High-temperature-resistant high-colorability praseodymium yellow material preparation method
A technology of praseodymium yellow material and colorability, which is applied in the field of preparation of praseodymium yellow material, can solve the problems of easy fading, poor temperature resistance, and poor temperature resistance performance, so as to overcome application bottlenecks, reduce production costs, and have good tinting strength Effect
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[0023] Specifically, please refer to figure 1 As shown, the preparation method of the modified fused zirconia in the embodiment of the present invention includes:
[0024] Grinding the fused zirconia particles into zirconia powder with a particle size of 3-5 μm;
[0025] Sodium and beryllium are mixed according to the weight ratio of 6:5, followed by high-temperature melting, rapid cooling in water, washing to neutrality, drying, and grinding to obtain an active adhesive with a particle diameter of 1-1.5 μm. The high-temperature melting temperature is 1400°C;
[0026] The zirconia powder and the active binder are mixed, and the amount of the active binder is 0.2wt% of the total amount of the mixture, and then treated at 300° C. and 3 MPa for 20 hours to obtain modified fused zirconia.
[0027] In the above examples, the specific surface area of the zirconia powder can be measured by the multi-point BET method, and the particle size can be observed and controlled by a laser...
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[0038] Grinding the fused zirconia particles into zirconia powder with a particle size of 3-5 μm;
[0039] Sodium and beryllium are mixed according to the weight ratio of 6:5, followed by high-temperature melting, rapid cooling in water, washing to neutrality, drying, and grinding to obtain an active adhesive with a particle diameter of 1-1.5 μm. The high-temperature melting temperature is 1400°C;
[0040] The zirconia powder and the active binder are mixed, and the amount of the active binder is 0.2wt% of the total amount of the mixture, and treated at 300°C and 3MPa for 20h, so that the zirconia powder and the active binder are completely bonded. Together, improve the reactivity of fused zirconia to obtain modified fused zirconia;
[0041] Fully mix the modified fused zirconia and other auxiliary raw materials of the praseodymium yellow material, put them in a bowl and heat them at a heating rate of 180°C / h for calcination, when the calcination temperature reaches 1050°C, k...
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