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LOCTITE® SF 7388™ – Activator for structural acrylic adhesives to accelerate curing in demanding bonding applications

  • Item Name: LOCTITE® SF 7388™
  • Manufacturer: Henkel
  • Product Category: Activator for toughened acrylic adhesives
  • Technologies: Solvent-based activator (Heptane/Isopropanol)
  • Applications: Promotes cure speed for LOCTITE® toughened acrylic adhesives
  • Color: Clear, yellow to amber with a greenish tinge
  • Cure Type: Not applicable (Activator)
  • Package Size: Contact Techniq VN for details.
  • Shelf Life: Contact Techniq VN for details.

1. Product Overview

LOCTITE® SF 7388™ is an activator designed for use with LOCTITE® toughened acrylic adhesives to promote curing. It is a clear, yellow to amber liquid with a greenish tinge and has a very low viscosity. The solvent base is heptane/isopropanol, and it does not require mixing.

2. Applications

  • Used for initiating the cure of LOCTITE® toughened acrylic adhesives.
  • Enhances fixture time and cure speed depending on adhesive type, substrate, and surface preparation.
  • Recommended for large gaps (>0.4 mm) or where maximum cure speed is required.

3. Typical Properties

Before Mixing

Property Value
Viscosity @ 25°C 1.5 mPa·s (cP)
On Part Life 15 minutes
Appearance Clear, yellow to amber liquid with a greenish tinge

After Mixing & Curing (Using LOCTITE® 330™)

Property Value
Fixture Time (PVC, ISO 4587, single-side activation) 65 to 105 sec
Lap Shear Strength (ISO 4587, Steel, grit blasted, 24h @ 22°C, single-side activation)
0 mm gap 17 N/mm² (2,465 psi)
0.5 mm gap 7 N/mm² (1,015 psi)

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