Abrasion-resistant ceramic material and preparation method and application thereof

Abstract

The invention discloses an abrasion-resistant ceramic material and a preparation method and application thereof. The abrasion-resistant ceramic material is prepared from the following raw materials inparts by weight: 11 to 19 parts of zirconium oxide, 1 to 5 parts of dimeticone, 15 to 25 parts of levulinic acid, 22 to 30 parts of vermiculite, 3 to 7 parts of propylene carbonate, and 3 to 7 partsof ethyl cellulose. The preparation method comprises the following steps of mixing and grinding the zirconium oxide, the vermiculite and the ethyl cellulose, adding a levulinic acid solution, heating,and stirring under the sealing condition, so as to obtain a mixture A; adding the dimeticone and the propylene carbonate into the mixture A, cooling, stirring under the sealing condition, heating andstirring, treating by ultrasonic waves, centrifuging and separating, obtaining precipitate, washing and drying, preparing into a blank, firing and cooling, so as to obtain the ceramic material. The abrasion-resistant ceramic material has the advantages that the porosity is reduced, the mechanical property is improved, the good breaking toughness and bending strength are realized, the mechanical property is good, the chemical stability is strong, the biocompatibility is excellent, the color is also completely consistent with the color of teeth of a human body, and the simulation degree is veryhigh.

Description

technical field

[0001] The invention relates to the technical field of materials, in particular to a wear-resistant ceramic material and its preparation method and application. Background technique

[0002] At present, there are many kinds of dental ceramics used clinically, mainly including alumina-based ceramics, glass-based ceramics and zirconia-based ceramics. Because the main components of each ceramic are different, their physical and chemical properties are also different. Among them, zirconia stands out among many dental all-ceramic materials due to its excellent mechanical properties, which greatly broadens the indications of all-ceramic restorations. However, the amount of zirconia used is high and the cost is high. In order to reduce the amount used, other components are added. Among the added ingredients are vermiculite, etc., but due to the particularity of its structure, vermiculite expands after high temperature treatment and has good thermal insulation perfo...

Examples

Embodiment 1

[0022] In an embodiment of the present invention, a wear-resistant ceramic material includes the following raw materials: 11 kg of zirconia, 1 kg of simethicone, 15 kg of levulinic acid, 22 kg of vermiculite, 3 kg of propylene carbonate, and 3 kg of ethyl cellulose.

[0023] Mix levulinic acid with 8.5 times the mass of deionized water to prepare a levulinic acid solution. Mix and grind zirconia, vermiculite, and ethyl cellulose, pass through a 150-mesh sieve, then add levulinic acid solution, heat up to 118°C, and seal and stir at this temperature for 2.2 hours at a stirring speed of 150r / min. Mixture A is obtained. Put simethicone and propylene carbonate into the mixture A, lower the temperature to 82°C, and seal and stir at this temperature for 1.5h, then raise the temperature to 140°C, and stir at this temperature for 1.1h, the stirring speed is 350r / min, then stop heating and ultrasonically treat for 30min, the ultrasonic power is 600W, centrifuge to get the precipitate...

Embodiment 2

[0025] In the embodiment of the present invention, a wear-resistant ceramic material includes the following raw materials: 19 kg of zirconia, 5 kg of simethicone, 25 kg of levulinic acid, 30 kg of vermiculite, 7 kg of propylene carbonate, and 7 kg of ethyl cellulose.

[0026] Mix levulinic acid with 8.5 times the mass of deionized water to prepare a levulinic acid solution. Mix and grind zirconia, vermiculite, and ethyl cellulose, pass through a 200-mesh sieve, then add levulinic acid solution, heat up to 120°C, and seal and stir at this temperature for 2.4 hours at a stirring speed of 150r / min. Mixture A is obtained. Put simethicone and propylene carbonate into the mixture A, lower the temperature to 85°C, and seal and stir at this temperature for 1.6h, then raise the temperature to 143°C, and stir at this temperature for 1.1h, the stirring speed is 350r / min, then stop heating and ultrasonically treat for 30min, the ultrasonic power is 600W, centrifuge to get the precipitat...

Embodiment 3

[0028] In an embodiment of the present invention, a wear-resistant ceramic material includes the following raw materials: 13 kg of zirconia, 2 kg of simethicone, 18 kg of levulinic acid, 24 kg of vermiculite, 4 kg of propylene carbonate, and 4 kg of ethyl cellulose.

[0029] Mix levulinic acid with 8.5 times the mass of deionized water to prepare a levulinic acid solution. Mix and grind zirconia, vermiculite, and ethyl cellulose, pass through a 200-mesh sieve, then add levulinic acid solution, heat up to 119°C, and seal and stir at this temperature for 2.3 hours at a stirring speed of 150r / min. Mixture A is obtained. Put simethicone and propylene carbonate into the mixture A, lower the temperature to 85°C, and seal and stir at this temperature for 1.6h, then raise the temperature to 143°C, and stir at this temperature for 1.1h, the stirring speed is 350r / min, then stop heating and ultrasonically treat for 30min, the ultrasonic power is 600W, centrifuge to get the precipitate...

technical field

[0001] The invention relates to the technical field of materials, in particular to a wear-resistant ceramic material and its preparation method and application. Background technique

[0002] At present, there are many kinds of dental ceramics used clinically, mainly including alumina-based ceramics, glass-based ceramics and zirconia-based ceramics. Because the main components of each ceramic are different, their physical and chemical properties are also different. Among them, zirconia stands out among many dental all-ceramic materials due to its excellent mechanical properties, which greatly broadens the indications of all-ceramic restorations. However, the amount of zirconia used is high and the cost is high. In order to reduce the amount used, other components are added. Among the added ingredients are vermiculite, etc., but due to the particularity of its structure, vermiculite expands after high temperature treatment and has good thermal insulation perfo...

Examples

Embodiment 1

[0022] In an embodiment of the present invention, a wear-resistant ceramic material includes the following raw materials: 11 kg of zirconia, 1 kg of simethicone, 15 kg of levulinic acid, 22 kg of vermiculite, 3 kg of propylene carbonate, and 3 kg of ethyl cellulose.

[0023] Mix levulinic acid with 8.5 times the mass of deionized water to prepare a levulinic acid solution. Mix and grind zirconia, vermiculite, and ethyl cellulose, pass through a 150-mesh sieve, then add levulinic acid solution, heat up to 118°C, and seal and stir at this temperature for 2.2 hours at a stirring speed of 150r / min. Mixture A is obtained. Put simethicone and propylene carbonate into the mixture A, lower the temperature to 82°C, and seal and stir at this temperature for 1.5h, then raise the temperature to 140°C, and stir at this temperature for 1.1h, the stirring speed is 350r / min, then stop heating and ultrasonically treat for 30min, the ultrasonic power is 600W, centrifuge to get the precipitate...

Embodiment 2

[0025] In the embodiment of the present invention, a wear-resistant ceramic material includes the following raw materials: 19 kg of zirconia, 5 kg of simethicone, 25 kg of levulinic acid, 30 kg of vermiculite, 7 kg of propylene carbonate, and 7 kg of ethyl cellulose.

[0026] Mix levulinic acid with 8.5 times the mass of deionized water to prepare a levulinic acid solution. Mix and grind zirconia, vermiculite, and ethyl cellulose, pass through a 200-mesh sieve, then add levulinic acid solution, heat up to 120°C, and seal and stir at this temperature for 2.4 hours at a stirring speed of 150r / min. Mixture A is obtained. Put simethicone and propylene carbonate into the mixture A, lower the temperature to 85°C, and seal and stir at this temperature for 1.6h, then raise the temperature to 143°C, and stir at this temperature for 1.1h, the stirring speed is 350r / min, then stop heating and ultrasonically treat for 30min, the ultrasonic power is 600W, centrifuge to get the precipitat...

Embodiment 3

[0028] In an embodiment of the present invention, a wear-resistant ceramic material includes the following raw materials: 13 kg of zirconia, 2 kg of simethicone, 18 kg of levulinic acid, 24 kg of vermiculite, 4 kg of propylene carbonate, and 4 kg of ethyl cellulose.

[0029] Mix levulinic acid with 8.5 times the mass of deionized water to prepare a levulinic acid solution. Mix and grind zirconia, vermiculite, and ethyl cellulose, pass through a 200-mesh sieve, then add levulinic acid solution, heat up to 119°C, and seal and stir at this temperature for 2.3 hours at a stirring speed of 150r / min. Mixture A is obtained. Put simethicone and propylene carbonate into the mixture A, lower the temperature to 85°C, and seal and stir at this temperature for 1.6h, then raise the temperature to 143°C, and stir at this temperature for 1.1h, the stirring speed is 350r / min, then stop heating and ultrasonically treat for 30min, the ultrasonic power is 600W, centrifuge to get the precipitate...

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