Attenuating mass for an ultrasonic sensor, use of epoxy resin

摘要

Temperature stability at the temperatures prevailing in a motor and stability that is required over an entire temperature range are provided by an attenuating mass. This enables continuous use at temperatures of approximately 150° C. while providing ultrasonic attenuation at low temperatures.

主权项

1. An attenuating mass adapted to be soft and stable in a temperature interval of −30° C. to 150° C., comprising:
an epoxy resin matrix; and a filler with a multimodal grain size distribution, wherein the filler is dispersed throughout the resin matrix to cause a density gradient of particles.