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M-CHEM 300 - Acid Resistant Epoxy Novolac Coating

M-CHEM 300 - Acid Resistant Epoxy Novolac Coating

£218.77£744.98 Excl VAT

M-CHEM 300 – Acid Resistant Epoxy Novolac Coating

£218.77£744.98 Excl VAT

Is an Acid Resistant Coating based on Epoxy Novolac Resins is suitable acid bunding, acid storage tanks etc.

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Description

M-CHEM 300 - Acid Resistant Epoxy Novolac Coating

Is a high-build, solvent free Epoxy Novolac Coating, providing excellent resistance to a wide range of concentrated acids and industrial chemicals.

The material is suitable for a variety of applications including as a lining for bunding and secondary containment or as an internal lining for process equipment such as pressure vessels operating below 60°C.

M-CHEM 300 – Acid Resistant Epoxy Novolac Coating is proven to protect against Sulfuric Acid 98%, Hydrochloric Acid 36%, Phosphoric Acid 75% and Hydrobromic Acid 40%.

Typical Uses

  • Acid Resistant lining for Process Columns
  • As a Chemical Storage Tank Lining
  • To protect Bunds & Containments from chemical attack

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.

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 dependant on 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 dependant on 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 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 & 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 target wet film thickness of 400-500 microns.
  • Once the basecoat has cured sufficiently, (approximately 4 hours at 20°C) apply a topcoat at a target wet film thickness of 400-500 microns.

Airless Spray

Spray application should be carried out by airless spray using a 45:1 ratio pump with an attached hot water pump to heat the spray lines.

  • The temperature around the spray lines should be kept around 25-35°C.
  • Spray pressure of 3600psi and a tip size of 19-23 thou should be used.
  • Use as short a line as possible to maintain product temperature (maximum 8 meters).
  • Circulate the product for a short time to achieve temperature equilibrium.
  • Stripe coat all edges, joints & corners.
  • Once the stripe coat has cured and is capable of being overcoated, apply a basecoat at a target wet film thickness of 400-500 microns.
  • Once the basecoat has cured sufficiently, (approximately 4 hours at 20°C) apply a topcoat at a target wet film thickness of 400-500 microns.

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 – 100°C for up to 8 hours.

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

AppearanceBase
Activator
Mixed
Highly structured thixotropic liquid
Amber liquid
Thixotropic liquid
Mixing RatioBy Weight
By Volume
4:1
3:1
DensityBase
Activator
Mixed
1.41
1.02
1.32
Solids Content100%
Sag ResistanceNil at500 microns
Usable Life10°C
20°C
30°C

50 minutes
25 minutes
12 minutes

Theoretical CoverageBasecoat – minimum wet film thickness of 400 microns
Topcoat – minimum 400 film thickness of 400 microns



2.5 sqm /ltr
2.5 sqm/ltr
Cure Times at 20°C Minimum overcoating time
Maximum overcoating time
Water/ sea water immersion
Chemical immersion
4 Hours
12 hours
4 days
7 days
Storage LifeUnopened and stored in dry conditions (15-30°C)5 years
Abrasion ResistanceTest to Taber CS17 Wheels/1 Kg load138mg loss/1000 cycles
0.18cc loss/1000 cycles
AdhesionTensile Shear to ASTM D1002 on abrasive blasted mild steel with 75 micron profile208 kg/ cm² (2950 psi)
Compressive StrengthTested to ASTM D 695984kg/cm² 13,950psi
Corrosion ResistanceTested to ASTM B1175000 hours
Flexural StrengthTested to ASTM D790871kg/cm² 12,300ps
HardnessShore D to ASTM D224085
Heat DistortionTested to ASTM D648 at 264psi fibre stress20°C Cure 52°C
100°C Cure 75°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:
60°C
200°C
Acetic Acid 10% at 30˚C
Ammonia Hydroxide 30% at 45˚C
Benzene 100% at 35˚C
Butanol 100% at 40˚C
Chromic Acid 10% at 40˚C
De-ionised Water at 40˚C
Ethanol 100% at 45˚C
Hydrobromic Acid 40% at 30˚C
Hydrochloric Acid 36% at 35˚C
Nitric Acid 10% at 30˚C
Phosphoric Acid 75% at 45˚C
Steam out at 180˚C
Sulphuric Acid 98% at 40˚C
Toluene 100% at 40˚C
Xylene 100% at 40˚C

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

Additional information

Weight N/A
Unit Size

16ltr, 4ltr

Colour

Dark Grey, Red

Mixing Ratio

3:1 By Volume, 4:1 By Weight

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