CN117777656A - Packaging material formula and packaging method for concrete high-integrity container - Google Patents

Abstract

The invention discloses a packaging material formula and a packaging method for a concrete high-integrity container, wherein the packaging material formula comprises the following components in parts by mass: 160-220 parts of epoxy resin, 15-22 parts of diluent, 47-57 parts of flame retardant and 40-67 parts of curing agent. The packaging material has short curing time, and the cured body has excellent permeation resistance, corrosion resistance, irradiation resistance and mechanical property, and can remarkably improve the durability, inclusion and disposal safety of the concrete HIC waste package on radioactive waste.

Description

Packaging material formula and packaging method for concrete high-integrity container

Technical Field

The invention belongs to the technical field of hazardous waste treatment, and particularly relates to a packaging material formula and a packaging method for a concrete high-integrity container.

Background

The radioactive waste pollution is serious and has long duration, the radioactive waste is safely and effectively treated and disposed, the volume of the final waste is reduced as much as possible, and the radioactive waste has great significance for ensuring the environmental safety and the human health. A High Integrity Container (HIC) is a high performance container capable of efficiently containing radioactive waste over a lifetime of 300 years or more. The high integrity radioactive waste technology has significant advantages in terms of both waste disposal safety and waste minimization, and is a widely used waste disposal modality internationally.

Concrete HIC is often used as a final disposal container for holding low level horizontally radioactive solid waste. However, the concrete material is a heterogeneous multiphase system material, the cement solidified body is a solid phase composed of various hydration products and residual clinker, and a porous solid structure composed of liquid and air existing in pores, and a certain gap exists between the cement matrix, the aggregate and the reinforcing material interface. These inherent microporous structures, as well as the defects of microcracks, holes and cracks created during preparation, maintenance, transportation and hoisting, lead to limited permeation resistance of the concrete material and its compatibility with waste components, affecting the long-term disposal safety of radioactive waste.

In order to improve the lack of permeation resistance and compatibility with waste components of concrete HIC, measures such as adding an anticorrosive lining, applying an anticorrosive coating, polymer impregnation, etc. are generally taken.

After the radioactive waste bodies are loaded into the concrete HIC, the HIC needs to be packaged (i.e., the loaded radioactive waste bodies are secured and the HIC is capped) to meet the waste storage, transport and disposal requirements.

Currently, HIC packaging operations generally have two ways: one way is that the fixing material and the sealing material are made of different materials, the operation is performed in two steps, for example, after the radioactive waste is fixed by fine sand, the HIC sealing is completed by injecting an adhesive between the cover plate and the HIC container body, the packaging operation mode is not easy to realize automatic operation, the irradiation dose rate of the waste is limited, and workers can be subjected to additional radioactive irradiation; the other way is that the fixing material and the sealing material are made of the same material, for example, cement mortar is adopted, the cement mortar can simultaneously complete the radioactive waste fixing and HIC sealing operation, but the sealing operation mode has high requirements on the permeation resistance, mechanical property and operation performance of the cement mortar, and special formulas are required to be developed and strict performance tests are required.

The existing cement mortar packaging technology level is adopted, the curing time is as long as 30 days, and in the curing period, the integrity and the inclusion of the HIC waste bag are affected in order to prevent the performance of a solidified body from being damaged, and the packaged HIC waste bag cannot be subjected to long-distance moving, impacting and other operations, so that very high requirements are put on the curing of HIC.

In addition, the cement mortar is adopted to encapsulate the concrete HIC, and at least the following disadvantages exist: the amount of secondary waste generation (mud and wastewater generated by the cleaning equipment) is large; dust pollution exists; there is a risk that the cement mortar cures inside the apparatus due to the loss of power.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a packaging material formula and a packaging method for a concrete high-integrity container, wherein the packaging material has short curing time, and a cured body has excellent permeation resistance, corrosion resistance, irradiation resistance and mechanical properties, so that the durability, the inclusion and the disposal safety of a concrete HIC waste package on radioactive wastes can be remarkably improved.

The technical scheme for solving the technical problems is as follows:

according to one aspect of the invention, there is provided an encapsulating material formulation for a concrete high integrity container comprising the following components in parts by mass: 160-220 parts of epoxy resin, 15-22 parts of diluent, 47-57 parts of flame retardant and 40-67 parts of curing agent.

Preferably, the epoxy resin is one or a mixture of bisphenol a epoxy resin and hydrogenated bisphenol a epoxy resin which are liquid at normal temperature.

Preferably, the curing agent is a mixture of two or more of a modified phenolic amine curing agent, a polyether amine curing agent and an alicyclic amine curing agent which are liquid at normal temperature.

Preferably, the diluent is a mono-or di-epoxy reactive diluent having a viscosity of < 25cps (25 ℃).

Preferably, the flame retardant is a liquid halogen-free flame retardant.

According to another aspect of the present invention, there is provided a method of packaging a high integrity concrete container, comprising the steps of:

1) According to the above packaging material formula, weighing epoxy resin, flame retardant and diluent, uniformly stirring in a negative pressure environment, and heating to a set temperature to obtain a material A;

2) Weighing a curing agent according to the above packaging material formula, uniformly stirring in a negative pressure environment, and heating to a set temperature to obtain a material B;

3) Delivering the materials A and B to a static mixer according to the formula proportion, and mixing to obtain a packaging material;

4) Injecting the packaging material into concrete HIC filled with radioactive waste objects to fix the radioactive waste objects and cover the HIC;

5) And standing and curing until the injected packaging material is solidified to form a concrete HIC waste bag.

Preferably, in step 1) and step 2), the negative pressure environment has a pressure of-0.02 MPa to-0.01 MPa.

Preferably, in step 1) and step 2), the set temperature is set according to an ambient temperature, wherein:

when the ambient temperature is less than or equal to 25 ℃, the set temperature is 35-45 ℃;

when the ambient temperature is more than 25 ℃, the set temperature is 30-35 ℃.

Preferably, in step 1) and step 2), the stirring process includes:

the low-speed stirring is carried out at a first speed, and after the temperature rises to the set temperature, the rapid stirring is carried out at a second speed.

Preferably, the temperature is maintained at 10℃to 35℃during the standing maintenance.

Compared with the prior art, the packaging material formula and the packaging method for the concrete high-integrity container have at least the following beneficial effects:

(1) The method adopts a brand new packaging material formula, wherein the polymer material is solidified to form a polymer material with a three-dimensional network structure, the permeation resistance and the corrosion resistance are obviously superior to those of the cement mortar material commonly used in the prior art, and the formed concrete HIC waste bag has high durability and radionuclide inclusion; in addition, the liquid polymer monomer material of the packaging material adopted by the method before curing can infiltrate into pores, microcracks and cavities of the inner wall of the concrete HIC, repair of the defects is completed after crosslinking and curing, the anti-permeability performance and the shock resistance of the concrete HIC are further improved, corrosion of a metal barrel, release of radioactive nuclides to the environment and corrosion of internal wastes to an HIC container due to long-term treatment environment are avoided, and the anti-radiation performance and the mechanical performance are good.

(2) The operability is good. The initial state of the raw materials of the packaging material formula adopted by the method is liquid, so that the packaging material is convenient to mix and convey, the formula does not contain water or volatile components, and the performance of a solidified body is not influenced by the dryness of the HIC container and the water content of air.

(3) The equipment is simple and the occupied area is small. The raw materials of the packaging material formula adopted by the method are in a liquid state in initial state, so that the mixing and the conveying are convenient, the equipment scale is small, and compared with cement mortar packaging equipment, air purifying equipment and a waste liquid treatment device are not needed; and the curing time is short (1-10 days), so that the problems of long curing time and large curing area requirement of the cement mortar material are avoided.

(4) The secondary waste is less, and no dust pollution is caused. According to the method, the scheme that the material A and the material B are respectively prepared is adopted, after batch operation is finished, only the static mixer is required to be cleaned or replaced independently, and the batching tank, the conveying pipeline and the equipment are not required to be cleaned, so that the problems of large pollution area of cement mortar material equipment, large secondary waste production, difficult treatment and dust pollution are avoided.

(5) The method can be used for treating various wastes such as waste resin, waste filter media (waste activated carbon, zeolite and the like), slurry, incineration ash, dry salt and the like generated in the nuclear industry, and has wide application range.

Drawings

FIG. 1 is a schematic illustration of a method for concrete high integrity container packaging in accordance with an embodiment of the present invention;

fig. 2 is a schematic structural view of a concrete HIC waste bag formed by a method for concrete high integrity container packaging in accordance with an embodiment of the invention.

In the figure: 1-waste objects; 2-concrete high integrity container; 3-concrete HIC cover plate; 4-packaging material.

Detailed Description

In order that those skilled in the art will better understand the technical solutions of the present invention, a clear and complete description of the technical solutions of the present invention will be provided below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.

In the description of the present invention, it should be noted that, the terms "upper" and the like indicate an orientation or a positional relationship based on the orientation or the positional relationship shown in the drawings, and are merely for convenience and simplicity of description, and do not indicate or imply that the apparatus or element in question must be provided with a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Aiming at the problems of long curing time, poor permeation resistance, poor compatibility with waste and the like of cement mortar serving as an encapsulating material adopted by the existing concrete HIC encapsulating technology, the invention discloses an encapsulating material formula for a concrete high-integrity container, which comprises the following components in parts by mass: 160-220 parts of epoxy resin, 15-22 parts of diluent, 47-57 parts of flame retardant and 40-67 parts of curing agent.

Furthermore, the invention also discloses a packaging method for the concrete high-integrity container, which comprises the following steps:

1) According to the above packaging material formula, weighing epoxy resin, flame retardant and diluent, uniformly stirring in a negative pressure environment, and heating to a set temperature to obtain a material A;

2) Weighing a curing agent according to the above packaging material formula, uniformly stirring in a negative pressure environment, and heating to a set temperature to obtain a material B;

3) Delivering the materials A and B to a static mixer according to the formula proportion, and mixing to obtain a packaging material;

4) Injecting the packaging material into concrete HIC filled with radioactive waste objects to fix the radioactive waste objects and cover the HIC;

5) And standing and curing until the injected packaging material is solidified to form a concrete HIC waste bag.

Example 1

The embodiment discloses a packaging material formula for a concrete high-integrity container, which comprises the following components in parts by mass: 160-220 parts of epoxy resin, 15-22 parts of diluent, 47-57 parts of flame retardant and 40-67 parts of curing agent.

In some embodiments, the epoxy resin is one or a mixture of bisphenol a epoxy resin, hydrogenated bisphenol a epoxy resin, or both, that is liquid at ambient temperature.

In some embodiments, the curing agent is a modified phenolic amine curing agent, a polyether amine curing agent, a mixture of two or more of a phenolic amine curing agent and a cycloaliphatic amine curing agent, preferably a mixture of a phenolic amine curing agent and a cycloaliphatic amine curing agent phenol, or a mixture of an phenolic amine curing agent, a cycloaliphatic amine curing agent and a polyether amine curing agent, wherein the mass ratio of phenolic amine curing agent+cycloaliphatic amine curing agent/polyether amine curing agent is preferably: 100 parts per 0-50 parts.

In some embodiments, the diluent is a mono-or di-epoxy reactive diluent having a viscosity of < 25cps (25 ℃).

In some embodiments, the flame retardant is a liquid halogen-free flame retardant.

The formula of the packaging material for the concrete high-integrity container is short in curing time, and the prepared packaging material has excellent permeation resistance, corrosion resistance, irradiation resistance and mechanical properties.

Example 2

As shown in fig. 1, the embodiment discloses a packaging method for a concrete high-integrity container, which comprises the following steps:

1) According to the formula of the packaging material in the embodiment 1, weighing epoxy resin, a flame retardant and a diluent, uniformly stirring in a negative pressure environment, and heating to a set temperature to obtain a material A;

2) According to the packaging material formula described in example 1, weighing a curing agent, uniformly stirring in a negative pressure environment, and heating to a set temperature to obtain a material B;

3) Delivering the materials A and B to a static mixer according to the formula proportion, and mixing to obtain a packaging material;

4) Injecting the packaging material into the concrete HIC filled with the radioactive waste objects to fix the radioactive waste objects and cover the concrete HIC;

5) And standing and curing until the injected packaging material is solidified to form a concrete HIC waste bag.

Specifically, according to the formulation of the encapsulating material described in example 1, the epoxy resin, the diluent and the flame retardant are proportionally put into the compounding tank a, and the curing agent is put into the compounding tank B; starting a vacuum device to vacuumize a batching tank A and a batching tank B to a negative pressure environment respectively, starting a heating device and a stirring device to heat and stir the batching tank A and the batching tank B respectively, and obtaining a material A in the batching tank A and a material B in the batching tank B after the temperature of the materials in the batching tank A and the batching tank B rises to a set temperature and is uniformly stirred; placing radioactive waste 1 (steel drum or similar waste bag containing waste) in a concrete high integrity container 2 and covering with concrete HIC cover plate 3; according to the formula of the packaging material and the densities of the material A and the material B, calculating to obtain the volume ratio of the material A to the material B, starting a metering pump, and simultaneously pumping the material A and the material B into a static mixer according to the volume ratio to uniformly mix to obtain the packaging material 4; injecting the packaging material 4 into the HIC inner space through the injection port of the HIC, and stopping injection when the packaging material 4 reaches the top of the HIC, namely filling the whole HIC inner space, so as to finish packaging; the encapsulated HIC is transferred to a curing zone for static curing until the injected encapsulating material 4 cures to form a concrete HIC waste package (as shown in fig. 2).

In some embodiments, in step 1) and step 2), the negative pressure environment has a pressure of-0.02 MPa to-0.01 MPa.

In some embodiments, in step 1) and step 2), the set temperature is set according to an ambient temperature, such as:

when the ambient temperature is less than or equal to 25 ℃, the set temperature is preferably 35-45 ℃;

when the ambient temperature is > 25 ℃, the set temperature is preferably 30-35 ℃.

In some embodiments, in step 1) and step 2), the stirring process comprises: in the initial stage of material mixing, the stirring speed is slower, and after the temperature reaches the set temperature, the stirring speed is increased, and stirring is continued for a period of time, preferably 1-3 minutes.

Specifically, the low-speed stirring is performed at a first speed, and when the temperature rises to a set temperature, the rapid stirring is performed at a second speed.

In this embodiment, the first speed is 15r/min to 80r/min, and the second speed is 100r/min to 200r/min.

In some embodiments, the temperature of the curing zone is maintained at 10 ℃ to 35 ℃ during the rest curing.

The solidified body has excellent permeation resistance, corrosion resistance, irradiation resistance and mechanical property, and can remarkably improve the durability, inclusion and disposal safety of the concrete HIC waste package on radioactive waste

The encapsulation method for the concrete high-integrity container of the embodiment has the following effects:

(1) The method adopts a brand new packaging material formula, wherein the polymer material is solidified to form a polymer material with a three-dimensional network structure, the permeation resistance and the corrosion resistance are obviously superior to those of the cement mortar material commonly used in the prior art, and the formed concrete HIC waste bag has high durability and radionuclide inclusion; in addition, the liquid polymer monomer material of the packaging material adopted by the method before curing can infiltrate into pores, microcracks and cavities of the inner wall of the concrete HIC, repair of the defects is completed after crosslinking and curing, the anti-permeability performance and the shock resistance of the concrete HIC are further improved, corrosion of a metal barrel, release of radioactive nuclides to the environment and corrosion of internal wastes to an HIC container due to long-term treatment environment are avoided, and the anti-radiation performance and the mechanical performance are good.

(2) The operability is good. The initial state of the raw materials of the packaging material formula adopted by the method is liquid, so that the packaging material is convenient to mix and convey, the formula does not contain water or volatile components, and the performance of a solidified body is not influenced by the dryness of the HIC container and the water content of air.

(3) The equipment is simple and the occupied area is small. The raw materials of the packaging material formula adopted by the method are in a liquid state in initial state, so that the mixing and the conveying are convenient, the equipment scale is small, and compared with cement mortar packaging equipment, air purifying equipment and a waste liquid treatment device are not needed; and the curing time is short (1-2 days), so that the problems of long curing time and large curing area requirement of the cement mortar material are avoided.

(4) The secondary waste is less, and no dust pollution is caused. According to the method, the scheme that the material A and the material B are respectively prepared is adopted, after batch operation is finished, only the static mixer is required to be cleaned or replaced independently, and the batching tank, the conveying pipeline and the equipment are not required to be cleaned, so that the problems of large pollution area of cement mortar material equipment, large secondary waste production, difficult treatment and dust pollution are avoided.

(5) The method can be used for treating various wastes such as waste resin, waste filter media (waste activated carbon, zeolite and the like), slurry, incineration ash, dry salt and the like generated in the nuclear industry, and has wide application range.

Example 3

The embodiment discloses a packaging method for a concrete high-integrity container, which comprises the following steps:

weighing 180kg of liquid bisphenol A epoxy resin, 18kg of single epoxy reactive diluent and 50kg of liquid halogen-free flame retardant, putting into a batching tank A, starting a vacuum device to vacuumize the batching tank A to a negative pressure environment of-0.02 MPa to-0.01 MPa, simultaneously starting a heating device and a stirring device to heat the batching tank A, stirring at a speed of 15 r/min-80 r/min, and when the temperature of the materials in the batching tank A is raised to 35 ℃, increasing the stirring speed to 100 r/min-200 r/min, and continuing stirring for 2-3 min to obtain a material A;

weighing 43kg of curing agent (specifically, a liquid modified phenolic amine curing agent and a liquid polyether amine curing agent mixture, wherein the mass ratio of the liquid modified phenolic amine curing agent to the liquid polyether amine curing agent mixture is 100 parts per 50 parts), putting the curing agent into a batching tank B, starting a vacuum device to vacuumize the batching tank B to a negative pressure environment of-0.15 MPa, simultaneously starting a heating device and a stirring device to heat the batching tank B, stirring at a speed of 15-80 r/min, and when the temperature of materials in the batching tank B is raised to 35 ℃, increasing the stirring speed to 100-200 r/min, and continuing stirring for 2-3 min to obtain a material B;

placing a steel drum filled with wastes into concrete HIC, and covering an HIC cover plate;

the flow ratio (volume ratio) of the material A to the material B of the metering pump is set to be 10:4, starting a metering pump, and simultaneously pumping the material A and the material B into a static mixer according to the volume ratio to uniformly mix to obtain a packaging material;

injecting the packaging material into the HIC inner space through the injection port of the HIC, stopping injecting after the packaging material reaches the top of the HIC, and completing packaging;

transferring the encapsulated HIC to a curing area for standing curing at 15-20 ℃ until the injected encapsulating material is cured to form a concrete HIC waste bag.

Wherein after the capping operation is completed, the mixer may be removed for disposal as non-radioactive waste.

Example 4

This example discloses a method for packaging a concrete high integrity container, which has substantially the same steps as in example 3, except that: the raw materials of the packaging material formula are different; the ambient temperature is different from the preset temperature of the heating process.

Specifically, the formulation of the encapsulation material used in this embodiment is: 180kg of liquid bisphenol A epoxy resin, 21kg of monoepoxy reactive diluent, 52kg of liquid halogen-free flame retardant and 52kg of curing agent (specifically, a mixture of liquid modified phenolic amine curing agent and liquid polyether amine curing agent, wherein the mass ratio of the two is 100 parts per 40 parts).

In the embodiment, the curing temperature is 30-35 ℃;

in this embodiment, the preset temperature in the heating process is 30-35 ℃.

Example 5

This example discloses a method for packaging a concrete high integrity container, which has substantially the same steps as in example 3, except that: the raw materials of the packaging material formula are different; the ambient temperature is different from the preset temperature of the heating process.

Specifically, the formulation of the encapsulation material used in this embodiment is: 200kg of epoxy resin (specifically, a mixture of liquid bisphenol A epoxy resin and liquid hydrogenated bisphenol A epoxy resin according to any ratio), 22kg of monoepoxy reactive diluent, 56kg of liquid halogen-free flame retardant and curing agent (specifically, a mixture of liquid modified phenolic amine curing agent, liquid polyether amine curing agent and liquid alicyclic amine curing agent, wherein the mass ratio of the liquid phenolic amine curing agent to the liquid alicyclic amine curing agent/liquid polyether amine curing agent is preferably 100 parts/30 parts) and 55kg.

In the embodiment, the curing temperature is 30-35 ℃;

in this embodiment, the preset temperature in the heating process is 35-40 ℃.

Example 6

This example discloses a method for packaging a concrete high integrity container, which has substantially the same steps as in example 3, except that: the raw materials of the packaging material formula are different; the ambient temperature is different from the preset temperature of the heating process.

Specifically, the formulation of the encapsulation material used in this embodiment is: 160kg of liquid hydrogenated bisphenol A epoxy resin, 15kg of double epoxy reactive diluent, 47kg of liquid halogen-free flame retardant and 40kg of curing agent (specifically, a mixture of liquid alicyclic amine curing agent and liquid polyether amine curing agent, wherein the mass ratio of the two is 100 parts per 20 parts);

in the embodiment, stirring is carried out at a speed of 25-60 r/min in the material mixing tank A, when the temperature of the material in the material mixing tank A is raised to 45 ℃, the stirring speed is increased to 130-180 r/min, and stirring is continued for 2-3 min to obtain a material A;

in the embodiment, the stirring is carried out in the material mixing tank B at a speed of 35 r/min-45 r/min, when the temperature of the material in the material mixing tank B is raised to 45 ℃, the stirring speed is increased to 140 r/min-160 r/min, and the stirring is continued for 2-3 min, so as to obtain a material B;

in the embodiment, the curing temperature is 10-25 ℃;

example 7

This example discloses a method for packaging a concrete high integrity container, which has substantially the same steps as in example 3, except that: the raw materials of the packaging material formula are different; the ambient temperature is different from the preset temperature of the heating process.

Specifically, the formulation of the encapsulation material used in this embodiment is: 220kg of liquid bisphenol A epoxy resin, 19kg of double epoxy reactive diluent, 57kg of liquid halogen-free flame retardant and 67kg of curing agent (specifically, a mixture of liquid modified phenolic amine curing agent and liquid alicyclic amine curing agent according to any ratio, wherein the mass ratio of the two is 100 parts per 10 parts);

in the embodiment, stirring is carried out at a speed of between 35 and 55r/min in the material mixing tank A, and when the temperature of the material in the material mixing tank A is increased to 30 ℃, the stirring speed is increased to between 150 and 170r/min, and stirring is continued for 2 to 3min to obtain a material A;

in the embodiment, stirring is firstly carried out in the material mixing tank B at a speed of 45 r/min-50 r/min, when the temperature of the material in the material mixing tank B is increased to 30 ℃, the stirring speed is increased to 145 r/min-155 r/min, and stirring is continued for 2-3 min, so that a material B is obtained;

in this example, the curing temperature was 26 to 33 ℃.

The concrete HIC waste bags formed in examples 3 to 7 were respectively subjected to performance tests under the same conditions, and the test results of each performance are shown in table 1.

TABLE 1 Performance test results

As can be seen from Table 1, the concrete HIC waste bags formed in examples 3-7 all meet the standards for achieving surface treatment of nuclear waste. Therefore, the formula and the packaging method of the packaging material can truly realize the improvement of the nuclide inclusion, the waste compatibility, the durability and other performances of the concrete HIC for radioactive waste disposal, thereby playing the roles of improving the waste disposal safety, simplifying the waste disposal process and reducing the equipment investment and the running cost.

It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present invention, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the invention, and are also considered to be within the scope of the invention.

Claims (10)

1. The packaging material formula for the high-integrity concrete container is characterized by comprising the following components in parts by mass: 160-220 parts of epoxy resin, 15-22 parts of diluent, 47-57 parts of flame retardant and 40-67 parts of curing agent.

2. The encapsulating material formulation for a concrete high integrity container according to claim 1, wherein the epoxy resin is one or a mixture of bisphenol a epoxy resin, hydrogenated bisphenol a epoxy resin, or both, which is liquid at normal temperature.

3. The encapsulating material formulation for a high integrity concrete container according to claim 1, wherein the curing agent is a modified phenolic amine curing agent, a polyether amine curing agent, or a mixture of two or more of alicyclic amine curing agents which are liquid at normal temperature.

4. The encapsulating material formulation for a high integrity container of concrete according to claim 1, wherein the diluent is a mono-or di-epoxy reactive diluent having a viscosity < 25cps (25 ℃).

5. The encapsulating material formulation for a high integrity concrete container according to claim 1, wherein the flame retardant is a liquid halogen free flame retardant.

6. A method of packaging a high integrity concrete container comprising the steps of:

1) According to the packaging material formula of any one of claims 1-5, weighing epoxy resin, flame retardant and diluent, uniformly stirring in a negative pressure environment, and heating to a set temperature to obtain a material A;

2) According to the packaging material formula of any one of claims 1-5, weighing a curing agent, uniformly stirring in a negative pressure environment, and heating to a set temperature to obtain a material B;

3) Delivering the materials A and B to a static mixer according to the formula proportion, and mixing to obtain a packaging material;

4) Injecting the packaging material into concrete HIC filled with radioactive waste objects to fix the radioactive waste objects and cover the HIC;

5) And standing and curing until the injected packaging material is solidified to form a concrete HIC waste bag.

7. The method of encapsulating a high integrity concrete container according to claim 6, wherein, in step 1) and step 2),

the pressure of the negative pressure environment is minus 0.02MPa to minus 0.01MPa.

8. The method of packaging a high integrity concrete container according to claim 6, wherein in step 1) and step 2), the set temperature is set according to ambient temperature, wherein:

when the ambient temperature is less than or equal to 25 ℃, the set temperature is 35-45 ℃;

when the ambient temperature is more than 25 ℃, the set temperature is 30-35 ℃.

9. The method of packaging a high integrity concrete container according to claim 6, wherein in step 1) and step 2), the stirring process comprises:

the low-speed stirring is carried out at a first speed, and after the temperature rises to the set temperature, the rapid stirring is carried out at a second speed.

10. The method of encapsulating a high integrity container for concrete according to any of claims 6 to 9, wherein the temperature is maintained between 10 ℃ and 35 ℃ during the standing maintenance.