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Polyolefin composite modified shielding material for neutron shielding device

A shielding device and composite modification technology are applied in the field of polyolefin composite modified shielding materials for neutron shielding devices, which can solve the problems of low heat resistance temperature range, poor environmental friendliness, etc., and achieve long service cycle, excellent mechanical properties, The effect of high heat-resistant temperature

Pending Publication Date: 2020-12-29
ANHUI YINGLIU JIUYUAN NUCLEAR ENERGY NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the shielding material based on polyethylene alone, the heat-resistant temperature range (80-100°C) is low; at the same time, the lead-boron polyethylene contains lead, which makes the material less environmentally friendly, and it will harm the environment and personnel during use. Negative impact, needs to be improved urgently

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0018] The technical solution adopted in this embodiment is: it consists of the following mass fraction components: 20wt% polypropylene, 39wt% polyethylene, 20wt% cycloolefin copolymer, 20wt% boron carbide, 0.2wt% antioxidant, 0.5% coupling agent wt%, release agent 0.3wt%; each raw material is mixed, hot-pressed, demolded and shaped according to the above-mentioned component distribution ratio.

[0019] Further, the antioxidant is a combination of FB1520, 2002 and PS802FL.

[0020] Further, the coupling agent is a combination of KH902, KH580, and KH560.

[0021] Further, the release agent is a combination of siloxane compound, methyl silicone oil, hydrogen-containing methyl silicone oil, and silicone resin.

Embodiment 3

[0023] The technical solution adopted in this embodiment is: it consists of the following mass fraction components: 30wt% polypropylene, 15wt% cycloolefin copolymer, 24wt% carborane, 0.2wt% antioxidant, 0.5wt% coupling agent, Molding agent 0.3wt%; each raw material is mixed, hot-pressed, demoulded, and shaped according to the above-mentioned component distribution ratio.

[0024] Further, the antioxidant is a combination of Irganox1010, FB1520, 2002, PS802FL and Irgafos168.

[0025] Further, the coupling agent is KH560.

[0026] Further, the release agent is a combination of silicone compound and hydrogen-containing methyl silicone oil.

Embodiment 4

[0028] The technical scheme adopted in this embodiment is: it consists of the following mass fraction components: 50wt% polypropylene, 24wt% cycloolefin copolymer, 25wt% carborane, 0.2wt% antioxidant, 0.5wt% coupling agent, Molding agent 0.3wt%; each raw material is mixed, hot-pressed, demoulded, and shaped according to the above-mentioned component distribution ratio.

[0029] Further, the antioxidant is Irgafos 168.

[0030] Further, the coupling agent is KH602.

[0031] Further, the release agent is a silicone compound.

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PUM

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Abstract

The invention discloses a polyolefin composite modified shielding material for a neutron shielding device, and relates to the technical field of shielding materials. The shielding material is composedof the following components in percentage by mass: 65-94.5 wt% of polyolefin matrix material, 5-30 wt% of shielding functional agent and 0.5-5 wt% of processing aid, wherein the processing aid comprises an antioxidant, a coupling agent and a release agent, and the mass ratio of the antioxidant to the coupling agent to the release agent is 2:5:3. The preparation method comprises the following steps: mixing the raw materials according to the proportion, carrying out hot press molding, demolding and shaping. The material has the characteristics of excellent neutron shielding performance, high density, high heat-resistant temperature, excellent mechanical property, long service cycle and the like, and completely meets the design and application requirements of a neutron shielding device on the material.

Description

technical field [0001] The invention relates to the technical field of shielding materials, in particular to a polyolefin composite modified shielding material for neutron shielding devices. Background technique [0002] The application of nuclear technology has penetrated into various fields such as military, medicine, industry, etc., and the probability of human beings being exposed to various nuclear radiation has greatly increased. Therefore, in order to ensure the health of the staff and the safe and effective use of nuclear energy, it is necessary to carry out nuclear radiation inspection. Effective shielding protection. [0003] In recent years, shielding materials based on polyethylene have been prepared for neutron radiation shielding research, including boron-containing polyethylene and lead-boron polyethylene shielding materials. However, due to the shielding material based on polyethylene alone, the heat-resistant temperature range (80-100°C) is low; at the same...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/12C08L45/00C08L83/04C08L83/05C08K3/38C08K5/55G21F1/10
CPCC08L23/06C08L23/12G21F1/103C08L2207/068C08L2201/08C08L45/00C08L83/04C08K3/38C08K5/55
Inventor 李玉磊戚进祥匡少宝沈厚平刘小祥
Owner ANHUI YINGLIU JIUYUAN NUCLEAR ENERGY NEW MATERIAL TECH CO LTD
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