CN104103330A - Nuclear radiation shielding material - Google Patents
Nuclear radiation shielding material Download PDFInfo
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- CN104103330A CN104103330A CN201410136190.XA CN201410136190A CN104103330A CN 104103330 A CN104103330 A CN 104103330A CN 201410136190 A CN201410136190 A CN 201410136190A CN 104103330 A CN104103330 A CN 104103330A
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- nuclear radiation
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- polyamide
- epoxy resin
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Abstract
The invention discloses a nuclear radiation shielding material, which uses epoxy resin as a base material, is complemented by acid anhydride or polyamide resin as a curing agent, and is assisted with a diluent to complete the curing of material. The material component is calculated by an optimized algorithm for neutron-gamma rays, and the shielding effect of material is the best under the compound condition. The polymeric interlayer material is easily molded by a process due to low density, and the polyamide composite shielding material is convenient for mass production because of being cured under normal temperature conditions; the acid anhydride composite shielding material is molded under high temperature conditions, and has temperature tolerance of higher than 200 DEG C and excellent mechanical properties.
Description
Technical field
The invention belongs to nuclear radiation shield technical field, relate to a kind 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 hazard thereupon.How radiation protection 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 shield, 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 station, under water with loss of weight, the densification of water surface nuclear power unit, 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 can a large amount of labor intensive and raw material resources, comprises 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 main performance
Summary of the invention
The problem that the present invention solves is to provide a kind of Shielding Materials for Nuclear Radiation, the component of material is according to ray and matter interaction ultimate principle, calculate for specific neutron-gamma field optimization in conjunction with software modeling by mathematical method, calculate by such optimization, can obtain each material component under shield effectiveness optimal situation; Its process is taking epoxy resin as matrix material, and being aided with acid anhydrides or polyamide is hardening agent, and auxiliary with thinning agent, completes solidifying of material.
The present invention is achieved through the following technical solutions:
A kind of Shielding Materials for Nuclear Radiation, such material is polymkeric substance Sandwich materials, in massfraction, is made up of following feed composition:
Epoxy resin: 1%-80%;
Polyamide: 1%-60%;
Epoxy propane butyl ether: 1%-10%;
Boron carbide: 1%-10%;
Gadolinium sesquioxide: 1%-15%;
Nano titanium oxide: 1%-5%.
In massfraction, described polymkeric substance Sandwich materials component comprises:
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%。
The density of described polymkeric substance Sandwich materials is 1～3gcm
-3.
Described being wrapped in polymkeric substance Sandwich materials as intermediate course between iron and lead, for different neutron-gamma fields, iron-polymkeric substance Sandwich materials-lead thickness than scope at 0.5-6:1-8:0.1-3.
A kind of Shielding Materials for Nuclear Radiation, such material is polyamide composite shielding material, in massfraction, is made up of following feed composition:
Epoxy resin: 10%-80%;
Polyamide: 10%-60%;
Epoxy propane butyl ether: 1%-10%;
Boron carbide: 1%-10%;
Gadolinium sesquioxide: 1%-10%;
Nano titanium oxide: 1%-5%;
Iron powder: 1%-60%;
Tungsten carbide: 1%-30%;
Lead powder: 1%-30%.
Described polyamide 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%。
Described polyamide 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 kind of Shielding Materials for Nuclear Radiation, such material is acid anhydrides composite shielding material, in massfraction, is made up of following feed composition:
Epoxy resin: 1%-80%;
Pyromellitic acid anhydride: the 15%-25% of epoxy resin;
Maleic anhydride: the 15%-25% of epoxy resin;
Epoxy propane butyl ether: 1%～10%;
Boron carbide: 1%-10%;
Gadolinium sesquioxide: 1%-10%;
Nano titanium oxide: 1%-5%;
Iron powder: 1%-60%;
Tungsten carbide: 1%-90%;
Lead powder: 1%-90%.
Described acid anhydrides composite shielding material proportioning is:
H：1.0～10.0%，
10B：0.1～5.0%，
11B：0.1～15.0%，C：1.0～10.0%，O：0.1～15.1%，Ti：0.1～0.9%，W：0.1～10.0%，Pb：1.0～95.0%。
Compared with prior art, the present invention has following useful technique effect:
Shielding Materials for Nuclear Radiation provided by the invention, its material component calculates through optimized algorithm for neutron-gamma-rays, shield effectiveness the best of material in such component situation.Wherein polymkeric substance Sandwich materials (Interlayer) density is lower, be easy to technological forming, be convenient to transport and concrete shield engineering enforcement, heat resistance is more than 140 DEG C, anti-radiation performance is better than polyvinyl material 3-6 doubly, can long service under Elevated temperature irradiation environment; Polyamide composite shielding material can solidify under normal temperature condition, is convenient to large-scale production; Acid anhydrides composite shielding material is at hot conditions compacted under, and its heat resistance is higher than 200 DEG C, mechanical property excellence.
Further, adopt laminated shield, be wrapped in Interlayer as intermediate course between iron and lead.Such structure is convenient to engineering construction, convenient disassembly, and iron, lead is that cheapness is conveniently obtained material, this need produce lightweight polymeric Sandwich materials, greatly conservation consumption, haulage time expense etc.In addition, internal layer iron can do shielding material, can play again the effect of supporting construction, and this high-effectization for shield is useful.
Table 3 provides Interlayer material, polyamide material, the softening point of acid anhydrides material, mechanical property.
Table 2 shielding material main Mechanical measurement result and with the comparison of PB202 product
Brief description of the drawings
Fig. 1 is some material samples and the contrast of reference material shielding properties, wherein 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, and cake3 is the thickness combination of iron-polymkeric substance Sandwich materials-plumbous 2:7:1.Jxa1, jxa2 are the polyamide compoiste material of two kinds of different components, and pb6 is acid anhydrides compound substance, are lead-boron polythene, XP3 material, concrete, iron, lead etc. with reference to shielding material.
The comparison of Fig. 2 Cake1 sample neutron attenuation coefficient experiment value and numerical simulation value and Multilayer Samples experiment value;
The gamma-rays absorption experiment result of Fig. 3 Cake1 sample and the comparison of numerical simulation result.
Fig. 4 is the shield effectiveness figure under Cake1, Cake2, Cake3 different-thickness.
embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail, and the explanation of the invention is not limited.
1) polymkeric substance Sandwich materials (Interlayer)
Adopt taking epoxy resin as matrix material, taking polyamide as hardening agent, and auxiliary with thinning agent, under normal temperature condition, complete solidifying of material, manufacture experimently out polymkeric substance Sandwich materials sample.As following table 3 forms each element mass percent of polyester Sandwich materials.
Table 3 polymkeric substance Sandwich materials component
Choosing and proportioning (massfraction) of each composition material
Epoxy resin: 1%-80%;
Polyamide: 1%-60%;
Boron carbide: 1%-10%;
Gadolinium sesquioxide: 1%-15%;
Nano titanium oxide: 1%-5%.
2) Cake series material
Manufacturing experimently out on the basis of polymkeric substance Sandwich materials, in order to realize better the stability of shield effectiveness and shield structure, proposing laminated shield here, be wrapped in Interlayer as intermediate course between iron and lead.Table 4 has provided the series material of Cake1, Cake2, tri-kinds of thickness proportion of Cake3, and three kinds of equivalent densities are respectively 3.836gcm
-3, 4.01gcm
-3and 4.554gcm
-3sandwich-plumbous point layer component of iron-polymeric material of left and right.
Sandwich-plumbous lift height ratio of table 4 iron-polymeric material
In Fig. 4, provide the shield effectiveness under Cake1, Cake2, Cake3 different-thickness, as seen from the figure.The shield effectiveness of Cake1 is due to other many materials,
3) polyamide composite shielding material
Adopt taking epoxy resin as matrix material, taking polyamide as hardening agent, and auxiliary with quantitative thinning agent, complete solidifying of material under certain condition, manufacture experimently out polymkeric substance Sandwich materials sample.As following table 5 forms each element mass percent of polyamide composite shielding material.
Table 5 polyamide composite shielding material element proportioning
Each composition material component proportion (massfraction)
Epoxy resin: 10%-80%;
Polyamide: 10%-60%;
Boron carbide: 1%-10%;
Gadolinium sesquioxide: 1%-10%;
Nano titanium oxide: 1%-5%;
Iron powder: 1%-60%;
Tungsten carbide: 1%-30%;
Lead powder: 1%-30%.
With respect to polymkeric substance Sandwich materials, polyamide compoiste material has more lead powder, iron powder, these two kinds of components can with fast neutron generation inelastic scattering, fast neutron energy is reduced to below protium generation elastic scattering threshold energy, simultaneously lead powder, iron powder have excellent gamma ray shielding effect.
4) acid anhydrides composite shielding material
Acid anhydrides type composite shielding material, mainly taking epoxy resin as matrix material, taking acid anhydrides as hardening agent, and is assisted with quantitative thinning agent, completes solidifying of material under hot conditions.Table 6 provides acid anhydrides composite shielding material proportioning.
Table 6 acid anhydrides composite shielding material proportioning
Each composition material component proportion (massfraction)
Epoxy resin: 1%-80%;
Pyromellitic acid anhydride: the 15%-25% of epoxy resin;
Maleic anhydride: the 15%-25% of epoxy resin;
Epoxy propane butyl ether: 1%～10%;
Boron carbide: 1%-10%;
Gadolinium sesquioxide: 1%-10%;
Nano titanium oxide: 1%-5%;
Iron powder: 1%-60%;
Tungsten carbide: 1%-90%;
Lead powder: 1%-90%.
Acid anhydrides composite material by adopting pyromellitic dianhydride, maleic anhydride are hardening agent, than polyamide compoiste material, are mainly reflected in curing process difference, and acid anhydrides compound substance completes material cured under hot conditions, and it has higher heat resistance.
Table 7 be taking polymer matrix composite as sandwich cake series samples, the shield effectiveness of polyamide compoiste material (jxa1, jxa2), acid anhydrides compound substance (Pb6), be respectively thickness and the quality of material therefor while being reduced to source accumulated dose equivalent 1/100, and provide heat resisting temperature and anti-radiation performance index.The source shielding is fission source.
The main performance of table 7 series material
Can be found out by table, while being reduced to source accumulated dose equivalent 1/100, the thickness that cake series samples is used and quality are all minimum, secondly polyamide compoiste material (jxa1, jxa2), other material embodies very large advantage at shield effectiveness, shielding material weight used, heat resisting temperature, anti-radiation performance on year-on-year basis.
Claims (9)
1. a Shielding Materials for Nuclear Radiation, is characterized in that, such material is polymkeric substance Sandwich materials, in massfraction, is made up of following feed composition:
Epoxy resin: 1%-80%;
Polyamide: 1%-60%;
Epoxy propane butyl ether: 1%-10%;
Boron carbide: 1%-10%;
Gadolinium sesquioxide: 1%-15%;
Nano titanium oxide: 1%-5%.
2. Shielding Materials for Nuclear Radiation as claimed in claim 1, is characterized in that, in massfraction, described polymkeric substance Sandwich materials element proportioning comprises:
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%。
3. Shielding Materials for Nuclear Radiation as claimed in claim 2, is characterized in that, the density of described polymkeric substance Sandwich materials is 1～3gcm
-3.
4. Shielding Materials for Nuclear Radiation as claimed in claim 1, it is characterized in that, be wrapped in polymkeric substance Sandwich materials as intermediate course between iron and lead, for different neutron-gamma fields, iron-polymkeric substance Sandwich materials-lead thickness than scope at 0.5-6:1-8:0.1-3.
5. a Shielding Materials for Nuclear Radiation, is characterized in that, such material is polyamide composite shielding material, in massfraction, is made up of following feed composition:
Epoxy resin: 10%-80%;
Polyamide: 10%-60%;
Epoxy propane butyl ether: 1%-10%;
Boron carbide: 1%-10%;
Gadolinium sesquioxide: 1%-10%;
Nano titanium oxide: 1%-5%;
Iron powder: 1%-60%;
Tungsten carbide: 1%-30%;
Lead powder: 1%-30%.
6. Shielding Materials for Nuclear Radiation as claimed in claim 5, is characterized in that, polyamide 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%。
7. Shielding Materials for Nuclear Radiation as claimed in claim 5, is characterized in that, polyamide 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%。
8. a Shielding Materials for Nuclear Radiation, is characterized in that, such material is acid anhydrides composite shielding material, in massfraction, is made up of following feed composition:
Epoxy resin: 1%-80%;
Pyromellitic acid anhydride: the 15%-25% of epoxy resin;
Maleic anhydride: the 15%-25% of epoxy resin;
Epoxy propane butyl ether: 1%～10%;
Boron carbide: 1%-10%;
Gadolinium sesquioxide: 1%-10%;
Nano titanium oxide: 1%-5%;
Iron powder: 1%-60%;
Tungsten carbide: 1%-90%;
Lead powder: 1%-90%.
9. Shielding Materials for Nuclear Radiation as claimed in claim 8, is characterized in that, acid anhydrides composite shielding material proportioning is:
H：1.0～10.0%，
10B：0.1～5.0%，
11B：0.1～15.0%，C：1.0～10.0%，O：0.1～15.1%，Ti：0.1～0.9%，W：0.1～10.0%，Pb：1.0～95.0%。
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Cited By (4)
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| CN105647122A (en) * | 2016-03-22 | 2016-06-08 | 苏州捷德瑞精密机械有限公司 | Radiation shielding composite material and preparation method thereof |
| CN106128537A (en) * | 2016-07-29 | 2016-11-16 | 刘世超 | A kind of radioprotective red copper stereotype |
| WO2021242186A1 (en) * | 2020-05-23 | 2021-12-02 | Turi̇ng Ki̇mya Endüstri̇ Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ | A functional composite and a method for preparing thereof |
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Application publication date: 20141015 |