CN101617993B - Plasticizer and preparation method thereof - Google Patents
Plasticizer and preparation method thereof Download PDFInfo
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- CN101617993B CN101617993B CN2009101629382A CN200910162938A CN101617993B CN 101617993 B CN101617993 B CN 101617993B CN 2009101629382 A CN2009101629382 A CN 2009101629382A CN 200910162938 A CN200910162938 A CN 200910162938A CN 101617993 B CN101617993 B CN 101617993B
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- resorcinol
- glutaraldehyde
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Abstract
The invention provides a plasticizer, comprising the reaction output of the following substances by weight percent: 25 percent of glutaraldehyde water solution, 45 percent of resorcinol water solution, 50 percent of sodium hydroxide water solution, sodium monoflurophosphate and silicon dioxide, wherein the mole ratio of glutaraldehyde, resorcinol, sodium hydroxide, sodium monoflurophosphate and silicon dioxide is 5:5:0.1:3:1. The invention also provides a preparation method of the plasticizer. The plasticizer has good flexural strength and simple preparation method, and is particularly suitable for large-scale promotion for clinical use.
Description
Technical field
The present invention relates to the field, oral cavity, particularly, the present invention relates to a kind of plasticiser and preparation method thereof.
Background technology
Advantage is widely adopted pulp resinifying therapy so that its clinical efficacy height, short treating period, indication be extensive, easy and simple to handle etc.Used plasticiser is the phenolic resins that contains formaldehyde, and through the clinical practice in 40 years, not finding had serious adverse reaction to human body.Yet, contain the carcinogenic risk that the formaldehydes medicine is used for toxic and side effects, particularly formaldehyde that endodontic treatment produces in recent years and begun to cause the attention on circle, oral cavity, and can PARA FORMALDEHYDE PRILLS(91,95) continue on for endodontic treatment and proposed query.For this reason, the domestic scholar of having begins to replace formaldehyde to prepare novel plasticiser with glutaraldehyde.Document 1 (" Chinese stomatology magazine " 1993 for example, 28, the 269-271 page or leaf) a kind of novel plasticiser glutaraldehyde phenolic resins is disclosed, and by the basic research of tooth experiment and biological applications of exsomatizing, and think behind the preliminary observation by clinical efficacy: glutaraldehyde phenolic resins can replace formaldehyde phenolic resin to carry out pulp resinifying therapy.Document 2 (" Ningbo medical science " 1996 the 8th the 5th phases of volume, the 255-257 page or leaf) discloses for the plasticiser that uses glutaraldehyde, resorcinol and sodium hydroxide to make, and the fundamental characteristics of this plasticiser investigated, but the inventor finds that after deliberation its mechanical characteristic (for example flexural strength) still remains further to be improved.
When pulp resinifying therapy, owing to inevitably chew in the oral cavity and situation such as collision, therefore require the product after the plasticizing to have certain mechanical characteristic.Also there is deficiency in this respect of present plasticiser.
Summary of the invention
The purpose of this invention is to provide a kind of plasticiser.
The present invention also aims to improve the preparation method of this plasticiser.
In order to realize purpose of the present invention, the invention provides a kind of plasticiser, it comprises the product of following material:
The glutaraldehyde water solution of 25 weight %;
The resorcinol aqueous solution of 45 weight %;
The sodium hydrate aqueous solution of 50 weight %;
Sodium monofluorophosphate; And
Silicon dioxide; Wherein
The mol ratio of described glutaraldehyde, described resorcinol, described sodium hydroxide, described sodium monofluorophosphate, described silicon dioxide is 5: 5: 0.1: 3: 1.
Wherein, sodium monofluorophosphate is a material commonly used in the dentistry, and it can be by commercial acquisition, for example can be available from the high phosphorous chemical industry Co., Ltd of swelling in Xiangfan City.
Silicon dioxide preferably adopts nano silicon, for example can converge smart Ya Nami new material company limited available from Shanghai.
In addition, the present invention also provides the preparation method of this plasticiser, and this method comprises:
Prepare the glutaraldehyde water solution of 25 weight %, the resorcinol aqueous solution of 45 weight % and the sodium hydrate aqueous solution of 50 weight % respectively; And
Described glutaraldehyde water solution, described resorcinol aqueous solution, described sodium hydrate aqueous solution and sodium monofluorophosphate, silicon dioxide are mixed.
The flexural strength of plasticiser of the present invention is better, and its preparation method is simple, is very suitable for large-scale promotion use clinically.
The specific embodiment
The following examples will give further instruction to the present invention, but not thereby limiting the invention.
Embodiment 1
The sodium hydrate aqueous solution for preparing glutaraldehyde (available from the Laohekou Jing Hong chemical industry Co., Ltd) aqueous solution of 25 weight %, the resorcinol of 45 weight % (available from sea, Jiangsu international corporation of enterprise) aqueous solution and 50 weight % respectively.Mol ratio according to glutaraldehyde, resorcinol, sodium hydroxide, sodium monofluorophosphate, nano silicon is 5: 5: 0.1: 3: 1 ratio; above-mentioned solution and sodium monofluorophosphate (available from the high grand phosphorous chemical industry Co., Ltd in Xiangfan City), nano silicon (available from converging smart Ya Nami new material company limited in Shanghai) are added in the metal die of 60mm * 8mm * 4mm; coat silicone oil mold release agent, curing and demolding in the metal die in advance.
Embodiment 2
Prepare plasticiser according to the mode identical with embodiment 1, difference is that the mol ratio of glutaraldehyde, resorcinol, sodium hydroxide, sodium monofluorophosphate, nano silicon is 5: 5: 0.1: 1: 1.
Embodiment 3
Prepare plasticiser according to the mode identical with embodiment 1, difference is that the mol ratio of glutaraldehyde, resorcinol, sodium hydroxide, sodium monofluorophosphate, nano silicon is 5: 5: 0.1: 2: 1.
Embodiment 4
Prepare plasticiser according to the mode identical with embodiment 1, difference is that the mol ratio of glutaraldehyde, resorcinol, sodium hydroxide, sodium monofluorophosphate, nano silicon is 5: 5: 0.1: 4: 1.
Embodiment 5
Prepare plasticiser according to the mode identical with embodiment 1, difference is that the mol ratio of glutaraldehyde, resorcinol, sodium hydroxide, sodium monofluorophosphate, nano silicon is 5: 5: 0.1: 3: 2.
Embodiment 6
Prepare plasticiser according to the mode identical with embodiment 1, difference is that the mol ratio of glutaraldehyde, resorcinol, sodium hydroxide, sodium monofluorophosphate, nano silicon is 5: 5: 0.1: 3: 0.5.
Comparative Examples 1
Prepare plasticiser according to the mode identical with embodiment 1, difference is not use sodium monofluorophosphate and nano silicon, thereby makes conventional resin.
The mensuration of flexural strength
The test specimen piece is taken out from mould, and finishing, polishing back are checked with slide gauge, make each test specimen size consistent.Test is preceding to be the thickness and the width at the vernier caliper measurement test specimen middle part of 0.02mm with precision, test specimen is carried out flexural strength measure on LJ-500 type tensile testing machine.Repeat 3 times, meansigma methods sees the following form.
Bending resistance test carries out on LJ-500 type tensile testing machine, and span is 50 ± 0.5mm, pressure head radius 2.5 ± 0.1mm, and pressure head speed is 10mm/min, bending strength is calculated as follows:
Bending strength=1.5FL/bd
2
Wherein, F-maximum load (N); L-span (mm); B-specimen width (mm);
D-specimen thickness (mm).
Table 1
| Sample No. | Flexural strength (MPa) |
| Embodiment 1 | 38.4 |
| Embodiment 2 | 26.7 |
| Embodiment 3 | 31.5 |
| Embodiment 4 | 35.8 |
| Embodiment 5 | 36.4 |
| Embodiment 6 | 34.8 |
| Comparative Examples 1 | 18.6 |
As seen from the above table, along with the content increase of sodium monofluorophosphate, flexural strength increases, but in embodiment 4, when the content of sodium monofluorophosphate surpassed the content of the sodium monofluorophosphate among the embodiment 1, flexural strength descended.
Claims (2)
1. plasticiser, its product by following material constitutes:
The glutaraldehyde water solution of 25 weight %;
The resorcinol aqueous solution of 45 weight %;
The sodium hydrate aqueous solution of 50 weight %;
Sodium monofluorophosphate; And
Silicon dioxide; Wherein
The mol ratio of described glutaraldehyde, described resorcinol, described sodium hydroxide, described sodium monofluorophosphate, described silicon dioxide is 5: 5: 0.1: 3: 1.
2. the preparation method of a plasticiser according to claim 1, this method comprises:
Prepare the glutaraldehyde water solution of 25 weight %, the resorcinol aqueous solution of 45 weight % and the sodium hydrate aqueous solution of 50 weight % respectively; And
Described glutaraldehyde water solution, described resorcinol aqueous solution, described sodium hydrate aqueous solution and sodium monofluorophosphate, silicon dioxide are mixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101629382A CN101617993B (en) | 2009-08-20 | 2009-08-20 | Plasticizer and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101629382A CN101617993B (en) | 2009-08-20 | 2009-08-20 | Plasticizer and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101617993A CN101617993A (en) | 2010-01-06 |
| CN101617993B true CN101617993B (en) | 2011-04-13 |
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| CN2009101629382A Expired - Fee Related CN101617993B (en) | 2009-08-20 | 2009-08-20 | Plasticizer and preparation method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1172637A (en) * | 1996-07-25 | 1998-02-11 | 可乐丽股份有限公司 | Metal fluoride particles and dental composition including said metal fluoride purticles |
| CN1394226A (en) * | 2000-11-02 | 2003-01-29 | 可乐丽股份有限公司 | Fillings and composite dental materials containing fillings |
-
2009
- 2009-08-20 CN CN2009101629382A patent/CN101617993B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1172637A (en) * | 1996-07-25 | 1998-02-11 | 可乐丽股份有限公司 | Metal fluoride particles and dental composition including said metal fluoride purticles |
| CN1394226A (en) * | 2000-11-02 | 2003-01-29 | 可乐丽股份有限公司 | Fillings and composite dental materials containing fillings |
Non-Patent Citations (3)
| Title |
|---|
| 李之轶等.可见光固化齿科充填复合树脂挠曲强度研究.《上海塑料》.2005,(第1期),第10-13页. * |
| 李哲光等.戊二醛与酚醛树脂塑化剂基本特性的实验观察.《宁波医学》.1996,第8卷(第5期),第255-257,303页. * |
| 郭菁等.单氟磷酸钠对口腔义齿基托树脂材料力学性能的影响.《口腔颌面修复学杂志》.2009,第10卷(第2期),第73-75页. * |
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| CN101617993A (en) | 2010-01-06 |
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Granted publication date: 20110413 Termination date: 20110820 |