GOVESAN RE
Powder coatings with an epoxy resin base. It has great chemical resistance, mechanical properties anti-corrosive power. Appropriate for coating inside surfaces. It comes in a wide range of colors (including clear), finishes, and other special looks.

APPLICATION THICKNESS
GOVESAN RE powder is applied onto a substrate reaching thicknesses between 30 and 150 microns in just one coat. With greater thicknesses “repulsion” may occur. For thicker coats, the piece must be preheated and high thixotropic powder must be used.

PRODUCT PROPERTIES
Type of resin: Epoxy
Density: 1.2 to 1.75 gr/cm3 (depending on color)
Particle: 10-100 microns (90%)
Storage: Maximum 30ºC (dry place)

RANGE OF POLYMERIZATION
It is extremely important to remember metal temperature or coating temperature and NOT the oven.
CURING CURVES - EPOXY POWDER COATING (Chart 1)
In order to determine if the coating has cured well, we recommended dipping a small cotton ball in MEK and placing it on top of the coated piece for 1.5 minutes. Then, remove the cotton ball and observe the corrosion that has occurred.

If the cotton forms small strands with the coating, if it stains or if the surface stains when touched, this means that the piece has not cured properly due either to lack of time or temperature.
If it has polymerized well, the coating, soft at first, will harden in two minutes.

SURFACE PROPERTIES
Mechanical tests have been done on 8/10 LFQX white metal plate, 160x70 mm, free of dust, with rust and grease completely removed with Clorethene vapor. It was coated with a thickness of 50 microns at a temperature of 180ºC in 10 minutes.

MECHANICAL TESTS

• Gloss at 60º: 2-100%
  ASTM D 523, DIN 67530, UNE 48026-80
• Grid adherence: 100%
  UNE 48032-80, ASTM D 3359,DIM 53151
• Flexibility 3 mm
  ASTM D 1737, DIN 53152, UNE 48169-62
• Direct impact: 12.5 mm ball 700 mm
  ASTM D 2794-69, UNE 6272
• Inverse impact: 12.5 ball 700 mm
  ASTM D 2794-69, UNE 6272
• Pencil Hardness: 3 H
  ASTM D 3363, INTA 160302
• Ericksen Test (Stamping) 8 mm
  DIN53156, UNE 48183-84
• Peksoz Hardness Test: 320 sec.
  INTA 160225, UNE 48024

CHEMICAL PROPERTIES
For the chemical tests, we used LFQX white metal plate with all grease removed treated with zinc phosphate (1.75 gr/sq. meter).

• Saline mist: >500 h. (2 MM)
  ASTM B 117, UNE 5867-65, DIN 50021
• Damp chamber at 45ºC: >1000 hrs - no blistering
• Resistance to ultra-violet light: 200 h.
  

RESISTANCE TO ACIDS AND ALKALI
Tests done with 132 bonder flasks coated with Epoxy powder coating. Test temperature: 20-25ºC

• Hydrochloric Acid 5%:
  after 3 months • unaltered
  from 3 to 5 months • slight corrosion
  from 5 months • strong corrosion
• Hydrochloric Acid 10%:
  after 1 month • strong corrosion
• Sulfuric Acid 30%:
  after 8 months unaltered
  from 8 to 12 months • slight corrosion
  from 12 months • strong corrosion
• Nitric Acid 3%:
  after 2 months • slight corrosion
  from 4 months on • strong corrosion
• Phosphorus Acid 10%:
  after 24 months • unaltered
• Acetic Acid 10%:
  after 3 months • unaltered
  from 3 to 5 months • strong corrosion
• Lactic Acid 10%:
  after 24 months • unaltered
• Caustic Soda 10%:
  after 24 months • unaltered
• Ammonia:
  after 20 months • unaltered
  from 20 to 24 months • slight corrosion
  

RESISTANCE TO SOLVENTS

• Ethanol 10%:
  after 24 months • unaltered
• Ethanol 60%:
  after 3 months • unaltered
  from 3 to 7 months • slight corrosion
  from 17 to 21 months • severe corrosion
• Toluene:
  after 4 months • unaltered
  from 4 to 12 months • slight corrosion
  from 12 to 24 months • severe corrosion
• Xylene:
  after 3 months • unaltered
  from 3 to 12 months • slight corrosion
  from 12 to 17 months • severe corrosion
• Kerosene:
  after 24 months • unaltered
• Oil:
  after 24 months • unaltered
• De-ionized water:
  after 24 months • unaltered