Review on AIYUNNI 200X200X1 5Mm Efficient Conductivity Temperature by Patrick Jarvis

Not tested as a thermal pad yet but I can speak to the product and provide pictures. It's dense and spongy, sticky but not too sticky. Some might prefer it a little stickier depending on usage, but I think that's how it should be. I bought it to be cut to custom sizes to use as thermal pads for devices like RAM dims, Raspberry Pi and other bare chips. After looking at the texture and other materials, I don't know how well the adhesive will hold the heatsink when using these pads as an alternative to thermal paste for tiny chips, but I'm willing to try. It's probably sticky enough to do what you want, but maybe not.