Adhesives & Coatings

Keratherm^®

Keratherm^® thermal adhesives and coatings deliver reliable bonding for thermal management needs. The two-component Keratherm^® Thermal Adhesive is a high-strength, room-temperature-curing epoxy ideal for permanently attaching CPUs, GPUs, BGAs, heat sinks, and other components. For integrated solutions, Keratherm^® Adhesive Coatings are factory-applied to select thermal interface films and pads, providing low- to medium-strength adhesion with excellent heat transfer, eliminating separate adhesives in many assemblies. These coatings are shelf-stable and available as factory orders—contact MH&W International for the right Keratherm^® adhesive option for your application.

Versatile Application Methods

The product range offers a choice between two-part liquid systems and pre-applied films. The Bond series liquid adhesives are ideal for filling complex geometries and irregular gaps through a permanent thermal cure, while the SIL and ACRYL adhesive films provide a “peel-and-stick” solution for rapid assembly and consistent coating thickness.

High Thermal and Heat Resistance

For extreme heat environments, the SIL (Silicone) film series is the best choice, as it can withstand temperatures up to +250°C. While the Bond series and Acrylate films are very robust, they are generally rated for 125°C to 180°C. Always verify the specific continuous operating temperature of your component before selection.

Optimized Storage and Stability

Adhesives should be stored in a cool, dry place away from direct sunlight. For Bond Liquids, you must ensure containers are tightly sealed to prevent moisture contamination. For Adhesive Films, keep them in their original packaging to avoid dust. The silicone films typically have an 8-month shelf life, while the acrylate films last up to 12 months when stored under recommended conditions, usually between 15°C and 25°C.

Product Tables

Product	Thermal Conductivity (W/mK)	Thermal Resistance (K/W)	Dielectric Breakdown (kV/mm)	Tensile Strength (N/mm²)	Hardness (Shore A)	Temp. Range (°C)	Mixing Ratio	Datasheet
Bond 100 RT	1.5	0.83	12.0	15.0	20 - 35	-40 to +180	1:1	PDF

Product	Film Type	Color	Coating Thickness (µm)	Peel Resistance (N)	Bonding Strength (N)	Application Temp. (°C)	Reflow Process	Shelf Life (Months)
SIL-S1	PSA silicone	Transparent	20 - 50	2 - 10	> 0.15	-60 to +250	Yes	8
SIL-S2	Gel silicone	Transparent	30 - 75	1 - 5	> 0.2	-60 to +250	Yes	8
ACRYL-A1	Acrylate	Transparent	15 - 25	5 - 12	> 0.3	-40 to +180	No	12
ACRYL-A2	Acrylate removable	Transparent	20 - 50	2 - 5	> 0.2	-40 to +180	No	12
ACRYL-A3	filled Acrylate	Milky	40 - 60	2 - 5	> 0.2	-40 to +180	Yes	12

Frequently Asked Questions

What is the main difference between the Bond series and the SIL/ACRYL films?

The Bond series (like Bond 100 RT) consists of two-part liquid adhesives that require mixing and a specific cure time to create a permanent thermal bond. They are ideal for filling irregular gaps. The SIL and ACRYL films are pre-applied “dry” adhesive systems. These are better for high-speed assembly and applications where a consistent thickness is critical across the entire surface.

Does Keratherm Bond 100 RT require heat to cure?

No, the Bond 100 RT is designed to cure at Room Temperature (hence the “RT”). While it reaches a functional cure in approximately 20 minutes at $25$°C, you can accelerate the process by applying heat if your production timeline requires a faster turnaround.

Which adhesive should I choose for a high-temperature environment?

For extreme heat, the SIL (Silicone) film series is the best choice, as it can withstand temperatures up to +250°C. While the Bond series and Acrylate films are very robust, they are generally rated for 125°C to 180°C. Always verify the specific continuous operating temperature of your component before selection.

Can the ACRYL-A1 or A2 films be used in a reflow soldering process?

No. The ACRYL-A1 and ACRYL-A2 films are not suitable for the high-heat cycles of reflow soldering. If your assembly process requires reflow, you should use SIL-S1, SIL-S2, or the ACRYL-A3 (filled Acrylate) variant, all of which are designed to maintain integrity during those thermal peaks.

How should I store these products to ensure they reach their full shelf life?

As thermal demands rise with miniaturization, MH&W’s Thermal Division provides the expertise and Keratherm® materials necessary to prevent system failure. Contact our engineers for technical support, request an RFQ, or purchase standard sheets directly from our online shop.