Faste ni ng & Joining Adhesive manufacturers continue to improve their offerings. Here’s a look at some key silicone and solder pastes available on the market today.
Addition cured silicone from Master Bond is optically clear for low temperature serviceability For potting and encapsulation applications, MasterSil 157 is a two-component silicone system that features low viscosity and low exotherm. It has superior electrical insulation properties and can cure in sections beyond 1 in. thick. MasterSil 157 is serviceable over a –175° to 500°F (–115° to 260°C) temperature range. “This product was formulated for applications that require a silicone to operate under low temperatures,” said Venkat Nandivada, manager of technical support. “Typically, silicones are better suited to withstand high temperatures, so MasterSil 157 fills that need.” Similar to traditional silicones, MasterSil 157 is flexible with an elongation of 110-140%, to withstand rigorous thermal cycling and shock. Featuring a refractive index of 1.43, it has excellent optical clarity and can transmit light from 220-2,500 nanometers. “Its optical clarity makes it
| courtesy of Master Bond
May 2017
DESIGN WORLD
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