BMC (DMC, Duroplast) has long been used in automotive applications because of the excellent mechanical properties, creep and thermal resistance. Components such as headlamp reflectors, engine/valve covers, front timing chain covers, and small electric motors have benefited from this technology for many years. Recent advances in the formulations have opened up new applications in automotive under the hood applications. The new material technology is quickly finding its way into applications that require extremely tight molded dimensions and dimensional stability over a temperature range from -40°C to 150°C. Some of these applications include Electronic Throttle Controls (ETC), Air Control Valves (ACV), and transmission components. This paper is a case study of the successful conversion of aluminum ETC's to BMC composite materials.
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