CN111234099B - High-performance radiation-proof lead-containing organic glass and preparation method thereof - Google Patents
High-performance radiation-proof lead-containing organic glass and preparation method thereof Download PDFInfo
- Publication number
- CN111234099B CN111234099B CN202010171254.5A CN202010171254A CN111234099B CN 111234099 B CN111234099 B CN 111234099B CN 202010171254 A CN202010171254 A CN 202010171254A CN 111234099 B CN111234099 B CN 111234099B
- Authority
- CN
- China
- Prior art keywords
- lead
- organic glass
- containing organic
- radiation
- initiator
- 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.)
- Active
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/56—Acrylamide; Methacrylamide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/04—Acids; Metal salts or ammonium salts thereof
- C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Glass Compositions (AREA)
Abstract
The invention discloses high-performance radiation-proof lead-containing organic glass and a preparation method thereof, and belongs to the technical field of preparation of the lead-containing organic glass at the same time. The method comprises the following steps: adding 30.00-50.00 wt% of unsaturated lead carboxylate, 5.00-25.00 wt% of caprylic acid or pelargonic acid, 15.00-25.00 wt% of optical property modifier, 15.00-25.00 wt% of acrylamide and 2.50wt% of methacrylic acid into a container, heating, stirring and dissolving until the system is clear and transparent; adding an initiator, and after the initiator is dissolved, carrying out vacuum defoaming treatment; and finally, carrying out gradient heating polymerization reaction, and cooling to room temperature after polymerization is finished to obtain the organic glass. The method is simple to operate, and the obtained radiation-proof organic glass has high ray shielding performance, good transparency, good toughness, high hardness and high strength, and is expected to be used in places with gamma rays and X-ray radiation.
Description
Technical Field
The invention belongs to the technical field of preparation of lead-containing organic glass, and relates to high-performance radiation-proof lead-containing organic glass and a preparation method thereof.
Background
With the rapid development of agriculture and industrial production, national defense research, radiology and atomic energy industry, various rays are widely applied. However, while using radiation, the hazards associated with radiation, especially neutrons and gamma rays with strong penetrating power, which are generated in nuclear radiation, should also be avoided. Transparent radiation-proof materials are required to be applied in the application fields of aviation, nuclear energy, medical treatment and the like, and the application fields of the radiation-proof materials are continuously widened along with the development of science and technology.
The power of gamma rays is mainly expressed in the following two aspects: one is that the energy of gamma rays is large. Since the wavelength of gamma rays is very short and the frequency is high, it has very large energy. The damage effect of high-energy gamma rays on human bodies is quite large, when the radiation dose of gamma rays on human bodies reaches 200 plus 600 Remu, hematopoietic organs such as bone marrow of the human bodies are damaged, the white blood cells are seriously reduced, the internal bleeding and the hair falling are seriously reduced, and the death probability in two months is 0-80 percent; when the radiation dose is 600-1000 Rehm, the death probability in two months is 80-100 percent; when the radiation dose is 1000-1500 Rem, the gastrointestinal system of the human body is damaged, diarrhea, fever and endocrine dyscrasia occur, and the death probability is almost 100 percent within two weeks; when the radiation dose is more than 5000 rem, the central nervous system can be damaged, spasm, tremor, maladjustment and somnolence can occur, and the death probability in two days is 100%. Secondly, the penetrability of gamma rays is extremely strong. Gamma rays are a kind of weapon that kills people and are much more powerful than medium bullets. The neutron bullet uses neutron flow as an attack means, but the yield of neutrons is small and only occupies a small part of energy released by nuclear explosion, so that the killing range is only 500-700 meters, and the neutron bullet is generally used as a tactical weapon. Therefore, the development of materials for preventing neutrons and gamma rays has important significance. The shielding effect of the material on gamma rays mainly depends on the probability of the incident photons and the material to generate photoelectric effect and Compton effect, and the photoelectric effect and the Compton effect are both the result of the interaction between the photons and the electron outside the atomic nucleus. Therefore, the number of the nuclear electrons, the size of the energy level and the number of the energy level of the internal orbital electrons of the absorbed atoms and the distribution of the orbital electrons all influence the shielding performance of the material. Lead has an atomic number of 82, is a non-radioactive element with the largest atomic weight, and is the most commonly used gamma-ray shielding material. The common organic glass product has good transparency but weak protection capability to various rays. Therefore, the transparent radiation-proof organic glass can be prepared by introducing the lead element into the organic glass.
Due to the security limitation, the research reports on neutron-resistant and gamma-radiation-resistant transparent materials at home and abroad are few, and the related applications are hardly reported. In the existing research data on neutron radiation-proof transparent materials, there is a literature report (research progress of rare earth/polymer composite materials) that a rare earth compound and a double bond-containing organic substance with addition reaction capability, such as methacrylic acid, are subjected to coordination, and then a second monomer styrene is introduced for copolymerization, so that the prepared polystyrene/polymethyl methacrylate-rare earth copolymer has the capability of shielding thermal neutrons and light transmittance, but the effect is not optimal, the content of rare earth elements is low, and the polystyrene/polymethyl methacrylate-rare earth copolymer does not have the capability of preventing gamma rays. The difficulty of the modification research aiming at the radiation-proof organic glass at present is that the radiation-proof organic glass is difficult to have shielding performance, high optical performance and stronger comprehensive mechanical performance at the same time.
Aiming at dynamic use environments such as airplanes and tanks, the radiation-proof organic glass has excellent ray shielding performance, good transparency and high comprehensive mechanical property. Therefore, the preparation of the high-performance radiation-proof lead-containing organic glass has important significance.
Disclosure of Invention
The invention aims to provide high-performance radiation-proof lead-containing organic glass and a preparation method thereof.
In order to solve the technical problems, the invention adopts the following technical scheme:
a high-performance radiation-proof lead-containing organic glass and a preparation method thereof comprise the following steps:
adding 30.00-50.00 wt% of unsaturated lead carboxylate, 5.00-25.00 wt% of caprylic acid or pelargonic acid, 15.00-25.00 wt% of optical performance modifier, 15.00-25.00 wt% of acrylamide and 2.50wt% of methacrylic acid into a container, wherein the sum of the mass percentages of the components is 100%, and heating, stirring and dissolving until the system is clear and transparent; adding an initiator, and pouring the solution into a mold for vacuum defoaming treatment after the initiator is dissolved; and finally, carrying out gradient heating polymerization reaction, cooling to room temperature after polymerization is finished, and demolding to obtain the high-performance radiation-proof lead-containing organic glass.
Further, the unsaturated carboxylic acid lead is any one of methacrylic acid lead and acrylic acid lead.
Further, the content of octanoic acid or nonanoic acid is 50wt% of the unsaturated carboxylic acid lead.
Further, the optical property modifier is ethoxylated bisphenol A dimethacrylate.
Specifically, the ethoxylated bisphenol a dimethacrylate is any one of a diethoxylated bisphenol a dimethacrylate, a triethoxylated bisphenol a dimethacrylate, a tetraethoxylated bisphenol a dimethacrylate, an octaethoxylated bisphenol a dimethacrylate, and a decaethoxylated bisphenol a dimethacrylate.
Further, the heating and stirring temperature is 70 +/-5 ℃, and the time is 10-30 min.
Further, the time for vacuumizing and defoaming is 10-20 min.
Further, the gradient temperature rise polymerization process is 55 +/-5 ℃ for 12 hours, 80 +/-5 ℃ for 6 hours and 100 +/-5 ℃ for 6 hours.
Further, cooling to room temperature at a speed of 6-10 ℃/h after the polymerization is finished.
Compared with the prior art, the invention has the advantages that:
(1) the radiation-proof organic glass prepared by the invention has good gamma ray and X ray shielding effects.
(2) The anti-radiation lead-containing organic glass prepared by the invention has the advantages of good transparency, good toughness, high hardness and high strength.
(3) The invention uses a new optical property modifier, can effectively improve the optical property of the material, and finds that the mechanical property is also enhanced.
Drawings
FIG. 1 shows the difference Pb (AA)2The shielding rate of the content against X-rays having an energy of 20 keV.
FIG. 2 shows the difference in Pb (AA)2The shielding rate of the content against X-rays having an energy of 50 keV.
FIG. 3 shows the difference in Pb (AA)2The shielding rate of the content against X-rays having an energy of 100 keV.
FIG. 4 shows the difference in Pb (AA)2The shielding rate of the content against X-rays having an energy of 150 keV.
FIG. 5 shows the difference in Pb (AA)2The shielding rate of the content against X-rays having an energy of 200 keV.
Detailed Description
The preparation method of the high-performance radiation-proof lead-containing organic glass comprises the following steps:
(1) preparing a mould: and cleaning and drying the two pieces of toughened glass, and manufacturing the mold by using the silica gel strip as a gasket.
(2) Dissolving: unsaturated lead carboxylate, caprylic acid or pelargonic acid, optical property modifier (ethoxylated bisphenol A dimethacrylate: e.g. one of diethoxylated bisphenol A dimethacrylate, triethoxylated bisphenol A dimethacrylate, tetraethoxylated bisphenol A dimethacrylate, octaethoxylated bisphenol A dimethacrylate and decaethoxylated bisphenol A dimethacrylate), acrylamide and methacrylic acid are added into a three-neck flask, heated in water bath, stirred and dissolved until the system is clear and transparent. The heating and dissolving temperature is 65-75 ℃, and the time is 10-30 min.
(3) Defoaming treatment: after the initiator is added to dissolve, the solution is poured into a mold. And (5) placing the mould in a vacuum drying oven for defoaming treatment. The defoaming time is 10-20 min.
(4) Gradient temperature-rising polymerization: the polymerization process is carried out at 55 + -5 deg.C for 12h, at 80 + -5 deg.C for 6h, and at 100 + -5 deg.C for 6 h.
(5) And after the polymerization is finished, cooling to room temperature at the speed of 6-10 ℃/h, and demolding to obtain the radiation-resistant gadolinium-containing organic glass.
Firstly, the shielding capability of the radiation-proof lead-containing organic glass to X-rays with different energies is calculated through Monte Carlo simulation. From the results of the simulation calculations, it can be seen that the shielding efficiency of the material is positively correlated with the thickness of the lead acrylate material. The detailed results are shown in FIGS. 1-5.
Example 1
40.00 wt% of lead acrylate (Pb (AA)) was weighed out separately on an electronic balance2) (60.00g), 20.00 wt% Nonanoic Acid (NA) (30.00g), 0.00wt% bisphenol A triethoxide dimethacrylate (BPA3EODMA) (0.00g), 40.00 wt% Acrylamide (AM) (60.00g), 0.00wt% methacrylic acid (MAA) (0.00g) were placed in a 250mL three-necked flask. Stirring and dissolving in a water bath at 70 ℃ for 15-20 min to finally obtain a clear and transparent mixed solution. 0.05 wt% Azobisisobutyronitrile (AIBN) (0.075g) was added. And (5) pouring the mold after the initiator is dissolved. Placing the mold into a vacuum drying oven for 15minAnd (5) soaking. And finally, placing the mold into an oven for gradient heating polymerization at 55 ℃ for 12 hours, at 80 ℃ for 6 hours and at 100 ℃ for 6 hours until the polymerization is complete, and finally demolding to obtain the high-performance radiation-proof organic glass.
Example 2
40.00 wt% of Pb (AA) was weighed out on an electronic balance2(60.00g), 20.00 wt% NA (30.00g), 25.00wt% BPA3EODMA (37.50g), 15.00 wt% AM (22.50g), 0.00wt% MAA (0.00g) were placed in a 250mL three-necked flask. Stirring and dissolving in a water bath at 70 ℃ for 15-20 min to finally obtain a clear and transparent mixed solution. 0.05 wt% AIBN (0.075g) was added. And (5) pouring the mold after the initiator is dissolved. And (4) placing the mould into a vacuum drying oven for defoaming for 15 min. And finally, placing the mold into an oven for gradient heating polymerization at 55 ℃ for 12 hours, at 80 ℃ for 6 hours and at 100 ℃ for 6 hours until the polymerization is complete, and finally demolding to obtain the high-performance radiation-proof organic glass.
Example 3
40.00 wt% of Pb (AA) was weighed out on an electronic balance2(60.00g), 20.00 wt% NA (30.00g), 20.00 wt% BPA3EODMA (30.00g), 20.00 wt% AM (30.00g), 0.00wt% MAA (0.00g) were placed in a 250mL three-necked flask. Stirring and dissolving in a water bath at 70 ℃ for 15-20 min to finally obtain a clear and transparent mixed solution. 0.05 wt% AIBN (0.075g) was added. And (5) pouring the mold after the initiator is dissolved. And (4) placing the mould into a vacuum drying oven for defoaming for 15 min. And finally, placing the mold into an oven for gradient heating polymerization at 55 ℃ for 12 hours, at 80 ℃ for 6 hours and at 100 ℃ for 6 hours until the polymerization is complete, and finally demolding to obtain the high-performance radiation-proof organic glass.
Example 4
40.00 wt% of Pb (AA) was weighed out on an electronic balance2(60.00g), 20.00 wt% NA (30.00g), 15.00 wt% BPA3EODMA (22.50g), 25.00wt% AM (37.50g), 0.00wt% MAA (0.00g) were placed in a 250mL three-necked flask. Stirring and dissolving in a water bath at 70 ℃ for 15-20 min to finally obtain a clear and transparent mixed solution. 0.05 wt% AIBN (0.075g) was added. And (5) pouring the mold after the initiator is dissolved. And (4) placing the mould into a vacuum drying oven for defoaming for 15 min. Finally, the mould is put into a drying oven for gradient heating polymerization for 12 hours at 55 ℃, 6 hours at 80 ℃ and 6 hours at 100 ℃ until the temperature is completely raised, and finally the mould is demoulded to obtain the high-performance radiation-proof materialMachine glass.
Example 5
40.00 wt% of Pb (AA) was weighed out on an electronic balance2(60.00g), 20.00 wt% NA (30.00g), 40.00 wt% BPA3EODMA (60.00g), 0.00wt% AM (0.00g), 0.00wt% MAA (0.00g) were placed in a 250mL three-necked flask. Stirring and dissolving in a water bath at 70 ℃ for 15-20 min to finally obtain a clear and transparent mixed solution. 0.05 wt% of Azobisisobutyronitrile (AIBN) (0.075g) was added as an initiator. And (5) pouring the mold after the initiator is dissolved. And (4) placing the mould into a vacuum drying oven for defoaming for 15 min. And finally, placing the mold into an oven for gradient heating polymerization at 55 ℃ for 12 hours, at 80 ℃ for 6 hours and at 100 ℃ for 6 hours until the polymerization is complete, and finally demolding to obtain the high-performance radiation-proof organic glass.
Example 6
40.00 wt% of Pb (AA) was weighed out on an electronic balance2(60.00g), 20.00 wt% NA (30.00g), 15.00 wt% BPA3EODMA (22.50g), 22.50 wt% AM (33.75g), 2.50wt% MAA (3.75g) were placed in a 250mL three-necked flask. Stirring and dissolving in a water bath at 70 ℃ for 15-20 min to finally obtain a clear and transparent mixed solution. 0.05 wt% AIBN (0.075g) was added. And (5) pouring the mold after the initiator is dissolved. And (4) placing the mould into a vacuum drying oven for defoaming for 15 min. And finally, placing the mold into an oven for gradient heating polymerization at 55 ℃ for 12 hours, at 80 ℃ for 6 hours and at 100 ℃ for 6 hours until the polymerization is complete, and finally demolding to obtain the high-performance radiation-proof organic glass.
Comparing the optical property and the mechanical property of the examples 1 and 2-5, it is found that the optical property of the radiation-proof lead-containing organic glass can be effectively improved by the triethoxy bisphenol A dimethacrylate, probably because the refractive index of the triethoxy bisphenol A dimethacrylate is higher, and the refractive index of the copolymer of the metal organic monomer and other organic monomers can be adjusted. Comparative examples 1 and 5 found that, surprisingly, the addition of triethoxylated bisphenol a dimethacrylate resulted in a significant increase in impact strength in addition to optical properties, probably because triethoxylated bisphenol a dimethacrylate contained flexible ethoxy groups that increased toughness.
Comparing example 4 with example 6, it was found that a small amount of methacrylic acid can further improve the optical properties and mechanical properties of the leaded organic glass. The detailed results are shown in Table 1.
TABLE 1
The invention also finds out through other experiments that:
(1) when the unsaturated lead carboxylate is lead methacrylate, the prepared lead-containing organic glass has the same ray shielding effect. Therefore, the detailed description of the embodiments is omitted.
(2) Octanoic acid and nonanoic acid are used as cosolvents, and because the structures are similar, the dissolving capacities are basically the same, and the influences on the material properties are almost not different, the detailed description of the embodiments is omitted.
(3) When the ethoxylated bisphenol A dimethacrylate is any one of the diethoxylated bisphenol A dimethacrylate, the triethoxylated bisphenol A dimethacrylate, the tetraethoxylated bisphenol A dimethacrylate, the octaethoxylated bisphenol A dimethacrylate and the decaethoxylated bisphenol A dimethacrylate, the optical performance and the comprehensive mechanical performance are both well improved. Therefore, the detailed description of the embodiments is omitted.
(4) Through a plurality of experiments, the radiation-proof organic glass containing 40.00 wt% of lead acrylate has the following contents of other additives or monomers: 20.00 weight percent of nonanoic acid, 15.00 weight percent of triethoxy bisphenol A dimethacrylate, 22.50 weight percent of acrylamide, 2.50 weight percent of methacrylic acid and 0.05 weight percent of AIBN, the prepared radiation-proof organic glass has the best performance.
Claims (7)
1. A preparation method of high-performance radiation-proof lead-containing organic glass is characterized by comprising the following steps:
adding 30.00-50.00 wt% of unsaturated lead carboxylate, 5.00-25.00 wt% of caprylic acid or pelargonic acid, 15.00-25.00 wt% of optical property modifier, 15.00-25.00 wt% of acrylamide and 2.50wt% of methacrylic acid into a container, heating, stirring and dissolving until the system is clear and transparent; adding an initiator, and after the initiator is dissolved, carrying out vacuum defoaming treatment; finally, carrying out gradient heating polymerization reaction, and cooling to room temperature after polymerization to obtain the lead-containing organic glass, wherein the gradient heating polymerization process is carried out at 55 +/-5 ℃ for 12 hours, at 80 +/-5 ℃ for 6 hours and at 100 +/-5 ℃ for 6 hours, and the temperature is reduced to the room temperature at a speed of 6-10 ℃/h after polymerization; the unsaturated lead carboxylate is any one of lead methacrylate and lead acrylate; the optical property modifier is triethoxy bisphenol A dimethacrylate.
2. The method of claim 1, wherein the octanoic acid or nonanoic acid content is 50wt% of the unsaturated lead carboxylate.
3. The method of claim 1 wherein the initiator is one or both of azobisisobutyronitrile, azobisisoheptonitrile.
4. The method according to claim 1, wherein the heating and stirring temperature is 70 ± 5 ℃ for 10-30 min.
5. The method according to claim 1, wherein the vacuum defoaming treatment time is 10 to 20 min.
6. The method of claim 1, wherein the lead-containing organic glass is effective at shielding gamma and X-rays, has a light transmittance of more than 88.10%, and an impact strength of more than 22.12 kJ/m2The flexural strength is 56.86-165.30 MPa, and the flexural modulus is 1.86-4.44 GPa.
7. High performance radiation protective lead-containing organic glass prepared by the method of any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010171254.5A CN111234099B (en) | 2020-03-12 | 2020-03-12 | High-performance radiation-proof lead-containing organic glass and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010171254.5A CN111234099B (en) | 2020-03-12 | 2020-03-12 | High-performance radiation-proof lead-containing organic glass and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111234099A CN111234099A (en) | 2020-06-05 |
| CN111234099B true CN111234099B (en) | 2021-09-03 |
Family
ID=70870192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010171254.5A Active CN111234099B (en) | 2020-03-12 | 2020-03-12 | High-performance radiation-proof lead-containing organic glass and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111234099B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113105580B (en) * | 2021-04-15 | 2022-09-02 | 扬州大学 | Radiation-resistant lead-containing transparent plastic and preparation method thereof |
| CN114736229B (en) * | 2022-04-12 | 2023-07-28 | 扬州大学 | Lead-containing organic monomer with polymerization activity and synthesis method thereof |
| CN114717746B (en) * | 2022-04-12 | 2023-07-04 | 扬州大学 | Preparation method of lead-containing radiation-proof nanofiber felt |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100823718B1 (en) * | 2006-04-13 | 2008-04-21 | 주식회사 엘지화학 | Resin Composition Containing Catalystic Precursor for Electroless Plating in Preparing Electro-Magentic Shielding Layer, Forming Method of Metallic Patten Using the Same and Metallic Pattern Formed Thereby |
| FR2920431B1 (en) * | 2007-08-29 | 2010-03-12 | Essilor Int | PROCESS FOR THE PREPARATION OF A TRANSPARENT MATERIAL OF THE THERMOSETTING POLYMER / THERMOPLASTIC POLYMER ALLOY TYPE AND ITS APPLICATION IN THE OPTICS FOR THE MANUFACTURE OF ORGANIC GLASSES. |
| CN101319025B (en) * | 2008-07-08 | 2010-12-01 | 江南大学 | Method for preparing plumbum containing radiation protection organic glass |
| CN106317787B (en) * | 2016-09-13 | 2018-08-24 | 北京市射线应用研究中心 | High-temperature-resistant epoxy resin base neutron and gamma ray shielding composite material and its preparation |
-
2020
- 2020-03-12 CN CN202010171254.5A patent/CN111234099B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111234099A (en) | 2020-06-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111234099B (en) | High-performance radiation-proof lead-containing organic glass and preparation method thereof | |
| CN111234098B (en) | High-performance radiation-proof organic glass and preparation method thereof | |
| JP6868017B2 (en) | Neutron moderator | |
| US2796411A (en) | Radiation shield | |
| US4563494A (en) | Synthetic resin composition and process for producing the same | |
| CN110867265B (en) | Flexible neutron radiation protection material and preparation method of protection article | |
| JPS6410791B2 (en) | ||
| CN105566556A (en) | Anti-radiation organic glass | |
| KR101952817B1 (en) | Concrete composite for improving neutron shielding ability | |
| CN113105580B (en) | Radiation-resistant lead-containing transparent plastic and preparation method thereof | |
| JPS5921883B2 (en) | Manufacturing method for transparent plastic molded bodies | |
| CN107533872A (en) | Flexible radioactive ray shielding material and its manufacture method comprising hydrogel | |
| CN111454393B (en) | Soft and tough lead-containing organic transparent plate and preparation method thereof | |
| CN113897526A (en) | Neutron deceleration composite material | |
| CN106554455B (en) | Anti- method X-ray radiation organic glass masterbatch and prepare organic glass of oil rub resistance | |
| KR100947528B1 (en) | Material for neutron shielding and for maintaining sub-criticality based on vinylester resin | |
| JP2003255081A (en) | Radiation shield material composition | |
| JP4883808B2 (en) | Radiation shielding material and method for producing the same, preservation solution set for production of radiation shielding material | |
| Mortazavi et al. | Production of a datolite-based heavy concrete for shielding nuclear reactors and megavoltage radiotherapy rooms | |
| CN108794678B (en) | Flame-retardant radiation-proof gadolinium-containing organic glass and preparation method thereof | |
| Smith et al. | Effect of parenteral injections of particulate matter on survival of X-irradiated animals | |
| CN106637036B (en) | A kind of coating has the electric arc spraying tubular filament material of gamma-ray radiation shielding effect | |
| CN108707205B (en) | Radiation-resistant gadolinium-containing organic glass and preparation method thereof | |
| CN109592961B (en) | High-temperature-resistant boron-strontium-containing phosphoaluminate cement-based nuclear power concrete | |
| CN102250268A (en) | Poly unsaturated olefinic acid metal salt radiation shielding material 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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |