LOCTITE® SF 7239 is a specialized solvent-based primer that promotes adhesive performance and improves bonding efficiency on low-surface-energy plastics.
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.
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
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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