M-CHEM 300 Data Sheets for Download

Maxkote M-CHEM 300 - TDS

Maxkote M-CHEM 300 Base - SDS

Maxkote M-CHEM 300 Activator - SDS

Application Guide

Surface Preparation - Steel

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.

Surface Preparation - 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.

Surface Preparation - 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.

Environmental Checks

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.

Mixing

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.

Product Application - 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.

Product Application - 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.