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LORD Corporation

With more than 3,100 employees in 26 countries, 19 manufacturing facilities and 10 R&D centers worldwide, we're there for our customers.

Our Company
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Thermal Management Materials

As electric vehicle technology evolves, so should your expectations. CoolTherm is the leader in thermal management materials. Our customizable products help EVs go longer, charge faster and have higher reliability by managing heat in batteries, chargers, motors and power electronics. Ready to think differently about heat? It’s time to experience a different kind of cool.

Thermal Management Materials

CoolTherm is the latest advancement in thermal management and infuses high-performance thermal interface materials with world-class service and support. Our team is highly responsive and specialized in custom formulations in the multiple chemistries to meet your performance, cost and schedule targets.

 

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Have questions? We'd love to hear from you.

Thermally Conductive Products

Gap Fillers
Our liquid-dispense, cure-in-place gap fillers remove heat from electronic components.
Thermally Conductive Structural Adhesives
CoolTherm adhesives couple high-bond strength with thermal conductivity for ease of use and cost-savings.
Potting & Encapsulation Materials
Optimize heat dissipation with high thermal conductivity and low viscosity.
Semiconductor Packaging
Die attach adhesives, encapsulants, underfills and thermal interface materials for assembly and packaging.

Solutions Dedicated to Improving Electric Vehicles

We’ve adapted to support the growing electric vehicle market and re-branded our thermal management materials under the brand-name CoolTherm®. This product line includes gap fillers, potting & encapsulation materials, thermally conductive adhesives and gels & greases.

Industries

While the core of our business is with automotive OEMs and tier suppliers of electric vehicles, our technology can help electrify a variety of other transportation and industrial types. If you're working on the future of electrification, contact our team to see how our thermal management materials can work in your unique design.

Industrial Equipment
Our solutions enable elecrification of backhoes, excavators, bulldozers, graders and other earthmoving and mining equipment. Electric equipment reduces noise and service times, and lowers emissions when compared to diesel engines.
row of electric buses
Bus

Electric buses are on the rise and many cities around the globe are transforming their traditional ICE or diesel fleets towards electrified transportation. Our thermal management materials can help enable fast-charging and wireless charging capabilities for these fleets.

small private plane on the ground ready for take off
Aerospace

Among electric aircraft, there is little standardization in the design of the most critcal component - battery packs. By working closely with our team, you will find a product for your toughest design challenges.

Featured White Paper

Battery Cooling Performance

Our data shows a clear advantage for liquid-dispensed gap fillers versus thermal gap pads when removing heat from battery modules. Learn from our experts in our latest white paper which compares gap filler and thermal pad performance on a prototype electric vehicle battery module.

EV Battery Cooling Performance
Gap Fillers versus Thermal Pads
In the quest to find the best thermal management material, battery manufacturers typically are drawn to one of two types of products: gap fillers or thermal pads. So, how do they differ?
How to Choose and Use Thermal Gap Fillers
Differences in cured and uncured properties affect how your gap filler performs, but how do you know what you need?

Downloadable Resources

For years, motor designers have been battling heat in motor designs. Download our white paper to read how potting your electric motor can yield improved performance, reliability, and efficiency.
Electric vehicles - including automobiles, buses, trains, off-road vehicles, watercraft, and aircraft are here to stay. A key challenge in developing higher-power-density electronics for electric vehicles and other applications is to manage the heat. This e-book covers topics crucial to thermal management in your applications.
Looking for something else?

Parker Solutions for Electric Vehicles

LORD is now part of Parker Hannifin, creating a combined organization with strong materials, engineering capabilities and innovative product offerings. Together, we're better.

 

Parker Hannifin has a wide portfolio of EV offerings.

FAQs

What is Tg?

The Tg (glass transition temperature) of a material is the temperature range where the material changes from a rigid polymer to a more elastomeric polymer. Some silicone products can have a Tg as low as -120°C, which means the material is soft and flexible down to a negative 120°C. Some epoxy materials can have a Tg above 200°C, which means the material maintains its high strength properties up to 200°C.

The glass transition temperature, Tg, of a material can be determined several ways; by measuring the material’s CTE over a temperature range using a thermal mechanical analyzer, by measuring the modulus of the material over a temperature range using a dynamic mechanical analyzer or by measuring the material’s specific heat over a temperature range using differential scanning calorimetry.

What is UL rating or certification?

UL certification is a symbol of trust. UL labs have developed comprehensive tests to determine the mechanical, physical and electrical characteristics of polymeric materials, ensuring that they are safe to use in electrical equipment. Several applicable UL standards govern the flammability requirements and other specific material behaviors of thermal management materials. After testing, a Performance Level Category (PLC) is assigned to the tested material. Three common UL standards CoolTherm materials meet are UL 94 Test for Flammability, UL746A for Polymeric Materials – Short Term Property Evaluations and UL746B for Polymeric Long-Term Property Evaluations. Conforming to UL standards is an important qualification for LORD thermal management materials. The certification not only ensures optimal safety, but long-term performance.

What is CTE?

The CTE is the coefficient of thermal expansion of a cured material. It is expressed as the amount of linear expansion per degree of temperature.

Example: If a material has a CTE of 30 ppm/°C, what is the expansion of this material for a 10.0 mm long piece that is taken from 25°C to 125°C? The material will expand by 0.03 mm, which is 10 mm x 100°C x 0.000030 mm/mm per degree C. The expansion rate is determined by the chemistry of the product and the filler content. In general, flexible products have a higher expansion rate and higher filled products have lower expansion rates. The CTE of a material will be lower at temperatures below its Tg and will be higher at temperatures above its Tg.

How do you increase cure speed (gap filler, potting material or adhesive)?

To increase the cure speed of most gap fillers, potting materials, and/or adhesives, increase the temperature of the part to which the materials are applied. This can be done using an oven, a heat lamp, or induction heating. Parts can be pre-heated to the desired temperature, or material can be dispensed first and then the part can be heated. It is a general rule of thumb that the cure speed will approximately double for every 10 degree Celsius increase in temperature. It is worth noting that, for rigid materials, increasing cure speed can increase the risk of generating a high internal stress in the material, which may degrade its mechanical strength and its ability to resist thermal and/or mechanical shock.

Are thermal materials electrically insulating?

Most thermally conductive potting materials, gap fillers, and adhesives are electrically insulating due to the use of oxide or nitride materials (such as aluminum oxide and nitrides of aluminum, boron, or silicon) as thermally conductive fillers. There are some thermal interface materials (TIMs) used primarily in the microelectronics industry that are somewhat electrically conductive due to use of metallic fillers, such as aluminum or silver. These TIMs are used primarily as underfills in low-voltage or electrically dissipative applications, as the materials do not have the high electrical conductivity of a wire bond or solder connection.

Are thermal interface materials electrically and thermally conductive?

Thermal interface materials, or TIMs, are all thermally conductive to some extent. TIMs can be either electrically insulating or electrically conductive, depending on the type of thermally conductive filler that is used. Electrically insulating TIMs generally use some form of ceramic or nitride material as the thermally conductive filler. Aluminum oxides are most common, though TIMs with aluminum nitride, boron nitride, or other more specialized fillers are available. The maximum thermal conductivity of electrically insulating TIMs is usually in the range of 5-7 W/m∙K. Some TIMs are somewhat electrically conductive and can be used in low-voltage or electrically dissipative applications. These TIMs use some type of metallic filler, generally either aluminum or silver powders alone or in combination with oxides, and can have higher thermal conductivity than electrically insulating TIMs (up to 12-15 W/m∙K).

What is a thermal interface material?

Thermal interface material (TIM) is a material that is used to transfer heat between two substrates.  Typically, a TIM is specific to materials dispensed in very thin bond lines and dispensed directly onto individual electronic components or between a heat spreader and a heat sink.  TIMs comes in 4 major classifications – adhesives, gels, greases, and gap fillers. Adhesives require curing, are not susceptible to pump-out, and are typically not reworkable due to their excellent adhesion.  Gels also require curing, are not susceptible to pump-out, and are reworkable.  Greases are reworkable and they do not require curing, which makes them susceptible to pump-out and phase separation.  Gap fillers are slightly harder and have thicker minimum bond lines than gels, but they share the other previously-mentioned properties with gels.

 

Why do I need a thermal interface material?

Even when two substrates appear to be in contact, there are tiny surface imperfections that are not visible to the naked eye and leave air pockets between the substrates.  When trying to transfer heat from an electronic component to a heat sink, the air between those substrates will act as a thermal insulator, meaning that the heat will not transfer quickly from the hot component to the heat sink, damaging the component and ultimately reducing its life.  Thermal interface materials, however, fill these tiny air pockets with a thermally-conductive material, allowing the heat to transfer quickly from the hot electronics to the heat sink.

 

What is thermal conductivity?

Thermal conductivity is a measure of a material’s ability to transfer heat.  It is presented as the variable “k” and is typically measured in the units of W/(m·K).  Breaking down the units, thermal conductivity is a measure of heat flow (W) over a distance (m) and across a temperature gradient (K).  The larger the temperature gradient or the shorter the distance, the faster that the heat will transfer.

CoolTherm®