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High-temperature-resistant epoxy resin-based neutron and gamma-ray shielding composite material and preparation method thereof

An epoxy resin and composite material technology, applied in shielding, nuclear engineering, reactors, etc., can solve the problems of poor dimensional stability, poor heat resistance and flame retardancy of polyethylene-based shielding composite materials, and large coefficient of linear expansion. Excellent dimensional stability, easy construction, wide range of adjustable density

Active Publication Date: 2017-01-11
BEIJING RADIATION APPL RES CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its high boron content or hydrogen content, it has excellent radiation shielding properties, but polyethylene-based shielding composites have poor heat resistance and flame retardancy, and have a large linear expansion coefficient and poor dimensional stability

Method used

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  • High-temperature-resistant epoxy resin-based neutron and gamma-ray shielding composite material and preparation method thereof
  • High-temperature-resistant epoxy resin-based neutron and gamma-ray shielding composite material and preparation method thereof
  • High-temperature-resistant epoxy resin-based neutron and gamma-ray shielding composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0068] This example provides a method for preparing a high temperature resistant phenolic epoxy resin based neutron and gamma ray shielding composite material, the process flow chart is as follows figure 1 shown, from figure 1 It can be seen that the preparation method comprises the following specific steps;

[0069] (1) The shielding composite material is prepared by parts by weight from the following components (as shown in Table 1):

[0070] Table 1

[0071] raw material name parts by mass manufacturer Novolak epoxy resin F44 80 copies Jinan Yisheng Resin Co., Ltd. Pyromellitic dianhydride 20 copies Langfang Beide Trading Co., Ltd. acetone 60 copies Beijing Chemical Plant boron carbide 33 copies Ning'an Bohai Boron Carbide Co., Ltd. Tungsten powder 140 copies Beijing Youxinglian Nonferrous Metals Co., Ltd. magnesium hydroxide 100 copies Weifang Haililong Magnesium Industry Co., Ltd. glass fiber 40 c...

Embodiment 2

[0076] This example provides a method for preparing a high-temperature-resistant bisphenol A epoxy resin-based neutron and gamma-ray shielding composite material, and its process flow chart is as follows figure 2 shown, from figure 2 It can be seen that the preparation method comprises the following steps;

[0077] (1) The shielding composite material is prepared by parts by weight from the following components (as shown in Table 2):

[0078] Table 2

[0079]

[0080]

[0081] (2) First slowly add polyamide 650 into bisphenol A epoxy resin E51, stir evenly to obtain a mixed solution. Add benzyl glycidyl ether, phenol, amino-terminated liquid nitrile rubber, boron oxide, tungsten powder, magnesium hydroxide, and glass fiber in sequence to the mixture, stir evenly, and vacuum defoam to obtain a composite glue;

[0082] (3) Cast the above composite glue into a mold, keep it warm at 80°C for 2 hours, and vacuum <0.03MPa, after curing and molding, cool to room temperatur...

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Abstract

The invention provides a high-temperature-resistant epoxy resin-based neutron and gamma-ray shielding composite material and a preparation method thereof. The high-temperature-resistant epoxy resin-based neutron and gamma-ray shielding composite material is prepared from, by weight, 50-100 parts of epoxy resin, 10-100 parts of curing agent, 100-800 parts of radiation-resistant functional auxiliary, 5-100 parts of fiber reinforced material, 10-150 parts of flame retardant functional filler and 1-50 parts of processing aid. The high-temperature-resistant epoxy resin-based neutron and gamma-ray shielding composite material has excellent neutron and gamma-ray shielding performance, dimensional stability and flame retardation and keeps stable neutron and gamma-ray shielding performance when working within 120-200 DEG C for a long time.

Description

technical field [0001] The invention relates to a high-temperature-resistant epoxy resin-based neutron and gamma-ray shielding composite material and its preparation, belonging to the technical field of nuclear radiation shielding and protection. Background technique [0002] On a global scale, the nuclear power industry is developing rapidly, and the radiation safety and protection issues of nuclear power plants and nuclear reactors are becoming more and more important. When using nuclear energy, effective shielding and protection of neutron radiation is required. According to the different energy of neutrons, it can be slowed down or absorbed. At the same time, effective protection for secondary gamma rays is also required. [0003] At present, the radiation shielding materials used in nuclear reactors, nuclear fuel plants and other places are mostly composite materials based on polyethylene, paraffin, heavy concrete and aluminum boride, among which the most widely used ar...

Claims

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Application Information

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IPC IPC(8): C08L63/04C08L63/00C08L13/00C08L15/00C08K13/04C08K7/14C08K3/38C08K3/08C08K3/22B29C39/02B29C39/44G21F1/10
CPCB29C39/02B29C39/44C08L63/00C08L63/04C08L2201/02C08L2201/08G21F1/10C08L13/00C08K13/04C08K7/14C08K3/38C08K2003/0887C08K2003/2224C08L15/00
Inventor 孙超秦培中孟宪芳张龙郭广水王连才曾心苗
Owner BEIJING RADIATION APPL RES CENT
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