3D printing configuration wax and its preparation method and application

Abstract

The present invention provides a 3D printing configuration wax and a preparation method and application thereof, and specifically relates to the technical field of 3D printing materials. The 3D printing configuration wax includes plant wax, paraffin wax, branched ester wax and tackifying resin. The 3D printing configuration wax provided by the present invention, by combining the hardness of plant wax, and the synergistic effect of paraffin wax and branched ester wax, the configuration wax has been significantly improved in mechanical properties, the strength and toughness of the model are enhanced, and the risk of breakage during printing or post-processing is effectively reduced. The low melting point characteristics of paraffin wax optimize the fluidity and cooling molding during the printing process, improve the printing stability, ensure the smoothness of the wax material in the print head and the solidification molding on the printing platform, and reduce the possibility of interlayer sliding and deformation. In addition, the addition of tackifying resin enhances the bonding force between each printing layer, and improves the mechanical properties and overall stability of the model.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing materials, and in particular to a 3D printing configuration wax and a preparation method and application thereof. Background Art

[0002] MJP 3D printing technology, or multi-nozzle printing technology, has been widely used in the jewelry and dental fields due to its high precision and detail expression capabilities. This technology can meet the needs of personalized customization, especially when making fine and complex jewelry and dental models, and can provide high-resolution printing effects with layer thickness as low as 16 microns.

[0003] In MJP 3D printing technology, the role of structural molding wax is to achieve complex geometric shapes and reproduce fine details during the printing process. This wax material can accurately replicate the complex structures in the design, including subtle textures and contours, during the printing process, while maintaining sufficient strength and toughness to support the layered structure during the printing process. Due to the low melting point and ash content of structural molding wax, it can be easily removed in the post-processing stage without leaving any residue, ensuring the accuracy of the final product. In addition, the use of structural molding wax also simplifies the post-processing process and improves production efficiency, making MJP technology widely used in jewelry, dentistry and other fields that require fine and complex structures.

[0004] In order to improve the mechanical strength and toughness of the printed wax model and prevent it from being easily broken, the prior art adds toughening agents to the structural molding wax. The application of toughening agents is to enhance the toughness of the wax model, which is particularly important for wax models in 3D printing because they need to withstand various mechanical stresses during the printing process and subsequent post-processing. These toughening agents usually have a high molecular weight, but the amount added is limited to avoid affecting other properties of the wax model, such as melting point, fluidity and surface quality. At the same time, a high ash content of the toughening agent may affect the surface quality of the final product, because the ash content may affect the physical properties of the wax model during high-temperature treatment and even cause defects in the finished product.

[0005] In view of this, the present invention is proposed. Summary of the invention

[0006] One of the purposes of the present invention is to provide a 3D printing configuration wax, aiming to solve at least one of the above-mentioned technical problems in the prior art.

[0007] A second object of the present invention is to provide a method for preparing 3D printing configuration wax.

[0008] A third object of the present invention is to provide an application of 3D printing configuration wax.

[0009] In order to solve the above technical problems, the present invention particularly adopts the following technical solutions:

[0010] A first aspect of the present invention provides a 3D printing configuration wax, comprising, by weight, 20 to 40 parts of plant wax, 25 to 30 parts of paraffin wax, 5 to 20 parts of branched ester wax, and 15 to 30 parts of tackifying resin.

[0011] The branched ester wax has a melting point of 50-90° C., a branch number of ≥1, and a carbon atom number of ≥12.

[0012] Furthermore, the 3D printing configuration wax also includes color powder and antioxidant.

[0013] Preferably, the weight percentage of the toner is 0-0.02 parts.

[0014] Preferably, the weight portion of the antioxidant is 0-0.05 parts.

[0015] Furthermore, the plant wax includes at least one of carnauba wax, candelilla wax, rice bran wax, sugarcane wax, laurel wax, castor bean wax, lacquer wax and carnauba wax; preferably at least one of candelilla wax, rice bran wax and sunflower wax.

[0016] Preferably, the paraffin wax includes at least one of 52# paraffin wax, 54# paraffin wax and 70# microcrystalline wax.

[0017] Furthermore, the branched ester wax includes at least one of pentaerythritol stearate, glyceryl tristearate, hydrogenated castor wax and synthetic polyester wax.

[0018] Preferably, the brands of the synthetic polyester wax include Euroceras 691 and / or Euroceras 694.

[0019] Furthermore, the softening point of the tackifying resin is 70-140°C.

[0020] Preferably, the tackifying resin comprises C5 hydrogenated petroleum resin.

[0021] Furthermore, the toner is oil-soluble toner.

[0022] Preferably, the antioxidant includes at least one of a hindered phenol antioxidant, a hindered amine antioxidant, a sulfate antioxidant and a phosphite antioxidant.

[0023] The second aspect of the present invention provides a method for preparing the 3D printing configuration wax, which comprises mixing vegetable wax, paraffin wax, branched ester wax and an optional antioxidant, and melting them; adding a tackifying resin after melting and mixing them evenly, adding an optional color powder and dispersing them evenly, and finally filtering and cooling to obtain the 3D printing configuration wax.

[0024] Furthermore, the melting temperature is 90-110°C.

[0025] Preferably, the stirring rate after adding the tackifying resin is 400-600 rpm.

[0026] Preferably, the stirring speed after adding the toner is 800-1200 rpm.

[0027] A third aspect of the present invention provides the use of the 3D printing configuration wax in precision casting, medical devices, artwork reproduction or jewelry design.

[0028] Compared with the prior art, the present invention has at least the following beneficial effects:

[0029] The 3D printing configuration wax provided by the present invention has been significantly improved in mechanical properties by combining the hardness of plant wax, and the synergistic effect of paraffin wax and branched ester wax, and the strength and toughness of the model are enhanced, and the risk of breakage during printing or post-processing is effectively reduced. The low melting point characteristics of paraffin wax optimize the fluidity and cooling molding during printing, improve printing stability, ensure the smoothness of the wax material in the print head and the rapid solidification on the printing platform, and reduce the possibility of interlayer sliding and deformation. In addition, the addition of tackifying resin enhances the bonding force between each printing layer, improves the mechanical properties and overall stability of the model. At the same time, the formula design of the configuration wax takes into account the precision requirements during printing, and achieves high-precision printing effects by accurately controlling the fluidity and solidification speed of the wax material, meeting the printing requirements of complex and fine structures. In the lost wax casting process, the ash content produced by the configuration wax is low, which means that when casting metal, the wax mold burns cleanly, reduces the risk of casting defects, and improves the purity and quality of the final metal product. The 3D printing configuration wax has achieved comprehensive improvements in mechanical properties, printing stability, interlayer adhesion, printing accuracy, lost wax casting quality and application adaptability.

[0030] The preparation method of 3D printing configuration wax provided by the present invention first mixes and melts vegetable wax, paraffin wax, branched ester wax and antioxidant, thereby ensuring the consistency of chemical and physical properties, and improving the thermal stability of the wax material during high-temperature printing, thereby preventing oxidation and degradation of the material. Next, the melted wax material is evenly mixed with a tackifying resin, thereby enhancing the fluidity and interlayer adhesion of the wax material, which is crucial for improving the printing quality. The filtering step ensures the purity of the wax material, avoids blockages and defects during the printing process, and improves the printing accuracy and finished product quality. Finally, cooling is performed to facilitate the transportation of the final product.

[0031] The application provided by the present invention, in view of the excellent comprehensive performance of 3D printing configuration wax, brings a new type of efficient, reliable and versatile material to the 3D printing field. It is suitable for a variety of 3D printing technologies and application scenarios, can meet the high requirements for fineness and complexity, improves the product quality of precision casting, medical devices, artwork reproduction or jewelry design, and promotes the development of downstream industries. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown herein can be arranged and designed in various different configurations.

[0033] A first aspect of the present invention provides a 3D printing configuration wax, comprising, by weight, 20 to 40 parts of plant wax, 25 to 30 parts of paraffin wax, 5 to 20 parts of branched ester wax, and 15 to 30 parts of tackifying resin.

[0034] The branched ester wax has a melting point of 50-90° C., a branch number of ≥1, and a carbon atom number of ≥12.

[0035] The 3D printing configuration wax provided by the present invention has been significantly improved in mechanical properties by combining the hardness of plant wax, and the synergistic effect of paraffin wax and branched ester wax, and the strength and toughness of the model are enhanced, and the risk of breakage during printing or post-processing is effectively reduced. The low melting point characteristics of paraffin wax optimize the fluidity and cooling molding during printing, improve printing stability, ensure the smoothness of the wax material in the print head and the solidification molding on the printing platform, and reduce the possibility of interlayer sliding and deformation. In addition, the addition of tackifying resin enhances the bonding force between each printing layer, improves the mechanical properties and overall stability of the model. At the same time, the formula design of the configuration wax takes into account the precision requirements during printing, and achieves high-precision printing effects by accurately controlling the fluidity and solidification speed of the wax material, meeting the printing requirements of complex and fine structures. In the lost wax casting process, the ash content produced by the configuration wax is low, which means that when casting metal, the wax mold burns cleanly, reduces the risk of casting defects, and improves the purity and quality of the final metal product. The 3D printing configuration wax has achieved comprehensive improvements in mechanical properties, printing stability, interlayer adhesion, printing accuracy, lost wax casting quality and application adaptability.

[0036] Typically but not restrictively, in the 3D printing configuration wax, the number of vegetable wax parts can be, for example, 20 parts, 25 parts, 30 parts, 35 parts or 40 parts, or any value within the range of 20 to 40 parts; the number of paraffin wax parts can be, for example, 25 parts, 26 parts, 27 parts, 28 parts or 30 parts, or any value within the range of 25 to 30 parts; the number of branched ester wax parts can be, for example, 5 parts, 10 parts, 15 parts or 20 parts, or any value within the range of 5 to 20 parts; the number of tackifying resin parts can be, for example, 15 parts, 20 parts, 25 parts or 30 parts, or any value within the range of 15 to 30 parts.

[0037] Furthermore, the 3D printing configuration wax also includes toner and antioxidant. The toner is used to color the 3D printing configuration wax and distinguish the types of printing wax materials. The antioxidant can reduce the aging and yellowing of the 3D printing configuration wax during the printing process.

[0038] Preferably, the weight percentage of the toner is 0-0.02 parts.

[0039] Preferably, the weight portion of the antioxidant is 0-0.05 parts.

[0040] Typically but not limiting, the weight portion of the toner can be 0, 0.005, 0.01 or 0.015, or any value in the range of 0 to 0.02. Similarly, preferably, the weight portion of the antioxidant can be 0, 0.01, 0.02, 0.03 or 0.04, or any value in the range of 0 to 0.05.

[0041] It should be noted that the weight percentages of the toner and the antioxidant can both be 0, which means that no toner or antioxidant is added to the 3D printing configuration wax.

[0042] Further, the plant wax includes at least one of carnauba wax, candelilla wax, rice bran wax, sugarcane wax, laurel wax, castor bean wax, lacquer wax and carnauba wax; preferably at least one of candelilla wax, rice bran wax and sunflower wax. Plant wax is selected as the base material of 3D printing configuration wax because these plant waxes are derived from nature, are renewable resources, more environmentally friendly, biodegradable, have little impact on the environment, and their high hardness can improve product performance and enhance market competitiveness.

[0043] Preferably, the paraffin wax includes at least one of 52# paraffin wax, 54# paraffin wax and 70# microcrystalline wax. The low melting point characteristics of these paraffin waxes can balance the kinematic viscosity and hardness of the wax, ensuring appropriate fluidity and cooling and solidification capabilities during the printing process, thereby improving the interlayer adhesion of the model. This balance is crucial for building complex structure models because it helps reduce interlayer peeling, enhances the overall strength of the printed part, and improves the printing quality, which is critical for making fine casting molds and models.

[0044] Furthermore, the branched ester wax includes at least one of pentaerythritol stearate, glyceryl tristearate, hydrogenated castor wax and synthetic polyester wax. These branched ester waxes have multiple branches and can interact with other raw materials to significantly improve the mechanical properties of the material, enhance the strength and toughness, and control the fluidity and cooling and solidification speed of the material.

[0045] Preferably, the brands of the synthetic polyester wax include Euroceras 691 and / or Euroceras 694.

[0046] Furthermore, the softening point of the tackifying resin is 70-140°C. The softening point of the tackifying resin is set between 70-140°C to ensure that the configuration wax has appropriate fluidity and kinematic viscosity while improving cohesion and bonding performance, and to ensure the spraying stability of the wax material. This softening point range helps to improve the compatibility and interlayer peeling strength of the tackifying resin, and after hydrogenation treatment, provides good thermal stability and color stability.

[0047] Preferably, the tackifying resin comprises C5 hydrogenated petroleum resin.

[0048] Furthermore, the toner is oil-soluble toner.

[0049] Preferably, the antioxidant includes at least one of a hindered phenol antioxidant, a hindered amine antioxidant, a sulfate antioxidant and a phosphite antioxidant.

[0050] The second aspect of the present invention provides a method for preparing the 3D printing configuration wax, which comprises mixing vegetable wax, paraffin wax, branched ester wax and an optional antioxidant, and melting them; adding a tackifying resin after melting and mixing them evenly, adding an optional color powder and dispersing them evenly, and finally filtering and cooling to obtain the 3D printing configuration wax.

[0051] The preparation method of 3D printing configuration wax provided by the present invention first mixes and melts vegetable wax, paraffin wax, branched ester wax and antioxidant, thereby ensuring the consistency of chemical and physical properties, and improving the thermal stability of the wax material during high-temperature printing, thereby preventing oxidation and degradation of the material. Then, the melted wax material is evenly mixed with a tackifying resin, thereby enhancing the fluidity and interlayer adhesion of the wax material, which is crucial for improving the printing quality and durability of the finished product. The filtering step ensures the purity of the wax material, avoids blockages and defects during the printing process, and improves the printing accuracy and finished product quality. Finally, the cooling process ensures that the wax material forms a uniform crystal structure during the curing process, which is convenient for the use and transportation of the final product.

[0052] Further, the melting temperature is 90-110° C. Typically but not limiting, the melting temperature may be 90° C., 95° C., 100° C. or 110° C., or any value within the range of 90-110° C.

[0053] Preferably, the stirring rate after adding the tackifying resin is 400-600 rpm. Typically but not limiting, the stirring rate after adding the tackifying resin can be 400 rpm, 450 rpm, 500 rpm, 550 rpm or 600 rpm, or any value within the range of 400-600 rpm.

[0054] Preferably, the stirring speed after adding the toner is 800-1200 rpm. Typically but not limiting, the stirring speed after adding the toner can be 800 rpm, 900 rpm, 1000 rpm, 1100 rpm or 1200 rpm, or any value within the range of 800-1200 rpm.

[0055] A third aspect of the present invention provides the use of the 3D printing configuration wax in precision casting, medical devices, artwork reproduction or jewelry design.

[0056] The application provided by the present invention, in view of the excellent comprehensive performance of 3D printing configuration wax, brings a new type of efficient, reliable and versatile material to the 3D printing field. It is suitable for a variety of 3D printing technologies and application scenarios, can meet the high requirements for fineness and complexity, improves the product quality of precision casting, medical devices, artwork reproduction or jewelry design, and promotes the development of downstream industries.

[0057] In the following, some embodiments of the present invention are described in detail in conjunction with the embodiments. In the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. The raw materials used in the present invention can be obtained by commercial purchase unless otherwise specified.

[0058] Example 1

[0059] The present embodiment provides a 3D printing configuration wax, and the preparation process is as follows: 20 parts of pentaerythritol stearate PETS, 25 parts of refined candelilla wax, 30 parts of 70# microcrystalline wax, and 0.05 parts of antioxidant are heated to 100°C. After the raw materials are melted, 25 parts of C5 hydrogenated petroleum resin are added under stirring at a stirring rate of 500 rpm until the resin is completely dissolved, 0.01 parts of toner are added, and stirring is continued for 1 hour at a stirring rate of 1000 rpm. The dispersed wax material is filtered through a filter membrane with a pore size of 1 μm, and finally cooled to obtain the 3D printing configuration wax.

[0060] Example 2

[0061] The present embodiment provides a 3D printing configuration wax, and the preparation process is as follows: 20 parts of glyceryl tristearate GTS, 30 parts of sunflower wax, 25 parts of 70# microcrystalline wax, and 0.05 parts of antioxidant are heated to 100°C. After the raw materials are melted, 25 parts of C5 hydrogenated petroleum resin are added under stirring at a stirring rate of 500 rpm until the petroleum resin is completely dissolved, 0.01 parts of toner are added, and stirring is continued for 1 hour at a stirring rate of 1000 rpm. The dispersed wax material is filtered through a filter membrane with a pore size of 1 μm, and finally cooled to obtain the 3D printing configuration wax.

[0062] Example 3

[0063] The present embodiment provides a 3D printing configuration wax, and the preparation process is as follows: 15 parts of hydrogenated castor wax, 3 parts of sunflower wax, 30 parts of 52# paraffin wax, and 0.05 parts of antioxidant are heated to 100°C. After the raw materials are melted, 25 parts of C5 hydrogenated petroleum resin are added under stirring at a stirring rate of 500 rpm until the petroleum resin is completely dissolved, 0.01 parts of color powder are added, and stirring is continued for 1 hour at a stirring rate of 1000 rpm. The dispersed wax material is filtered through a filter membrane with a pore size of 1 μm, and finally cooled to obtain the 3D printing configuration wax.

[0064] Example 4

[0065] The present embodiment provides a 3D printing configuration wax, and the preparation process is as follows: 15 parts of Euroceras 691, 35 parts of refined candelilla wax, 30 parts of 54# paraffin wax, and 0.05 parts of antioxidant are heated to 100°C, and after the raw materials are melted, 20 parts of C5 hydrogenated petroleum resin are added under stirring at a stirring rate of 500 rpm until the petroleum resin is completely dissolved, 0.01 parts of toner are added, and stirring is continued for 1 hour at a stirring rate of 1000 rpm. The dispersed wax material is filtered through a filter membrane with a pore size of 1 μm, and finally cooled to obtain the 3D printing configuration wax.

[0066] Example 5

[0067] The present embodiment provides a 3D printing configuration wax, and the preparation process is as follows: 15 parts of Euroceras 694, 30 parts of refined candelilla wax, 30 parts of 54# paraffin wax, and 0.05 parts of antioxidant are heated to 100°C. After the raw materials are melted, 25 parts of C5 hydrogenated petroleum resin are added under stirring at a stirring rate of 500 rpm until the petroleum resin is completely dissolved, 0.01 parts of toner are added, and stirring is continued for 1 hour at a stirring rate of 1000 rpm. The dispersed wax material is filtered through a filter membrane with a pore size of 1 μm, and finally cooled to obtain the 3D printing configuration wax.

[0068] Example 6

[0069] This embodiment provides a 3D printing configuration wax. The difference from Embodiment 4 is that 70# microcrystalline wax is used instead of 54# paraffin wax. The other raw materials and methods are the same as those in Embodiment 4 and will not be described again.

[0070] Example 7

[0071] The present embodiment provides a 3D printing configuration wax, and the preparation process is as follows: 20 parts of Euroceras 691, 30 parts of refined candelilla wax, 30 parts of 70# microcrystalline wax, and 0.05 parts of antioxidant are heated to 100°C, and after the raw materials are melted, 20 parts of C5 hydrogenated petroleum resin are added under stirring at a stirring rate of 500 rpm until the petroleum resin is completely dissolved, 0.01 parts of toner are added, and stirring is continued for 1 hour at a stirring rate of 1000 rpm. The dispersed wax material is filtered through a filter membrane with a pore size of 1 μm, and finally cooled to obtain the 3D printing configuration wax.

[0072] Example 8

[0073] The present embodiment provides a 3D printing configuration wax, and the preparation process is as follows: 5 parts of Euroceras 691, 40 parts of refined candelilla wax, 30 parts of 70# microcrystalline wax, and 0.05 parts of antioxidant are heated to 100°C, and after the raw materials are melted, 25 parts of C5 hydrogenated petroleum resin are added under stirring at a stirring rate of 500 rpm until the petroleum resin is completely dissolved, 0.01 parts of color powder are added, and stirring is continued for 1 hour at a stirring rate of 1000 rpm. The dispersed wax material is filtered through a filter membrane with a pore size of 1 μm, and finally cooled to obtain the 3D printing configuration wax.

[0074] Example 9

[0075] This embodiment provides a 3D printing configuration wax. The difference from Example 6 is that the amount of Euroceras 691 used is 3 parts, and the remaining raw materials and preparation methods are the same as those in Example 6, which will not be repeated here.

[0076] Example 10

[0077] This embodiment provides a 3D printing configuration wax. The difference from Example 6 is that the amount of Euroceras 691 used is 25 parts, and the remaining raw materials and preparation methods are the same as those in Example 6, which will not be repeated here.

[0078] Comparative Example 1

[0079] This comparative example provides a 3D printing configuration wax. The difference from Example 1 is that pentaerythritol stearate PETS is not added, and the remaining raw materials and methods are the same as those in Example 1, which will not be repeated here.

[0080] Comparative Example 2

[0081] This comparative example provides a 3D printing configuration wax. The difference from Example 2 is that glyceryl tristearate GTS is not added, and the remaining raw materials and methods are the same as those in Example 2, which will not be repeated here.

[0082] Comparative Example 3

[0083] This comparative example provides a 3D printing configuration wax. Unlike Example 3, hydrogenated castor wax is not added, and the remaining raw materials and methods are the same as those in Example 3, which will not be repeated here.

[0084] Comparative Example 4

[0085] This comparative example provides a 3D printing configuration wax. Unlike Example 4, Euroceras 691 is not added, and the remaining raw materials and methods are the same as those in Example 4, which will not be repeated here.

[0086] Test Case

[0087] The 3D printing configuration wax provided in the embodiment and the comparative example, and the supporting wax matched therewith were used to print a mechanical property test model on Wax Jet 510 to test the wax material printing jetting stability and molding stability.

[0088] The kinematic viscosity of the 3D printing configuration wax at 85°C was tested and recorded in Table 1.

[0089] Needle penetration test: A standard needle of a specific weight is vertically inserted into the 3D printed configuration wax within 5 seconds at 25°C, and the penetration depth of the needle is measured and recorded in Table 1.

[0090] The ash content test of 3D printing configuration wax is carried out in accordance with the national standard GB / T 14235.3-1993.

[0091] The volume shrinkage test was carried out in accordance with NB / SH / T 0588-2013, with the temperature dropping from 45°C to 25°C.

[0092] The tensile rate and bending performance test rate are both 10mm / min, the bending modulus is tested by the national standard test method GB / T9341-2008, and the elongation at break and tensile modulus are fixed on a universal testing machine with a self-made fixture and tested according to the national standard test method GB / T13022-1991.

[0093] The obtained performance data are shown in Table 1 below.

[0094] Table 1

[0095]

[0096] As can be seen from Table 1, when comparative examples 1-4 do not use branched ester wax, the elongation at break is relatively small, the modulus is moderate, and the printing wax exhibits relatively hard and brittle properties. Therefore, the use of branched ester wax can increase the elongation at break and modulus of the printing wax to varying degrees, showing strong and tough properties. The results of Examples 1 and 2 are relatively worse than those of Examples 3, 4 and 5, but the elongation at break is close, which is related to the molecular weight of the branched ester wax. The molecular weight of PETS and GTS is relatively small, and the interaction between molecules is relatively small.

[0097] It can be seen from Example 4 and Examples 6, 7, 8, 9 and 10 that the addition of the branched ester wax Euroceras 691 improves the mechanical properties and elongation at break of the wax material to varying degrees, indicating that the use of the branched ester wax can improve the strength and toughness of the wax material to a certain extent.

[0098] It can be seen from Examples 4 and 6 that low-melting-point paraffin wax and microcrystalline wax differ in molecular structure, and are relatively close in terms of printing effect and mechanical properties. However, the viscosity of low-melting-point paraffin wax is small, and the proportion of high-viscosity and high-molecular-weight materials can be increased in formula design, thereby improving the mechanical properties of the printing wax.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A 3D printing wax, characterized in that: The invention comprises 20 to 40 parts of vegetable wax, 25 to 30 parts of paraffin wax, 5 to 20 parts of branched ester wax and 15 to 30 parts of tackifying resin in parts by weight; The plant wax is at least one of candelilla wax, rice bran wax and sunflower wax; The paraffin wax is at least one of 52# paraffin wax, 54# paraffin wax and 70# microcrystalline wax; The branched ester wax is at least one of glyceryl tristearate, hydrogenated castor wax and synthetic polyester wax; The softening point of the tackifying resin is 70-140° C.; the tackifying resin includes C5 hydrogenated petroleum resin.

2. The 3D printing configuration wax according to claim 1, characterized in that: Also includes color powder and antioxidants; The weight portion of the toner is 0 to 0.02 parts; The weight portion of the antioxidant is 0 to 0.05 parts.

3. The 3D printing configuration wax according to claim 1, characterized in that: The brands of the synthetic polyester wax include Euroceras 691 and / or Euroceras 694.

4. The 3D printing configuration wax according to claim 2, characterized in that: The toner is oil-soluble toner; The antioxidant includes at least one of a hindered phenol antioxidant, a hindered amine antioxidant, a sulfate antioxidant and a phosphite antioxidant.

5. A method for preparing a 3D printing configuration wax according to any one of claims 1 to 4, characterized in that: Vegetable wax, paraffin wax, branched ester wax and optional antioxidant are mixed and melted; after melting, tackifying resin is added and mixed evenly, optional color powder is added and dispersed evenly, and finally filtered and cooled to obtain the 3D printing configuration wax.

6. The preparation method according to claim 5, characterized in that: The melting temperature is 90-110°C; The stirring rate after adding the tackifying resin is 400~600rpm; The stirring speed after adding the color powder is 800~1200rpm.

7. Use of the 3D printing configuration wax according to any one of claims 1 to 4 in precision casting, medical devices, artwork reproduction or jewelry design.

Images