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Epoxy resin composition, preparation method thereof and neutron shielding material preparation method

A technology of epoxy resin and composition, which is applied in shielding, nuclear engineering, reactors, etc., can solve the problems of poor heat resistance and anti-aging performance, and achieve the goal of improving shielding performance, improving shielding ability, and enhancing neutron shielding performance Effect

Inactive Publication Date: 2017-10-20
BEIJING GUANGKEBOYE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Existing neutron shielding materials used in spent fuel transport containers have the defects of poor heat resistance and aging resistance

Method used

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  • Epoxy resin composition, preparation method thereof and neutron shielding material preparation method
  • Epoxy resin composition, preparation method thereof and neutron shielding material preparation method
  • Epoxy resin composition, preparation method thereof and neutron shielding material preparation method

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preparation example Construction

[0062] The present invention also proposes a preparation method of the epoxy resin composition, comprising the following steps:

[0063] Mixing hydrogenated epoxy resin, heat-resistant epoxy resin, boron compound and density increasing agent to obtain a first mixture;

[0064] A curing agent is added to the first mixture to obtain the epoxy resin composition, wherein the epoxy resin contains a hydrogenated epoxy resin and a heat-resistant epoxy resin, and the heat-resistant epoxy resin is at least A compound having structural formula (1), (2), (3) and (4).

[0065] In the preparation process of the epoxy resin composition according to the technical solution of the present invention, firstly, the epoxy resin, the density increasing agent and the boron carbide powder are mixed and then added to the vacuum mixing tank, and then the stirring and heating programs are started after closing, and the rotation speed is set to 400~600r / min, the temperature is set to 40~60℃, within this...

Embodiment 1

[0075] Table 1 The proportion of each component of epoxy resin composition

[0076]

[0077] Step 1: Mix the epoxy resin, the density increasing agent, the flame retardant and the boron carbide powder into the vacuum mixing tank. After closing, start the stirring and heating program. The speed is set to 400-600r / min, and the temperature is set 40~60℃;

[0078] Step 2: Evacuate the vacuum mixing tank, maintain the vacuum degree at 50-100Pa, stir until there are no air bubbles, stop stirring and put it to normal pressure;

[0079] Step 3: Add the curing agent of the formula according to the epoxy equivalent, close the stirring cylinder and continue to vacuumize and stir, the speed is set to 400~600r / min, the vacuum degree is maintained at less than 100Pa, the temperature is maintained at 40~60℃, and the stirring time is 10 to 20 minutes to prepare the epoxy resin composition;

[0080] Step 4: The above epoxy resin composition is made into a neutron shielding material under ...

Embodiment 2

[0085] Table 3 The proportion of each component of the epoxy resin composition

[0086]

[0087] Step 1: Mix the epoxy resin, the density increasing agent, the flame retardant and the boron carbide powder into the vacuum mixing tank. After closing, start the stirring and heating program. The speed is set to 400-600r / min, and the temperature is set 40~60℃;

[0088] Step 2: Evacuate the vacuum mixing tank, maintain the vacuum degree at 50-100Pa, stir until there are no air bubbles, stop stirring and put it to normal pressure;

[0089] Step 3: Add the curing agent of the formula according to the epoxy equivalent, close the stirring cylinder and continue to vacuumize and stir, the speed is set to 400~600r / min, the vacuum degree is maintained at less than 100Pa, the temperature is maintained at 40~60℃, and the stirring time is 10 to 20 minutes to prepare the epoxy resin composition;

[0090] Step 4: The above epoxy resin composition is made into a neutron shielding material un...

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Abstract

The invention provides an epoxy resin composition comprising epoxy resin, a curing agent, a boron compound and a density increasing agent, wherein the epoxy resin comprises hydrogenation type epoxy resin and heat resistant epoxy resin. A neutron shielding material prepared from the epoxy resin composition provided by the invention has a good shielding performance, and has good heat resistance and a good anti-aging property. The invention also provides a preparation method of the epoxy resin composition, and a preparation method of the neutron shielding material which is prepared from the epoxy resin composition.

Description

technical field [0001] The present invention relates to the technical field of neutron shielding materials, in particular to an epoxy resin composition and a preparation method thereof, and a preparation method of a neutron shielding material. Background technique [0002] With the development and application of nuclear technology, the way humans obtain energy has become more and more diverse, but the treatment of medium and low radioactive nuclear waste (ie spent fuel) generated during the operation of nuclear power plants is difficult. Generally, there will be spent fuel disposal sites built around nuclear power plants. In the process of transporting spent fuel from nuclear power plants to spent fuel disposal sites, special spent fuel transport containers are required to shield the spent fuel from radiation. A commonly used spent fuel transport container includes an inner shell and an outer shell, and a neutron shielding material filled between the inner shell and the out...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K3/00C08K3/22C08K3/38G21F1/10
CPCC08L63/00C08K2003/2224C08K2003/2234C08K2003/2258C08K2201/003C08L2201/02C08L2201/08C08L2205/025C08L2205/03G21F1/10C08K3/00C08K3/22C08K3/38
Inventor 田陆黄祥沈海丰郭瑶仙江浩
Owner BEIJING GUANGKEBOYE SCI & TECH
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