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Shin-Etsu Develops Minimally Hard Thermally Conductive Silicone Rubber Sheet

Published on 2011-07-05. Author : SpecialChem

Shin-Etsu Chemical Co., Ltd. (President: Chihiro Kanagawa; Head Office: Tokyo), has developed and begun to market a new super-low hardness thermally conductive silicone rubber sheet, a product called the "TC-SP-1.7 Series". This product features a super-low degree of hardness, which is about 1/10 lower (Asker C: Hardness 2) than that of Shin-Etsu's existing low-hardness product, and at the same time, the new product achieves a high thermal conductivity of 1.7 W/m•K. Consequently, when compared to existing low-hardness products, it has the properties of better pliability and adhesiveness, and for this reason it exhibits a superior heat-dissipation effect, even on uneven or non-flat heat-generating surfaces. This new product bonds tightly to the heat-generating electronic devices and the heatsink, thus providing more efficient cooling. Furthermore, because it can also be used on uneven or non-flat surfaces, it can enhance flexibility in product design.

Eight kinds of the standard sheets are available with eight different thicknesses: 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 4.0 and 5.0mm. In addition, the dimensions of each sheet are 300mm*400mm, and it can respond to smaller size for half-cut processing.

Silicone-based thermal interface materials for heat-dissipation applications, when compared with other materials such as acrylic resin types, are superior in thermal resistance and long-term reliability and possess a high level of flame-retardance (UL-94: V-0). Thus, silicone-based thermal interface materials are contributing to the improvement in performance and reliability of electronic devices.

These heat-dissipating thermal interface materials are thermally conductive compounds consisting of a combination of silicone rubber and a high ratio of thermally conductive fillers. By fitting these sheets tightly between the heat-generating unit, such as a computer's CPU, and the heatsink, it is possible to effectively conduct the heat to the heatsink. Demand for thermally conductive silicone rubber sheet is expanding for such heat-dissipation applications as in the growing number of electronic components in automobiles as well as in PCs, home appliances, and electronic game units. Moreover, due to the increasing miniaturization and higher performance of electronic devices, the need for the more effective heat-dissipation materials is further increasing.

In addition to its various kinds of thermally conductive silicone rubber sheets, Shin-Etsu Chemical has a line-up of various other thermally conductive silicone materials such as grease-type, gel-type and liquid rubber-type products that possess excellent adhesiveness. Depending on the application, it is possible to meet various heat-dissipation requirements, and Shin-Etsu will go forward with product development to meet the future needs of a market that will have even more sophisticated needs.

Silicones are highly functional materials that combine characteristics of both organic and inorganic materials. They are materials that provide high value-added features for products in a wide range of industrial fields, including electrical and electronic applications, automobiles, construction, cosmetics and chemicals.

About Shin-Etsu Chemical

In 1953, Shin-Etsu Chemical became the first firm in Japan to venture into the silicones business. In the decades since, Shin-Etsu has created a diverse line of products designed to exploit the unique and useful properties of silicones. Today, our offerings include over 4,000 products that meet user needs in a wide range of industries, including electric/electronics manufacturing, the construction industry, the auto industry, cosmetics and toiletries, and the chemical industry. The Company's operations have spread beyond Japan's shores; the company now has production facilities and marketing bases in countries around the globe, including the USA, South Korea, China, Taiwan, Singapore, Thailand and the Netherlands. The company has organized its supply framework to enable direct access to the world's markets and enhance responsiveness to customer needs. As a result, Shin-Etsu has grown to become the No.1 silicone manufacturer in Japan and one of the leading firms in this industry worldwide.

Source: Shin-Etsu Chemical

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