I'm seeking opinions from those of you who have used Thermal Adhesive Tape for long term heat sinking, ideally more than 5 years. In the past, I've always used thermal grease compounds and they work fine for a while, seemingly until they get hard and the VOCs that keep them from drying out are gone. When that happens, this thermal grease compound loses its ability to efficiently conduct heat well, resulting in component overheating.
I'm planning some projects that will use high temperature 100Watt resistors mechanically fastened with machine screws and lock nuts to appropriately sized heat sinks. In one application, these would be used for load testing Transformers. Another similar installation would be subjected to 100dBZ SPL, 30-400Hz vibrations, installed in a semi-permanent location.
If possible, I would prefer to not have to replace the thermal conduction medium frequently or at all.
After reading about Silicone based Thermal Adhesive Tape, I thought this may be a good option. Another possibility may be some kind of thermal conduction epoxy.
Here's a link below to what I'm considering:
"Thermal conductivity and high stability, its life than the general heat double-sided stickers long, normal temperature (30~+150 °C ) can work for a minimum of 5 years."
Glass fiber thickness: 0.2mm
Thermal Conductivity: 2W/mk
Breakdown Voltage: 5KVAC
Thermal impedance : 0.3℃in2/w
Initial Adhesion: 1.5kg/inch
I did search for this information regarding the pros and cons of grease/paste vs. tape vs, epoxy here on the forum and elsewhere. Opinions are varied.
If you have experience using Silicone Thermal Adhesive Tape like this and/or thermal conduction epoxy, I would welcome your opinions about their longevity. Any specific product recommendations would also be appreciated. Thank you.