In boron-containing polyethylene, boron is mainly used for absorption. The reaction cross section of boron to low-energy neutrons is relatively large, and the low-energy neutrons have been completely absorbed by boron before the reaction of hydrogen occurs. When the mass ratio of boron-containing polyethylene is 10% and the thickness is 15cm, boron-containing polyethylene has a relatively large The neutron shielding effect has met the requirements. On this basis, if the boron content or thickness is increased, the integral leakage of neutrons will basically not change. The product technical indicators are:
Containing boron carbide: 10% (by weight)
Density: ≥1.028g/cm3
Density difference: ≤0.01g/cm3
Heat distortion temperature (load ρ=0.46Mρa): 72°C
Linear expansion coefficient: 8.933×10-51/℃
Heat-resistant temperature: 126°C (DTA measured value)
Heat resistance: ≈24MPa
Impact strength (notch): ≈19KJ/m2?
Production moulds: large quantity, the maximum thickness of plate molds is 260mm, and the thickness above 260mm can be spliced
3000X1500X(10-260)MM 3050X1220X(10-260)MM
4700X1200X(10-260)MM 5000X1300X(10-260)MM
4500X2000X(10-260)MM
6000X1800X(10-260)MM 3000X3000X(10-260)MM
