CN112071459A - X/gamma ray shielding composite material based on polyvinyl alcohol through-hole foam and preparation method thereof - Google Patents
X/gamma ray shielding composite material based on polyvinyl alcohol through-hole foam and preparation method thereof Download PDFInfo
- Publication number
- CN112071459A CN112071459A CN202010928908.4A CN202010928908A CN112071459A CN 112071459 A CN112071459 A CN 112071459A CN 202010928908 A CN202010928908 A CN 202010928908A CN 112071459 A CN112071459 A CN 112071459A
- Authority
- CN
- China
- Prior art keywords
- polyvinyl alcohol
- gamma ray
- composite material
- lead
- ray shielding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 58
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 58
- 238000003756 stirring Methods 0.000 claims description 50
- 239000000463 material Substances 0.000 claims description 45
- 239000002131 composite material Substances 0.000 claims description 36
- 230000005251 gamma ray Effects 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 239000006260 foam Substances 0.000 claims description 25
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 24
- 238000001035 drying Methods 0.000 claims description 24
- 239000000203 mixture Substances 0.000 claims description 21
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 19
- 239000007822 coupling agent Substances 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 17
- 238000006359 acetalization reaction Methods 0.000 claims description 13
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 11
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 10
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000011159 matrix material Substances 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 9
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 claims description 8
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 8
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 239000002202 Polyethylene glycol Substances 0.000 claims description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 7
- 229910052797 bismuth Inorganic materials 0.000 claims description 7
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 7
- 229920001223 polyethylene glycol Polymers 0.000 claims description 7
- 229920002678 cellulose Polymers 0.000 claims description 6
- 239000001913 cellulose Substances 0.000 claims description 6
- 235000010980 cellulose Nutrition 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- 229920002472 Starch Polymers 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 4
- 150000001299 aldehydes Chemical class 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229910044991 metal oxide Inorganic materials 0.000 claims description 4
- 150000004706 metal oxides Chemical class 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 239000011733 molybdenum Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- TVXBFESIOXBWNM-UHFFFAOYSA-N Xylitol Natural products OCCC(O)C(O)C(O)CCO TVXBFESIOXBWNM-UHFFFAOYSA-N 0.000 claims description 3
- 235000011187 glycerol Nutrition 0.000 claims description 3
- 229920003063 hydroxymethyl cellulose Polymers 0.000 claims description 3
- 229940031574 hydroxymethyl cellulose Drugs 0.000 claims description 3
- HEBKCHPVOIAQTA-UHFFFAOYSA-N meso ribitol Natural products OCC(O)C(O)C(O)CO HEBKCHPVOIAQTA-UHFFFAOYSA-N 0.000 claims description 3
- 229940068918 polyethylene glycol 400 Drugs 0.000 claims description 3
- 229940085675 polyethylene glycol 800 Drugs 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- 239000000811 xylitol Substances 0.000 claims description 3
- HEBKCHPVOIAQTA-SCDXWVJYSA-N xylitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)CO HEBKCHPVOIAQTA-SCDXWVJYSA-N 0.000 claims description 3
- 235000010447 xylitol Nutrition 0.000 claims description 3
- 229960002675 xylitol Drugs 0.000 claims description 3
- AZUXKVXMJOIAOF-UHFFFAOYSA-N 1-(2-hydroxypropoxy)propan-2-ol Chemical class CC(O)COCC(C)O AZUXKVXMJOIAOF-UHFFFAOYSA-N 0.000 claims description 2
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 claims description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 230000009471 action Effects 0.000 claims description 2
- 238000006136 alcoholysis reaction Methods 0.000 claims description 2
- 229910052788 barium Inorganic materials 0.000 claims description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 2
- 235000019325 ethyl cellulose Nutrition 0.000 claims description 2
- 229910052735 hafnium Inorganic materials 0.000 claims description 2
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 2
- 229920002521 macromolecule Polymers 0.000 claims description 2
- 229920000609 methyl cellulose Polymers 0.000 claims description 2
- 239000001923 methylcellulose Substances 0.000 claims description 2
- 235000010981 methylcellulose Nutrition 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 2
- 229920002401 polyacrylamide Polymers 0.000 claims description 2
- 229940113115 polyethylene glycol 200 Drugs 0.000 claims description 2
- 229940057847 polyethylene glycol 600 Drugs 0.000 claims description 2
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 2
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 2
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 2
- 229910001404 rare earth metal oxide Inorganic materials 0.000 claims description 2
- 229910052706 scandium Inorganic materials 0.000 claims description 2
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 claims description 2
- 239000008107 starch Substances 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- 229910052712 strontium Inorganic materials 0.000 claims description 2
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 2
- 229910052715 tantalum Inorganic materials 0.000 claims description 2
- 229910052718 tin Inorganic materials 0.000 claims description 2
- 229910052727 yttrium Inorganic materials 0.000 claims description 2
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 2
- 230000035699 permeability Effects 0.000 description 20
- 239000000835 fiber Substances 0.000 description 15
- 230000001681 protective effect Effects 0.000 description 14
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 12
- VQCBHWLJZDBHOS-UHFFFAOYSA-N erbium(iii) oxide Chemical compound O=[Er]O[Er]=O VQCBHWLJZDBHOS-UHFFFAOYSA-N 0.000 description 8
- 230000005855 radiation Effects 0.000 description 8
- 239000006261 foam material Substances 0.000 description 7
- 230000007935 neutral effect Effects 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 7
- 239000004745 nonwoven fabric Substances 0.000 description 6
- 229920001592 potato starch Polymers 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 229910001385 heavy metal Inorganic materials 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000013013 elastic material Substances 0.000 description 4
- 239000008098 formaldehyde solution Substances 0.000 description 4
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 description 4
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 4
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 4
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000009987 spinning Methods 0.000 description 4
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 4
- 229910003454 ytterbium oxide Inorganic materials 0.000 description 4
- 229940075624 ytterbium oxide Drugs 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 3
- 239000002861 polymer material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 2
- 150000001621 bismuth Chemical class 0.000 description 2
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(III) oxide Inorganic materials O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229940046892 lead acetate Drugs 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 2
- 239000002759 woven fabric Substances 0.000 description 2
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002594 fluoroscopy Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000002697 interventional radiology Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 229910000464 lead oxide Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002074 melt spinning Methods 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F1/00—Shielding characterised by the composition of the materials
- G21F1/02—Selection of uniform shielding materials
- G21F1/10—Organic substances; Dispersions in organic carriers
- G21F1/103—Dispersions in organic carriers
- G21F1/106—Dispersions in organic carriers metallic dispersions
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to an X/gamma ray shielding composite material based on polyvinyl alcohol through-hole foam and a preparation method thereof. The X/gamma ray shielding composite material based on the polyvinyl alcohol through-hole foam is formed by combining a lead-free X/gamma ray shielding material and polyvinyl alcohol through physical or chemical bonds, and comprises the following components: 40-90 parts of lead-free X/gamma ray shielding material, 10-40 parts of polyvinyl alcohol mixture and 0-20 parts of pore-forming agent, wherein the polyvinyl alcohol accounts for 20-100% of the polyvinyl alcohol mixture. The X/gamma ray shielding composite material of the invention breaks the defect of stuffiness and air impermeability of the traditional ray shielding material, so that the material has comfortable and air permeable performance on the basis of meeting the requirement of X/gamma ray shielding to protect human bodies from being irradiated by rays, and the ray shielding material is combined with a polyvinyl alcohol matrix in a chemical bond form and is not easy to separate out and fall off.
Description
Technical Field
The invention relates to the field of X/gamma ray shielding materials, in particular to an X/gamma ray shielding composite material based on polyvinyl alcohol through-hole foam and a preparation method thereof.
Background
Radiation in real life is common, for example, various electronic products such as mobile phones, computers, wireless transmitters, microwave ovens and the like can generate a certain amount of radiation, but the amount of radiation irradiating human bodies is small, and the influence on the human bodies can be ignored. The domestic three hospitals basically have X-ray examination, interventional radiology departments, CT and the like, and a large number of workers are easily exposed to the irradiation of X-rays or gamma rays in the working process. Although the irradiation of X-rays once is equivalent to the amount of radiation received by the human body from the air for 3 days to 7 months depending on the part to be imaged, the radiation has an accumulative effect, and the radiation easily reaches the threshold value to be borne by each organ of the human body for a long time or a plurality of times, and causes canceration, so that it is necessary to wear an X-ray shielding suit. At present, lead clothes shielding clothes are mainly adopted in hospitals, so that the lead clothes shielding clothes are not only stuffy and airtight, but also face the harm of lead toxicity, and therefore substitutes are urgently needed.
Common X/gamma ray shielding materials comprise heavy metals such as lead/iron and the like and oxides thereof, concrete, high polymers, water, glass and the like, the shielding effects of the heavy metals are different, the shielding effect of the heavy metals is better, and the shielding effectiveness of the heavy metals depends on the type and energy of rays to a great extent. Lead and tungsten with high atomic numbers are commonly used for shielding high-energy rays, but have the defects of large mass, narrow shielding range, incapability of taking into consideration mechanical and thermal properties and the like, so that the development of shielding materials with light weight and high efficiency and special application is generally emphasized. Although lead is relatively cheap and easy to process, lead is toxic, and a 'weak absorption region of lead' exists between 40 and 80KeV, so that the search for a material which is non-toxic, environment-friendly and has shielding effect in the range of 40 to 80KeV is a hot spot of current research.
The technical worker of the Soviet Union treats the modified viscose fiber as an object and the modified fabric with the lead acetate solution, the activity of the X-ray shielding protective material is improved along with the increase of the concentration and the treatment temperature of the lead acetate solution, and the protective material has the advantages of low lead consumption, washing resistance, obvious reduction of the X-ray radiation intensity by using one or two layers of fabrics, and can be used for manufacturing portable protective clothing. Japanese patent laid-open publication No. Sho 58-60299 discloses a method of mixing short lead fibers having a diameter of 40 μm and a length of 0.5-1mm with a fiber-forming polymer and spinning the mixture to produce fibers having a protective function against X and gamma rays, and a lead equivalent of 0.14 mmPb. Japanese patent laid-open publication No. 61-102411 discloses a method of adding barium sulfate having a diameter of 1 μm or less to a viscose solution for total spinning, and a fiber having a strength of 0.9g/d and an elongation of 26% is developed, and the fiber is processed into a woven fabric to form a protective garment having a good protective effect against workers exposed to X-rays for a long period of time. In the X-ray protective clothing of Japanese patent laid-open publication No. Sho 63-198898, a fiber having a radiation shielding function is produced by adsorbing a salt such as lead and iron to an ion exchange fiber having an exchange capacity of 2 to 7 mmol/g. A nonwoven fabric processed from the fiber having an exchange capacity of 3.1mmol/g can protect against X-rays for 80KV fluoroscopy with a lead equivalent of 0.7 mmPb. Chinese patent CN92114675.2 developed X-ray shielding fiber by blending micropowder of heavy metal compounds such as lead oxide and barium sulfate with fiber-forming polymer and melt-spinning, wherein the polypropylene fiber containing 60% barium sulfate has breaking strength of 1.96cN/dtex and breaking elongation of 35%, and can be processed into woven fabric and non-woven fabric for use, 1130g/m2The nonwoven fabric had an X-ray shielding rate of 90.2% at 8.0KeV and 2260g/m2The nonwoven fabric can protect against 120KeV X-rays with a lead equivalent of 0.085 mmPb. The university of Tianjin industry developed polypropylene andthe titer of the anti-X-ray fiber made of the solid shielding agent composite material is more than 2.2dtex, the breaking strength can reach 2.4cN/dtex, the anti-X-ray fiber is made into non-woven fabric with a certain thickness, and then the non-woven fabric is made into protective clothing, so that the anti-X-ray fiber can effectively shield X-rays with medium and low energy.
The X-ray shielding material is mostly in a rubber or PVC coating mode, is heavy, stuffy and airtight, and the fabric or protective clothing made of the X-ray shielding fibers has certain air permeability, but is influenced by a spinning process, the addition amount of the shielding material is limited, so that the whole shielding efficiency is very low, and the protective effect can be achieved only on low-energy X/gamma rays. There is a lack of non-lead gas permeable shielding materials for protection against intermediate and high energy X/gamma rays.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The lead-free shielding material is added from the in-situ preparation of the material, so that the limitation of a fiber spinning process is broken through, the content of the shielding material is high, the medium-high energy X/gamma rays can be effectively shielded, and the air permeability is good.
The invention aims to provide an X/gamma ray shielding composite material with high protective performance, good air permeability and comfortable wearing and a preparation method thereof.
In order to achieve the above objects, the present invention provides an X/gamma ray-shielding composite material based on a polyvinyl alcohol open-cell foam, which is formed by bonding a lead-free X/gamma ray-shielding material and polyvinyl alcohol through a physical or chemical bond, comprising: based on 100 parts by weight of the X/gamma ray shielding composite material, 40-90 parts by weight of lead-free X/gamma ray shielding material, 10-40 parts by weight of polyvinyl alcohol mixture and 0-20 parts by weight of pore-forming agent, wherein the polyvinyl alcohol accounts for 20-100% of the polyvinyl alcohol mixture.
In one embodiment of the present invention, the lead-free X/γ -ray shielding material is selected from one or a mixture of barium, strontium, hafnium, tantalum, molybdenum, tin, bismuth, tungsten, scandium, yttrium and compounds or rare earth oxides thereof.
In another embodiment of the present invention, the lead-free X/γ -ray shielding material is added directly or after being treated with a coupling agent.
In another embodiment of the present invention, the coupling agent treatment of the lead-free X/γ -ray shielding material is carried out using a silane coupling agent OR a titanate coupling agent, and the Si-OR Ti-OR group contained in the coupling agent is subjected to an exchange reaction with a hydroxyl group on the surface of a metal OR metal oxide to form-Si-O-X OR-Ti-O-X, wherein X is a metal OR metal oxide, and the coupling agent is chemically bonded to the surface of the lead-free X/γ -ray shielding material particles.
In another embodiment of the present invention, the silane coupling agent or titanate coupling agent chemically bonded to the surface of the lead-free X/γ -ray shielding material contains a plurality of hydroxyl groups, and in the acetalization step of the preparation of the polyvinyl alcohol open-cell foam, the hydroxyl groups contained in the coupling agent and the hydroxyl groups contained in the polyvinyl alcohol are subjected to acetalization reaction under the action of formaldehyde or glutaraldehyde, so that the coupling agent to which the lead-free X/γ -ray shielding material is attached to the polyvinyl alcohol macromolecule in the form of an ether bond.
In another embodiment of the present invention, the pore-forming agent is selected from one of cellulose, sodium hydroxymethyl cellulose, starch, polyacrylamide and polyvinylpyrrolidone, and the cellulose is selected from one of high/low substituted 2-hydroxypropyl ether cellulose, cellulose ethyl ether and methyl cellulose.
In another embodiment of the invention, the other materials mixed with the polyvinyl alcohol in the polyvinyl alcohol mixture are selected from one or more than two of polyethylene glycol, glycerol, pentaerythritol, xylitol and the like, so that the defect that pure polyvinyl alcohol foam is hard after being dried after being absorbed by moisture is overcome, and the flexibility of the pure polyvinyl alcohol foam is improved.
In another embodiment of the invention, the polyvinyl alcohol has a molecular weight of 7 to 30 ten thousand, an alcoholysis degree of 60 to 99%, and commercial models of 1788, 1799, 2299, 2399, 2499; the molecular weight of the polyethylene glycol is 200-6000, and the commercial models are polyethylene glycol 200, polyethylene glycol 400, polyethylene glycol 600, polyethylene glycol 800 and polyethylene glycol 2000.
In another embodiment of the present invention, the X/gamma-ray shielding composite is gas permeable.
The invention also provides a method for preparing the polyvinyl alcohol through-hole foam-based X/gamma ray shielding composite material, which comprises the following steps:
1) putting the lead-free X/gamma ray shielding material into a high-speed mixer, stirring and drying at the temperature of 100 ℃ and 110 ℃ for 10-15min, then adding a titanate coupling agent or a silane coupling agent, and stirring and modifying at the temperature of 105 ℃ for 3-5min to obtain a modified lead-free X/gamma ray shielding material;
2) dissolving or dispersing a pore-forming agent in water, and uniformly stirring to form a certain liquid;
3) stirring and dissolving a polyvinyl alcohol mixture in water at 95 ℃, adding a modified lead-free X/gamma ray shielding material, stirring uniformly, slowly cooling to 72 ℃, then adding the liquid obtained in the step 2), and stirring uniformly; cooling to 52-54 ℃, and adding an aldehyde solution for acetalization; adding sulfuric acid or hydrochloric acid, mixing and stirring uniformly; then pouring into a mould, and drying for 7-8 hours at 60 ℃; and (3) after demolding, washing with water to remove pore-forming agent, acid and aldehyde in the matrix, and drying to obtain the breathable X/gamma ray shielding composite material based on the polyvinyl alcohol through-hole foam.
The invention has the following beneficial effects:
(1) the X/gamma ray shielding composite material with wide shielding range and good protective performance is prepared by the synergistic effect between metal elements containing different K layer absorption edges or oxides thereof, and particularly has the shielding function in the lead weak absorption area of 40-80Kev range;
(2) the weight is light, the softness and the protective performance are good;
(3) on the basis of considering the protective performance, the air-permeable protective film has good air permeability;
(4) the defect that the polyvinyl alcohol foam becomes hard after moisture absorption and drying is overcome, and the flexibility of the polyvinyl alcohol foam is improved;
(5) the X/gamma ray shielding material and the polyvinyl alcohol matrix are connected in a chemical bond mode through a silane coupling agent or a titanate coupling agent, and two materials with different properties are connected together, so that the compatibility and the reinforcement of the composite material can be improved, and the composite material is not easy to separate out in the subsequent use process.
Detailed Description
The invention concept of the invention comprises a plurality of specific implementation schemes, different implementation schemes have technical or application emphasis, and different implementation schemes can be combined and matched to meet different application scenes and solve different application requirements. Therefore, the following description of specific embodiments should not be construed as limiting the intended scope of the invention.
Example 1
Adding 30 parts by weight of polyvinyl alcohol 1788 (Anhui Uygur high-new materials Co., Ltd.) into 250 parts by weight of water, stirring and dissolving at 90-95 ℃, adding 100 parts by weight of bismuth powder, stirring uniformly, slowly cooling to 72 ℃, then adding 15 parts by weight of potato starch (99%, Guyuan snow crown starch Co., Ltd.) and stirring uniformly; cooling to 52-54 ℃, and adding 8 parts by weight of formaldehyde solution for acetalization; then adding 5 parts by weight of hydrochloric acid, and uniformly mixing and stirring; then pouring into a mould, and drying for 7-8 hours at 65 ℃; and (3) after demolding, washing with water to remove residual potato starch, hydrochloric acid and formaldehyde in the matrix until the water is neutral, and drying to obtain the breathable ray-shielding composite material.
A breathable foam material based on polyvinyl alcohol with a thickness of 1mm is thus obtained, having a grammage of 1.8kg/m2. 72% of the dose can be shielded by X-rays with the tube voltage of 120KV (average energy of 100KeV), and 75% to 90% of the dose can be shielded by low-energy gamma-rays with the tube voltage of 25KV (average energy of 20KeV) to 100KV (average energy of 83 KeV). Air permeability: 125mm/s at 100Pa according to GB/T10655-2003 determination of air permeability of porous elastic polymer material.
Example 2
1) Putting 100 parts by weight of bismuth trioxide/tantalum powder (mass ratio is 1:2) into a high-speed mixer, stirring and drying, wherein the material temperature reaches 100-;
2) dissolving 15 parts by weight of sodium carboxymethylcellulose (99%, Shanghai Changtao Enterprise development Co., Ltd.) in 50 parts by weight of water, and stirring uniformly to form paste for later use;
3) adding 40 parts by weight of polyvinyl alcohol 1788 (Anhui Uygur materials Co., Ltd.)/glycerin (mass ratio is 1:1) into 200 parts by weight of water, stirring and dissolving at 95 ℃, adding 100 parts by weight of modified bismuth trioxide/tantalum powder, stirring uniformly, slowly cooling to 72 ℃, adding the paste (2), and stirring uniformly; cooling to 52-54 ℃, and adding 7 parts by weight of formaldehyde solution for acetalization; then adding 5 parts by weight of sulfuric acid, and mixing and stirring uniformly; then pouring into a mould, and drying for 7-8 hours at 60 ℃; and (3) after demolding, cleaning with water to remove residual sodium hydroxymethyl cellulose, sulfuric acid and formaldehyde in the matrix until the water is neutral, and drying to obtain the breathable ray shielding composite material.
A breathable foam material based on polyvinyl alcohol with a thickness of 1mm is thus obtained, having a grammage of 1.8kg/m2. 68.6% of the dose can be shielded by X-rays with the tube voltage of 120KV (average energy of 100KeV), and 70% to 90% of the dose can be shielded by low-energy gamma-rays with the tube voltage of 25KV (average energy of 20KeV) to 100KV (average energy of 83 KeV). Air permeability: 115mm/s at 100Pa according to GB/T10655-2003 determination of air permeability of porous elastic polymer material.
Example 3
1) 100 parts by weight of tungsten carbide/tungsten powder (mass ratio is 2:1) are put into a high-speed mixer to be stirred and dried, the temperature of the materials reaches 100-;
2) dissolving 12 parts by weight of hydroxypropyl methyl cellulose (CA-F01, 98%, Duomanduo New materials Co., Ltd., Guangzhou city) in 50 parts by weight of water, and stirring uniformly to form paste for later use;
3) adding 50 parts by weight of polyvinyl alcohol 1799 (Anhui Uygur high-tech materials Co., Ltd.)/xylitol (in a mass ratio of 3:2) into 200 parts by weight of water, stirring and dissolving at 95 ℃, adding 100 parts by weight of modified tungsten carbide/tungsten powder, stirring uniformly, slowly cooling to 72 ℃, then adding the paste (2), and stirring uniformly; cooling to 52-54 ℃, and adding 6 parts by weight of glutaraldehyde solution for acetalization; then adding 6 parts by weight of hydrochloric acid, and uniformly mixing and stirring; then pouring into a mould, and drying for 7-8 hours at 65 ℃; and (3) after demolding, washing with water to remove the residual hydroxypropyl methyl cellulose, hydrochloric acid and glutaraldehyde in the matrix until the water is neutral, and drying to obtain the breathable ray-shielding composite material.
A breathable foam material based on polyvinyl alcohol with a thickness of 1mm is thus obtained, having a grammage of 1.7kg/m2. The X-ray with the tube voltage of 120KV (average energy of 100KeV) can shield 62% of dose, and the low-energy gamma-ray with the tube voltage of 25KV (average energy of 20KeV) to 100KV (average energy of 83KeV) can shield 65% to 85% of dose. Air permeability: 112mm/s and 100Pa, according to GB/T10655-2003 determination of air permeability of porous elastic material of high polymer.
Example 4
1) Putting 100 parts by weight of lanthanum oxide/erbium oxide/ytterbium oxide mixture (the mass ratio is 1:1:1) into a high-speed mixer, stirring and drying, wherein the material temperature reaches 100-;
2) dissolving 9 parts by weight of hydroxypropyl methyl cellulose (CA-F01, 98%, Duomanduo New materials Co., Ltd., Guangzhou city) in 50 parts by weight of water, and stirring uniformly to form paste for later use;
3) adding 30 parts by weight of polyvinyl alcohol 2299 (Anhui Uygur materials Co., Ltd)/polyethylene glycol 400 (mass ratio 4:1) into 200 parts by weight of water, stirring and dissolving at 95 ℃, adding 100 parts by weight of modified lanthanum oxide/erbium oxide/ytterbium oxide mixture, stirring uniformly, slowly cooling to 72 ℃, then adding the paste (2), and stirring uniformly; cooling to 52-54 ℃, and adding 7 parts by weight of formaldehyde solution for acetalization; then adding 4 parts by weight of sulfuric acid, and mixing and stirring uniformly; then pouring into a mould, drying for 7-8 hours at 65 ℃: and (3) after demolding, washing with water to remove the residual hydroxypropyl methyl cellulose, sulfuric acid and formaldehyde in the matrix until the water is neutral, and drying to obtain the breathable ray-shielding composite material.
A breathable foam material based on polyvinyl alcohol with a thickness of 1mm is thus obtained, having a grammage of 1.5kg/m2. 62.8% of the dose can be shielded by X-rays with the tube voltage of 120KV (average energy of 100KeV), and 65% to 85% of the dose can be shielded by low-energy gamma-rays with the tube voltage of 25KV (average energy of 20KeV) to 100KV (average energy of 83 KeV). Air permeability: 105mm/s and 100Pa, according to GB/T10655-2003 determination of air permeability of porous elastic materials for high polymers.
Example 5
1) 100 parts by weight of barium sulfate/erbium oxide/ytterbium oxide/tungsten powder mixture (the mass ratio is 1:1:1:1) is placed into a high-speed mixer to be stirred and dried, the material temperature reaches 100-;
2) adding 20 parts by weight of polyvinyl alcohol 2399 (Anhui Uygur high-new materials Co., Ltd.)/polyethylene glycol 800 (mass ratio of 2:3) into 250 parts by weight of water, stirring and dissolving at 90-95 ℃, adding 100 parts by weight of modified barium sulfate/erbium oxide/ytterbium oxide/tungsten powder mixture, stirring uniformly, slowly cooling to 72 ℃, then adding 6 parts by weight of potato starch (99%, Guyuan Xuuan starch Co., Ltd.) and stirring uniformly; cooling to 52-54 ℃, and adding 8 parts by weight of glutaraldehyde solution for acetalization; then adding 5 parts by weight of hydrochloric acid, and uniformly mixing and stirring; then pouring into a mould, and drying for 7-8 hours at 65 ℃; and (3) after demolding, washing with water to remove residual potato starch, hydrochloric acid and glutaraldehyde in the matrix until the water is neutral, and drying to obtain the breathable ray-shielding composite material.
A breathable foam material based on polyvinyl alcohol with a thickness of 1mm is thus obtained, having a grammage of 1.6kg/m2. 70.3% of the dose can be shielded by X-rays with the tube voltage of 120KV (average energy of 100KeV), and 70% to 90% of the dose can be shielded by low-energy gamma-rays with the tube voltage of 25KV (average energy of 20KeV) to 100KV (average energy of 83 KeV). Air permeability: 119mm/s at 100Pa according to GB/T10655-2003 determination of air permeability of porous elastic polymer material.
Example 6
(1) 100 parts by weight of barium sulfate/molybdenum/bismuth/tungsten carbide mixture (the mass ratio is 1:2:2:1) is placed into a high-speed mixer to be stirred and dried, the material temperature reaches 100-.
(2) Adding 40 parts by weight of polyvinyl alcohol 2699 (Anhui Uygur materials Co., Ltd.)/polyethylene glycol 2000 (mass ratio of 3:2) and 1 part by weight of polymethyl pyrrolidone into 250 parts by weight of water, stirring and dissolving at 95 ℃, adding 100 parts by weight of modified barium sulfate/molybdenum/bismuth/tungsten carbide mixture, uniformly stirring, slowly cooling to 50-54 ℃, adding 2 parts by weight of sodium dodecyl benzene sulfonate, adjusting the speed of a stirrer to be about 1500r/min, and continuously stirring for 20min to enable the solution to be freely foamed to be about 1.5 times of the original volume. Adding 9 parts by weight of formaldehyde solution for acetalization and 6 parts by weight of hydrochloric acid, uniformly mixing and stirring for 2min at the stirring speed of about 1500r/min, then injecting into a mold, and then placing the mold into an oven set at 65 ℃ for curing for 7-8 hours for molding; and (3) after demolding, washing with water to remove residual sodium dodecyl benzene sulfonate, formaldehyde, hydrochloric acid and the like until the water is neutral, and drying to obtain the breathable ray-shielding composite material.
A breathable foam material based on polyvinyl alcohol with a thickness of 1mm is thus obtained, having a grammage of 1.6kg/m2. 62.5% of the dose can be shielded by X-rays with the tube voltage of 120KV (average energy of 100KeV), and 65% to 85% of the dose can be shielded by low-energy gamma-rays with the tube voltage of 25KV (average energy of 20KeV) to 100KV (average energy of 83 KeV). Air permeability: 108mm/s and 100Pa, according to GB/T10655-2003 determination of air permeability of porous elastic materials for high polymers.
Comparative examples
1) Putting 100 parts by weight of a bismuth powder/tungsten powder mixture (the mass ratio is 1:1) into a high-speed mixer, stirring and drying, wherein the material temperature reaches 100 ℃ and the drying time is 10-15min, so that the water content of the bismuth powder/tungsten powder mixture is lower than 0.3%, slowly adding 10 parts by weight of isopropanol solution (isopropanol/silane coupling agent is 1:10) of silane coupling agent (KH-550), stirring, controlling the temperature to be 105 ℃, and modifying for 3-5 min;
2) adding 9 parts by weight of polyvinyl alcohol 1788 (Anhui Uygur high-new materials Co., Ltd.) into 75 parts by weight of water, stirring and dissolving at 90-95 ℃, adding 100 parts by weight of modified bismuth powder/tungsten powder mixture, stirring uniformly, slowly cooling to 72 ℃, then adding 8 parts by weight of potato starch (99%, Guyuan snow crown starch Co., Ltd.), and stirring uniformly; cooling to 52-54 ℃, and adding 8 parts by weight of glutaraldehyde solution for acetalization; then adding 5 parts by weight of hydrochloric acid, and uniformly mixing and stirring; then pouring into a mould, and drying for 7-8 hours at 65 ℃; and (3) after demolding, washing with water to remove residual potato starch, hydrochloric acid and glutaraldehyde in the matrix until the water is neutral, and drying to obtain the breathable ray-shielding composite material.
A breathable foam material based on polyvinyl alcohol with a thickness of 1mm is thus obtained, having a grammage of 2.0kg/m2. 78% of the dose can be shielded by X-rays with the tube voltage of 120KV (average energy of 100KeV), and 80% to 92% of the dose can be shielded by low-energy gamma-rays with the tube voltage of 25KV (average energy of 20KeV) to 100KV (average energy of 83 KeV). Air permeability: 22mm/s at 100Pa, according to GB/T10655-2003 "determination of air permeability of porous elastic materials for high polymers".
In the comparative example, since the content of the added ray-shielding material exceeds 90%, the foaming ratio is too low, so that the air permeability of the foam composite material is low, and the foam composite material is hard and has poor flexibility. The ray shielding composite material obtained by the embodiment of the application has good flexibility, air permeability and ray shielding performance.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the invention to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable others skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the following claims and their equivalents.
Claims (10)
1. An X/gamma ray shielding composite material based on polyvinyl alcohol through-hole foam is characterized by being formed by combining a lead-free X/gamma ray shielding material and polyvinyl alcohol through physical or chemical bonds, and the X/gamma ray shielding composite material based on polyvinyl alcohol through-hole foam comprises: based on 100 parts by weight of the X/gamma ray shielding composite material, 40-90 parts by weight of lead-free X/gamma ray shielding material, 10-40 parts by weight of polyvinyl alcohol mixture and 0-20 parts by weight of pore-forming agent, wherein the polyvinyl alcohol accounts for 20-100% of the polyvinyl alcohol mixture.
2. The polyvinyl alcohol open-cell foam-based X/gamma ray-shielding composite material according to claim 1, wherein the lead-free X/gamma ray-shielding material is selected from one or a mixture of barium, strontium, hafnium, tantalum, molybdenum, tin, bismuth, tungsten, scandium, yttrium and compounds or rare earth oxides thereof.
3. The polyvinyl alcohol through-hole foam-based X/gamma ray-shielding composite material according to claim 1, wherein the lead-free X/gamma ray-shielding material is added directly or after being treated with a coupling agent.
4. The polyvinyl alcohol through-hole foam-based X/gamma ray-shielding composite material according to claim 3, wherein the lead-free X/gamma ray-shielding material is treated with a silane coupling agent OR a titanate coupling agent, and Si-OR OR Ti-OR groups contained in the coupling agent are subjected to exchange reaction with hydroxyl groups on the surface of a metal OR metal oxide to form-Si-O-X OR-Ti-O-X, wherein X is a metal OR metal oxide, and the coupling agent is bonded to the surface of the lead-free X/gamma ray-shielding material particles in the form of chemical bonds.
5. The polyvinyl alcohol through-hole foam-based X/gamma ray-shielding composite material as claimed in claim 4, wherein the silane coupling agent or titanate coupling agent chemically bonded to the surface of the lead-free X/gamma ray-shielding material contains a plurality of hydroxyl groups, and in the acetalization stage of the preparation of the polyvinyl alcohol through-hole foam, the hydroxyl groups contained in the coupling agent and the hydroxyl groups contained in the polyvinyl alcohol are subjected to acetalization reaction under the action of formaldehyde or glutaraldehyde, so that the coupling agent to which the lead-free X/gamma ray-shielding material is attached to the polyvinyl alcohol macromolecules in the form of ether bonds.
6. The polyvinyl alcohol through-hole foam-based X/gamma ray shielding composite material according to claim 1, wherein the pore-forming agent is selected from one of cellulose, sodium hydroxymethyl cellulose, starch, polyacrylamide and polyvinylpyrrolidone, and the cellulose is selected from one of high/low substituted 2-hydroxypropyl ether cellulose, cellulose ethyl ether and methyl cellulose.
7. The polyvinyl alcohol through-hole foam-based X/gamma ray-shielding composite material as claimed in claim 1, wherein the other materials mixed with polyvinyl alcohol in the polyvinyl alcohol mixture are selected from one or a mixture of more than two of polyethylene glycol, glycerol, pentaerythritol and xylitol.
8. The polyvinyl alcohol through-hole foam-based X/gamma ray-shielding composite material according to claim 7, wherein the molecular weight of the polyvinyl alcohol is 7-30 ten thousand, the alcoholysis degree is 60-99%, and the commercial models are 1788, 1799, 2299, 2399, 2499; the molecular weight of the polyethylene glycol is 200-6000, and the commercial models are polyethylene glycol 200, polyethylene glycol 400, polyethylene glycol 600, polyethylene glycol 800 and polyethylene glycol 2000.
9. The polyvinyl alcohol open-cell foam-based X/gamma ray-shielding composite material according to claim 1, wherein the X/gamma ray-shielding composite material is gas-permeable.
10. A method for preparing a polyvinyl alcohol open-cell foam based X/gamma ray shielding composite according to any one of claims 1 to 9, characterized in that the method comprises the steps of:
1) putting the lead-free X/gamma ray shielding material into a high-speed mixer, stirring and drying at the temperature of 100 ℃ and 110 ℃ for 10-15min, then adding a titanate coupling agent or a silane coupling agent, and stirring and modifying at the temperature of 105 ℃ for 3-5min to obtain a modified lead-free X/gamma ray shielding material;
2) dissolving or dispersing a pore-forming agent in water, and uniformly stirring to form a certain liquid;
3) stirring and dissolving a polyvinyl alcohol mixture in water at 95 ℃, adding a modified lead-free X/gamma ray shielding material, stirring uniformly, slowly cooling to 72 ℃, then adding the liquid obtained in the step 2), and stirring uniformly; cooling to 52-54 ℃, and adding an aldehyde solution for acetalization; adding sulfuric acid or hydrochloric acid, mixing and stirring uniformly; then pouring into a mould, and drying for 7-8 hours at 60 ℃; and (3) after demolding, washing with water to remove pore-forming agent, acid and aldehyde in the matrix, and drying to obtain the breathable X/gamma ray shielding composite material based on the polyvinyl alcohol through-hole foam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010928908.4A CN112071459A (en) | 2020-09-07 | 2020-09-07 | X/gamma ray shielding composite material based on polyvinyl alcohol through-hole foam and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010928908.4A CN112071459A (en) | 2020-09-07 | 2020-09-07 | X/gamma ray shielding composite material based on polyvinyl alcohol through-hole foam and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112071459A true CN112071459A (en) | 2020-12-11 |
Family
ID=73663815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010928908.4A Pending CN112071459A (en) | 2020-09-07 | 2020-09-07 | X/gamma ray shielding composite material based on polyvinyl alcohol through-hole foam and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112071459A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113674888A (en) * | 2021-08-20 | 2021-11-19 | 山东双鹰医疗器械有限公司 | X-ray and gamma-ray protective hard material and preparation method thereof |
| CN115012054A (en) * | 2022-07-08 | 2022-09-06 | 中国核动力研究设计院 | X-ray shielding material, preparation method and application |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104658624A (en) * | 2015-01-27 | 2015-05-27 | 华东理工大学 | Radiation shielding electronic packaging material and preparation method for same |
| US20170200518A1 (en) * | 2014-06-23 | 2017-07-13 | Rsmtech Co., Ltd. | Composition for radiation shielding and method for preparing same |
| CN107910089A (en) * | 2017-11-17 | 2018-04-13 | 南京核安核能科技有限公司 | A kind of protective garment of the unleaded radiation of novel flexible |
| CN210925514U (en) * | 2019-08-12 | 2020-07-03 | 圣华盾防护科技股份有限公司 | Anti-ray protective clothing |
-
2020
- 2020-09-07 CN CN202010928908.4A patent/CN112071459A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170200518A1 (en) * | 2014-06-23 | 2017-07-13 | Rsmtech Co., Ltd. | Composition for radiation shielding and method for preparing same |
| CN104658624A (en) * | 2015-01-27 | 2015-05-27 | 华东理工大学 | Radiation shielding electronic packaging material and preparation method for same |
| CN107910089A (en) * | 2017-11-17 | 2018-04-13 | 南京核安核能科技有限公司 | A kind of protective garment of the unleaded radiation of novel flexible |
| CN210925514U (en) * | 2019-08-12 | 2020-07-03 | 圣华盾防护科技股份有限公司 | Anti-ray protective clothing |
Non-Patent Citations (1)
| Title |
|---|
| 张玉龙: "《泡沫塑料制品配方设计与加工实例》", 31 January 2006 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113674888A (en) * | 2021-08-20 | 2021-11-19 | 山东双鹰医疗器械有限公司 | X-ray and gamma-ray protective hard material and preparation method thereof |
| CN115012054A (en) * | 2022-07-08 | 2022-09-06 | 中国核动力研究设计院 | X-ray shielding material, preparation method and application |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112063159B (en) | Breathable X/gamma ray shielding composite material and preparation method thereof | |
| CN110936676B (en) | Filter layer body for efficient dust mask | |
| CN112071459A (en) | X/gamma ray shielding composite material based on polyvinyl alcohol through-hole foam and preparation method thereof | |
| CN101768362B (en) | Condensed room temperature vulcanized silicone rubber with radiation-resistant property and preparation method thereof | |
| KR102318127B1 (en) | Hybrid lead-free radiation shielding material and radiation shielding suit using the same | |
| KR101145703B1 (en) | Radiation shield sheet | |
| CN108411492B (en) | A kind of preparation method of non-woven fabric for X, gamma ray protection | |
| JP2008081876A (en) | Fiber processing agent and fiber product using the same | |
| CN110359151B (en) | Nuclear radiation protection yarn with temperature control function and preparation method thereof | |
| CN112060731B (en) | Multifunctional shielding composite material with air permeability and preparation method thereof | |
| KR20040070245A (en) | Microphase Separated Superabsorbent Compositions and Method for Making | |
| CN102775726B (en) | Polyether-ether-ketone composite material containing gadolinium oxide and preparation method of composite material | |
| CN110527252A (en) | A kind of epoxy resin neutron shielding material and the preparation method and application thereof | |
| CN1322047C (en) | Rare earth modified leadless X-ray shielding plastic | |
| CN104532381B (en) | A kind of preparation method of X-ray-preventing rare earth/polypropylene composite materials fiber | |
| CN113223740A (en) | Lead-free radiation protection gloves and preparation method thereof | |
| CN112900155A (en) | Preparation method of non-woven fabric for X and gamma ray protection | |
| CN1940172A (en) | Multifunctional nano fabrics | |
| CN112625511A (en) | Preparation method of chitosan skeleton-based silicon-based radiation-proof coating | |
| CN112011180A (en) | Wave-absorbing radiation-proof plastic and preparation method thereof | |
| CN110983779A (en) | Preparation method of sheath-core structure fiber for jointly protecting neutrons and gamma rays | |
| CN116516517A (en) | ES large biological fiber containing saussurea involucrata active ingredient and preparation method thereof | |
| KR101036664B1 (en) | Superabsorbent structure and manufacturing method thereof | |
| CN1073263C (en) | Mixed lanthanide contg. Shield composite material for medical X-ray protection | |
| CN112195530B (en) | Temperature response material, temperature response fiber and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201211 |