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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.
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.
Watch: Our Plating Replacement Video
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.
| Advanced Polymer Solutions 99 Seaview Boulevard, Port Washington, NY 11050 (516) 621-5800 Email:info@advancedpolymersolutions.com Get Directions |
Advanced Polymer Solutions has fine-tuned a unique
process of chemical grafting which allows manufacturers to
permanently add or improve the performance of a material
whle retaining its existing characteristics. This process
involves substrate activation, and the attachment and
polymerization of monomers that contribute the desired
properties onto the backbone of the substrate using safe,
effective organic chemicals. Because a covalent bond is
formed, the molecularly bonded formulation is permanent
and cannot be leached, even under severe conditions.
Grafted Properties
Replacement of plating, corrosion resistance, lubricity, wear
and abrasion resistance, conductivity or insulative
properties, color, etc.
Our Specialized Services
Each project is treated on an individual basis by formulating
the desired coating, additive or adhesive according to
specific requirements. Because of its easy adaptation to a
wide variety of applications, chemical grafting has been
utilized in virtually every industry including automotive,
aerospace, industrial machinery, consumer products,
medical, packaging, and many others. In order to obtain the
chemically bonded product, new formulation are applied to
the submitted substrate and tested according to the
recommended procedures dictated by industry standards
and manufacturer's requests. Once reproducible results are
secured, the formulation is adapted to large-scale
production at the manufacturer's location. To provide
ongoing support, APS can manufacture the final formulation
in the desired quantities and supply the manufacturer with a
pre-mixed, ready to use coating, additive or adhesive.
Metals are usually inclined to form cations through electron
loss,[6] reacting with oxygen in the air to form oxides over
various timescales (iron rusts over years, while potassium
burns in seconds). Examples:
4 Na + O2 → 2 Na2O (sodium oxide)
2 Ca + O2 → 2 CaO (calcium oxide)
4 Al + 3 O2 → 2 Al2O3 (aluminium oxide).
The transition metals (such as iron, copper, zinc, and nickel)
are slower to oxidize because they form passivating layer of
oxide that protects the interior. Others, like palladium,
platinum and gold, do not react with the atmosphere at all.
Some metals form a barrier layer of oxide on their surface
which cannot be penetrated by further oxygen molecules
and thus retain their shiny appearance and good
conductivity for many decades (like aluminium, magnesium,
some steels, and titanium). The oxides of metals are
generally basic, as opposed to those of nonmetals, which
are acidic. Blatant exceptions are largely oxides with very
high oxidation states such as CrO3, Mn2O7, and OsO4,
which have strictly acidic reactions.
process of chemical grafting which allows manufacturers to
permanently add or improve the performance of a material
whle retaining its existing characteristics. This process
involves substrate activation, and the attachment and
polymerization of monomers that contribute the desired
properties onto the backbone of the substrate using safe,
effective organic chemicals. Because a covalent bond is
formed, the molecularly bonded formulation is permanent
and cannot be leached, even under severe conditions.
Grafted Properties
Replacement of plating, corrosion resistance, lubricity, wear
and abrasion resistance, conductivity or insulative
properties, color, etc.
Our Specialized Services
Each project is treated on an individual basis by formulating
the desired coating, additive or adhesive according to
specific requirements. Because of its easy adaptation to a
wide variety of applications, chemical grafting has been
utilized in virtually every industry including automotive,
aerospace, industrial machinery, consumer products,
medical, packaging, and many others. In order to obtain the
chemically bonded product, new formulation are applied to
the submitted substrate and tested according to the
recommended procedures dictated by industry standards
and manufacturer's requests. Once reproducible results are
secured, the formulation is adapted to large-scale
production at the manufacturer's location. To provide
ongoing support, APS can manufacture the final formulation
in the desired quantities and supply the manufacturer with a
pre-mixed, ready to use coating, additive or adhesive.
Metals are usually inclined to form cations through electron
loss,[6] reacting with oxygen in the air to form oxides over
various timescales (iron rusts over years, while potassium
burns in seconds). Examples:
4 Na + O2 → 2 Na2O (sodium oxide)
2 Ca + O2 → 2 CaO (calcium oxide)
4 Al + 3 O2 → 2 Al2O3 (aluminium oxide).
The transition metals (such as iron, copper, zinc, and nickel)
are slower to oxidize because they form passivating layer of
oxide that protects the interior. Others, like palladium,
platinum and gold, do not react with the atmosphere at all.
Some metals form a barrier layer of oxide on their surface
which cannot be penetrated by further oxygen molecules
and thus retain their shiny appearance and good
conductivity for many decades (like aluminium, magnesium,
some steels, and titanium). The oxides of metals are
generally basic, as opposed to those of nonmetals, which
are acidic. Blatant exceptions are largely oxides with very
high oxidation states such as CrO3, Mn2O7, and OsO4,
which have strictly acidic reactions.
Metal Coatings & Plating Replacement
Metal Coatings
Plating Replacement
