Irradiation device and synthesis method for preparing hydrogel sheet through cobalt-60 radioactive source

A technology of irradiation device and synthesis method, applied in irradiation device, nuclear engineering and other directions, can solve the problem of uneven thickness of sheets, and achieve the effects of uniform thickness, high production efficiency, and shortened production cycle

Active Publication Date: 2014-03-12
长春吉原生物科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an irradiation device for preparing hydrogel sheets with cobalt-60 radioactive sources, which overcomes the existing methods of pouring hydrogel solutions into plastic trays and irradiating hydrogel sheets. Adhesive sheet, due to the fluidity of the hydrogel raw material solution in this production process, it needs to be placed horizontally during the transfer and irradiation process, and a slight inclination of the tray will easily lead to the defect of uneven thickness of the sheet

Method used

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  • Irradiation device and synthesis method for preparing hydrogel sheet through cobalt-60 radioactive source
  • Irradiation device and synthesis method for preparing hydrogel sheet through cobalt-60 radioactive source
  • Irradiation device and synthesis method for preparing hydrogel sheet through cobalt-60 radioactive source

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Effect test

Embodiment 1

[0036]Put agar, polyvinyl alcohol, polyethylene glycol and water in a mass ratio of 2:6:4:88 into a reaction device that can be heated and stirred, heat up and stir to prepare a hydrogel raw material solution, and wait for vacuum defoaming use. Prepare a hydrogel-formed scaffold with a gap of 3mm (that is, a gasket thickness of 3mm), made of a PET plate with a thickness of 3mm, and put it into the container with the hydrogel sheet vertical to the horizontal plane. After filling the hydrogel raw material solution into the container, the container is sealed. A 30kGy irradiation dose is irradiated to the container containing the gel raw material solution and the gel forming bracket, so that the hydrogel raw material solution is cross-linked to form a gel. The hydrogel-formed scaffold is decomposed to obtain a hydrogel sheet. The thickness deviation range of the obtained hydrogel sheet (difference between the thickest part and the thinnest part) is 0-0.25mm, and the edges of the...

Embodiment 2

[0038] Put polyglutamic acid and water in a mass ratio of 10:90 into a reaction device that can be heated and stirred, heat up and stir and mix to prepare a hydrogel raw material liquid, and vacuum defoam it for use. Prepare a hydrogel roll forming bracket with a gap of 50mm, made of a PET sheet with a thickness of 1mm, and put it into the container in the direction of the hydrogel sheet perpendicular to the horizontal plane. After filling the hydrogel raw material solution into the container, the container is sealed. The container containing the gel raw material solution and the gel forming bracket is irradiated with an irradiation dose of 80kGy, so that the hydrogel raw material solution is cross-linked to form a gel. The hydrogel-formed scaffold is decomposed to obtain a hydrogel sheet. The thickness deviation range of the obtained hydrogel sheet (the difference between the thickest part and the thinnest part) is 0-0.28mm, and the edges of the gel are neat; in the case of ...

Embodiment 3

[0040] Put PVA and water in a mass ratio of 5:95 into a reaction device that can be heated and stirred, heat up and stir to prepare a hydrogel raw material solution, and vacuum defoam it for use. Prepare a hydrogel sheet molding bracket with a gap of 10mm, made of acrylic plate with a thickness of 3mm, and put it into the container in the direction of the vertical and horizontal plane of the hydrogel sheet. After filling the hydrogel raw material solution into the container, the container is sealed. The container containing the gel raw material solution and the gel forming bracket is irradiated with an irradiation dose of 100 kGy, so that the hydrogel raw material solution is cross-linked to form a gel. The hydrogel-formed scaffold is decomposed to obtain a hydrogel sheet. The thickness deviation range of the obtained hydrogel sheet (difference between the thickest part and the thinnest part) is 0-0.5mm, and the edges of the gel are neat; in the case of the same raw material ...

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Abstract

The invention relates to an irradiation device and a synthesis method for preparing a hydrogel sheet through a cobalt-60 radioactive source. The irradiation device comprises a container and a hydrogel molding bracket, wherein the hydrogel molding bracket consists of more than two separation plates and a gasket which is used for regulating the distance between the separation plates, is fixed through an elastic fixing band, and is detachably arranged in the container; each gasket is fixed to one of four corners on one side of the corresponding separation plate; the shape of the hydrogel molding bracket is matched with that of an inner cavity of the container. The hydrogel molding bracket which is fixed through the fixing band is arranged in the inner cavity of the container, the shape of the hydrogel molding bracket is matched with that of the inner cavity of the container, the container is filled with material liquid and is sealed, the cobalt-60 radioactive source radiates, and the bracket is disassembled, so that the hydrogel sheet can be obtained. The irradiation device which is used for producing the hydrogel sheet is low in production condition requirement, simple in operation step, low in operation difficulty and high in production efficiency; the hydrogel sheets are uniform in thickness and high in qualified rate.

Description

technical field [0001] The invention relates to an irradiation device and a synthesis method for preparing a hydrogel sheet with a cobalt-60 radioactive source, belonging to the field of hydrogel sheet preparation. Background technique [0002] Hydrogel is a kind of polymer compound with a three-dimensional space network structure, which can swell, absorb and release water in large quantities while maintaining the original structural shape. Because of its good water retention performance and adjustable mechanical properties, it is widely used in Industry, agriculture, construction, medical care industry and other fields. The synthesis process of hydrogel includes physical synthesis and chemical synthesis. Due to the poor stability of physically synthesized hydrogels, they cannot maintain their shape in a high-temperature environment, thus limiting their application range. Chemical cross-linking is divided into cross-linking by adding initiators and cross-linking by high-en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21K5/00G21K5/08
Inventor 于春暖荆晶周德根王靖哲陈亮周志
Owner 长春吉原生物科技有限公司
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