Optical, Lighting, LED,
& Display Industry
Optical and lighting applications require adhesives that
offer minimum obstruction. They also need to be resistant to heat and other
factors that may degrade the adhesive quality over time. Silicone is just the
perfect material for optical coupling gels and lighting adhesives.
Exonic Polymers offers the best lighting silicone
adhesives and optical coupling gels in the industry. Our silicone adhesives are
ideal for optical, lighting, and display applications because of the unmatched
stability, flexibility, and heat tolerance that they offer.
Exonic Polymers has a wide range of lighting silicone
adhesives and thermally conductive adhesives for LEDs used in various
structural applications.
Why use special silicone adhesives for optical, lighting, and display
applications
High-quality lighting silicone adhesives and optical
coupling gels offer exceptional mechanical properties. Lighting equipment,
display equipment, and LEDs are sensitive and need to be protected from
damaging environmental factors. Silicon adhesives are tough enough to protect
such devices from damage. Silicone is known to be durable, resistant to impacts
and chemical reactions. Silicone adhesives have dielectric insulating
properties and can be thermally conducting at the same time.
All of these properties make silicone a perfect choice for
lighting and optical use.
Exonic Polymers offers
a range of high-quality silicon adhesive solutions
Exonic Polymers has catered to some of the largest OEM
companies with lighting and display adhesive solutions. Our silicone products
for optical applications include sealants, adhesives, encapsulating, and gels.
Exonic Ploymers' silicone adhesives and sealants offer excellent protection
against thermal stresses, mechanical shock, and vibrations.
Our silicone sealants and LED structural adhesives offer
superior weather-proofing, preventing the seepage of water, moisture, or gases
that are likely to damage the components.
Another major concern with optical and lighting adhesives
is their clarity over time. Exonic Polymers' range of optical coupling gels and
adhesives is guaranteed to provide superb optical clarity. Our LED structural
adhesives and lighting silicone products offer excellent transparency.
Many cheap and low-quality gels and adhesives provide
clarity at first, but they lose their optical properties with time. This affects
the aesthetics of lighting and becomes an obstruction, and reduces the
brightness of the lights and LEDs. Exonic Polymers' silicone products are
non-yellowing and retain their clarity for years on end.
Here's what Exonic Polymers guarantees with its silicone
gels, encapsulating, and adhesives. - Weather resistance
- High-temperature resistance
- Excellent optical transmission
- Hard setting
- Low shrinkage
- Shock and vibration resistance
If you are looking for optical adhesive and sealant
options, you could not find a better solution than Exonic Polymers.
Applications
Exonic Polymers has been helping OEM companies and many
small and medium industries with its optical silicone products. Some of the typical
applications where our silicone gels and adhesives can help are –
LED Protection and
Assembly applications
Exonic Polymers has a wide array of silicone products for
use in LED assembly and protection applications. These products are suitable
for all kinds of projects, including industrial, commercial, and residential
constructions. LED assembly and protection mostly requires four types of
silicone products –
- Gels
- Adhesives
- Encapsulating
- Conformal coating
These products can be used in every application that LEDs
are subjected to, including automotive lighting, backlighting for displays, and
other consumer products like cameras, torches, and more.
Exonic Ploymers' silicone LED structural adhesives deliver
optical clarity, stability, and light transmittance paramount in LED
applications. LEDs themselves are preferred for many big and small uses today
due to their high brightness, energy efficiency, and long-lasting performance.
In such a case, using the wrong adhesives or sealants can
reduce both the performance and the life of an LED. Exonic Polymers ensures
that our LED assembly and protection products do not dampen the LEDs'
performance at any cost. Our highly durable and non-yellowing thermal
conductive adhesives for LEDs add to the reliability of the end product.
Our LED assembly products line up includes – - Sealants
- Adhesives
- Encapsulants
- Gels
- Conformal coatings
Adhesives and sealants for LEDs
Adhesives are the silicone-based products we offer for
applications where LEDs are required to be held firmly together with other
surfaces. Exonic Polymers has a wide range of silicone and thermally conductive
adhesives on offer. From our Fast-Setting Neutral-Cure Silicone adhesives to
the Exonic Thermally Conductive Adhesive, there are a variety of options for
different purposes.
Sealants are materials used to fill a joint or a gap in a
structure to seal it against leakage and seepage. It prevents liquids or gases
from entering the gap. This is an essential material in electronic
manufacturing and assembly, including LEDs. Exonic Polymers also has a line of
high-quality sealants, from the Thermally Conductive Vibration-Dampening Liquid
Silicone Gap Filler to the Exonic Electrically Insulating - Sealing Silicone
Lubricant and more.
Our non-corrosive silicone adhesives and sealants can be
used for all electronic adhering, bonding, and sealing applications. The most
commonly seen use of our premium quality LED structural adhesives and sealants
are in – - Automotive LED lighting
- Architectural LED lighting
- LED projectors
- Outdoor LED display panels in stadiums, commercial establishments, billboards, etc.
- Traffic lights and more
The silicone and thermally conductive adhesives for LED by
Exonic Polymers offer the following benefits – - High bond strength
- Excellent adhesion to various surfaces,
including glass, plastics, wood, and more
- Excellent light transmission
- Minimum stress
- Resistance to elevated temperatures
- Non-yellowing properties
- Fast curing
Encapsulants and gels for LEDs
LED encapsulation is a very crucial step in both LED
assembly and packaging. Silicone encapsulating and gels are used to protect the
LED chip from outdoor environments. Many manufacturers earlier used epoxy as an
encapsulating material for LEDs. With the increasing popularity of silicone
encapsulation, epoxy is gradually becoming obsolete. Silicone has several
advantages over epoxy as an encapsulant. Silicone can be formulated to offer
different hardness levels categorized into gel, elastic, and hard types.
In most optoelectronic applications such as LEDs, the
elastic type is used for its high flexibility. Silicone also has higher thermal
and UV stability as compared to epoxy, which is essential for the new-age LED
products. Silicone undergoes no degradation from exposure to sunlight, high
temperatures, or LED's emissions. It helps maintain the performance of high
brightness LEDs for years without any deterioration in intensity.
Exonic Polymers offers various silicone encapsulating
products meant for applications that require a tough, clear, and durable
coating. We have the Exonic 2-Part Low Durometer Heat Cured Encapsulating
Coating that is a heat curing, high-strength silicone RTV adhesive for
applications needing a rugged, low durometer silicone rubber product.
We also have the Exonic 2-Part Vibration and Shock
Dampening Coating, a fast-curing rubber coating meant for shock proofing and
vibration isolation purposes. The 2-part silicone ensures super-fast curing and
allows the equipment to be ready for handling within minutes. Apart from these,
there is a range of other encapsulation and gel products for various industrial
and end-user applications.
Our encapsulants and gels' typical applications are in
outdoor LED panels, traffic lights, etc., where the exposure to moisture,
gases, and environmental stress is high. Our high-quality encapsulants and gels
provide –
- High transmittance across all wavelengths for
LEDs
- Excellent stress relief
- Protection against UV light
- High transparency
- Crack resistance
- Corrosion resistance
- Thermal management properties
Conformal coatings for LEDs
Conformal coatings are another form of protection for LED
circuits. Conformal coatings are used to extend the life of LEDs by protecting
them from adverse environmental conditions like humidity and UV light. They
prevent corrosion and leakage in high humidity or salty environments. Conformal
coatings are usually applied in very thin layers to minimize any shifts in the
color temperature of the LED. Conformal coatings, like all other silicone
products used with LEDs, should provide clarity and stability to ensure that
the light's intensity is not disturbed.
Conformal coatings are primarily required in environments
where exposure to pollutants like SO2 is higher. They should also be
thermally conductive as it is essential to remove heat from high-power LEDs to
maintain their performance and protect them during extended durations of use.
Good quality conformal coatings should be – - Resistant to thermal shock
- Resistant to moisture and selected chemicals
- Highly transmissive
- Light and thin
- Thermally conductive
- UV resistant
The right kind of conformal coating can significantly
increase the life of an LED. Exonic Polymers has an extensive range of silicone
coatings for various applications. The Exonic Conformal Coating - DC 3-1753 is
a perfect protective coating for rigid and flexible circuit boards. This
fast-curing, self-priming, one-part coating turns into a flexible, transparent
elastomer when cured. It is best suited for electronic printed wiring boards,
especially those that employ sensitive components.
The Exonic Self-Leveling Conformal Coating is a one-part
clear silicone RTV meant for conformal coating uses. It offers unprimed
adhesion to various surfaces, including metals and plastics. This product
combines high flexibility and a neutral oxime cure system to create a durable
silicone adhesive coating.
Apart from these, there are several other conformal
coating products to choose from depending on the application type. Our
conformal coating products are used in –
- Automotive LED lighting
- LED street lighting
- Traffic lights
- Outdoor visual displays, etc.
Optical coupling gels in
fiber optics
Apart from LEDs, silicone products are also extensively
used in other optical applications such as fiber optics. Optical coupling gels
are widely used in fiber-optic cables to hold together different materials
without creating a barrier to transmitting light signals through the line.
High-quality optical coupling gels can minimize the refraction of light by
matching the refractive index of the bonding materials. Optical coupling gels
can form solid mechanical bonds between the rigid mating parts.
Coupling gels are also elastic, allowing them to withstand
a considerable amount of differential thermal expansion usually seen in
composite materials such as fiber optic cables. They do not subject the
materials to excessive stresses and also protect them from delamination.
Optical coupling gels can help eliminate the fiber optic cable splices' losses
due to their high clarity and transmissivity.
Optical coupling gels can be used for several different
applications in fiber optics, including –
- Sealing of optical fibers into ferrules
- Potting of optical fiber bundles
- Bonding the optical fibers into bundles
- Forming splices
- For field repairs and more
Good optical coupling gels should have the following
properties –
- Excellent optical transmission
- Low shrinkage
- Higher glass transition temperatures
- Long-lasting performance
- Resistance to high temperatures and humidity
- UV resistance
Exonic Polymers offers all of these properties and more in
its range of optical coupling gels. The Exonic Non-Curing Optical Coupling Gel
is designed to minimize losses in fiber optic and electro-optical assemblies
owing to its high clarity and transparency. The ultraclean optical coupling gel
from Exonic is free of any light-absorbing particulates, giving high
transmissivity and no distortions. This optical coupling gel is chemically
stable, has a wide temperature range, and is non-toxic, making it safe for the
environment.
Exonic Polymers' silicone optical coupling gel is
guaranteed to increase fiber optic cables' life and maintain their performance
over the years. Our optical coupling gels find application in –
- Optoelectronics
- Fiber optics
- Optics
- Light sensing instruments
- Medical equipment
- Lens assemblies, etc.
Thermally conductive
materials for LED and lighting applications
Thermally conductive materials are among the most critical
interfaces in any lighting application, particularly in applications like high-power
LEDs. Materials with high thermal conductivity are capable of dissipating heat
better. Thermally conductive materials as adhesives or sealing agents are an essential
part of LED circuits. They can form a conductive surface between the LED chip
and the cooling system. Without a thermally conductive interface between these
two components, the gap between them is filled with air. Air is a poor
conductor of heat, which means that the heat is retained around the LED chip.
This heat can be damaging for the LED and reduce its performance over prolonged
use.
High power LEDs require effective heat management. To
extend the life of an LED, maintain its performance over time and reduce the
operating costs, it has to be held at a temperature below 1200C.
Thermally conductive materials can help overcome several
problems related to heat dissipation, affecting an LED's performance and
lifespan.
LED lifespan
Without proper heat dissipation, the life of an LED module
may be shortened. High junction temperatures degrade an LED's useful life,
color output, and intensity. A good thermally conductive material used with the
LED can increase the useful life of the module.
Color shift
LEDs without proper heat management tend to change color
temperature. The high junction temperatures cause a shift in the LED's color
towards the higher end of the light spectrum. So, white lights that ideally
emit blue wavelengths may shift to red wavelengths due to overheating.
Thermally conductive adhesives and sealants for LEDs can take care of this
problem as well.
LED performance
These factors contribute to the degradation of the
performance of LEDs that are not heat managed from the beginning. Using a
high-quality thermally conductive material to draw the heat away from the LED
chip can drastically improve its performance and energy efficiency.
This is where our thermal conductive adhesives for LED
applications come into use. The Exonic Thermally Conductive Adhesive is a
thermally conductive silicone RTV transfer adhesive rubber designed for heat
sink applications in LED and other lighting solutions.
The Exonic Thermal Joint Sealant is a high-temperature
sealing compound meant for effectively filling the gaps between heat sinks and
substrates. We also have the EX3-119 - Fast Cure Thermally Conductive Deep
Section Paste Silicone Adhesive. This product is a 2-part, Platinum cure
adhesive sealant that offers excellent thermal conductivity. The elastomer
resists weathering, ozone, moisture, UV, and high temperatures once it is
cured.
Exonic Polymers
solutions for every industry
Your business and the industry you operate in have their unique
requirements and demands. Be it the fast-growing automotive industry or the
rapidly evolving electronics sector, the need for high-quality, reliable
materials is common to all. Exonic Polymers understands the critical role that
materials play in the quality of your end products. This is what challenges us
to innovate and come up with new, cutting-edge developments in polymer
technology.
Our high-grade silicone adhesives and sealants have been setting
new standards in different industries, including automotive, transportation,
HVAC, building and construction, electronics, and others. Exonic Polymers
brings industry-specific expertise to its silicone products with the same
commitment of quality across its entire range of products.
Exonic Polymers strives to add more value for companies
through its standard, custom, and reengineered products. Our growing portfolio
of silicone products aims to meet the new demands that companies are faced with
in their path to new developments.
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