M-CORR 300 – High Build Solvent free PU Coating
is a high build, solvent free industrial coating. Formulated using the latest polyurethane coating technology. When cured the material exhibits a high degree abrasion resistance and flexibility allowing for substrate movement without cracking. Designed principally for the long-term high corrosion protection of storage tanks, structural steel, pump and valve casings, pipelines and other steel structures.
|External pipe protection|
External protection for pumps, valves and process equipment
100% Solids material
Flexible when cured
Outstanding corrosion resistance
Two colour system
Easy mix formulation
|Safe to use in a confined space
No coating shrinkage or cracking
Ideal for surfaces with movement
long-term asset protection
Helps to monitor coating erosion
Aids application on site
MAXCOR 300 – CORROSION RESISTANT POLYURETHANE COATING
MAXCOR 300 – CORROSION RESISTANT POLYURETHANE COATING. Formulated using the latest solvent free, high build polyurethane coating technology.
When cured MAXCOR 300 – CORROSION RESISTANT POLYURETHANE COATING exhibits a high degree of flexibility allowing for substrate movement without cracking.
Designed principally for the long-term corrosion protection of tanks and pipelines and other steel structures
All oil and grease must be removed from the surface of the repair using an appropriate cleaner such as MEK or similar solvent. For optimum performance, the surface should be grit-blasted to ISO 8501/4 Standard SA2.5 (SSPC SP10/ NACE 2) and a minimum blast profile of 75 microns using an angular abrasive.
Once blast cleaned, the surface must be degreased and cleaned using MEK or similar solvent. All surfaces must be repaired before gingering or oxidation occurs
Where abrasive blast cleaning is not possible (excluding salt contaminated surfaces) the surface should be roughened by, needle gun or grinding. Under these conditions’ adhesion levels will not be optimal although still satisfactory for most applications.
For salt contaminated surfaces the area must be grit-blast cleaned as mentioned above and left for 24 hours to allow any ingrained salts to come to the surface.
After this 24-hour period the surface must be washed with MEK prior to brush blasting to remove the surface salts. This process must be repeated until all ingrained contaminants have been sweated out of the surface.
Warm the Base component to 15-25°C before mixing and do not apply when the ambient or substrate temperature is below 5°C or less than 3°C above dew point.
Mix both PART-A and PART-B together in full units as supplied.
For small batch mixing us a ratio of: 3.25:1 by volume or 3:1 by weight
When mixing both materials, it is very important to have a uniform light or dark grey fluid that is streak free. Once mixing is complete, use the mixed paste as soon possible after mixing.
Transfer the contents of PART – A unit into the PART – B container and mix thoroughly until a uniform material free of any streaks is achieved. From the commencement of mixing the whole of the material should be used within 15 minutes at 20°C
MAXCOR 300 – CORROSION RESISTANT POLYURETHANE COATING Is typically applied as a two coat system.
Apply the mixed material onto the prepared surface by brush or roller. This should be in two coats at a target thickness of 400 microns per coat using a practical coverage rate of 2.5 sq metres per litre per coat.
Apply the second coat at a target thickness of 400 microns as soon as possible after the first coat is dry and not in excess of 24 hours. Use a practical coverage rate of 2.5 sqm per litre per coat.
15 minutes at 20°C
The material should be applied by brush or roller in two coats at a target thickness of 400 microns per coat using a practical coverage rate of 2.5 sqm per litre per coat.
The coverage rate stated is theoretical, practical coverage may vary due to substrate temperature, poor surface profile or pitting.
At 20°C the applied materials should be allowed to harden for the times indicated below before being subjected to the conditions indicated. These times will be extended at lower temperatures and reduced at higher temperatures:
Movement without load or immersion 2 hours
Light loading 4 hours
Full loading 3 days
Immersion 7 days
Minimum – the applied material can be over-coated as soon as it is touch dry.
Maximum – over-coating time 24 hours
Where the maximum over-coating time is exceeded, the material should be allowed
to harden before being abraded, or flash-blasted and solvent washed to remove any surface contamination
|Health and Safety||
Please ensure good practice is always observed during the mixing and application of this product.
Protective gloves must be worn during the mixing and application of this product. Before mixing and applying the material please ensure you have read the fully detailed Material Safety Data Sheet.
The data contained within this Technical Data Sheet is furnished for information only and is believed to be reliable at the time of issue. We cannot assume responsibility for results obtained by others over whose methods we have no control.
It is the responsibility of the customer to determine the products suitability for use.
Maxkote accepts no liability arising out of the use of this information or the product described herein.
MAXCOR 300 – CORROSION RESISTANT POLYURETHANE COATING
|Blue or light grey thixotropic liquid
Blue or light grey Thixotropic liquid
|Mixing Ratio||By Weight |
|Sag Resisitance||Nil at||400 microns|
|Coverage||Basecoat applied at a minimum target film thickness of 400 microns:|
Topcoat applied at a minimum target film thickness of 400 microns:
Finished, minimum target film thickness of 800 microns:
|2.5 sqm /ltr
|Cure Times||Movement without load or immersion: |
Full loading/water immersion:
|Storage Life||Unopened and stored in dry conditions (15-30°C)||2 years|
|Adhesion||Tensile Shear to ASTM D1002 on abrasive blasted mild steel with 75 micron profile||169kg/cm² 2400psi|
|Cathodic Disbondment||(British Gas CW6 and FW0028 Draft methods)||Pass|
|Corrosion Resistance||Tested to ASTM B117||5000 hours|
|Flexibility||(British Gas FW0028 Draft method)|
3% Strain at 20°C - PASS
2% Strain at 5°C - PASS
1% Strain at 0°C
|Hardness||Shore D to ASTM D2240||80|
|Heat Resistance||Suitable for use in immersed conditions at temperatures up to:|
Suitable for use in dry conditions at temperatures up to dependant on load:
|Chemical Resistance||At 20°C product resists attack by a wide variety of inorganic acids, alkalies, salts and organic media||Acetic Acid 10%
Benzoic Acid 15%
Ethyl Alcohol 50%
Formic Acid 10%
Hydrochloric Acid 20%
Lactic Acid 20%
Nitric Acid 10%
Phosphoric Acid 50%
Potassium Hydroxide 10%
Sodium Carbonate 10%
Sodium Hydroxide 10%
Sulphuric Acid 50%