CN107115203A - A kind of dentistry investment additive and preparation method - Google Patents
A kind of dentistry investment additive and preparation method Download PDFInfo
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- CN107115203A CN107115203A CN201710294256.1A CN201710294256A CN107115203A CN 107115203 A CN107115203 A CN 107115203A CN 201710294256 A CN201710294256 A CN 201710294256A CN 107115203 A CN107115203 A CN 107115203A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
- A61K6/831—Preparations for artificial teeth, for filling teeth or for capping teeth comprising non-metallic elements or compounds thereof, e.g. carbon
- A61K6/836—Glass
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/60—Preparations for dentistry comprising organic or organo-metallic additives
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/70—Preparations for dentistry comprising inorganic additives
- A61K6/71—Fillers
- A61K6/76—Fillers comprising silicon-containing compounds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/70—Preparations for dentistry comprising inorganic additives
- A61K6/71—Fillers
- A61K6/77—Glass
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
- A61K6/831—Preparations for artificial teeth, for filling teeth or for capping teeth comprising non-metallic elements or compounds thereof, e.g. carbon
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
- A61K6/884—Preparations for artificial teeth, for filling teeth or for capping teeth comprising natural or synthetic resins
- A61K6/887—Compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Plastic & Reconstructive Surgery (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Dental Preparations (AREA)
Abstract
Hot investment casting embedded material field is repaired the invention belongs to clinical oral, and in particular to a kind of dentistry investment additive and preparation method；The investment with additive is prepared from by the raw material of following parts by weight：0.1~10 part of 10~50 parts of magnesium aluminate spinel, 5~20 parts of glass dust, 1~20 part of silicon carbide whisker, 2~10 parts of tricalcium silicate and explosion-proof fiber；The additive can make the additive that investment is immediately placed into 800~900 DEG C of Muffle furnaces after demolding, can so greatly shorten the operating time, and the other performance of investment is not influenceed while operating efficiency is improved.
Description
Technical field
Hot investment casting embedded material field is repaired the invention belongs to clinical oral, and in particular to a kind of dentistry investment is with adding
Plus agent and preparation method.
Background technology
Dentistry investment includes the species such as support, porcelain, casting titanium, and the preparation method of current investment has many, and someone will
The mold of investment is continuously heating to 1100~1250 DEG C and keeps 1 from room temperature to 120~160 DEG C of 60~100min of holding
~3h, then slow cooling is to 600~800 DEG C again, and heating and cooling rate are 5 DEG C/min or so, and 10~12 hours laggard
Row casting；Also natural air drying after investment is molded according to formula preparation dries 2~3 at 120 ± 5 DEG C after 10~15 hours
Hour, 2~5 hours then are incubated at a temperature of 450 ± 10 DEG C, then 950 ± 10 DEG C of insulations 2~4 are warming up to 5 DEG C/sec of speed
Hour, finally cool 300 DEG C and come out of the stove；The demoulding is stirred after also prepared by investment, is air-dried 0.5~2 hour in atmosphere
It is put into afterwards in stove with 5 DEG C/min programming rate to 270 DEG C and is incubated 20~60 minutes, then be warming up to 590 DEG C and is incubated 20~60 points
Clock, is continuously heating to 960 DEG C and is incubated 40~50 minutes, be finally down to 200 DEG C of castings.The whole operation process consumption of these investments
Shi Jiu, largely effects on production efficiency.
The content of the invention
It is an object of the invention to provide a kind of dentistry investment additive and preparation method, the additive can make embedding
The additive in 800~900 DEG C of Muffle furnaces is immediately placed into after the material demoulding, investment is not influenceed while operating efficiency is improved
Other performance.
The present invention is that the technical scheme for solving above-mentioned technical problem use is：A kind of dentistry investment additive, it is
It is prepared from by the raw material of following parts by weight：10~50 parts of magnesium aluminate spinel, 5~20 parts of glass dust, silicon carbide whisker 1~20
0.1~10 part of part, 2~10 parts of tricalcium silicate and explosion-proof fiber.
Further, the magnesium aluminate spinel includes coarse powder and fine powder, and coarse granularity is 100~350 μm, and powder particle size is
10~60 μm, and coarse powder and fine powder ratio are 0.1~2：1.
Further, the glass dust is that simple glass is levigate, and granularity is 20~50 μm.
Further, the silicon carbide whisker granularity is 50~250 μm.
Further, the tricalcium silicate particle diameter is 2~50 μm.
Further, the explosion-proof fiber is using polypropylene as raw material, and length is 1~3mm, a diameter of 10~20 μm, softening
Point is 55~65 DEG C, and fusing point is 75~85 DEG C.
A kind of preparation method of dentistry investment additive, described its is comprised the following steps that：
（1）10~50 parts of magnesium aluminate spinel is taken, is ground, two kinds of powder of different thicknesses, coarse powder are obtained after grinding screening respectively
Granularity is 100~350 μm, and powder particle size is 10~60 μm, and coarse powder and fine powder ratio are 0.1~2：1, it is stand-by；
（2）5~20 parts of progress ball millings of simple glass are taken, the granularity that screening obtains glass dust is 20~50 μm, stand-by；
（3）1~20 part of silicon carbide whisker is taken, the granularity after grinding screening is 50~250 μm, stand-by；
（4）2~10 parts of tricalcium silicate is taken, the granularity after grinding screening is 2~50 μm, stand-by；
（5）0.1~10 part of explosion-proof fiber is taken, after anticipating, the length of explosion-proof fiber is obtained for 1~3mm, a diameter of 10~
20 μm, softening point is 55~65 DEG C, and fusing point is 75~85 DEG C, stand-by；
（6）Respectively by above-mentioned steps（1）、（2）、（3）、（4）、（5）The stand-by raw material of screening：It is 10~50 parts of magnesium aluminate spinel, general
Logical 0.1~10 part of 5~20 parts of glass, 1~20 part of silicon carbide whisker, 2~10 parts of tricalcium silicate and explosion-proof fiber, add batch mixing
In machine, 1h is uniformly mixed, additive is obtained.
Further, a kind of application method of dentistry investment additive, when using according to additive and investment with
0.1~5% proportioning, additive is added in investment, and embedding treatment is carried out according to normal embedding operating process.
Beneficial effects of the present invention are mainly manifested in the following aspects：
（1）Aggregate is magnesium aluminate spinel in additive, and magnesium aluminate spinel high temperature resistant, thermal coefficient of expansion is small, and heat endurance is good, anti-slag
Property it is strong, be a kind of quality refractory raw material, skeleton function played in unshape refractory, added in investment in the invention
Additive, improves the physical mechanics and resistance to elevated temperatures of investment；
（2）Glass dust is that simple glass is levigate, and granularity is 20~50 μm.Glass dust can play adhesive effect at high temperature；
（3）Silicon carbide whisker granularity is 50~250 μm.Silicon carbide whisker is a kind of few defects, the list for having certain draw ratio
Crystal fiber, it has fairly good high temperature resistant property and very high intensity.It is mainly used in needing the toughness reinforcing of high strength at high temperature application material
Occasion.Silicon carbide whisker belongs to a kind of crystal formation for cubic crystal palpus, and diamond, is hardness in the whisker synthesized at present
Highest, modulus is maximum, and tensile strength is maximum, heat resisting temperature highest crystal whisker products, with higher toughness and electric conductivity,
Wear-resistant, high temperature resistant, special aseismatic, corrosion-resistant, radiation hardness；
（4）Tricalcium silicate particle diameter is 2~50 μm.Tricalcium silicate hydration reaction is fast, and hydration heat amount is big, and tricalcium silicate is stood after adding water
Occur drastically to chemically react, but the duration is shorter, terminates in 15min.Aquation releases heat and is conducive to investment heat swollen
It is swollen；
（5）Explosion-proof fiber is using polypropylene as raw material, and length is 1~3mm, and a diameter of 10~20 μm, softening point is 55 DEG C~65 DEG C,
Fusing point is 75 DEG C~85 DEG C.The explosion-proof fiber have be uniformly dispersed, not conglomeration, not simultaneously silk the features such as, explosion-proof fiber can be effective
Shorten drying time, improve material integrally anti-folding and compressive resistance, rapid discharge vapor reduces internal stress, prevents explosion, tortoise
Split phenomenon；Explosion-proof mechanism：Because investment reacts, release substantial amounts of heat so that investment internal temperature drastically on
Rise, 100 DEG C or so can be reached.When reaching certain temperature, fiber starts：Softening, contraction, thawing.Eventually form stomata and carbon
Change, small network stomata is scattered in investment, vapor channel can be opened, mitigate internal pressure, explosion is finally prevented；
Explosion-proof fiber is smaller, addition is big, is favorably improved refractory temperature, but addition too big or stomata is too big to influence production again
The use of product.Therefore an appropriate value is needed so that on the premise of embedding quality is not influenceed, can not opened into hot environment
Split.
Embodiment
Present invention is described in detail in conjunction with the embodiments, the present embodiment is given premised on technical solution of the present invention
Go out detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following embodiments.
A kind of dentistry investment additive, it is prepared from by the raw material of following parts by weight：Magnesium aluminate spinel 10~
0.1~10 part of 50 parts, 5~20 parts of glass dust, 1~20 part of silicon carbide whisker, 2~10 parts of tricalcium silicate and explosion-proof fiber.
Further, the magnesium aluminate spinel includes coarse powder and fine powder, and coarse granularity is 100~350 μm, and powder particle size is
10~60 μm, and coarse powder and fine powder ratio are 0.1~2：1.
Further, the glass dust is that simple glass is levigate, and its granularity is 20~50 μm.
Further, the silicon carbide whisker granularity is 50~250 μm.
Further, the tricalcium silicate particle diameter is 2~50 μm.
Further, the explosion-proof fiber is using polypropylene as raw material, and length is 1~3mm, a diameter of 10~20 μm, softening
Point is 55~65 DEG C, and fusing point is 75~85 DEG C.
Further, a kind of preparation method of dentistry investment additive, described its is comprised the following steps that：
（1）10~50 parts of magnesium aluminate spinel is taken, is ground, two kinds of powder of different thicknesses, coarse powder are obtained after grinding screening respectively
Granularity is 100~350 μm, and powder particle size is 10~60 μm, and coarse powder and fine powder ratio are 0.1~2：1, it is stand-by；
（2）5~20 parts of progress ball millings of simple glass are taken, the granularity that screening obtains glass dust is 20~50 μm, stand-by；
（3）1~20 part of silicon carbide whisker is taken, the granularity after grinding screening is 50~250 μm, stand-by；
（4）2~10 parts of tricalcium silicate is taken, the granularity after grinding screening is 2~50 μm, stand-by；
（5）0.1~10 part of explosion-proof fiber is taken, after anticipating, the length of explosion-proof fiber is obtained for 1~3mm, a diameter of 10~
20 μm, softening point is 55~65 DEG C, and fusing point is 75~85 DEG C, stand-by；
（6）Respectively by above-mentioned steps（1）、（2）、（3）、（4）、（5）The stand-by raw material of screening：It is 10~50 parts of magnesium aluminate spinel, general
Logical 0.1~10 part of 5~20 parts of glass, 1~20 part of silicon carbide whisker, 2~10 parts of tricalcium silicate and explosion-proof fiber, add batch mixing
In machine, 1h is uniformly mixed, additive is obtained.
Further, a kind of application method of dentistry investment additive, when using according to additive and investment with
0.1~5% proportioning, additive is added in investment, and embedding treatment is carried out according to normal embedding operating process.
It is described further with reference to embodiment.
Embodiment 1：
First, a kind of preparation of dentistry investment additive
A kind of dentistry investment additive, is prepared from according to the raw material of following parts by weight：50 parts of magnesium aluminate spinel, glass dust
20 parts, 15 parts of silicon carbide whisker, 5 parts of 10 parts of tricalcium silicate and explosion-proof fiber, wherein：Magnesium aluminate spinel is after grinding screening
Two kinds of powder of different thicknesses are obtained, coarse granularity is 100~350 μm, and powder particle size is 10~60 μm, and coarse powder and fine powder ratio
For 1；The granularity that simple glass obtains glass dust after grinding screening is 20~50 μm；After the ground screening of silicon carbide whisker
Granularity is 50~250 μm；Granularity after the ground screening of tricalcium silicate is 2~50 μm；The pretreating process of explosion-proof fiber is：Will
Particle diameter is 50~200 μm of Al2O3Particle uniformly plates one layer of aluminium by the method for chemical plating in particle surface, then by weight
Number takes the Al of one layer of aluminium of plating2O320~30 parts of particle, 70~80 parts of polypropylene, add twin-screw and squeeze after said components are weighed
Go out in machine the blending extrusion under 160~200 DEG C of processing temperature, then crushed through Highefficientpulverizer, obtain explosion-proof by screening
Fiber, its length is 1mm~3mm, and a diameter of 10~20 μm, softening point is 55~65 DEG C, and fusing point is 75~85 DEG C, standby；
Al2O3The aluminium of particle surface can produce H with water reaction2, the H before investment ot-yet-hardened2Gas escapes inside phosphate investment
Capillary steam vent can be formed when going out, so as to improve its gas permeability, while being favorably improved the temperature tolerance of phosphate investment, makes it
Do not ftracture in high temperature environments；
The raw material of said ratio is added in batch mixer, 1h is uniformly mixed, obtains additive；
2nd, a kind of use of dentistry investment additive
According to additive and investment with 2% proportioning, additive is added in phosphate investment, grasped according to normal embedding
Make to be stripped after process carries out embedding treatment, 20~40min, be then placed in 800 DEG C of Muffle furnaces, heated up after insulation 20min
To required time, mold is carried out.
Embodiment 2：
First, a kind of preparation of dentistry investment additive
A kind of dentistry investment additive, is prepared from according to the raw material of following parts by weight：45 parts of magnesium aluminate spinel, glass dust
20 parts, 20 parts of silicon carbide whisker, 10 parts of 5 parts of tricalcium silicate and explosion-proof fiber, wherein：Magnesium aluminate spinel is after grinding screening
Two kinds of powder of different thicknesses are obtained, coarse granularity is 100~350 μm, and powder particle size is 10~60 μm, and coarse powder and fine powder ratio
For 1；The granularity that simple glass obtains glass dust after grinding screening is 20~50 μm；After the ground screening of silicon carbide whisker
Granularity is 50~250 μm；Granularity after the ground screening of tricalcium silicate is 2~50 μm；0.1~10 part of explosion-proof fiber, through advance
After processing, obtain explosion-proof fiber length be 1~3mm, a diameter of 10~20 μm, softening point be 55~65 DEG C, fusing point be 75~
85℃；
The raw material of said ratio is added in batch mixer, 1h is uniformly mixed, obtains additive；
2nd, a kind of use of dentistry investment additive
According to additive and investment with 5% proportioning, additive is added in casting titanium investment, operated according to normal embedding
Process is stripped after carrying out embedding treatment, 20~40min, is then placed in 900 DEG C of Muffle furnaces, is warming up to after insulation 20min
Required time, carries out mold.
Presently preferred embodiments of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, wherein the Material handling processes not being described in detail to the greatest extent are construed as being given with the common mode in this area
Implement；Any those skilled in the art, without departing from the scope of the technical proposal of the invention, take off using above-mentioned
The methods and techniques content shown makes many possible variations and modification to technical solution of the present invention, or is revised as equivalent variations
Equivalent embodiment, this has no effect on the substantive content of the present invention.Therefore, every content without departing from technical solution of the present invention, according to
Any simple modifications, equivalents, and modifications are done to above example according to the technical spirit of the present invention, still belong to skill of the present invention
In the range of the protection of art scheme.
Claims (8)
1. a kind of dentistry investment additive, it is characterised in that：It is prepared from by the raw material of following parts by weight：Magnalium point
10~50 parts of spar, 5~20 parts of glass dust, 1~20 part of silicon carbide whisker, 2~10 parts of tricalcium silicate and explosion-proof fiber 0.1~
10 parts.
2. a kind of dentistry investment additive according to claim 1, it is characterised in that：The magnesium aluminate spinel includes
Coarse powder and fine powder, coarse granularity are 100~350 μm, and powder particle size is 10~60 μm, and coarse powder and fine powder ratio are 0.1~2：
1。
3. a kind of dentistry investment additive according to claim 1, it is characterised in that：The glass dust is common glass
Glass is levigate, and its granularity is 20~50 μm.
4. a kind of dentistry investment additive according to claim 1, it is characterised in that：The silicon carbide whisker granularity
For 50~250 μm.
5. a kind of dentistry investment additive according to claim 1, it is characterised in that：The tricalcium silicate particle diameter is
2~50 μm.
6. a kind of dentistry investment additive according to claim 1, it is characterised in that：The explosion-proof fiber is with poly- third
Alkene is raw material, and length is 1~3mm, and a diameter of 10~20 μm, softening point is 55~65 DEG C, and fusing point is 75~85 DEG C.
7. a kind of preparation method of dentistry investment additive according to claim 1, it is characterised in that：Its described tool
Body step is as follows：
（1）10~50 parts of magnesium aluminate spinel is taken, is ground, two kinds of powder of different thicknesses, coarse powder are obtained after grinding screening respectively
Granularity is 100~350 μm, and powder particle size is 10~60 μm, and coarse powder and fine powder ratio are 0.1~2：1, it is stand-by；
（2）5~20 parts of progress ball millings of simple glass are taken, the granularity that screening obtains glass dust is 20~50 μm, stand-by；
（3）1~20 part of silicon carbide whisker is taken, the granularity after grinding screening is 50~250 μm, stand-by；
（4）2~10 parts of tricalcium silicate is taken, the granularity after grinding screening is 2~50 μm, stand-by；
（5）0.1~10 part of explosion-proof fiber is taken, after anticipating, the length of explosion-proof fiber is obtained for 1~3mm, a diameter of 10~
20 μm, softening point is 55~65 DEG C, and fusing point is 75~85 DEG C, stand-by；
（6）Respectively by above-mentioned steps（1）、（2）、（3）、（4）、（5）The stand-by raw material of screening：It is 10~50 parts of magnesium aluminate spinel, general
Logical 0.1~10 part of 5~20 parts of glass, 1~20 part of silicon carbide whisker, 2~10 parts of tricalcium silicate and explosion-proof fiber, add batch mixing
In machine, 1h is uniformly mixed, additive is obtained.
8. a kind of application method of dentistry investment additive according to claim 1, it is characterised in that：When using by
According to additive and investment with 0.1~5% proportioning, additive is added in investment, entered according to normal embedding operating process
Row embedding treatment.
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| CN201710294256.1A CN107115203A (en) | 2017-04-28 | 2017-04-28 | A kind of dentistry investment additive and preparation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710294256.1A CN107115203A (en) | 2017-04-28 | 2017-04-28 | A kind of dentistry investment additive and preparation method |
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| CN107115203A true CN107115203A (en) | 2017-09-01 |
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ID=59725107
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115624494A (en) * | 2022-03-31 | 2023-01-20 | 沈阳建筑大学 | Preparation method of dental phosphate embedding material, embedding material and application |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1103283A (en) * | 1993-06-24 | 1995-06-07 | 丹茨普利股份有限公司 | Dental prosthesis |
| CN1475317A (en) * | 2003-07-03 | 2004-02-18 | 四川大学 | Oral carity cast titanium special embedded material and its preparation method and use |
-
2017
- 2017-04-28 CN CN201710294256.1A patent/CN107115203A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1103283A (en) * | 1993-06-24 | 1995-06-07 | 丹茨普利股份有限公司 | Dental prosthesis |
| CN1475317A (en) * | 2003-07-03 | 2004-02-18 | 四川大学 | Oral carity cast titanium special embedded material and its preparation method and use |
Non-Patent Citations (1)
| Title |
|---|
| 宋利明: "晶须材料在口腔医学中的应用研究及展望", 《特别健康》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115624494A (en) * | 2022-03-31 | 2023-01-20 | 沈阳建筑大学 | Preparation method of dental phosphate embedding material, embedding material and application |
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