Lead boron polyethylene sheet is gamma; /A composite board with dual shielding of X-rays and neutrons, made of ultra-high molecular weight polyethylene (UHMWPE) as the matrix, uniformly mixed with lead powder and boron carbide, balancing protection, lightweight, and easy processing.
1、 Core Composition and Shielding Principle
Matrix: Ultra high molecular weight polyethylene (UHMWPE) with high hydrogen content, slows down fast neutrons, facilitates boron absorption, provides toughness, corrosion resistance, self-lubricating and lightweight basis
Lead (Pb): Content 10%– 40% high atomic number, shieldingγ Radiation, X-ray
Boron (B ? C): Content 5%– 15% boron-10 isotope strongly absorbs thermal neutrons and suppresses secondary radiation
Collaborative mechanism: Polyethylene slowing down fast neutron→ Boron absorbs thermal neutrons→ Lead shieldingγ Radiation, achieving full spectrum radiation protection
2、 Core features (can be directly used in product catalogs)
Double radiation shielding
Simultaneously blockγ /X-rays and neutrons, neutron absorption rate>80% lead equivalent 0.5– 5mmPb can be customized to adapt to different radiation intensities
Lightweight advantage
The density is only one-third of pure lead, reducing weight by 30%; 60% reduction in structural load-bearing capacity for easy installation and movement
Good mechanical and processing properties
Tensile strength: 15MPa, impact resistant, not easily shattered, and can be cut CNC、 Hot forming, welding, suitable for complex structures
Resistant to environmental stability
Acid and alkali resistant, moisture-proof, non absorbent, anti-aging, working temperature: -40 ℃~80 ℃ (conventional)
Safety and Environmental Protection
No obvious activation products, low secondary radiation, compared to pure lead, reducing the risk of lead dust and structural toxicity
Self-lubricating non stick material
Low surface friction coefficient, smooth material flow, and no blockage in the warehouse
3、 Typical application scenarios
nuclear industry
Reactor shielding layer, nuclear waste container liner, spent fuel transfer shielding, nuclear power plant building, fuel building, thermal protection wall/door
Medical Radiology
CT、PET-CT、 Linear accelerator room screen door/wall, nuclear medicine discipline, interventional operating room, radioactive drug dispensing table, mobile lead boron screen, radioactive source storage box
Research and Industry
Protection of nuclear physics laboratory, accelerator, neutron source shielding, industrial flaw detection, petroleum logging, and radioactive detection equipment
specialized field
Military nuclear equipment, nuclear submarines, strategic missile shielding components