High-solid-state epoxy coating used for a plurality of nuclear reactor types

Abstract

The invention relates to the technical field of chemical coatings. A high-solid-state epoxy coating used for a plurality of nuclear reactor types comprises a first component and a second component; the first component comprises: by weight, 25-40 parts of epoxy resin, 5-10 parts of an epoxy activity diluent, 30-50 parts of a radiation resistant color filler, 0-3 parts of an anti-settling agent, 1-5 parts of a wetting dispersant, 5-10 parts of a solvent and 0-5 parts of an antifoaming agent; and the second component comprises: by weight, 20-60 parts of anacardol-modified phenolic aldehyde amine, 10-20 parts of an alicyclic amine additive product, 20-50 parts of the radiation resistant color filler, 0-5 parts of the wetting dispersant, 5-10 parts of the solvent and 0-5 parts of the antifoaming agent. In the high-solid-state epoxy coating, the volume solid part reaches up to 85%, the high-solid-state epoxy coating has a strong adhesive force to steel structures and concrete surfaces, can meet irradiation and LOCA (loss of coolant accident) compound tests, and has excellent irradiation resistance; the cumulative irradiation dose can reach 1*107Gy, the decontamination rate can reach above 95%; and the high-solid-state epoxy coating has a good heat conduction capability, a low flame propagation ratio, air permeability performances and wear resistance.

Description

technical field [0001] The invention relates to the technical field of chemical coatings, in particular to a high-solid epoxy coating used for various types of nuclear reactors. Background technique [0002] With the development goal of quadrupling China's GDP by 2020, it is estimated that the installed capacity of power generation in China will be 800-900 million kilowatts, while the existing installed capacity is only 400 million kilowatts. But in the existing power generation structure, coal power accounts for 74% of it. If the demand for electricity doubles again, the annual coal consumption will exceed 1.6 billion tons. With such a large coal consumption, sulfur dioxide and soot emissions will increase by more than 5 million tons and 53.26 million tons respectively each year. At the same time, long-distance coal transportation will increase Exacerbate environmental and transport pressures. In addition, hydropower is limited by objective conditions, and its development...

AI Technical Summary

Problems solved by technology

[0004] At present, epoxy coatings for nuclear power protection are low-solid solvent-based coatings. Most of the nuclear industry facilities are underground buildings, and the environment is closed and humid, which is not conducive to the nuclear island structure of solvent diffusion.

Solvent-based coatings are used in nuclear islands, and due to their high volatility, there are potential safety hazards to personnel health

And because my country's nuclear power development adopts the mode of introduction and independent research, the types of nuclear power reactors are rich and diverse, and the requirements for protective coatings of various reactor types are different, resulting in complex and cumbersome coating types and coating matching, and inconvenient application