SilSo Cool 15959 is a silicone 1K thermal adhesive from CHT, rated 2.7 W/m·K. Typical uses: Automotive, thermal transfer, PCB bonding. Short answer: we dispense it with a PCP progressive cavity pump.
Material at a glance
| Manufacturer | CHT |
|---|---|
| Type | 1K thermal adhesive |
| Chemistry | Silicone |
| Thermal conductivity | 2.7 W/m·K |
| Viscosity | Thixotropic paste (extrusion 65 g/min; no viscosity given) |
| Cure | Moisture cure RTV: tack time <2 min; 3 mm in <24 h; full cure 7 days |
| Packages | Cartridges (e.g. 310 ml); bulk containers |
From the manufacturer's published data (source). Always work from the current technical data sheet.
How we dispense it
For a single-component thermally conductive adhesive we start with a PCP progressive cavity pump, fed from a cartridge for lab and low volume, or from a pail with a follower-plate pail pump for production. A progressive cavity pump meters by volume, so dot and bead size stay consistent. Pump size depends on your dot or bead size and cycle time.
- Abrasion: the ceramic filler that carries the heat wears pumps out. We use tungsten carbide rotors and wear-resistant stators and run the pump slowly, at 8 to 12 rpm, for long wear life.
- Moisture cure: keep the feed sealed from air, or the material skins in the lines.
See our PCP progressive cavity pumps, or use the pump configurator.
Frequently asked questions
What pump should I use to dispense SilSo Cool 15959?
For a single-component thermally conductive adhesive we start with a PCP progressive cavity pump, fed from a cartridge for lab and low volume, or from a pail with a follower-plate pail pump for production. Pump size depends on your shot or bead size and cycle time; send us those and we will size it.
Can SilSo Cool 15959 be fed from pails instead of cartridges?
CHT lists these packages: Cartridges (e.g. 310 ml); bulk containers. Cartridges suit lab and low volume. Above that, a follower-plate pail pump feeds the metering pump directly, which cuts container changes and waste.
Does SilSo Cool 15959 need mixing?
No. It is a single-component material, so there is no mixer and no ratio to hold. The job is accurate, repeatable volumetric metering, which is what a progressive cavity pump does.
Will SilSo Cool 15959 wear out the pump?
Thermally conductive fillers are abrasive. With tungsten carbide rotors, wear-resistant stators and pump speeds of 8 to 12 rpm, stators typically last 6 to 12 months and rotors up to 24 months, and a pump rebuild takes under an hour.
Talk it through with us
Running SilSo Cool 15959, or about to? Send us the technical data sheet, your bead or shot size and your cycle time, and we'll recommend a pump and feed system. We can run an application test on your material before you buy. Contact us
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SilSo Cool 15959 is a trademark of CHT or its affiliates. Dispense Robotics is not affiliated with the manufacturer; the name is used to describe the material our equipment dispenses.