Method for evaluating cleaning effect of photocured 3D printing ceramic body wash

Abstract

The present application relates to a kind of photocuring 3D printing ceramic blank cleaning agent cleaning effect evaluation method, comprising: step 1) using photocuring 3D printing technology to prepare the ceramic blank sample with at least one set structure;Set structure includes one or several of through-hole structure, half-through-hole structure, slit structure, protruding structure, step structure, grid structure;Step 2) using cleaning agent to clean the ceramic blank sample;Step 3) the ceramic blank sample is dried;Step 4) calculate the surface slurry cleaning amount Q of cleaning agent to ceramic blank sample, the surface slurry residual amount C of dried ceramic blank sample, and using white light interferometer to detect dried ceramic blank sample, assesses the cleaning effect of photocuring 3D printing ceramic blank cleaning agent to set structure.The present application is used to evaluate the cleaning effect of photocuring 3D printing ceramic blank cleaning agent to special structure, and provide basis for the optimization of complex structure ceramic blank cleaning process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photocuring additive manufacturing ceramic materials, in particular to a photocuring 3D printing ceramic body cleaning agent cleaning effect evaluation method. BACKGROUND

[0002] The photocuring 3D printing process has been widely used in the preparation of complex structure ceramic parts due to its advantages such as no mold restriction and high forming precision. However, the surface of the photocuring 3D printed ceramic body is left with uncured ceramic slurry, and the secondary curing of the ceramic slurry will affect the precision and surface quality of the ceramic part, so the cleaning and cleaning degree control of the ceramic body are particularly important.

[0003] At present, there are many types of photocuring 3D printing ceramic body cleaning agents, and different cleaning agents have different cleaning effects on different structures. However, the prior art does not provide a photocuring 3D printing ceramic body cleaning agent cleaning effect evaluation method, which cannot predict the cleaning effect of the cleaning agent on different structures and cannot provide a basis for optimizing the cleaning process of complex structure ceramic bodies.

[0004] In addition, the cleaning degree of the photocuring 3D printed ceramic body is mainly judged by the naked eye and optical microscope at present, and the cleaning effect of the body cannot be quantitatively evaluated. Some related technical personnel have tried to use high-resolution microscope images or scanning electron microscope images, and use image processing algorithms to extract color, brightness and other features in the image to obtain quantitative indicators of the cleaning degree. However, these methods have high implementation cost, long test period and cannot be quantitatively analyzed.

[0005] In summary, there is an urgent need for a photocuring 3D printing ceramic body cleaning agent cleaning effect evaluation method to evaluate the cleaning effect of the cleaning agent on ceramic bodies with special structures and to provide a basis for optimizing the cleaning process of ceramic bodies. Further, there is an urgent need to introduce new measurement standards, analysis methods and detection technologies to more accurately evaluate the cleaning effect and provide technical support for the optimization of the manufacturing process and the surface quality of ceramic parts. SUMMARY

[0006] Therefore, the present application provides a photocuring 3D printing ceramic body cleaning agent cleaning effect evaluation method, which can evaluate the cleaning effect of the photocuring 3D printing ceramic body cleaning agent on special structures and provide a basis for optimizing the cleaning process of complex structure ceramic bodies.

[0007] To achieve the above purpose, the present application mainly provides the following technical scheme:

[0008] On one hand, embodiments of the present invention provide a method for evaluating the cleaning effect of a cleaning agent for photopolymer 3D printed ceramic blanks, which includes the following steps:

[0009] Step 1) Prepare a ceramic green body sample with at least one predetermined structure using photopolymerization 3D printing technology; wherein, the predetermined structure includes one or more of the following: through-hole structure, semi-through-hole structure, slit structure, protrusion structure, step structure, and mesh structure;

[0010] Step 2) The ceramic blank sample is cleaned using a photocurable 3D printing ceramic blank cleaning agent to obtain a cleaned ceramic blank sample.

[0011] Step 3) Dry the cleaned ceramic green sample to obtain a dried ceramic green sample.

[0012] Step 4) Calculate the amount of slurry cleaned by the cleaning agent on the surface of the ceramic green body sample (Q), the amount of slurry residue on the surface of the dried ceramic green body sample (C), and use a white light interferometer to detect the printed stacked surface of the dried ceramic green body sample. The cleaning effect of the photopolymer 3D printing ceramic green body cleaning agent on the specified structure is evaluated based on the amount of slurry cleaned (Q), the amount of slurry residue (C), the macroscopic morphology of the specified structure on the dried ceramic green body sample, and the white light interferometry data. It should be noted that "printed stacked surface" refers to the side surfaces that are printed layer by layer during photopolymer 3D printing.

[0013] Preferably, step 1) includes:

[0014] 11) Use design software to design a 3D model with at least one defined structure, slice the 3D model, and export a 3D printing STL file.

[0015] 12) Import the STL file into the photopolymer 3D printer, set the 3D printing parameters, and cure the photopolymer 3D printing ceramic slurry according to the three-dimensional model to obtain a ceramic blank sample with at least one set structure.

[0016] Preferably, the length of the three-dimensional model is 20-25mm, the width is 20-25mm, and the height is 4-8mm; and / or the through-hole structure includes a square through-hole structure and / or a circular through-hole structure; preferably, the side length of the square through-hole structure is 1-4mm; preferably, the diameter of the circular through-hole structure is 1-4mm; the diameter of the semi-through-hole structure is 1-4mm; and / or the width of the slit structure is 0.4-2mm; and / or the mesh structure includes a star-shaped structure; and / or the protrusion structure includes a semi-cylinder, preferably, the diameter of the semi-cylinder is 0.6-1mm.

[0017] Preferably, in the step 2), the ceramic body sample is cleaned by ultrasonic cleaning with a photocuring 3D printing ceramic body cleaning agent for 15-30 minutes to obtain a cleaned ceramic body sample.

[0018] Preferably, in the step 3), the drying temperature is 120-240°C, and the drying time is 120-240 minutes.

[0019] Preferably, in the step 4), according to the actual mass m1 of the ceramic body sample before cleaning, the actual mass m2 of the dried ceramic body sample, the cleaning amount of the cleaning agent on the surface slurry of the ceramic body is calculated, with the unit of %; wherein the calculation formula is as follows:

[0020]

[0021] Preferably, in the step 4), according to the actual mass m2 of the dried ceramic body sample, the theoretical mass m of the dried ceramic body sample, the surface slurry residual amount C of the dried ceramic body sample is calculated, with the unit of %; wherein the calculation formula is as follows:

[0022]

[0023] Preferably, in the step 4), the detection data of the printing stacking surface of the dried ceramic body sample detected by the white light interferometer includes the surface profile data of the dried ceramic body sample; wherein the surface profile data includes the arithmetic mean deviation Sa, the root mean square deviation Sq of the profile and the maximum height Sz of the profile; wherein the units of Sa, Sq and Sz are mm, and the specific calculation formula is as follows:

[0024]

[0025]

[0026] S Z =Z P +Z V ;

[0027] Wherein A is the sampling area when the dried ceramic body sample is tested by the white light interferometer; Z(x, y) is the longitudinal coordinate value of the sampling point in a sampling area; Z P is the height of the highest wave peak in the sampling area, and Z V is the depth of the deepest wave valley in the sampling area.

[0028] Preferably, the detection data of the dried ceramic body sample detected by the white light interferometer further comprises surface three-dimensional topography and roughness data of the dried ceramic body sample; and / or the side length of the detection area when the dried ceramic body sample is detected by the white light interferometer is 100-1000 μm.

[0029] In another aspect, the embodiment of the present application provides a cleaning effect evaluation method of a photocured 3D printed ceramic body cleaning agent, wherein,

[0030] First, the cleaning effect of the photocured 3D printed ceramic body cleaning agent on the ceramic body is preliminarily evaluated according to the surface slurry cleaning amount Q, the surface slurry residual amount C, and the macroscopic morphology of the set structure on the dried ceramic body sample;

[0031] If the preliminary evaluation is qualified, the printing stacking surface on the dried ceramic body sample is then detected by the white light interferometer; if the detection data of the white light interferometer is qualified, it is considered that the cleaning effect of the photocured 3D printed ceramic body cleaning agent is qualified;

[0032] Preferably, if the surface slurry cleaning amount Q is greater than 5% and the surface slurry residual amount C is less than 1%, it is considered that the preliminary evaluation is qualified;

[0033] Preferably, if the white light interferometer detection data of the printing stacking surface is Sa=16-20 mm, Sq=20-22 mm, and Sz=180-210 mm, it is considered that the cleaning effect of the photocured 3D printed ceramic body cleaning agent on the set structure is qualified;

[0034] Preferably, if the ceramic body has multiple set structures, the cleaning effect of the cleaning agent on different set structures is evaluated to provide a reference basis for the cleaning of the ceramic body with one or more set structures;

[0035] In another aspect, the embodiment of the present application provides a cleaning method of a photocured 3D printed ceramic body, wherein the photocured 3D printed ceramic body has one or more set structures; wherein the type of cleaning agent is selected before the photocured 3D printed ceramic body is cleaned; wherein the cleaning effect evaluation method of the photocured 3D printed ceramic body cleaning agent of any one of the above is used to evaluate the cleaning effect of different cleaning agents on the set structure on the photocured 3D printed ceramic body; according to the evaluation result, a qualified cleaning agent is selected to clean the photocured 3D printed ceramic body.

[0036] Compared with the prior art, the cleaning effect evaluation method of the photocured 3D printed ceramic body cleaning agent has at least the following beneficial effects:

[0037] The embodiment of the application provides a kind of photocuring 3D printing ceramic blank cleaning agent cleaning effect evaluation method, it includes the following steps: step 1) using photocuring 3D printing technology to prepare the ceramic blank sample with at least one set structure;Wherein, the set structure includes one or several of through-hole structure, half-through-hole structure, slit structure, protruding structure, step structure, grid structure;Step 2) using photocuring 3D printing ceramic blank cleaning agent to clean the ceramic blank sample, obtain the ceramic blank sample after cleaning treatment;Step 3) the ceramic blank sample after cleaning treatment is dried, and the dried ceramic blank sample is obtained;Step 4) the surface slurry cleaning amount Q of cleaning agent to ceramic blank sample, the surface slurry residual amount C of dried ceramic blank sample, and the printing stack surface of dried ceramic blank sample is detected using white light interferometer;Wherein, according to surface slurry cleaning amount Q, surface slurry residual amount C, the macroscopic morphology of the set structure on the dried ceramic blank sample and the white light interference detection data evaluate the cleaning effect of the photocuring 3D printing ceramic blank cleaning agent on the set structure.Here, regarding the above-mentioned steps, it needs to be explained that (1) the present application is prepared with one or several set structures (i.e., special structures, such as through-hole structure, half-through-hole structure, slit structure, protruding structure, step structure, grid structure), and then the ceramic blank is cleaned using cleaning agent, and the calculation detection is carried out after drying, which can provide a basis for judging the cleaning effect of the cleaning agent on different feature structures (such as different size through holes, half-through holes, slits and half-cylinders, etc. set structure) on the ceramic blank. By comparing the cleaning effect of ceramic blank with different set structures, the cleaning effect of the cleaning agent on various complex structure ceramic parts blanks can be predicted.(2) the scheme of the application provides a quantitative basis for testing the cleaning degree of photocuring 3D printing complex structure ceramic parts;Specifically, by measuring the mass of the ceramic blank sample before and after cleaning, the residual amount and cleaning amount of the surface slurry of the ceramic blank sample are calculated, which provides a basis for optimizing the cleaning process of complex structure ceramic blank.(3) the scheme of the application provides a visual basis for testing the cleaning degree of photocuring 3D printing complex structure ceramic blank;Specifically, the three-dimensional surface topography and surface roughness data of different parts of the ceramic blank sample after cleaning and drying are obtained by using white light interferometer. By observing the distribution of surface topography wave crest and wave trough, the cleaning effect of the cleaning agent on the ceramic blank can be directly obtained;By comparing the roughness of surface topography, an analysis method can be provided for the evaluation of ceramic blank surface quality.(4) the scheme of the application provides a comprehensive basis for testing the cleaning degree of photocuring 3D printing complex structure ceramic blank.By comparing the quantitative data of the residual amount and the cleaning amount of the ceramic green body sample, analyzing the two-dimensional and three-dimensional surface morphology of the ceramic green body sample, and combining the synergistic comparison of the quantitative and visual methods, the cleaning effect can be accurately evaluated, and an effective means is provided for the quality control of the photocured 3D printed ceramic parts.

[0038] The above description is only a summary of the technical solutions of the present application. In order to enable a clearer understanding of the technical means of the present application and to implement the content of the description, the following will be described in detail with the preferred embodiments of the present application and in conjunction with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 is a schematic diagram of a three-dimensional model one provided by an embodiment of the present application; wherein, Figure 1 (a) of the above is a top view of the three-dimensional model one, (b) is a side view of the three-dimensional model one, (c) is a front view of the three-dimensional model one, and (d) is a perspective view of the three-dimensional model one;

[0040] Figure 2 is a schematic diagram of a three-dimensional model two provided by an embodiment of the present application; wherein, Figure 2 (a) of the above is a top view of the three-dimensional model two; Figure 2 (b) of the above is a perspective view of the three-dimensional model two;

[0041] Figure 3 is a physical picture of a ceramic green body sample after cleaning treatment according to an embodiment of the present application;

[0042] Figure 4 is a physical picture of another ceramic sample after cleaning treatment according to an embodiment of the present application;

[0043] Figure 5 is a two-dimensional profile and a three-dimensional profile of the cleaning effect of the cleaning agent on the printing stacking surface of the ceramic green body according to the embodiment 1 of the present application.

[0044] Figure 6 is a scanning electron microscope picture of the printing stacking surface of the dried ceramic green body sample according to the comparative example 3. DETAILED DESCRIPTION

[0045] To further illustrate the technical means and effects adopted by the present application to achieve the predetermined invention purpose, the following describes the specific implementation, structure, features and effects according to the present application in conjunction with the drawings and preferred embodiments. In the following description, different "an embodiment" or "embodiments" do not necessarily refer to the same embodiment. In addition, the specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0046] In one aspect, the embodiment of the present application provides a cleaning effect evaluation method of photocured 3D printing ceramic body wash, wherein the method comprises the following steps:

[0047] Step 1) A ceramic body sample with at least one set structure is prepared by using photocured 3D printing technology; wherein the set structure includes one or more of through-hole structure, half-through-hole structure, slit structure, protruding structure, stepped structure, and grid structure.

[0048] The step 1) comprises:

[0049] 11) A three-dimensional model with at least one set structure is designed by using a design software, and the three-dimensional model is sliced to export a 3D printing STL file.

[0050] 12) The STL file is imported into a photocured 3D printer, 3D printing parameters are set, and photocured 3D printing ceramic slurry is solidified according to the three-dimensional model to obtain a ceramic body sample with at least one set structure.

[0051] It is to be noted that the three-dimensional model includes one or more of through-hole structure 23, half-through-hole structure 22, slit structure 21, protruding structure (for example, half-cylinder 11), stepped structure 24, and grid structure 25.

[0052] Preferably, the three-dimensional model has a length of 20-25 mm, a width of 20-25 mm, and a height of 4-8 mm, wherein the square through-hole and half-through-hole have a side length of 1-4 mm, the circular through-hole and half-through-hole have a diameter of 1-4 mm, the slit has a width of 0.4-2 mm, the third stepped structure 24 has a short side length of 2-4 mm and a long side length of 5-9 mm, the network structure has an overall size of 8x8x8 mm (in addition, the grid structure includes a "rice" type structure), and the protruding structure includes a half-cylinder, wherein the half-cylinder has a diameter of 0.6-1 mm.

[0053] Step 2) The ceramic body sample is cleaned by using a photocured 3D printing ceramic body wash to obtain a cleaned ceramic body sample.

[0054] In this step, the ceramic body sample is ultrasonically cleaned for 15-30 minutes by using a photocured 3D printing ceramic body wash to obtain a cleaned ceramic body sample.

[0055] Step 3) The cleaned ceramic body sample is dried to obtain a dried ceramic body sample.

[0056] The drying temperature is 120-240°C, and the drying time is 120-240 minutes.

[0057] Step 4) Calculate the surface slurry cleaning amount Q of the cleaning agent on the ceramic green body sample, the surface slurry residual amount C of the dried ceramic green body sample, and detect the printing stacking surface of the dried ceramic green body sample by using a white light interferometer; wherein, according to the surface slurry cleaning amount Q, the surface slurry residual amount C, the macroscopic morphology of the set structure on the dried ceramic green body sample, and the white light interference detection data, the cleaning effect of the photocured 3D printed ceramic green body cleaning agent on the set structure is evaluated.

[0058] In this step: according to the actual mass m1 of the ceramic green body sample before cleaning treatment, the actual mass m2 of the dried ceramic green body sample, the cleaning amount of the cleaning agent on the surface slurry of the ceramic green body is calculated, and the unit is %; wherein, the calculation formula is as follows:

[0059]

[0060] It should be noted that: before cleaning treatment, the ceramic green body sample is weighed by a high-precision electronic balance to obtain the actual mass m1 of the ceramic green body sample before cleaning treatment. After drying treatment, the dried ceramic green body sample is weighed by a high-precision electronic balance to obtain the actual mass m2 of the dried ceramic green body sample. The test accuracy of the balance is 0.0001-0.01g.

[0061] In this step: according to the actual mass m2 of the dried ceramic green body sample, the theoretical mass m of the dried ceramic green body sample, the surface slurry residual amount C of the dried ceramic green body sample is calculated, and the unit is %; wherein, the calculation formula is as follows:

[0062]

[0063] In this step: the detection data of the dried ceramic green body sample detected by using a white light interferometer includes: the surface profile data of the dried ceramic green body sample; wherein, the surface profile data includes the arithmetic mean deviation Sa, the root mean square deviation Sq of the profile, and the maximum height Sz of the profile; wherein, the specific calculation formula is as follows:

[0064]

[0065]

[0066] S Z =Z P +Z V ;

[0067] Wherein, A is the sampling area when the dried ceramic green body sample is tested by a white light interferometer; Z(x, y) is the vertical coordinate value of the sampling point in a sampling area; Z PZ is the height of the highest peak in the sampling area V Z is the depth of the deepest valley in the sampling area.

[0068] In this step: the detection data of the detection of the printing stacking surface of the dried ceramic green body sample by the white light interferometer further includes: the surface three-dimensional topography and roughness data of the dried ceramic green body sample; and / or

[0069] When the dried ceramic green body sample is detected by the white light interferometer, the edge length of the detection area is 100-1000 μm.

[0070] In this step: the cleaning effect of the photocured 3D printed ceramic green body cleaning agent on the ceramic green body is preliminarily evaluated according to the surface slurry cleaning amount Q, the surface slurry residual amount C, and the set structure after cleaning; if the preliminary evaluation is qualified, then the printing stacking surface of the dried ceramic green body sample is detected by the white light interferometer; if the detection data of the white light interferometer is qualified, it is considered that the cleaning effect of the photocured 3D printed ceramic green body cleaning agent is qualified; preferably, if the surface slurry cleaning amount Q is greater than 5% and the surface slurry residual amount C is less than 1%, it is considered that the preliminary evaluation is qualified; preferably, if the white light interferometer detection data of the printing stacking surface is Sa=16-20 mm, Sq=20-22 mm, and Sz=180-210 mm, it is considered that the cleaning effect of the photocured 3D printed ceramic green body cleaning agent on the set structure is qualified.

[0071] It should be noted that: (1) Generally, the residual amount of the surface slurry is less than 1%, and the cleaning effect is better. However, there is a certain amount of overexposure area in photocured 3D printing, which causes the actual mass of the ceramic green body to be larger, but the theoretical mass of the green body remains unchanged, which makes the calculated value of the residual amount larger, so the smaller the residual amount is, the better. (2) Generally, the larger the cleaning amount is, the better, but there is a certain peak area, about 5-10%. (3) The residual amount and the cleaning amount have large errors, so they are only suitable for preliminary screening of the cleaning effect of the cleaning agent. The ceramic green body that passes the cleaning should have a good surface three-dimensional topography after white light interference detection. (4) For white light interference detection: the smaller the values of the arithmetic mean deviation Sa, the root mean square deviation Sq of the profile, and the maximum height Sz of the profile, the better the cleaning effect. However, the layered structure unique to additive manufacturing causes the printing stacking surface to be ladder-shaped, which also causes the slurry to be easily left on the printing stacking surface. Therefore, the cleaning effect is mainly determined by the surface quality of the printing stacking surface. Due to the influence of the ladder effect, when the arithmetic mean deviation Sa is about 18 mm, the root mean square deviation Sq of the profile is about 22 mm, and the maximum height Sz of the profile is about 210 mm, it is considered that the cleaning effect is qualified.

[0072] In addition, if the ceramic body has multiple set structures, the cleaning effect of the cleaning agent on different set structures is evaluated to provide a reference for cleaning the ceramic body with one or more set structures.

[0073] In another aspect, the embodiment of the present application provides a cleaning method for a photocured 3D printed ceramic body, wherein the photocured 3D printed ceramic body has one or more set structures; wherein,

[0074] Before cleaning the photocured 3D printed ceramic body, the type of cleaning agent is selected;

[0075] The cleaning effect of different cleaning agents on the set structures on the photocured 3D printed ceramic body is evaluated by using the cleaning effect evaluation method of the photocured 3D printed ceramic body cleaning agent according to any one of the above.

[0076] According to the evaluation results, a qualified cleaning agent is selected to clean the photocured 3D printed ceramic body.

[0077] Here, regarding the above technical solutions of the present application, the following needs to be explained:

[0078] (1) The three-dimensional model and the ceramic body sample prepared according to the present application provide a basis for judging the cleaning effect of the cleaning agent on the set structures (feature structures) such as through holes, half-through holes, slits and half-cylinders of different sizes of the photocured 3D printed ceramic parts. By comparing the cleaning effects of ceramic bodies with different feature structures, the cleaning effect of the cleaning agent on ceramic parts with various complex structures can be predicted.

[0079] For example, the cleaning effect of the cleaning agent on the set structures (feature structures) is judged by comparing the macroscopic morphology of ceramic body samples with the same size but different set structures (feature structures). For example, a square through hole with a side length of 2 mm is more difficult to clean than a circular through hole with a diameter of 2 mm.

[0080] For example, the best cleaning scale of the cleaning agent is judged by comparing the macroscopic morphology of ceramic body samples with the same structure but different sizes. For example, if there is obvious residual slurry in a structure with a size of 0.5 mm, it indicates that the cleaning agent is not suitable for cleaning ceramic bodies with set structures below 0.5 mm.

[0081] (2) The scheme of the present application provides a quantitative basis for testing the cleaning degree of photocured 3D printed ceramic parts with complex structures. By measuring the mass of the ceramic body sample before and after cleaning, the residual amount and the cleaning amount of the slurry on the surface of the ceramic body sample are calculated, which provides a basis for optimizing the cleaning process of ceramic parts with complex structures.

[0082] (3) The scheme of the present application provides a visual basis for testing the cleaning degree of the light-cured 3D-printed ceramic part green body with complex structure. The white light interferometer is used to test the ceramic green body sample after drying to obtain the two-dimensional and three-dimensional surface topography and surface roughness data of different parts. By observing the distribution of the wave peaks and troughs of the surface topography, the cleaning effect of the cleaning agent on the ceramic green body can be directly obtained. By comparing the roughness of the surface topography, an analysis method can be provided for the evaluation of the surface quality of the ceramic green body.

[0083] (4) The scheme of the present application provides a comprehensive basis for testing the cleaning degree of the light-cured 3D-printed ceramic part green body with complex structure. By comparing the quantitative data of the residual amount and the cleaning amount of the ceramic green body sample, analyzing the two-dimensional and three-dimensional surface topography of the ceramic green body sample, and combining the synergistic comparison of the quantitative and visual methods, the cleaning effect can be accurately evaluated, and an effective means is provided for the quality control of the light-cured 3D-printed ceramic part.

[0084] (5) The three-dimensional topography obtained by the white light interferometer is more three-dimensional and intuitive than the scanning electron microscope, and the surface roughness data of the sample can be obtained at the same time. In addition, the white light interference is a non-destructive testing method, which is lower in cost and relatively convenient.

[0085] The present application is further illustrated by the following specific experimental examples:

[0086] Example 1

[0087] The present embodiment provides a cleaning effect evaluation method for the light-cured 3D-printed ceramic green body cleaning agent, which mainly includes the following steps:

[0088] Step 1) A ceramic green body sample with at least one set structure is prepared by using light-cured 3D printing technology; wherein the set structure includes a semi-cylinder (i.e., a convex structure).

[0089] In this step: a three-dimensional model one 1 as shown in Figure 1 is designed by using a design software, wherein the length x width x height of the three-dimensional model one 1 is 20 x 20 x 8 mm, and the diameter of the convex 11 (semi-cylinder) is 0.6 mm. The three-dimensional model is sliced to export a 3D printing STL file; the STL file is imported into a light-cured 3D printer, the 3D printing parameters are set, and the light-cured 3D printing ceramic slurry is cured according to the three-dimensional model to obtain a light-cured 3D-printed ceramic green body sample.

[0090] Step 2) The ceramic green body sample is weighed by an electronic balance with a precision of 0.0001 g to obtain the mass m1 of the ceramic green body sample before cleaning treatment (as shown in Table 1);

[0091] Step 3) A light-cured 3D printing ceramic body wash is selected to ultrasonically clean the ceramic body sample for 15 minutes to obtain a cleaned ceramic body sample;

[0092] Step 4) The cleaned ceramic body sample is dried at a temperature of 120°C for 2 hours to obtain a dried ceramic body sample (see Figure 3 );

[0093] Step 5) The dried ceramic body is weighed using an electronic balance with a precision of 0.0001 g to obtain the mass m2 of the dried ceramic body (as shown in Table 1);

[0094] Step 6) Calculate the surface slurry cleaning amount Q of the ceramic body sample by the cleaning agent, the surface slurry residual amount C of the dried ceramic body sample, and detect the dried ceramic body sample using a white light interferometer; wherein the cleaning effect of the light-cured 3D printing ceramic body wash on the set structure is evaluated according to the calculation data, the macroscopic morphology of the set structure after cleaning, and the detection data.

[0095] Specifically, according to m1, m2, and the theoretical mass m of the dried ceramic body sample, the surface slurry cleaning amount Q of the ceramic body sample by the cleaning agent and the surface slurry residual amount C of the dried ceramic body sample are calculated (as shown in Table 1).

[0096] The dried ceramic body sample is detected by a white light interferometer, and the test area has a side length of 1000 μm. The two-dimensional morphology, three-dimensional morphology, and profile data (see Figure 5 ) and roughness data (as shown in Table 1) of the ceramic body surface are obtained.

[0097] Example 2

[0098] The present embodiment provides a cleaning effect evaluation method for a light-cured 3D printing ceramic body wash, which mainly includes the following steps:

[0099] Step 1) A ceramic body sample with at least one set structure is prepared by light-cured 3D printing technology; wherein the types of set structures include through-hole structures (circular through-holes, square through-holes), half-through-hole structures, slit structures, grid structures, and stepped structures.

[0100] In this step: the design software is used to design the ceramic body sample with at least one set structure as shown in Figure 2The three-dimensional model two 2 is shown in FIG. 2, wherein the length x width x height of the three-dimensional model two 2 is 25x25x10mm; the three-dimensional model two 2 is provided with a through-hole structure 23, a half-through-hole structure 22, a slit structure 21, a stepped structure 24, and a network structure 25; wherein the edge length of the square through-hole is 1mm, 2mm, 3mm and 4mm respectively, the edge length of the square half-through-hole is 1mm, 2mm, 3mm and 4mm respectively, the diameter of the circular through-hole is 1mm, 2mm, 3mm and 4mm respectively, the diameter of the circular half-through-hole is 1mm, 2mm, 3mm and 4mm respectively, the width of the slit is 0.4mm, 0.8mm, 1.0mm, 1.5mm and 2.0mm respectively, the three-level stepped structure with a short side length of 2-4mm and a long side length of 5-9mm, and the overall size of the network structure is 8x8x8mm. The three-dimensional model is sliced and processed to export a 3D printing STL file; the STL file is imported into a light-curing 3D printer, 3D printing parameters are set, and a light-curing 3D printing ceramic slurry is solidified according to the three-dimensional model to obtain a light-curing 3D printing ceramic body sample.

[0101] Step 2) The ceramic body sample is weighed using an electronic balance with a precision of 0.0001g to obtain the mass m1 of the ceramic body sample before cleaning treatment (as shown in Table 1);

[0102] Step 3) A light-curing 3D printing ceramic body cleaning agent is selected to ultrasonically clean the ceramic body sample for 15 minutes to obtain a ceramic body sample after cleaning treatment;

[0103] Step 4) The ceramic body sample after cleaning treatment is dried at a temperature of 180℃ for 2 hours to obtain a dried ceramic body sample (see FIG. 2); Figure 4

[0104] Step 5) The dried ceramic body is weighed using an electronic balance with a precision of 0.0001g to obtain the mass m2 of the dried ceramic body (as shown in Table 1);

[0105] Step 6) The surface slurry cleaning amount Q of the ceramic body sample by the cleaning agent, the surface slurry residual amount C of the dried ceramic body sample, and the detection of the dried ceramic body sample by a white light interferometer are calculated; wherein the cleaning effect of the light-curing 3D printing ceramic body cleaning agent on the set structure is evaluated according to the calculation data, the macroscopic morphology of the structure after cleaning, and the detection data.

[0106] Specifically, the surface slurry cleaning amount Q of the ceramic body sample by the cleaning agent and the surface slurry residual amount C of the dried ceramic body sample are calculated according to m1, m2 and the theoretical mass m of the dried ceramic body sample (as shown in Table 1).

[0107] ​The dry ceramic body sample is detected by a white light interferometer, the test area has a side length of 500 μm, and the roughness and other data of the ceramic body surface are obtained (as shown in Table 1).

[0108] Comparative Example 1

[0109] Comparative Example 1 provides a cleaning effect evaluation method of a photocured 3D printed ceramic body cleaning agent, which is different from Example 1 in that the designed three-dimensional model is a cube without a set structure. It mainly includes the following steps:

[0110] Step 1) A ceramic body sample with no set structure (special structure) is prepared by using a photocured 3D printing technology.

[0111] In this step: a three-dimensional model is designed by a design software, wherein the three-dimensional model is a cube with a length x width x height of 20 x 20 x 8 mm. The three-dimensional model is subjected to slicing processing, and a 3D printing STL file is exported; the STL file is imported into a photocured 3D printer, 3D printing parameters are set, and a photocured 3D printing ceramic slurry is cured according to the three-dimensional model to obtain a photocured 3D printing ceramic body sample.

[0112] Step 2) The ceramic body sample is weighed by an electronic balance with a precision of 0.0001 g to obtain the mass m1 of the ceramic body sample before cleaning treatment (as shown in Table 1);

[0113] Step 3) A photocured 3D printing ceramic body cleaning agent is selected, and the ceramic body sample is subjected to ultrasonic cleaning for 15 minutes to obtain a ceramic body sample after cleaning treatment;

[0114] Step 4) The ceramic body sample after cleaning treatment is dried at a temperature of 120°C for 2 hours to obtain a dry ceramic body sample;

[0115] Step 5) The dry ceramic body is weighed by an electronic balance with a precision of 0.0001 g to obtain the mass m2 of the dry ceramic body (as shown in Table 1);

[0116] Step 6) The cleaning amount Q of the surface slurry of the ceramic body sample by the cleaning agent, the residual amount C of the surface slurry of the dry ceramic body sample, and the detection of the dry ceramic body sample by a white light interferometer are calculated; wherein the cleaning effect of the photocured 3D printing ceramic body cleaning agent on the set structure is evaluated according to the calculation data and the detection data.

[0117] Specifically, the cleaning amount Q of the surface slurry of the ceramic body sample by the cleaning agent, the residual amount C of the surface slurry of the dry ceramic body sample are calculated according to m1, m2 and the theoretical mass m of the dry ceramic body sample (as shown in Table 1).

[0118] The dried ceramic body sample is detected by a white light interferometer, the test area side length is 1000 pm, and the two-dimensional morphology, three-dimensional morphology and profile data, roughness and other data of the ceramic body surface are obtained (as shown in Table 1).

[0119] Comparative Example 2

[0120] Comparative Example 2 provides a cleaning effect evaluation method of a photocured 3D printed ceramic body cleaning agent, which is different from Example 1 in that the two-dimensional and three-dimensional morphologies of the ceramic body sample surface are not measured by a white light interferometer. Mainly includes the following steps:

[0121] Mainly includes the following steps:

[0122] Step 1) A ceramic body sample with at least one set structure is prepared by using a photocured 3D printing technology; wherein the set structure includes a semi-cylinder (i.e. a convex structure).

[0123] In this step: a three-dimensional model one 1 is designed by a design software as shown in Figure 1 The three-dimensional model is sliced and a 3D printing STL file is exported; the STL file is imported into a photocured 3D printer, 3D printing parameters are set, and photocured 3D printing ceramic slurry is solidified according to the three-dimensional model to obtain a photocured 3D printing ceramic body sample.

[0124] Step 2) The ceramic body sample is weighed by an electronic balance with a precision of 0.0001 g to obtain the mass m1 of the ceramic body sample before cleaning treatment (as shown in Table 1);

[0125] Step 3) A photocured 3D printing ceramic body cleaning agent is selected, and the ceramic body sample is ultrasonically cleaned for 15 minutes to obtain a ceramic body sample after cleaning treatment;

[0126] Step 4) The ceramic body sample after cleaning treatment is dried at a temperature of 120°C for 2 hours to obtain a dried ceramic body sample;

[0127] Step 5) The dried ceramic body is weighed by an electronic balance with a precision of 0.0001 g to obtain the mass m2 of the dried ceramic body (as shown in Table 1);

[0128] Step 6) The surface slurry cleaning amount Q of the ceramic body sample and the surface slurry residue amount C of the dried ceramic body sample are calculated. According to the calculation data and detection data, the cleaning effect of the photocured 3D printing ceramic body cleaning agent on the set structure is evaluated.

[0129] Specifically, according to the calculation of m1, m2 and the theoretical mass m of the dried ceramic green body sample, the surface slurry cleaning amount Q of the ceramic green body sample by the cleaning agent and the surface slurry residual amount C of the dried ceramic green body sample are obtained (as shown in Table 1).

[0130] Comparative Example 3

[0131] Comparative Example 3 provides a cleaning effect evaluation method of a photocuring 3D printing ceramic green body cleaning agent, which is different from Example 1 in that the two-dimensional and three-dimensional topographies of the ceramic green body sample surface are not measured by white light interferometry, but a scanning electron microscope is used to observe the three-dimensional topography. It mainly includes the following steps:

[0132] It mainly includes the following steps:

[0133] Step 1) A ceramic green body sample with at least one set structure is prepared by using a photocuring 3D printing technology; wherein the set structure includes a semi-cylinder (i.e. a convex structure).

[0134] In this step: a three-dimensional model one 1 as shown in Figure 1 is designed by a design software, wherein the length x width x height of the three-dimensional model one 1 is 20 x 20 x 8 mm, and the diameter of the semi-cylinder 11 is 0.6 mm. The three-dimensional model is sliced to export a 3D printing STL file; the STL file is imported into a photocuring 3D printer, the 3D printing parameters are set, and the photocuring 3D printing ceramic slurry is cured according to the three-dimensional model to obtain a photocuring 3D printing ceramic green body sample.

[0135] Step 2) The ceramic green body sample is weighed by an electronic balance with a precision of 0.0001 g to obtain the mass m1 of the ceramic green body sample before cleaning treatment (as shown in Table 1);

[0136] Step 3) A photocuring 3D printing ceramic green body cleaning agent is selected to ultrasonically clean the ceramic green body sample for 15 minutes to obtain a cleaned ceramic green body sample;

[0137] Step 4) The cleaned ceramic green body sample is dried at a temperature of 120°C for 2 hours to obtain a dried ceramic green body sample;

[0138] Step 5) The dried ceramic green body is weighed by an electronic balance with a precision of 0.0001 g to obtain the mass m2 of the dried ceramic green body (as shown in Table 1);

[0139] Step 6) Calculate the surface slurry cleaning amount Q of the ceramic green body sample by the cleaning agent, the surface slurry residual amount C of the dried ceramic green body sample, and detect the dried ceramic green body sample by a scanning electron microscope; wherein the cleaning effect of the photocuring 3D printing ceramic green body cleaning agent on the set structure is evaluated according to the calculation data and the detection data.

[0140] Specifically, according to the calculation of m1, m2 and the theoretical mass m of the dried ceramic green body sample, the surface slurry cleaning amount Q of the ceramic green body sample by the cleaning agent and the surface slurry residual amount C of the dried ceramic green body sample are obtained (as shown in Table 1).

[0141] The residual amount, cleaning amount, surface roughness and other indicators of the surface residual slurry of the ceramic green body in the above-mentioned embodiment 1 and embodiment 2, comparative example 1, comparative example 2 and comparative example 3 are tested, and the test data is shown in Table 1.

[0142] Table 1

[0143]

[0144] From the above-mentioned examples, the schemes of comparative examples, the drawings and the data of Table 1, it can be seen that:

[0145] (1) Figure 1 The first three-dimensional model is a three-dimensional model with a set structure (feature structure) designed in embodiment 1, and the three-dimensional model has protrusions (half cylinders) with a diameter of 0.6mm in different directions, so that the cleaning effect of the selected cleaning agent on the ceramic green body with cylindrical structure can be judged.

[0146] Figure 3 It is a physical picture of the ceramic green body sample after cleaning and drying in embodiment 1.

[0147] Figure 5 It is a two-dimensional and three-dimensional profile picture of the printing stacking surface of the dried ceramic green body sample obtained in embodiment 1. It can be seen that after cleaning by the selected cleaning agent, the ceramic green body printing stacking surface has less ceramic slurry residue, and the distribution of peaks and valleys of the surface topography is uniform, and the lamellar structure characteristic of 3D printing is obvious, and the cleaning effect is better.

[0148] (2) Figure 2 The second three-dimensional model is a three-dimensional model with a set structure (feature structure) designed in embodiment 2.

[0149] Figure 4For the real object figure of the cleaned and dried ceramic green body sample in Example 2, it can be seen that the square through holes and the circular through holes with the side length and diameter of 2 mm, 3 mm and 4 mm, the square half through holes and the circular half through holes with the side length and diameter of 3 mm and 4 mm, the slits with the width of 0.8 mm, 1.0 mm, 1.5 mm and 2.0 mm, the ladder with the cross section of 2 mm x 2 mm and the width of 9 mm, and the network structure with the overall size of 8 x 8 x 8 mm are all clearly visible, and there is no obvious slurry residue; however, the square through holes and the circular through holes with the side length and diameter of 1 mm and the slits with the width of 0.4 mm have obvious slurry residue. Therefore, it is illustrated that the selected cleaning agent has poor cleaning effect on the structure with the size less than 1 mm.

[0150] It can be seen that the test model (i.e. three-dimensional model) and method designed by the present application simulate the cleaning effect of the cleaning agent on the ceramic parts with different size structures and feature shapes, and provide preferred basis for the cleaning process of the photocured 3D printed ceramic parts with complex structure.

[0151] (3) Although the test method for the cleaning degree of the ceramic green body in Comparative Example 1 is the same as that in Example 1, the three-dimensional model of Comparative Example 1 does not have complex setting structure (special structure), and therefore Comparative Example 1 cannot represent the cleaning effect of the cleaning agent on the high solid content residual slurry on the surface of the ceramic green body with complex structure.

[0152] (4) Although the three-dimensional model of the ceramic part green body in Comparative Example 2 is the same as that in Example 1, the test method for the cleaning degree of the ceramic part green body in Comparative Example 2 does not use white light interference, and therefore cannot test the roughness and two-dimensional and three-dimensional morphology of the surface of the ceramic part green body, and cannot comprehensively evaluate the cleaning effect of the cleaning agent.

[0153] (5) Table 1 is the data of the residual amount, cleaning amount and surface roughness of the residual slurry on the surface of the ceramic green body. Because the model of Example 2 is more complex than the models of Example 1, Comparative Example 1, Comparative Example 2 and Comparative Example 3, the residual amount of the slurry on the surface of the ceramic green body is larger and the cleaning amount of the cleaning agent is smaller, which illustrates that the complex structure increases the cleaning difficulty of the ceramic green body. Since the same cleaning agent is used in all the examples and comparative examples of the present application, and in addition, the test parts of the white light interference are all the printing stacking surfaces, the data of the surface roughness is not much different and the cleaning effect is all qualified.

[0154] (6) Figure 6 is the scanning electron microscope picture of the printing stacking surface of the dried ceramic green body sample obtained in Comparative Example 3. It can be seen that although the layered structure formed by 3D printing can be seen, the electron microscope picture is not very intuitive due to the poor conductivity of the ceramic sample, and it is difficult to accurately evaluate the morphology. However, the white light interference used in Example 1 can not only obtain the three-dimensional morphology of the sample, but also obtain the roughness data thereof.

[0155] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application still falls within the scope of the technical solutions of the present application.

Claims

1. A method for evaluating the cleaning effect of a photocured 3D-printed ceramic body wash, characterized in that, It comprises the following steps: Step 1) using light-cured 3D printing technology to prepare a ceramic green body sample with at least one set structure; wherein the set structure includes one or more of through-hole structure, half-through-hole structure, slit structure, protrusion structure, step structure, grid structure; Step 2) washing the ceramic green body sample with a light-cured 3D printing ceramic green body cleaning agent to obtain a cleaned ceramic green body sample; Step 3) drying the cleaned ceramic green body sample to obtain a dried ceramic green body sample; Step 4) calculating the surface slurry cleaning amount Q of the cleaning agent on the ceramic green body sample, the surface slurry residual amount C of the dried ceramic green body sample, and detecting the printing stacking surface of the dried ceramic green body sample using a white light interferometer; wherein the cleaning effect of the light-cured 3D printing ceramic green body cleaning agent on the set structure is evaluated according to the surface slurry cleaning amount Q, the surface slurry residual amount C, the macroscopic morphology of the set structure on the dried ceramic green body sample, and the white light interference detection data; Wherein the detection data of detecting the printing stacking surface of the dried ceramic green body sample using a white light interferometer includes: the surface profile data of the dried ceramic green body sample; wherein the surface profile data includes arithmetic mean deviation Sa, root mean square deviation Sq of the profile and maximum height Sz of the profile; wherein the units of Sa, Sq and Sz are mm, and the specific calculation formula is as follows: ； ； ； Wherein, A is the sampling area when the dried ceramic body sample is tested by the white light interferometer; Z(x, y) is the longitudinal coordinate value of the sampling point in a sampling area; Z P is the height of the highest wave peak in the sampling area, Z V is the depth of the deepest wave trough in the sampling area; Wherein, according to the surface slurry cleaning amount Q, the surface slurry residual amount C, and the macroscopic morphology of the set structure on the dried ceramic green body sample, the cleaning effect of the light-cured 3D printing ceramic green body cleaning agent on the ceramic green body is preliminarily evaluated; If the preliminary evaluation is qualified, then the printing stacking surface of the dried ceramic green body sample is detected using a white light interferometer; if the detection data of the white light interferometer is qualified, it is considered that the cleaning effect of the light-cured 3D printing ceramic green body cleaning agent is qualified; If the surface slurry cleaning amount Q is greater than 5% and the surface slurry residual amount C is less than 1%, it is considered that the preliminary evaluation is qualified; If the white light interferometer detection data of the printing stacking surface is Sa=16-20mm, Sq=20-22mm, and Sz=180-210mm, it is considered that the cleaning effect of the light-cured 3D printing ceramic green body cleaning agent on the set structure is qualified.

2. The method for evaluating the cleaning effect of the photocurable 3D-printed ceramic body washout agent according to claim 1, characterized in that, The step 1) comprises: 11) designing a three-dimensional model with at least one set structure using design software, slicing the three-dimensional model, and exporting a 3D printing STL file; 12) importing the STL file into a light-cured 3D printer, setting 3D printing parameters, and curing the light-cured 3D printing ceramic slurry according to the three-dimensional model to obtain a ceramic green body sample with at least one set structure.

3. The cleaning effect evaluation method of the light-cured 3D printing ceramic green body cleaning agent according to claim 2, characterized in that: The length of the three-dimensional model is 20-25mm, the width is 20-25mm, and the height is 4-8mm.

4. The method for evaluating the cleaning effect of the photocuring 3D printing ceramic body washout agent according to claim 1, characterized in that, The through-hole structure includes square through-hole structure and / or circular through-hole structure.

5. The method for evaluating the cleaning effect of the photocurable 3D-printed ceramic body washout agent according to claim 4, characterized in that, The square through-hole structure has a side length of 1-4 mm.

6. The method for evaluating the cleaning effect of the photocuring 3D printing ceramic body washout agent according to claim 4, characterized in that, The circular through-hole structure has a diameter of 1-4 mm.

7. The method for evaluating the cleaning effect of the photocuring 3D printing ceramic body washout agent according to claim 1, characterized in that, The semi-through-hole structure has a diameter of 1-4 mm.

8. The method for evaluating the cleaning effect of the photocuring 3D printing ceramic body washout agent according to claim 1, characterized in that, The slit structure has a width of 0.4-2 mm.

9. The method for evaluating the cleaning effect of the photocuring 3D printing ceramic body washout agent according to claim 1, characterized in that, The grid structure comprises a cross-shaped structure.

10. The method for evaluating the cleaning effect of the photocuring 3D printing ceramic body washout agent according to claim 1, characterized in that, The convex structure comprises a semi-cylinder.

11. The method for evaluating the cleaning effect of the photocurable 3D printing ceramic body washout agent according to claim 10, characterized in that, The semi-cylinder has a diameter of 0.6-1 mm.

12. The method for evaluating the cleaning effect of the photocuring 3D printing ceramic body washout agent according to claim 1, characterized in that, In the step 2), the ceramic body sample is cleaned by using the photocuring 3D printing ceramic body cleaning agent for 15-30 minutes through ultrasonic cleaning to obtain a cleaned ceramic body sample. In the step 3), the cleaned ceramic body sample is dried at a temperature of 120-240 DEG C for 120-240 minutes.

13. The method for evaluating the cleaning effect of the photocuring 3D printing ceramic body washout agent according to claim 1, characterized in that, In the step 4), the photocuring 3D printing ceramic body cleaning agent is evaluated according to the following method. According to the actual mass m1 of the ceramic body sample before cleaning, the actual mass m2 of the dried ceramic body sample, the cleaning amount of the cleaning agent on the surface slurry of the ceramic body sample is calculated, and the unit is %; wherein the calculation formula is as follows:

14. The method for evaluating the cleaning effect of the photocuring 3D printing ceramic body washout agent according to claim 1, characterized in that, In the step 4), the photocuring 3D printing ceramic body cleaning agent is evaluated according to the following method. According to the actual mass m2 of the dried ceramic body sample, the theoretical mass m of the dried ceramic body sample, the surface slurry residue C of the dried ceramic body sample is calculated, and the unit is %; wherein the calculation formula is as follows: 。 15. The method for evaluating the cleaning effect of the photocuring 3D printing ceramic body washout agent according to claim 1, characterized in that, The detection data of the dried ceramic body sample detected by the white light interferometer further comprises: the surface three-dimensional morphology and roughness data of the dried ceramic body sample; and / or When the dried ceramic body sample is detected by the white light interferometer, the side length of the detection area is 100-1000 μm. 。 16. The method for evaluating the cleaning effect of the photocuring 3D printing ceramic body washout agent according to claim 1, characterized in that, 17. The photocuring 3D printing ceramic body cleaning agent cleaning effect evaluation method of claim 1, wherein, If the ceramic body has a plurality of set structures, the cleaning effect of the cleaning agent on different set structures is evaluated to provide a reference basis for cleaning the ceramic body with one or more set structures. The photocuring 3D printing ceramic body has one or more set structures; wherein, Before cleaning the photocuring 3D printing ceramic body, the type of cleaning agent is selected; 18. A method of cleaning a photocured 3D printed ceramic green body, characterized in that, The photocuring 3D printing ceramic body cleaning agent cleaning effect evaluation method of any one of claims 1-17 is used to evaluate the cleaning effect of different cleaning agents on the set structure on the photocuring 3D printing ceramic body; According to the evaluation results, a qualified cleaning agent is selected to clean the photocuring 3D printing ceramic body. ​ ​

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