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A kind of self-adhesive γ-ray rubber composite shielding material and its preparation method and application

A compound shielding and γ-ray technology, applied in the field of shielding materials, can solve the problems of large prestress, difficult construction, and application limitations, and achieve the effects of preventing deformation or relaxation, good conformity, and preventing liquid penetration

Active Publication Date: 2019-10-08
BEIJING RADIATION APPL RES CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

During construction, the prestress of the product is relatively large, especially when it is applied to the discharge port, flange, pipe, baffle, joint and corner of the device with complex shape, the construction is difficult, so this kind of rubber with the function of shielding γ rays The application of the material is greatly restricted;

Method used

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  • A kind of self-adhesive γ-ray rubber composite shielding material and its preparation method and application
  • A kind of self-adhesive γ-ray rubber composite shielding material and its preparation method and application

Examples

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Embodiment 1

[0060] This embodiment provides a method for preparing a self-adhesive γ-ray rubber composite shielding material, which includes the following steps:

[0061] Raw material formula:

[0062] Rubber matrix: 100 parts by weight of EPDM4045;

[0063] Viscosifying polymer: 25 parts by weight of liquid polyisobutylene rubber;

[0064] Reinforcing agent: 25 parts by weight of white carbon black;

[0065] Anti-gamma radiation functional additives: 85 parts by weight of lead powder, 15 parts by weight of tungsten powder;

[0066] 3 parts by weight of silane coupling agent;

[0067] Vulcanization activator: 3 parts by weight of zinc oxide, 1 part by weight of stearic acid;

[0068] Vulcanizing agent: 1.8 parts by weight of S-80;

[0069] Vulcanization accelerator: 1.8 parts by weight of ZBEC80, 0.6 parts by weight of zinc isopropylxanthate ZIX; 1.6 parts by weight of DPG80;

[0070] Antiaging agent: 3 parts by weight of microcrystalline wax;

[0071] Preparation:

[0072] Blendi...

Embodiment 2-4

[0077] Embodiment 2-4 respectively provides a kind of preparation method of self-adhesive type γ-ray rubber composite shielding material, and its difference with embodiment 1 is only that the radiation absorption dose is different in the pre-crosslinking process, used in embodiment 2-4 The absorbed doses of radiation are: 30kGy, 50kGy and 90kGy.

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Abstract

The invention provides a self-adhesion gamma-ray rubber composited shielding material and a preparation method and application thereof. The shielding material is prepared from, by weight, 100 parts of rubber base material, 5-50 parts of tackifying polymer, 10-100 parts of reinforcing agent, 10-200 parts of anti-gamma function assistant, 0-50 parts of softener, 0.5-10 parts of vulcanizing agent, 0.5-5.0 parts of vulcanization accelerator, 0.5-10 parts of vulcanizing activator and 0-5.0 parts of anti-aging agent. The invention also provides a preparation method of the shielding material and application of the shielding material in complex equipment or irregular parts. The prepared gamma-ray rubber composited shielding material has a certain degree of initial crosslinking and self-adhesion, has good shape-following property and can be self-curing after forming.

Description

technical field [0001] The invention relates to a self-adhesive γ-ray rubber composite shielding material, a preparation method and application thereof, and belongs to the technical field of shielding materials. Background technique [0002] With the continuous promotion and application of non-power nuclear technology in various fields in my country, radiation technology has been widely used in many fields such as industry, medical treatment, and scientific research. At the same time, the damage caused by radiation to the human body and the damage to the environment have gradually been recognized by human beings. In order to prevent or reduce the harm of radiation rays to human beings, radiation protection is required during the application of radiation, and radiation protection mainly depends on the performance of radiation shielding materials and the optimal design of radiation shielding structures. However, with the development of the application field of radiation techn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/16C08L23/22C08K13/02C08K3/36C08K3/08C08K3/22C08K5/09C08J3/28C08J3/24B29C35/08G21F1/10B29L7/00
Inventor 矫阳程安仁王连才陆永俊张龙曾心苗鲍矛赵雪娜汪文昭郭月莹
Owner BEIJING RADIATION APPL RES CENT