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A kind of epoxy resin material and preparation method thereof

A technology of epoxy resin and epoxy hexane, applied in the field of epoxy resin materials and their preparation, can solve the problems of insufficient mechanical properties of room temperature curing epoxy, difficult to achieve anti-leaching properties, etc.

Active Publication Date: 2019-11-15
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, general-purpose epoxy resins have the following disadvantages when dealing with radioactive wet waste (waste resin, radioactive salt block): (1) The mechanical properties of room temperature curing epoxy are insufficient, (2) The anti-leaching performance of the material after irradiation is difficult to reach GB14569.2 - Relevant requirements in the 1993 "Low and Medium Level Radioactive Waste Solidified Body Performance Requirements Plastic Solidified Body" standard

Method used

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  • A kind of epoxy resin material and preparation method thereof
  • A kind of epoxy resin material and preparation method thereof
  • A kind of epoxy resin material and preparation method thereof

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preparation example Construction

[0047] The raw materials for preparing the epoxy resin material provided by the invention include 10-20 parts of carbon nanotube-based iron-based imidazole ionic liquid. The carbon nanotube-based iron-based imidazole ionic liquid has the structure of formula II:

[0048]

[0049] The R is selected from -CH 3 ,-C 4 h 9 ,-C 6 h 13 or -C 11 h 23 .

[0050] In the present invention, the carbon nanotube-based iron-based imidazolium ionic liquid is preferably prepared by the following method:

[0051] a) reacting 1-alkylimidazole and methyl chloride to obtain 1-alkyl-3-methylimidazolium chloride salt ionic liquid; the alkyl group in the 1-alkylimidazole is selected from methyl, butyl, hexyl or deca An alkyl group; 1-alkyl-3-methylimidazolium chloride salt ionic liquid is reacted with ferric chloride to obtain an iron-based imidazolium ionic liquid;

[0052] b) In the presence of dimethylformamide, dicyclohexylcarbodiimide (DCC) and 4-dimethylaminopyridine (DMAP), react c...

Embodiment 1

[0069] Add a certain amount of dichloroethane, boron trifluoride·ether solution and ethylene glycol into the reaction kettle, stir evenly, start to add epichlorohydrin dropwise, and control the whole reaction temperature at 18-23°C. After the epichlorohydrin was added dropwise, the temperature of the reaction solution was raised to 40° C., and the reaction was carried out for one hour. After the reaction solution is cooled to room temperature, it is washed repeatedly with saturated sodium bicarbonate solution and deionized water until it becomes neutral, and dichloroethane is distilled off to obtain hydroxyl-terminated polyepichlorohydrin (PECH). Dissolve the self-made PECH in an appropriate amount of toluene, heat up to 90°C and add a certain amount of analytically pure NaOH. After reacting for four hours, add HCl aqueous solution to neutralize the remaining NaOH, and wash repeatedly with deionized water until the solution is neutral. properties, after distilling the toluene,...

Embodiment 2

[0079] Add a certain amount of dichloroethane, boron trifluoride·ether solution and ethylene glycol into the reaction kettle, stir evenly, start to add epichlorohydrin dropwise, and control the whole reaction temperature at 18-23°C. After the epichlorohydrin was added dropwise, the temperature of the reaction solution was raised to 40° C., and the reaction was carried out for two hours. After the reaction solution is cooled to room temperature, it is washed repeatedly with saturated sodium bicarbonate solution and deionized water until it becomes neutral, and dichloroethane is distilled off to obtain hydroxyl-terminated polyepichlorohydrin (PECH). Dissolve the self-made PECH in an appropriate amount of toluene, heat up to 90°C and add a certain amount of analytically pure NaOH. After reacting for four hours, add HCl aqueous solution to neutralize the remaining NaOH, and wash repeatedly with deionized water until the solution is neutral. properties, after distilling the toluene...

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Abstract

The invention provides an epoxy resin material and a preparation method thereof. The epoxy resin material is prepared from the following raw materials in parts by weight: 100 parts of epoxy resin mixture; carbon nanotube-based iron-based imidazole ionic liquid having a structure of formula II 10-20 parts; 10-20 parts of amino-terminated polyether; epoxy resin mixture including bisphenol A diglycidyl ether, active toughening agent with the structure of formula I and 4,5-epoxyhexane-1,2- Diglycidyl dicarboxylate. The epoxy resin material has good mechanical properties and leaching resistance. Radiation dose 10 6 After the test, the compressive strength is 20MPa, and the vertical drop from a height of 10m to the concrete floor does not produce obvious fragmentation; after the freeze-thaw test, the volume change is less than 1%, and the compressive strength decreases by less than 10%; the volume expansion is less than 2%; the correlation on the 42nd day Nuclide leaching rate limited to Cs + <5×10 ‑4 cm / d, Co 2+ <1×10 ‑4 cm / d.

Description

technical field [0001] The invention relates to the technical field of epoxy resin, in particular to an epoxy resin material and a preparation method thereof. Background technique [0002] The development and utilization of nuclear energy has brought huge economic and social benefits to human beings, but at the same time produced a large amount of radioactive waste, which has brought a greater threat to the living environment of human beings. Therefore, how to safely and effectively dispose of radioactive waste to maximize its isolation from the biosphere has become an increasingly urgent and important issue facing the nuclear industry and nuclear science, and is a key factor affecting the sustainable and healthy development of nuclear energy. For the disposal of radioactive waste, people think that the most reasonable measure is to solidify the radioactive waste first, and then carry out the final geological disposal of the obtained solidified radioactive waste. Effective ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G59/50
CPCC08G59/50C08G59/5073
Inventor 魏巍郑春柏尹园柳美华张依帆邓鹏飏
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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