Choosing the right thermal compound depends on the final application and it is not unusual to have different materials depending on the thermal needs.
Also, thermal conductivity on paper is “theoretical”. We have tested Coolmag against products with theoretically higher conductivities, where Coolmag has given much better results. Why? Because thermal conductivity is an indicative value that depends on many factors, like :

• Application. A material of very high conductivity applied incorrectly, with air bubbles inside, is useless
• Particle size/viscosity : Large particle sizes give good conductivities, but could limitate the ability to flow into very narrow gaps. Coolmag is an optimal combination of different particle sizes.
• Diffusivity: Related to cinetics. It is how “fast” the material can transport heat and depends on the nature of the material/fillers (it is related to the density and the specific heat capacity), so the know-how when selecting the thermal loads makes the difference!
• Diffusivity: Related to cinetics. It is how “fast” the material can transport heat and depends on the nature of the material/fillers (it is related to the density and the specific heat capacity), so the know-how when selecting the thermal loads makes the difference!

And, for sure, to compare Coolmag with other products with higher conductivities, it is crucial to analyze the relation € / ºC. Higher conductivity products normally are much more expensive and the final performance (temperature decrease) doesn’t makes the difference.

First question should be: Do I have thermal management /temperature issues? PU and epoxy resins have been historically mostly used potting resins.
But those chemistries are rigid and they can’t manage the thermal expansion of the materials , so the system’s temperature increases and materials collapse and crack .
Silicones are much softer and absorb these dilations without contributing negatively.
Anyway, If there’s no thermal need involved or and adhesive is needed, Coolmag PU is the right choose.

Most of the products used today in potting are bicomponent and potting machines are affordable.

Also working with 2K compounds has some interesting benefits:

• Long time storage : There’s no curing process between A+B components until they are in contact. Autoreticulable materials can start reacting under non controlled conditions (temperature variations, humidity, sunlight, etc).
• In some cases, subproducts may be generated during the curing process and can affect the electronic components(condensation silicones)
• Coolmag cures in 1:1 ratio, unlike other two-component resins , very difficult to manage in the production process (10:1, 100:1.)

The best way to apply Coolmag products is by injection so air is eliminated.

The process is simple and requires very few tools (a 3D mold and an air gun) for optimal results.

So high viscosity (that is also related to the high thermally conductive filler concentration) is not an excuse anymore!

Anyway, If casting is the only option available, our low viscosity Coolmag SA 10 is the right one!

There’s no need to invest in a new potting machine .

We take care of the hole process, from prototype to industrialization. We can do the potting service for you or we can offer you our own certified Coolmag potting maching under a rental agreement .

This is what we call Coolmag As A Service.

We got a low viscosity product , COOLMAG SA 10 that can be applied by pouring.

But optimal results are always achieved by injecting the material, eliminating the air that may be trapped inside the device. And that is achieved with pressure, injecting.
The process is very simple and requires very few tools (a 3D mold and an air gun) for optimal results. Nowadays with the means that exist, to renounce this type of applications for viscosity is to renounce solutions of high thermal conductivity in which the application is no longer a problem.

What temperature resistance does it have? T max Work, time.

Coolmag passes an accelerated aging test at 200ºC, 3 weeks without changes in its properties.

It also overcomes freezing cycles in liquid nitrogen with the same result.

Coolmag is an addition silicone. When the components are mixed together, a chemical reaction is initiated but no other chemicals are involved or produced.

Coolmag 29LV has the Outgassing certificate (known as NASA)

We take care of the hole process, from prototyping to industrialization. We can do prototype injection and if the product is approved, we can do the pottting service for you or we can offer you our own certified Coolmag potting maching under a rental agreement .

This is what we call Coolmag As A Service.

No, neither its temperature nor its volume change during the curing process.

Unlike other potting resins, Coolmag is not an adhesive, so it could be removed or teared up if necessary, and then added filled and cured again.

Once the two components are mixed, working time at 25ºC is one hour aprox.