Boron Loaded UHMWPE Sheet is a specialized neutron shielding material manufactured from a hydrogen-rich ultra-high-molecular-weight polyethylene matrix with uniformly dispersed boron-containing compounds.
The polyethylene matrix helps moderate fast neutrons, while the boron-containing component helps absorb thermalized neutrons. The sheet is suitable for neutron shielding walls, radiation shielding doors, equipment enclosures, neutron source storage areas, nuclear research facilities and medical radiation projects.
Available in different nominal boron contents, thicknesses and sheet dimensions, the material can also be cut, drilled, grooved and CNC-machined according to project drawings and installation requirements.
Boron Loaded UHMWPE Sheet is an engineered polyethylene shielding material developed for applications involving neutron radiation. It combines the hydrogen-rich molecular structure of ultra-high-molecular-weight polyethylene with uniformly dispersed boron-containing compounds, providing neutron moderation and thermal-neutron absorption within one lightweight plastic sheet.
When fast neutrons enter the material, collisions with hydrogen nuclei in the polyethylene matrix help reduce their energy. After the neutrons have been slowed to thermal or lower-energy levels, the boron-containing component helps absorb them. This two-stage moderation-and-absorption mechanism makes the material suitable for neutron shielding panels, radiation protection doors, equipment housings and multilayer shielding systems.
General information about neutron radiation is available in the
Wikipedia explanation of neutron radiation.
Information about boron and the neutron-capture properties of boron-10 can be found in the
Wikipedia explanation of boron.
Polyethylene contains a high proportion of hydrogen atoms. Because the mass of a hydrogen nucleus is close to the mass of a neutron, collisions between fast neutrons and hydrogen nuclei can transfer a significant amount of neutron energy. Repeated collisions gradually slow the fast neutrons and make them easier to absorb.
The UHMWPE matrix therefore works primarily as a neutron-moderating material. The actual moderation performance depends on the neutron energy spectrum, material thickness, material density and the structure of the complete shielding system.
After fast neutrons have been slowed, the boron-containing material helps capture thermal neutrons. Boron-10 has a strong thermal-neutron capture capability and is widely associated with neutron-absorbing applications.
The shielding material must contain a controlled and evenly distributed boron-containing phase. Uniform distribution helps reduce local differences in neutron absorption performance across the sheet.
Using polyethylene without a neutron-absorbing additive can moderate fast neutrons, but some slowed neutrons may remain within or pass through the shielding assembly. Adding a boron-containing compound allows the material to combine neutron slowing and neutron capture in a single panel.
More information about the general nuclear process involved is available in the
Wikipedia explanation of neutron capture.
UHMWPE is known for its impact resistance, low moisture absorption, low coefficient of friction and resistance to many corrosive chemicals. Additional material information is available in the
Wikipedia explanation of ultra-high-molecular-weight polyethylene.
Boron Loaded UHMWPE Sheet can be used in facilities and equipment where neutron radiation must be moderated and absorbed. Typical applications include:
For more information about molded UHMWPE sheets and custom engineering plastic components, visit our
UHMWPE sheet manufacturing website.
| Product Name | Boron Loaded UHMWPE Sheet |
|---|---|
| Base Material | Ultra-high-molecular-weight polyethylene |
| Shielding Function | Fast-neutron moderation and thermal-neutron absorption |
| Typical Nominal Boron Content | 5%, 10%, 15%, 20% or 30% |
| Typical Thickness | 10–200 mm |
| Extra-Thick Molded Plate | Up to approximately 300 mm after production feasibility review |
| Common Sheet Size | 1000 × 2000 mm |
| Optional Sheet Sizes | 1220 × 2440 mm and 1500 × 3000 mm |
| Custom Sizes | Available according to drawings and installation dimensions |
| Available Colors | Black, green, blue or project-specified colors |
| Processing Methods | Cutting, drilling, milling, countersinking, grooving and CNC machining |
| Supply Form | Full sheets, cut-to-size panels, blocks and finished machined components |
The specifications listed above are common production options and do not represent fixed values for every order. Final sheet dimensions, thickness tolerances, material density, boron formulation and inspection requirements should be confirmed before production.
Boron Loaded UHMWPE Sheet can be manufactured with different nominal boron contents according to shielding calculations and project requirements. Common nominal options include 5%, 10%, 15%, 20% and 30%.
The customer should clearly specify how the boron percentage is defined. The percentage may refer to elemental boron content, boron carbide content, boron oxide content or the total percentage of another boron-containing compound. These values are not interchangeable.
Different boron formulations may affect material density, neutron absorption capability, mechanical strength, impact resistance, surface quality and machining performance. The required formulation should therefore be confirmed through technical documentation rather than selected only by the percentage shown in the product name.
In addition to complete molded sheets, the material can be processed into finished shielding components according to customer drawings, samples and installation dimensions.
Available processing services include:
Stepped, overlapping and interlocking panel structures can help reduce direct gaps between adjacent sheets. Joint design is particularly important around panel connections, doors, corners, cable openings, ventilation channels and equipment penetrations.
Custom molding and machining information is available through our
custom UHMWPE sheet and plastic machining services.
The required Boron Loaded UHMWPE Sheet thickness cannot be selected only according to the nominal boron content. A professional shielding calculation should consider the complete radiation field and installation environment.
Important design factors include:
Radiation protection generally requires coordinated control of exposure time, distance and shielding. More background information is available in the
Wikipedia explanation of radiation protection.
Boron Loaded UHMWPE Sheet is primarily designed for neutron moderation and thermal-neutron absorption. It should not automatically be described as a complete standalone shielding material for gamma rays or X-rays.
When a project includes mixed neutron and photon radiation, the shielding assembly may require a multilayer structure. Boron-loaded polyethylene can be combined with lead, steel or other high-density materials according to the calculated radiation spectrum.
High-density and high-atomic-number materials are commonly associated with attenuation of X-rays and gamma rays. General information about this type of material is available in the
Wikipedia explanation of lead shielding.
Quality inspection for Boron Loaded UHMWPE Sheet may include raw-material verification, formulation control, molding-process control, dimensional inspection, surface inspection and final machining inspection.
Depending on the project, customers may request the following information:
To prepare an accurate quotation, please provide the following project information:
The final shielding thickness, material formulation and panel arrangement should be reviewed by a qualified radiation protection engineer, health physicist, medical physicist or authorized project professional before manufacturing and installation.
Check drawings for full specifications and confirm materials according to service conditions to prevent product defects.
Inspect all key processing steps and fully verify dimensions, holes, grooves and fitting surfaces.
Deburr, chamfer and clean products for easy installation. Ensure uniform quality among batch products.
Choose appropriate packaging solutions based on product features to protect goods from collision, deformation and mixing during transit.
Unlike metal parts, engineering plastic components still require strict control over dimensions, holes, edges, surface, materials and assembly performance for equipment use.
Engineering plastic parts suit friction, guide, support, buffer, anti-corrosion and insulation areas. We supply UHMWPE, POM, PA, PP/PE components for conveyor, food, mining, machinery, chemical and cable systems, with custom OEM service available.
Stay updated with our latest industry insights, company updates and featured articles.
Engineering plastics are increasingly used in industrial machinery, automated production lines, conveyor systems, packaging equipment, and food-processing machines. Materials such as nylon, UHMWPE, POM, and
Both are lightweight, corrosion-resistant, wear-resistant, and suitable for CNC machining. However, they perform very differently
Wear is a common cause of failure in conveyor systems, packaging machinery, automated equipment, mining
CNC machining is widely used to produce plastic prototypes, low-volume parts, replacement components, jigs, fixtures,
Both are lightweight, corrosion-resistant, wear-resistant, and suitable for CNC machining. However, they perform very differently
Wear is a common cause of failure in conveyor systems, packaging machinery, automated equipment, mining
CNC machining is widely used to produce plastic prototypes, low-volume parts, replacement components, jigs, fixtures,
Need UHMWPE sheets & custom plastic machined/OEM parts？Send specs & material needs, free quote within 24h.
