Ein Hochleistungsabsorber

Nano-scaled PeroLab





Converting light into heat

PeroLab Absorber made from nano-scaled lanthanum hexaboride (LaB6) with a diameter of 20 – 120 nm.

Applications:
  • Additive manufacturing 3D printing
  • Laser welding
  • Varnish drying
Lanthanum hexaboride (LaB6) nano-scaled is a non-toxic, blue-green compound with a melting point of over 2000°C. The excellent property of being able to convert light in a wavelength range of 800–1400 nm into heat with high efficiency opens up a vast number of very interesting applications, e.g. as an additive in 3D printing, in laser welding and in varnish drying.
Delivery forms:

PeroLab nano particles are provided as a dispersion (water, alcohol) or already worked into a polymer powder.

Manufacture


Two different processes are used: Plasma technology and dispersion grinding. Both processes are primarily different from one another in the nano particle form they generate. Application-specific dispersions are manufactured here where the nano particles are distributed homogeneously. The dispersing agents are alcohols or water.

Plasma technology

Dispersion grinding

Applications


Additive manufacturing 3D printing


A great challenge for 3D printing, FDM process, is the stability, more precisely, the tensile strength of the printed 3D object in the Z axial direction. PeroLab nano particles worked into plastics, e.g. PLA, make it possible to heat up the plastic filament immediately using lasers or with LED lamp radiation. In 3D printing, the filament layer put down after the nozzle is radiated at the same time with a laser or LED lamp. The contact surface of both layers heats up immediately and fusion is guaranteed. This achieves a secure, stable connection of the layers. Tension rod measurements revealed an increase in tensile strength in the Z axial direction of up to 80 %.

Laser welding


Laser welding is a process for bonding plastic where one component is laser transparent and the other is laser absorbing. Most plastics have no absorption in the required wavelength range of 800–1400 nm and cannot therefore be welded without a laser-absorbing additive. PeroLab nano particles are particularly well suited as highly efficient absorbers, for example, a PeroLab dispersion can be applied onto connecting PET plates and welded with a laser. PeroLab nano particles can also be compounded into diverse polymers. Components created in this way can be welded successfully. An advantage of using PeroLab nano particles is the generation of a clean and robust weld seam without residues. In addition, the concentration of PeroLab nano particles used is so low that the colour of the weld seam almost corresponds to the colour of the plastic.
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