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CN-116350522-B - Stamp composition, stamp material, stamp and method for preparing the same

CN116350522BCN 116350522 BCN116350522 BCN 116350522BCN-116350522-B

Abstract

The invention discloses a die composition, a die material, a die and a preparation method thereof, and belongs to the technical field of photo-curing. The stamp composition comprises, by mass, 10% -25% of an oligomer, 1% -5% of an acrylic monomer, 0.05% -1% of a photoinitiator, 0.5% -2% of a dispersing agent and 62% -85% of a silica filler, wherein the oligomer comprises polyurethane acrylate with a functionality of 3-9. The impression composition is prepared by uniformly mixing the above raw materials, and is further molded into an optically curable impression material by a mold, and the impression intermediate has excellent bending resistance (i.e., tear resistance), detail reproducibility and storage stability before curing. When in use, the light curing mode is directly adopted to cure the impression material, the curing time is proper and controllable, the curing degree is high, the dimension stability is good during curing, and the prepared impression has high hardness.

Inventors

  • WU YAN
  • HUANG QINGYANG

Assignees

  • 上海飞凯材料科技股份有限公司

Dates

Publication Date
20260505
Application Date
20211228

Claims (12)

  1. 1. The stamp composition is characterized by comprising, by mass, 10% -25% of an oligomer, 1% -5% of an acrylic monomer, 0.05% -1% of a photoinitiator, 0.5% -2% of a dispersing agent and 62% -85% of a silica filler; wherein the oligomer comprises urethane acrylate with a functionality of 3-9; The oligomer further comprises bisphenol A type epoxy acrylate, and the mass ratio of the polyurethane acrylate to the bisphenol A type epoxy acrylate is 1-3:1; the silica filler comprises fumed silica and powder silica; the mass percentage of the fumed silica in the impression composition is 1% -5%; The mass percentage of the powder silicon dioxide in the impression composition is 70-80%; the particle size of the powder silicon dioxide is 50-100 mu m, and the surface modification treatment is carried out by a silane coupling agent.
  2. 2. The stamp composition of claim 1, wherein the polyurethane acrylate has a viscosity of greater than 10000cps at 60 ℃.
  3. 3. The stamp composition according to claim 2, wherein the polyurethane acrylate is at least one of polyester polyurethane, polycarbonate polyurethane, polyether polyurethane.
  4. 4. The stamp composition of claim 1, wherein the acrylate monomer is at least two of a monofunctional acrylate, a difunctional acrylate, and a trifunctional acrylate.
  5. 5. The stamp composition of claim 4, wherein the monofunctional acrylate is selected from at least one of hydroxyethyl acrylate, butyl acrylate, isooctyl acrylate, isobornyl acrylate, cyclohexyl acrylate, n-hexyl acrylate, phenoxyethyl acrylate, tetrahydrofuranyl acrylate; the difunctional acrylate is at least one selected from polyethylene glycol dimethacrylate, 1, 6-hexanediol diacrylate, bisphenol A diacrylate and tripropylene glycol diacrylate; The trifunctional acrylate is at least one selected from pentaerythritol triacrylate and trimethylolpropane triacrylate.
  6. 6. The stamp composition of claim 1, wherein the photoinitiator comprises at least one of 2,4,6 (trimethylbenzoyl) diphenyl phosphine oxide, phenyl bis (2, 4, 6-trimethylbenzoyl) phosphine oxide, 2-methyl-1- [4- (methylthio) phenyl ] -2- (4-morpholino) -1-propanone, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) butanone.
  7. 7. The stamp composition of claim 1, wherein the urethane acrylate has a refractive index of 1.46 to 1.50; The refractive index of the silica filler is 1.46-1.48.
  8. 8. Impression material, characterized in that it is prepared from an impression composition according to any of claims 1-7.
  9. 9. The impression material according to claim 8, wherein said impression material is a photocurable dental individual tray.
  10. 10. A method of making a stamp, the method comprising: Uniformly stirring the oligomer, the acrylic monomer, the photoinitiator and the dispersing agent at 50-60 ℃, and then continuously adding the silica filler and uniformly stirring to obtain the impression composition, wherein the impression composition is as claimed in any one of claims 1-7; Placing the impression composition in a mold, and pressing the mold by using a tablet press to obtain an impression material; And sequentially carrying out shaping treatment and photo-curing treatment on the impression material to obtain the impression.
  11. 11. The method of making a impression according to claim 10, wherein said shaping treatment is a dental shaping treatment.
  12. 12. A stamp, characterized in that the stamp is produced by the method of claim 10 or 11.

Description

Stamp composition, stamp material, stamp and method for preparing the same Technical Field The invention relates to the technical field of photo-curing, in particular to a die composition, a die material, a die and a preparation method thereof. Background The missing dentition refers to that no natural teeth or tooth roots are reserved on the whole dental arch, also called toothless jaws, and along with the prolonging of the life span of people, the number of patients with toothless jaws to seek medical services is continuously increased. The complete denture refers to a denture worn when the complete dentition of a patient is lost, and adopts artificial materials to replace the complete dentition (artificial teeth) of the upper jaw or the lower jaw which is lost and related tissues (base), thereby being the most common repairing mode of the clinical toothless patient. Before complete denture restoration, the anatomic form of the toothless jaw alveolar ridge and surrounding soft and hard tissues needs to be duplicated through a plastic impression material so as to provide a good structural foundation for a subsequent technician to make the denture. Accurate dentures-less impressions are critical for successful insertion of complete dentures. However, in the actual clinical operation process, the oral cavity forms and the alveolar ridge conditions of different patients are quite different, the finished tray cannot meet the conditions of dental arches and the alveolar ridge of the individuals of the patients, and at present, the accuracy of the impression is improved by manufacturing a secondary impression through manufacturing an individual tray, the individual differences of the patients are met, and the repairing effect of the complete denture is ensured. The known manufacturing materials of the individual trays include alginate materials, agar materials, rubber materials and the like, however, the individual trays manufactured by the materials have the problems of poor bending property, poor hardness, long curing time, complicated using steps (for example, when the individual trays are used, the alginate materials need to be mixed with water, the silica gel materials need to be baked for a long time and the like), and the like, so that the application of the materials as the individual trays has a plurality of inconveniences. Disclosure of Invention In view of the above, the present invention provides a stamp composition, a stamp material, a stamp, and a method of preparing the same, which can solve the above-mentioned technical problems. Specifically, the method comprises the following technical scheme: In one aspect, a stamp composition is provided, which comprises, by mass, 10% -25% of an oligomer, 1% -5% of an acrylic monomer, 0.05% -1% of a photoinitiator, 0.5% -2% of a dispersant, and 62% -85% of a silica filler; Wherein the oligomer comprises urethane acrylate with a functionality of 3-9. In some possible implementations, the polyurethane acrylate has a viscosity of greater than 10000cps at 60 ℃. In some possible implementations, the polyurethane acrylate is at least one of a polyester polyurethane, a polycarbonate polyurethane, a polyether polyurethane. In some possible implementations, the oligomer further includes bisphenol a epoxy acrylate, and the mass ratio of the urethane acrylate to the bisphenol a epoxy acrylate is 1-3:1. In some possible implementations, the acrylate monomer is at least two of a monofunctional acrylate, a difunctional acrylate, and a trifunctional acrylate. In some possible implementations, the monofunctional acrylate is selected from at least one of hydroxyethyl acrylate, butyl acrylate, isooctyl acrylate, isobornyl acrylate, cyclohexyl acrylate, n-hexyl acrylate, phenoxyethyl acrylate, tetrahydrofuranyl acrylate; the difunctional acrylate is at least one selected from polyethylene glycol dimethacrylate, 1, 6-hexanediol diacrylate, bisphenol A diacrylate and tripropylene glycol diacrylate; The trifunctional acrylate is at least one selected from pentaerythritol triacrylate and trimethylolpropane triacrylate. In some possible implementations, the photoinitiator includes at least one of 2,4,6 (trimethylbenzoyl) diphenyl phosphine oxide, phenyl bis (2, 4, 6-trimethylbenzoyl) phosphine oxide, 2-methyl-1- [4- (methylthio) phenyl ] -2- (4-morpholinyl) -1-propanone, 2-benzyl-2-dimethylamino-1- (4-morpholinyl) butanone. In some possible implementations, the urethane acrylate has a refractive index of 1.46 to 1.50; The refractive index of the silica filler is 1.46-1.48. In some possible implementations, the silica filler includes fumed silica and powdered silica; The mass percentage of the fumed silica in the impression material is 1% -5%; The mass percentage of the powder silicon dioxide in the impression material is 70% -80%. In some possible implementations, the particle size of the powdered silica is 50 μm to 100 μm. In some possible implementations, the powdered silica is su