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DELO Unveils Anhydride-based Epoxy for Bonding

Published on 2015-08-20. Author : SpecialChem

DELO Industrial Adhesives presents new one-component epoxy resins based on anhydrides with an operating temperature range of -65 °C to +250 °C. They are particularly suitable for bonding or encapsulating sensors and semiconductors.

New high temperature adhesives
Fig. 1: New high temperature adhesives

DELO's anhydride-based adhesives have proved their worth in high-reliability applications thanks to their superb chemical resistance. They have impressed users with their universal adhesive strength, high level of stability, and excellent processing characteristics. Their high temperature- and chemical-resistance and low thermal expansion coefficient of 11 ppm/K or less can be attributed to their extremely dense crosslinking. This gives them a clear advantage over aminic adhesives.

In addition to these benefits, the newly developed adhesives also have the impressive characteristic of remaining strong and stable in temperatures up to +250 °C. That is 70 °C more than previous standard products based on anhydrides. Even after 500 hours of storage at +250 °C they exhibit a tensile strength of 50 MPa. As well as a high temperature-resistance, the adhesives also have a high bond strength at temperatures above +200 °C. After storage for 500 hours at +250 °C, a compression shear strength of 8 MPa was achieved at a test temperature of +220 °C.

With such impressive performance, these adhesives are suitable for applications in which bonded or encapsulated components must withstand high temperatures and aggressive media, as is increasingly called for in areas such as the automotive, power electronics, or oil and gas industries.

About DELO

DELO is a leading manufacturer of industrial adhesives with its headquarters in Windach near Munich, Germany, and subsidiaries in the USA, China and Singapore. In the fiscal year 2015, 450 employees generated sales revenues of EUR 74 million. The company supplies customized special adhesives and associated technology for high-tech industries such as automotive, aviation, optoelectronics, and electronics. DELO’s customers include Bosch, Daimler, Infineon, Osram, Siemens and Sony. DELO won the German Industry’s Innovation Award 2014.

Source: DELO

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