• Contains three times as much hydrogen as ordinary concrete along with 1.56% boron

• Rugged "concrete-like" neutron radiation shielding is easily cast in the field

• Low cost material is completely non-combustible

• Comparable to CNW B

Power reactor and other industrial neutron radiation shielding applications often require a material that exhibits a high temperature resistance. SWX-277 is a refractory material, comparable to CNW B, that retains its shielding properties at temperatures up to 450°F (230 °C) and its physical integrity up to 1900°F (1038 °C). It is entirely noncombustible and is designed to be cast in the field.

SWX-277 is an excellent high flux neutron radiation shield due to the inclusion of temperature resistant additives that provide hydrogen for moderation and boron for thermal neutron absorption. It provides more than twice the hydrogen as ordinary concrete (equal to approximately ½ that of pure water) along with a boron content of 1.56%. SWX-277 is provided as a dry mix for casting in the field. It can be shaped using standard concrete cutting/drilling tools. SWX-277 is typically provided in 300-lb fiber barrels.

Approximately 96-lbs. of dry mix are required to obtain one-cubic ft. of cast material. (1.54 kg of dry mix will give one liter). Detailed mixing instructions are provided with each order. Recommended shelf-life under dry storage conditions is twelve months. SWX-277 is comparable to CNW B.

Coefficient of Thermal Conductivity: 1.24 x 10^-3 cal-cm / sec-cm²-°C (0.3 BTU-ft / hr-ft²-°F)

Heat Capacity: 0.22 cal / g-°C

Cubical Coefficient of Expansion: 8 x 10^-6 cm³ / cm³- °C (1.4 x 10^-5 in³  / in³ -° F )

For more information or to request a quotation, please contact us

by phone at: (865) 947-5123 or by email at: sales@deqtech.com.