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A kind of machinable ceramic material and preparation method thereof

A technology of ceramic materials and secondary ingredients, applied in the field of medical materials, can solve the problems of high sintering temperature, low strength and toughness, etc., and achieve the effect of excellent cutting performance and good biocompatibility

Inactive Publication Date: 2021-07-30
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these ceramic materials have problems such as high sintering temperature, low strength and toughness.

Method used

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  • A kind of machinable ceramic material and preparation method thereof
  • A kind of machinable ceramic material and preparation method thereof
  • A kind of machinable ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] According to the proportions in Table 1 below, ball mill on a ball mill with a rotation speed of 400r / min for 6 hours, dry at 100°C in a 3.3kw ordinary oven, and pass through 250 holes / cm 2 Sieve the sample, raise the temperature to 1100°C at 5°C / min, and keep it at 1100°C for 2 hours, cool it with molten water, grind, and sieve to obtain glass powder.

[0032] Table 1

[0033]

[0034] For secondary batching, according to 90% glass powder, 5% nano diatomite and 5% ZrO 2 Mix evenly, add deionized water, mill on a ball mill at a speed of 400r / min for 8 hours, dry at 120°C, pass through 250 holes / cm 2 Separating sieve, adding 8wt% paraffin wax to granulate, pressing into a green body, first heating to 450°C at a heating rate of 2°C / min, then heating to 1000°C at a heating rate of 10°C / min for firing, and holding for 1 hour. After cooling a ceramic medium is produced.

[0035] The test results of the mechanical properties of the above examples are shown in Table 2 belo...

Embodiment 2

[0039] According to the ratio of ingredients in Table 3 below, ball mill on a ball mill with a rotation speed of 400r / min for 4 hours, dry at 100°C in a 3.3kw ordinary oven, and pass through 250 holes / cm 2 Sieve the sample, raise the temperature to 1100°C at 7°C / min, and keep it at 1100°C for 2 hours, cool it with molten water, grind, and sieve to obtain glass powder.

[0040] table 3

[0041]

[0042] For secondary batching, according to 85% glass powder, 10% nano diatomite and 5% ZrO 2 Mix evenly, add deionized water, mill on a ball mill at a speed of 400r / min for 8 hours, dry at 120°C, pass through 250 holes / cm 2 Sieve the sample, add 8wt% paraffin wax to granulate, press into a green body, first heat up to 450°C at a heating rate of 2°C / min, then heat to 1010°C at a heating rate of 10°C / min for firing, and keep warm for 1 hour. After cooling a ceramic medium is produced.

[0043] The test results of the mechanical properties of the above examples are detailed in Tabl...

Embodiment 3

[0047] According to the proportions in Table 5 below, mill on a ball mill with a rotation speed of 400r / min for 4 hours, dry at 100°C in a 3.3kw ordinary oven, and pass through 250 holes / cm 2 Sieve the sample, raise the temperature to 1100°C at 7°C / min, and keep it at 1100°C for 3 hours, cool with molten water, grind, and sieve to obtain glass powder.

[0048] table 5

[0049]

[0050] For secondary batching, according to 80% glass powder, 15% nano diatomite and 5% ZrO 2 Mix evenly, add deionized water, mill on a ball mill at a speed of 400r / min for 8 hours, dry at 120°C, pass through 250 holes / cm 2 Sieve the sample, add 8wt% paraffin to granulate, press into a green body, first heat up to 450°C at a heating rate of 2°C / min, then heat to 1020°C at a heating rate of 10°C / min for firing, and keep warm for 1 hour. After cooling a ceramic medium is produced.

[0051] The test results of the mechanical properties of the above examples are detailed in Table 6 below.

[0052] ...

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Abstract

The present invention is a machinable ceramic material and a preparation method thereof, wherein the material comprises glass powder with a mass percentage of 70-90%, nano diatomite with a mass percentage of 5-20% and ZrO with a mass percentage of 1-10% 2 ; Described glass powder comprises the component of following mass percent: the MgF of 15-30% 2 , 5‑20% of P 2 o 5 , 5‑15% of K 2 O, 5‑10% Al 2 o 3 (hollow microspheres) and 25‑40% SiO 2 Composition of glass powder. The material adopts the method of adding nano-diatomite as a modifier, and the nano-diatomite is evenly dispersed in the glass phase to play the role of fiber self-toughening and strengthening. The sintering temperature of the machinable ceramic material of the invention is low, and the bending strength and fracture toughness are improved.

Description

technical field [0001] The invention relates to a machinable ceramic material and a preparation method thereof, belonging to the technical field of medical materials. Background technique [0002] The development of dental materials and their processing technology has promoted the rapid improvement of oral treatment level. In the past two decades, new post-core materials, adhesive materials, and all-ceramic restoration materials have been gradually promoted in clinical applications. With the advancement of these technologies, it has also provided greater opportunities for the development of CAD / CAM. The promotion in the clinic puts forward more urgent requirements. The research on machinable materials has achieved many important developments under the strong influence of this demand. [0003] CAD / CAM systems not only require the machinability and certain mechanical strength of ceramic materials, but also require materials that can imitate the translucency of natural teeth....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/02
CPCC03C10/00
Inventor 张永刚张永强王玥
Owner TAIYUAN UNIV OF TECH
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