CN115431376A - High-strength large-scale complex ceramic biscuit and three-dimensional spray printing forming method and equipment thereof - Google Patents
High-strength large-scale complex ceramic biscuit and three-dimensional spray printing forming method and equipment thereof Download PDFInfo
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/001—Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/243—Setting, e.g. drying, dehydrating or firing ceramic articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
- B28B17/0063—Control arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
- B28B17/0063—Control arrangements
- B28B17/0081—Process control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
Abstract
The invention belongs to the field of additive manufacturing, and particularly discloses a high-strength large-scale complex ceramic biscuit, a three-dimensional spray printing forming method and equipment thereof, wherein the method comprises the following steps: s1, preparing ink by using thermosetting resin, photosensitive resin and a photoinitiator as raw materials; mixing a thermosetting resin curing agent, an infrared absorber and ceramic powder, then spreading the mixture and preheating the mixture; s2, performing single-layer ink jet according to biscuit three-dimensional model slice information, and synchronously irradiating a single-layer forming area in real time by adopting ultraviolet light to cross-link and solidify photosensitive resin; s3, heating the single-layer forming area by adopting infrared light to accelerate the ink curing reaction and finish the forming of a slice layer; and S4, repeating the steps S1 to S3 until the ceramic biscuit forming is completed. The invention can solve the problems of low strength, low efficiency, small forming size and the like of the three-dimensional jet printing additive manufacturing ceramic biscuit, and realizes the efficient additive manufacturing forming of the high-strength large-scale complex ceramic biscuit.
Description
Technical Field
The invention belongs to the field of additive manufacturing, and particularly relates to a high-strength large-scale complex ceramic biscuit, and a three-dimensional spray printing forming method and equipment thereof.
Background
Three-dimensional jet Printing (3 DP), also known as Binder Jetting (BJ), additive manufacturing technology utilizes a nozzle to selectively jet ink to bond powder layer by layer to obtain a Three-dimensional solid part, has the advantages of no need of a mold, wide material application range, high material utilization rate and the like, and is widely applied to the preparation of metal, polymer and ceramic material parts. However, the 3DP technique still has the following outstanding problems in the preparation of ceramic parts: (1) the 3DP formed ceramic biscuit has low strength, is easy to bend and deform when used for preparing large-scale complex parts, and cannot meet the use requirements of post-treatment process and ceramic parts; (2) the ink curing speed is slow, and after jet printing is finished, the ink needs to be kept stand for a long time to wait for ink curing, so that the forming efficiency is reduced. (3) The ink is not cured uniformly, so that the curing performance in the biscuit is poor, and the forming size is limited;
in response to the above problems, some patents have been published that improve ink formulations and post-treatment processes to improve ceramic green body strength, forming efficiency and size. For example, in patents CN202010723437.3 and CN201910277849.6, the wetting effect of the ink and the powder is improved by component adjustment, and the contact area of the ink and the powder is increased to improve the biscuit strength, but the number of chemical bond polymerization in the unit volume of the ink is not increased, so that the biscuit strength is improved to a limited extent, and the use requirement of the post-treatment process is difficult to meet; CN105562623A and CN202110473283.1 adopt microwave heating to solidify the ink-jet layer, in order to improve the intensity and shaping efficiency of the ceramic biscuit, but the size of the microwave heating cavity is limited, and it is still difficult to satisfy the shaping requirement of the rapid solidification of large-scale complex ceramic biscuit.
In conclusion, the 3DP technology can form a complex ceramic biscuit without a die, reduce the cost and shorten the process period, but the ceramic biscuit formed by the existing 3DP technology has the problems of low strength, low efficiency and small forming size.
Disclosure of Invention
Aiming at the defects or improvement requirements of the prior art, the invention provides a high-strength large-scale complex ceramic biscuit, a three-dimensional spray printing forming method and equipment thereof, and aims to form the high-strength large-scale complex ceramic biscuit and avoid the defects of warping, deformation and the like caused by uneven self gravity and stress when the large-scale biscuit is transported at different post-processing stations.
In order to achieve the above object, according to a first aspect of the present invention, a method for three-dimensional spray-printing and forming a high-strength large-scale complex ceramic biscuit is provided, comprising the following steps:
s1, preparing ink by using thermosetting resin, photosensitive resin and a photoinitiator as raw materials; mixing a thermosetting resin curing agent, an infrared absorber and ceramic powder, then spreading the mixture and preheating the mixture;
s2, performing single-layer ink jet according to biscuit three-dimensional model slice information, and synchronously irradiating a single-layer forming area in real time by adopting ultraviolet light to cross-link and solidify photosensitive resin;
s3, heating the single-layer forming area by adopting infrared light to accelerate the ink curing reaction and finish the forming of a sliced layer;
and S4, repeating the steps S1 to S3 until the ceramic biscuit forming is completed.
Preferably, the ultraviolet light is synchronously scanned by using a point light source or irradiates the forming region by using a surface light source, and the infrared light is irradiated to the forming region by using a surface exposure mode.
More preferably, the power density of the infrared light is 0.02 to 0.10 W.s/mm 2 The exposure irradiation time of the surface is 0.5-5.0 s.
More preferably, the infrared absorber is one or more of carbon black, a triamine dye and an azo dye, and the addition amount of the infrared absorber is 1.0-5.0% of the mass of the ceramic powder.
More preferably, the thermosetting resin is one or two of furan resin and phenolic resin, and the addition amount of the thermosetting resin is 0.5-2.0% of the mass of the ceramic powder; the photosensitive resin is one or two of acrylate resin and epoxy resin with single functional group, and the addition amount of the photosensitive resin is 0.1-1.0% of the mass of the ceramic powder.
More preferably, the photoinitiator is one or two of a free radical photoinitiator and a cationic initiator, and the addition amount of the photoinitiator is 0.1-3.0% of the mass of the photosensitive resin; the addition amount of the thermosetting resin curing agent is 30-70% of the mass of the thermosetting resin.
More preferably, the ceramic powder is one or more of alumina, zirconia, silica, titania, silicon nitride, boron nitride, titanium nitride, silicon carbide, boron carbide and titanium carbide, and the particle size of the powder is 10-80 μm; the preheating temperature of the powder bed is 40-80 ℃.
According to a second aspect of the invention, an apparatus for implementing the above-mentioned high-strength large-scale complex ceramic biscuit three-dimensional spray printing forming method is provided, which comprises a three-dimensional spray printing additive manufacturing assembly, an ultraviolet light-assisted curing assembly, an infrared heating assembly and a control system, wherein:
the three-dimensional jet printing additive manufacturing assembly comprises a shell and a forming platform, wherein a heat insulation layer is arranged on the inner wall of the shell, and an isolation unit is arranged in the shell to divide a forming cavity into an upper half part and a lower half part; the forming platform is arranged at the lower half part and used for powder paving, preheating and ink jetting; the ultraviolet light auxiliary curing component and the infrared heating component are arranged on the lower half part;
the ultraviolet light auxiliary curing component comprises an ultraviolet light laser and an ultraviolet light vibrating mirror/reflecting mirror, wherein the ultraviolet light laser emits ultraviolet light, and the ultraviolet light irradiates a forming area through the ultraviolet light vibrating mirror/reflecting mirror;
the infrared heating assembly comprises an infrared laser and an infrared reflector, the infrared laser emits infrared light, and the infrared light irradiates the forming area through the infrared reflector;
the control system is used for processing the biscuit three-dimensional model to be formed, controlling the ultraviolet light auxiliary curing assembly to synchronously irradiate a forming area, and driving all parts of the equipment to operate.
More preferably, the wavelength of the ultraviolet laser is 355-420 nm; the infrared laser is CO 2 One or both of a laser or a YAG laser.
According to a third aspect of the invention, a high-strength large-scale complex ceramic biscuit is provided, which is obtained by adopting the high-strength large-scale complex ceramic biscuit three-dimensional jet printing forming method.
Generally, compared with the prior art, the above technical solution conceived by the present invention mainly has the following technical advantages:
1. aiming at the three-dimensional jet printing additive manufacturing process based on the powder bed, the photosensitive resin is added into the ink, and the ultraviolet light is adopted to synchronously irradiate a single-layer forming area in real time, so that the photosensitive resin in the ink is quickly crosslinked and cured, the depth of the ink penetrating into the powder bed is controlled, the thickness (forming precision) of a forming layer can be effectively improved, sufficient heat source is provided by the infrared light to accelerate the ink curing reaction, and the forming efficiency and the forming strength are improved; thereby improving the precision and the strength of the 3DP formed ceramic biscuit through the combined action of ultraviolet light and infrared light. The invention can form high-strength large-scale complex ceramic biscuit, and avoid the defects of warping, deformation and the like caused by uneven self gravity and stress when the large-scale biscuit is carried at different post-processing stations.
2. When the ink permeates into the ink to a large thickness, the transmission capacity of infrared light irradiation is attenuated in the thickness direction, so that the curing effect is uneven; according to the invention, after ultraviolet light is adopted, the ink infiltration thickness can be effectively controlled, the infrared curing precision is improved, the powder can receive infrared radiation more completely, the infrared curing effect is more uniform, and the attenuation problem along the thickness direction is reduced. Thereby ensuring the precision and the strength of the 3DP formed ceramic biscuit and effectively preventing the problem of uneven curing effect in the thickness direction caused by single infrared curing.
3. The infrared heating component in the invention is directly exposed on the surface of the forming table top, and is used for providing a heat source to accelerate the chemical reaction between the ink and the curing agent in the powder, so that the number of polymeric bonds in the ink per unit volume can be increased, and the strength and the forming efficiency of the biscuit are greatly improved.
4. According to the invention, the infrared absorbent is added into the powder, so that the absorption efficiency of the powder on infrared laser is improved, the heat energy absorption capacity and the absorption efficiency are improved, and the ink curing reaction efficiency and the biscuit strength are accelerated. Furthermore, by matching with infrared parameters and controlling the addition amount of the infrared absorbent, the infrared curing reaction can be ensured to be sufficient at the absorbed temperature under the action of infrared light, and the infrared initiator can be prevented from remaining, so that the problem that uncured powder is sticky due to overhigh temperature of a powder bed is solved.
Drawings
FIG. 1 is a flow chart of three-dimensional spray printing forming of a high-strength large-scale complex ceramic biscuit according to an embodiment of the invention;
fig. 2 is a schematic structural diagram of a high-strength large-scale complex ceramic biscuit three-dimensional spray printing forming device according to an embodiment of the invention.
The same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein: 10-shell, 11-ultraviolet laser, 12-ultraviolet vibrating mirror/reflecting mirror, 13-infrared reflecting mirror, 14-infrared laser, 15-insulating layer, 16-powder bed preheating unit, 17-powder spreading roller, 18-powder feeding cylinder, 19-integrated nozzle, 110-forming cylinder, 111-biscuit, 112-forming cylinder lifting mechanism and 20-isolation unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The embodiment of the invention provides a high-strength large-scale complex ceramic biscuit three-dimensional spray printing forming method, as shown in figure 1, comprising the following steps:
s1, preparing ink by using thermosetting resin, photosensitive resin and a photoinitiator as raw materials; uniformly mixing a thermosetting resin curing agent, an infrared absorber and ceramic powder, and then performing powder paving and preheating treatment;
s2, performing single-layer ink jet according to the three-dimensional model slice information of the part to be formed, and synchronously irradiating a single-layer forming area in real time by adopting ultraviolet light to quickly crosslink and solidify photosensitive resin in the ink;
s3, heating the single-layer forming area by adopting infrared light to accelerate the ink curing reaction and finish the forming of a slice layer;
and S4, repeating the steps S1 to S3, and forming the part to be formed layer by layer until a biscuit 111 of the part to be formed is obtained on a forming table.
Preferably, the thermosetting resin is one or two of furan resin and phenolic resin, and the addition amount of the thermosetting resin is preferably 0.5-2.0% of the mass of the ceramic powder; not only can the thermosetting effect be ensured, but also the viscosity of the ink can be prevented from increasing.
Preferably, the photosensitive resin is one or two of monofunctional acrylate resin and monofunctional epoxy resin, and the addition amount of the photosensitive resin is preferably 0.1-1.0% of the mass of the ceramic powder; not only can ensure the ultraviolet curing effect, but also can prevent the viscosity of the ink from increasing.
Preferably, the photoinitiator is one or two of a free radical photoinitiator and a cationic initiator, and the addition amount of the photoinitiator is preferably 0.1-3.0% of the mass of the photosensitive resin; not only can ensure the complete crosslinking of the photosensitive resin, but also can prevent the photosensitive resin from influencing the curing effect due to excessive ultraviolet exposure.
Preferably, the ceramic powder is one or more of alumina, zirconia, silicon dioxide, titanium dioxide, silicon nitride, boron nitride, titanium nitride, silicon carbide, boron carbide and titanium carbide, and the particle size of the powder is preferably 10-80 μm; the particle size is the optimal size distribution of the powder bed additive manufacturing process, and not only can the flowability of the powder be ensured, but also the stacking density of the powder bed can be ensured.
Preferably, the addition amount of the thermosetting resin curing agent is 30-70% of the mass of the thermosetting resin; not only can ensure complete reaction with thermosetting resin, but also can prevent incomplete thermosetting reaction.
Preferably, the infrared absorber is one or more of carbon black, a triamine dye and an azo dye, and the addition amount of the infrared absorber is preferably 1.0-5.0% of the mass of the ceramic powder; the infrared curing powder can ensure that the absorbed temperature is enough for infrared curing reaction under the action of infrared light, and can prevent the residual infrared photoinitiator from causing the adhesion of uncured powder due to overhigh temperature of a powder bed.
Preferably, the preheating temperature of the powder bed is 40-80 ℃; not only can ensure the fluidity of the powder, but also can prevent the adhesion among the uncured powder caused by overhigh temperature.
Preferably, the infrared laser power density is 0.02-0.10 Ws/mm 2 And the surface exposure irradiation time is 0.5-5.0 s.
In a preferred embodiment of the present invention, the high-strength large-scale complex ceramic biscuit three-dimensional spray printing forming equipment constructed for implementing the method includes a three-dimensional spray printing additive manufacturing assembly, an ultraviolet light-assisted curing assembly, an infrared heating assembly and a control system, as shown in fig. 2, wherein:
the three-dimensional jet printing additive manufacturing assembly comprises a shell 10 and a forming platform, wherein the forming platform comprises a powder bed preheating unit 16, a powder spreading roller 17, a powder feeding cylinder 18, an integrated nozzle 19, a forming cylinder 110 and a forming cylinder lifting mechanism 112; the inner side of the shell 10 is provided with a heat insulation layer 15 and an isolation unit 20, the isolation unit 20 divides the forming cavity into an upper half part and a lower half part, the upper half part is provided with a laser and a galvanometer unit, and the lower half part is provided with the forming platform.
The ultraviolet light auxiliary curing component adopts a point light source or a surface light source and is used for synchronously matching with the irradiation forming area, so that the photosensitive resin in the ink is quickly crosslinked and cured, and the biscuit strength is improved. Specifically, the ultraviolet light auxiliary curing component comprises an ultraviolet light laser 11 and an ultraviolet light vibrating mirror/reflecting mirror 12, and in the ink jet process of the integrated nozzle 19, the ultraviolet light laser 11 emits a point light source or a surface light source to synchronously irradiate a forming area, so that photosensitive resin in ink is crosslinked and cured, and the strength of a biscuit is improved.
The infrared heating assembly adopts a surface exposure mode, and directly irradiates the formed powder bed after single-layer ink jet to provide sufficient heat source to accelerate the ink curing reaction and improve the forming efficiency and strength. Specifically, the infrared heating component comprises an infrared laser 14 and an infrared reflector 13, after the single-layer ink jet and ultraviolet irradiation is completed, the infrared laser 14 is adopted to perform surface exposure on the formed powder bed, so that enough heat source is provided to accelerate the chemical reaction of the ink and the curing agent in the powder, and the three-dimensional jet printing forming efficiency and strength are improved.
The control system is used for processing a CAD model of a part to be formed, controlling the ultraviolet light auxiliary curing assembly to synchronously match with the irradiation forming area, and driving the equipment to run.
Preferably, the wavelength of the ultraviolet laser 11 is 355 to 420nm.
Preferably, the infrared laser 14 is CO 2 One or both of a laser or a YAG laser.
The following are specific examples:
example 1
Ink: the thermosetting resin is furan resin, and the addition amount of the furan resin is 0.5 percent of the mass of the ceramic powder; the photosensitive resin is acrylate resin with a single functional group, and the addition amount of the photosensitive resin is 0.1 percent of the mass of the ceramic powder; the photoinitiator is free radical photoinitiator, and the addition amount of the photoinitiator is 0.1 percent of the mass of the photosensitive resin.
Powder: the ceramic powder is alumina, the grain diameter is 80 mu m, and the addition amount of the thermosetting resin curing agent is 30 percent of the mass of the thermosetting resin; the infrared absorbent is azo dye, and the addition amount of the infrared absorbent is 1.0 percent of the mass of the ceramic powder.
Preheating the powder bed to 60 ℃, then carrying out ink-jet printing, and simultaneously irradiating a single-layer forming area by adopting an ultraviolet light point light source; then, the surface exposure is carried out on the forming area by infrared light, and the power density of the infrared light is 0.02 W.s/mm 2 The surface exposure irradiation time was 5s.
Example 2
Ink: the thermosetting resin is phenolic resin, and the adding amount of the thermosetting resin is 1.25 percent of the mass of the ceramic powder; the photosensitive resin is epoxy resin with a single functional group, and the addition amount of the photosensitive resin is 0.5 percent of the mass of the ceramic powder; the photoinitiator is a cation-based photoinitiator, and the addition amount of the photoinitiator is 1.5% of the mass of the photosensitive resin.
Powder: the ceramic powder is zirconia, the particle size is 45 mu m, and the addition amount of the thermosetting resin curing agent is 50 percent of the mass of the thermosetting resin; the infrared absorbent is carbon black, and the adding amount of the infrared absorbent is 3.0 percent of the mass of the ceramic powder.
Preheating the powder bed to 40 ℃, then carrying out ink-jet printing, and simultaneously irradiating a single-layer forming area by adopting an ultraviolet light point light source; then, the surface exposure is carried out on the forming area by infrared light, and the power density of the infrared light is 0.06 W.s/mm 2 The surface exposure irradiation time was 2.5s.
Example 3
Ink: the thermosetting resin is furan resin, and the addition amount of the furan resin is 2.0 percent of the mass of the ceramic powder; the photosensitive resin is acrylate resin with a single functional group, and the addition amount of the photosensitive resin is 1.0 percent of the mass of the ceramic powder; the photoinitiator is a free radical photoinitiator, and the addition amount of the photoinitiator is 3.0 percent of the mass of the photosensitive resin.
Powder: the ceramic powder is silicon dioxide, the particle size is 10 mu m, and the addition amount of the thermosetting resin curing agent is 70 percent of the mass of the thermosetting resin; the infrared absorber is a triamine dye, and the addition amount of the infrared absorber is 5.0 percent of the mass of the ceramic powder.
Preheating the powder bed to 80 ℃, then carrying out ink-jet printing, and simultaneously irradiating a single-layer forming area by adopting an ultraviolet light point light source; then, the surface exposure is carried out on the forming area by infrared light, and the power density of the infrared light is 0.1 W.s/mm 2 The surface exposure irradiation time was 0.5s.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A three-dimensional spray printing forming method for a high-strength large-scale complex ceramic biscuit is characterized by comprising the following steps:
s1, preparing ink by using thermosetting resin, photosensitive resin and a photoinitiator as raw materials; mixing a thermosetting resin curing agent, an infrared absorber and ceramic powder, then spreading the mixture and preheating the mixture;
s2, performing single-layer ink jet according to biscuit three-dimensional model slice information, and synchronously irradiating a single-layer forming area in real time by adopting ultraviolet light to cross-link and solidify photosensitive resin;
s3, heating the single-layer forming area by adopting infrared light to accelerate the ink curing reaction and finish the forming of a sliced layer;
and S4, repeating the steps S1 to S3 until the ceramic biscuit forming is completed.
2. The method according to claim 1, wherein the ultraviolet light is applied to the area by a point source synchronous scanning or a surface source, and the infrared light is applied to the area by a surface exposure.
3. The method according to claim 2, wherein the power density of the infrared light is 0.02-0.10 w.s/mm 2 The exposure irradiation time of the surface is 0.5-5.0 s.
4. The three-dimensional jet printing forming method of a high-strength large-scale complex ceramic biscuit according to claim 3, characterized in that the infrared absorber is one or more of carbon black, a triamine dye and an azo dye, and the addition amount of the infrared absorber is 1.0-5.0% of the mass of the ceramic powder.
5. The three-dimensional jet printing forming method of the high-strength large-scale complex ceramic biscuit according to claim 1, characterized in that the thermosetting resin is one or two of furan resin and phenolic resin, and the addition amount is 0.5-2.0% of the mass of the ceramic powder; the photosensitive resin is one or two of acrylate resin and epoxy resin with single functional group, and the adding amount of the photosensitive resin is 0.1-1.0% of the mass of the ceramic powder.
6. The method for three-dimensional spray-printing and forming of a large-scale and complex high-strength ceramic biscuit according to claim 1, wherein the photoinitiator is one or two of a free radical photoinitiator and a cationic initiator, and the addition amount of the photoinitiator is 0.1-3.0% of the mass of the photosensitive resin; the addition amount of the thermosetting resin curing agent is 30-70% of the mass of the thermosetting resin.
7. The three-dimensional spray-printing forming method of the high-strength large-scale complex ceramic biscuit according to any one of claims 1 to 6, characterized in that the ceramic powder is one or more of alumina, zirconia, silica, titania, silicon nitride, boron nitride, titanium nitride, silicon carbide, boron carbide and titanium carbide, and the particle size of the powder is 10 to 80 μm; the preheating temperature of the powder bed is 40-80 ℃.
8. An apparatus for implementing the high-strength large-scale complex ceramic biscuit three-dimensional spray printing forming method according to any one of claims 1 to 7, which comprises a three-dimensional spray printing additive manufacturing assembly, an ultraviolet light-assisted curing assembly, an infrared heating assembly and a control system, wherein:
the three-dimensional jet printing additive manufacturing assembly comprises a shell (10) and a forming platform, wherein a heat insulation layer (15) is arranged on the inner wall of the shell (10), and an isolation unit (20) is arranged in the shell (10) to divide a forming cavity into an upper half part and a lower half part; the forming platform is arranged at the lower half part and used for powder paving, preheating and ink jetting; the ultraviolet light auxiliary curing component and the infrared heating component are arranged on the lower half part;
the ultraviolet light auxiliary curing component comprises an ultraviolet light laser (11) and an ultraviolet light vibrating mirror/reflecting mirror (12), wherein the ultraviolet light laser (11) emits ultraviolet light, and the ultraviolet light irradiates a forming area through the ultraviolet light vibrating mirror/reflecting mirror (12);
the infrared heating component comprises an infrared laser (14) and an infrared light reflector (13), the infrared laser (14) emits infrared light, and the infrared light irradiates a forming area through the infrared light reflector (13);
the control system is used for processing the biscuit three-dimensional model to be formed, controlling the ultraviolet light auxiliary curing assembly to synchronously irradiate a forming area, and driving all parts of the equipment to operate.
9. The arrangement according to claim 8, characterized in that the ultraviolet laser (11) has a wavelength of 355 to 420nm; the infrared laser (14) is CO 2 One or both of a laser or a YAG laser.
10. A high-strength large-sized complex ceramic biscuit characterized by being obtained by the three-dimensional spray-printing forming method of the high-strength large-sized complex ceramic biscuit according to any one of claims 1 to 7.
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