Ethylene propylene diene monomer flexible base neutron shielding material and preparation method thereof

A technology of rubber flexible base and shielding material, applied in the field of radiation protection, can solve the problems of high raw material price, low mechanical strength, limited use range, etc., to ensure life safety, avoid environmental pollution, and good neutron shielding effect.

Inactive Publication Date: 2019-09-17
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carbon-carbon bonded rubber polymers such as SBR and NR have unsaturated bonds in their molecular chains, and the presence of unsaturated bonds makes them prone to degradation under the action of ultraviolet rays, ozone, light and thermal radiation; silicone rubber-based neutron radiation shielding Although the material has good high temperature resistance properties, its raw material price is high and the mechanical strength of the actual product is not high, which limits its application range

Method used

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  • Ethylene propylene diene monomer flexible base neutron shielding material and preparation method thereof
  • Ethylene propylene diene monomer flexible base neutron shielding material and preparation method thereof
  • Ethylene propylene diene monomer flexible base neutron shielding material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: Preparation of EPDM flexible-based neutron shielding material (1)

[0030] The preparation raw material of EPDM flexible base neutron shielding material is as follows (parts by weight): 100 parts of EPDM rubber, 225 parts of boron carbide, 2 parts of sulfur, 5 parts of zinc oxide, dicumyl peroxide (DCP ) 2 parts, paraffin wax 7 parts, composite accelerator EM233 1 part, antioxidant RD 0.5 part, antioxidant 4010 0.5 part, N330 15 parts, N234 15 parts, process oil 2 parts.

[0031] The preparation method step of EPDM flexible base neutron shielding material is as follows (flow process see figure 1 ).

[0032] 1. EPDM raw rubber plastic training

[0033] Adjust the roller distance according to the amount of raw rubber, put the raw rubber into the rubber roller for cutting and cutting, and completely break the raw rubber; adjust the roller distance, put the broken raw rubber into the rubber roller for thinning and plasticizing, and then put the raw rubber into ...

Embodiment 2

[0040] Example 2: Preparation of EPDM Flexible Base Neutron Shielding Material (2)

[0041]The preparation raw material of EPDM flexible base neutron shielding material is as follows (parts by weight): 100 parts of EPDM rubber, 200 parts of boron nitride, 2 parts of sulfur, 5 parts of zinc oxide, dicumyl peroxide ( DCP) 2 parts, paraffin wax 7 parts, composite accelerator EM2331 parts, antioxidant RD 0.5 parts, antioxidant 40100.5 parts, N33015 parts, N23415 parts, process oil 2 parts.

[0042] The preparation method of the EPDM flexible-based neutron shielding material is the same as that in Example 1.

Embodiment 3

[0043] Example 3: Preparation of EPDM Flexible Base Neutron Shielding Material (3)

[0044] The preparation raw material of EPDM flexible base neutron shielding material is as follows (parts by weight): 100 parts of EPDM rubber, 150 parts of borax, 2 parts of sulfur, 5 parts of zinc oxide, dicumyl peroxide (DCP) 2 parts, 7 parts of paraffin, 1 part of composite accelerator EM2333, 0.5 parts of anti-aging agent RD, 0.5 parts of anti-aging agent, 15 parts of N33015 parts, 15 parts of N2341, 2 parts of process oil.

[0045] The preparation method of the EPDM flexible-based neutron shielding material is the same as that in Example 1.

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Abstract

The invention belongs to the technical field of radiation protection and relates to an ethylene propylene diene monomer flexible base neutron shielding material and a preparation method thereof. The raw materials for preparing the neutron shielding material comprise the following components in parts by weight: 50-100 parts of ethylene propylene diene monomer, 30-150 parts of a radiation-proof functional auxiliary agent, 5-14 parts of a crosslinking agent, 3-7 parts of a plasticizer, 0.4-1 part of an accelerator, 0.5-1 part of an antioxidant and 10-70 parts of a reinforcing agent. The ethylene propylene diene monomer flexible base neutron shielding material has good physical and mechanical properties, ozone and thermal oxygen aging resistance and shielding effect, and has high cost performance.

Description

technical field [0001] The invention belongs to the technical field of radiation protection, and relates to an EPDM rubber flexible base neutron shielding material and a preparation method thereof. Background technique [0002] With the continuous development and improvement of science and technology, nuclear technology has played a huge role in the fields of industry, agriculture, medical care, national defense, aerospace and aviation. However, while nuclear technology creates value for human society, it also brings radiation hazards to human society. Radiation rays may exist for a long time, pollute the natural environment, and threaten human life. [0003] For the health and sustainable development of human society, all countries in the world attach great importance to the shielding measures of nuclear facilities and vigorously carry out the research and development of shielding materials. In radiation rays, due to the strong penetrability and great harm of neutrons, it...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L91/06C08K13/02C08K3/38C08K3/06C08K3/22C08K5/14G21F1/10
CPCC08K2003/2296C08K2003/385C08K2003/387C08L23/16C08L2201/08C08L2205/03G21F1/103C08L91/06C08K13/02C08K3/38C08K3/06C08K3/22C08K5/14
Inventor 陈东风孙凯孙立梅韩松柏贺林峰李玉庆李正耀武梅梅
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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