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Machineable ceramic material and preparation method thereof

A technology of ceramic materials and mass percentage, which is applied in the field of medical materials, can solve the problems of high sintering temperature, low strength and toughness, and achieve the effects of low energy consumption, short production cycle, performance enhancement and toughening

Inactive Publication Date: 2019-07-23
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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  • Machineable ceramic material and preparation method thereof
  • Machineable ceramic material and preparation method thereof
  • Machineable 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 green body, first heating to 450°C at a heating rate of 2°C / min, and then heating to 1000°C at a heating rate of 10°C / min for firing, 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 below....

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 to granulate, press into a green body, first heat to 450°C at a heating rate of 2°C / min, and then heat to 1010°C at a heating rate of 10°C / min for firing, and hold 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 Table 4 belo...

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 hold 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] Table...

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Abstract

The invention provides a machineable ceramic material and a preparation method thereof. The material is prepared from 70%-90% by mass of glass powder, 5%-20% by mass of nano-diatomite and 1%-10% by mass of ZrO2; the glass powder is prepared from components in percentage by mass as follows: 15%-30% of MgF2, 5%-20% of P2O5, 5%-15% of K2O, 5%-10% of Al2O3 (hollow microspheres) and 25%-40% of SiO2. According to the material, the nano-diatomite is added as a modifier and is uniformly dispersed in a glass phase, and self-toughening and strengthening functions of fiber are realized. The machineable ceramic material has low sintering temperature, and the bending strength and breaking tenacity 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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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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