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Radial protection plate and its preparation method

A radiation protection and plate technology, applied in reactors, nuclear engineering, shielding, etc., can solve the problems of complex plate ratio, low toughness, and heavy weight, and achieve the effect of easy-to-obtain raw materials, high toughness, and light weight

Inactive Publication Date: 2009-08-26
张兴茂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of board has complex ratio, high cost, heavy weight, and the specific gravity is 3.4g / cm 3 Above, the lead equivalent is below 1.3mm Pb, the toughness is small, and it is easy to cause fracture during transportation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Weigh 2.7Kg of magnesium oxide, 5.4Kg of magnesium chloride aqueous solution with a weight concentration of 15-30% and 15.3Kg of barium ore according to the weight ratio of 1.5:3:8.5, and the content of barium salt in the barium ore is 60%-70%. Take by weighing 0.324Kg of urine-formaldehyde resin glue by 6% of magnesium chloride aqueous solution weight, take by weighing 0.000648Kg of urine-formaldehyde resin glue curing agent by 2‰ of urine-formaldehyde resin glue weight. Crush the barium ore sand to more than 80 mesh. Then the above-mentioned materials were mixed and stirred evenly to obtain 23.72465Kg of viscous matter. Use a glass plate with an area of ​​1 square meter as a template, and evenly spread the viscous material on the entire glass plate in layers, and lay a layer of non-alkali and wax-free glass mesh cloth with a thickness of 2mm per spread. After the coating is finished, vibrate the glass plate to make the coating smooth and dense. Moisturize at 30°C fo...

Embodiment 2

[0016] According to the weight ratio of 2:3:9, weigh 4Kg of magnesium oxide, 6Kg of magnesium chloride aqueous solution with a weight concentration of 15-30%, and a mixture of barium ore and lead ore (the weight ratio of the two is 1:1) 18Kg, barium ore The barium salt content in the medium is 60%-70%, and the lead compound content in the lead ore is 50%-60%. Take by weighing 0.48Kg of urine-formaldehyde resin glue by 8% of the weight of the magnesium chloride aqueous solution, and take by weighing 0.00096Kg of urine-formaldehyde resin glue curing agent by 2‰ of the weight of urine-formaldehyde resin glue. Crush the barium ore and lead ore to more than 100 mesh. Then the above-mentioned materials were mixed and stirred evenly to obtain 28.48096Kg of viscous matter. Use a bamboo plywood with an area of ​​1 square meter as a template, spread the viscous evenly on the whole piece of bamboo plywood, and lay a layer of alkali-free and wax-free glass mesh cloth on each spread with ...

Embodiment 3

[0019] According to the weight ratio of 2.5:3.5:9.5, weigh 19Kg of the mixture of 5Kg of magnesium oxide, 7Kg of magnesium chloride aqueous solution with a weight concentration of 15-30%, barium ore and lead ore (the weight ratio of the two is 1:4), barium ore The barium salt content in the medium is 60%-70%, and the lead compound content in the lead ore is 50%-60%. Take by weighing 0.63Kg of urine-formaldehyde resin glue by 9% of magnesium chloride aqueous solution weight, take by weighing 0.00126Kg of urine-formaldehyde resin glue curing agent by 2‰ of urine-formaldehyde resin glue weight. Crush the barium ore and lead ore to more than 100 mesh. Then the above-mentioned substances were mixed and stirred evenly to obtain 31.63126Kg of semi-fluid. Use a steel plate with an area of ​​1 square meter as a template, spread the viscous material evenly on the entire steel plate, and lay a layer of non-alkali and wax-free glass mesh cloth with a thickness of 2mm per spread. After t...

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Abstract

The invention provides a radiation protection plate and a preparation method thereof. The radiation protection plate includes magnesium oxide, magnesium chloride aqueous solution, ore sand, urea-formaldehyde resin glue and urea-formaldehyde resin glue curing agent. The ore sand is a mixture of barium ore sand or barium ore sand and lead ore sand. The weight ratio is 1.5-2.5:2.5-3.5:8-10, the weight of the urea-formaldehyde resin is 5%-10% of the weight of the magnesium chloride aqueous solution, and the weight of the urea-formaldehyde resin curing agent is 2‰ of the weight of the urea-formaldehyde resin. Mix the materials, stir evenly, spread layer by layer on the formwork, and lay 2-5 layers of glass mesh at intervals, vibrate the formwork until the coating is flat and free of bubbles, and cure at 10-40°C for 48-120 hours to release the mold forming. The invention has simple formula, easy-to-obtain raw materials and low cost. The resulting plate is light in weight, high in strength, high in toughness, good in absorbing radiation, avoiding evaporation of lead molecules, and long in service life.

Description

technical field [0001] The invention relates to an XR-ray protection material and a preparation method thereof, belonging to the technical field of radiation protection materials. Background technique [0002] Although the protective plates of xr ray on the market are various, they all use shielding material as the middle layer, and the outer layer is laminated with a resin plate. The shielding material is mainly lead plate, which has a large proportion of lead, unstable geometric dimensions, easy to deform and sag, high cost, and easy to cause lead pollution in the process of production and use. Although fiber materials such as hemp fiber, porcelain fiber or glass fiber are added to the shielding material, these fiber materials have low strength. The resin board is not resistant to aging and is easy to crack, causing the lead molecules to evaporate and shortening the life of the protective board. [0003] The Chinese invention patent with the notification number CN1027017...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21F1/00
Inventor 张兴茂
Owner 张兴茂
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