Master Bond EP29LPAOHT is a two-component, NASA low-outgassing-approved epoxy  system featuring a working life of 8-10 hrs per 1,000-g batch. Due to its low exotherm and flowable consistency, this product is reportedly suitable for specialty potting applications where large masses of the epoxy need to be cured. It can be mixed and poured in volumes of more than a gallon at a time. Even in deep cross-section thicknesses, the product does not generate much heat. Since the epoxy does not start gelling quickly, Master Bond reports that it is especially advantageous for use in many production environments that require a long open time after mixing.
 
EP29LPAOHT has a 50:100 mix ratio by weight and a mixed viscosity of 10,000-30,000 cps. It possesses a thermal conductivity value of 0.87-1.15 W/(m•K) and is electrically insulative with a volume resistivity of more than 1015 ohm-cm. Upon curing, EP29LPAOHT exhibits low shrinkage, dimensional stability, and a low coefficient of thermal expansion. Other noteworthy properties reportedly include a compressive strength of 24,000-26,000 psi, a Shore D hardness of 80-90, and a tensile modulus of 450,000-500,000 psi. This epoxy is serviceable over a temperature range of -60 to +350°F.

EP29LPAOHT reportedly bonds well to a variety of substrates, including metals, glass, ceramics, and many different plastics. It resists many chemicals, including (but not limited to) water, fuels, and oils. It is available for use in ½ pint, pint, quart, and gallon container kits. EP29LPAOHT does not contain solvents and is RoHS compliant.

Additional details are available at www.masterbond.com.