Highly flexible cured silicone offers low thermal resistance 08 December 2017

Master Bond MasterSil 151TC was developed to improve thermal management for electronic assemblies in bonding and gap filling applications. This 100% solid silicone compound features a thermal conductivity of 10-12 BTU•in/ft²•hr•°F [1.44-1.73 W/(m•K)] and superior electrical insulation properties. Volume resistivity is >1014 ohm-cm.

“This two component, room temperature curing formulation contains a special blend of ultra fine thermal conductive fillers and can be applied in very thin sections”, said Venkat Nandivada, manager of technical support. “This significantly enhances its heat transfer capabilities. Thermal resistance for MasterSil 151TC is an impressive 7-10 x 10-6 K•m2/W.”

Additionally, this product was designed to guard against hostile environmental conditions and shrinkage upon cure is low. It has excellent resistance to water and can withstand exposure to rigorous vibration, impact, shock, thermal cycling, salt spray, and airborne contaminants. MasterSil 151TC has good flow properties, an elongation of 90-110% and a Shore A hardness of 80-90. It adheres well to most substrates without the use of primers. Serviceability is from -65°F to +400°F.

MasterSil 151TC has a working life of 2-4 hours for a 100g batch at 75°F, but most importantly this composition has a low exotherm upon cure. The color of Part A is white, while Part B is clear. This durable product can be dispensed on complex shapes and delivers cost effective, reliable long-term performance. It may be used in LED lighting, automotive, semiconductor packaging, communication, consumer electronic and energy industries. MasterSil 151TC is available for purchase in ounce, ½ pint, pint and quart kits.

Will Lowry Editor t: +44 (0) 1727 814 509

Will joined Fastener + Fixing Magazine in 2007 and over the last 10 years has experienced every facet of the fastener sector – interviewing key figures within the industry and visiting leading companies and exhibitions around the globe. Will manages the content strategy across all platforms and is the guardian for the high editorial standards that the brand is renowned.