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A preparation process of radiochromic film for dose monitoring in radiation processing
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A technology of radiation discoloration and radiation processing, which is applied in the field of preparation technology of radiation discoloration film, can solve the problems of unpublished discoloration film process steps, undisclosed process, etc., and achieve wide coverage dose range, stable optical density and lifespan, and surface smoothness and good light transmittance
Active Publication Date: 2017-09-12
CHINA INSTITUTE OF ATOMIC ENERGY
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[0003] Among various radiochromic film dosimeters, the FWT-60 film dose meter produced by the American Far West Technology Co. The dosimetry performance of the meter is better, and it has become the best-selling product of Far West Company all over the world, but the preparation process and formula of this product are kept secret.
Li Huazhi and others from the China Institute of Atomic Energy disclosed a radiochromic film dosimeter with nylon as the base material and HPR-CN as the dye in the open document "Development of Radiation-Changing Film Dosimeter", but they did not disclose the specific details. craft
At the same time, Li Huazhi and others of the China Institute of Atomic Energy disclosed that imported and domestic hexahydroxyethyl parafuran red cyanide dyes (HPR-CN) and Paramagentin cyanide dye (PR-CN) uses nylon as the base material to make the formulation research of radiochromic film dosimeter, but this document focuses on the performance of four kinds of dye films. The detailed test and comparison have not been disclosed. Process steps for the preparation of these several color-changing films
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Embodiment 1
[0033] A preparation process for a radiochromic film for dose monitoring in radiation processing, comprising the following steps:
[0037] Use 0.2 parts of parafuchsin cyanide as the dye of the radiochromic film, and use 13 parts of analytical pure methoxyethanol to dissolve the parafuchsin cyanide at room temperature and filter after dissolving; Cyanide was passed through a filter funnel and filtered with suction.
[0038] (3) mixing and stirring
[0039] Mix the solution obtained in step (1) and step (2), and add 0.5 parts of citric acid crystals and 2 parts of anhydrousacetic acid therein and mix and stir for 6 hours to make the mixed solution uniform;
[0040] (4) Spread film
[0041] Apply the solution obtained in step (3) evenly on the optical glass film-making ...
Embodiment 2
[0048] The same method and steps as in Example 1, except that the mass parts of nylon, dehydrated alcohol, parafuchsin cyanide, methoxyethanol, citric acid crystals, and anhydrousacetic acid are 10 parts, 120 parts, 0.5 parts respectively Servings, 30 servings, 3 servings, 5 servings.
[0049] The radiochromic film prepared by the process provided in Example 2 has a uniform thickness, a measurement repeatability of better than 1%, and a wide dose coverage range of 0.05 kGy to 50 kGy.
Embodiment 3
[0051] The same method and steps as in Example 1, except that the mass parts of nylon, dehydrated alcohol, parafuchsin cyanide, methoxyethanol, citric acid crystals, and anhydrous acetic acid are 10 parts, 150 parts, 0.8 parts respectively Servings, 50 servings, 5 servings, 8 servings.
[0052] The radiochromic film prepared by the process provided in Example 3 has a uniform thickness, a measurement repeatability of better than 1%, and a wide dose coverage range of 0.05 kGy to 40 kGy.
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Abstract
The invention belongs to the technical field of dose monitoring, and discloses a preparation process of a radiochromic film used for dose monitoring in radiationprocessing. The steps are: (1) dissolving nylon with absolute ethanol; (2) dissolving parafurnacein cyanide with methoxyethanol and filtering after dissolving; (3) mixing the dissolving solutions of the above two steps, and Add citric acid crystals and anhydrousacetic acid and stir evenly; (4) uniformly coat the solution obtained in step (3) on the film-making flat plate that has been adjusted in level; (5) apply the film-making flat plate described in step (4) Add a sealing cover to make the film solidify; after curing, open the sealing cover until the film is dry; (6) remove the film after drying in step (5) to obtain the required radiochromic film; the film covers a wide dose range, The film has good uniformity in thickness and can be used for dose monitoring during radiationprocessing.
Description
technical field [0001] The invention belongs to the technical field of dose monitoring, and in particular relates to a preparation process of a radiochromic film used for dose monitoring in radiationprocessing. Background technique [0002] Radiochromic film is an organic solid film that can change color after receiving a certain dose of ionizing radiation. Because the radiochromic film has the advantages of wide dose response range, high spatial resolution, mailability and use as a delivery standard, Therefore, it is widely used in the measurement of medium and high doses in radiation processing. [0003] Among various radiochromic film dosimeters, the FWT-60 film dose meter produced by the American Far West Technology Co. The dosimetry performance of the meter is better, and it has become the best-selling product of Far West Company all over the world, but the preparation process and formula of this product are kept secret so far. Li Huazhi and others from the China Ins...
Claims
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Application Information
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