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Silicone resin modified epoxy resin-based neutron shielding material and its preparation and application

A technology of shielding material and epoxy resin, applied in the field of shielding materials, can solve the problem of large technical gap, and achieve the effect of simple and reliable preparation method and excellent neutron shielding performance

Active Publication Date: 2020-11-13
BEIJING RADIATION APPL RES CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult for the existing epoxy resin system to meet these stringent performance requirements at the same time. Domestic research in this field is still in its infancy, and there is a large technological gap with foreign mature products.

Method used

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  • Silicone resin modified epoxy resin-based neutron shielding material and its preparation and application
  • Silicone resin modified epoxy resin-based neutron shielding material and its preparation and application
  • Silicone resin modified epoxy resin-based neutron shielding material and its preparation and application

Examples

Experimental program
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Effect test

Embodiment 1

[0053] The present embodiment provides a kind of preparation method of the epoxy resin modified by organosilicon resin, it comprises the following steps:

[0054] 100 parts by weight of bisphenol F type epoxy resin, 20 parts by weight of polymethyl silicone resin, 5 parts by weight of silane coupling agent (γ-aminopropyltriethoxysilane) and 0.5 parts by weight of catalyst two The dibutyltin laurate was mixed evenly, and then the obtained mixed system was reacted at 80° C. for 6 hours to obtain the silicone resin-modified epoxy resin.

Embodiment 2

[0056] Get 50 weight parts of anti-radiation auxiliary agent (boron carbide); ℃ vacuum drying, ready to use.

Embodiment 3

[0058] This embodiment provides a silicone-modified epoxy resin-based neutron shielding material, wherein the neutron shielding material is mainly prepared from the following raw material formula in parts by weight:

[0059] 100 parts by weight bisphenol F type epoxy resin;

[0060] The silicone resin modified epoxy resin prepared by the embodiment 1 of 10 parts by weight;

[0061] 30 parts by weight of aromatic amine room temperature curing agent;

[0062] The active end group of 20 parts by weight is the liquid rubber-modified epoxy resin of hydroxyl;

[0063] 10 parts by weight of allyl glycidyl ether;

[0064] The boron carbide that the embodiment 2 of 5 weight parts obtains;

[0065] Magnesium hydroxide or aluminum hydroxide prepared by the embodiment 2 of 40 parts by weight;

[0066] The preparation method of the silicone-modified epoxy resin-based neutron shielding material comprises the following steps:

[0067] (1), the epoxy resin modified by silicone resin, the...

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Abstract

The invention provides an organic silicon resin modified epoxy resin neutron shielding material, preparation and an application. The material is prepared from the following raw materials in parts by weight: 20-100 parts of epoxy resin, 10-20 parts of organic silicon resin modified epoxy resin, 10-100 parts of room temperature curing agent, 5-40 parts of flexibilizer, 5-20 parts of diluent, 5-50 parts of silane coupling agent coating modified anti-radiation assistant and 20-100 parts of silane coupling agent coating modified flame-retardant functional assistant. The organosilicon modified epoxyresin neutron shielding material has excellent neutron shielding performance, mechanical properties, thermal aging, temperature tolerance and toughness; a preparation method of the neutron shieldingmaterial is simple and reliable; and since the room temperature curing agent is adopted, an irregular part can be prepared by casting at a room temperature.

Description

technical field [0001] The invention relates to an epoxy resin-based neutron shielding material modified by organosilicon resin and its preparation and application, belonging to the technical field of shielding materials. Background technique [0002] With the rapid development of my country's nuclear power industry, the number of units under construction and in operation has gradually increased, and the problem of reprocessing of high-level radioactive spent fuel discharged from the core has become increasingly prominent. According to my country's national conditions, the best way to deal with spent fuel is the dry storage method in the off-reactor intermediate storage method. The key technology core of this method lies in the preparation of spent fuel storage tanks. Metal spent fuel storage tanks generally use stainless steel as the main structure, and shielding materials are used in the interlayer. The shielding material can effectively prevent neutrons and gamma rays wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L83/10C08K3/38C08K3/22G21F1/10
CPCC08K2003/2224C08K2003/2227C08L63/00C08L2201/02C08L2205/025C08L2205/03G21F1/10C08L83/10C08K3/38C08K3/22
Inventor 马慧玲陆永俊张龙曹可王士军代培孟宪芳孙超王连才曾心苗
Owner BEIJING RADIATION APPL RES CENT
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