Radiation resistant rubber
■ Radiation resistant rubber
Research and development on radiation-resistant rubber is conducted in cooperation with the Japan Atomic Energy Agency, an independent administrative corporation (currently a national research and development corporation). Radiation-resistant rubber was developed in joint research for the improvement of radiation resistant rubber employed in rubber shock-absorbing materials and seals used in the high intensity proton accelerator facility (J-PARC). Examples of commercialization of the product are exhibited at the Sixth Industry-Academia-Government Cooperation Conference.
■ Characteristics of radiation-resistant rubber
- Usable in high-intensity radiation environments.
- Improved durability of rubber materials allows for reduced material costs.
- Contributes to a reduction in the volume of radioactive waste materials.
- Reduces exposure of personnel to radiation during inspection, maintenance, and replacement work.
- Improves reliability of equipment.
- A comprehensive product range is available (sheets, packings, seals, etc.)
■ Radiation types and characteristics
●Radiation types and shielding methods
|α rays||Charged particle radiation||High-speed helium nuclei|
|β rays||Charged particle radiation||High-speed electron flow|
|γ and χ rays||Electromagnetic radiation||Short-wavelength electromagnetic radiation|
|Neutron rays||Non-charged particle radiation||Flow of neutrons comprising the atomic nucleus|
Absorbed dose: Gray (Gy)
Indicates the amount of energy absorbed by a substance.
1 Gy indicates absorption of 1 J of energy per kg of a substance.
Dose equivalent: Sievert (Sv)
Indicates the effect of absorbed radiation on the human body.
●Quality factor of each type of radiation
|β rays, γ rays, χ rays||1|
■ Radiation resistance of elastomers
■ Product examples
●Flexible container bags
●Packings and gaskets