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Adhesives: Surface Preparation
The importance of
Surface Preparation
A premium tube of adhesive is no guarantee of
achieving an unbreakable bond. Before the adhesive
is even applied proper surface preparation should
take place. Unless surfaces are free of contaminants
like rust, water, oil, dirt and dust, bonding will be
sub-standard.
Degreasing, cleaning and priming
increases the surface energy of the
substrate and gives the adhesive a
larger contact area to bond to. Dirt
and other contaminants reduce the
surface energy of the substrate, so
using cleaners and degreasers is an
effective way to increase the strength
of your bond.
Cleaning & degreasing
the substrate
Your substrate may hold
contaminants from machining,
handling, protecting, manufacturing
www.rapidonline.com/loctite/cleaners-degreasersSF 770 Polyolefin
Primer
Loctite 770
is a cyanoacrylate
primer
for making polyolefin and other low
energy surfaces
suitable for bonding
with Loctite cyanoacrylate adhesives. Its
use is recommended for difficult to bond
substrates like polyethylene, polypropylene,
polytetrafluoroethylene (PTFE) and
thermoplastic rubber materials.
Not recommended for use in assemblies where high peel
strength is required.
Contents
Order code
1+
10g
87-0401
14.78
300g
87-7337
68.99
565407
SF 7455 Tak Pak
Activator
Loctite SF 7455
is a colourless, amine-
based
accelerator
used to increase the
cure speed of cyanoacrylate adhesives and
can be applied before or after the bond to
ensure
rapid fixturing
. Used for securing
wires or coils to PCBs, tamper-proofing
adjustable components, mounting stand-
offs, edge guides, etc, it can also bond
dissimilar materials such as metals, glass
or ceramics.
Contents
Order code
1+
25ml
63-1096
8.99
150ml
87-7335
9.89
565507
SF 7452 Tak Pak
Activator
Loctite SF 7452
is a transparent light
amber
accelerator
for the increased cure
speed of
cyanoacrylate adhesives
. It can be
either pre- or post-applied and is especially
suited for post-application on cyanoacrylate
adhesive to ensure rapid fixturing.
Typical applications include securing wires
or coils to PCBs, tamper-proofing adjustable
components, mounting stand-offs, edge
guides and board stiffeners.
Contents
Order code
1+
500ml
87-7333
30.69
565506
SF 7457 Tak Pak
Activator
Loctite SF 7457 142747 is used
where increased cure speed of Loctite
cyanoacrylate adhesives is required.
It can be applied to the bond before or
after assembly. When used pre-applied, its
presence can be detected by fluorescence.
Type
Order code
1+
150ml Superglue activator
87-0403
12.59
561754