LOCTITE® SF 7239 is a specialized solvent-based primer that promotes adhesive performance and improves bonding efficiency on low-surface-energy plastics.
Chemical type: Organic amine derivative
Solvent: Heptane
Appearance: Colorless
Specific Gravity @ 25°C: 0.68
Viscosity @ 20°C, mPa.s: 1.25
Flash point (COC), °C: ─1
Drying time @ 20°C, seconds: 30
On part life, minutes: 10;
LOCTITE® SF 7239 is a surface treatment product designed to enhance the bonding of instant adhesives on low-energy plastics, like polyolefin, thermoplastic rubber, and more. It is formulated with a colorless, solvent base that exhibits a good aesthetic appearance for bond lines and good 'on-part-life'. LOCTITE® SF 7239 is especially suited for bonding with LOCTITE® cyanoacrylate adhesives acting as an activator and accelerator. 24 hours at room temperature should be allowed after application for full bond strength to develop.
LOCTITE® SF 7239 is not recommended in assemblies where high peel strength is required.
Poor aesthetic appearance of bond lines
Poor bonding performance on low surface energy plastics
Bonding to polyolefin, thermoplastic rubber, low surface energy plastics, and more
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