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M-CHEM 500 – Erosion & Chemical Resistant Epoxy Coating

The product is designed for the protection of steel and concrete surfaces in contact with industrial chemicals and mild acidic solutions.

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£100.00£408.00 Excl VAT

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Description

M-CHEM 500 - Abrasion & Chemical Resistant Epoxy Coating

Is a high build solvent-free epoxy coating with the addition of ceramic carbide fillers designed for the long term protection of steel and concrete structures against abrasion and chemical attack.

The product is used as a protective coating and lining for effluent tanks, slurry tanks, marine structures. Due to the added silicon carbide filler,  where a high solids content may be present.

Typical Uses

  • Internal pipe surfaces
  • Tank internal surfaces
  • Chutes, Hoppers and Sumps
  • Turbine blades and housings
  • Fans and fan housings

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

  • If the concrete surface is contaminated, pressure wash using clean water.
  • Once the concrete is dry lightly abrasive blast or scarify taking care not to expose the aggregate.
  • Clean all dust and debris from the surface and take several moisture readings and prime with M-PRIME 100 – Low Viscosity Epoxy Concrete Primer or M-PRIME 104 – Damp Tolerant Concrete Primer dependent on the moisture readings obtained.
  • Apply M-PRIME 100 or M-PRIME 104 at a target wet film of 150 microns, allow to cure before overcoating.
  • For very porous surfaces a second coat of primer may be required.

New Concrete

  • Allow new concrete to cure for a minimum of 21 days, lightly abrasive blast or scarify to remove any surface laitance.
  • Clean all dust and debris from the surface and take several moisture readings and prime with M-PRIME 100 – Low Viscosity Epoxy Concrete Primer or M-PRIME 104 – Damp Tolerant Concrete Primer dependent on the moisture readings obtained.
  • Apply M-PRIME 100 or M-PRIME 104 at a target wet film of 150 microns, allow to cure before overcoating.
  • For very porous surfaces a second coat of primer may be required.

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 5°C.
  • 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 after mixing.
  • Use all mixed material within 60 minutes at 20°C.
  • For applications that require additional pot life we suggest M-CHEM 101 – Chemical Resistant Epoxy Coating – Extended Cure.

Brush & Roller

  • Pour the mixed material into a paint kettle or paint tray (this will maximise the usable life).
  • Stripe coat all edges, joints & corners.
  • Once the stripe coat has cured and is capable of being overcoated, apply a basecoat at a minimum wet film thickness 400 microns.
  • Once the basecoat has cured sufficiently, approximately 10 hours at 20°C, apply a topcoat at a minimum wet film thickness of 400 microns.
AppearanceBase
Activator
Mixed
Highly structured thixotropic liquid
Amber liquid
Thixotropic liquid
Mixing RatioBy Weight
By Volume
3.5:1
2.4:1
DensityBase
Activator
Mixed
1.72
1.03
1.49
Solids Content100%
Sag ResistanceNil at400 microns
Usable Life10°C
20°C
30°C

60 minutes
30 minutes
15 minutes

Coverage 2 coat system to properly prepared surfaces at 400 microns:


2.5 sqm/ltr
Cure Times at 20°C Minimum overcoating time
Maximum overcoating time
Water/ sea water immersion
Chemical immersion
10 hours
36 hours
3 days
7 days
Storage LifeUnopened and stored in dry conditions (15-30°C)5 years
Abrasion ResistanceTaber CS17 Wheels/1 Kg load138mg loss/1000 cycles
0.09cc loss/1000 cycles
AdhesionTensile Shear to ASTM D1002 on abrasive blasted mild steel with 75 micron profile190kg/cm² 2700psi
Compressive StrengthTested to ASTM D 695680kg/ cm² 9650psi
Corrosion ResistanceTested to ASTM B1175000 hours
Immersion TestingTested to ISO 2182-2 – 50°CNo blistering or corrosion after 6 months
Flexural StrengthTested to ASTM D790518kg/cm² 7350ps
HardnessShore D to ASTM D224080
Heat ResistanceSuitable for use in immersed conditions at temperatures up to:
Suitable for use in dry conditions at temperatures up to dependant on load:
60°C
200°C
Black Liquor
Crude Oil
Diesel
Hydrochloric Acid 20%
Hydrocarbons
Phosphoric Acid 30%
Sea Water
Sodium Hydroxide 50%
Sulphuric acid 20%
White Liquor
40˚C
30˚C
40˚C
40˚C
40˚C
40˚C
40˚C
40˚C
40˚C
40˚C

Additional information

Weight N/A
Unit Size

16ltr, 3.4ltr

Colour

Dark Grey, Light grey

Mixing Ratio

2.4:1 By Volume, 4:1 By Weight

Brand

Maxkote

Manufacturer

Maxkote