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A preparation method for preparing radiochromic film dosimeter
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A radiochromic and dosimeter technology, applied in dosimeters, chemical dosimeters, etc., can solve the problems of no disclosure of color-changing film formula, nylon, HPR-CN, etc., and achieve a wide coverage dose range, surface flatness and transparency. The effect of good luminosity and uniform thickness
Active Publication Date: 2018-03-13
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 public document "Research and Development of Radiation-Changing Film Dosimeter", but they also did not disclose nylon. , HPR-CN content and other specific formulas
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. The formulas prepared by these several color-changing films
Method used
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Embodiment 1
[0017] A preparation method for preparing radiochromic film dosimeters, the preparation method includes nylon, dehydrated alcohol, parafuchsin cyanide, methoxyethanol, citric acid crystals and anhydrous acetic acid, wherein nylon, anhydrous The mass parts of ethanol, parafurnacein cyanide, methoxyethanol, citric acid crystals, and anhydrous acetic acid are respectively 10 parts, 100 parts, 0.2 parts, 13 parts, 0.5 parts, and 2 parts, wherein nylon is the film-forming base material, absolute ethanol is a solvent for dissolving the base material; paramagentin cyanide is a dyestuff, methoxyethanol is a solvent for paramagentin cyanide; citric acid crystals and anhydrous acetic acid are additives to increase the dose of the radiochromic film meter stability. The methoxyethanol is analytically pure.
[0018] The steps of preparing the radiochromic film dosimeter according to the method of preparation are:
[0033] The same method and steps as in Example 1, except that the mass parts of nylon, dehydrated alcohol, parafurnacein cyanide, methoxyethanol, citric acid crystals, and anhydrous acetic acid are 10 parts, 100 parts, and 0.3 parts respectively. Servings, 30 servings, 3 servings, 5 servings.
[0034] The radiochromic film prepared by the preparation method and process provided in Example 2 has uniform thickness, measurement repeatability better than 1%, and dose coverage as wide as 0.05-50 kGy.
Embodiment 3
[0036] 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.
[0037] The radiochromic film prepared by the preparation method and process provided in Example 3 has uniform thickness, measurement repeatability better than 1%, and dose coverage as wide as 0.05-40 kGy.
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Abstract
The invention belongs to the technical field of dose monitoring, and discloses a formula for preparing a radiochromic film dosimeter. The formula includes nylon, absolute ethanol, by-furnacein cyanide, methoxyethanol, citric acid crystals and anhydrousacetic acid, wherein nylon, absolute ethanol, by-furnacein cyanide, methoxyethanol, citric acid crystals, The mass parts of anhydrousacetic acid are 10 parts, 60-150 parts, 0.05-0.8 parts, 10-50 parts, 0.5-5 parts, 0.5-8 parts respectively, wherein nylon is the film-forming substrate and absolute ethanol is the The solvent of the base material; the paramagentin cyanide is the dyestuff, and the methoxyethanol is the solvent of the paramagentin cyanide; the citric acidcrystal and anhydrousacetic acid are additives to increase the stability of the radiochromic film dosimeter. The radiochromic film dosimeter prepared by the formula has the advantages of wide coverage dose range, good film thickness uniformity, 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 method for preparing a radiochromic film dosimeter. 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 radiationprocessing. [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 Institute of Atomic Energy discl...
Claims
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