Views: 13591 Author: Site Editor Publish Time: 2006-03-12 Origin: Site
40% lead boron board , 30% lead boron polyethylene board , 20% lead boron polyethylene board
With the rapid development and application of my country's nuclear energy technology and ray technology in nuclear power, radiation diagnosis and treatment, industry, high-energy physics research and other fields, neutron radiation hazard has become an important radiation damage hazard factor. As far as the principle of shielding fast neutrons is concerned, because high-density polyethylene has a good moderating effect on fast neutrons, and boron element (10^B) has a high thermal neutron absorption cross-section, therefore, a certain "B" is used. The lead-boron polyethylene board becomes a good shielding material for shielding fast neutrons. In order to improve the neutron shielding effect and reduce the cost of lead-boron polyethylene shielding materials, this research is based on the polyethylene diffused fast towel and boron thermal towel. The lead-boron polyethylene board was developed due to the large absorption cross-section.
Lead-boron polyethylene sheet has high-performance products such as anti-neutron radiation and anti-nuclear radiation. It is made by adding boron powder and lead powder to ultra-high molecular weight polyethylene, and processing technology such as stirring, plasticizing, and kneading. Because we are a manufacturer, we can meet your different requirements for the proportion of lead and boron, and 2%-50% lead-boron polyethylene can be customized.
Boron in the lead-boron polyethylene sheet has the function of absorbing neutrons. Boron (B) is a trace alloying element. Boron is combined with plastic or aluminum alloy and is an effective neutron shielding material. Boron steel is used as a control rod in the reactor;
Boron fibers are used to manufacture composite materials, etc.; boron-containing additives can improve the quality of sintered ore in the metallurgical industry, reduce melting point, reduce expansion, and improve strength and hardness. Boron and its compounds are also used in the metallurgical industry
Co-solvent and raw material for smelting boron iron boron steel, we combine ultra-high molecular weight polyethylene UHMWPE and boron B wanmei.
Boron carbide, borax, boron trioxide and lead powder can be added according to customer requirements, and the content of 5%-50% can be customized for production, and CNC products can be added according to your drawings or requirements!
Lead boron polyethylene board : 10% (by weight)
Density: ≥1.028g/cm3
Density difference: ≤0.01g/cm3
Thermal deformation temperature (load ρ=0.46Mρa): 72℃
Linear expansion coefficient: 8.933×10-51/℃
Heat resistance temperature: 126℃ (DTA measurement value)
Thermal strength: ≈ 24MPa
Impact strength (notch): ≈ 19KJ/m2
