CATALOGUE No. JC259

Description:

Poly / cast from John Caunt Scientific is a dry mix material designed to be cast into closed containers. It is field castable, providing excellent, low cost neutron shielding, with a hydrogen content 6% greater than that of water. JC259 has 0.9% boron present to suppress radiation from capture gamma rays.

Poly / cast is mixed with water, it forms a strong solid material 30 minutes after casting and can be poured in layers as each layer bonds to the previous one. No special tools or skilled labor are needed. Sealing the container immediately after casting maximizes the water and hence the hydrogen) content.

This material may be poured in as many layers as required as each layer bonds readily to the previous one. Poly / cast has been used to cast a variety of shielding wall barriers, and even an entire four foot thick roof for a cyclotron facility, Detailed mixing instructions are included with each order.

The recommended temperature limit for Poly / cast is 150°F (66°C). When held at this temperature for extended periods, it loses only about 7% of its hydrogen content. Even at 300°F (149°), it retains 80% of its hydrogen. Poly / cast is available in multiples of 165 pounds and has shelf life of six months, under dry storage conditions. Other formulas are available to increase Boron content.

Chemical & Physical Properties:

Hydrogen atoms/cc: 7.10 x 10 22
Boron atoms/cc: 0.58 x 10 21
Temperature Limit: 66*C
Density: 1.15g/cc

25.5kg (56 lbs) of dry-mix powder will cast one cubic foot.

Features:

• Field castable without special tools.
• Only requires water for mixing.

• Walls.
• Roof slabs for cyclotron facility.