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Oct 8, 2024
In the field of nuclear technology, equipment and facilities in nuclear reactors and nuclear power plants are susceptible to contamination by uranium and other radioactive elements, and require coatings that are resistant to high radiation doses for protection and decoration. However, compared with general coatings, the coatings used in these occasions have some special and higher requirements in addition to the same basic requirements.First of all, it must be resistant to nuclear radiation and be easy to decontaminate. The coatings used in nuclear fuel storage tanks and transportation pipelines must also have excellent chemical corrosion resistance and the ability to absorb radiation to prevent the environment around the radioactive source from being polluted. . The coating used in the first-level accident prevention area is required to be able to withstand long-term exposure in an environment with a temperature of 21~32°C and a relative humidity of 50%, and must pass a high-temperature and high-pressure steam environment test. The coating should also withstand high temperatures. cumulative radiation dose.
Under the action of high-energy radiation, the chemical bonds of molecules are broken and polymers are degraded. Not all coatings can be used as radiation-resistant coatings. Generally, silicone coatings become brittle when the radiation dose reaches a certain level. If the phenyl content is increased on the side chain or an arylene group is introduced on the main chain, the radiation resistance can be improved. Silicone coatings using mica powder or glass powder as fillers are highly stable to radiation and can withstand radiation doses up to 1Xl08Gy. Silicone radiation-resistant coatings have been widely used in nuclear raw material regeneration and processing plants and nuclear reactors.
Silicone alkyd resin coating is a white coating. Silicone coating is currently the coating with the highest radiation dose resistance, up to about 1011rad. The thermocouples used to measure the temperature of nuclear reactors in the former Soviet Union were coated with silicone resin paint. Epoxy coatings, silicones and silicone-epoxy resins that combine the two have better radiation resistance and are most widely used, followed by polyurethane coatings.
Our main products are MQ Silicone Resin,Silicone Resin for Mica Insulation Materials,Synthetic Leather Silicone Resin Modifier,Silicone Resin for Motor,MQ Silicone Resin Powder,Silicone Resin for H-class motors,Liquid MQ Silicone Resin,Silicone Resin Modifier for Artificial Leather.If you have any questions about silicone resin,please contact us.We will reply you as soon as possible.