corrosion resistance header
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metal-corrosion


Steel Enhancements

Used to improve the functional properties of a substrate on its
surface. Conventional coatings adhere to materials by simple
mechanical forces which can be easily broken causing peeling
or delamination. Such is not the case with chemical grafting
since the attachment of the coating is accomplished by forming
a covalent bond between the substrate and the monomers via
the substrate activator. The chemical reaction that takes place
provides subsurface penetration in addition to the chemical
bond. As a result, much thinner coatings can be obtained while
providing longer life and superior performance of the material.
Typical coating methods can be used i.e. dip, spray, roll. The
chemical grafting formulation comes in contact with the surface
of the substrate by any of these methods, The chemical
grafting reaction occurs instantaneously upon contact with the
material. The desired thickness and preferred application
method will determine the viscosity of the formulation. Most
formulations are water based. The coatings can be air dried,
however, heat (oven, IR, UV, etc.) may be used to accelerate
the drying time. Most formulations will dry in seconds to
minutes.


Adhesives
Sometimes two or more layers of various materials are
laminated together to achieve desired characteristics. A
generic adhesive used for all purpose applications may fail
especially when temperature changes occur. Again, these
conventional adhesives hold their substrates together by
mechanical means. In addition, failure of the bond will occur
during temperature fluctuations due to differences in
coefficients of thermal expansion. The adhesives developed by
APS use difunctional monomers and attach themselves to the
substrates by a helical bond. This helix allows the resultant
bond to move with the differences in the expansion and
contraction rates of the substrates. Even substrates that are
typically difficult to bond are activated and attached by this
means.
Painting, anodizing or plating metals are good ways to prevent
their corrosion. However, a more reactive metal in the
electrochemical series must be chosen for coating, especially
when chipping of the coating is expected. Water and the two
metals form an electrochemical cell, and if the coating is less
reactive than the coatee, the coating actually promotes
corrosion.   

Properties Grafted Onto Steel



Abrasion / Wear Resistance



Impact Resistance



Lubricity



Conductivity



Temperature Resistance



Color



Replacement of Plating