Postcuring - Post-Cross-Linking of High Gloss Coatings

 Excirad 172 lamps can be used for post-cross-linking of cured acrylate coatings.  Photons with energies of 7.2 eV, as they are generated by excimer sources as Excirad 172 are strongly absorbed in a polyacrylate matrix.  They reach penetration depths of a several 10 to a several 100 nm in polyacrylates.   Radiation-initiated primary processes are triggered by electronic excitation of molecular states in the polymer molecule, which leads to the generation of polymer radicals.  Polymer radicals lead through recombination to crosslinking, i.e. to an increase of the molecular weight and a reduction of the free volume in the polymer.

As a result of the post-cross-linking we can observe:

  • an increased microhardness
  • an improved chemical resistance
  • an increased surface energy (in combination with oxygen)

Patent pending

postcuring Post-Cross-Linking of High Gloss Coatings

Normal UV Curing

UV Polymerisation normal uv curing Postcuring - Post-Cross-Linking of High Gloss Coatings - IOT Leipzig

Excimer Curing

Postcuring - Post-Cross-Linking of High Gloss Coatings - IOT Leipzig

Iodine test

Postcuring - Post-Cross-Linking of High Gloss Coatings - IOT Leipzig

IOT GmbH Leipzig

Innovative Surface Technologies

Applications

UV - Technik
Plasma- und Ionenstrahltechnik
Silanisierung

Contact

IOT Innovative Oberflächentechnologien GmbH
Wissenschaftspark Leipzig, Gebäude 33.0
Permoserstraße 15

04318 Leipzig
Deutschland
Phone +49 341 235 3611 Fax +49 341 235 2453
E-mail: info@iot-gmbh.de
www.iot-gmbh.de