CN104130546A - Preparation method for nuclear radiation shielding material - Google Patents
Preparation method for nuclear radiation shielding material Download PDFInfo
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- CN104130546A CN104130546A CN201410136187.8A CN201410136187A CN104130546A CN 104130546 A CN104130546 A CN 104130546A CN 201410136187 A CN201410136187 A CN 201410136187A CN 104130546 A CN104130546 A CN 104130546A
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Abstract
The invention discloses a preparation method for a nuclear radiation shielding material. On the basis of selected material samples, according to each component's content calculated by an optimized design method, and directed at the characteristics of the studied shielding composite material, a specific preparation process is determined. The process falls into four stages in time order: material preparation, curing pretreatment, material curing, and demoulding. The shielding material shielding different energy and different flux neutron-gamma mixed fields can meet the requirements of best shielding effect, excellent mechanical and thermal performance, and good anti-radiation performance. The technological method provided by the invention can realize curing molding of the material at room temperature, and is easy to realize mass production. The shielding material has the optimal shielding effect, is convenient to implement transportation engineering, and is economical and practical.
Description
Technical field
The invention belongs to Shielding Materials for Nuclear Radiation technical field, relate to a kind of preparation method of Shielding Materials for Nuclear Radiation.
Background technology
The development of international and domestic Nuclear Science and Technology cause has brought huge interests to the mankind, but also the mankind and the environment of depending on for existence thereof is brought to direct or indirect radiation hazradial bundle thereupon.How radio-protective reduces is even eliminated such harm and then promotes the development of Nuclear Science and Technology cause to play vital effect.Shielding protection is being taken on important role undoubtedly as safeguard procedures the most thoroughly, Shielding Materials for Nuclear Radiation is the most important matenal support of implementing radiation shielding, therefore, develop, develop high performance Shielding Materials for Nuclear Radiation significant to radiation proof successful implementation.
High-performance Shielding Materials for Nuclear Radiation can be widely used in all many-sides of nuclear science technology cause.As special structure material, to Nuclear power plants, under water with loss of weight, the densification of water surface nuclear power plant, high-energy particle accelerator, spacecraft, nuclear medicine diagnostic and therapeutic equipment, extraordinary radiation measurement assembly with lengthen the life etc. and will play an important role.
Chinese scholars has been carried out large quantity research to Shielding Materials for Nuclear Radiation, and main research achievements is as shown in table 1.Each shielding material in table 1 has common limitation, its material mixture ratio obtains by enumeration methodology, it is ultimate attainment that this causes every kind of material availability not perform to, process-cycle is long simultaneously, need to carry out lot of experiments examination and corresponding test examination material sample, this a large amount of labor intensive of meeting and raw material resources, comprise some rare earth resources.So, can cause the waste of serious manpower and raw material resources.
Many kinds of designing material samples of table 1 and the comparison of reference material salient features
Summary of the invention
The problem that the present invention solves is to provide a kind of preparation method of Shielding Materials for Nuclear Radiation, take epoxy resin as body material, take polyamide resin as solidifying agent, and auxiliary with quantitative thinner, interpolation has the wild phase particle of good absorption effect to neutron-gamma-rays, complete solidifying of material under normal temperature condition.
The present invention is achieved through the following technical solutions:
A preparation method for Shielding Materials for Nuclear Radiation, comprises the following steps:
1) by following quality proportioning, choose body material, solidifying agent and wild phase particle:
Epoxy resin: 1%-80%;
Polyamide resin: 1%-60%;
Epoxy propane butyl ether: 1%-10%;
Norbide: 1%-10%;
Gadolinium trioxide: 1%-15%;
Nano titanium oxide: 1%-5%;
Wolfram varbide: 1%-30%;
Lead powder: 1%-30%;
2) on selected body material, solidifying agent, wild phase material foundation, according to neutron, gamma-rays and matter interaction ultimate principle, adopt genetic algorithm to set up the shielding material constituent optimization model under different neutron-gamma fields in conjunction with MCNP software, each component concentration of shielding material is optimized to calculating, according to the component result of calculating, carries out material sample manufacture:
According to design-calculated component concentration, weigh each component, by epoxy resin and polyamide resin mixing and stirring; Add nano titanium oxide and epoxy propane butyl ether, stir; And add norbide, Gadolinium trioxide, wolfram varbide, iron powder, lead powder wild phase particle, make polyamide compoiste material;
3) solidify pre-treatment: each component raw material is fully mixed, and be pumped to vacuum tightness and no longer change;
4) material cured: the raw material solidifying after pre-treatment is put into container molding, be cured under normal temperature condition, solidify 20 hours;
5) demoulding: after solidifying, the demoulding is processed, and obtains radiation shielding material.
Described polymeric amide composite shielding material element proportioning is:
H：2.2～2.4%，B：0.6～0.9%，C：17.5～18.0%，O：5.2～5.4%，Ti：?0.04～0.1%，Gd：1.5～1.8%，W：5.0～5.5%，Pb：67～68%。
3, the preparation method of Shielding Materials for Nuclear Radiation as claimed in claim 1, is characterized in that, described polymeric amide composite shielding material element proportioning is:
H：2.4～2.5%，B：0.3～0.5%，C：18.0～19.0%，O：5.2～5.4%，Ti：0.04～0.1%，Gd：1.5～1.8%，W：12.0～13.0%，Pb：57～58%。
A preparation method for Shielding Materials for Nuclear Radiation, comprises the following steps:
1) by following quality proportioning, choose body material, solidifying agent and wild phase particle:
Epoxy resin: 1%-80%;
Polyamide resin: 1%-60%;
Epoxy propane butyl ether: 1%-10%;
Norbide: 1%-10%;
Gadolinium trioxide: 1%-15%;
Nano titanium oxide: 1%-5%;
Wolfram varbide: 1%-30%;
Lead powder: 1%-30%;
2) on selected body material, solidifying agent, wild phase material foundation, according to neutron, gamma-rays and matter interaction ultimate principle, adopt genetic algorithm to set up the shielding material constituent optimization model under different neutron-gamma fields in conjunction with MCNP software, each component concentration of shielding material is optimized to calculating, according to the component result of calculating, carries out material sample manufacture:
According to design-calculated component concentration, weigh each component, by epoxy resin and polyamide resin mixing and stirring; Add nano titanium oxide and epoxy propane butyl ether, stir; And add norbide, Gadolinium trioxide wild phase particle, make polymkeric substance Sandwich materials; Wild phase particle as above is added in mixing solutions, stir;
3) solidify pre-treatment: each component raw material is fully mixed, and be pumped to vacuum tightness and no longer change;
4) material cured: the raw material solidifying after pre-treatment is put into container molding, be cured under normal temperature condition, solidify 20 hours;
5) demoulding: after solidifying, the demoulding is processed, and obtains radiation shielding material.
Described polymkeric substance Sandwich materials is clipped in the middle of iron layer and lead layer, by thickness ratio, plays shield effectiveness.
The described shielding that comprises following three kinds of ratios:
Cake1 is: the thickness combination of iron-polymkeric substance Sandwich materials (Interlayer)-plumbous 2.5:6:1.5;
Cake2 is: the thickness combination of iron-polymkeric substance Sandwich materials-plumbous 1.5:7:1.5;
Cake3 is: the thickness combination of iron-polymkeric substance Sandwich materials-plumbous 2:7:1.
Each element mass percent of described composition polymkeric substance Sandwich materials is:
H：6～10%，
10B：0.1～0.5%，
11B：0.1～0.8%，C：50～75%，O：5～25%，Ti：0.1～3%，Gd：1～10%，N：1～15%。
Compared with prior art, the present invention has following useful technique effect:
1, take epoxy resin as body material, take polyamide resin as solidifying agent, and auxiliary with quantitative thinner, add the wild phase particle that neutron-gamma-rays is had to good absorption effect, under normal temperature condition, complete solidifying of material.Such operating procedure can complete at normal temperatures, lower to outside temperature condition requirement, is easy to large-scale production, and in addition, polymkeric substance Sandwich materials (Interlayer) density is lower, is easy to technological forming, is convenient to transportation and concrete shield engineering enforcement.
2, the advantage of optimization design: the flexible modeling of Neutron-γ ray mixed field under 1) can be in light of the circumstances; 2) according to practical situation Neutron-γ ray mixed field, the most optimum materials component that computation optimization is unique, the material sample shield effectiveness in this material component situation is best.
Table 2 provides acid anhydrides matrix material, Interlayer material, the softening temperature of polyamide compoiste material, mechanical property.Can find out that the heat resistance mechanical property of acid anhydrides matrix material is apparently higher than other material.
Table 2 shielding material main Mechanical measurement result and with the comparison of PB202 product
Accompanying drawing explanation
Fig. 1 is the shield effectiveness of the multiple material sample of design, and jxa1, jxa2 are the polyamide compoiste material of making under normal temperature technique, and Interlayer material, than jxa1, jxa2 polyamide compoiste material, has lacked the heavy metal particles such as lead, iron.Cake1 is the thickness combination of iron-polymkeric substance Sandwich materials (Interlayer)-plumbous 2.5:6:1.5, and cake2 is the thickness combination of iron-polymkeric substance Sandwich materials-plumbous 1.5:7:1.5, and cake3 is the thickness combination of iron-polymkeric substance Sandwich materials-plumbous 2:7:1.In cake series material condition of equivalent thickness situation, shield effectiveness is better as seen from Figure 1, and jxa1, jxa2 density are lower than cake material, and in stack pile, homogenous quantities situation, effect is better.
Fig. 2 is the comparison of Cake1 sample neutron rejection ratio experimental value and numerical simulation value and Multilayer Samples experimental value.
Fig. 3 is the gamma-rays absorption experiment result of Cake1 sample and the comparison of numerical simulation result.
Fig. 4 is schematic flow sheet of the present invention.
embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail, and the explanation of the invention is not limited.
The present invention be take epoxy resin as body material, take polyamide resin as solidifying agent, and auxiliary with quantitative thinner, adds the wild phase particle that neutron-gamma-rays is had to good absorption effect, completes solidifying of material under normal temperature condition.
The selected material of ambient cure technique:
1) epoxy resin: body material, moderated neutron;
2) polyamide resin: solidifying agent, moderated neutron;
3) epoxy propane butyl ether: thinner;
4) norbide: absorb neutron;
5) Gadolinium trioxide: good absorption neutron performance;
6) nano titanium oxide: reduce system solidification value, improve material irradiation stability.
By the repeatedly preparation of matrix material, for the feature of shielding composite of the present invention, determined concrete preparation flow, according to the sequencing of time, can be divided into four-stage:
A preparation method for Shielding Materials for Nuclear Radiation, comprises the following steps:
1) by following quality proportioning, choose body material, solidifying agent and wild phase particle:
Epoxy resin: 1%-80%;
Polyamide resin: 1%-60%;
Epoxy propane butyl ether: 1%-10%;
Norbide: 1%-10%;
Gadolinium trioxide: 1%-15%;
Nano titanium oxide: 1%-5%;
Wolfram varbide: 1%-30%;
Lead powder: 1%-30%;
2) on selected body material, solidifying agent, wild phase material foundation, according to neutron, gamma-rays and matter interaction ultimate principle, adopt genetic algorithm to set up the shielding material constituent optimization model under different neutron-gamma fields in conjunction with MCNP software, each component concentration of shielding material is optimized to calculating, according to the component result of calculating, carries out material sample manufacture:
According to design-calculated component concentration, weigh each component, by epoxy resin and polyamide resin mixing and stirring; Add nano titanium oxide and epoxy propane butyl ether, stir; And add norbide, Gadolinium trioxide, wolfram varbide, iron powder, lead powder wild phase particle, make polyamide compoiste material;
3) solidify pre-treatment: each component raw material is fully mixed, and be pumped to vacuum tightness and no longer change;
4) material cured: the raw material solidifying after pre-treatment is put into container molding, be cured under normal temperature condition, solidify 20 hours;
5) demoulding: after solidifying, the demoulding is processed, and obtains radiation shielding material.
And the preparation method of other Shielding Materials for Nuclear Radiation, comprise the following steps:
1) by following quality proportioning, choose body material, solidifying agent and wild phase particle:
Epoxy resin: 1%-80%;
Polyamide resin: 1%-60%;
Epoxy propane butyl ether: 1%-10%;
Norbide: 1%-10%;
Gadolinium trioxide: 1%-15%;
Nano titanium oxide: 1%-5%;
Wolfram varbide: 1%-30%;
Lead powder: 1%-30%;
2) on selected body material, solidifying agent, wild phase material foundation, according to neutron, gamma-rays and matter interaction ultimate principle, adopt genetic algorithm to set up the shielding material constituent optimization model under different neutron-gamma fields in conjunction with MCNP software, each component concentration of shielding material is optimized to calculating, according to the component result of calculating, carries out material sample manufacture:
According to design-calculated component concentration, weigh each component, by epoxy resin and polyamide resin mixing and stirring; Add nano titanium oxide and epoxy propane butyl ether, stir; And add norbide, Gadolinium trioxide wild phase particle, make polymkeric substance Sandwich materials; Wild phase particle as above is added in mixing solutions, stir;
3) solidify pre-treatment: each component raw material is fully mixed, and be pumped to vacuum tightness and no longer change;
4) material cured: the raw material solidifying after pre-treatment is put into container molding, be cured under normal temperature condition, solidify 20 hours;
5) demoulding: after solidifying, the demoulding is processed, and obtains radiation shielding material.
Described polymkeric substance Sandwich materials is clipped in the middle of iron layer and lead layer, by thickness ratio, plays shield effectiveness.
The shielding that specifically comprises following three kinds of ratios:
Cake1 is: the thickness combination of iron-polymkeric substance Sandwich materials (Interlayer)-plumbous 2.5:6:1.5;
Cake2 is: the thickness combination of iron-polymkeric substance Sandwich materials-plumbous 1.5:7:1.5;
Cake3 is: the thickness combination of iron-polymkeric substance Sandwich materials-plumbous 2:7:1.
Concrete technology flow process:
By the repeatedly preparation of matrix material, for the feature of shielding composite of the present invention, determined concrete preparation flow, according to the sequencing of time, can be divided into four-stage:
1) preparation work
1. forming materials mould inner surface is evenly smeared to silicone oil, place about 1 day, or standby at die surface lay release cloth;
2. weighed in proportion epoxy resin and polyamide resin, table 3 is proportionings of starting material solidifying agent and thinner, is smash powdered and mixes, and puts into flask, then flask is placed in to well heater and heats, until fusing completely;
Table 3 is starting material solidifying agent and thinner proportioning for experiment
3. weigh in proportion respectively norbide (B
4c), nano titanium oxide (TiO
2), Gadolinium trioxide (Gd
2o
3) and epoxy propane butyl ether etc.;
4. epoxy resin mixed and stirred with the mixing solutions of polyamide resin, then pouring nano-TiO into
2and epoxy propane butyl ether, stir;
5. by wild phase particle norbide (B
4c), Gadolinium trioxide (Gd
2o
3) add in mixing solutions.
2) material cured pre-treatment
1. all material mixing is placed in to stirrer, with the rotating speed of different gears, stirs;
2. the material being stirred is poured in vacuum suction container, is pumped to vacuum tightness and no longer changes;
3. moulding after repeating 1 and 2 two to three times, pours material in container molding into, again bleeds several times.
3) material cured
Pour the sample being stirred into previously prepd mould, be positioned over normal temperature environment and carry out ambient cure;
4) demoulding
By solidifying complete material, take out, carry out demoulding processing.
Table 4 provides the component of polyamide compoiste material.
Table 4 polymeric amide composite shielding material element proportioning
Table 5 forms each element mass percent of polymkeric substance Sandwich materials (Interlayer).
Table 5 polymkeric substance Sandwich materials element proportioning
Table 6 provides polymeric amide composite shielding material, the density of polymer-based carbon composite shielding material, softening temperature, mechanical property.
Table 6 bi-material main Mechanical measurement result
Cake1 is iron-polymkeric substance Sandwich materials (Interlayer)-lead thickness array mode of 2.5: 6: 1.5, Fig. 2 is the comparison of Cake1 sample neutron rejection ratio experimental value and numerical simulation value, and Fig. 3 is the gamma-rays absorption experiment result of Cake1 sample and the comparative result of numerical simulation result.
Claims (7)
1. a preparation method for Shielding Materials for Nuclear Radiation, is characterized in that, comprises the following steps:
1) by following quality proportioning, choose body material, solidifying agent and wild phase particle:
Epoxy resin: 1%-80%;
Polyamide resin: 1%-60%;
Epoxy propane butyl ether: 1%-10%;
Norbide: 1%-10%;
Gadolinium trioxide: 1%-15%;
Nano titanium oxide: 1%-5%;
Wolfram varbide: 1%-30%;
Lead powder: 1%-30%;
2) on selected body material, solidifying agent, wild phase material foundation, according to neutron, gamma-rays and matter interaction ultimate principle, adopt genetic algorithm to set up the shielding material constituent optimization model under different neutron-gamma fields in conjunction with MCNP software, each component concentration of shielding material is optimized to calculating, according to the component result of calculating, carries out material sample manufacture:
According to design-calculated component concentration, weigh each component, by epoxy resin and polyamide resin mixing and stirring; Add nano titanium oxide and epoxy propane butyl ether, stir; And add norbide, Gadolinium trioxide, wolfram varbide, iron powder, lead powder wild phase particle, make polyamide compoiste material;
3) solidify pre-treatment: each component raw material is fully mixed, and be pumped to vacuum tightness and no longer change;
4) material cured: the raw material solidifying after pre-treatment is put into container molding, be cured under normal temperature condition, solidify 20 hours;
5) demoulding: after solidifying, the demoulding is processed, and obtains radiation shielding material.
2. the preparation method of Shielding Materials for Nuclear Radiation as claimed in claim 1, is characterized in that, described polymeric amide composite shielding material element proportioning is:
H：2.2～2.4%，B：0.6～0.9%，C：17.5～18.0%，O：5.2～5.4%，Ti：0.04～0.1%，Gd：1.5～1.8%，W：5.0～5.5%，Pb：67～68%。
3. the preparation method of Shielding Materials for Nuclear Radiation as claimed in claim 1, is characterized in that, described polymeric amide composite shielding material element proportioning is:
H：2.4～2.5%，B：0.3～0.5%，C：18.0～19.0%，O：5.2～5.4%，Ti：0.04～0.1%，Gd：1.5～1.8%，W：12.0～13.0%，Pb：57～58%。
4. a preparation method for Shielding Materials for Nuclear Radiation, is characterized in that, comprises the following steps:
1) by following quality proportioning, choose body material, solidifying agent and wild phase particle:
Epoxy resin: 1%-80%;
Polyamide resin: 1%-60%;
Epoxy propane butyl ether: 1%-10%;
Norbide: 1%-10%;
Gadolinium trioxide: 1%-15%;
Nano titanium oxide: 1%-5%;
Wolfram varbide: 1%-30%;
Lead powder: 1%-30%;
2) on selected body material, solidifying agent, wild phase material foundation, according to neutron, gamma-rays and matter interaction ultimate principle, adopt genetic algorithm to set up the shielding material constituent optimization model under different neutron-gamma fields in conjunction with MCNP software, each component concentration of shielding material is optimized to calculating, according to the component result of calculating, carries out material sample manufacture:
According to design-calculated component concentration, weigh each component, by epoxy resin and polyamide resin mixing and stirring; Add nano titanium oxide and epoxy propane butyl ether, stir; And add norbide, Gadolinium trioxide wild phase particle, make polymkeric substance Sandwich materials; Wild phase particle as above is added in mixing solutions, stir;
3) solidify pre-treatment: each component raw material is fully mixed, and be pumped to vacuum tightness and no longer change;
4) material cured: the raw material solidifying after pre-treatment is put into container molding, be cured under normal temperature condition, solidify 20 hours;
5) demoulding: after solidifying, the demoulding is processed, and obtains radiation shielding material.
5. the preparation method of Shielding Materials for Nuclear Radiation as claimed in claim 4, is characterized in that, described polymkeric substance Sandwich materials is clipped in the middle of iron layer and lead layer, by thickness ratio, plays shield effectiveness.
6. the preparation method of Shielding Materials for Nuclear Radiation as claimed in claim 5, is characterized in that, comprises the shielding of following three kinds of ratios:
Cake1 is: the thickness combination of iron-polymkeric substance Sandwich materials (Interlayer)-plumbous 2.5:6:1.5;
Cake2 is: the thickness combination of iron-polymkeric substance Sandwich materials-plumbous 1.5:7:1.5;
Cake3 is: the thickness combination of iron-polymkeric substance Sandwich materials-plumbous 2:7:1.
7. the preparation method of Shielding Materials for Nuclear Radiation as claimed in claim 4, is characterized in that, each element mass percent of described composition polymkeric substance Sandwich materials is:
H：6～10%，
10B：0.1～0.5%，
11B：0.1～0.8%，C：50～75%，O：5～25%，Ti：0.1～3%，Gd：1～10%，N：1～15%。
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Cited By (7)
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| CN104409124A (en) * | 2014-11-26 | 2015-03-11 | 北京富迪创业科技有限公司 | High-filling composite shielding material for radiation mixing fields and preparation method of high-filling composite shielding material |
| CN105131610A (en) * | 2015-08-27 | 2015-12-09 | 江苏海龙核科技股份有限公司 | Organic-inorganic composite biological shielding material for nuclear power and preparing method thereof |
| CN106543643A (en) * | 2016-09-26 | 2017-03-29 | 安泰科技股份有限公司 | A kind of organic composite high-energy ray shielding material and preparation method thereof |
| CN107342113A (en) * | 2017-07-21 | 2017-11-10 | 中国核动力研究设计院 | A kind of resistance to irradiation inorganic mask material of high temperature resistant |
| CN107885913A (en) * | 2017-10-25 | 2018-04-06 | 中广核核电运营有限公司 | Radiation field screening concept feasible method of discrimination, device, computer equipment and storage medium |
| CN109152193A (en) * | 2018-09-19 | 2019-01-04 | 西安交通大学 | A kind of vehicle-mounted proton linac neutron source photographic system |
| CN112961467A (en) * | 2021-03-17 | 2021-06-15 | 湖北科技学院 | Neutron gamma shielding composite material and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409124A (en) * | 2014-11-26 | 2015-03-11 | 北京富迪创业科技有限公司 | High-filling composite shielding material for radiation mixing fields and preparation method of high-filling composite shielding material |
| CN105131610A (en) * | 2015-08-27 | 2015-12-09 | 江苏海龙核科技股份有限公司 | Organic-inorganic composite biological shielding material for nuclear power and preparing method thereof |
| CN106543643A (en) * | 2016-09-26 | 2017-03-29 | 安泰科技股份有限公司 | A kind of organic composite high-energy ray shielding material and preparation method thereof |
| CN106543643B (en) * | 2016-09-26 | 2019-02-01 | 安泰科技股份有限公司 | A kind of organic composite high-energy ray shielding material and preparation method thereof |
| CN107342113A (en) * | 2017-07-21 | 2017-11-10 | 中国核动力研究设计院 | A kind of resistance to irradiation inorganic mask material of high temperature resistant |
| CN107885913A (en) * | 2017-10-25 | 2018-04-06 | 中广核核电运营有限公司 | Radiation field screening concept feasible method of discrimination, device, computer equipment and storage medium |
| CN109152193A (en) * | 2018-09-19 | 2019-01-04 | 西安交通大学 | A kind of vehicle-mounted proton linac neutron source photographic system |
| CN112961467A (en) * | 2021-03-17 | 2021-06-15 | 湖北科技学院 | Neutron gamma shielding composite material and preparation method thereof |
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