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Monday, 16 September 2019
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Raw materials & technologies, Technologies

Adhesives withstand high temperatures in mechanical engineering

Thursday, 21 August 2014

New structural adhesives are mainly used when components to be bonded are exposed to temperatures up to +220 °C.

The properties of the new adhesive open up versatile application possibilities in mechanical engineering like motors

Source: Heiko Stahl

The properties of the new adhesive open up versatile application possibilities in mechanical engineering like motors

Source: Heiko Stahl

Adhesives resistant to elevated temperatures are particularly in demand in mechanical engineering and the automotive industry, for example for electric motors. They must prove high strength, and permanent resistance to environmental influences, such as gear oil.

Bonding magnets in electric motors

Delo’s high-temperature adhesives exhibit a shear strength of 12MPa at such temperatures. Thanks to an increased glass transition temperature and an improved long-term temperature stability, up to 3N/mm² are possible even when the bonded connection is subjected to +220°C. The enhancement of one-component epoxy resins expands their temperature range of use. The properties open up versatile application possibilities in mechanical engineering. For example, "Delomonopox HT282” with aluminum filler is used for bonding magnets in electric motors as it can withstand dynamic stress thanks to its impact resistance. In contrast, "Delomonopox HT281” with mineral filler is electrically insulating. This product bonds and casts components in electric motors, and can also be used in applications where good chemical resistance is required, for example slide ring seals. Tried and tested processing properties enable simple dispensing. In addition, the adhesives can be processed within a period of up to four weeks at room temperature.

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