MCH 400 – Chemical Resistant High Temperature Coating

£195.00£665.00 Excl VAT

MaxChem 400 is a chemical resistant epoxy novolac coating and lining system. Providing excellent chemical protection for high service temperature applications. Once cured the coating is capable of withstanding temperatures up to 90°C continuous immersion, dependent on chemical contact but is proven to protect against:

98% Sulphuric Acid at 75°C, 36% Hydrochloric Acid at 50°C and 40% Phosphoric Acid at 60°C 

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Description

MAXCHEM 400 – CHEMICAL RESISTANT HIGH TEMPERATURE COATING is a solvent free coating utilising the latest novolac polymer technology. The material provides excellent chemical protection for applications subject to high service temperatures. The products designed for the long-term protection of steel and concrete surfaces subject to constant chemical immersion at elevated temperatures.

Once cured  MAXCHEM 400 – CHEMICAL RESISTANT HIGH TEMPERATURE COATING is capable of withstanding temperatures up to 90°C continuous immersion, dependent on chemical contact but is proven to protect against 98% Sulphuric Acid at 75°C, 36% Hydrochloric Acid at 50°C and 40% Phosphoric Acid at 60°C  

PROTECTSAPPLICATIONSFEATURESBENEFITS
Metallic surfaces operating at elevated temperaturesChemical Pumps
Chemical Valves
Vessel Lining
Chemical Storage Tanks
Chemical Process Equipment
Solvent-Free
100% Solids Material
High chemical resistance
Two colour system
Easy mix formulation
Suitable for Confined Spaces
No Coating Shrinkage
Resists Strong Acids
Helps to monitor coating erosion
Aids application on site

MAXCHEM 400 – CHEMICAL RESISTANT HIGH TEMPERATURE COATING

Description

MAXCHEM 400 – HIGH TEMPERATURE CHEMICAL RESISTANT EPOXY NOVOLAC COATING is a high build solvent-free high functionality epoxy novolac coating designed to provide outstanding chemical and corrosion protection of steel and concrete structures at elevated temperatures.

MAXCHEM 400 – HIGH TEMPERATURE CHEMICAL RESISTANT EPOXY NOVOLAC COATING is particularly resistant to strong acids and concentrated industrial chemicals including 98% sulphuric, 36% hydrochloric.

Once cured the material is capable of withstanding temperatures up to 90°C continuous immersion, dependent on chemical contact.

Applications

  • Chemical Pumps, Impellers, Casings & Cutwaters
  • Heat Exchangers, Tube Sheets & Waterboxes
  • Vessel lining
  • Chimney Stacks
  • Process Equipment

Surface Preparation

Steel

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

Surface Preparation

Salts

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.

Surface Preparation Concrete

Remove any contamination and lightly abrasive blast or scarify taking care not to expose the aggregate.

Allow new concrete to cure for a minimum 21 days and remove any surface laitance before coating. Ensure the moisture content of the concrete is below 8% for MAXPRIME 100 – CONCRETE SURFACE PRIMER or less than 25% for MAXPRIME 200 – DAMP TOLERANT CONCRETE PRIMER. Suitable for applications where the surface temperature is 5°C or above

Priming

Concrete

Using MAXPRIME 100 or MAXPRIME 200  – Mix the base component (amber liquid) with the activator component (amber- liquid) in full units as supplied, ideally, use slow speed paddle mixer. When mixing both materials, it is essential to have a uniform streak free fluid.

Once mixed, the material should be used within 25 minutes at 20°C. 

Please see relevant application guide for each primer

Mixing

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 the PART – A (amber fluid) with PART – B (red or grey) in full units as supplied.

For small quantities us a mixing ratio of: 

5.34:1 BY VOLUME OR 4:1 BY WEIGHT   

When mixing both materials, it is very important to have a uniform streak free fluid. Once mixing is complete, the material should be used within 20-25 minutes at 20°C. 

To ensure best results use the mixed fluid as soon possible after mixing.

Application

Basecoat – Apply the mixed material onto the prepared surface by brush or roller. The base-coat should be applied at a minimum target film thickness of 250 microns.

Topcoat – Apply the second coat at a target thickness of 250 microns as soon as possible after the first coat is dry and not in excess of 6 hours.

Spray applications –  use sufficient passes to achieve a minimum thickness of 500 microns, checking the film thickness regularly with a wet film thickness gauge and brushing out the test marks. As a guide, 1 litre of material should be sufficient to cover 1.6 sq metres allowing for wastage

Coverage

1 litre of mixed product will cover 4 sq metres at a nominal film thickness of 250 microns per coat.

Pot Life

20 – 20 minutes @ 20°C

Cure Times

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 6 hours

·         Light loading 12 hours

·         Full loading/water immersion 4 days

·         Chemical Contact 7 days

For optimum performance, after an initial curing period of at least 12 hours at 20°C, raising the cure temperature progressively to 60 – 80°C for up to 8 hours will result in improved chemical resistance properties.

Overcoat

Times

Minimum – the applied material can be over-coated as soon as it is touch dry. 

 Maximum – over-coating time 6 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.

Legal Notice

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.

 PRINT APPLICATION GUIDE

MAXCHEM 400 – CHEMICAL RESISTANT HIGH TEMPERATURE COATING

AppearanceBase
Activator
Mixed
Grey/ red paste
Amber fluid
Grey/ red Liquid
Mixing RatioBy Weight
By Volume
4:1
3:1
DensityBase
Activator
Mixed
1.40
1.05
1.34
Solids Content100%
Sag ResisitanceNil at500 microns
Usable Life10°C
20°C
30°C

50 minutes
30 minutes
15 minutes

Theoretical CoverageBasecoat – minimum target film thickness of 250 microns:
Topcoat – minimum target film thickness of 250 microns:
Finished – minimum target film thickness of 250 microns:


4 sqm /ltr
4 sqm/ltr
2 sqm/ltr
Cure TimesMovement without load or immersion:
Light loading:
Full loading/water immersion:
Chemical Contact:
6 Hours
12 hours
4 days
7 days
Storage LifeUnopened and stored in dry conditions (15-30°C)5 years
AdhesionTensile Shear to ASTM D1002 on abrasive blasted mild steel with 75 micron profile188kg/cm² 2650psi
Compressive StrengthTested to ASTM D 695592kg/cm² 8,400psi
Corrosion ResistanceTested to ASTM B117+ 1000 hours
Flexural StrengthTested to ASTM D790480kg/cm² 6800psi
HardnessShore D to ASTM D224020°C 86
100°C 84
150°C 72
Heat DistortionTested to ASTM D648 at 264psi fibre stress20°C Cure 62°C
100°C Cure 98°C
150°C Cure 112°C
Heat ResistanceSuitable for use in immersed conditions at temperatures up to:
Suitable for use in dry conditions at temperatures up to dependant on load:
70°C
170°C
Chemical ResistanceMAXCHEM 400 (post-cured) offers excellent resistance to the following chemicals when tested at the temperatures indicated:

98% Sulphuric Acid 75°C
75% Sulphuric Acid 90°C
50% Sulphuric Acid 90°C
25% Sulphuric Acid 90°C
36% Hydrochloric Acid 50°C
10% Hydrochloric Acid 50°C
40% Phosphoric Acid 60°C
20% Phosphoric Acid 60°C
5% Nitric Acid 50°C
40% Sodium hydroxide 90°C
20% Sodium Chloride 90°C

For further guidance, please Contact us!
In addition the product offers
excellent resistance to the
following chemicals when tested
at 20°C:

Chromic 10%
Hydrobromic 40%
Hydrochloric 36%
Nitric 10%
Nitrous 10%
Phosphoric 75%
Sulphuric 98%
Acetic 10%
Carbonic 30%
Citric 30%
Folic 20%
Formic 10%
Lactic 10%
Ammonium hydroxide 30%
Potassium hydroxide 20%
Sodium hydroxide 40%
Sodium Bisulfate 40%
Butanol 100%
Ethanol 100%
Ethylene glycol 100%
Hexanol 100%
Propylene glycol 100%
Aniline 100%
Diethanolamine 100%
Hydrazine 100%
Methylamine 40%
Cyclohexane 100%
Hexane 100%
Octane 100%
Benzene 100%
Naphtha 100%
Toluene 100%
Xylene 100%

PRINT TECHNICAl DATA

MAXCHEM 400 – CHEMICAL RESISTANT HIGH TEMPERATURE COATING

PRINT MSDS PART – A

PRINT MSDS PART – B

MAXCHEM 400 – CHEMICAL RESISTANT HIGH TEMPERATURE COATING

When used according to the procedures detailed in the Application Guide and Technical Data Sheet for the material. The product resists attack by a wide variety of concentrated inorganic acids, alkalies, salts and organic media

MAXCHEM 400 (post-cured) offers excellent resistance to the following chemicals when tested at the temperatures indicated:

98% Sulphuric Acid 75°C
75% Sulphuric Acid 90°C
50% Sulphuric Acid 90°C
25% Sulphuric Acid 90°C
36% Hydrochloric Acid 50°C
10% Hydrochloric Acid 50°C
40% Phosphoric Acid 60°C
20% Phosphoric Acid 60°C
5% Nitric Acid 50°C
40% Sodium hydroxide 90°C
20% Sodium Chloride 90°C

In addition the product offers excellent resistance to the following chemicals when tested at 20°C:

Chromic 10%
Hydrobromic 40%
Hydrochloric 36%
Nitric 10%
Nitrous 10%
Phosphoric 75%
Sulphuric 98%
Acetic 10%
Carbonic 30%
Citric 30%
Folic 20%
Formic 10%
Lactic 10%
Ammonium hydroxide 30%
Potassium hydroxide 20%
Sodium hydroxide 40%
Sodium Bisulfate 40%
Butanol 100%
Ethanol 100%
Ethylene glycol 100%
Hexanol 100%
Propylene glycol 100%
Aniline 100%
Diethanolamine 100%
Hydrazine 100%
Methylamine 40%
Cyclohexane 100%
Hexane 100%
Octane 100%
Benzene 100%
Naphtha 100%
Toluene 100%
Xylene 100%

For more detailed information on chemical resistance for this product, do not hesitate to CONTACT US!

Additional information

WeightN/A
Unit Size

,

Colour

,

Mixing Ratio

4:1 By Volume, 5.34:1 By Weight