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

A solid epoxy and nuclear reactor technology, applied in the direction of epoxy resin coatings, coatings, etc., can solve the problems of complex and cumbersome coating types and coating matching, unfavorable solvent diffusion nuclear island structure, and potential safety hazards for personnel health, etc., to achieve excellent The effect of radiation resistance, good thermal conductivity, and low flame spread ratio

Inactive Publication Date: 2013-11-20
XINHE NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 potenti

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0019] Example 1:

[0020] As a specific embodiment, a high-solid epoxy coating used in a variety of nuclear reactor types of the present invention is composed of two components, A and B, of which,

[0021] The first component is calculated in parts by weight, and the formula is as follows:

[0022] 25 parts of epoxy resin, specifically 20 parts of aldehyde epoxy resin and 5 parts of liquid bisphenol A epoxy,

[0023] 5 parts of epoxy reactive diluent, specifically 5 parts of resorcinol diglycidyl ether,

[0024] 30 parts of radiation-resistant pigments and fillers, specifically 10 parts of titanium dioxide, 15 parts of silica powder and 5 parts of talc,

[0025] 1 part of wetting and dispersing agent, the wetting and dispersing agent can be a solvent-based low-molecular dispersant and / or a solvent-based polymer dispersing agent, and the solvent-based low-molecular dispersing agent is mostly linear alkyl amide or branch type Polycarboxylic acids, or oligomers composed of polycarboxylic ...

Example Embodiment

[0033] Example 2:

[0034] As a specific embodiment, a high-solid epoxy coating used in a variety of nuclear reactor types of the present invention is composed of two components, A and B, of which,

[0035] The first component is calculated in parts by weight, and the formula is as follows:

[0036] 40 parts epoxy resin, specifically 25 parts novolac epoxy resin and 15 parts liquid bisphenol A epoxy,

[0037] 10 parts of epoxy reactive diluent, specifically 4 parts of resorcinol diglycidyl and 6 parts of trimethylol triglycidyl ether,

[0038] 50 parts of radiation-resistant pigments and fillers, specifically 10 parts of titanium dioxide, 5 parts of talc and 35 parts of silica powder,

[0039] 3 parts of anti-settling agent, the said anti-settling agent is selected from organic bentonite, castor oil derivatives, fumed silica, polyolefin wax (fine particles), modified hydrogenated castor oil, modified polyurea N-methylpyrrolidone solution and One or any combination of polyamide wax serie...

Example Embodiment

[0051] Example 3:

[0052] As a specific embodiment, a high-solid epoxy coating used in a variety of nuclear reactor types of the present invention is composed of two components, A and B, of which,

[0053] The first component is calculated in parts by weight, and the formula is as follows:

[0054] 35 parts of epoxy resin, specifically 15 parts of novolac epoxy resin and 20 parts of liquid bisphenol A epoxy,

[0055] 8 parts of epoxy active diluent, specifically 3 parts of resorcinol diglycidyl and 5 parts of trimethylol triglycidyl ether,

[0056] 40 parts of radiation-resistant pigments and fillers, specifically 5 parts of titanium dioxide, 10 parts of talc, 25 parts of quartz powder,

[0057] 2 parts of anti-settling agent, the said anti-settling agent is selected from organic bentonite, castor oil derivatives, fumed silica, polyolefin wax (fine particles), modified hydrogenated castor oil, modified polyurea N-methylpyrrolidone solution and One or any combination of polyamide wax se...

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PUM

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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...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D163/02C09D163/04C09D7/12
Inventor 王诗榕张武军王永涛李旺平李志高
Owner XINHE NEW MATERIALS CO LTD
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