Phenolic resin method
The invention relates to a method, a device, a binder system, and a material system for producing components using layering technology, wherein the temperature in the building space and/or in the applied material is set to at least 70° C. and maintained for at least 2 hours. Areas on which binder has been selectively applied, solidify and form the component.
1. A method for the layered construction of components, wherein a particulate material is applied onto a construction area in a construction space layer by layer with a layer thickness, a binder is selectively applied, a temperature in the construction space or/and in the particulate material applied is adjusted to at least 80° C., and the steps of material application and binder application are repeated until a desired component is obtained, wherein the temperature is maintained for at least 2 hours, with the areas onto which the binder was selectively applied solidifying and forming the components.
2. The method of claim 1 , wherein the binder used is a binder system comprising:
i) one or more monomers,
ii) one or more oligomers or polymers, and
iii) a solvent.
3. The method of claim 2 , wherein the solvent is an aqueous or alcoholic solvent.
4. The method of claim 1 , wherein the component thus obtained is subjected to further processing steps.
5. The method of claim 1 , wherein the temperature is adjusted to 80 to 150° C.
6. The method of claim 5 , wherein a substantially homogeneous temperature is adjusted and maintained in an area of the applied particulate material.
7. The method of claim 6 , wherein the temperature is maintained for 3 to 10 hours.
8. The method of claim 7 , wherein the particulate material is a plastic material, a sand, a ceramic material or a metal.
9. The method of claim 8 , wherein the particulate material has an average grain size of at least 8 μm.
10. The method of claim 9 , wherein the layer thickness is 50 to 800 μm.
11. The method of claim 1 , wherein the particulate material consists of particles.
12. A method for the layered construction of components, wherein a particulate material consisting of particles is applied onto a construction area in a construction space layer by layer with a layer thickness, a binder is selectively applied, the temperature in the construction space or/and in the particulate material applied is adjusted to a desired temperature, and the steps of material application and binder application are repeated until a desired component is obtained, wherein the temperature in the construction space or in the material applied is adjusted to at least 70° C. and maintained for at least 2 hours, with the areas onto which the binder was selectively applied solidifying and forming the components.
13. The method of claim 12 , wherein the binder used is a binder system comprising:
i) one or more monomers,
ii) one or more oligomers or polymers, and
iii) a solvent.
14. The method of claim 12 , wherein
a homogeneous temperature is adjusted and maintained in an area of the applied particulate material; the homogenous temperature is maintained for 3 to 10 hours;
the particulate material has an average grain size of at least 8 μm,
the layer thickness is 50 to 800 μm; and
the binder includes an aqueous solvent.
15. The method of claim 12 , wherein the particulate material is a plastic material.
16. The method of claim 12 , wherein the particulate material is a sand, a ceramic material or a metal.
17. The method of claim 12 , wherein the binder includes a phenol-formaldehyde co-condensate having below 5% residual phenol and below 0.3% residual formaldehyde.