Master Bond has developed an epoxy system with a reported unlimited working life at room temperature.
Supreme 17HT is a single component, no mix system for bonding and sealing applications, the company says.
The formulation is thermally stable and has a high glass transition temperature of 410°F (210°C) and retains its bond strength at elevated temperatures, according to Rohit Ramnath, senior product engineer. It is suitable for applications involving repeated exposure to thermal cycling and meets NASA low outgassing specifications asper ASTM E595 testing. ‘As a toughened system, it is ideal for bonding dissimilar substrates,’ he added.
Supreme 17HT has a lap shear strength of 1,900-2,100 psi and tensile strength of 7,000-8,000 psi. It’s volume resistivity is over 1015 ohm-cm at ambient temperatures and over 1012 ohm-cm at 400°F. It is serviceable from -100°F to +550°F (-73°C to 288°C) and offers a moderate viscosity of 100,000-150,000 cps, Master Bond says. The epoxy system works at elevated temperatures with cure schedule options including 300°F for 5-6 hours or 350°F for 4-5 hours. It is available in standard packaging ranging from ½ pint to 5 gallon containers as well as packaging including cartridges and syringes.
This story uses material from Master Bond, with editorial changes made by Materials Today. The views expressed in this article do not necessarily represent those of Elsevier.