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Special investment for oral cast titanium and its shaping preparation method

A special package and oral cavity technology, which is applied in the field of oral cavity materials and its molding process, can solve the problems of molten titanium reaction, difficulty in popularization and application, and expensive embedding materials, etc.

Inactive Publication Date: 2006-10-11
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, domestic commodity embedding materials are expensive and react severely with molten titanium, making it difficult to popularize and apply

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0004] Specific embodiment 1: The special investment material for oral cast titanium in this embodiment is composed of the following components according to the weight ratio: ZrSiO 4 : Al(H 2 PO 4 ) 3 :MgO:expansion agent=1:(0.15~3):(0.12~0.16):(0.3~0.7). The expansion agent is made of SiO 2 and Al 2 o 3 Composition, SiO 2 and Al 2 o 3 The weight ratio of SiO is (2~4):1, SiO 2 and Al 2 o 3 The weight ratio of is preferably 2.55:1.

specific Embodiment approach 2

[0005] Specific embodiment two: the weight ratio of various components in this embodiment is: ZrSiO 4 : Al(H 2 PO 4 ) 3 :MgO:expansion agent=1:(0.15~1):(0.12~0.14):(0.3~0.5).

specific Embodiment approach 3

[0006] Specific embodiment three: the weight ratio of various components in this embodiment is: ZrSiO 4 : Al(H 2 PO 4 ) 3 :MgO:expansion agent=1:(1~3):(0.14~0.16):(0.5~0.7).

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PUM

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Abstract

The invention relates to a special investment material for casting titanium in the oral cavity and a preparation method thereof, which relates to an oral cavity material and a forming process thereof. The present invention is made up of following components according to the proportioning of weight ratio: ZrSiO 4 : Al(H 2 PO 4 ) 3 :MgO:expansion agent=1:(0.15~3):(0.12~0.16):(0.3~0.7). Its preparation method is: a. Al(H 2 PO 4 ) 3 Dissolved in water for hydrolysis reaction; b. ZrSiO 4 , MgO and expansion agent aggregates are dry-mixed; c. mix the aggregates with Al(H 2 PO 4 ) 3 The hydrolyzate is mixed and stirred in vacuum; d. pour the above mixture into a vibrating machine for demoulding; e. air-dry the molded product; f. dry at low temperature; g. roast at high temperature; The invention adopts an orthogonal experiment method to determine the optimal composition ratio of the embedding material with excellent performance, and has the advantages of simple process, low cost and small thickness of the hardened layer.

Description

Technical field: [0001] The invention relates to an oral cavity material and a molding process thereof. Background technique: [0002] The Japanese stomatology community believes that titanium is an oral material in the space age, and in the 21st century it will replace the current dental alloy and become the main dental metal material. However, the application of titanium in oral restoration is not long, and some problems still need to be solved urgently, especially the quality, precision and surface pollution of titanium castings all play a limiting role in its promotion. To solve these problems, we first need to start with the research of investment materials. Therefore, investment materials, as modeling materials for dental titanium casting, have always been an important topic in the research of titanium casting technology. At present, the investment materials are mainly divided into four categories: silicon-based, magnesium-based, zirconium-based, and aluminum-based. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C1/00B22C1/02A61C13/20A61K6/04
Inventor 陈子勇陈玉勇舒群
Owner HARBIN INST OF TECH
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