CN104744945B - Neutron shielding material with anti-flaming thermal-insulation performance and preparation method thereof - Google Patents
Neutron shielding material with anti-flaming thermal-insulation performance and preparation method thereof Download PDFInfo
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- CN104744945B CN104744945B CN201510128412.8A CN201510128412A CN104744945B CN 104744945 B CN104744945 B CN 104744945B CN 201510128412 A CN201510128412 A CN 201510128412A CN 104744945 B CN104744945 B CN 104744945B
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Abstract
The present invention discloses a kind of neutron shielding material with anti-flaming thermal-insulation performance and preparation method thereof, and the material is made up of methyl ethylene silica gel, neutron absorber material, anti-flaming function filler, heat insulating function filler, vulcanizing agent double 25 and powder surface modifier；Its preparation method is after being plasticated in double two or the five addition mills of methyl ethylene silica gel and vulcanizing agent, with by banburying in neutron absorber material, anti-flaming function filler, heat insulating function filler, the public addition vacuum banbury of powder surface modifier mixed liquor, banburying product is finally added into vulcanizing press, that is, obtains the neutron shielding material with anti-flaming thermal-insulation performance；The material has the material of thermal neutron shielding properties, with good pliability, fire resistance, heat-proof quality, mechanical strength, can not only meet complex-shaped nuclear instrument equipment perimeter defense, is also that good NEUTRON PROTECTION takes core material.
Description
Technical field
The present invention relates to a kind of neutron shielding material with anti-flaming thermal-insulation performance and preparation method thereof, belong to nuclear radiation and prevent
Protector for collar domain, Shielding Materials for Nuclear Radiation preparing technical field.
Technical background
As Application of Nuclear Technology is in terms of energy-conserving and environment-protective, resources observation, RADIATION PROCESSING, medical diagnosis and national defense and military
More and more important effect is played, the number of radioactivity practitioner also rises therewith.But bring convenient and enjoy
While, various rays also also bring harm to the mankind to a certain extent, therefore, and reduction practitioner lives in all kinds of radioactivity
Occupational exposure level in dynamic, it is ensured that the life and health of radioactivity practitioner is particularly important.
Conventional neutron radiation protection is taken using multilayer NEUTRON PROTECTION fiber cloth as main material, and weight is big, flexible poor, neutron screen
Cover ability weak and without fire-retardant, heat-proof quality, it is impossible to which emergency personnel is for being likely to occur fire feelings under the conditions of meeting nuclear accident
The requirement of shelter of condition；The high molecular polymer shielding material of conventional rigid can not arbitrarily change with context size, equipment profile, and
Do not possess fire resistance, be that nuclear equipment protected working brings certain difficulty and risk.Therefore, develop a kind of with anti-flaming thermal-insulation
The neutron shielding material of energy, it has also become this area technical barrier urgently to be resolved hurrily.
The content of the invention
In order to solve the above problems, the invention provides it is a kind of by matrix of methyl ethylene silica gel have thermal neutron screen
The material of performance is covered, it has good pliability, fire resistance, heat-proof quality, mechanical strength, with thermal neutron shielding properties
Material, it has good pliability, fire resistance, heat-proof quality, mechanical strength, what the present invention was realized in：
A kind of neutron shielding material with anti-flaming thermal-insulation performance, concrete component is as follows, in terms of mass parts：Methyl ethylene
100 parts of silica gel, 30-90 parts of neutron absorber material, 15.8-48 parts of anti-flaming function filler, 2.7-8.2 parts of heat insulating function filler,
Vulcanizing agent is double 25 0.5 ~ 3 parts,
1 ~ 5 part of powder surface modifier；Wherein, the neutron absorber material is Sm2O3、Gd2O3, LiF or B4One in C
Plant or a variety of；The anti-flaming function filler is the one or more in aluminium hydroxide, magnesium hydroxide, Firebrake ZB or red phosphorus；It is described
Heat insulating function filler is hollow beads；
The powder surface modifier is coupling agent KH-540, coupling agent KH-550, aminopropyl trimethoxysilane, coupling
Agent D-90 one or more therein.
Further, in the present invention, the hollow beads are TiO2Hollow beads, SiO2Hollow beads, Al2O3Hollow beads
Or the one or more in glass hollow microballon.
Further, in the present invention, the methyl ethylene silica gel hardness is 5HA.
Further, in the present invention, the neutron absorber material, anti-flaming function filler, the particle diameter of heat insulating function filler are
2.5um~50um。
The preparation method of the neutron shielding material with anti-flaming thermal-insulation performance, is comprised the following steps that as described herein：
（1）It is 45rpm, 50 DEG C of double roller spacing 2mm, temperature 30- to adjust two-roll mill rotating speed, adds methyl ethylene
Silica gel is plasticated 3-5min, is added vulcanizing agent double 25 and is continued the 10-15min that plasticates；
（2）After neutron absorber material, anti-flaming function filler, heat insulating function filler, powder surface modifier are mixed, plus
Enter the deionized water of their 0.3-0.5 times of gross masses, 1-1.5h is reacted at a temperature of 30-50 DEG C, obtain functional stuffing reaction solution；
（3）The functional stuffing reaction solution that plasticate product and the step 2 that step 1 is obtained are obtained is added in vacuum banbury,
Banburying 20-30min at a temperature of 105-115 DEG C, obtains silica gel based mixtures；
（5）Plate temperature is 170-190 DEG C above and below vulcanizing press, adds the silica gel based mixtures for obtaining step 3,10-
15MPa press cure 15-20min, obtain the neutron shielding material with anti-flaming thermal-insulation performance after cooling.
The present invention is plasticated by silica gel and vulcanizing agent, functional stuffing surface is modified, silica gel and functional stuffing are kneaded, silica gel base
The neutron shielding material that the technique such as body material is hot-forming is obtained, inhales with good thermal neutron shielding properties and larger thermal neutron
Section is received, material thick 4cm is up to 72.2% to the shielding rate of Am-Be neutron source outgoing neutrons；Using methyl ethylene silica gel as base
Soft easily curling after body, the polymer material molding obtained；Anti-flaming function filler composition can be inhaled when heated with decomposition and crystallization water
Hot or formation coating is heat-insulated, starvation, with higher fire resistance；In addition, by detection, the material also has higher
Mechanical strength and certain heat-proof quality, complex-shaped nuclear instrument equipment perimeter defense can not only be met, be also good
NEUTRON PROTECTION takes core material.
Embodiment
With reference to following specific embodiment, the invention will be further described：
Embodiment 1：
Neutron shielding material formula with anti-flaming thermal-insulation performance is：Hardness 5HA methyl ethylene silica gel 100g, B4C
Powder 90g, SiO2Hollow beads 8.2g, boric acid zinc powder 48g, double two or five vulcanizing agent 0.5g, KH-540 coupling agent 1g.Wherein B4C
Powder diameter 50um, SiO2Hollow beads particle diameter 25um, Firebrake ZB powder diameter 2.5um.
The preparation method step of neutron shielding material with anti-flaming thermal-insulation performance is as follows：
（1）Methyl ethylene silica gel matrix material is plasticated：Mill double roller spacing 2mm, rotating speed 45r/min are adjusted, works as roller
Cylinder temperature is at 30 DEG C ~ 50 DEG C, and start rotates double roller, and 100g methyl ethylenes silica gel is put between double roller and plasticated, when plasticating
Between 3 minutes.1g vulcanizing agents double 25 are added in above-mentioned methyl ethylene silica gel and proceed to plasticate 10 minutes, are during which used
Maneuver of rolling about is plasticated.
（2）Functional stuffing surface modification technology：Take 75g deionized waters and 3g KH-540 coupling agents and functional stuffing powder
Mixing, and reacted 1.5 hours at a temperature of 30 DEG C.
（3）Silica gel is kneaded with functional stuffing powder：Silica gel and the reaction of above-mentioned completion of plasticating are added in vacuum banbury
The functional powders of completion, reaction liquid mixture, adjust 105 DEG C of processing temperature, knead 30 minutes, be sufficiently mixed and remove moisture.
（4）Silica gel matrix material is hot-forming：It is 170 DEG C to set plate temperature above and below vulcanizing press, by vacuum banbury
In the silica gel based mixtures that knead be placed on and scribble in releasing agent flat board cavity mould, and spread and be stripped in flat plate mold top and bottom
Cloth, sample is further taken out after taking out mould, cooling after then adding 10MPa press cures 20 minutes.
Material mechanical performance：
| Density (g/cm3) | Shore hardness (HA) | Tensile strength (MPa) | Tearing strength (KN/m) | Elongation at break (%) |
| 1.34 | 22.5 | 0.363 | 3.54 | 311.5 |
Material heat-proof quality：Thermal conductivity 0.681W/ (mk).
Flame Retardancy energy：Oxygen index (OI) 28.3.
Neutron shield performance：Material thick 4cm is 72.2% to the shielding rate of Am-Be neutron source outgoing neutrons.
Embodiment 2：
Neutron shielding material formula with anti-flaming thermal-insulation performance is：Hardness 5HA methyl ethylene silica gel 100g, B4C
Powder 53.5g, TiO2Hollow beads 4.8g, boric acid zinc powder 28.3g, double two or five vulcanizing agent 2g, KH-550 coupling agent 3g.Wherein
B4C powder diameters 50um, TiO2Hollow beads particle diameter 20um, Firebrake ZB powder diameter 2.5um.
The preparation method step of neutron shielding material with anti-flaming thermal-insulation performance is as follows：
（1）Methyl ethylene silica gel matrix material is plasticated：Mill double roller spacing 2mm, rotating speed 45r/min are adjusted, works as roller
Cylinder temperature is at 30 DEG C ~ 50 DEG C, and start rotates double roller, and methyl ethylene silica gel is put between double roller and plasticated, is plasticated 4 points of time
Clock.A certain amount of vulcanizing agent double 25 is added in methyl ethylene silica gel and proceeds to plasticate 14 minutes, during which uses and beats
Rolling maneuver is plasticated.
（2）Functional stuffing surface modification technology：80g deionized waters and 3g KH-550 is taken to be mixed with functional stuffing powder,
And reacted 1.2 hours at a temperature of 40 DEG C.
（3）Silica gel is kneaded with functional stuffing powder：Silica gel and the reaction of above-mentioned completion of plasticating are added in vacuum banbury
The functional powders of completion, reaction liquid mixture, adjust 110 DEG C of processing temperature, knead 25 minutes, be sufficiently mixed and remove moisture.
（4）Silica gel matrix material is hot-forming：It is 180 DEG C to set plate temperature above and below vulcanizing press, by vacuum banbury
In the silica gel based mixtures that knead be placed on and scribble in releasing agent flat board cavity mould, and spread and be stripped in flat plate mold top and bottom
Cloth, sample is further taken out after taking out mould, cooling after then adding 13MPa press cures 17 minutes.
Material mechanical performance：
| Density (g/cm3) | Shore hardness (HA) | Tensile strength (MPa) | Tearing strength (KN/m) | Elongation at break (%) |
| 1.23 | 16.5 | 0.447 | 3.73 | 491.5 |
Material heat-proof quality：The W/ of thermal conductivity 0.533 (mk).
Flame Retardancy energy：Oxygen index (OI) 26.7.
Neutron shield performance：Material thick 4cm is 60.7% to the shielding rate of Am-Be neutron source outgoing neutrons.
Embodiment 3：
Neutron shielding material formula with anti-flaming thermal-insulation performance is：Hardness 5HA methyl ethylene silica gel 100g, B4C
Powder 30g, Al2O3Hollow beads 2.7g, boric acid zinc powder 15.8g, double two or five vulcanizing agent 3g, aminopropyl trimethoxysilane 5g.
Wherein B4C powder diameters 50um, Al2O3Hollow beads particle diameter 30um, Firebrake ZB powder diameter 2.5um.
The preparation method step of neutron shielding material with anti-flaming thermal-insulation performance is as follows：
（1）Methyl ethylene silica gel matrix material is plasticated：Mill double roller spacing 2mm, rotating speed 45r/min are adjusted, works as roller
Cylinder temperature is at 30 DEG C ~ 50 DEG C, and start rotates double roller, and methyl ethylene silica gel is put between double roller and plasticated, is plasticated 5 points of time
Clock.A certain amount of vulcanizing agent double 25 is added in methyl ethylene silica gel and proceeds to plasticate 15 minutes, during which uses and beats
Rolling maneuver is plasticated.
（2）Functional stuffing surface modification technology：Take 78.25g deionized waters and 5g aminopropyl trimethoxysilanes and function
Filler powder is mixed, and is reacted 1.5 hours at a temperature of 50 DEG C.
（3）Silica gel is kneaded with functional stuffing powder：Silica gel and the reaction of above-mentioned completion of plasticating are added in vacuum banbury
The functional powders of completion, reaction liquid mixture, adjust 115 DEG C of processing temperature, knead 30 minutes, be sufficiently mixed and remove moisture.
（4）Silica gel matrix material is hot-forming：It is 190 DEG C to set plate temperature above and below vulcanizing press, by vacuum banbury
In the silica gel based mixtures that knead be placed on and scribble in releasing agent flat board cavity mould, and spread and be stripped in flat plate mold top and bottom
Cloth, sample is further taken out after taking out mould, cooling after then adding 15MPa press cures 20 minutes.
Material mechanical performance：
| Density (g/cm3) | Shore hardness (HA) | Tensile strength (MPa) | Tearing strength (KN/m) | Elongation at break (%) |
| 1.11 | 11 | 0.51 | 2.12 | 671.1 |
Material heat-proof quality：The W/ of thermal conductivity 0.412 (mk).
Flame Retardancy energy：Oxygen index (OI) 24.5.
Neutron shield performance：Material thick 4cm is 48.9% to the shielding rate of Am-Be neutron source outgoing neutrons.
The several embodiments of the present invention are these are only, it is originally non-to limit the scope of the present invention, operated specifically
Sm may be selected in Cheng Zhong, neutron absorber functional stuffing powder2O3、Gd2O3、LiF、B4One or more in C, anti-flaming function filler
Aluminium hydroxide, magnesium hydroxide, Firebrake ZB, red phosphorus one or more therein may be selected in powder, and heat insulating function filler can be
TiO2Hollow beads, SiO2Hollow beads, Al2O3One or more in hollow beads, glass hollow microballon, powder surface changes
Property agent coupling agent KH-540, coupling agent KH-550, aminopropyl trimethoxysilane, one kind in coupling agent D-90 or several may be selected
Kind, these changes can all realize the purpose of the present invention.
Claims (4)
1. a kind of neutron shielding material with anti-flaming thermal-insulation performance, it is characterised in that concrete component is as follows, in terms of mass parts：
100 parts of methyl ethylene silica gel,
30-90 parts of neutron absorber material,
15.8-48 parts of anti-flaming function filler,
2.7-8.2 parts of heat insulating function filler,
Vulcanizing agent is double 25 0.5 ~ 3 parts,
1 ~ 5 part of powder surface modifier；
Wherein, the neutron absorber material is Sm2O3、Gd2O3, LiF or B4One or more in C；
The anti-flaming function filler is the one or more in aluminium hydroxide, magnesium hydroxide, Firebrake ZB or red phosphorus；
The heat insulating function filler is hollow beads；
The powder surface modifier is coupling agent KH-540, coupling agent KH-550, aminopropyl trimethoxysilane, coupling agent D-
90 one or more therein；
The hollow beads are TiO2Hollow beads, SiO2Hollow beads, Al2O3One kind in hollow beads or glass hollow microballon
Or it is a variety of.
2. there is the neutron shielding material of anti-flaming thermal-insulation performance according to claim 1, it is characterised in that the ethylene methacrylic
Base silica gel hardness is 5HA.
3. there is the neutron shielding material of anti-flaming thermal-insulation performance according to claim 2, it is characterised in that the neutron-absorbing
Body material, anti-flaming function filler, the particle diameter of heat insulating function filler are 2.5um ~ 50um.
4. the preparation method of the neutron shielding material with anti-flaming thermal-insulation performance as described in one of claim 1-3, its feature exists
In comprising the following steps that：
（1）It is 45rpm, 50 DEG C of double roller spacing 2mm, temperature 30- to adjust two-roll mill rotating speed, adds methyl ethylene silica gel
Plasticate 3-5min, adds vulcanizing agent double 25 and continues the 10-15min that plasticates；
（2）After neutron absorber material, anti-flaming function filler, heat insulating function filler, powder surface modifier are mixed, him is added
0.3-0.5 times of gross mass deionized water, react 1-1.5h at a temperature of 30-50 DEG C, obtain functional stuffing reaction solution；
（3）The functional stuffing reaction solution that plasticate product and the step 2 that step 1 is obtained are obtained is added in vacuum banbury, 105-
Banburying 20-30min at a temperature of 115 DEG C, obtains silica gel based mixtures；
（4）Plate temperature is 170-190 DEG C above and below vulcanizing press, adds the silica gel based mixtures for obtaining step 3,10-15MPa
Press cure 15-20min, obtains the neutron shielding material with anti-flaming thermal-insulation performance after cooling.
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| CN106098127B (en) * | 2016-06-06 | 2018-06-05 | 南京航空航天大学 | Flexible radiation protection material with radiation warning and temp regulating function and preparation method thereof |
| CN107603153B (en) * | 2017-09-18 | 2020-05-26 | 北京市射线应用研究中心 | Graphene/epoxy resin neutron shielding material and preparation method and application thereof |
| CN107778508B (en) * | 2017-09-29 | 2021-01-15 | 南京航空航天大学 | Gradient type flexible n-gamma mixed field radiation shielding material and preparation method thereof |
| SG11202003316RA (en) | 2017-10-11 | 2020-05-28 | Nippon Light Metal Co | Shield adhesive having neutron shielding properties |
| CN107698949A (en) * | 2017-10-18 | 2018-02-16 | 南京航空航天大学 | A kind of PLA base neutron shield composite and preparation method thereof |
| CN113185840A (en) * | 2021-04-28 | 2021-07-30 | 禾材高科(苏州)有限公司 | Flexible neutron shielding material and production process thereof |
| CN113462167B (en) * | 2021-08-09 | 2022-08-30 | 中国工程物理研究院化工材料研究所 | Bendable folded high neutron shielding performance organic silicon rubber and preparation method thereof |
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| CN102693767A (en) * | 2012-05-21 | 2012-09-26 | 北京富迪创业科技有限公司 | Ultra-thin neutron radiation preventive composite shielding material and preparation method thereof |
| CN102708937A (en) * | 2012-05-21 | 2012-10-03 | 北京富迪创业科技有限公司 | Anti-thermal neutron radiation shielding material and preparation method thereof |
| CN103971775A (en) * | 2014-05-09 | 2014-08-06 | 北京化工大学 | High temperature resistance neutron shield material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102693767A (en) * | 2012-05-21 | 2012-09-26 | 北京富迪创业科技有限公司 | Ultra-thin neutron radiation preventive composite shielding material and preparation method thereof |
| CN102708937A (en) * | 2012-05-21 | 2012-10-03 | 北京富迪创业科技有限公司 | Anti-thermal neutron radiation shielding material and preparation method thereof |
| CN103971775A (en) * | 2014-05-09 | 2014-08-06 | 北京化工大学 | High temperature resistance neutron shield material and preparation method thereof |
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