When we hear about polyurethane involuntarily associate it with foam, used for insulation, stuffing for mattresses. But this week, German manufacturer of FFF 3D printers by German RepRap, as well as the manufacturer of epoxy and polyurethane resins, ebalta Kunststoff introduced a new consumable on the basis of the PU.
Innovative materials and techniques
New material for three-dimensional printing is not a foam, but can be actively used for the production of liquid additives. Prichet, it uses the innovative Liquid technology Additive Manufacturing (LAM). It is a real revolution in the world of three-dimensional printing.
PU flexible plastic was formally presented in June at the Munich exhibition PSE Europe 2017. At this event the audience saw a live demonstration of the German RepRap LAM handling this material. This so-called “live” demo was the world’s first demonstration of processing a 3D-printer consumables such as liquid silicone and PU.
Features, new technology
LAM 3D printing is similar to FDM technique, where each layer is crosslinked with the other by means of heat curing to create complex parts. The result is products that are not much different in the it counterparts made by casting under pressure. The geometry of the parts produced using LAM, it may be much harder.
The revolutionary material is often referred to as liquid silicone rubber. He easily adapts to different printing requirements and applications. Its fluid texture completely eliminates the need for smelting. The user can achieve different physical and mechanical properties of printed products: they can be both soft and firm enough.
Despite the fact that the structures created by LAM is similar to the structures printed with the FFF, they are more complex. Polyurethane materials a great show, demonstrating high wear resistance, strength and ajusticiado.
If the processing of new material takes place at room temperature, the printing process becomes more energy efficient. It also causes a slight shrinkage of the material (1-2%). This means that with this consumable will not have problems with thermal deformation and disconnecting of the printing layer.