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Formula for preparing radiochromic film dosimeter
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A radiochromic and dosimeter technology, used in dosimeters, chemical dosimeters, etc., can solve the problems of undisclosed nylon, HPR-CN, and undisclosed color-changing film formulations, and achieve surface flatness, good light transmittance, and coverage. Wide dose range and good light transmittance
Active Publication Date: 2015-07-15
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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Examples
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Embodiment 1
[0017] A formula for preparing radiochromic film dosimeters, the formula includes nylon, absolute ethanol, by-fuchsin cyanide, methoxyethanol, citric acid crystals and anhydrousacetic acid, wherein nylon, absolute ethanol, by-product The mass parts of red 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 substrate, anhydrous Ethanol is the solvent for dissolving the substrate; paramagentin cyanide is the dye, and methoxyethanol is the solvent for paramagentin cyanide; citric acid crystals and anhydrous acetic acid are additives to increase the stability of the radiochromic film dosimeter . The methoxyethanol is analytically pure.
[0018] The steps for preparing the radiochromic film dosimeter according to the formula are:
[0020] Take 10 parts of nylon material as the substrate, and dissolve the nylon...
Embodiment 2
[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 using the formula 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 using the formula 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 comprises components in parts by mass as follows: 10 parts of nylon, 60-150 parts of absolute ethyl alcohol, 0.05-0.8 parts of PR-CN (pararosaniline cyanide), 10-50 parts of methoxyethanol, 0.5-5 parts of citric acid crystals and 0.5-8 parts of anhydrousacetic acid, wherein the nylon is a film-forming base material, and the absolute ethyl alcohol is a solvent for dissolving the base material; the PR-CN is dye, and the methoxyethanol is a solvent for the PR-CN; the citric acid crystals and the anhydrousacetic acid are additives, so that the stability of the radiochromic film dosimeter is improved. The radiochromic film dosimeter prepared with the formula has the advantages of wide dose coverage range, good film thickness uniformity and capability of being applied to dose monitoring during radiationprocessing.
Description
technical field [0001] The invention belongs to the technical field of dose monitoring, and in particular relates to a formula 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 disclosed a radi...
Claims
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Application Information
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