Sulfuration material for radiation pipeline shielding sleeve lead core

A technology of shielding sleeve and lead core, which is applied in the field of anti-nuclear radiation, can solve the problems of bulky products, poor effect, and low sealing performance, and achieve the effect of improving stability

Active Publication Date: 2012-07-25
扬州锦沃科技有限公司
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

If a solid overall lead block is used to make the anti-nuclear radiation sheath for pipelines, the product is bulky, the production cost is high, the compliance with the pipeline is poor, the sealing performance is low, and the effect is poor.
[0006] The inventor proposed the idea of ​​wrapping the rubber layer in the lead fiber silk, but because the lead fiber silk has a considerable quality, its loose state tends to accumulate downward under the gravitational force of the center of the earth, so that the lead in the rubber layer is arranged unevenly , will directly lead to nuclear leakage

Method used

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  • Sulfuration material for radiation pipeline shielding sleeve lead core

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Embodiment Construction

[0011] 1. Mix natural rubber, styrene-butadiene rubber, zinc oxide, stearic acid, anti-aging agent, coumarone resin, clay, reinforcing agent, lead oxide, naphthenic oil, accelerator and sulfur at 500︰500︰50~70 ︰15~25︰40~50︰100︰300︰500︰300︰250︰50︰55︰30 are mixed in a mass ratio and melted to form a liquid vulcanized material for use.

[0012] 2. Lay lead fiber wires with a diameter of 0.4 to 1 mm in the ring-shaped wooden mold, and press the molds together to form a lead fiber wire core.

[0013] 3. Spray the liquid vulcanization material of the present invention to the lead fiber wire core, heat and vulcanize with a metal mold to make the lead core.

[0014] 4. Put the lead core and pipe rubber material in a sheath-shaped metal mold, and vulcanize into a sheath at 160-180°C and a pressure of 200kg.

[0015] 5. The comparative parameter table of the made sheath and other products:

[0016]

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Abstract

The invention provides a sulfuration material for a radiation pipeline shielding sleeve lead core, and relates to a nuclear radiation preventing technology, the sulfuration material comprises natural rubber, butylbenzene glue, zinc oxide, stearic acid, an aging preventing agent, coumarone indene resin, potter's clay, a strengthening agent, leadoxide, naphthenic oil, a promoter and sulphur. According to the invention, the sulfuration material formed by mixing enables the loose lead fiber to form a relative fixity through sulfuration, so that the sulfuration material provided in the invention is beneficial to an uniform arrangement of the lead material between the packed rubber layers, and also beneficial to the stability of the final product at the use state, therefore the stability for preventing the nuclear radiation can be improved.

Description

technical field [0001] The invention relates to nuclear radiation protection technology, in particular to the production technical field of joints or sheaths for nuclear radiation radiation pipelines. Background technique [0002] Studies have shown that the external radiation of nuclear power plants is mainly γ-rays, which mainly come from the fission products of nuclear reactions and the pipelines and valves activated by neutrons. Due to the appearance of activated corrosion products in the pipelines, radioactive particles in the pipelines are deposited, making the control area The environmental dose of many maintenance work sites is relatively high, which increases the external exposure dose of the staff. Generally, special pipes with anti-nuclear radiation are used to achieve shielding. [0003] Studies have shown that anti-nuclear radiation biological shielding products must not only have a high shielding effect, but also have good physical and mechanical properties (to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L7/00C08L9/06C08L45/02C08K13/02C08K3/22C08K5/09C08K3/34C08K3/06F16L57/00
Inventor 于徐生叶肇云孙霞
Owner 扬州锦沃科技有限公司
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