German RepRap introduces PU material for liquid 3D printers

Recently, German FDM 3D printer specialist RepRap announced a partnership with plastics company ebalta Kunststoff to develop a new urethane (PU) formulation for its liquid additive manufacturing (LAM) process. According to the company, 3D printed materials have isotropic mechanical properties.

According to the German materials company ebalta Kunststoff, the recent European PSE (International Polyurethane Exhibition) in Munich has achieved great success. In the impression of the participants, ebalta used the German RepRap LAM (liquid additive manufacturing) 3D printer to process its new liquid polyurethane 3D printing material on its booth, and achieved amazing results, leaving a deep impression on the visitors. .

It is worth mentioning that 3D printed materials have isotropic mechanical properties due to chemical crosslinking. It can be processed in liquid form, eliminating the melting process of a typical FDM 3D printer. But the real appeal of PU materials lies in its flexibility. RepRap and ebalta of Germany stated that the material was developed to create a wide range of properties, from soft to hard, for prototype construction or consumer product functional models.

While the mechanical properties of PU printed objects can be comparable to the mechanical properties of injection molded parts, 3D printed materials can be used to make more complex parts than injection molding. In order to do this, users will need a LAM 3D printer like RepRap from Germany, which was announced at the Frankfurt show last year. LAM enables 3D printing of materials such as liquid silicone.

Florian Bautz, General Manager of RepRap in Germany, said at this year's RAPID + TCT event: "The new liquid additive manufacturing technology is a 3D printing revolution and will strongly influence the rethinking of the field of additive or material reduction. We can say that this is a new The beginning of the era, because there is no comparable technology anywhere in the world."

With LAM printers, users will be able to take full advantage of the new PU liquid materials, such as the ability to print at room temperature. Processing at room temperature clearly enables an "efficiently efficient printing process" while also reducing material shrinkage (between 1% and 2%). This greatly reduces the chance of heat warping or detachment of the printed material.

“Because of its excellent mechanical properties, polyurethanes are suitable for special applications such as products that require high wear resistance,” said RepRap, Germany. “This makes them suitable for almost all industries, especially in the automotive, aerospace and construction industries.”

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