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12 Mar 2008  -  United States

IDI receives highest UL temperature rating for BMC thermoset polyester

© IDI Composites

IDI Composites International has received a UL temperature rating* of 170 °C, the highest UL temperature rating in the thermoset polyester composites industry, for its 46-16-26-S grade bulk molding compound (BMC). This rating assures OEMs that the IDI material meets the properties required in high heat environments, such as those common in the power generation and automotive markets, and reduces lengthy component temperature testing.

The BMC material received a Relative Temperature Index (RTI) rating of 170 °C for both electrical and mechanical properties (Electrical RTI rating of 170 °C; Mechanical Impact rating of 170 °C; Mechanical Strength rating of 170 °C). RTI is determined through a thermal-aging testing process, which measures the retention of certain critical material properties, such as dielectric strength, tensile strength, and impact resistance. Prior high temperature ratings in the thermoset polyester composites industry were maximized at 160 °C.

IDI 46-16-26-S BMC withstands extreme high heat while maintaining its strength and excellent insulative properties. Common applications include transformers, power distribution switchgear and circuit breakers, and motor and generator insulation components, such as supports and outer casings. 

About IDI Composites International
IDI Composites International is one of the premier global formulators and manufacturers of thermoset molding compounds for custom molders and OEMs. The company provides customized polyester/vinylester-based bulk molding compounds (BMC) and sheet molding compounds (SMC) for the world’s most demanding markets, including automotive, electrical, appliance, food service, and energy.
Headquartered in a 200,000 square foot facility in Noblesville, IN (USA), IDI has a strong presence in the international thermoset composites market. To support a growing customer base world-wide, the company operates multiple wholly-owned manufacturing facilities in Europe, Asia, and The Americas. 

*Underwriters Laboratories Temperature Index
"The UL temperature is the maximum temperature that causes a 50% decay of the studied characteristics in the very long term. The UL temperature index depends on the grade, the thickness of the tested samples and the characterictics studied."
(Source: Thermosets and Composites - Technical information for plastics users by Michel Biron, Elsevier)

Source : IDI Composites