G109 10gram Thermal Conductive Glue, Heatsink Silicone Glue, Thermal Plaster, Silicone Viscous Adhesive Compound for LED GPU MOSFET Printer Chipset IC High Performance

I purchased this adhesive in June 2018 and first used it over the past couple of days to assemble homemade heat sinks and apply them to NVME SSDs. Before bonding parts I applied the adhesive to lapped 1/2" square pieces of 1/16" thick aluminum 1100 and applied moderate pressure. A joint gap of .001" was measured with calipers. At a thermal conductivity of 1.2 W/m-K, this bond thickness has neglible thermal resistance for my application. Bonding of parts was done at a humidity of ~30% and a temperature of ~70°F. The adhesive did not "skin over" or otherwise exhibit an increase in viscosity during the fifteen minutes or so that I was working with it. I prefer a slower curing adhesive so that I do not have to race to get parts assembled before increased viscosity causes problems. This applies in particular to parts being bonded to circuit board components since large clamping forces have the risk of damaging the circuit board. Silicone (polysiloxane) adhesives require moisture to cure and this moisture can be provided from the atmosphere or adsorbed moisture on surfaces that are being bonded. Thin joints will cure faster than thicker joints. If you are not going to be able to leave the bonded parts alone for at least 24 hours, it is a good idea to bond pieces of scrap metal and/or plastic and test the bond strength of the test pieces prior to putting your bonded assembly into service. Cleaning surfaces to be bonded with a cotton swab and isopropanol and/or acetone (not suitable for some plastics) is also recommended since the solid filler used to enhance thermal conductivity inhibits the flow and wetting capability of the silicone adhesive. TANSTAAFL. Two pieces of copper were cleaned, bonded, and tested after a 24 hour cure (see photo). The lap joint (~.3 sq.in.) held up under the application of a 10 pound shear force, but failed at 20 pounds. The adhesive in the interior region of the failed joint was still plastic, indicating that the joint wasn't fully cured; however the bond was strong enough for my application.

Product arrived on time exactly as expected. It came with plastic spreader. Used it to attach an led assembly to the metal substrat. Worked nicely

Originally I saw that this was only 10 grams and debated buying multiple. 1 tiny tube was way more than enough! I ended up with a lot of extra and was running around my house adding heat sinks to anything that gets even remotely warm just to use up the tube and avoid wasting the rest of it. After adding heat sinks to my 3D printer’s stepper motors, two raspberry pi 3Bs, one Raspberry pi 4, a couple Arduinos, and other miscellaneous electronics, im still left with about 75% of the paste still in the tube! The paste works great. I wouldn’t use this on anything that you intend to eventually take apart like a PC or anything, but for adding heat sinks and creating permanent bonds, it’s amazing! If I was describing this product to someone that had no idea what it was, I’d describe it as a “thick super glue made to move heat on electronics”. The dry time was a lot faster than expected. If used correctly where you press out all the excess and wipe it off, it took maybe 2 hours to fully stick, after sitting overnight I doubt anything will be able to pull those heat sinks off.

Back in '16, I built a custom LED lighting system for growing Cannabis. I used, Cree® CXB 3590 LED chips, very high heat devices, mounted to huge round finned aluminum heat sinks. These are flat chips, about 1 1/4" square. I used this glue to fasten them to the hear sinks, using a very thin layer to maximize heart transfer. They've all stayed attached over the years, until recently. But, the one that failed, failed due to the LED chip, itself, burning out with a pop, that dislodged it. Otherwise, this has worked perfectly for my lights, and I'll be using it again tomorrow to install the replacement for the burnt out LED chip. Only gave it 4 stars, due to the issue that some any have cited, of it drying out within days after opening it, no matter how tight the cap is. But, it's a very small quality that goes a long ways, and it's cheap, so I can live with that loss. You may feel differently!

Used this to secure 3w UV LEDs to mounting chips and heat sinks. Worked like a charm even in an outdoor environment. Only a single drop was more than sufficient to secure each LED to the chip and each chip to the heat sink (although solder and glue also connected the devices). The glue also seems to help to promote thermal transfer.

Used this thermal glue to glue down my Traxxas Stampede 4x4 ESC heat sink. And after many many hard crashes it's still in place. Very strong glue for RC electronics. Will buy more when needed

As Advertised! Works great, at least no issues so far. This is a good product for LED headlight chips, which is what it was used for here.

Works

Works as advertized. (I used it to glue and seal a heat exchanger). Takes a few hours to set and forms a strong bond. Would help to have detailed spec sheet giving thermal conductivity.

Had to use this with an crypto miner that needed new heatsinks and never experienced a problem since then

Worked great 👍 👌

good quality glue for heat sink of processor etc

This glue ruined my chipset