Technology – How we test the coatings

How we test the technology

Optitune Technology - How we test the technology

Optitune has extensive testing facility in its own lab and in cooperation with the leading Finnish universities. Standard tests of our coatings include among others Pencil Hardness test, Abrasion Resistance test with Taber tool, Water Contact Angle test. To learn more about how we test our coatings, have a look at the video below:

The Pencil Hardness Test

Pencil hardness test is used to evaluate the hardness of coating compared to a graphite pencil. Pencils with different hardness are used. Test may require several measurements to actually determine the pencil hardness value of the coating First the pencil is prepared by sharpening and then flattening the tip. The pencil is placed into a standardized tool, and the tip is pushed along the coated material. If the pencil leaves no scratch, the coating is at least as hard as the pencil.

Oil-based Permanent Marker Test

Testing is an important phase in Optitune product development done to ensure that the product is up to the required task. Demonstrated below is #easytoclean feature by the test of oil repellent properties of TPD500.  Using an oil-based marker pen, a line is drawn on both coated and uncoated samples to compare the oleophobic qualities of the coating. The coated sample visibly repels the marker pen, making it easy to clean with just dry paper leaving no trace behind, marking this a successful test for the coating.  Uncoated surface is almost impossible to clean from oil-based black pen traces.

Water Contact Angle meter (WCA)

Water Contact Angle meter (WCA) measures the hydrophobic qualities of a surface by calculating the contact angle of a water drop and a coated surface. The higher the contact angle, the more hydrophobic a surface is.

Taber tool

The scratch resistance of a coated surface is tested with a linear abraser tool that simulates the wear and tear a surface goes through in its lifetime.

Scientific articles

scientific articles

Sacha Legrand's and Ari Kärkkäinen's new article "1,3-Dimethyl-tetrakis(2-triphenylsilylethyl) dimethyldisiloxane: a new carbosilane for the preparation of high-refractive-index films" is now published.

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scientific articles

Sacha Legrand, Milja Hannu-Kuure and Ari Kärkkäinen have accomplished successfully new monomer synthesis. It's made of cheap, commercial raw materials, and only in four steps with waste minimisation.

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scientific articles

Check out this wonderful article by Sacha Legrand that concentrates on an urgent demand to prepare three‐dimensional polysiloxanes, which are more resistant toward aging processes.

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