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Magnesium oxide whisker/montmorillonite modified denture resin base material and preparation method thereof

A technology of magnesium oxide whiskers and montmorillonite, which is used in dental prosthesis, medical science, dentistry, etc., can solve the problem that the mechanical properties and light transmittance of the base material cannot be balanced, avoid fly ash, and expand the interlayer spacing. , the effect of promoting peeling

Inactive Publication Date: 2018-11-13
蚌埠佳美仕义齿有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, polymethyl methacrylate has good light transmission and can be dyed according to needs to achieve the purpose of aesthetics and simulation. However, when it is used as a denture base, there are often mechanical properties and light transmission of the base material. sexual incompatibility

Method used

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  • Magnesium oxide whisker/montmorillonite modified denture resin base material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A denture resin base material modified by magnesium oxide whiskers / montmorillonite is made from the following raw materials in parts by weight:

[0018] Montmorillonite 10, sodium lauryl sulfate 2, modified magnesium oxide whiskers 5, methyl methacrylate 40, ammonium persulfate solution 5, tray powder 100, tray water 40;

[0019] The concentration of the ammonium persulfate solution is 20%, and both the tray powder and the tray water are thermosetting type.

[0020] Further, its preparation method comprises the following steps:

[0021] (1) Place the montmorillonite at -25°C to freeze-dry for 1 hour, take it out, and ball mill it for 10 minutes to peel off the montmorillonite initially, then add the montmorillonite to distilled water 10 times its volume, raise the temperature to 50°C, and rotate at 800rpm After stirring for 20 minutes under the same conditions, raise the temperature until the solution boils, reduce the speed to 500rpm, continue to stir for 10 minutes, ...

Embodiment 2

[0027] A denture resin base material modified by magnesium oxide whiskers / montmorillonite is made from the following raw materials in parts by weight:

[0028] Montmorillonite 15, sodium lauryl sulfate 3, modified magnesium oxide whiskers 10, methyl methacrylate 45, ammonium persulfate solution 8, tray powder 110, tray water 50;

[0029] The concentration of the ammonium persulfate solution is 30%, and both the tray powder and the tray water are thermosetting type.

[0030] Further, its preparation method comprises the following steps:

[0031] (1) Place the montmorillonite at -28°C to freeze-dry for 2 hours, take it out, and ball mill it for 20 minutes to peel off the montmorillonite initially, then add the montmorillonite to distilled water 15 times its volume, raise the temperature to 55°C, and rotate at 900rpm After stirring for 25 minutes under the same conditions, raise the temperature until the solution boils, reduce the rotation speed to 600rpm, continue to stir for 1...

Embodiment 3

[0037] A denture resin base material modified by magnesium oxide whiskers / montmorillonite is made from the following raw materials in parts by weight:

[0038] Montmorillonite 20, sodium lauryl sulfate 5, modified magnesium oxide whiskers 15, methyl methacrylate 0, ammonium persulfate solution 12, tray powder 120, tray water 60;

[0039] The concentration of the ammonium persulfate solution is 50%, and both the tray powder and the tray water are thermosetting type.

[0040] Further, its preparation method comprises the following steps:

[0041] (1) Place the montmorillonite at -30°C for 3 hours, take it out and ball mill it for 30 minutes to peel off the montmorillonite initially, then add the montmorillonite to distilled water 20 times its volume, raise the temperature to 60°C, and rotate at 1000rpm After stirring for 30 minutes under the same conditions, raise the temperature until the solution boils, reduce the rotation speed to 700rpm, continue to stir for 20 minutes, add...

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Abstract

The invention discloses a magnesium oxide whisker / montmorillonite modified denture resin base material and a preparation method thereof. After montmorillonite is pretreated, the crystal layer spacingis increased; then the montmorillonite is further modified by using modified magnesium oxide whisker; the modified magnesium oxide whisker and organic molecules enter a part between montmorillonite layers by using the ion exchange action, so that the interlamellar spacing of the montmorillonite is enlarged. The montmorillonite is enabled to be fully and uniformly dispersed in a resin matrix; the physical property of a composite material is enhanced and the condition of local stress imbalance is avoided; meanwhile, the phenomena of denture matrix cracking and the like due to stress imbalance are avoided, so that the service life of a denture matrix is prolonged.

Description

technical field [0001] The invention belongs to the technical field of denture base materials, and in particular relates to a denture resin base material modified by magnesium oxide whiskers / montmorillonite and a preparation method thereof. Background technique [0002] As one of the commonly used oral restoration materials for patients with missing dentition, polymethylmethacrylate-based denture base products can well meet the aesthetic requirements of dentures, and are easy to operate, easy to polish and repair, and can be used in oral environments. With the advantages of stable performance, it is the most widely used polymer base material in clinical practice. At the same time, polymethyl methacrylate has good light transmission and can be dyed according to needs to achieve the purpose of aesthetics and simulation. However, when it is used as a denture base, there are often mechanical properties and light transmission of the base material. Sexual incompatibility. Conte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/12C08K13/06C08K9/06C08K7/08C08K5/41C08K3/34A61C13/01
CPCA61C13/01C08L33/12C08L2203/02C08L2205/025C08K13/06C08K9/06C08K7/08C08K5/41C08K3/346
Inventor 冷朋
Owner 蚌埠佳美仕义齿有限公司
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