Devcon DFense Blok 30 lb



Devcon DFense Blok 30 lb

Alumina Ceramic bead filled epoxy
system with outstanding abrasion
resistance for severe service conditions.

  • Repairs to ash handling systems
    and scrubbers
  • Prevents wear on metal surfaces that
    are exposed to severe abrasion and
    erosion such as chutes and launders
  • Non sagging formulation
  • Protecting flanges and elbows
  • Lining bins and hoppers


A 5mm thick section of DFense Blok will harden at 25ºC in
4-5 hours. The material will be fully cured in 16 hours. The
actual cure time of epoxy is determined by the mass used
and the environmental conditions at the time of repair

Proper surface preparation is essential to a successful
application. The following procedures should be considered:
  • All surfaces must be dry, clean and with a suitable profile
    to facilitate bonding to the substrate.
  • If surface is oily or greasy use Devcon Fast Cleaner 2000
    Spray/Cleaner Blend 300 to degrease the surface.
  • Remove any existing paint, rust or other contamination
    from the surface by abrasive blasting or other mechanical
    techniques. Further reference can be made here to the
    Devcon Metal filled user guide.
  • Aluminium repairs: Oxidation of aluminium surfaces will
    reduce the adhesion of an epoxy to a surface.
    This film must be removed before repairing the surface,
    by mechanical means such as grit-blasting, abrading or
    chemical means.
  • Provide a “profile” on the metal surface by roughening the
    surface. This should be done ideally by grit blasting (8-40
    mesh grit), or by grinding with a coarse wheel or abrasive
    disc pad. An abrasive disc may be used provided white
    metal is revealed. Do not ’feather edge’ epoxy materials.
    Epoxy material must be ’locked in’ by defined edges and
    a good 3-5 mil profile.
  • Metal that has been handling sea water or other salt
    solutions should be grit blasted and high pressure water
    blasted and left overnight to allow any salts in the metal
    to ’sweat’ to the surface. Repeat blasting may be
    required to ’sweat out’ all the soluble salts. A test for
    chloride contamination should be performed prior to
    any epoxy application. The maximum soluble salts left on
    the substrate should be no more than 40 ppm (parts per
  • Chemical cleaning with Devcon Fast Cleaner 2000 Spray/
    Cleaner Blend 300 should follow all abrasive preparation.
    This will help to remove all traces of sandblasting, grit, oil,
    grease, dust or other foreign substances.
  • Under cold working conditions, heating the repair area
    to 38ºC-43º C immediately before applying any of
    Devcon Epoxies is recommended. This procedure dries
    off any moisture, contamination or solvents and assists
    the epoxy in achieving maximum adhesion to the substrate.
  • Always try to make the repair as soon as possible after
    cleaning the substrate, to avoid oxidation or flash rusting.
    If this is not practical, a general application of FL-10 Primer
    will keep metal surfaces from flash rusting.

If abrasive blasting is not possible and expanded metal
cannot be welded in place then the Surface Wetting Agent
is essential where maximum adhesion to substrate is
required. This should be applied at 250 to 500 microns
after which the DFence Blok can be applied immediately.
For bridging large gaps or holes it is essential to place fibreglass sheet, expanded metal or other suitable mechanical
fasteners across the area prior to application of the DFence

Add the hardener to the resin then mix thoroughly
using a suitable mixing paddle or suitable size jiffy type
mixer. Mix in such a fashion that the material is thoroughly
dispersed from top to bottom of the container until

Spread the material over the prepared surface with a putty
knife or spatula pressing firmly into all cracks and voids to
ensure maximum surface contact and avoid trapping air.
A film of at least 5mm and up to 15mm can be applied in
one coat if required even onto vertical surfaces without
sagging. If a coat of greater than 15mm is required then it
is important to let the first coat cure partially until firm such
that the a subsequent coat can be applied.
For overhead applications it is possible to build 10mm in
one coat, again if more is required then it is important to
leave it to cure to firm before subsequent applications.

A shelf life of 3 years from date of manufacture can be
expected when stored at room temperature (22ºC) in their
original containers.

For complete safety and handling information, please refer
to Material Safety Data Sheets (MSDS) prior to using this

ITW Performance Polymers will replace any material found to
be defective. As storage, handling and application of this
material is beyond our control we can accept no liability
for the results obtained.

Read more about Devcon products

Videos for Devcon DFense Blok Impact Test
Distributor for devcon in South East Asia
Devcon Distributor for Singapore
Devcon Distributor for  Cambodia
Devcon Distributor for Brunei
Devcon Distributor for Cambodia
Devcon Distributor for Myanmar
Largest Stockist for devcon products.
Read More Read Less
Products dan Adhesive / Sealant



Products Brand

You may also like