Borated 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 UHMWPE matrix helps slow fast neutrons, while the boron component helps absorb thermalized neutrons. It is suitable for nuclear medicine facilities, cyclotron rooms, accelerator shielding systems, neutron source enclosures, radiation shielding doors and laboratory equipment.
Sheets are available with different boron contents, thicknesses, dimensions and CNC-machined structures according to project drawings and radiation shielding requirements.
Borated UHMWPE Sheet is an engineered neutron shielding material designed for nuclear medicine, medical accelerator, nuclear research and radiation protection applications. It combines a hydrogen-rich ultra-high-molecular-weight polyethylene matrix with uniformly dispersed boron-containing material to provide neutron moderation and thermal-neutron absorption in one lightweight panel.
When fast neutrons enter the sheet, hydrogen atoms in the polyethylene matrix help reduce neutron energy through repeated scattering interactions. After the neutrons have been slowed to lower energy levels, the boron component helps capture the resulting thermal neutrons. This combined working mechanism makes borated polyethylene suitable for neutron shielding walls, doors, equipment enclosures, removable panels and multilayer radiation shielding systems.
General information about neutron behavior is available in the
Wikipedia explanation of neutron radiation. More information about the characteristics and applications of boron 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 that of a neutron, repeated collisions between neutrons and hydrogen nuclei can reduce the energy of fast neutrons. The UHMWPE matrix therefore acts primarily as a neutron-moderating material.
After the fast neutrons have been slowed, the boron-containing component helps absorb the thermalized neutrons. Boron-10 has a high thermal-neutron capture capability, making boron-loaded polyethylene a practical material for neutron shielding assemblies.
Stable shielding performance requires the boron-containing material to be evenly distributed throughout the polyethylene matrix. Controlled raw-material mixing, compression molding, cooling and machining processes help reduce local variations in composition, density and finished thickness.
UHMWPE is known for its impact resistance, low moisture absorption, low friction and resistance to many corrosive chemicals. Additional background information is available in the
Wikipedia explanation of ultra-high-molecular-weight polyethylene.
Borated UHMWPE Sheet can be supplied as complete molded sheets, cut-to-size panels or finished CNC-machined components. Typical applications include:
For more information about UHMWPE sheets and custom engineering plastic components, visit our
UHMWPE sheet and engineering plastic manufacturing website.
| Product Name | Borated UHMWPE Sheet |
|---|---|
| Base Material | Ultra-high-molecular-weight polyethylene |
| Typical 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 |
| Standard Sheet Size | 1000 × 2000 mm |
| Optional Sheet Sizes | 1220 × 2440 mm and 1500 × 3000 mm |
| Custom Dimensions | Available according to project drawings and installation requirements |
| Available Colors | Black, green, blue or project-specified colors |
| Processing Services | Cutting, drilling, countersinking, grooving, milling and CNC machining |
| Supply Form | Full sheets, cut panels, shielding blocks and finished machined parts |
The dimensions listed above are common production options rather than mandatory specifications. Final thickness, sheet size, dimensional tolerance, formulation and inspection standards should be confirmed according to the customer’s drawings and radiation shielding calculations.
Borated UHMWPE Sheet can be manufactured with different nominal boron contents according to project requirements. Common options include 5%, 10%, 15%, 20% and 30%.
The specification must clearly state whether the requested percentage refers to elemental boron, boron carbide, boron oxide or the total amount of a boron-containing compound. These definitions are not interchangeable and may affect material density, mechanical properties, processing performance and neutron absorption capability.
For projects requiring documented shielding performance, the material formulation, boron distribution, density, dimensional tolerance and inspection method should be confirmed before production.
In addition to complete sheets, Borated UHMWPE Sheet can be processed into finished shielding components according to drawings, samples and installation dimensions.
Available machining services include:
Stepped, overlapping or interlocking edge structures can help reduce direct gaps between adjacent shielding panels. The appropriate joint design should be determined according to the radiation direction, panel thickness and installation structure.
In nuclear medicine projects, Borated UHMWPE Sheet may be installed around neutron-producing equipment, cyclotron systems, accelerator rooms, shielding doors, service openings and equipment cabinets.
The required panel thickness cannot be selected only according to boron percentage. Shielding calculations should also consider neutron energy, source intensity, operating time, installation distance, permitted dose rate, panel joints, penetrations and possible secondary radiation.
Installation drawings should clearly show panel dimensions, joint locations, fixing methods, service openings and the relationship between borated polyethylene and other shielding materials.
Borated UHMWPE Sheet is primarily intended for neutron moderation and thermal-neutron absorption. It should not automatically be treated as a complete standalone shielding material for gamma rays or X-rays.
When neutron radiation is accompanied by gamma radiation, the shielding system may require a multilayer structure combining borated polyethylene with lead, steel or other high-density materials. The material arrangement should be determined according to the radiation source and professional shielding calculations.
General information about selecting shielding methods for different types of radiation is available in the
Wikipedia explanation of radiation protection.
Quality control for Borated UHMWPE Sheet may include raw-material verification, formulation control, molding-process control, dimensional inspection, surface inspection and machining inspection.
Depending on the project requirements, customers may specify:
To prepare an accurate quotation, please provide the following information:
Final material selection and shielding thickness should be reviewed by a qualified radiation protection engineer, medical physicist or authorized project professional before 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.
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