CN115975310B - Flexible protective material and preparation method and application thereof - Google Patents
Flexible protective material and preparation method and application thereof Download PDFInfo
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- CN115975310B CN115975310B CN202310073526.1A CN202310073526A CN115975310B CN 115975310 B CN115975310 B CN 115975310B CN 202310073526 A CN202310073526 A CN 202310073526A CN 115975310 B CN115975310 B CN 115975310B
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- 239000000463 material Substances 0.000 title claims abstract description 78
- 230000001681 protective effect Effects 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 239000000843 powder Substances 0.000 claims abstract description 54
- 239000011347 resin Substances 0.000 claims abstract description 25
- 229920005989 resin Polymers 0.000 claims abstract description 25
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052797 bismuth Inorganic materials 0.000 claims abstract description 21
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 20
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 claims abstract description 19
- NEHDRDVHPTWWFG-UHFFFAOYSA-N Dioctyl hexanedioate Chemical compound CCCCCCCCOC(=O)CCCCC(=O)OCCCCCCCC NEHDRDVHPTWWFG-UHFFFAOYSA-N 0.000 claims abstract description 19
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910000416 bismuth oxide Inorganic materials 0.000 claims abstract description 18
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 18
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 15
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 15
- 239000012760 heat stabilizer Substances 0.000 claims abstract description 10
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims description 44
- 239000000203 mixture Substances 0.000 claims description 32
- 238000002844 melting Methods 0.000 claims description 16
- 230000008018 melting Effects 0.000 claims description 16
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 14
- 239000004800 polyvinyl chloride Substances 0.000 claims description 14
- 238000005303 weighing Methods 0.000 claims description 14
- IHBCFWWEZXPPLG-UHFFFAOYSA-N [Ca].[Zn] Chemical group [Ca].[Zn] IHBCFWWEZXPPLG-UHFFFAOYSA-N 0.000 claims description 13
- 239000006084 composite stabilizer Substances 0.000 claims description 13
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 150000003839 salts Chemical class 0.000 claims description 4
- 239000003381 stabilizer Substances 0.000 claims description 4
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims description 3
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 3
- 230000002745 absorbent Effects 0.000 claims description 2
- 239000002250 absorbent Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 230000005855 radiation Effects 0.000 abstract description 9
- 230000005461 Bremsstrahlung Effects 0.000 abstract description 5
- 239000000945 filler Substances 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 13
- 238000003723 Smelting Methods 0.000 description 12
- 239000000654 additive Substances 0.000 description 12
- 239000011344 liquid material Substances 0.000 description 12
- 238000001816 cooling Methods 0.000 description 9
- 229920000642 polymer Polymers 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 239000003814 drug Substances 0.000 description 5
- 230000000996 additive effect Effects 0.000 description 4
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 239000010937 tungsten Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- OAICVXFJPJFONN-OUBTZVSYSA-N Phosphorus-32 Chemical compound [32P] OAICVXFJPJFONN-OUBTZVSYSA-N 0.000 description 1
- 238000013473 artificial intelligence Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229940097886 phosphorus 32 Drugs 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Manufacture Of Macromolecular Shaped Articles (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention is applicable to the technical field of radiation protection, and provides a flexible protective material which comprises the following raw materials in parts by weight: 45-55 parts of resin powder, 310-330 parts of tungsten powder, 178-198 parts of bismuth powder, 95-105 parts of bismuth oxide, 33-39 parts of dioctyl phthalate, 8-10 parts of di-n-octyl adipate, 2.2-2.6 parts of heat stabilizer, 0.2-0.4 part of ultraviolet absorber, 0.22-0.26 part of antioxidant and 1.4-1.6 parts of opening agent. The invention also provides a preparation method of the flexible protective material. The invention also provides application of the flexible protective material in preparation of isotope application. According to the invention, the tungsten powder, the bismuth powder and the bismuth oxide are added as the filler, so that the beta rays can be blocked, the influence of bremsstrahlung is reduced, the protection effect is good, the weight and the cost of the material are reduced, and the environment-friendly and high-safety performance are realized.
Description
Technical Field
The invention belongs to the technical field of radiation protection, and particularly relates to a flexible protection material and a preparation method and application thereof.
Background
P-32 (phosphorus-32) application treatment is taken as a classical nuclide treatment project, has the advantages of definite curative effect, less side effect and the like, but is limited by technological conditions, and the P-32 application treatment is prepared by adopting a manual mode all the time, so that the treatment precision is poor, the treatment efficiency is low, the dosage calculation error is large and the like, and the potential of the treatment project is not fully exerted. To solve the problems, artificial intelligence auxiliary technology is adopted to improve the P-32 application treatment process.
When in clinical transformation and use, proper protective materials are required to be used for wrapping the P-32 medicament, no better related materials are available in the current market, the clinician has insufficient knowledge degree in terms of protection and the limitation of technical conditions, the current P-32 medicament protective raw materials are in rough and blank states, the existing materials with good partial protective effects have poor plasticity, the medicament cannot be well wrapped, and the scar part cannot be effectively covered when in use, so that the protective effect of the materials which are convenient for wrapping operation is not ideal.
Disclosure of Invention
An objective of the embodiments of the present invention is to provide a flexible protective material, which aims to solve the problems set forth in the background art.
The embodiment of the invention is realized in such a way that the flexible protective material comprises the following raw materials in parts by weight:
45-55 parts of resin powder, 310-330 parts of tungsten powder, 178-198 parts of bismuth powder, 95-105 parts of bismuth oxide, 33-39 parts of dioctyl phthalate, 8-10 parts of di-n-octyl adipate, 2.2-2.6 parts of heat stabilizer, 0.2-0.4 part of ultraviolet absorber, 0.22-0.26 part of antioxidant and 1.4-1.6 parts of opening agent.
Preferably, the resin powder is a three-type polyvinyl chloride resin powder.
Preferably, the heat stabilizer is a calcium-zinc composite stabilizer or a lead salt stabilizer.
Preferably, the ultraviolet absorber is one or more of UV531, UV284, UV 49.
Preferably, the antioxidant is one or more of antioxidant 1010, antioxidant 168 and antioxidant 264.
Another object of the embodiment of the present invention is to provide a method for preparing a flexible protective material, including the following steps:
Weighing the resin powder, tungsten powder, bismuth oxide, dioctyl phthalate, di-n-octyl adipate, a heat stabilizer, an ultraviolet absorbent, an antioxidant and an opening agent according to the weight parts, and mixing the raw materials at a high speed to obtain a mixture;
and (3) carrying out open mill hot melting treatment on the mixture to prepare a sheet, wherein the sheet is the flexible protective material.
Preferably, the thickness of the sheet is 0.9-1.1mm.
Preferably, in the step of mixing the raw materials at a high speed to obtain the mixture, the high-speed mixing time is 7-9min, and the rotating speed is 230-270r/min.
Preferably, in the step of carrying out open mill hot melting treatment on the mixture, the temperature of the open mill hot melting is 170-190 ℃ and the rotating speed is 920-1000r/min.
It is a further object of an embodiment of the present invention to provide for the use of a flexible protective material for the preparation of isotope applications.
According to the flexible protective material provided by the embodiment of the invention, the flexibility of the material is realized by adding the resin powder, the dioctyl phthalate and the di-n-octyl adipate; meanwhile, tungsten powder, bismuth powder and bismuth oxide are creatively added as fillers, wherein tungsten has large atomic number, large atomic nucleus mass and more out-of-nucleus electrons, when high-energy beta rays are easy to collide with the high-energy beta rays in an inelastic way (ionization and excitation), elastically scatter and bremsstrahlung, the effect of blocking the beta rays is achieved, the effect of bremsstrahlung is reduced by matching oxides of bismuth and bismuth in consideration of the effect of the bremsstrahlung, secondly, the quality and the cost of a product are overlarge due to the fact that the pure use of tungsten can be too high, the weight and the cost of materials can be reduced while the protective performance is achieved by matching the oxides of bismuth and bismuth, and tungsten and bismuth are all elements with stable chemical properties and low toxicity, so that the prepared sheet is environment-friendly and higher in safety.
Drawings
Fig. 1 is a schematic diagram of a sample of a flexible protective material according to an embodiment of the present invention (wherein the thickness c is the sheet prepared in embodiment 1).
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
A flexible protective material is prepared by the following steps:
(1) Weighing resin powder, tungsten powder, bismuth oxide, dioctyl phthalate, di-n-octyl adipate, a heat stabilizer, an ultraviolet absorber, an antioxidant and an opening agent, and mixing the raw materials at a high speed by adopting a 10L cylindrical electric mixer with a poly-rich tablet to prepare a mixture, wherein the mixing speed is 230-270r/min, the mixing time is 7-9min, the rotating speed is not too high, the light powder is not raised, the mixing is uneven, and the mixing is carried out according to the sequence of a main material, an auxiliary material and an additive, and the sequence of the powder material and a liquid material;
(2) Carrying out open smelting hot melting treatment on the mixture on a Tianhui brand TH60086 inch open mill at 170-190 ℃, wherein the rotating speed is 920-1000r/min, adjusting the distance between roller shafts to adjust the thickness, controlling the thickness of the prepared sheet to be 0.9-1.1mm, taking down the sheet, and cooling to obtain the flexible protective material;
Wherein, 45-55 parts of resin powder, 310-330 parts of tungsten powder, 178-198 parts of bismuth powder, 95-105 parts of bismuth oxide, 33-39 parts of dioctyl phthalate, 8-10 parts of di-n-octyl adipate, 2.2-2.6 parts of heat stabilizer, 0.2-0.4 part of ultraviolet absorber, 0.22-0.26 part of antioxidant and 1.4-1.6 parts of opening agent;
The resin powder is three-type polyvinyl chloride resin powder, the heat stabilizer is a calcium-zinc composite stabilizer or a lead salt stabilizer, the ultraviolet absorber is one or more of UV531, UV284 and UV49, and the antioxidant is one or more of antioxidant 1010, antioxidant 168 and antioxidant 264;
the flexible protective material prepared by the method can be used for preparing isotope application, in particular to wrapping P-32 medicament and preparing P-32 application.
Specific implementations of the invention are described in detail below in connection with specific embodiments.
Example 1
A flexible protective material is prepared by the following steps:
(1) Weighing 50g of three-type polyvinyl chloride resin powder, 320g of tungsten powder, 188g of bismuth powder, 100g of bismuth oxide, 36g of dioctyl phthalate, 9g of di-n-octyl adipate, 2.4g of calcium-zinc composite stabilizer, 0.3g of UV531, 0.24g of antioxidant 1010 and 1.5g of opening agent by adopting a balance (600 g/0.01g of Xingzhi), adding the raw materials into a 10L cylindrical electric mixer of a polymer tablet according to the sequence of main materials, auxiliary materials, additives and powder materials and liquid materials, and mixing at a high speed to obtain a mixture, wherein the mixing speed is 250r/min and the mixing time is 8min;
(2) And (3) carrying out open smelting hot melting treatment on the mixture on a Tianhui brand TH6008 6 inch open mill at 180 ℃, wherein the rotating speed is 960r/min, adjusting the distance between roller shafts to adjust the thickness, so that the thickness of the prepared sheet is 1.0mm, and taking down and cooling the sheet.
Example 2
A flexible protective material is prepared by the following steps:
(1) Weighing 45g of three-type polyvinyl chloride resin powder, 310g of tungsten powder, 178g of bismuth powder, 95g of bismuth oxide, 33g of dioctyl phthalate, 8g of di-n-octyl adipate, 2.2g of calcium-zinc composite stabilizer, 0.2g of UV531, 0.22g of antioxidant 1010 and 1.4g of opening agent by adopting a balance (600 g/0.01g of Xingzhi), adding the raw materials into a 10L cylindrical electric mixer of a polymer tablet according to the sequence of main materials, auxiliary materials, additives and powder materials and liquid materials, and mixing at a high speed to obtain a mixture, wherein the mixing speed is 250r/min and the mixing time is 8min;
(2) And (3) carrying out open smelting hot melting treatment on the mixture on a Tianhui brand TH6008 6 inch open mill at 180 ℃, wherein the rotating speed is 960r/min, adjusting the distance between roller shafts to adjust the thickness, enabling the thickness of the prepared sheet to be 0.9mm, and taking down and cooling the sheet.
Example 3
A flexible protective material is prepared by the following steps:
(1) Weighing 55g of three-type polyvinyl chloride resin powder, 330g of tungsten powder, 198g of bismuth powder, 105g of bismuth oxide, 39g of dioctyl phthalate, 10g of di-n-octyl adipate, 2.6g of calcium-zinc composite stabilizer, 0.4g of UV531, 0.26g of antioxidant 1010 and 1.6g of opening agent by adopting a balance (600 g/0.01g of Xingzhi), adding the raw materials into a 10L cylindrical electric mixer of a polymer tablet according to the sequence of main materials, auxiliary materials, additives and powder materials and liquid materials, and mixing at a high speed to obtain a mixture, wherein the mixing speed is 250r/min and the mixing time is 8min;
(2) And (3) carrying out open smelting hot melting treatment on the mixture on a Tianhui brand TH6008 6 inch open mill at 180 ℃, wherein the rotating speed is 960r/min, adjusting the distance between roller shafts to adjust the thickness, so that the thickness of the prepared sheet is 1.1mm, and taking down and cooling the sheet.
Example 4
A flexible protective material is prepared by the following steps:
(1) Weighing 50g of three-type polyvinyl chloride resin powder, 320g of tungsten powder, 188g of bismuth powder, 100g of bismuth oxide, 36g of dioctyl phthalate, 9g of di-n-octyl adipate, 2.4g of lead salt stabilizer, 0.3g of UV284, 0.24g of antioxidant and 1.5g of opening agent by adopting a balance (600 g/0.01g of Xingzhi), adding the raw materials into a 10L cylindrical electric mixer of a polymer tablet according to the sequence of main materials, auxiliary materials, additives and powder materials and liquid materials, and mixing at a high speed to obtain a mixture, wherein the mixing speed is 230r/min and the mixing time is 9min;
(2) And (3) carrying out open smelting hot melting treatment on the mixture on a Tianhui brand TH6008 6 inch open mill at 170 ℃, wherein the rotating speed is 1000r/min, adjusting the distance between roller shafts to adjust the thickness, so that the thickness of the prepared sheet is 1.0mm, and taking down and cooling the sheet.
Example 5
A flexible protective material is prepared by the following steps:
(1) Weighing 50g of three-type polyvinyl chloride resin powder, 320g of tungsten powder, 188g of bismuth powder, 100g of bismuth oxide, 36g of dioctyl phthalate, 9g of di-n-octyl adipate, 2.4g of calcium-zinc composite stabilizer, 0.3g of UV49, 0.24g of antioxidant and 1.5g of opening agent by adopting a balance (600 g/0.01g of Xingzhi), adding the raw materials into a 10L cylindrical electric mixer of a polymer tablet according to the sequence of main materials, auxiliary materials and additives, and the sequence of powder and liquid materials, and mixing at a high speed to obtain a mixture, wherein the mixing speed is 270r/min and the mixing time is 7min;
(2) And (3) carrying out open smelting hot melting treatment on the mixture on a Tianhui brand TH6008 6 inch open mill at 190 ℃, wherein the rotating speed is 920r/min, adjusting the distance between roller shafts to adjust the thickness, so that the thickness of the prepared sheet is 1.0mm, and taking down and cooling the sheet.
Comparative example 1
A flexible protective material is prepared by the following steps:
(1) Weighing 25g of three-type polyvinyl chloride resin powder, 120g of tungsten powder, 100g of bismuth oxide, 20g of dioctyl phthalate, 5g of di-n-octyl adipate, 1.2g of calcium-zinc composite stabilizer, 0.15g of UV531, 1010.12 g of antioxidant and 1g of opening agent by adopting a balance (600 g/0.01g of Xingzhi), adding the raw materials into a 10L cylindrical electric mixer of a polymeric master plate according to the sequence of a main material, auxiliary materials and an additive, and the sequence of a powder material and a liquid material, and mixing at a high speed to obtain a mixture, wherein the mixing speed is 250r/min and the mixing time is 8min;
(2) And (3) carrying out open smelting hot melting treatment on the mixture on a Tianhui brand TH6008 6 inch open mill at 180 ℃, wherein the rotating speed is 960r/min, adjusting the distance between roller shafts to adjust the thickness so that the thickness of the prepared sheet is 0.5mm, taking down the sheet, cooling and marking the sheet as a sheet A.
Comparative example 2
A flexible protective material is prepared by the following steps:
(1) Weighing 25g of three-type polyvinyl chloride resin powder, 100g of tungsten powder, 288g of bismuth powder, 22g of dioctyl phthalate, 6g of di-n-octyl adipate, 1.2g of calcium-zinc composite stabilizer, 0.15g of UV531, 1010.12 g of antioxidant and 0.5g of opening agent by adopting a balance (600 g/0.01g of Xingzhi), adding the raw materials into a 10L cylindrical electric mixer of a polymeric master plate according to the sequence of a main material, auxiliary materials and an additive, and the sequence of a powder material and a liquid material, and mixing at a high speed to obtain a mixture, wherein the mixing speed is 250r/min and the mixing time is 8min;
(2) And (3) carrying out open smelting hot melting treatment on the mixture on a Tianhui brand TH6008 6 inch open mill at 180 ℃, wherein the rotating speed is 960r/min, adjusting the distance between roller shafts to adjust the thickness so that the thickness of the prepared sheet is 0.5mm, taking down the sheet, cooling and marking as a sheet B.
Comparative example 3
A flexible protective material is prepared by the following steps:
(1) Weighing 25g of three-type polyvinyl chloride resin powder, 200g of tungsten powder, 188g of bismuth powder, 20g of dioctyl phthalate, 5g of di-n-octyl adipate, 1.2g of calcium-zinc composite stabilizer, 0.15g of UV531, 1010.12 g of antioxidant and 0.5g of opening agent by adopting a balance (600 g/0.01g of Xingzhi), adding the raw materials into a 10L cylindrical electric mixer of a polymeric master plate according to the sequence of a main material, auxiliary materials and an additive, and the sequence of a powder material and a liquid material, and mixing at a high speed to obtain a mixture, wherein the mixing speed is 250r/min and the mixing time is 8min;
(2) And (3) carrying out open smelting hot melting treatment on the mixture on a Tianhui brand TH6008 6 inch open mill at 180 ℃, wherein the rotating speed is 960r/min, adjusting the distance between roller shafts to adjust the thickness so that the thickness of the prepared sheet is 0.5mm, taking down the sheet, cooling and marking as a sheet C.
Comparative example 4
A flexible protective material is prepared by the following steps:
(1) Weighing 50g of three-type polyvinyl chloride resin powder, 114g of tungsten powder, 288g of bismuth powder, 100g of bismuth oxide, 43g of dioctyl phthalate, 10g of di-n-octyl adipate, 2.4g of calcium-zinc composite stabilizer, 0.3g of UV531, 0.24g of antioxidant 1010 and 1.5g of opening agent by adopting a balance (600 g/0.01g of Xingzhi), adding the raw materials into a 10L cylindrical electric mixer of a polymer tablet according to the sequence of main materials, auxiliary materials, additives and powder materials and liquid materials, and mixing at a high speed to obtain a mixture, wherein the mixing speed is 250r/min and the mixing time is 8min;
(2) The mixture is subjected to open smelting hot melting treatment at 180 ℃ on an open mill with the temperature of Tianhui brand TH6008, wherein the rotating speed is 960r/min, the distance between roller shafts is adjusted to adjust the thickness, sheets with the thickness of 0.6mm, 0.77mm and 0.99mm are respectively prepared, and the sheets are taken down, cooled and marked as sheet a.
Comparative example 5
A flexible protective material is prepared by the following steps:
(1) Weighing 50g of three-type polyvinyl chloride resin powder, 220g of tungsten powder, 288g of bismuth powder, 100g of bismuth oxide, 43g of dioctyl phthalate, 10g of di-n-octyl adipate, 2.4g of calcium-zinc composite stabilizer, 0.3g of UV531, 0.24g of antioxidant 1010 and 1.5g of opening agent by adopting a balance (600 g/0.01g of Xingzhi), adding the raw materials into a 10L cylindrical electric mixer of a polymer tablet according to the sequence of main materials, auxiliary materials, additives and powder materials and liquid materials, and mixing at a high speed to obtain a mixture, wherein the mixing speed is 250r/min and the mixing time is 8min;
(2) The mixture is subjected to open smelting hot melting treatment at 180 ℃ on an open mill with the size of Tianhui brand TH6008, wherein the rotating speed is 960r/min, the distance between roller shafts is adjusted to adjust the thickness, sheets with the thickness of 0.6mm, 0.77mm and 0.98mm are respectively prepared, and the sheets are taken down, cooled and marked as sheet b.
Comparative example 6
A flexible protective material is prepared by the following steps:
(1) Weighing 50g of three-type polyvinyl chloride resin powder, 320g of tungsten powder, 188g of bismuth powder, 100g of bismuth oxide, 36g of dioctyl phthalate, 9g of di-n-octyl adipate, 2.4g of calcium-zinc composite stabilizer, 0.3g of UV531, 0.24g of antioxidant 1010 and 1.5g of opening agent by adopting a balance (600 g/0.01g of Xingzhi), adding the raw materials into a 10L cylindrical electric mixer of a polymer tablet according to the sequence of main materials, auxiliary materials, additives and powder materials and liquid materials, and mixing at a high speed to obtain a mixture, wherein the mixing speed is 250r/min and the mixing time is 8min;
(2) The mixture is subjected to open smelting hot melting treatment at 180 ℃ on an open mill with the size of Tianhui brand TH6008, wherein the rotating speed is 960r/min, the distance between roller shafts is adjusted to adjust the thickness, sheets with the thickness of 0.6mm and 0.82mm are respectively prepared, and the sheets are taken down, cooled and marked as sheet c.
Performance test:
1. The sheets prepared in example 1 and the sheets prepared in comparative examples 1 to 6 were subjected to the P-32 radiation protection effect test, wherein the cut specimens are shown in fig. 1, and the measuring instrument, working environment and test environment conditions thereof are as follows:
1.1, measuring instrument:
a hand-held radiation detector (model: IA-V2) for measuring beta rays;
an ionization inspection instrument (model: ED 6475) for measuring gamma rays;
An environment-level X-gamma ray measuring instrument (model: FJ 120) for measuring X-rays;
an activity meter (model: CRC-25R) for measuring the radioactivity of P-32;
1.2, working environment:
temperature: 26 ℃, relative humidity 55%;
Uniformly instilling 20 and 40uCi of P-32 solution on 1 square centimeter filter paper, and packaging by a plastic film;
1.3, testing environmental conditions:
the nuclides are placed on a rubber bedding with the thickness of 1cm, and the surrounding environment is free from radio interference;
1.4, test results:
the results of the P-32 sample testing for a 20uCi radioactivity gradient are shown in Table 1:
TABLE 1
Wherein, the background is the natural radioactivity level in the laboratory environment, and the data is the radiation data in the environment without placing the sample and any protective material at the beginning of the experiment;
beta rays are emitted by P-32, X rays are bremsstrahlung generated by beta rays colliding with other atomic nuclei, and gamma rays are usually generated along with other forms of radiation;
the results of the P-32 sample testing for the 40uCi radioactivity gradient are shown in Table 2:
TABLE 2
2. The sheets prepared in example 2 and example 3 were tested for P-32 radiation protection effect, and the measuring instrument, working environment and test environment conditions were as follows:
2.1, measuring instrument:
a hand-held radiation detector (model: IA-V2) for measuring beta rays;
an ionization inspection instrument (model: ED 6475) for measuring gamma rays;
An environment-level X-gamma ray measuring instrument (model: FJ 120) for measuring X-rays;
an activity meter (model: CRC-25R) for measuring the radioactivity of P-32;
2.2, working environment:
temperature: 26 ℃, relative humidity 55%;
Uniformly instilling 20 and 40uCi of P-32 solution on 1 square centimeter filter paper, and packaging by a plastic film;
2.3, testing environmental conditions:
the nuclides are placed on a rubber bedding with the thickness of 1cm, and the surrounding environment is free from radio interference;
2.4, test results:
the results of the P-32 sample testing for a 20uCi radioactivity gradient are shown in Table 3:
TABLE 3 Table 3
| Numbering device | Test object | 20Uci measured value (5 cm) usv/h | 20Uci measured value (30 cm) usv/h |
| 35 | Background of the invention | β:0.308 X:0.688 γ:0.20 | β:0.388 X:0.311 γ:0.32 |
| 36 | Unprotected | β:1100 X:1.885 γ:0.64 | β:86.5 X:1.327 γ:0.92 |
| 37 | Example 2 | β:7.67 X:0.540 γ:0.36 | β:0.526 X:0.415 γ:0.30 |
| 38 | Example 3 | β:5.48 X:0.632 γ:0.20 | β:0.312 X:0.387 γ:0.26 |
The results of the P-32 sample testing for the 40uCi radioactivity gradient are shown in Table 4:
TABLE 4 Table 4
| Numbering device | Test object | 40Uci measured (5 cm) usv/h | 40Uci measured value (30 cm) usv/h |
| 39 | Background of the invention | β:0.372 X:0.715 γ:0.22 | β:0.633 X:0.326 γ:0.26 |
| 40 | Unprotected | β:1100 X:1.578 γ:0.89 | β:225.6 X:4.320 γ:0.88 |
| 41 | Example 2 | β:18.45 X:0.849 γ:0.45 | β:3.015 X:0.514 γ:0.28 |
| 42 | Example 3 | β:10.28 X:0.727 γ:0.30 | β:1.892 X:0.658 γ:0.22 |
In conclusion, the flexible protective material prepared by the embodiment of the invention has good protective effect on P-32 radiation, is easy to realize in process and has low economic cost, and is particularly suitable for wrapping P-32 medicament and preparing P-32 application.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (6)
1. The flexible protective material is characterized by comprising the following raw materials in parts by weight:
45-55 parts of resin powder, 310-330 parts of tungsten powder, 178-198 parts of bismuth powder, 95-105 parts of bismuth oxide, 33-39 parts of dioctyl phthalate, 8-10 parts of di-n-octyl adipate, 2.2-2.6 parts of heat stabilizer, 0.2-0.4 part of ultraviolet absorber, 0.22-0.26 part of antioxidant and 1.4-1.6 parts of opening agent;
The resin powder is three-type polyvinyl chloride resin powder;
The heat stabilizer is a calcium-zinc composite stabilizer or a lead salt stabilizer;
The ultraviolet absorber is one or more of UV531, UV284 and UV 49;
The antioxidant is one or more of antioxidant 1010, antioxidant 168 and antioxidant 264.
2. A method of preparing the flexible protective material of claim 1, comprising the steps of:
Weighing the resin powder, tungsten powder, bismuth oxide, dioctyl phthalate, di-n-octyl adipate, a heat stabilizer, an ultraviolet absorbent, an antioxidant and an opening agent according to the weight parts, and mixing the raw materials at a high speed to obtain a mixture;
and (3) carrying out open mill hot melting treatment on the mixture to prepare a sheet, wherein the sheet is the flexible protective material.
3. A method of producing a flexible protective material according to claim 2, wherein the sheet has a thickness of 0.9-1.1mm.
4. The method for preparing a flexible protective material according to claim 2, wherein in the step of mixing the raw materials at a high speed to obtain the mixture, the time of mixing at a high speed is 7-9min, and the rotational speed is 230-270r/min.
5. The method for producing a flexible protective material according to claim 2, wherein in the step of subjecting the mixture to open-melt heat-sealing treatment, the open-melt heat-sealing temperature is 170-190 ℃ and the rotational speed is 920-1000r/min.
6. Use of the flexible protective material of claim 1 in the preparation of isotope applications.
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