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M-CHEM 401 – Acid Resistant High Temperature Coating – Extended Cure

The material provides 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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£195.00£665.00 Excl VAT

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Description

M-CHEM 401 – Acid Resistant High Temperature Coating – Extended Cure

Is an Extend Cure Version of M-CHEM 400  the material 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 product is designed for the long-term protection of steel and concrete surfaces subject to constant chemical immersion at elevated temperatures.

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

M-CHEM 401 is proven to protect against 98% Sulphuric Acid at 75°C, 36% Hydrochloric Acid at 50°C and 40% Phosphoric Acid at 60°C.  

Typical Uses

  • Tank lining & process vessels
  • Lining for Chemical drains and channels
  • Lining for Internal Pipe Surfaces
  • Protection for Chemical Sumps
  • Lining for Pressure Vessels 

Please contact us to discuss your project before purchasing this material to confirm suitability.

Application Guide

  • All oil and grease must be removed from the surface using an appropriate cleaner such as MEK or similar type solvent.
  • All surfaces must be abrasive blasted to ISO 8501/4 Standard SA2.5 (SSPC SP10/ NACE 2) minimum blast profile of 75 microns using an angular.
  • Once blast cleaned the surface must be degreased and cleaned using MEK or similar type solvent.
  • All surfaces must be coated before gingering or oxidation.

PLEASE NOTE: Soluble salt contaminated surfaces the substrate must be pressure washed with clean water and checked for salt contamination this process may need to be repeated several times., 

Existing Concrete

New Concrete

  • Allow new concrete to cure for a minimum of 21 days and treat to remove any surface laitance.
  • Check the moisture content of the concrete prior to coating (8% moisture content or below).
  • Lightly scarify the surface taking care not to expose the aggregate.
  • Clean all dust and debris from the surface and prime with M-PRIME 100 low viscosity epoxy primer.
  • Apply either primer at 150 microns WFT, leave to cure for 3 hours 20°C before overcoating.

Prior to mixing please ensure the following:

  • The base component is at a temperature between 15-25°C.
  • Do not apply the material when the ambient or substrate temperature is below 10°C or less than 3°C above dew point.
  • Transfer the contents of the Activator unit into the Base container.
  • Using a low speed electric paddle mixer, mix the 2 components until a uniform material free of any streaks is achieved.
  • Once mixing is complete, use the mixed paste as soon possible.

Use all mixed material within 20-25 minutes at 20°C.

Brush or Roller Applications

  • Pour the mixed material into a paint kettle or paint tray (this will maximise the usable life)
  • Using a 50mm wide synthetic brush, stripe coat all edges, joints, corners and equipment with the mixed material. The stripe coat must be approximately 100mm wide, at 500 microns wet film thickness.
  • Once the stripe coat has cured sufficiently and is capable of being overcoated, apply the 1st coat of mixed product to all surfaces at 500 microns wet film thickness.
  • Once the 1st coat of material has cured sufficiently, approximately 8 hours at 20°C, apply a 2nd coat of material to all surfaces at 500 microns wet film thickness.

Spray set up & Application

  • Spray application should be carried out by heated plural feed spray rig.
  • The temperature of the base component should be kept around 35°C.
  • Spray pressure of 3600psi and a tip size of 19-23 thou should be used.
  • Using a 50mm wide synthetic brush, stripe coat all edges, joints, corners and equipment with the mixed material. The stripe coat must be approximately 100mm wide, at 400 microns wet film thickness.
  • Once the stripe coat has cured sufficiently and is capable of being overcoated, apply M-CHEM 401 to all surfaces at 1000 microns wet film thickness.

To enhance the properties of this material, post curing will be required.

  • Allow the product to cure for at least 4 hours at 20°C.
  • Raise the coating and substrate temperature progressively to 60 – 80°C for up to 8 hours.

Post curing will result in improved mechanical, thermal and chemical resistance properties.

AppearanceBase
Activator
Mixed
Grey/ red paste
Amber fluid
Grey/ red Liquid
Mixing RatioBy Weight
By Volume
4.35:1
3.25:1
DensityBase
Activator
Mixed
1.41
1.05
1.33
Solids Content100%
Sag ResisitanceNil at500 microns
Usable Life10°C
20°C
30°C

90 minutes
45 minutes
22 minutes

Theoretical CoverageThe material should
be applied in 2 coats at
500 microns wet film
thickness


2 sqm /ltr
Cure TimesMinimum overcoating time at 20°C
Maximum overcoating time at 20°C
Water/ sea water immersion at 20°C
Chemical immersion at 20°C
8 hours
24hours
96 hours
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 profile201kg/cm² 2855psi
Compressive StrengthTested to ASTM D 695901kg/cm² (12800psi)
Corrosion ResistanceTested to ASTM B1175000 hours
Flexural StrengthTested to ASTM D790810kg/cm² (11500psi)
HardnessShore D to ASTM D224020°C 86
100°C 85
150°C 72
Heat DistortionTested to ASTM D648 at 264psi fibre stress20°C Cure 60°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:
90°C
200°C
Enhanced Chemical Resistance when post cured


Acetic Acid 10% at 50˚C
Ethanol 100% at 75˚C
Sulphuric Acid 98% at 75˚C
Sulphuric Acid 25 -75% at 90˚C
Hydrochloric Acid 10-36% at 50˚C
Phosphoric Acid 20-40% at 60˚C
Nitric Acid 5% at 50˚C
Sodium Hydroxide 40% at 90˚C
Sodium Chloride 20% at 90˚C


Chemical Resistance 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%
Chemical Resistance tested at 20˚C


Butanol 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%

Please contact us to discuss your project before purchasing this material to confirm suitability.

M-CHEM 300 – BASE – MSDS

M-CHEM 300 – ACTIVATOR – MSDS

Additional information

Weight N/A
Unit Size

16ltr, 4ltr

Colour

Dark Grey, Red

Mixing Ratio

4:1 By Volume, 5.34:1 By Weight

Brand

Maxkote

Manufacturer

Maxkote