EP4334390A1 - Method for producing 3d printing material and components made therefrom, and 3d printing material and component produced by the method - Google Patents

Method for producing 3d printing material and components made therefrom, and 3d printing material and component produced by the method

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Publication number
EP4334390A1
EP4334390A1 EP22726732.5A EP22726732A EP4334390A1 EP 4334390 A1 EP4334390 A1 EP 4334390A1 EP 22726732 A EP22726732 A EP 22726732A EP 4334390 A1 EP4334390 A1 EP 4334390A1
Authority
EP
European Patent Office
Prior art keywords
photocatalyst
printing material
layered silicate
produced
composite
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22726732.5A
Other languages
German (de)
French (fr)
Inventor
Volker ZÖLLMER
Arne Haberkorn
Cindy BEHRENS
Thorsten MÜLLER
Imre Dekany
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Publication of EP4334390A1 publication Critical patent/EP4334390A1/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00—Use of pretreated ingredients
    • C08K9/02—Ingredients treated with inorganic substances
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/10—Processes of additive manufacturing
    • B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
    • B29C64/118—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y70/00—Materials specially adapted for additive manufacturing
    • B33Y70/10—Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2258—Oxides; Hydroxides of metals of tungsten
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2262—Oxides; Hydroxides of metals of manganese
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2265—Oxides; Hydroxides of metals of iron
    • C08K2003/2275—Ferroso-ferric oxide (Fe3O4)
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2293—Oxides; Hydroxides of metals of nickel
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2296—Oxides; Hydroxides of metals of zinc
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/346—Clay

Definitions

  • the present invention relates to a method for producing 3D printing material.
  • a photocatalyst-layered silicate composite is first produced from at least one photocatalyst and at least one layered silicate.
  • a photocatalyst-layered silicate-polymer composite is then produced from the photocatalyst-layered silicate composite and at least one thermoplastic polymer.
  • the photocatalyst-layered silicate polymer composite is finally subjected to a molding process, whereby a 3D printed material is obtained.
  • the present invention relates to a 3D printing material comprising a thermoplastic matrix and a composite material embedded in the matrix, which contains at least one photocatalyst and at least one sheet silicate.
  • the present invention also relates to a method for producing components from the 3D printing material and a component produced therewith.
  • Thermoplastic polymers can be compounded with, for example, metallic, polymeric, ceramic and/or carbon-containing fillers to form composites, provided they are present, for example, as granulate-like semi-finished products.
  • the morphology and the amount of the fillers are decisive for the processability and the resulting properties of the composite.
  • composites can be processed on all established systems and machines in the plastics industry; they can be extruded and injection moulded. They can also be processed using rolling, pressing and calendering processes. In addition to these processes, composites can also be manufactured using additive processes to form components with batch sizes of up to 1.
  • FFF Fused Filament Fabrication
  • Photocatalysis is a general way of reducing bacterial or viral contamination. Recent work has shown that these photocatalysts also actively degrade bacteria (Tallosy et al., Applied Surface Science, 2016, 371, 139-150).
  • photocatalytically active coating can possibly reduce the duration of lasting contamination and thus minimize the risk of spreading the infection. Subsequent coating is always time-consuming and therefore expensive. In addition, a possible interaction of the coating with the component must be taken into account.
  • a photocatalytic coating can also break down bacteria and viruses (Menesi et al, Catalysjs Today 144 (2009) 160-165).
  • the coating itself cannot always be optimally adapted to the surfaces to be coated. For example, it can happen that the surface to be coated itself is damaged by the photocatalysis.
  • a method for producing (plastic) 3D printing material in which a) a photocatalyst-layered silicate composite is produced from at least one photocatalyst and at least one layered silicate, b) from the photocatalyst-layered silicate -Composite and at least one thermoplastic polymer, a photocatalyst layered silicate polymer composite is produced, and c) the photocatalyst layered silicate polymer composite is subjected to a molding process, whereby a (plastic) 3D printing material is obtained .
  • (Plastic) 3D printing material is understood to mean a material that can be used directly as a starting material for 3D printing in a BD printer can be used, so that components can be produced from the 3D printing material with the 3D printer using 3D printing.
  • the 3D printing material is therefore suitable (due to its composition and shape) for direct use in a 3D printer.
  • the 3D printing material can, for example, be selected from the group consisting of 3D printing filaments (or filaments for 3D printing), 3D printing granules (or granules for 3D printing) and 3D Printing rods (or rod-shaped material for 3D printing).
  • the 3D printing filaments can be FFF filaments (fused filament fabrication filaments).
  • the rod-shaped material for 3D printing can be produced in an extrusion process, whereby the material can be cut into defined lengths after extrusion in order to obtain the rod-shaped material.
  • composites are produced from (doped) photocatalysts (e.g. TiC>2 photocatalysts) and layered silicates, for example by intercalating the photocatalysts in layered silicates or adding onto layered silicates.
  • the resulting (doped) photocatalyst layered silicate composites are preferably formulated as a powder and can then be formulated directly (e.g. in a compounding process) to form (doped) photocatalyst layered silicate polymer composites.
  • these (doped) photocatalyst layered silicate polymer composites are subjected to a shaping process.
  • the (doped) photocatalyst layered silicate polymer composites are extruded to form FFF filaments.
  • the processing of the material described can be carried out on the established systems and machines in the plastics industry.
  • the material is suitable for extrusion and injection moulding.
  • it can also be processed via rolling, pressing and calendering processes.
  • the integrative processing of multi-component injection molding for component functionalization should be mentioned in particular.
  • a photocatalyst-layered silicate composite is first produced from at least one photocatalyst and at least one layered silicate.
  • the manufacture of Photocatalyst-layered silicate composites can preferably be achieved by the photocatalyst being intercalated in the layered silicate or being added onto the layered silicate.
  • an aqueous suspension can be prepared which contains the photocatalyst and the layered silicate in the desired weight ratio, eg between 1:1 and 10:1, where the photocatalyst-layered silicate composite is then obtained in the form of a powder after removing the water can be.
  • T1O2 or ZnO can be used as a photocatalyst.
  • the photocatalyst can be doped, for example with Ag or Cu, or doped during step a), for example with Ag or Cu. Alternatively, the photocatalyst can also be undoped.
  • the layered silicate can be, for example, hectorite, bentonite or montmorillonite.
  • the photocatalyst layered silicate composite produced in step a) is preferably in the form of a powder.
  • a photocatalyst-layered silicate-polymer composite is produced from the photocatalyst-layered silicate composite produced in step a) and at least one thermoplastic polymer. This is preferably done by compounding the photocatalyst layered silicate composite with the at least one thermoplastic polymer.
  • the photocatalyst layered silicate composite and the thermoplastic polymer are preferably used in a weight ratio of between 1:10 and 2:1.
  • the at least one thermoplastic polymer is preferably at least one thermoplastic elastomer.
  • step c) of the method according to the invention the photocatalyst layered silicate polymer composite produced in step b) is finally subjected to a shaping process, as a result of which a BD printing material is obtained.
  • the photocatalyst layered silicate polymer composite can be subjected to an extrusion process in step c), so that a 3D printing material is obtained in the form of composite filaments, which can be used in corresponding 3D printers.
  • the photocatalyst layered silicate polymer composite can be subjected to a granulation process in step c), so that a BD printing material is obtained in the form of composite granules that can be used in corresponding 3D printers.
  • BD printing material can be produced which comprises a thermoplastic matrix and a composite material embedded in the matrix, which contains at least one photocatalyst and at least one sheet silicate.
  • the 3D printing material and thus also a component or semi-finished product produced from the 3D printing material by means of 3D printing has a self-decontaminating effect. Due to this self-decontamination effect, bacteria and viruses can be broken down by exposure to sunlight, so that long-term contamination can be reduced in time and the risk of spreading infection can be minimized.
  • the combination of the - preferably doped - photocatalyst with layer silicates leads to a synergistic effect, which means that a significantly higher efficiency of the photocatalysis can be achieved.
  • the combination of the photocatalyst with the layered silicate means that the substances to be decomposed or bacteria and viruses can be brought into contact more effectively with the photocatalyst and can therefore be photocatalytically decomposed much more quickly.
  • the photocatalyst layered silicate composite the 3D printing material produced according to the invention and thus also a component or semi-finished product produced from the 3D printing material by means of 3D printing has a very effective self-decontaminating effect.
  • the 3D printing material produced in the method according to the invention comprises a photocatalyst layered silicate polymer composite, whereby the 3D printing material itself has a has a very effective self-decontaminating effect.
  • a component or semi-finished product made from the 3D printing material also has a very effective self-decontaminating effect.
  • the component therefore no longer has to be (subsequently) provided with an additional photocatalytic or antibacterial and/or antiviral coating in order to achieve a decontamination effect and to achieve protection against bacteria and viruses. Instead, the component has very effective protection against bacteria and viruses even without such a coating. By saving on an additional coating of the component, it can be manufactured much faster and more cost-effectively.
  • BD printing material having antibacterial and/or antiviral properties can thus be produced, from which components with antibacterial and/or antiviral properties can be produced by means of 3D printing.
  • a preferred variant of the method according to the invention is characterized in that the at least one photocatalyst is selected from the group consisting of T1O2, ZnO, SnC>2, WO3,
  • the at least one photocatalyst is particularly preferably T1O2 and/or ZnO, very particularly preferably T1O2, since this can achieve a particularly high antibacterial and antiviral effect.
  • the wavelength range in which the photocatalysis can take place can be influenced or adjusted.
  • the photocatalysis can take place in the visible range of light (eg, wavelength >430 nm).
  • the at least one metal with which the photocatalyst is or is doped is particularly preferably Ag and/or Cu.
  • the at least one metal with which the photocatalyst is or will be doped is very particularly preferably Cu.
  • the at least one sheet silicate is selected from the group consisting of hectorite, bentonite, montmorillonite, muscovite, lllite, kaolinite, halloysite,
  • the at least one layered silicate is very particularly preferably a layered silicate selected from the group consisting of hectorite, bentonite, montmorillonite and mixtures thereof.
  • the at least one photocatalyst is T1O2 and/or ZnO, in particular
  • the at least one photocatalyst is or will be doped with Cu and/or Ag, in particular with Cu, and the at least one layered silicate is selected from the group consisting of hectorite, bentonite, montmorillonite and mixtures thereof.
  • a further preferred variant of the method according to the invention is characterized in that in the production of the photocatalyst sheet silicate composite in step a) the weight ratio of the at least one photocatalyst to
  • the at least one layered silicate is in the range from 1:1 to 10:1, and/or the at least one photocatalyst is intercalated into the at least one layered silicate and/or is deposited onto the at least one layered silicate.
  • a further preferred variant of the method according to the invention is characterized in that in the production of the photocatalyst layered silicate polymer composite in step b) the weight ratio of the photocatalyst layered silicate composite to the at least one thermoplastic polymer is in the range from 1:10 to 2:1, and/or the photocatalyst layered silicate composite is compounded with the at least one thermoplastic polymer.
  • step a) 10 to 75% by weight, preferably 20 to 60% by weight, of at least one thermoplastic polymer, based on the total weight of the BD printing material to be produced, and/or in Step a) 10 to 60% by weight, preferably 20 to 50% by weight, of at least one photocatalyst, based on the total weight of the BD printing material to be produced, and/or in step b) 5 to 40% by weight %, preferably 10 to 30% by weight, particularly preferably 10 to 20% by weight, of the at least one layered silicate, based on the total weight of the 3D printing material to be produced.
  • the at least one thermoplastic polymer is selected from the group consisting of polyamide 6 (PA 6), polyamide 66 (PA 66), polyamide 12 (PA 12), polyamide 4.6 (PA 4.6), acrylonitrile - Butadiene-styrenes (ABS), polycarbonates (PC), polyethylene (PE), polypropylene (PP), polyphenylene sulfide (PPS), polyvinyl chloride (PVC), acrylonitrile-styrene acrylates, polyurethanes, epoxy resins and mixtures thereof.
  • a further preferred variant of the method according to the invention is characterized in that the shaping method in step c) is selected from the group consisting of extrusion methods, granulating methods, extrusion methods, cutting methods and combinations thereof.
  • 3D printing filaments can be produced with an extrusion process and 3D printing granules with a granulation process.
  • 3D printed rods can be made by first performing an extrusion process and then the material obtained in this way is cut in a cutting process.
  • the method according to the invention for producing 3D printed material is preferably a method for producing 3D printed material according to the present invention.
  • the present invention also relates to a 3D printing material, comprising a thermoplastic matrix and a composite material embedded in the matrix, which contains at least one photocatalyst and at least one sheet silicate.
  • 3D printing material is a material that can be used directly without further processing as the starting material for 3D printing in a 3D printer, so that the 3D printer can use 3D printing to produce components from the 3D Printing material can be produced.
  • the 3D printing material is thus suitable (due to its composition and shape) for direct use in a 3D printer.
  • the 3D printing material can, for example, be selected from the group consisting of 3D printing filaments (or filaments for 3D printing), 3D printing granules (or granules for 3D printing) and 3D -Print rods (or rod-shaped material for 3D printing).
  • the 3D printing filaments can be FFF filaments (fused filament fabrication filaments).
  • the rod-shaped material for 3D printing can be produced in an extrusion process, where the material can be cut to defined lengths after extrusion in order to obtain the rod-shaped material .
  • thermoplastic matrix is understood to mean a matrix that contains or consists of at least one thermoplastic polymer.
  • the printing material according to the invention comprises a photocatalyst layered silicate polymer composite, whereby the 3D printing material itself has a very effective self-decontamination has effect.
  • a component or semi-finished product produced by BD printing has a very effective self-decontaminating effect.
  • the component therefore no longer has to be provided with an additional photocatalytic or antibacterial and/or antiviral coating in order to achieve a decontamination effect and protection against bacteria and viruses. Instead, the component has very effective protection against bacteria and viruses even without such a coating. By saving on an additional coating of the component, it can be manufactured significantly faster and more cost-effectively.
  • a preferred embodiment of the 3D printing material according to the invention is characterized in that the at least one photocatalyst is selected from the group consisting of T1O2, ZnO, SnC>2, WO3,
  • the at least one sheet silicate is selected from the group consisting of hectorite, bentonite, montmorillonite, muscovite, lllite, kaolinite, halloysite, paligorskite, vermiculite and mixtures thereof , and/or in the form of oriented and/or curved lamellae.
  • Oriented lamellae can be understood to mean planar, parallel lamellae. Depending on the process, however, these lamellas can also curve.
  • the at least one photocatalyst is T1O2 and/or ZnO, in particular TiO2, the at least one photocatalyst is doped with Cu and/or Ag, in particular with Cu, and the at least one layered silicate is selected from the group consisting of hectorite, bentonite, montmorillonite and mixtures thereof.
  • the at least one thermoplastic polymer is preferably at least one thermoplastic elastomer.
  • the at least one thermoplastic polymer is selected from the group consisting of polyamide 6 (PA 6), polyamide 66 (PA 66), polyamide 12 (PA 12), polyamide 4.6 (PA 4.6), acrylonitrile butadiene styrenes (ABS), polycarbonates (PC), polyethylene (PE), polypropylene (PP), polyphenylene sulfide (PPS), polyvinyl chloride (PVC), acrylonitrile styrene acrylates, polyurethanes, epoxy resins and mixtures thereof.
  • a further preferred embodiment of the BD printing material according to the invention is characterized in that the 3D printing material
  • the 3D printing material is in the form of granules (or 3D printing granules or granules for 3D printing), filaments (or 3D printing Filament or filament for 3D printing) or in rod form (or as 3D printing rod or rod-shaped material for 3D printing).
  • the 3D printing filament can be an FFF filament (fused filament fabrication filament).
  • a further preferred embodiment of the BD printing material according to the invention is characterized in that the 3D printing material can be produced or has been produced using the method according to the invention for producing 3D printing material.
  • the present invention also relates to the use of the 3D printing material according to the invention in injection molding processes, in extrusion processes, in rolling processes, in calendering processes, and/or in 3D printing processes, preferably 3D printing layer construction processes.
  • the present invention also relates to a method for producing components, in which 3D printing material is produced according to the method according to the invention and at least one component is produced from the 3D printing material by means of 3D printing, preferably by means of an additive fusion layer method.
  • a photocatalyst-layered silicate composite is produced from at least one photocatalyst and at least one layered silicate
  • a photocatalyst-layered silicate-polymer composite is produced from the photocatalyst-layered silicate composite and at least one thermoplastic polymer produced
  • the photocatalyst layered silicate polymer composite is subjected to a shaping process, whereby a 3D printed material is obtained, and d) from the 3D printed material by means of 3D printing, preferably by means of an additive melt layer method, at least one component manufactured.
  • the present invention also relates to a method for producing components, in which a 3D printing material according to the invention or a 3D printing material that has been produced according to the method according to the invention for producing 3D printing material is provided and at least one component is produced from the 3D printing material by means of 3D printing, preferably by means of an additive fusion layer process.
  • the present invention further relates to a component comprising a thermoplastic matrix and a composite material embedded in the matrix, which contains at least one photocatalyst and at least one layered silicate, wherein the component can be produced according to the (or a) method according to the invention for the production of components or is made.
  • the component according to the invention can be an FFF component (fused filament fabrication component).
  • the present invention also relates to the use of the component according to the invention in the field of medical technology, life science, energy and environmental technology, the automotive and aviation industries.
  • the material approach used according to the invention can be verified by element-specific material analyzes (EDX).
  • EDX element-specific material analyzes
  • the composites described can also be precisely determined by transmission electron spectroscopy (TEM) in conjunction with EDX. Further analysis methods are given by X-ray diffractometry (XRD).
  • the composite comprises a photocatalyst 1 (e.g. T1O2 or ZnO), which is doped with a metal 2 (e.g. Cu or Ag), and a layered silicate 3 (e.g. hectorite, bentonite or montmorillonite).
  • the layered silicate 3 can be in the form of oriented and/or curved lamellae.
  • the composite comprises a photocatalyst 1 (eg T1O2 or ZnO), which is doped with a metal 2 (eg Cu or Ag), a sheet silicate 3 (eg hectorite, bentonite or montmorillonite), as well as a thermoplastic polymer matrix 4.
  • a photocatalyst 1 doped with the metal 2 and the sheet silicate S or the photocatalyst sheet silicate composite are embedded in the thermoplastic polymer matrix 4.
  • the layered silicate S can be in the form of oriented and/or curved lamellae.
  • a photocatalyst layered silicate composite is produced as follows: 80 ml H2O are mixed with 20 ml propanol. 1 g of an approx. 40% nanoscale Cu nanoparticle dispersion is added to this and mixed again. 5 g of bentonite are added to this mixture and the mixture is then dispersed with a magnetic stirrer for 18 hours. Then 20 g T1O2 are added and the mixture obtained is dispersed for one hour. The batch is dried at 60° C. for 12 hours. The mixture is then ground in a powder ball mill for 30 minutes and then calcined at 200° C. for 1 hour.
  • FFF filaments with a diameter of 1.75 mm are extruded from the granulate using a single-screw extruder at a temperature of 205.degree.
  • test specimens measuring 2.5 cm x 2.5 cm are printed using FFF printing.
  • a fifth step antibacterial tests are carried out.
  • three test samples are exposed to 10 6 CFU/mL of the "Escherichia coli" bacterium.
  • a Petri dish, in which one of the test bodies produced in the fourth step is placed, is used as the first test sample "PEBAX catalyst, printed".
  • a Petri dish is used as the second test sample "PEBAX catalyst, pressed", in which a Test body is placed, which was produced by hot pressing the filaments produced in the third step.
  • the third test sample "control sample” is a Petri dish without a test piece, which is used as a control.
  • the three test samples treated with 10 6 CFU/mL of the bacterium "Escherichia coli" are irradiated with a light source that has the spectrum of sunlight. Before the irradiation (0 h) and 1 h or 2 h after the irradiation, the bacteria -Concentration measured. The measurement is carried out via an optical determination, whereby the bacteria are counted with a "Sorcerer Colony Counter".
  • FIG. 4 shows photographs of the test samples before irradiation (0 h) and 1 h and 2 h after irradiation. It can be seen that after just 1 hour there was a significant degradation of the bacteria on the test surfaces of the “PEBAX catalyst, printed” sample and the “PEBAX catalyst, pressed” sample.
  • Second exemplary embodiment action against viruses
  • a photocatalyst layered silicate composite is produced as follows: 80 ml H2O are mixed with 20 ml propanol. 1 g of an approx. 40% nanoscale Cu nanoparticle dispersion is added to this and mixed again. 5 g of bentonite are added to this mixture and the mixture is then dispersed with a magnetic stirrer for 18 hours. Then 20 g T1O2 are added and the mixture obtained is dispersed for one hour. The batch is dried at 60° C. for 12 hours. The mixture is then ground in a powder ball mill for 30 minutes and then calcined at 200° C. for 1 hour.
  • FFF filaments with a diameter of 1.75 mm are extruded from the granulate using a single-screw extruder at a temperature of 205.degree.
  • test specimens measuring 5 cm x 5 cm are printed using FFF printing.
  • a fifth step antiviral tests are carried out.
  • four test samples are produced by applying 10 8 viruses/mL of the herpes virus “pseudirobies virus (PVR)” to four of the test bodies produced in the fourth step with a geometry of 5 cm ⁇ 5 cm.
  • PVR herpes virus
  • Two of the exposed test specimens are irradiated with a light source that has the spectrum of sunlight, two others are darkened.
  • DMEM Dulbecco's Modified Eagle's Medium
  • the concentration of infected cells is determined optically in order to determine the TCID50 (median tissue culture infected dose) value.
  • the measurement takes place via an optical determination, with the cells being counted with a "Sorcerer Colony Counter".
  • Fig. 5 The results of the measurements are shown in Fig. 5 as a diagram. It can be clearly seen that the virus concentration decreases after irradiation with the light source. Both irradiated samples have a significantly lower virus concentration than the two darkened samples. Viruses or damaged cells are no longer detectable in the sample irradiated with the light source, which was covered with the cell culture only 10 minutes later (or 30 minutes after drying). In the darkened samples, on the other hand, the virus concentration remained almost unchanged over the same period. It is thus clearly proven that the virus breakdown is caused by the irradiation with the light source and not by the mere drying and waiting time.
  • the left part (A) shows a section of a microscopic image of the sample that was irradiated with light and covered with the cell culture 30 min after drying. This sample is virus-free and has living cells.
  • the right part (B) shows a section of a microscopic image of the sample, which was darkened and covered with the cell culture 30 minutes after drying. This sample has infected and virus killed cells (round spots).

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Abstract

The present invention relates to a method for producing 3D printing material. In the method, a photocatalyst-sheet silicate composite is first produced from at least one photocatalyst and at least one sheet silicate. A photocatalyst-sheet silicate-polymer composite is then produced from the photocatalyst-sheet silicate composite and at least one thermoplastic polymer. The photocatalyst-sheet silicate-polymer composite is lastly subjected to a shaping process to obtain a 3D printing material. The present invention additionally relates to a 3D printing material comprising a thermoplastic matrix and a composite material which is embedded in the matrix and contains at least one photocatalyst and at least one sheet silicate. The present invention further relates to a method for producing components from the 3D printing material and to a component produced thereby.

Description

Verfahren zur Herstellung von 3D-Druck-Material und von Bauteilen daraus sowie 3D-Druck-Material und mit dem Verfahren hergestelltes Bauteil Method for producing 3D printing material and components made from it, and 3D printing material and component produced using the method
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von 3D- Druck-Material. Im Verfahren wird zunächst aus mindestens einem Photoka talysator und mindestens einem Schichtsilicat ein Photokatalysator-Schichtsili- cat-Komposit hergestellt. Aus dem Photokatalysator-Schichtsilicat-Komposit und mindestens einem thermoplastischen Polymer wird dann ein Photokata- lysator-Schichtsilicat-Polymer-Komposit hergestellt. Der Photokatalysator- Schichtsilicat-Polymer-Komposit wird schließlich einem Formgebungsverfah ren unterzogen, wodurch ein 3D-Druck-Material erhalten wird. Zudem betrifft die vorliegende Erfindung ein 3D-Druck-Material umfassend eine thermoplas tische Matrix sowie einen in die Matrix eingebettetes Kompositmaterial, wel ches mindestens einen Photokatalysator und mindestens ein Schichtsilicat enthält. Die vorliegende Erfindung betrifft ferner ein Verfahren zur Herstel lung von Bauteilen aus dem 3D-Druck-Material sowie ein damit hergestelltes Bauteil. Thermoplastische Polymere können, sofern z.B. als Granulat-artiges Halbzeug vorliegend, mit z.B. metallischen, polymeren, keramischen und/oder Kohlen stoff-haltigen Füllstoffen zu Kompositen kompoundiert werden. Die Morpho logie und die Menge der Füllstoffe sind entscheidend für die Verarbeitbarkeit und die resultierenden Eigenschaften der Komposite. The present invention relates to a method for producing 3D printing material. In the process, a photocatalyst-layered silicate composite is first produced from at least one photocatalyst and at least one layered silicate. A photocatalyst-layered silicate-polymer composite is then produced from the photocatalyst-layered silicate composite and at least one thermoplastic polymer. The photocatalyst-layered silicate polymer composite is finally subjected to a molding process, whereby a 3D printed material is obtained. In addition, the present invention relates to a 3D printing material comprising a thermoplastic matrix and a composite material embedded in the matrix, which contains at least one photocatalyst and at least one sheet silicate. The present invention also relates to a method for producing components from the 3D printing material and a component produced therewith. Thermoplastic polymers can be compounded with, for example, metallic, polymeric, ceramic and/or carbon-containing fillers to form composites, provided they are present, for example, as granulate-like semi-finished products. The morphology and the amount of the fillers are decisive for the processability and the resulting properties of the composite.
Die Verarbeitung dieser Komposite kann auf allen etablierten Anlagen und Maschinen der Kunststoffindustrie erfolgen, sie sind extrusions- und spritz gussfähig. Des Weiteren können sie auch über Walz-, Press- und Kalandrier- prozesse verarbeitet werden. Neben diesen Verfahren können Komposite auch mittels generativen Prozessen zu Bauteilen mit Losgrößen von bis zu 1 hergestellt werden. These composites can be processed on all established systems and machines in the plastics industry; they can be extruded and injection moulded. They can also be processed using rolling, pressing and calendering processes. In addition to these processes, composites can also be manufactured using additive processes to form components with batch sizes of up to 1.
Es gibt heute bereits neben reinen polymeren Fused Filament Fabrication (FFF)-Filamenten zahlreiche Polymer-Komposit-FFF-Filamente für den 3D- Druck. Es lassen sich damit eine Vielzahl von Bauteilen mit unterschiedlichen Materialien schnell und kostengünstig hersteilen. In addition to pure polymer Fused Filament Fabrication (FFF) filaments, there are already numerous polymer composite FFF filaments for 3D printing. A large number of components with different materials can thus be produced quickly and inexpensively.
Werden diese Bauteile einer bakteriellen oder viralen Belastung ausgesetzt, so werden die Oberflächen derartiger Bauteile normalerweise bakteriell oder viral konterminiert und stellen einen potentiellen Infektionsnukleus dar. If these components are exposed to bacterial or viral contamination, the surfaces of such components are normally contaminated with bacteria or viruses and represent a potential nucleus of infection.
Eine generelle Möglichkeit, bakterielle oder virale Kontaminationen abzu bauen, ist durch die Photokatalyse gegeben. In jüngeren Arbeiten konnte ge zeigt werden, dass diese Photokatalysatoren auch Bakterien aktiv abbauen (Tallosy et al., Applied Surface Science, 2016, 371, 139-150). Photocatalysis is a general way of reducing bacterial or viral contamination. Recent work has shown that these photocatalysts also actively degrade bacteria (Tallosy et al., Applied Surface Science, 2016, 371, 139-150).
Eine nachträgliche, photokatalytisch-aktive Beschichtung kann eine nachhal tige Kontamination ggfs zeitlich reduzieren und damit die Gefahr einer Infek tionsverbreiterung minimieren. Eine nachträgliche Beschichtung ist aber im mer zeit- und damit kostenintensiv. Darüber hinaus muss eine mögliche Wechselwirkung der Beschichtung mit dem Bauteil berücksichtigt werden. Subsequent, photocatalytically active coating can possibly reduce the duration of lasting contamination and thus minimize the risk of spreading the infection. Subsequent coating is always time-consuming and therefore expensive. In addition, a possible interaction of the coating with the component must be taken into account.
Es gibt zahlreiche Arbeiten zur Beschichtung von Oberflächen mit (nano-) sil berhaltigen, antibakteriell-wirkenden Beschichtungen. Aktuell werden diese jedoch wegen der möglichen Toxizität nanoskaliger Metalle kritisch diskutiert. There are numerous works on the coating of surfaces with (nano)silver-containing, antibacterial coatings. Currently these however, critically discussed because of the possible toxicity of nanoscale metals.
Eine photokatalytische Beschichtung kann Bakterien und Viren ebenfalls ab bauen (Menesi et al, Catalysjs Today 144 (2009) 160-165). Die Beschichtung selbst kann dabei aber nicht immer optimal auf die zu beschichtenden Ober flächen angepasst werden. So kann es z.B. sein, dass durch die Photokatalyse die zu beschichtende Oberfläche selbst beschädigt wird. A photocatalytic coating can also break down bacteria and viruses (Menesi et al, Catalysjs Today 144 (2009) 160-165). However, the coating itself cannot always be optimally adapted to the surfaces to be coated. For example, it can happen that the surface to be coated itself is damaged by the photocatalysis.
Ausgehend hiervon war es die Aufgabe der vorliegenden Erfindung ein Ver fahren zur Herstellung von BD-Druck-Material anzugeben, mit dem ein anti bakterielle und/oder antivirale Eigenschaften aufweisendes 3D-Druck-Mate- rial hergestellt werden kann, aus welchem mittels 3D-Druck Bauteile mit anti bakteriellen und/oder antiviralen Eigenschaften herstellbar sind. Proceeding from this, it was the object of the present invention to specify a method for producing BD printing material, with which a 3D printing material having antibacterial and/or antiviral properties can be produced, from which by means of 3D printing Components with antibacterial and / or antiviral properties can be produced.
Diese Aufgabe wird bezüglich eines Verfahrens zur Herstellung von BD-Druck- Material mit den Merkmalen des Patentanspruchs 1, bezüglich eines 3D- Druck-Materials mit den Merkmalen des Patentanspruchs 8, bezüglich eines Verfahrens zur Herstellung von Bauteilen mit den Merkmalen des Patentan spruchs 15 und bezüglich eines Bauteils mit den Merkmalen des Patentan spruchs 16 gelöst. Die jeweilig abhängigen Patentansprüche stellen dabei vor teilhafte Weiterbildungen dar. This object is with respect to a method for producing BD printing material with the features of claim 1, with respect to a 3D printing material with the features of claim 8, with respect to a method for producing components with the features of patent claim 15 and with respect to a component with the features of patent claim 16 solved. The respective dependent patent claims represent advantageous developments.
Erfindungsgemäß wird somit ein Verfahren zur Herstellung von (Kunst- stoff-)3D-Druck-Material angegeben, bei welchem a) aus mindestens einem Photokatalysator und mindestens einem Schichtsil icat ein Photokatalysator-Schichtsilicat-Komposit hergestellt wird, b) aus dem Photokatalysator-Schichtsilicat-Komposit und mindestens einem thermoplastischen Polymer ein Photokatalysator-Schichtsilicat-Polymer- Komposit hergestellt wird, und c) der Photokatalysator-Schichtsilicat-Polymer-Komposit einem Formge bungsverfahren unterzogen wird, wodurch ein (Kunststoff-)3D-Druck-Ma- terial erhalten wird. According to the invention, a method for producing (plastic) 3D printing material is thus specified, in which a) a photocatalyst-layered silicate composite is produced from at least one photocatalyst and at least one layered silicate, b) from the photocatalyst-layered silicate -Composite and at least one thermoplastic polymer, a photocatalyst layered silicate polymer composite is produced, and c) the photocatalyst layered silicate polymer composite is subjected to a molding process, whereby a (plastic) 3D printing material is obtained .
Unter (Kunststoff-)3D-Druck-Material wird ein Material verstanden, das direkt ohne weitere Verarbeitung als Ausgangsmaterial für den 3D-Druck in einem BD-Drucker verwendet werden kann, so dass mit dem 3D-Drucker mittels 3D- Druck Bauteile aus dem 3D-Druck-Material hergestellt werden können. Das 3D-Druck-Material ist somit (aufgrund seiner Zusammensetzung und seiner Form) für die direkte Verwendung in einem 3D-Drucker geeignet. Das 3D- Druck-Material kann beispielsweise ausgewählt sein aus der Gruppe beste hend aus 3D-Druck-Filamenten (bzw. Filamenten für den 3D-Druck), 3D- Druck-Granulat (bzw. Granulat für den 3D-Druck) und 3D-Druck-Stangen (bzw. stangenförmigem Material für den 3D-Druck). Bei den 3D-Druck-Filamenten kann es sich um FFF-Filamente (Fused-Filament-Fabrication-Filamente) han deln. Das stangenförmige Material für den 3D-Druck kann wie die Filamente für den 3D-Druck (Endlos-Halbzeug) in einem Extrusionsprozess hergestellt werden, wobei das Material hierbei nach der Extrusion in definierte Längen zugeschnitten werden kann, um das stangenförmige Material zu erhalten. (Plastic) 3D printing material is understood to mean a material that can be used directly as a starting material for 3D printing in a BD printer can be used, so that components can be produced from the 3D printing material with the 3D printer using 3D printing. The 3D printing material is therefore suitable (due to its composition and shape) for direct use in a 3D printer. The 3D printing material can, for example, be selected from the group consisting of 3D printing filaments (or filaments for 3D printing), 3D printing granules (or granules for 3D printing) and 3D Printing rods (or rod-shaped material for 3D printing). The 3D printing filaments can be FFF filaments (fused filament fabrication filaments). Like the filaments for 3D printing (endless semi-finished product), the rod-shaped material for 3D printing can be produced in an extrusion process, whereby the material can be cut into defined lengths after extrusion in order to obtain the rod-shaped material.
Im erfindungsgemäßen Verfahren werden in einem ersten Schritt Komposite aus (dotierten) Photokatalysatoren (z.B. TiC>2-Photokatalysatoren) und Schichtsilicaten hergestellt, beispielsweise in dem die Photokatalysatoren in Schichtsilikate interkalliert bzw. auf Schichtsilikate angelagert werden. Die so resultierenden (dotierten) Photokatalysator-Schichtsilicat-Komposite werden vorzugsweise als Pulver formuliert und können dann direkt zunächst (z.B. in einen Kompoundierprozess) zu (dotierten) Photokatalysator-Schichtsilikat-Po- lymer-Kompositen formuliert werden. In einem weiteren Prozessschritt wer den diese (dotierten) Photokatalysator-Schichtsilikat-Polymer-Komposite ei nem Formgebungsprozess unterzogen. Beispielsweise werden die (dotierten) Photokatalysator-Schichtsilikat-Polymer-Komposite zu FFF-Filamenten extru diert. Diese beschriebene Verarbeitung des Materials kann auf den etablier ten Anlagen und Maschinen der Kunststoffindustrie erfolgen. Das Material ist extrusions- und spritzgussfähig. Des Weiteren kann es auch über Walz-, Press- und Kalandrierprozesse verarbeitet werden. Hinsichtlich möglicher Anwen dungen des Kompositmaterials ist insbesondere der integrative Verarbei tungsprozess des Mehrkomponentenspritzgusses zur Bauteilfunktionalisie- rung zu nennen. In the first step of the process according to the invention, composites are produced from (doped) photocatalysts (e.g. TiC>2 photocatalysts) and layered silicates, for example by intercalating the photocatalysts in layered silicates or adding onto layered silicates. The resulting (doped) photocatalyst layered silicate composites are preferably formulated as a powder and can then be formulated directly (e.g. in a compounding process) to form (doped) photocatalyst layered silicate polymer composites. In a further process step, these (doped) photocatalyst layered silicate polymer composites are subjected to a shaping process. For example, the (doped) photocatalyst layered silicate polymer composites are extruded to form FFF filaments. The processing of the material described can be carried out on the established systems and machines in the plastics industry. The material is suitable for extrusion and injection moulding. Furthermore, it can also be processed via rolling, pressing and calendering processes. With regard to possible applications of the composite material, the integrative processing of multi-component injection molding for component functionalization should be mentioned in particular.
In Schritt a) des erfindungsgemäßen Verfahrens erfolgt zunächst die Herstel lung eines Photokatalysator-Schichtsilicat-Komposits aus mindestens einem Photokatalysator und mindestens einem Schichtsilicat. Die Herstellung des Photokatalysator-Schichtsilicat-Komposits kann vorzugsweise dadurch erfol gen, dass der Photokatalysator in das Schichtsilicat interkalliert bzw. auf das Schichtsilicat angelagert wird. Hierfür kann beispielsweise eine wässrige Sus pension hergestellt werden, die den Photokatalysator und das Schichtsilicat im gewünschten Gewichtsverhältnis, z.B. zwischen 1:1 und 10:1, enthält, wo bei dann nach Entfernen des Wassers der Photokatalysator-Schichtsilicat- Komposit in Form eines Pulvers erhalten werden kann. Als Photokatalysator kann z.B. T1O2 oder ZnO verwendet werden. Der Photokatalysator kann do tiert sein, beispielsweise mit Ag oder Cu, oder während Schritt a) dotiert wer den, beispielsweise mit Ag oder Cu. Alternativ kann der Photokatalysator auch undotiert vorliegen. Beim Schichtsilicat kann es sich z.B. um Hectorit, Bentonit oder Montmorillonit handeln. Vorzugsweise liegt der in Schritt a) hergestellte Photokatalysator-Schichtsilicat-Komposit als Pulver vor. In step a) of the method according to the invention, a photocatalyst-layered silicate composite is first produced from at least one photocatalyst and at least one layered silicate. The manufacture of Photocatalyst-layered silicate composites can preferably be achieved by the photocatalyst being intercalated in the layered silicate or being added onto the layered silicate. For this purpose, for example, an aqueous suspension can be prepared which contains the photocatalyst and the layered silicate in the desired weight ratio, eg between 1:1 and 10:1, where the photocatalyst-layered silicate composite is then obtained in the form of a powder after removing the water can be. T1O2 or ZnO, for example, can be used as a photocatalyst. The photocatalyst can be doped, for example with Ag or Cu, or doped during step a), for example with Ag or Cu. Alternatively, the photocatalyst can also be undoped. The layered silicate can be, for example, hectorite, bentonite or montmorillonite. The photocatalyst layered silicate composite produced in step a) is preferably in the form of a powder.
In Schritt b) des erfindungsgemäßen Verfahrens wird aus dem in Schritt a) hergestellten Photokatalysator-Schichtsilicat-Komposit und mindestens einem thermoplastischen Polymer ein Photokatalysator-Schichtsilicat-Polymer-Kom- posit hergestellt. Vorzugsweise erfolgt dies durch eine Compoundierung des Photokatalysator-Schichtsilicat-Komposits mit dem mindestens einen thermo plastischen Polymer. Hierbei werden der Photokatalysator-Schichtsilicat-Kom- posit und das thermoplastische Polymer vorzugweise in einem Gewichtsver hältnis zwischen 1:10 und 2:1 eingesetzt. Bei dem mindestens einen thermo plastischen Polymer handelt es sich vorzugsweise um mindestens ein thermo plastisches Elastomer. In step b) of the method according to the invention, a photocatalyst-layered silicate-polymer composite is produced from the photocatalyst-layered silicate composite produced in step a) and at least one thermoplastic polymer. This is preferably done by compounding the photocatalyst layered silicate composite with the at least one thermoplastic polymer. Here, the photocatalyst layered silicate composite and the thermoplastic polymer are preferably used in a weight ratio of between 1:10 and 2:1. The at least one thermoplastic polymer is preferably at least one thermoplastic elastomer.
In Schritt c) des erfindungsgemäßen Verfahrens wird der in Schritt b) herge stellte Photokatalysator-Schichtsilicat-Polymer-Komposit schließlich einem Formgebungsverfahren unterzogen wird, wodurch ein BD-Druck-Material er halten wird. Beispielsweise kann der Photokatalysator-Schichtsilicat-Polymer- Komposit in Schritt c) einem Extrusionsverfahren unterzogen werden, sodass ein 3D-Druck-Material in Form von Komposit-Filamenten erhalten wird, das in entsprechenden 3D-Druckern eingesetzt werden kann. Gemäß einem alterna tiven Beispiel kann der Photokatalysator-Schichtsilicat-Polymer-Komposit in Schritt c) einem Granulierverfahren unterzogen werden, sodass ein BD-Druck- Material in Form eines Komposit-Granulats erhalten wird, das in entsprechen den 3D-Druckern eingesetzt werden kann. Mit dem erfindungsgemäßen Verfahren kann BD-Druck-Material hergestellt werden, das eine thermoplastische Matrix sowie einen in die Matrix eingebet tetes Kompositmaterial, welches mindestens einen Photokatalysator und min destens ein Schichtsilicat enthält, umfasst. In step c) of the method according to the invention, the photocatalyst layered silicate polymer composite produced in step b) is finally subjected to a shaping process, as a result of which a BD printing material is obtained. For example, the photocatalyst layered silicate polymer composite can be subjected to an extrusion process in step c), so that a 3D printing material is obtained in the form of composite filaments, which can be used in corresponding 3D printers. According to an alternative example, the photocatalyst layered silicate polymer composite can be subjected to a granulation process in step c), so that a BD printing material is obtained in the form of composite granules that can be used in corresponding 3D printers. With the method according to the invention, BD printing material can be produced which comprises a thermoplastic matrix and a composite material embedded in the matrix, which contains at least one photocatalyst and at least one sheet silicate.
Durch den im erfindungsgemäß hergestellten 3D-Druck-Material enthaltenen Photokatalysator weist das 3D-Druck-Material und damit auch ein aus dem 3D-Druck-Material mittels 3D-Druck hergestelltes Bauteil oder Halbzeug eine selbstdekontaminierende Wirkung auf. Aufgrund dieser selbstdekontaminie- renden Wirkung können durch Einstrahlung von Sonnenlicht Bakterien und Vi ren abgebaut werden, sodass eine nachhaltige Kontamination zeitlich redu ziert und damit die Gefahr einer Infektionsverbreiterung minimiert werden kann. Due to the photocatalyst contained in the 3D printing material produced according to the invention, the 3D printing material and thus also a component or semi-finished product produced from the 3D printing material by means of 3D printing has a self-decontaminating effect. Due to this self-decontamination effect, bacteria and viruses can be broken down by exposure to sunlight, so that long-term contamination can be reduced in time and the risk of spreading infection can be minimized.
Die Kombination des - vorzugweise dotierten - Photokatalysators mit Schicht silicaten führt zu einem synergistischen Effekt, wodurch eine deutlich höhere Effizienz der Photokatalyse erreicht werden kann. So können durch die Kom bination des Photokatalysators mit dem Schichtsilicats die abzubauenden Sub stanzen bzw. Bakterien und Viren effektiver mit dem Photokatalysator in Kon takt gebracht und können dadurch deutlich schneller photokatalytisch zer setzt werden. Durch die Verwendung des Photokatalysator-Schichtsilicat- Komposits weist das erfindungsgemäß hergestellte 3D-Druck-Material und da mit auch ein aus dem 3D-Druck-Material mittels 3D-Druck hergestelltes Bau teil oder Halbzeug eine sehr effektive selbstdekontaminierende Wirkung auf. The combination of the - preferably doped - photocatalyst with layer silicates leads to a synergistic effect, which means that a significantly higher efficiency of the photocatalysis can be achieved. The combination of the photocatalyst with the layered silicate means that the substances to be decomposed or bacteria and viruses can be brought into contact more effectively with the photocatalyst and can therefore be photocatalytically decomposed much more quickly. Through the use of the photocatalyst layered silicate composite, the 3D printing material produced according to the invention and thus also a component or semi-finished product produced from the 3D printing material by means of 3D printing has a very effective self-decontaminating effect.
Aufgrund der Integration des Photokatalysator-Schichtsilicat-Komposits (als Füllstoff) in das thermoplastische Polymer umfasst das im erfindungsgemäßen Verfahren hergestellte 3D-Druck-Material einen Photokatalysator-Schichtsili- cat-Polymer-Komposit, wodurch das 3D-Druck-Material von sich aus eine sehr effektive selbstdekontaminierende Wirkung aufweist. In der Folge weist auch ein aus dem 3D-Druck-Material mittels 3D-Druck hergestelltes Bauteil oder Halbzeug von sich aus eine sehr effektive selbstdekontaminierende Wirkung auf. Das Bauteil muss somit nicht mehr (nachträglich) mit einer zusätzlichen photokatalytischen bzw. antibakteriell und/oder antiviral wirkenden Beschich tung versehen werden, um eine dekontaminierende Wirkung zu erreichen und einen Schutz vor Bakterien und Viren zu erreichen. Stattdessen weist das Bauteil auch ohne eine solche Beschichtung einen sehr effektiven Schutz vor Bakterien und Viren auf. Durch das Einsparen einer zusätzlichen Beschichtung des Bauteils kann dieses deutlich schneller und kostengünstiger hergestellt werden. Due to the integration of the photocatalyst layered silicate composite (as a filler) in the thermoplastic polymer, the 3D printing material produced in the method according to the invention comprises a photocatalyst layered silicate polymer composite, whereby the 3D printing material itself has a has a very effective self-decontaminating effect. As a result, a component or semi-finished product made from the 3D printing material also has a very effective self-decontaminating effect. The component therefore no longer has to be (subsequently) provided with an additional photocatalytic or antibacterial and/or antiviral coating in order to achieve a decontamination effect and to achieve protection against bacteria and viruses. Instead, the component has very effective protection against bacteria and viruses even without such a coating. By saving on an additional coating of the component, it can be manufactured much faster and more cost-effectively.
Mit dem erfindungsgemäßen Verfahren kann somit ein antibakterielle und/o der antivirale Eigenschaften aufweisendes BD-Druck-Material hergestellt wer den, aus welchem mittels 3D-Druck Bauteile mit antibakteriellen und/oder an tiviralen Eigenschaften herstellbar sind. With the method according to the invention, a BD printing material having antibacterial and/or antiviral properties can thus be produced, from which components with antibacterial and/or antiviral properties can be produced by means of 3D printing.
Eine bevorzugte Variante des erfindungsgemäßen Verfahrens zeichnet sich dadurch aus, dass der mindestens eine Photokatalysator ausgewählt ist aus der Gruppe bestehend aus T1O2, ZnO, SnC>2, WO3,A preferred variant of the method according to the invention is characterized in that the at least one photocatalyst is selected from the group consisting of T1O2, ZnO, SnC>2, WO3,
Fe2C>3, Fe3Ü4, MnO, NiO und Mischungen hiervon, und/oder mit mindestens einem Metall dotiert ist oder während Schritt a) mit min destens einem Metall dotiert wird, wobei das mindestens eine Metall vor zugsweise ausgewählt ist aus der Gruppe bestehend aus Ag, Cu, Au, Pd, Pt, Rh, Cd und Mischungen hiervon. Fe 2 C> 3 , Fe 3Ü4 , MnO, NiO and mixtures thereof, and / or doped with at least one metal or during step a) with at least one metal is doped, wherein the at least one metal is preferably selected from the group consisting of Ag, Cu, Au, Pd, Pt, Rh, Cd and mixtures thereof.
Durch die Verwendung von T1O2, ZnO, SnC>2, WO3, Fe2Ü3, Fe3Ü4, MnO, NiO o- der Mischungen hiervon als Photokatalysator kann eine hohe antibakterielle und antivirale Wirkung erreicht werden. Besonders bevorzugt handelt es sich bei dem mindestens einen Photokatalysator um T1O2 und/oder ZnO, ganz be sonders bevorzugt um T1O2, da durch diese eine besonders hohe antibakteri elle und antivirale Wirkung erreicht werden kann. By using T1O2, ZnO, SnC> 2 , WO3, Fe2O3 , Fe3O4 , MnO, NiO or mixtures thereof as a photocatalyst, a high antibacterial and antiviral effect can be achieved. The at least one photocatalyst is particularly preferably T1O2 and/or ZnO, very particularly preferably T1O2, since this can achieve a particularly high antibacterial and antiviral effect.
Durch die Dotierung des Photokatalysators mit mindestens einem Metall kann der Wellenlängenbereich, in welchem die Photokatalyse erfolgen kann, beein flusst bzw. eingestellt werden. So kann beispielsweise durch Dotierung des Photokatalysators mit Ag erreicht werden, dass die Photokatalyse im sichtba ren Bereich des Lichts (z.B. Wellenlänge > 430 nm) erfolgt. Besonders bevor zugt ist das mindestens eine Metall, mit welchem der Photokatalysator dotiert ist bzw. wird, Ag und/oder Cu. Ganz besonders bevorzugt ist das mindestens eine Metall, mit welchem der Photokatalysator dotiert ist bzw. wird, Cu. Gemäß einer weiteren bevorzugten Variante des erfindungsgemäßen Verfah rens ist das mindestens eine Schichtsilicat ausgewählt aus der Gruppe beste hend aus Hectorit, Bentonit, Montmorillonit, Muskovit, lllit, Kaolinit, Halloysit,By doping the photocatalyst with at least one metal, the wavelength range in which the photocatalysis can take place can be influenced or adjusted. For example, by doping the photocatalyst with Ag, the photocatalysis can take place in the visible range of light (eg, wavelength >430 nm). The at least one metal with which the photocatalyst is or is doped is particularly preferably Ag and/or Cu. The at least one metal with which the photocatalyst is or will be doped is very particularly preferably Cu. According to a further preferred variant of the method according to the invention, the at least one sheet silicate is selected from the group consisting of hectorite, bentonite, montmorillonite, muscovite, lllite, kaolinite, halloysite,
5 Paligorskit, Vermikulit und Mischungen hiervon. Durch Verwendung dieser Schichtsilicate kann die Effizienz der Photokatalyse stark erhöht. Ganz beson ders bevorzugt handelt es sich bei dem mindestens einen Schichtsilicat um ein Schichtsilicat ausgewählt aus der Gruppe bestehend aus Hectorit, Bentonit, Montmorillonit und Mischungen hiervon. Mit diesen kann eine besonders5 paligorskite, vermiculite and mixtures thereof. By using these layered silicates, the efficiency of the photocatalysis can be greatly increased. The at least one layered silicate is very particularly preferably a layered silicate selected from the group consisting of hectorite, bentonite, montmorillonite and mixtures thereof. With these, a special
10 starke Erhöhung der Effizienz der Photokatalyse erreicht werden. 10 strong increase in the efficiency of photocatalysis can be achieved.
In einer ganz besonders bevorzugten Variante des erfindungsgemäßen Ver fahrens ist der mindestens eine Photokatalysator T1O2 und/oder ZnO, insbesonIn a very particularly preferred variant of the process according to the invention, the at least one photocatalyst is T1O2 and/or ZnO, in particular
15 dere T1O2, ist oder wird der mindestens eine Photokatalysator mit Cu und/oder Ag, insbesondere mit Cu, dotiert, und ist das mindestens eine Schichtsilicat ausgewählt aus der Gruppe beste hend aus Hectorit, Bentonit, Montmorillonit und Mischungen hiervon.15 dere T1O2, the at least one photocatalyst is or will be doped with Cu and/or Ag, in particular with Cu, and the at least one layered silicate is selected from the group consisting of hectorite, bentonite, montmorillonite and mixtures thereof.
20 20
Eine weitere bevorzugte Variante des erfindungsgemäßen Verfahrens ist dadurch gekennzeichnet, dass bei der Herstellung des Photokatalysator- Schichtsilicat-Komposits in Schritt a) das Gewichtsverhältnis von dem mindestens einen Photokatalysator zuA further preferred variant of the method according to the invention is characterized in that in the production of the photocatalyst sheet silicate composite in step a) the weight ratio of the at least one photocatalyst to
25 dem mindestens einen Schichtsilicat im Bereich von 1:1 bis 10:1 liegt, und/oder der mindestens eine Photokatalysator in das mindestens eine Schichtsili cat interkalliert wird und/oder auf das mindestens eine Schichtsilicat ange lagert wird. 25 the at least one layered silicate is in the range from 1:1 to 10:1, and/or the at least one photocatalyst is intercalated into the at least one layered silicate and/or is deposited onto the at least one layered silicate.
BO BO
Eine weitere bevorzugte Variante des erfindungsgemäßen Verfahrens zeich net sich dadurch aus, dass bei der Herstellung des Photokatalysator-Schichtsil- icat-Polymer-Komposits in Schritt b) das Gewichtsverhältnis von dem Photokatalysator-Schichtsilicat-Komposit zu dem mindestens einen thermoplastischen Polymer im Bereich von 1:10 bis 2:1 liegt, und/oder eine Compoundierung des Photokatalysator-Schichtsilicat-Komposits mit dem mindestens einen thermoplastischen Polymer erfolgt. A further preferred variant of the method according to the invention is characterized in that in the production of the photocatalyst layered silicate polymer composite in step b) the weight ratio of the photocatalyst layered silicate composite to the at least one thermoplastic polymer is in the range from 1:10 to 2:1, and/or the photocatalyst layered silicate composite is compounded with the at least one thermoplastic polymer.
Weiterhin ist es bevorzugt, dass in Schritt a) 10 bis 75 Gew.-%, bevorzugt 20 bis 60 Gew.-%, des mindes tens einen thermoplastischen Polymers, bezogen auf das Gesamtgewicht des herzustellenden BD-Druck-Materials, und/oder in Schritt a) 10 bis 60 Gew.-%, bevorzugt 20 bis 50 Gew.-%, des mindes tens einen Photokatalysators, bezogen auf das Gesamtgewicht des herzu stellenden BD-Druck-Materials, und/oder in Schritt b) 5 bis 40 Gew.-%, bevorzugt 10 bis 30 Gew.-%, besonders be vorzugt 10 bis 20 Gew.-%, des mindestens einen Schichtsilicats, bezogen auf das Gesamtgewicht des herzustellenden 3D-Druck-Materials, enthält. Furthermore, it is preferred that in step a) 10 to 75% by weight, preferably 20 to 60% by weight, of at least one thermoplastic polymer, based on the total weight of the BD printing material to be produced, and/or in Step a) 10 to 60% by weight, preferably 20 to 50% by weight, of at least one photocatalyst, based on the total weight of the BD printing material to be produced, and/or in step b) 5 to 40% by weight %, preferably 10 to 30% by weight, particularly preferably 10 to 20% by weight, of the at least one layered silicate, based on the total weight of the 3D printing material to be produced.
Gemäß einer weiteren bevorzugten Variante des erfindungsgemäßen Verfah rens ist das mindestens eine thermoplastische Polymer ausgewählt aus der Gruppe bestehend aus Polyamid 6 (PA 6), Polyamid 66 (PA 66), Polyamid 12 (PA 12), Polyamid 4.6 (PA 4.6), Acrylnitril- Butadien-Styrolen (ABS), Polycarbo- naten (PC), Polyethylen (PE), Polypropylen (PP), Polyphenylensulfid (PPS), Po lyvinylchlorid (PVC), Acrylnitril-Styrol-Acrylaten, Polyurethanen, Epoxyharzen und Mischungen hiervon. According to a further preferred variant of the method according to the invention, the at least one thermoplastic polymer is selected from the group consisting of polyamide 6 (PA 6), polyamide 66 (PA 66), polyamide 12 (PA 12), polyamide 4.6 (PA 4.6), acrylonitrile - Butadiene-styrenes (ABS), polycarbonates (PC), polyethylene (PE), polypropylene (PP), polyphenylene sulfide (PPS), polyvinyl chloride (PVC), acrylonitrile-styrene acrylates, polyurethanes, epoxy resins and mixtures thereof.
Eine weitere bevorzugte Variante des erfindungsgemäßen Verfahrens ist dadurch gekennzeichnet, dass das Formgebungsverfahren in Schritt c) ausge wählt ist aus der Gruppe bestehend aus Extrusionsverfahren, Granulierverfah ren, Extrusionsverfahren, Schneidverfahren und Kombinationen hiervon. 3D- Druck-Filamente können mit einem Extrusionsverfahren und 3D-Druck-Granu- late mit einem Granulierverfahren hergestellt werden. 3D-Druckstangen kön nen hergestellt werden, indem zunächst ein Extrusionsverfahren durchgeführt wird und anschließend das hierbei erhaltene Material in einem Schneidverfah ren zugeschnitten wird. A further preferred variant of the method according to the invention is characterized in that the shaping method in step c) is selected from the group consisting of extrusion methods, granulating methods, extrusion methods, cutting methods and combinations thereof. 3D printing filaments can be produced with an extrusion process and 3D printing granules with a granulation process. 3D printed rods can be made by first performing an extrusion process and then the material obtained in this way is cut in a cutting process.
Vorzugsweise ist das erfindungsgemäße Verfahren zur Herstellung von 3D- Druck-Material ein Verfahren zur Herstellung von 3D-Druck-Material gemäß der vorliegenden Erfindung. The method according to the invention for producing 3D printed material is preferably a method for producing 3D printed material according to the present invention.
Die vorliegende Erfindung betrifft zudem ein 3D-Druck-Material, umfassend eine thermoplastische Matrix sowie einen in die Matrix eingebettetes Kompo- sitmaterial, welches mindestens einen Photokatalysator und mindestens ein Schichtsilicat enthält. The present invention also relates to a 3D printing material, comprising a thermoplastic matrix and a composite material embedded in the matrix, which contains at least one photocatalyst and at least one sheet silicate.
Unter 3D-Druck-Material wird ein Material verstanden, das direkt ohne wei tere Verarbeitung als Ausgangsmaterial für den 3D-Druck in einem 3D-Drucker verwendet werden kann, so dass mit dem 3D-Drucker mittels 3D-Druck Bau teile aus dem 3D-Druck-Material hergestellt werden können. Das 3D-Druck- Material ist somit (aufgrund seiner Zusammensetzung und seiner Form) für die direkte Verwendung in einem 3D-Drucker geeignet. Das 3D-Druck-Mate- rial kann beispielsweise ausgewählt sein aus der Gruppe bestehend aus 3D- Druck-Filamenten (bzw. Filamenten für den 3D-Druck), 3D-Druck-Granulat (bzw. Granulat für den 3D-Druck) und 3D-Druck-Stangen (bzw. stangenförmi gem Material für den 3D-Druck). Bei den 3D-Druck-Filamenten kann es sich um FFF-Filamente (Fused-Filament-Fabrication-Filamente) handeln. Das stan genförmige Material für den 3D-Druck kann wie die Filamente für den 3D- Druck (Endlos-Halbzeug) in einem Extrusionsprozess hergestellt werden, wo bei das Material hierbei nach der Extrusion in definierte Längen zugeschnitten werden kann, um das stangenförmige Material zu erhalten. 3D printing material is a material that can be used directly without further processing as the starting material for 3D printing in a 3D printer, so that the 3D printer can use 3D printing to produce components from the 3D Printing material can be produced. The 3D printing material is thus suitable (due to its composition and shape) for direct use in a 3D printer. The 3D printing material can, for example, be selected from the group consisting of 3D printing filaments (or filaments for 3D printing), 3D printing granules (or granules for 3D printing) and 3D -Print rods (or rod-shaped material for 3D printing). The 3D printing filaments can be FFF filaments (fused filament fabrication filaments). Like the filaments for 3D printing (continuous semi-finished product), the rod-shaped material for 3D printing can be produced in an extrusion process, where the material can be cut to defined lengths after extrusion in order to obtain the rod-shaped material .
Unter einer thermoplastischen Matrix wird eine Matrix verstanden, die min destens ein thermoplastisches Polymer enthält oder daraus besteht. A thermoplastic matrix is understood to mean a matrix that contains or consists of at least one thermoplastic polymer.
Aufgrund des Photokatalysator-Schichtsilicat-Komposits der (als Füllstoff) in das thermoplastische Polymer eingebettet ist, umfasst das erfindungsgemäße Druck-Material einen Photokatalysator-Schichtsilicat-Polymer-Komposit, wodurch das 3D-Druck-Material von sich aus eine sehr effektive selbstdekon- taminierende Wirkung aufweist. In der Folge weist auch ein aus dem 3D- Druck-Material mittels BD-Druck hergestelltes Bauteil oder Halbzeug von sich aus eine sehr effektive selbstdekontaminierende Wirkung auf. Das Bauteil muss somit nicht mehr mit einer zusätzlichen photokatalytischen bzw. anti bakteriell und/oder antiviral wirkenden Beschichtung versehen werden, um eine dekontaminierende Wirkung zu erreichen und einen Schutz vor Bakterien und Viren zu erreichen. Stattdessen weist das Bauteil auch ohne eine solche Beschichtung einen sehr effektiven Schutz vor Bakterien und Viren auf. Durch das Einsparen einer zusätzlichen Beschichtung des Bauteils kann dieses deut lich schneller und kostengünstiger hergestellt werden. Due to the photocatalyst layered silicate composite (as a filler) embedded in the thermoplastic polymer, the printing material according to the invention comprises a photocatalyst layered silicate polymer composite, whereby the 3D printing material itself has a very effective self-decontamination has effect. As a result, one from the 3D Printing material, a component or semi-finished product produced by BD printing has a very effective self-decontaminating effect. The component therefore no longer has to be provided with an additional photocatalytic or antibacterial and/or antiviral coating in order to achieve a decontamination effect and protection against bacteria and viruses. Instead, the component has very effective protection against bacteria and viruses even without such a coating. By saving on an additional coating of the component, it can be manufactured significantly faster and more cost-effectively.
Eine bevorzugte Ausführungsform des erfindungsgemäßen 3D-Druck-Materi- als zeichnet sich dadurch aus, dass der mindestens eine Photokatalysator ausgewählt ist aus der Gruppe bestehend aus T1O2, ZnO, SnC>2, WO3,A preferred embodiment of the 3D printing material according to the invention is characterized in that the at least one photocatalyst is selected from the group consisting of T1O2, ZnO, SnC>2, WO3,
Fe2C>3, Fe3Ü4, MnO, NiO und Mischungen hiervon, und/oder mit mindestens einem Metall dotiert ist, wobei das mindestens eine Me tall vorzugsweise ausgewählt ist aus der Gruppe bestehend aus Ag, Cu, Au, Pd, Pt, Rh, Cd und Mischungen hiervon. Fe2C>3, Fe3Ü4, MnO, NiO and mixtures thereof, and/or doped with at least one metal, the at least one metal preferably being selected from the group consisting of Ag, Cu, Au, Pd, Pt, Rh, Cd and mixtures thereof.
Eine weitere bevorzugte Ausführungsform des erfindungsgemäßen 3D-Druck- Materials ist dadurch gekennzeichnet, dass das mindestens eine Schichtsilicat ausgewählt ist aus der Gruppe bestehend aus Hectorit, Bentonit, Mont- morillonit, Muskovit, lllit, Kaolinit, Halloysit, Paligorskit, Vermikulit und Mi schungen hiervon, und/oder in Form von orientierten und/oder gekrümmten Lamellen vorliegt. Another preferred embodiment of the 3D printing material according to the invention is characterized in that the at least one sheet silicate is selected from the group consisting of hectorite, bentonite, montmorillonite, muscovite, lllite, kaolinite, halloysite, paligorskite, vermiculite and mixtures thereof , and/or in the form of oriented and/or curved lamellae.
Unter orientierten Lamellen können plane, parallele Lamellen verstanden werden. Prozessabhängig können sich diese Lamellen aber auch krümmen. Oriented lamellae can be understood to mean planar, parallel lamellae. Depending on the process, however, these lamellas can also curve.
In einer ganz besonders bevorzugten Ausführungsform des erfindungsgemä ßen 3D-Druck-Materials ist der mindestens eine Photokatalysator T1O2 und/oder ZnO, insbeson dere Ti02, ist der mindestens eine Photokatalysator mit Cu und/oder Ag, insbeson dere mit Cu, dotiert, und ist das mindestens eine Schichtsilicat ausgewählt aus der Gruppe beste hend aus Hectorit, Bentonit, Montmorillonit und Mischungen hiervon. In a very particularly preferred embodiment of the 3D printing material according to the invention, the at least one photocatalyst is T1O2 and/or ZnO, in particular TiO2, the at least one photocatalyst is doped with Cu and/or Ag, in particular with Cu, and the at least one layered silicate is selected from the group consisting of hectorite, bentonite, montmorillonite and mixtures thereof.
Bei dem mindestens einen thermoplastischen Polymer handelt es sich vor zugsweise um mindestens ein thermoplastisches Elastomer. The at least one thermoplastic polymer is preferably at least one thermoplastic elastomer.
Gemäß einer weiteren bevorzugten Ausführungsform des erfindungsgemäßen BD-Druck-Materials ist das mindestens eine thermoplastische Polymer ausge wählt aus der Gruppe bestehend aus Polyamid 6 (PA 6), Polyamid 66 (PA 66), Polyamid 12 (PA 12), Polyamid 4.6 (PA 4.6), Acrylnitril- Butadien-Styrolen (ABS), Polycarbonaten (PC), Polyethylen (PE), Polypropylen (PP), Polypheny- lensulfid (PPS), Polyvinylchlorid (PVC), Acrylnitril-Styrol-Acrylaten, Polyuretha nen, Epoxyharzen und Mischungen hiervon. According to a further preferred embodiment of the BD printing material according to the invention, the at least one thermoplastic polymer is selected from the group consisting of polyamide 6 (PA 6), polyamide 66 (PA 66), polyamide 12 (PA 12), polyamide 4.6 (PA 4.6), acrylonitrile butadiene styrenes (ABS), polycarbonates (PC), polyethylene (PE), polypropylene (PP), polyphenylene sulfide (PPS), polyvinyl chloride (PVC), acrylonitrile styrene acrylates, polyurethanes, epoxy resins and mixtures thereof.
Eine weitere bevorzugte Ausführungsform des erfindungsgemäßen BD-Druck- Materials zeichnet sich dadurch aus, dass das 3D-Druck-Material A further preferred embodiment of the BD printing material according to the invention is characterized in that the 3D printing material
10 bis 75 Gew.-%, bevorzugt 20 bis 60 Gew.-%, des mindestens einen ther moplastischen Polymers, bezogen auf das Gesamtgewicht des BD-Druck- Materials, und/oder 10 to 75% by weight, preferably 20 to 60% by weight, of the at least one thermoplastic polymer, based on the total weight of the BD printing material, and/or
10 bis 60 Gew.-%, bevorzugt 20 bis 50 Gew.-%, des mindestens einen Pho tokatalysators, bezogen auf das Gesamtgewicht des 3D-Druck-Materials, und/oder 10 to 60% by weight, preferably 20 to 50% by weight, of the at least one photocatalyst, based on the total weight of the 3D printing material, and/or
5 bis 40 Gew.-%, bevorzugt 10 bis 30 Gew.-%, besonders bevorzugt 10 bis 20 Gew.-%, des mindestens einen Schichtsilicats, bezogen auf das Gesamt gewicht des 3D-Druck-Materials, enthält. 5 to 40% by weight, preferably 10 to 30% by weight, particularly preferably 10 to 20% by weight, of the at least one layered silicate, based on the total weight of the 3D printing material.
Gemäß einer weiteren bevorzugten Ausführungsform des erfindungsgemäßen 3D-Druck-Materials liegt das 3D-Druck-Material als Granulat (bzw. als 3D- Druck-Granulat bzw. Granulat für den 3D-Druck), als Filament (bzw. als 3D- Druck-Filament bzw. Filament für den 3D-Druck) oder in Stangenform (bzw. als 3D-Druck-Stange bzw. stangenförmiges Material für den 3D-Druck) vor. Bei dem 3D-Druck-Filament kann es sich um ein FFF-Filament (Fused-Filament- Fabrication-Filamente) handeln. Eine weitere bevorzugte Ausführungsform des erfindungsgemäßen BD-Druck- Materials ist dadurch gekennzeichnet, dass das 3D-Druck-Material mit dem erfindungsgemäßen Verfahren zur Herstellung von 3D-Druck-Material her stellbar oder hergestellt ist. According to a further preferred embodiment of the 3D printing material according to the invention, the 3D printing material is in the form of granules (or 3D printing granules or granules for 3D printing), filaments (or 3D printing Filament or filament for 3D printing) or in rod form (or as 3D printing rod or rod-shaped material for 3D printing). The 3D printing filament can be an FFF filament (fused filament fabrication filament). A further preferred embodiment of the BD printing material according to the invention is characterized in that the 3D printing material can be produced or has been produced using the method according to the invention for producing 3D printing material.
Im Weiteren betrifft die vorliegende Erfindung auch die Verwendung des er findungsgemäßen 3D-Druck-Materials in Spritzgussverfahren, in Extrusions verfahren, in Walzverfahren, in Kalandrierverfahren, und/oder in 3D-Druck- Verfahren, bevorzugt 3D-Druck-Schichtbauverfahren. Furthermore, the present invention also relates to the use of the 3D printing material according to the invention in injection molding processes, in extrusion processes, in rolling processes, in calendering processes, and/or in 3D printing processes, preferably 3D printing layer construction processes.
Die vorliegende Erfindung betrifft zudem ein Verfahren zur Herstellung von Bauteilen, bei welchem 3D-Druck-Material gemäß dem erfindungsgemäßen Verfahren hergestellt wird und aus dem 3D-Druck-Material mittels 3D-Druck, vorzugsweise mittels additivem Schmelzschichtverfahren, mindestens ein Bauteil hergestellt wird. The present invention also relates to a method for producing components, in which 3D printing material is produced according to the method according to the invention and at least one component is produced from the 3D printing material by means of 3D printing, preferably by means of an additive fusion layer method.
Beim erfindungsgemäßen Verfahren zur Herstellung von Bauteilen wird somit a) aus mindestens einem Photokatalysator und mindestens einem Schichtsil icat ein Photokatalysator-Schichtsilicat-Komposit hergestellt, b) aus dem Photokatalysator-Schichtsilicat-Komposit und mindestens einem thermoplastischen Polymer ein Photokatalysator-Schichtsilicat-Polymer- Komposit hergestellt, c) der Photokatalysator-Schichtsilicat-Polymer-Komposit einem Formge bungsverfahren unterzogen, wodurch ein 3D-Druck-Material erhalten wird, und d) aus dem 3D-Druck-Material mittels 3D-Druck, vorzugsweise mittels additi vem Schmelzschichtverfahren, mindestens ein Bauteil hergestellt. In the method according to the invention for the production of components, a) a photocatalyst-layered silicate composite is produced from at least one photocatalyst and at least one layered silicate, b) a photocatalyst-layered silicate-polymer composite is produced from the photocatalyst-layered silicate composite and at least one thermoplastic polymer produced, c) the photocatalyst layered silicate polymer composite is subjected to a shaping process, whereby a 3D printed material is obtained, and d) from the 3D printed material by means of 3D printing, preferably by means of an additive melt layer method, at least one component manufactured.
Außerdem betrifft die vorliegende Erfindung auch ein Verfahren zur Herstel lung von Bauteilen, bei welchem ein erfindungsgemäßes 3D-Druck-Material oder ein 3D-Druck-Material, welches gemäß dem erfindungsgemäßen Verfah ren zur Herstellung von 3D-Druck-Material hergestellt wurde, bereitgestellt wird und aus dem 3D-Druck-Material mittels 3D-Druck, vorzugsweise mittels additivem Schmelzschichtverfahren, mindestens ein Bauteil hergestellt wird. Die vorliegende Erfindung betrifft ferner ein Bauteil, umfassend eine thermo plastische Matrix sowie ein in die Matrix eingebettetes Kompositmaterial, welches mindestens einen Photokatalysator und mindestens ein Schichtsilicat enthält, wobei das Bauteil gemäß dem (bzw. einem) erfindungsgemäßen Ver fahren zur Herstellung von Bauteilen herstellbar oder hergestellt ist. In addition, the present invention also relates to a method for producing components, in which a 3D printing material according to the invention or a 3D printing material that has been produced according to the method according to the invention for producing 3D printing material is provided and at least one component is produced from the 3D printing material by means of 3D printing, preferably by means of an additive fusion layer process. The present invention further relates to a component comprising a thermoplastic matrix and a composite material embedded in the matrix, which contains at least one photocatalyst and at least one layered silicate, wherein the component can be produced according to the (or a) method according to the invention for the production of components or is made.
Bei dem erfindungsgemäßen Bauteil kann es sich um ein FFF-Bauteil (Fused- Filament-Fabrication-Bauteil) handeln. The component according to the invention can be an FFF component (fused filament fabrication component).
Zudem betrifft die vorliegende Erfindung auch die Verwendung des erfin dungsgemäßen Bauteils im Bereich der Medizintechnik, des Life Science, der Energie- und Umwelttechnik, der Automobil- und Luftfahrtindustrie. In addition, the present invention also relates to the use of the component according to the invention in the field of medical technology, life science, energy and environmental technology, the automotive and aviation industries.
Der erfindungsgemäß verwendete Materialansatz kann durch elementspezifi sche Materialanalysen (EDX) nachgewiesen werden. Die beschriebenen Kom posite können zudem durch Transmissionselektronenspektroskopie (TEM) in Verbindung mit EDX exakt bestimmt werden. Weitere Analysemethoden sind durch Röntgendiffraktometrie (XRD) gegeben. The material approach used according to the invention can be verified by element-specific material analyzes (EDX). The composites described can also be precisely determined by transmission electron spectroscopy (TEM) in conjunction with EDX. Further analysis methods are given by X-ray diffractometry (XRD).
Anhand der nachfolgenden Figuren und Beispiele soll die vorliegende Erfin dung näher erläutert werden, ohne diese auf die hier gezeigten spezifischen Ausführungsformen und Parameter zu beschränken. The present inventions are to be explained in more detail on the basis of the following figures and examples, without restricting them to the specific embodiments and parameters shown here.
Fig. 1 zeigt eine schematische Darstellung einer beispielhaften Ausführungs form des in Schritt a) des erfindungsgemäßen Verfahrens hergestellten Pho- tokatalysator-Schichtsilicat-Komposits. Der Komposit umfasst einen Photoka talysator 1 (z.B. T1O2 oder ZnO), welcher mit einem Metall 2 (z.B. Cu oder Ag) dotiert ist, sowie ein Schichtsilicat 3 (z.B. Hectorit, Bentonit oder Montmorillo- nit). Das Schichtsilicat 3 kann in Form von orientierten und/oder gekrümmten Lamellen vorliegen. 1 shows a schematic representation of an exemplary embodiment of the photocatalyst-layered silicate composite produced in step a) of the process according to the invention. The composite comprises a photocatalyst 1 (e.g. T1O2 or ZnO), which is doped with a metal 2 (e.g. Cu or Ag), and a layered silicate 3 (e.g. hectorite, bentonite or montmorillonite). The layered silicate 3 can be in the form of oriented and/or curved lamellae.
Fig. 2 zeigt eine schematische Darstellung einer beispielhaften Ausführungs form des im erfindungsgemäßen Verfahren hergestellten Photokatalysator- Schichtsilicat-Polymer-Komposits. Der Komposit umfasst einen Photokatalysa tor 1 (z.B. T1O2 oder ZnO), welcher mit einem Metall 2 (z.B. Cu oder Ag) dotiert ist, ein Schichtsilicat 3 (z.B. Hectorit, Bentonit oder Montmorillonit), sowie eine thermoplastische Polymermatrix 4. Der mit dem Metall 2 dotierte Pho tokatalysator 1 und das Schichtsilicat S bzw. der Photokatalysator-Schichtsili- cat-Komposit sind in die thermoplastische Polymermatrix 4 eingebettet. Das Schichtsilicat S kann in Form von orientierten und/oder gekrümmten Lamellen vorliegen. 2 shows a schematic representation of an exemplary embodiment of the photocatalyst-layered silicate-polymer composite produced in the process according to the invention. The composite comprises a photocatalyst 1 (eg T1O2 or ZnO), which is doped with a metal 2 (eg Cu or Ag), a sheet silicate 3 (eg hectorite, bentonite or montmorillonite), as well as a thermoplastic polymer matrix 4. The photocatalyst 1 doped with the metal 2 and the sheet silicate S or the photocatalyst sheet silicate composite are embedded in the thermoplastic polymer matrix 4. The layered silicate S can be in the form of oriented and/or curved lamellae.
Ausführungsbeispiel 1: Wirkung gegen Bakterien Example 1: Action against bacteria
In einem ersten Schritt wird ein Photokatalysator-Schichtsilicat-Komposit wie folgt hergestellt: 80 ml H2O werden mit 20 ml Propanol vermischt. Hierin wird 1 g einer ca. 40% nanoskaligen Cu-Nanopartikeldispersion gegeben und er neut vermischt. In diese Mischung werden 5 g Bentonit gegeben und der An satz dann 18 h mit einem Magnetrührer dispergiert. Im Anschluss werden 20 g T1O2 zugegeben und die erhaltene Mischung für eine Stunde dispergiert. Der Ansatz wird 12 h bei 60 °C getrocknet. Der Ansatz wird anschließend 30 min in einer Pulver-Kugelmühle gemahlen und anschließend 1 h bei 200 °C kalziniert. In a first step, a photocatalyst layered silicate composite is produced as follows: 80 ml H2O are mixed with 20 ml propanol. 1 g of an approx. 40% nanoscale Cu nanoparticle dispersion is added to this and mixed again. 5 g of bentonite are added to this mixture and the mixture is then dispersed with a magnetic stirrer for 18 hours. Then 20 g T1O2 are added and the mixture obtained is dispersed for one hour. The batch is dried at 60° C. for 12 hours. The mixture is then ground in a powder ball mill for 30 minutes and then calcined at 200° C. for 1 hour.
In einem zweiten Schritt werden 30 g des so hergestellten Photokatalysator- Schichtsilicat-Komposits und 30 g Pebax® (thermoplastisches Elastomer (TPE- A)) in einem gleichsinnig drehenden, 5-Zonen-Doppelschneckencompounder bei einer Temperatur von T = 225 °C zu einem Granulat kompoundiert. In a second step, 30 g of the photocatalyst layered silicate composite produced in this way and 30 g Pebax ® (thermoplastic elastomer (TPE-A)) are combined in a co-rotating, 5-zone twin-screw compounder at a temperature of T = 225 °C Granules compounded.
In einem dritten Schritt werden aus dem Granulat über einen Einschnecken- Extruder FFF-Filamente bei einer Temperatur von 205 °C mit einem Durch messer von 1,75 mm extrudiert. In a third step, FFF filaments with a diameter of 1.75 mm are extruded from the granulate using a single-screw extruder at a temperature of 205.degree.
In einem vierten Schritt werden mittels FFF-Druck Testkörper von 2,5 cm x 2,5 cm gedruckt. In a fourth step, test specimens measuring 2.5 cm x 2.5 cm are printed using FFF printing.
In einem fünften Schritt werden antibakterielle Untersuchungen durchge führt. Hierzu werden drei Testproben mit 106 CFU/mL des Bakteriums „Escherichia coli" beaufschlagt. Als erste Testprobe „PEBAX-Katalysator, gedruckt" wird eine Petrischale verwendet, in welcher einer der im vierten Schritt hergestellten Testkörper platziert ist. Als zweite Testprobe „PEBAX- Katalysator, gepresst" wird eine Petrischale verwendet, in welcher ein Testkörper platziert ist, der durch Heißverpressen der im dritten Schritt hergestellten Filamente hergestellt wurde. Bei der dritten Testprobe „Kontrollprobe" handelt es sich um eine Petrischale ohne Testkörper, die als Kontrolle verwendet wird. In a fifth step, antibacterial tests are carried out. For this purpose, three test samples are exposed to 10 6 CFU/mL of the "Escherichia coli" bacterium. A Petri dish, in which one of the test bodies produced in the fourth step is placed, is used as the first test sample "PEBAX catalyst, printed". A Petri dish is used as the second test sample "PEBAX catalyst, pressed", in which a Test body is placed, which was produced by hot pressing the filaments produced in the third step. The third test sample "control sample" is a Petri dish without a test piece, which is used as a control.
Die drei mit 106 CFU/mL des Bakteriums „Escherichia coli" beaufschlagten Testproben werden mit einer Lichtquelle, welche das Spektrum des Sonnenlichts aufweist, bestrahlt. Vor der Bestrahlung (0 h) sowie 1 h bzw. 2 h nach der Bestrahlung wird die Bakterien-Konzentration gemessen. Die Messung erfolgt über eine optische Bestimmung, wobei die Bakterien mit einem „Sorcerer Colony Counter" ausgezählt werden. The three test samples treated with 10 6 CFU/mL of the bacterium "Escherichia coli" are irradiated with a light source that has the spectrum of sunlight. Before the irradiation (0 h) and 1 h or 2 h after the irradiation, the bacteria -Concentration measured. The measurement is carried out via an optical determination, whereby the bacteria are counted with a "Sorcerer Colony Counter".
Die Ergebnisse der Messungen sind in Fig. 3 als Diagramm dargestellt. Es ist klar zu erkennen, dass bei den Proben „PEBAX-Katalysator, gedruckt" und „PEBAX-Katalysator, gepresst" die Bakterienkonzentration bei voranschreiten der Bestrahlung mit der Lichtquelle abnimmt. Schon nach einer Stunde hat die Bakterienkonzentration bei beiden Proben so stark abgenommen, dass keine „Escherichia coli"- Bakterien mehr nachweisbar sind. Auch nach zwei Stunden sind bei beiden Proben keine „Escherichia coli"- Bakterien nachweisbar. Bei der Kontrollprobe bleibt die Bakterien-Konzentration hingegen über die glei che Zeit nahezu unverändert hoch. The results of the measurements are shown in Fig. 3 as a diagram. It can be clearly seen that in the samples "PEBAX catalyst, printed" and "PEBAX catalyst, pressed" the bacterial concentration decreases as the irradiation with the light source progresses. After just one hour, the bacterial concentration in both samples had dropped so much that "Escherichia coli" bacteria were no longer detectable. Even after two hours, no "Escherichia coli" bacteria were detectable in either sample. In the control sample, on the other hand, the bacterial concentration remained almost unchanged over the same period.
Die vorgenommenen Messungen weisen somit einen eindeutigen Abbau von Bakterien auf der Probe „PEBAX-Katalysator, gedruckt" und der Probe „PEBAX-Katalysator, gepresst" bei Einstrahlung von Licht nach. The measurements taken thus demonstrate a clear breakdown of bacteria on the "PEBAX catalyst, printed" sample and the "PEBAX catalyst, pressed" sample when exposed to light.
Dieses Ergebnis wird auch durch Fig. 4 verdeutlicht, welches fotographische Aufnahmen der Testproben vor der Bestrahlung (0 h) sowie 1 h bzw. 2 h nach der Bestrahlung zeigt. Es ist zu erkennen, dass bereits nach 1 Stunde ein deut licher Abbau der Bakterien auf den Testoberflächen der Probe „PEBAX- Katalysator, gedruckt" und der Probe „PEBAX-Katalysator, gepresst" stattge funden hat. Zweites Ausführungsbeispiel: Wirkung gegen Viren This result is also illustrated by FIG. 4, which shows photographs of the test samples before irradiation (0 h) and 1 h and 2 h after irradiation. It can be seen that after just 1 hour there was a significant degradation of the bacteria on the test surfaces of the “PEBAX catalyst, printed” sample and the “PEBAX catalyst, pressed” sample. Second exemplary embodiment: action against viruses
In einem ersten Schritt wird ein Photokatalysator-Schichtsilicat-Komposit wie folgt hergestellt: 80 ml H2O werden mit 20 ml Propanol vermischt. Hierin wird 1 g einer ca. 40% nanoskaligen Cu-Nanopartikeldispersion gegeben und er neut vermischt. In diese Mischung werden 5 g Bentonit gegeben und der An satz dann 18 h mit einem Magnetrührer dispergiert. Im Anschluss werden 20 g T1O2 zugegeben und die erhaltene Mischung für eine Stunde dispergiert. Der Ansatz wird 12 h bei 60 °C getrocknet. Der Ansatz wird anschließend 30 min in einer Pulver-Kugelmühle gemahlen und anschließend 1 h bei 200 °C kalziniert. In a first step, a photocatalyst layered silicate composite is produced as follows: 80 ml H2O are mixed with 20 ml propanol. 1 g of an approx. 40% nanoscale Cu nanoparticle dispersion is added to this and mixed again. 5 g of bentonite are added to this mixture and the mixture is then dispersed with a magnetic stirrer for 18 hours. Then 20 g T1O2 are added and the mixture obtained is dispersed for one hour. The batch is dried at 60° C. for 12 hours. The mixture is then ground in a powder ball mill for 30 minutes and then calcined at 200° C. for 1 hour.
In einem zweiten Schritt werden 30 g des so hergestellten Photokatalysator- Schichtsilicat-Komposits und 30 g Pebax® (thermoplastisches Elastomer (TPE- A)) in einem gleichsinnig drehenden, 5-Zonen-Doppelschneckencompounder bei einer Temperatur von T = 225 °C zu einem Granulat kompoundiert. In a second step, 30 g of the photocatalyst layered silicate composite produced in this way and 30 g Pebax ® (thermoplastic elastomer (TPE-A)) are combined in a co-rotating, 5-zone twin-screw compounder at a temperature of T = 225 °C Granules compounded.
In einem dritten Schritt werden aus dem Granulat über einen Einschnecken- Extruder FFF-Filamente bei einer Temperatur von 205 °C mit einem Durch messer von 1,75 mm extrudiert. In a third step, FFF filaments with a diameter of 1.75 mm are extruded from the granulate using a single-screw extruder at a temperature of 205.degree.
In einem vierten Schritt werden mittels FFF-Druck Testkörper von 5 cm x 5 cm gedruckt. In a fourth step, test specimens measuring 5 cm x 5 cm are printed using FFF printing.
In einem fünften Schritt werden antivirale Untersuchungen durchgeführt. Hierzu werden vier Testproben hergestellt, indem vier der im vierten Schritt hergestellten Testkörper der Geometrie 5 cm x 5 cm mit 108 Viren/mL des Herpes-Virus „pseudirobies virus (PVR)" beaufschlagt werden. In a fifth step, antiviral tests are carried out. For this purpose, four test samples are produced by applying 10 8 viruses/mL of the herpes virus “pseudirobies virus (PVR)” to four of the test bodies produced in the fourth step with a geometry of 5 cm×5 cm.
Zwei der beaufschlagten Testproben werden mit einer Lichtquelle, welche das Spektrum des Sonnenlichts aufweist bestrahlt, zwei weitere abgedunkelt.Two of the exposed test specimens are irradiated with a light source that has the spectrum of sunlight, two others are darkened.
Alle vier Proben werden bis zum sog. Trocknungspunkt (Desiccation Point (DP)) getrocknet. All four samples are dried to the so-called Desiccation Point (DP)).
Eine der beiden mit der Lichtquelle bestrahlten Proben sowie eine der beiden abgedunkelten Proben werden direkt nach der Tocknung mit einer Zellkultur belegt. Die beiden anderen Proben werden erst 30 min nach derTrocknung mit einer Zellkulutur belegt. Für das Belegen mit der Zellkultur werden jeweils eine Nährlösung von 1,000 mI „Dulbecco's Modified Eagle's Medium" (DMEM) sowie „PK-15" Zellkulturen auf die Proben gegeben. One of the two samples irradiated with the light source and one of the two darkened samples are covered with a cell culture immediately after drying. The other two samples are only 30 min after drying coated with a cell culture. For covering with the cell culture, a nutrient solution of 1.000 ml "Dulbecco's Modified Eagle's Medium" (DMEM) and "PK-15" cell cultures are added to the samples.
Nach jeweils 72 Stunden wird die Konzentration infizierter Zellen optisch be stimmt, um den TCID50 (Median Tissue Culture Infectious Dose)-Wert zu er mitteln. Die Messung erfolgt über eine optische Bestimmung, wobei die Zellen mit einem „Sorcerer Colony Counter" ausgezählt werden. After every 72 hours, the concentration of infected cells is determined optically in order to determine the TCID50 (median tissue culture infected dose) value. The measurement takes place via an optical determination, with the cells being counted with a "Sorcerer Colony Counter".
Die Ergebnisse der Messungen sind in Fig. 5 als Diagramm dargestellt. Es ist klar zu erkennen, dass die Viruskonzentration nach Bestrahlung mit der Licht quelle abnimmt. So weisen beide bestrahlten Proben eine deutlich geringere Viruskonzentration auf als die beiden abgedunkelten Proben. Bei der mit der Lichtquelle bestrahlten Probe, die erst BO min später (bzw. 30 min nach der Trocknung) mit der Zellkultur belegt wurde, sind gar keine Viren bzw. geschädigten Zellen mehr nachweisbar. Bei den abgedunkelten Proben bleibt die Viren-Konzentration hingegen über die gleiche Zeit nahezu unverändert. Somit ist klar belegt, dass der Viren-Abbau durch die Bestrahlung mit der Lichtquelle verursacht wird und nicht durch die bloße Trocknung und Warte zeit. The results of the measurements are shown in Fig. 5 as a diagram. It can be clearly seen that the virus concentration decreases after irradiation with the light source. Both irradiated samples have a significantly lower virus concentration than the two darkened samples. Viruses or damaged cells are no longer detectable in the sample irradiated with the light source, which was covered with the cell culture only 10 minutes later (or 30 minutes after drying). In the darkened samples, on the other hand, the virus concentration remained almost unchanged over the same period. It is thus clearly proven that the virus breakdown is caused by the irradiation with the light source and not by the mere drying and waiting time.
Zusätzlich sind in Fig. 6 Ausschnitte von bei Messung erhaltenen und bei der Auszählung verwendeten mikroskopischen Aufnahmen dargestellt. Im linken Teil (A) ist ein Ausschnitt einer mikroskopischen Aufnahme der Probe darge stellt, die mit Licht bestrahlt und 30 min nach derTrocknung mit derZellkultur belegt wurde. Diese Probe ist Viren-frei und weist lebende Zellen auf. Im rech ten Teil (B) ist ein Ausschnitt einer mikroskopischen Aufnahme der Probe dargestellt, die abgedunkelt und 30 min nach der Trocknung mit der Zellkultur belegt wurde. Diese Probe weist infizierte und vom Virus getötete Zellen (runde Spots) auf. In addition, sections of microscopic images obtained during measurement and used in counting are shown in FIG. The left part (A) shows a section of a microscopic image of the sample that was irradiated with light and covered with the cell culture 30 min after drying. This sample is virus-free and has living cells. The right part (B) shows a section of a microscopic image of the sample, which was darkened and covered with the cell culture 30 minutes after drying. This sample has infected and virus killed cells (round spots).
Die vorgenommenen Messungen weisen somit einen eindeutigen Abbau von Viren bei Einstrahlung von Licht nach. The measurements taken thus demonstrate a clear breakdown of viruses when exposed to light.

Claims

Patentansprüche patent claims
1. Verfahren zur Herstellung von BD-Druck-Material, bei welchem a) aus mindestens einem Photokatalysator und mindestens einem Schichtsilicat ein Photokatalysator-Schichtsilicat-Komposit herge stellt wird, b) aus dem Photokatalysator-Schichtsilicat-Komposit und mindestens einem thermoplastischen Polymer ein Photokatalysator-Schichtsil- icat-Polymer-Komposit hergestellt wird, und c) der Photokatalysator-Schichtsilicat-Polymer-Komposit einem Formgebungsverfahren unterzogen wird, wodurch ein BD-Druck- Material erhalten wird. 1. A method for producing BD printing material, in which a) a photocatalyst-layered silicate composite is produced from at least one photocatalyst and at least one layered silicate, b) a photocatalyst is produced from the photocatalyst-layered silicate composite and at least one thermoplastic polymer -Layered silicate polymer composite is produced, and c) the photocatalyst layered silicate polymer composite is subjected to a shaping process, whereby a BD printing material is obtained.
2. Verfahren nach dem vorhergehenden Anspruch, dadurch gekennzeich net, dass der mindestens eine Photokatalysator ausgewählt ist aus der Gruppe bestehend aus T1O2, ZnO, SnC>2,2. The method according to the preceding claim, characterized in that the at least one photocatalyst is selected from the group consisting of T1O2, ZnO, SnC>2,
WO3, Fe2Ü3, Fe3Ü4, MnO, NiO und Mischungen hiervon, und/oder mit mindestens einem Metall dotiert ist oder während Schritt a) mit mindestens einem Metall dotiert wird, wobei das mindestens eine Metall vorzugsweise ausgewählt ist aus der Gruppe bestehend aus Ag, Cu, Au, Pd, Pt, Rh, Cd und Mischungen hiervon. WO 3 , Fe 2 Ü 3 , Fe 3 Ü 4 , MnO, NiO and mixtures thereof, and/or is doped with at least one metal or is doped with at least one metal during step a), the at least one metal preferably being selected from the group consisting of Ag, Cu, Au, Pd, Pt, Rh, Cd and mixtures thereof.
3. Verfahren nach einem der vorhergehenden Ansprüche, dadurch ge kennzeichnet, dass das mindestens eine Schichtsilicat ausgewählt ist aus der Gruppe bestehend aus Hectorit, Bentonit, Montmorillonit, Muskovit, lllit, Kaolinit, Halloysit, Paligorskit, Vermikulit und Mischun gen hiervon. 3. The method according to any one of the preceding claims, characterized in that the at least one sheet silicate is selected from the group consisting of hectorite, bentonite, montmorillonite, muscovite, lllite, kaolinite, halloysite, paligorskite, vermiculite and mixtures thereof.
4. Verfahren nach einem der vorhergehenden Ansprüche, dadurch ge kennzeichnet, dass bei der Herstellung des Photokatalysator-Schichtsil- icat-Komposits in Schritt a) das Gewichtsverhältnis von dem mindestens einen Photokatalysa tor zu dem mindestens einen Schichtsilicat im Bereich von 1:1 bis 10:1 liegt, und/oder der mindestens eine Photokatalysator in das mindestens eine Schichtsilicat interkalliert wird und/oder auf das mindestens eine Schichtsilicat angelagert wird. 4. The method according to any one of the preceding claims, characterized in that in the production of the photocatalyst sheet silicate composite in step a) the weight ratio of the at least one photocatalyst to the at least one layered silicate is in the range from 1:1 to 10:1, and/or the at least one photocatalyst is intercalated into the at least one layered silicate and/or is added onto the at least one layered silicate.
5. Verfahren nach einem der vorhergehenden Ansprüche, dadurch ge kennzeichnet, dass bei der Herstellung des Photokatalysator-Schichtsil- icat-Polymer-Komposits in Schritt b) das Gewichtsverhältnis von dem Photokatalysator-Schichtsilicat- Komposit zu dem mindestens einen thermoplastischen Polymer im Bereich von 1:10 bis 2:1 liegt, und/oder eine Compoundierung des Photokatalysator-Schichtsilicat-Kompo- sits mit dem mindestens einen thermoplastischen Polymer erfolgt. 5. The method according to any one of the preceding claims, characterized in that in the production of the photocatalyst layered silicate polymer composite in step b) the weight ratio of the photocatalyst layered silicate composite to the at least one thermoplastic polymer is in the range of 1 :10 to 2:1, and/or the photocatalyst layered silicate composite is compounded with the at least one thermoplastic polymer.
6. Verfahren nach einem der vorhergehenden Ansprüche, dadurch ge kennzeichnet, dass das mindestens eine thermoplastische Polymer ausgewählt ist aus der Gruppe bestehend aus Polyamid 6 (PA 6), Poly amid 66 (PA 66), Polyamid 12 (PA 12), Polyamid 4.6 (PA 4.6), Acryl nitril- Butadien-Styrolen (ABS), Polycarbonaten (PC), Polyethylen (PE), Polypropylen (PP), Polyphenylensulfid (PPS), Polyvinylchlorid (PVC), Ac- rylnitril-Styrol-Acrylaten, Polyurethanen, Epoxyharzen und Mischungen hiervon. 6. The method according to any one of the preceding claims, characterized in that the at least one thermoplastic polymer is selected from the group consisting of polyamide 6 (PA 6), polyamide 66 (PA 66), polyamide 12 (PA 12), polyamide 4.6 (PA 4.6), acrylonitrile butadiene styrene (ABS), polycarbonate (PC), polyethylene (PE), polypropylene (PP), polyphenylene sulfide (PPS), polyvinyl chloride (PVC), acrylonitrile styrene acrylate, polyurethane, epoxy resins and mixtures thereof.
7. Verfahren nach einem der vorhergehenden Ansprüche, dadurch ge kennzeichnet, dass das Formgebungsverfahren in Schritt c) ausgewählt ist aus der Gruppe bestehend aus Extrusionsverfahren, Granulierver fahren, Schneidverfahren und Kombinationen hiervon. 7. The method according to any one of the preceding claims, characterized in that the shaping process in step c) is selected from the group consisting of extrusion processes, granulation processes, cutting processes and combinations thereof.
8. BD-Druck-Material, umfassend eine thermoplastische Matrix sowie ei nen in die Matrix eingebettetes Kompositmaterial, welches mindes tens einen Photokatalysator und mindestens ein Schichtsilicat enthält. 8. BD printing material comprising a thermoplastic matrix and a composite material embedded in the matrix, which contains at least one photocatalyst and at least one sheet silicate.
9. BD-Druck-Material nach Anspruch 8, dadurch gekennzeichnet, dass der mindestens eine Photokatalysator ausgewählt ist aus der Gruppe bestehend aus T1O2, ZnO, SnC>2,9. BD printing material according to claim 8, characterized in that the at least one photocatalyst is selected from the group consisting of T1O2, ZnO, SnC>2,
WO3, Fe2Ü3, Fe3Ü4, MnO, NiO und Mischungen hiervon, und/oder mit mindestens einem Metall dotiert ist, wobei das mindestens eine Metall vorzugsweise ausgewählt ist aus der Gruppe bestehend aus Ag, Cu, Au, Pd, Pt, Rh, Cd und Mischungen hiervon. WO3, Fe2Ü3, Fe3Ü4, MnO, NiO and mixtures thereof, and/or doped with at least one metal, the at least one metal preferably being selected from the group consisting of Ag, Cu, Au, Pd, Pt, Rh, Cd and mixtures thereof.
10. 3D-Druck-Material nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass das mindestens eine Schichtsilicat ausgewählt ist aus der Gruppe bestehend aus Hectorit, Bentonit, Montmorillonit, Muskovit, lllit, Kaolinit, Halloysit, Paligorskit, Ver- mikulit und Mischungen hiervon, und/oder in Form von orientierten und/oder gekrümmten Lamellen vorliegt. 10. 3D printing material according to claim 8 or 9, characterized in that the at least one sheet silicate is selected from the group consisting of hectorite, bentonite, montmorillonite, muscovite, lllite, kaolinite, halloysite, paligorskite, vermiculite and mixtures thereof , and/or in the form of oriented and/or curved lamellae.
11. 3D-Druck-Material nach einem der Ansprüche 8 bis 10, dadurch ge kennzeichnet, dass das mindestens eine thermoplastische Polymer ausgewählt ist aus der Gruppe bestehend aus Polyamid 6 (PA 6), Poly amid 66 (PA 66), Polyamid 12 (PA 12), Polyamid 4.6 (PA 4.6), Acryl nitril- Butadien-Styrolen (ABS), Polycarbonaten (PC), Polyethylen (PE), Polypropylen (PP), Polyphenylensulfid (PPS), Polyvinylchlorid (PVC), Ac- rylnitril-Styrol-Acrylaten, Polyurethanen, Epoxyharzen und Mischungen hiervon. 11. 3D printing material according to any one of claims 8 to 10, characterized in that the at least one thermoplastic polymer is selected from the group consisting of polyamide 6 (PA 6), polyamide 66 (PA 66), polyamide 12 ( PA 12), polyamide 4.6 (PA 4.6), acrylonitrile butadiene styrene (ABS), polycarbonate (PC), polyethylene (PE), polypropylene (PP), polyphenylene sulfide (PPS), polyvinyl chloride (PVC), acrylonitrile styrene acrylates, polyurethanes, epoxy resins and mixtures thereof.
12. 3D-Druck-Material nach einem der Ansprüche 8 bis 11, dadurch ge kennzeichnet, dass das 3D-Druck-Material 12. 3D printing material according to any one of claims 8 to 11, characterized in that the 3D printing material
10 bis 75 Gew.-%, bevorzugt 20 bis 60 Gew.-%, des mindestens ei nen thermoplastischen Polymers, bezogen auf das Gesamtgewicht des 3D-Druck-Materials, und/oder 10 to 75% by weight, preferably 20 to 60% by weight, of the at least one thermoplastic polymer, based on the total weight of the 3D printing material, and/or
10 bis 60 Gew.-%, bevorzugt 20 bis 50 Gew.-%, des mindestens ei nen Photokatalysators, bezogen auf das Gesamtgewicht des 3D- Druck-Materials, und/oder 5 bis 40 Gew.-%, bevorzugt 10 bis 20 Gew.-%, des mindestens ei nen Schichtsilicats, bezogen auf das Gesamtgewicht des 3D-Druck- Materials, enthält. 10 to 60% by weight, preferably 20 to 50% by weight, of the at least one photocatalyst, based on the total weight of the 3D printing material, and/or 5 to 40% by weight, preferably 10 to 20% by weight, of the at least one sheet silicate, based on the total weight of the 3D printing material.
13. 3D-Druck-Material nach einem der Ansprüche 8 bis 12, dadurch ge kennzeichnet, dass das 3D-Druck-Material als Granulat, als Filament o- der in Stangenform vorliegt. 13. 3D printing material according to any one of claims 8 to 12, characterized in that the 3D printing material is present as granules, as a filament or in rod form.
14. 3D-Druck-Material nach einem der Ansprüche 8 bis 13, dadurch ge kennzeichnet, dass das 3D-Druck-Material mit einem Verfahren nach einem der Ansprüche 1 bis 7 herstellbar oder hergestellt ist. 14. 3D printing material according to any one of claims 8 to 13, characterized in that the 3D printing material can be produced or produced using a method according to any one of claims 1 to 7.
15. Verfahren zur Herstellung von Bauteilen, bei welchem 3D-Druck-Mate- rial gemäß dem Verfahren nach einem der Ansprüche 1 bis 7 herge stellt wird und aus dem 3D-Druck-Material mittels 3D-Druck, vorzugs weise mittels additivem Schmelzschichtverfahren, mindestens ein Bau teil hergestellt wird. 15. A method for producing components, in which 3D printing material is produced according to the method according to any one of claims 1 to 7 and from the 3D printing material by means of 3D printing, preferably by means of an additive melt layer process, at least a component is manufactured.
16. Bauteil, umfassend eine thermoplastische Matrix sowie ein in die Mat rix eingebettetes Kompositmaterial, welches mindestens einen Pho tokatalysator und mindestens ein Schichtsilicat enthält, wobei das Bau teil gemäß dem Verfahren nach Anspruch 15 herstellbar oder herge stellt ist. 16. Component comprising a thermoplastic matrix and a composite material embedded in the matrix, which contains at least one photocatalyst and at least one sheet silicate, wherein the component can be produced or produced according to the method of claim 15.
EP22726732.5A 2021-05-04 2022-05-02 Method for producing 3d printing material and components made therefrom, and 3d printing material and component produced by the method Pending EP4334390A1 (en)

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