Mitsubishi Monitor

2022.08.04

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Developing a "Thermal Conductive Putty" Softer than Thermal Conductive Rubber

Mitsubishi Materials (MMC) has begun development of a "thermal conductive putty" as a thermal conductive material to be sandwiched between high-temperature components, such as lithium-ion battery modules and electronic circuit boards, and low-temperature heat-dissipating components, such as heat sinks, to facilitate heat transfer from the former to the latter. Currently, the problem is that high-temperature components cannot be cooled sufficiently due to the interfacial thermal resistance that occurs at the contact surface between the high-temperature and low-temperature components. To overcome this problem, the company has created a technology that combines a filler having high thermal conductivity with a particular rubber to create a soft clay-like thermal conductive material. By applying this technology, the company will advance the development of a "thermal conductive putty" that molds to the shape of components it is in contact with to achieve closer adhesion.

Conceptual diagram showing how "thermal conductive putty" can be used to dissipate CPU heat

Conceptual diagram showing how "thermal conductive putty" can be used to dissipate CPU heat