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Shieldwerx
SWX-207HD5|
Introduction |
● Self-Extinguishing
Borated Polyethylene Neutron Radiation Shielding
● Shielding Applications Where Flame Resistance is Necessary
● Contains 5.5% Boron and 5.7% Hydrogen
● Available in Slabs, Bricks, Rods, Pellets and Custom Shapes
● SWX-217HD Contains 0.9% Boron and 6% Hydrogen
Shieldwerx SWX-207HD5 Self-Extinguishing Borated Polyethylene is used for neutron radiation shielding applications where flame resistance is necessary or desired for the installation. Its hydrogen content is slightly higher than that of SWX-201 Borated Polyethylene. Self-extinguishing materials are desirable for use in any location requiring neutron radiation shielding where there is an issue with fire loading and a need to reduce the amount of material contributing to the overall amount of combustible materials. ASTM test D-635 (Flammability of Self-Supporting Plastics) shows SWX-207HD5 to be self-extinguishing. ASTM Test D-2863 gives a Limiting Oxygen Index of 30.2. In addition to the fire resistance, SWX-207HD5 produces negligible smoke when exposed to flame.
SWX-207HD5 contains high hydrogen content to provide good characteristics for the
attenuation of fast neutrons and contains 5.5% by weight boron. It has relative
high density of 1.7 g/cc (106 lbs/ft3), which improves its gamma radiation shielding
characteristics compared to other polyethylene based shields. SWX-207HD5 has
numerous applications in nuclear facilities including shielding hatches, ducts,
sumps, stairwells, etc. SWX-207HD5 is available in a wide variety shapes
including slabs, bricks, rods, and pellets. Standard 1-inch
thick material is available in slabs up to 48 x 96 in. It is easily shaped and
cut using ordinary woodworking
and metalworking tools. Shieldwerx can custom machine SWX-207HD5 to your
specifications.
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Specifications |
Composition Data:
Hydrogen Atom Density/cm3: 6.15 x 1022
Hydrogen Weight % Density: 6.0%
Natural Isotope Distribution: 99.98% 1H
Boron Atom Density/cm3: 8.14 x 1020
Natural Isotope Distribution: 19.6% 10B and 80.4% 11B
Weight Percent of All Isotopes of Boron: 0.86%
Total Density: 1.7 g/cm3 (106 lb/ft3)
Radiation Properties:
Macroscopic Thermal Neutron Cross Section: 0.41 (cm-1)
Gamma Resistance: 5 x 108 rad
Neutron Resistance: 2.5 x 1017 n/cm2
Physical Properties:
State: bricks, slabs, cylinders
Color: grey/green
Odor: no odor
Machinability: excellent
Thermal Properties:
Recommended Temperature Limit: 200 °F (93.3 °C)
Chemical Properties:
Chemical Name & Synonyms: Borated Polyethylene
Trade Name & Synonyms: SWX-207HD
Chemical Family: Polyolefin's
Formula: Mixture (CH2)n, B
Solubility in Water: negligible
AVAILABLE SIZES: borated sheets
SWX-207HD5-U: 24 x 24 x 1 in. (610 x 610 x 25 mm) (W x L x Thickness)
SWX-207HD5-R: 48 x 48 x 1 in. (1219 x 1219 x 25 mm) (W x L x Thickness)
SWX-207HD5-G: 48 x 96 x 1 in. (1219 x 2438 x 25 mm) (W x L x Thickness)
Custom sizes and thicknesses are available
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Options & Accessories |
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0.9% Boron/6% Hydrogen |
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Technical Information |
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Shieldwerx Resources |