blocks. The preparation method comprises the following steps: (1) weighing the raw materials of CeO2, Fe2O3, ZrO2, Y2O3, Pr6O11 and Er2O3; (2) adding a polymer binder in the dried mixed powder, and granulating; (3) shaping the granulated material by a die by means of dry pressing to obtain porcelain block blanks; (4) carrying out isostatic cool pressing on the shaped porcelain block blanks; (5) pre-sintering the porcelain block blanks after the isostatic cool pressing; (6) flatly placing the pre-sintered porcelain block blanks in a dyeing container and dyeing, wherein the depth of soaking solution in the dyeing container is 0.1-5mm, the dyeing time is 1-3min, and the used dyeing solution comprises 1-5wt% of polyethylene glycol, 0.1-3wt% of erbium oxide, 0.5-10wt% of praseodymium oxide and the balance of ultrapure water; and (7) sintering the dyed porcelain blocks to obtain the uniform gradient-colour zirconium oxide porcelain blocks for dentistry. The porcelain blocks disclosed by the invention are stable and uniform in colouring, and continuous and uniform in colour changes.
Preparation method for uniform gradient-colour zirconium oxide porcelain blocks
The invention relates to zirconium oxide porcelain blocks for dental prosthesis, and aims at providing a preparation method for uniform gradient-colour zirconium oxide porcelain blocks. The preparation method comprises the following steps: (1) weighing the raw materials of CeO2, Fe2O3, ZrO2, Y2O3, Pr6O11 and Er2O3; (2) adding a polymer binder in the dried mixed powder, and granulating; (3) shaping the granulated material by a die by means of dry pressing to obtain porcelain block blanks; (4) carrying out isostatic cool pressing on the shaped porcelain block blanks; (5) pre-sintering the porcelain block blanks after the isostatic cool pressing; (6) flatly placing the pre-sintered porcelain block blanks in a dyeing container and dyeing, wherein the depth of soaking solution in the dyeing container is 0.1-5mm, the dyeing time is 1-3min, and the used dyeing solution comprises 1-5wt% of polyethylene glycol, 0.1-3wt% of erbium oxide, 0.5-10wt% of praseodymium oxide and the balance of ultrapure water; and (7) sintering the dyed porcelain blocks to obtain the uniform gradient-colour zirconium oxide porcelain blocks for dentistry. The porcelain blocks disclosed by the invention are stable and uniform in colouring, and continuous and uniform in colour changes.
Preparation method for uniform gradient-colour zirconium oxide porcelain blocks
LIU MOUSHAN (author)
2015-09-16
Patent
Electronic Resource
English
| European Patent Office | 2023
Preparation method of low-temperature-aging-resistant zirconium oxide porcelain block
| European Patent Office | 2024
Gradient zirconium oxide ceramic cutter material and preparation method thereof
| European Patent Office | 2021
| European Patent Office | 2021