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Polymer Coating Laboratory

Polymer Coating Laboratory at SPRC


Optical Microscope Image

PROBE SONICATOR

  • Specially designed sonotrodes (ultrasonic probes) for the effective sonication at elevated ultrasonic power levels at low or medium sonication intensities.
  • To achieve homogenous dispersion and de-agglomerated phase of polymer matrix, nanoparticles and fillers in order to produce high performance coatings.

HIGH SPEED MIXERS

  • To grind pigments and fillers in high viscosity matrix.
  • Used for Epoxies, polyurethanes and styrene-acrylic emulsion.
  • Mixing of dispersed nanoparticle solution in slurry.

Cone and Plate Viscometer

Viscosity or Rheology of the pre-polymer and oligomers is measured by Cone and Plate viscometer for low viscous materials from Sheen Instruments, UK.

Kreb Viscometer

Viscosity or Rheology of the pre-polymer and oligomers is measured by Kreb viscometer for high viscous materials from Sheen Instruments, UK.

PENDULUM HARDNESS TESTER

  • Glass sheets with coatings are used to determine coating hardness by Oscillator of Sheen Instruments Ltd (U.K) according to test standard method ASTM D4366.
  • The hardness of the coating applied on the glass plate is directly proportional to the number of oscillations counts.

SCRATCH RESISTANCE MEASUREMENT

  • The ability of coating to resist damage caused by abrasion on coating surface to permanent deformation.
  • Test are conducted following ASTM D7027.
  • The measument of the scratch resistance is carried out with the help of A Sheen scratch resistance tester (Model: 705) UK.

IMPACT TESTER

  • Used for testing impact resistance of coatings on metal substrates.
  • The purpose of impact testing is to find the amount of energy necessary to cause failure of specimen.

Taber Abrader

  • Abrasion resistance of the coatings is measured on metal sheets at various thicknesses and with different loads applied on the wheels of the abrader.
  • Thickness of the coating applied on the sheet should be uniform in order to obtain appropriate results of weight loss.
  • This procedure determines the adhesion strength of the coating on the substrate.

Accelerated Weathering Tester QUV

  • It is an apparatus that uses extensive UV radiation as an accelerated method to simulate the effect of ambient UV radiation on the coating Panels.
  • This test is best done along with an actual UV exposure in sun light.
  • This enable researchers to correlate real life exposure to the accelerated weathering test data.

EIS (Electrochemical Impedance Spectroscopy)

  • EIS is a quantitative technique that enables to rapidly examine the corrosion protective mechanisms of coatings.
  • EIS is a sensitive technique that can pick up coating degradation prior to its visual manifestation.
  • This technique can also be used for development of new coating formulations, self-healing coatings or nano coatings.

Nano Indenter (NanoTest, UK)

Nano-indentation is a robust technique for determination of thin film properties for which conventional testing are not feasible.

Nano-indentation can be used for determination of local properties of homogeneous as well as heterogeneous materials.

Capable of conducting:

  • Nanoindentation (both quasi-static and dynamic)
  • Nano-impact and fatigue
  • Nano-scratch and wear
  • Nano-fretting