5% Borated Polyethylene - Brochure

A polyethylene composite of 5% boron is widely used in neutron shielding applications because of its excellent nuclear and physical characteristics. Type 201 is lightweight and easily moved for temporary shielding.  It is especially useful in shielding against low and intermediate neutron flux levels where excessive temperatures will not be encountered - recommended limit is 180° F (82° C). Because of its high boron content, type 201 shows excellent attenuation of thermal neutrons and significant reduction of capture-gamma dose.  Fast neutrons are shielded by the very high concentration of hydrogen (96% that of water).