Liquid Metal Epoxy Coating

How to protect pipework using Liquid Metal Epoxy Coating

Liquid Metal is a two-part epoxy coating which the user mixes with a stirrer before coating onto pipework and other equipment requiring protection using a brush.

The pipework requiring protection should be clean and free of paint, rust and grime. Roughening up the pipe either through grit blasting or grinding with a coarse wheel or abrasive disk pad improves adhesion.

Liquid Metal is applied immediately after preparation. The user mixes Part A and Part B at a 3:1 ratio by volume or 5:1 ratio by weight.

For convenience, there is enough room in the Part A container to empty Part B directly into it. This allows the user to mix and apply Liquid Metal straight from the pack.

The two contrasting colours blend into a uniform grey to indicate successful mixing. The user then brushes the epoxy coating onto the area requiring protection. Each coating should be 0.5-1.00mm thick. Applying at least two coats ensures a pinhole-free coating.

Liquid Metal has a work time of 90 minutes. The re-coat time is approximately four to six hours. It achieves a full cure with maximum properties 24 hours after the final coat.

Full instructions for surface preparation and how to apply Liquid Metal come with the product and are available on the TDS. Liquid Metal is easy to machine after curing. It is virtually odourless, with no unpleasant smell.

To determine the quantity of Liquid Metal needed to protect a specific pipe based on outside diameter, please go to the Repair Calculator Tab and enter your repair data.

The maximum temperature resistance of Liquid Metal is 150°C when post-cured. Instructions for post-curing are on the TDS. For pipe protection where temperatures exceed 150°C, please contact Sylmasta about Liquid Metal High Temperature.

Reinforcement with SylWrap Composite Bandage

Sylmasta recommend reinforcing pipe repairs made with Liquid Metal by overwrapping the final layer of epoxy coating after it has gelled but still remains tacky with a composite wrap like SylWrap HD Pipe Repair Bandage.

SylWrap HD is a water-activated composite wrap. It sets rock-hard in minutes to form an impact resistant layer of protection covering Liquid Metal, strengthening the repair by further increasing the outer thickness of the pipe.

Liquid Metal Epoxy Coating Applications

• Protecting metal and plastic pipes in industry from external corrosion and chemical attack
• Forming an impermeable membrane around pipework which contains content in the event of internal corrosion breaching the original pipe wall
• Increasing adhesion between composite wraps and pipework for stronger, more effective repairs

Benefits of Liquid Metal Epoxy Coating

• Easy to mix and apply – simply brush onto pipework
• 90 minute work time means the user can mix more Liquid Metal at once for protecting large sections without fear the coating will cure off before application is complete
• Cured material is easy to machine
• Makes PCC-2 compliant repairs when used with SylWrap HD

Technical Data

• Mix Ratio:
  5:1 weight.
  3:1 volume.

• Gel Time:
  90 minutes.

• Re-coat Time:
  4-8 hours.

• Full Cure:
  24 hours after final coat.

• Thickness Per Coat:
  0.5mm-1.0mm.

• Shore D Hardness:
  >80 (24 hour full cure).

• Tensile Strength:
  28 MPa.

• Compressive Strength:
  59 MPa.

• Flexural Strength:
  58 MPa.

• Density:
  1.55 (gm/cm³).

• Heat Distortion:
  50°C cured at room temperature.
  117°C post cured.

• Maximum Service Temperature:
  150°C.

Full TDS Downloads