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In computing and electronics, thermal pads (also called thermally conductive pad or thermal interface pad) are pre-formed rectangles of solid material (often paraffin wax or silicone based) commonly found on the underside of heatsinks to aid the conduction of heat away from the component being cooled (such as a CPU or another chip) and into the heatsink (usually made from aluminium or copper).
Thermal pads can be seen in several locations on this printed circuit board (PCB), in particular, the bottom pad of the three vertical pads in the top left corner. A thermal relief pad, thermal pad or simply thermal, is a printed circuit board (PCB) pad connected to a copper pour using a thermal connection. It looks like a normal pad with ...
A heating pad is a pad used for warming of parts of the body in order to manage pain. Localized application of heat causes the blood vessels in that area to dilate, enhancing perfusion to the targeted tissue. Types of heating pads include electrical, chemical and hot water bottles. Specialized heating pads (mats) are also used in other settings.
Related products are heated seat covers, throws, and seating pads. Heated seat covers for snowmobiles, motorcycles, and cars and heated throw blankets typically use electrical 12-volt heating elements. Heated seating pads for hunting, canoeing, and stadium use either have rechargeable batteries or use reheatable gel packs.
The reaction can last 3 to 6 hours depending on whether both or only one ends of the charcoal is lit. Unlike iron-oxide based hand-warmers, charcoal handwarmers can last longer while staying hotter due to a more linear reaction rate but due to the charcoal fuel being shelf-stable they require an ignition source and produce a smokey odor when used.
Sodium polyacrylate (ACR, ASAP, or PAAS), [1]: 233 also known as waterlock, is a sodium salt of polyacrylic acid with the chemical formula [−CH 2 −CH(CO 2 Na)−] n and has broad applications in consumer products.