CN111312422A - Flexible material with gamma ray radiation shielding function and silicon-based doped nano titanium oxide and preparation method thereof - Google Patents
Flexible material with gamma ray radiation shielding function and silicon-based doped nano titanium oxide and preparation method thereof Download PDFInfo
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- CN111312422A CN111312422A CN202010125960.6A CN202010125960A CN111312422A CN 111312422 A CN111312422 A CN 111312422A CN 202010125960 A CN202010125960 A CN 202010125960A CN 111312422 A CN111312422 A CN 111312422A
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- titanium oxide
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- 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
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- 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
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Abstract
The invention discloses a flexible material with gamma ray radiation shielding function and silica-based doped nano titanium oxide and a preparation method thereof, and the flexible material comprises the following steps: weighing silica gel A, silica gel B, tungsten powder and nano titanium oxide, stirring and mixing the silica gel A and the silica gel B uniformly, adding the tungsten powder and the nano titanium oxide, stirring uniformly, placing the mixture in a sample box, placing the sample box in a vacuum tank, vacuumizing the vacuum tank by adopting a vacuumizing mode to reduce the gas amount of materials in the sample box, and curing the materials after bubbles in the sample box disappear to obtain the flexible material with the gamma ray radiation shielding function and doped with the nano titanium oxide on the silica gel base.
Description
Technical Field
The invention relates to a flexible material of silica-based doped nano titanium oxide and a preparation method thereof, in particular to a flexible material of silica-based doped nano titanium oxide with a gamma ray radiation shielding function and a preparation method thereof.
Background
With the development of nuclear power technology, nuclear reactors need nuclear robots for operation monitoring, fault diagnosis, maintenance and the like, and the radiation irradiation environment can have adverse effects on various devices in the robots, such as lithium ion batteries and various semiconductor components. Whether a robotic manipulator or a mobile robot, the degradation of component performance can affect and even lead to failure of the overall system. For electronic components and metal materials in the robot, the irradiation of gamma rays can accelerate the aging of the electronic components, influence the service life and the working stability of the robot and even cause the direct scrapping of the components. For movable parts in a nuclear robot, due to the fact that the size and the load are large, concrete with huge mass and size cannot be used for shielding gamma rays, the robot cannot reliably run for a long time in an irradiation environment, adaptability is poor, and the degree of freedom is small.
The radiation shielding is an important aspect of nuclear safety, nuclear reactors can generate various kinds of radiation when in operation, wherein α, β, gamma rays, X rays, proton beams, neutron beams and the like exist, gamma rays are one of rays which are harmful to environmental radiation, and therefore, a radiation shielding material is necessary, the gamma ray radiation shielding material mainly considers three effects brought by the gamma rays at present and can be divided into an electron pair effect, a Compton scattering effect and a photoelectric effect according to the high and low energy of the gamma rays.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a flexible material which has a gamma ray radiation shielding function and is doped with nano titanium oxide on a silicon gum base and a preparation method thereof.
In order to achieve the aim, the flexible material with the gamma ray radiation shielding function, which is doped with the nano titanium oxide on the silica base, is prepared from silica gel A, silica gel B, tungsten powder and nano titanium oxide, wherein the particle size of the nano titanium oxide is 5-40 nm.
The mass percentages of the silica gel A, the silica gel B, the tungsten powder and the nano titanium oxide are 10: 10: (78-79.9): (0.1-2).
The densities of silica gel A and silica gel B are 1.25-1.35g/cm3。
The granularity of the tungsten powder is 500 meshes, and the purity of the tungsten powder is more than or equal to 99.95 percent.
The purity of the nano titanium oxide is 99.3 wt%, and the specific surface area is 284.1m2/g。
The preparation method of the flexible material with the gamma ray radiation shielding function and the silica-based doped nano titanium oxide comprises the following steps:
weighing silica gel A, silica gel B, tungsten powder and nano titanium oxide, stirring and mixing the silica gel A and the silica gel B uniformly, adding the tungsten powder and the nano titanium oxide, stirring uniformly, placing the mixture in a sample box, placing the sample box in a vacuum tank, vacuumizing the vacuum tank by adopting a vacuumizing mode to reduce the amount of gas of materials in the sample box, and curing after bubbles of the materials in the sample box disappear to obtain the flexible material with the gamma ray radiation shielding function and the silica-based doped nano titanium oxide.
Stirring and mixing the silica gel A and the silica gel B uniformly, wherein the stirring time is 10 min;
adding tungsten powder and nano titanium oxide, stirring for 10min, and placing in a sample box;
the cooling time is 24-36 h.
The invention has the following beneficial effects:
according to the flexible material with the gamma ray radiation shielding function and the preparation method thereof, tungsten powder and nano titanium oxide are uniformly distributed in silica gel during specific operation, the silica gel, the tungsten powder and the nano titanium oxide are bonded through internal van der Waals force, so that the overall gamma ray shielding performance of the material is improved, and when the flexible material is used, the attenuation of gamma rays is realized through photoelectric absorption and Compton scattering; meanwhile, the tungsten powder and the nano titanium oxide are uniformly wrapped by a branched chain structure in the silica gel molecule; in addition, the particle size of the nano titanium oxide is between 5 and 40nm, and the nano titanium oxide can be effectively filled in pores in the material, so that the good tensile property of the composite material is ensured, and the tensile rate is between 264.51 and 471.24 percent; finally, the gamma ray shielding coefficient of the material with the thickness of 2cm is tested to be between 0.64 and 0.65. In addition, when the material is prepared, the tungsten powder and the nano titanium oxide are added into the silica gel and then are stirred and mixed uniformly, so that the tungsten powder and the nano titanium oxide can be uniformly dispersed, the defect that the traditional silica gel is not resistant to irradiation is overcome, and the gamma-ray irradiation resistance of the material is greatly improved; the tungsten powder and the nano titanium oxide improve the gamma ray attenuation performance of the composite material, and the silica gel matrix has the functions of reducing the weight of the composite material, transferring load and stress, so that the composite material has elasticity, ductility and processability. The flexible material prepared by the invention can be used for manufacturing radioactive medical equipment and flexible nuclear robots, and can be used for nuclear environment robots and nuclear facility maintenance, has multiple excellent performances of good tensile property, gamma ray shielding, radiation resistance and the like, and has good practical value in the field of gamma ray radiation protection.
Drawings
Fig. 1 is a surface topography diagram of a flexible material of a silica-based doped nano titanium oxide with a gamma ray radiation shielding function according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, the flexible material of silica-based doped nano titanium oxide with gamma ray radiation shielding function of the present invention is prepared from silica gel a, silica gel B, tungsten powder and nano titanium oxide, wherein the particle size of the nano titanium oxide is 5-40 nm.
The mass percentages of the silica gel A, the silica gel B, the tungsten powder and the nano titanium oxide are 10: 10: (78-79.9): (0.1-2).
The densities of silica gel A and silica gel B are 1.25-1.35g/cm3。
The granularity of the tungsten powder is 500 meshes, and the purity of the tungsten powder is more than or equal to 99.95 percent.
The purity of the nano titanium oxide is 99.3 wt%, and the specific surface area is 284.1m2/g。
The preparation method of the flexible material with the gamma ray radiation shielding function and the silica-based doped nano titanium oxide comprises the following steps:
weighing silica gel A, silica gel B, tungsten powder and nano titanium oxide, stirring and mixing the silica gel A and the silica gel B uniformly, adding the tungsten powder and the nano titanium oxide, stirring uniformly, placing the mixture in a sample box, placing the sample box in a vacuum tank, vacuumizing the vacuum tank by adopting a vacuumizing mode to reduce the amount of gas of materials in the sample box, and curing after bubbles of the materials in the sample box disappear to obtain the flexible material with the gamma ray radiation shielding function and the silica-based doped nano titanium oxide.
Stirring and mixing the silica gel A and the silica gel B uniformly, wherein the stirring time is 10 min;
adding tungsten powder and nano titanium oxide, stirring for 10min, and placing in a sample box;
the curing time is 24-36 h.
Example one
The flexible material with the gamma ray radiation shielding function and the silica-based doped nano-titanium oxide is prepared from silica gel A, silica gel B, tungsten powder and nano-titanium oxide, wherein the particle size of the nano-titanium oxide is 5-40 nm.
The mass percentages of the silica gel A, the silica gel B, the tungsten powder and the nano titanium oxide are 10: 10: 79.9: 0.1.
the densities of silica gel A and silica gel B were both 1.25g/cm3。
The granularity of the tungsten powder is 500 meshes, and the purity of the tungsten powder is more than or equal to 99.95 percent.
The purity of the nano titanium oxide is 99.3 wt%, and the specific surface area is 284.1m2/g。
The preparation method of the flexible material with the gamma ray radiation shielding function and the silica-based doped nano titanium oxide comprises the following steps:
weighing silica gel A, silica gel B, tungsten powder and nano titanium oxide, stirring and mixing the silica gel A and the silica gel B uniformly, adding the tungsten powder and the nano titanium oxide, stirring uniformly, placing the mixture in a sample box, placing the sample box in a vacuum tank, vacuumizing the vacuum tank by adopting a vacuumizing mode to reduce the amount of gas of materials in the sample box, and curing after bubbles of the materials in the sample box disappear to obtain the flexible material with the gamma ray radiation shielding function and the silica-based doped nano titanium oxide.
Stirring and mixing the silica gel A and the silica gel B uniformly, wherein the stirring time is 10 min;
adding tungsten powder and nano titanium oxide, stirring for 10min, and placing in a sample box;
the curing time is 24-36 h.
Through testing, the tensile rate of the flexible material with the gamma ray radiation shielding function and the silica-based doped nano titanium oxide prepared by the embodiment is 471.24%.
Example two
The flexible material with the gamma ray radiation shielding function and the silica-based doped nano-titanium oxide is prepared from silica gel A, silica gel B, tungsten powder and nano-titanium oxide, wherein the particle size of the nano-titanium oxide is 5-40 nm.
The mass percentages of the silica gel A, the silica gel B, the tungsten powder and the nano titanium oxide are 10: 10: 79.5: 0.5.
the densities of silica gel A and silica gel B were both 1.35g/cm3。
The granularity of the tungsten powder is 500 meshes, and the purity of the tungsten powder is more than or equal to 99.95 percent.
The purity of the nano titanium oxide is 99.3 wt%, and the specific surface area is 284.1m2/g。
The preparation method of the flexible material with the gamma ray radiation shielding function and the silica-based doped nano titanium oxide comprises the following steps:
weighing silica gel A, silica gel B, tungsten powder and nano titanium oxide, stirring and mixing the silica gel A and the silica gel B uniformly, adding the tungsten powder and the nano titanium oxide, stirring uniformly, placing the mixture in a sample box, placing the sample box in a vacuum tank, vacuumizing the vacuum tank by adopting a vacuumizing mode to reduce the amount of gas of materials in the sample box, and curing after bubbles of the materials in the sample box disappear to obtain the flexible material with the gamma ray radiation shielding function and the silica-based doped nano titanium oxide.
Stirring and mixing the silica gel A and the silica gel B uniformly, wherein the stirring time is 10 min;
adding tungsten powder and nano titanium oxide, stirring for 10min, and placing in a sample box;
the curing time is 24-36 h.
Through testing, the tensile rate of the flexible material with the gamma ray radiation shielding function and the silica-based doped nano titanium oxide prepared by the embodiment is 496.61%.
EXAMPLE III
The flexible material with the gamma ray radiation shielding function and the silica-based doped nano-titanium oxide is prepared from silica gel A, silica gel B, tungsten powder and nano-titanium oxide, wherein the particle size of the nano-titanium oxide is 5-40 nm.
The mass percentages of the silica gel A, the silica gel B, the tungsten powder and the nano titanium oxide are 10: 10: 79.0: 1.
the densities of silica gel A and silica gel B were 1.3g/cm3。
The granularity of the tungsten powder is 500 meshes, and the purity of the tungsten powder is more than or equal to 99.95 percent.
The purity of the nano titanium oxide is 99.3 wt%, and the specific surface area is 284.1m2/g。
The preparation method of the flexible material with the gamma ray radiation shielding function and the silica-based doped nano titanium oxide comprises the following steps:
weighing silica gel A, silica gel B, tungsten powder and nano titanium oxide, stirring and mixing the silica gel A and the silica gel B uniformly, adding the tungsten powder and the nano titanium oxide, stirring uniformly, placing the mixture in a sample box, placing the sample box in a vacuum tank, vacuumizing the vacuum tank by adopting a vacuumizing mode to reduce the amount of gas of materials in the sample box, and curing after bubbles of the materials in the sample box disappear to obtain the flexible material with the gamma ray radiation shielding function and the silica-based doped nano titanium oxide.
Stirring and mixing the silica gel A and the silica gel B uniformly, wherein the stirring time is 10 min;
adding tungsten powder and nano titanium oxide, stirring for 10min, and placing in a sample box;
the curing time is 24-36 h.
Through testing, the tensile rate of the flexible material with the gamma ray radiation shielding function and the silica-based doped nano titanium oxide prepared by the embodiment is 392.52%.
Example four
The flexible material with the gamma ray radiation shielding function and the silica-based doped nano-titanium oxide is prepared from silica gel A, silica gel B, tungsten powder and nano-titanium oxide, wherein the particle size of the nano-titanium oxide is 5-40 nm.
The mass percentages of the silica gel A, the silica gel B, the tungsten powder and the nano titanium oxide are 10: 10: 78: 2.
the densities of silica gel A and silica gel B were both 1.28g/cm3。
The granularity of the tungsten powder is 500 meshes, and the purity of the tungsten powder is more than or equal to 99.95 percent.
The purity of the nano titanium oxide is 99.3 wt%, and the specific surface area is 284.1m2/g。
The preparation method of the flexible material with the gamma ray radiation shielding function and the silica-based doped nano titanium oxide comprises the following steps:
weighing silica gel A, silica gel B, tungsten powder and nano titanium oxide, stirring and mixing the silica gel A and the silica gel B uniformly, adding the tungsten powder and the nano titanium oxide, stirring uniformly, placing the mixture in a sample box, placing the sample box in a vacuum tank, vacuumizing the vacuum tank by adopting a vacuumizing mode to reduce the amount of gas of materials in the sample box, and curing after bubbles of the materials in the sample box disappear to obtain the flexible material with the gamma ray radiation shielding function and the silica-based doped nano titanium oxide.
Stirring and mixing the silica gel A and the silica gel B uniformly, wherein the stirring time is 10 min;
adding tungsten powder and nano titanium oxide, stirring for 10min, and placing in a sample box;
the curing time is 24-36 h.
Through testing, the tensile rate of the flexible material with the gamma ray radiation shielding function and the silica-based doped nano titanium oxide prepared by the embodiment is 264.51%.
Claims (7)
1. The flexible material with the gamma ray radiation shielding function and the silica-based doped nano-titanium oxide is characterized by being prepared from silica gel A, silica gel B, tungsten powder and nano-titanium oxide, wherein the particle size of the nano-titanium oxide is 5-40 nm.
2. The flexible silica-based nano-titania-doped material with gamma-ray radiation shielding function of claim 1, wherein the mass percentages of silica A, silica B, tungsten powder and nano-titania are 10: 10: (78-79.9): (0.1-2).
3. The flexible material of claim 1, wherein the densities of silica gel A and silica gel B are 1.25-1.35g/cm3。
4. The flexible material of claim 1, wherein the particle size of tungsten powder is 500 mesh, and the purity of tungsten powder is greater than or equal to 99.95%.
5. The flexible material of claim 1, wherein the purity of the nano-titanium oxide is 99.3 wt%, and the specific surface area is 284.1m2/g。
6. The method for preparing the flexible material of the silica-based doped nano titanium oxide with the gamma ray radiation shielding function of claim 1, is characterized by comprising the following steps:
weighing silica gel A, silica gel B, tungsten powder and nano titanium oxide, stirring and mixing the silica gel A and the silica gel B uniformly, adding the tungsten powder and the nano titanium oxide, stirring uniformly, placing the mixture in a sample box, placing the sample box in a vacuum tank, vacuumizing the vacuum tank by adopting a vacuumizing mode to reduce the amount of gas of materials in the sample box, and curing after bubbles of the materials in the sample box disappear to obtain the flexible material with the gamma ray radiation shielding function and the silica-based doped nano titanium oxide.
7. The method for preparing the flexible material doped with nano titanium oxide and based on the silica gel with the gamma-ray radiation shielding function of claim 6, wherein the silica gel A and the silica gel B are uniformly stirred and mixed, wherein the stirring time is 10 min;
adding tungsten powder and nano titanium oxide, stirring for 10min, and placing in a sample box;
the curing time is 24-36 h.
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| CN101385091A (en) * | 2004-12-20 | 2009-03-11 | 全盛研究与开发公司 | Radiation detectable and protective articles |
| US20090254171A1 (en) * | 2003-11-14 | 2009-10-08 | Tundra Compsites Llc | Enhanced property metal polymer composite |
| CN208622446U (en) * | 2018-08-31 | 2019-03-19 | 中国工程物理研究院核物理与化学研究所 | Neutron-gamma mixing field flexible compound safeguard structure |
| CN110041707A (en) * | 2019-05-14 | 2019-07-23 | 深圳市鼎海新材料技术有限公司 | A kind of flexible pressure-resistant buoyant material and preparation method thereof |
| CN110828019A (en) * | 2019-11-29 | 2020-02-21 | 西安交通大学 | Silica gel-based flexible shielding material for gamma ray shielding and preparation method thereof |
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- 2020-02-27 CN CN202010125960.6A patent/CN111312422A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090254171A1 (en) * | 2003-11-14 | 2009-10-08 | Tundra Compsites Llc | Enhanced property metal polymer composite |
| EP2270085A1 (en) * | 2003-11-14 | 2011-01-05 | Wild River Consulting Group, LLC | Metal polymer composite, a method for its extrusion and shaped articles made therefrom |
| CN101385091A (en) * | 2004-12-20 | 2009-03-11 | 全盛研究与开发公司 | Radiation detectable and protective articles |
| CN208622446U (en) * | 2018-08-31 | 2019-03-19 | 中国工程物理研究院核物理与化学研究所 | Neutron-gamma mixing field flexible compound safeguard structure |
| CN110041707A (en) * | 2019-05-14 | 2019-07-23 | 深圳市鼎海新材料技术有限公司 | A kind of flexible pressure-resistant buoyant material and preparation method thereof |
| CN110828019A (en) * | 2019-11-29 | 2020-02-21 | 西安交通大学 | Silica gel-based flexible shielding material for gamma ray shielding and preparation method thereof |
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Application publication date: 20200619 |