Two main topics are covered in the coating department:

  • Powder coating
  • Wet coating

Here, both new coating developments from customers and formulations developed at the EZD are examined for their applicability as well as coating and surface properties. Special attention is paid to functional (e.g. electrically conductive, superhydrophobic and scratch-resistant) coatings. The complete range of substrates (metal, plastic, glass, ceramics, etc.) can be coated.

Coating properties to be investigated are:

  • Adhesion
  • Roughness
  • Defects (holes, orange peel)
  • Haptics

Surface properties:

  • Surface tension (contact angle)
  • Electrical conductivity
  • Scratch resistance
  • Washing and abrasion resistance 
Andreas Schneider
Senior Scientist

Technical equipment

Automatic film applicator
  • Automatic film applicator for the production of uniform coatings on a wide variety of substrates (metal, plastic, glass, etc.)
  • Max. Size of test area: A3 (297 x 420 mm)
  • Hardness test rod ISO 1518
  • Drying time recorder: ISO 9117-4
Powder coating system
  • Hand gun with corona charging for coating different substrates 
  • Production of environmentally friendly, functional powder coatings
  • Substrates: metal, plastic and glass after pre-treatment 
Surface analysis


  • The adhesion testers automatically perform tear-off tests to assess the adhesion/cohesion of coatings to metal, wood, concrete and similar substrates.
  • Test stamp size 20 mm and 50 mm
  • Standards DIN EN ISO 16276-1, DIN EN ISO 4624, ASTM D4541

Coating thickness measurement

  • Ultrasonic coating thickness gauge for different substrates (metal, plastic, glass etc.)
  • Measuring range 13 - 1,000 μm - Minimum layer thickness of a single layer: 13 μm


  • Measurement of the interfacial and surface tension of liquids using the plate method
  • Measurement of contact angles on rectangular, round and cylindrical samples
  • Contact angle measurement on powders using the Washburn method
  • Determination of liquid density
  • Determination of penetration and sedimentation of dispersions
  • Measurement of surfactant properties; CMC determination; dosing via micro-dispenser
  • Temperature range: 20 °C - 100 °C
  • Measuring range: 1 - 2,000 mN/m

Abrasion resistance

  • Automatic washability and abrasion tester including 2 pumps for test liquid supply
  • Lifting/pushing speed: 1-60 strokes/min.
  • Stroke/push length: 20-300 mm
  • Max. specimen width: 70 mm per channel (with 4 tools) 
  • Max. specimen length: 350 mm 
  • Test according to ISO 11998, ASTM D 4213, ASTM D 2486

Contact angle measuring system

  • Portable instrument for measuring the contact angle (water, diiodomethane)
  • Calculation of surface free energy according to Owens-Wendt-Rabel-Kaelble, Wu, Zisman and Fowkes

Conductivity meter

  • 4-point measuring method for measuring conductors and semiconductors in the lower resistance range.
  • Measuring range: 10-4 - 107 Ω x cm.
  • It is used for measurement in the low resistance range:
    • of the specific surface resistance
    • the volume resistivity (Ω·cm)
    • the specific electrical conductivity (S/cm)

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EZD · Location Selb

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c/o SKZ – KFE gGmbH
Weißenbacher Str. 86
95100 Selb

Phone: +49 9287 99880-0

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