The electronics industry is largely dependent on
materials. Electronics is a fast evolving sector and the demands of this
industry are constantly changing. Using the right materials is essential to
ensure the performance and quality of the end products in the electronics
business. Not just the components but other materials such as adhesives,
sealants, insulation, or encapsulation too play a major role in delivering
quality and performance.
Exonic Polymers has been catering to the ever-rising needs
of the electronics industry for quality silicone products, for years. Several
companies rely on the electronic grade silicone adhesive sealants, gels,
coatings, and potting products from Exonic for their manufacturing and repair
Why use silicone products
for electronics manufacturing, rework, and repairs
Silicone products are widely used in electronics for
various purposes like sealing, bonding, encapsulating, and coating of
components. Electronic circuits are used in a wide range of applications,
starting from computers to mobile phones to even aerospace applications. Being
exposed to such varied environments, electronic components are often subjected
to extreme temperatures, pollutants, contaminants, shocks, and impacts.
Sensitive electronic components can be easily damaged under harsh conditions.
Silicone products have played a major role in protecting
sensitive electronic components from such factors for a long time now. Silicone
products are used to coat and seal electronic components to protect them from
moisture, heat, dust, and contaminants.
The molecular structure of silicones is different from
other organic polymers which deliver certain properties to silicone products
not seen in any other similar compounds. The stability and high binding energy
of the siloxane bonds in silicone make silicone products more flexible and
stable at higher temperatures.
Apart from this, silicones have a host of other properties
that makes silicone for electronics a very suitable match. Silicones can form a
strong bond with almost any surface. They have high dielectric strength, a
comparatively low dielectric constant and have excellent electrical insulating
Silicones are extremely durable and can withstand extreme
conditions like high temperatures, UV radiation, high humidity, etc. with
little or no change to their mechanical and electrical properties. Certain
properties of silicones can actually be controlled by making slight changes to
their chemical composition, to meet specific requirements.
All of these factors, make silicone products suitable for
protecting and enhancing the performance of electronics. Some of the most
noteworthy properties of silicone compounds can be listed as –
High temperature and humidity resistance
Strong adhesion to many surfaces
Good wetting capabilities
Exceptional electrical insulation and dielectric
Low toxicity as compared to other similar
The silicone products from Exonic Polymers, including our
range of RTV for electronics or electronic grade silicone products, have all of
these properties that are expected of high-quality silicone.
Silicones for sealing and
Silicones have long been used in various electronic
applications for bonding and sealing. Despite the wide range of adhesive and
sealing products available in the market, silicone adhesive and sealants for
electronics have made a name for themselves. Silicone products are known to
have very high resistance to temperature and are highly flexible. Silicones in
general can withstand temperatures within the range of -550C to 2000C.
Certain specially designed formulations can withstand even higher temperatures,
ranging up to 3000C as well.
In most electronic applications, adhesives and sealants
that can maintain their bonding properties and strength at elevated
temperatures are a priority. This makes electronic grade silicone the best
choice for such applications.
Flexibility is another very essential characteristic in
adhesives and sealants for electronics. Flexible circuit boards, wiring, and
many components need bonding materials that do not restrict their elasticity.
In this regard, there is no better material than silicones. Silicone products
remain flexible even after curing. There are different curing options available
as well. Some silicone adhesives and sealants can cure at room temperature
while some others may be heat cured.
Electrically conducting silicone adhesives can be used in
place of solder for attaching components in an electronic circuit. Thermally
conductive silicone products are equally useful and can be used to bond heat
generating electronic components to heat sinks for efficient cooling.
Exonic Polymers electronic
grade silicone adhesives and sealants
Exonic Polymers is a one-stop shop for high-quality
electronic grade silicone products. We work closely with businesses in the
electronics industry to bring them complete solutions in silicone products
including adhesives, sealants, coating, and potting products. Our range of
sealing and adhesion products helps meet a number of handling and performance
requirements in electronic circuit manufacturing.
Depending on the required manufacturing process, curing
conditions, and desired properties the type of RTV silicone for electronics
best suited for the specific application can be selected. Our range of silicone
adhesives and silicone sealants for electronics facilitate secure electrical
connection and provide structural strength to circuits increasing their useful
The Exonic Self-Leveling - Neutral Cure Adhesive is a
one-part silicone RTV designed for sealing and coating applications in various
industries, including electronic manufacturing and assembly. This neutral cure
adhesive can provide unprimed adhesion and sealing to concrete joints, wood,
several metals, and plastics.
The Exonic Fast Cure - Fast Adhesion Onset Silicone RTV
Adhesive is perfect for applications that need a quick-drying and curing
adhesive solution. In applications where a component of the circuit needs to be
ready for handling faster, this quick setting adhesive can come in very handy.
The EX3-107 - Exonic Industrial Multi-Purpose RTV Silicone
Sealant is a 1-part acetoxy RTV silicone sealant. It is a multipurpose sealant
that can be used for sealing, gasketing, and other critical bonding applications.
There are various other electronic silicone adhesive and
sealant solutions available at Exonic Polymers to fit the different
requirements of different companies. Some of the properties of Exonic Polymers’
silicone adhesives and sealants include –
High bond strength
Extreme temperature resistance and
High elasticity for use on flexible surface
Neutral curing options suitable for use on metal
Excellent weather and chemical resistance
Some common applications where Exonic Polymers’ silicone
adhesives and sealants have proved to be of excellent use are –
Printed circuit board assemblies
Electronic component repairs
Transformers, power supplies, and sensors
Membrane switches and more
The advanced formulation of products at Exonic Polymers
provides a solution for every kind of electronic manufacturing, assembly, and
encapsulation and potting
Electronic components are generally very delicate and are
easily damaged when subjected to harsh environments. But the applications of
electronics are such that these components often have to work in high
temperature, high stress, and contaminated conditions. That is why electronic
components and circuits need to be well protected. Potting and encapsulation
help protect electronic components by creating a barrier between the
environment and the sensitive components.
Potting refers to the method of filling any small gaps or
spaces between components with the aim of protecting them from physical or
environmental damage. The gaps are usually filled with a polymer such as
silicone. Potting can also provide additional insulation in some applications.
Encapsulation is a similar process where the electronic component is
encapsulated in a polymer material for protection from external factors.
When it comes to protecting electronic components, there
could be no better material than electronic grade silicone. Silicone has all
the properties that are needed for providing efficient protection to
components. Silicone products are soft and flexible. They are resistant to
extreme temperatures, chemicals, and moisture. Silicones can also provide
electrical insulation. All of these properties make silicone the most suitable
material for electronic potting and encapsulation.
Silicone potting and encapsulation are often used in
applications where efficient thermal and electrical insulation are required.
Silicone can also be made to conduct heat and electricity by making changes to
the composition. In applications where heat dissipation is paramount, thermally
conductive silicone potting and encapsulation may be used.
Silicone-based potting and encapsulation such as glob tops
help protect wire bonds and sensitive bare die as well. These potting and
encapsulations are quite flexible and do not apply any stress to the
components. Being resistant to mechanical shocks and vibrations, the silicone
can also protect electronic components from damage due to such impacts.
Silicone potting and
encapsulation materials from Exonic Polymers
Exonic Polymers has an extensive portfolio of silicone
products that include gasketing sealants for electronics, encapsulating
coating, vibration and shock dampening coating, and more. We have products to
suit various use types and requirements with different curing conditions and
speeds. Exonic Polymers offer some of the best encapsulating and potting
materials available in the market today.
The Exonic 2-Part Low Durometer Heat Cured Encapsulating
Coating, for instance, is a heat curing, high strength silicone RTV adhesive.
It is designed for use in applications where a tough clear, low durometer
silicone rubber product is required. The 2-part silicone cures very fast and
allows handling of the components in no time.
The Exonic 2-Part Vibration and Shock Dampening Coating is
a fast-curing rubber coating that is engineered for protection against shock
and vibration. It is suitable for applications where shock dampening and
vibration isolation are crucial. It is also a 2-part silicone product which
when cured, allows handling of the parts within minutes.
The Exonic 2-Part Liquid Silicone Encapsulation - GE RTV
8112 is another fast-curing liquid silicone rubber RTV-8112 offset. It is also
developed for various electronic potting and encapsulation applications.
There are several other products meant for a wide range of
applications in our product portfolio. All our potting and encapsulation
products exhibit the following properties –
Excellent heat management properties
Low coefficients of thermal expansion
Extreme temperature serviceability
Mechanical shock resistance
Thermal cycling resistance
The silicone potting and encapsulation products from
Exonic Polymers have been used with great results in the following applications
Circuit board protection
Automotive electronics, etc.
Exonic Polymers is constantly upgrading its formulations
and technology to meet the new, upcoming demands of customers from the
Silicones as a
conformal coating for electronics
Conformal coatings can play several roles in the
electronics industry. A conformal coating may be used to isolate and insulate
the components on a printed circuit board. It may also be used for protecting
components from physical and environmental damage. Conformal coatings can
prevent components from being damaged due to exposure to moisture, corrosive
elements, extreme temperatures, or mechanical stresses.
Conformal coatings are usually applied as a thin,
uniformly spread layer at the end of a circuit board manufacturing or assembly.
The coating strongly bonds with the material of the board and covers all the
components on it. It can be an excellent protection against short circuits and,
thus, increases the life of the circuit board.
Conformal coatings need to have appropriate viscosity and
excellent adhesion so that they can flow easily and conform to the contours of
the circuit. Fillip up all the empty spaces and gaps between components.
Silicone-based conformal coatings are transparent and clear allowing you to see
all the components on the electronic assembly despite the coating.
Silicone is again the preferred material for conformal
coatings owing to its dynamic properties. The flexible silicone elastomeric
coatings can be applied in a much thicker layer as compared to epoxy coatings.
It offers a higher level of protection, particularly in applications where
vibration and shock damping are essential. Silicones are also easier to rework
as compared to other materials, making silicone conformal coatings a more
viable choice. Silicone-based conformal coatings prevent any kind of mechanical
or electrical interference in the circuit.
Conformal coating from
Exonic Polymers is a well-known and reputed supplier of
silicone conformal coatings catering to various companies in the electronics
industry. Our conformal coating products are also being used in the automotive,
consumer electronics, HVAC, and other industries.
Our widely used and appreciated silicone coating products
include the Exonic Self-Leveling Neutral Cure Silicone Adhesive Coating which
is a one-part self leveling silicone RTV meant for coating applications. This
product provides unprimed adhesion to several metals and plastic surfaces. This
is a heat resistant silicone adhesive that, when cured, turns into a very
durable silicone adhesive coating. It is a high heat silicone elastomer that
can resist weathering, and reactions to moisture, UV, ozone, and high
We also have the Exonic Conformal Coating - DC 3-1753
which is a protective coating material meant for rigid and flexible circuit
boards. It is a fast-curing, self priming conformal coating that cures into a
flexible and transparent elastomer. This conformal coating product is best
suited for printed circuit board applications, especially those using sensitive
The Exonic Self-Leveling Neutral Fast Cure Silicone
Adhesive Coating is used in thin coating applications. It is known to offer
excellent unprimed adhesion to many surfaces including metals and plastics. The
cured coating is resistant to ozone, UV, moisture, and other environmental
These are just a few of the products from our
silicone-based conformal coating catalog. There is a range of other products as
well for a wide variety of applications. All our silicone coating products are
Resistant to moisture and salt water
Resistant to corrosive gases
Resistant to extreme temperatures
Less viscous for easy flow
Optically clear and transparent
Our low viscosity conformal coatings can be easily
dispensed with any surface defects, air bubbles, or gaps in flow, giving a
perfect finish to the coating. Exonic Polymers’ electronic grade silicone
coating products have good wetting characteristics, high durability and
strength, low shrinkage, and very low outgassing. These coatings can easily
cover edges and corners on a circuit board and are extremely light weight.
Some common applications where Exonic Polymers silicone
coatings have been used include –
Inverter PCB coatings
Control panel insulation
ECU coating in automotive
Circuit and terminal protection in aviation
Microelectronic packaging, etc.
Our conformal coatings have helped increase the
reliability of electronic panels and protected them from harsh environmental
conditions. The high-quality conformal coatings from Exonic Polymers extend the
lifecycle of products and improve the performance of the end products.
Exonic Polymers also has a range of other products
including thermally conductive sealants and adhesives, silicone gels, silicone
greases, and more. All of our products have been helping electronics
manufacturers and other consumer goods companies deliver quality products.
Exonic Polymers for every need
The electronics market comprises not just electronics
manufacturing and assembly. It is associated with a host of other industries,
including the telecommunications industry, automotive sector, computer
industry, defense, avionic, aerospace and so much more. The application of our
silicone products is, thus, not limited to the electronics industry alone.
Exonic Polymers has been catering to various industries,
meeting their requirements for high-quality electronic grade silicone adhesive,
sealant, and coating materials. Apart from our world-class standard products,
we also offer custom and reengineered solutions to meet the unique
industry-specific needs of our various clients.