CN107841878A - A kind of unleaded gamma ray shielding flexible composite and preparation method thereof - Google Patents
A kind of unleaded gamma ray shielding flexible composite and preparation method thereof Download PDFInfo
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- CN107841878A CN107841878A CN201710885948.3A CN201710885948A CN107841878A CN 107841878 A CN107841878 A CN 107841878A CN 201710885948 A CN201710885948 A CN 201710885948A CN 107841878 A CN107841878 A CN 107841878A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/01—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with hydrogen, water or heavy water; with hydrides of metals or complexes thereof; with boranes, diboranes, silanes, disilanes, phosphines, diphosphines, stibines, distibines, arsines, or diarsines or complexes thereof
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/47—Oxides or hydroxides of elements of Groups 5 or 15 of the Periodic System; Vanadates; Niobates; Tantalates; Arsenates; Antimonates; Bismuthates
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/83—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/02—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with hydrocarbons
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
- D06M15/03—Polysaccharides or derivatives thereof
- D06M15/05—Cellulose or derivatives thereof
- D06M15/09—Cellulose ethers
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/32—Polyesters
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/50—Modified hand or grip properties; Softening compositions
Abstract
The invention discloses a kind of unleaded gamma ray shielding flexible composite and preparation method.Aqueous polyurethane is mixed with appropriate thickener I, is then disperseed at a slow speed on scattered sand mill, gamma ray shielding agent is slowly added in dispersion process, after scattering, sequentially adds a small amount of thickener II, defoamer, dispersant, coupling agent；Rate of dispersion is adjusted to quickly, disperse 20min, add a small amount of defoamer again, then keeps rapid dispersion 10min；Said mixture is subjected to ultrasonic disperse 20 minutes；Vacuumize process is finally carried out to said mixture to remove bubble, so far, coating preparation is completed.Fabric substrate is fixed on coating machine pin frame, coating treatment is carried out to base fabric using the coating of above-mentioned preparation, coated fabric is hung at room temperature 2 hours, 60 DEG C are subsequently placed in baking oven to dry 1 hour, or hang coated fabric at room temperature 24 hours, obtain unleaded gamma ray shielding flexible composite.
Description
Technical field
The invention belongs to shielding material technical field, and in particular to a kind of unleaded gamma ray shielding flexible composite and its
Preparation method
Background technology
With the application of nuclear technology and the development of atomic energy cause, various high-energy rays be widely used in medical science, communication,
Each neighborhoods such as military affairs, industry, agricultural, scientific research, but nuclear energy and Application of Nuclear Technology are a double-edged swords, are developed in nuclear technology
During safety problem and radioactive pollution preventing and treating problem it is particularly significant, nuclear radiation can cause human cell's hereditary variation, draw
Radiation sickness is played, in addition it is dead.
Gamma-rays has great radiation hazradial bundle to context, to people while its good application value is embodied
Body health has serious threat, can induce canceration even gene mutation.Traditional gamma-rays protective materials is more, generally from high
Atomic number material and common architectural material mainly have water, soil, iron ore, concrete, iron, lead, lead glass as protective materials
Glass, rare earth, tungsten, depleted uranium, brick, ionized water and some high polymers such as material such as lead-boron polythene, boracic polypropylene.New γ is penetrated
Line protective materials mainly has composite of leaded, tungstenic, bismuth-containing etc., such as Bi2O3、WO3、PbWO4Deng.Penetrated both at home and abroad for γ
Substantial amounts of research work has been done in the protection of line, and achieves certain achievement.Such as reduce and powder is filled in lead rubber
Particle diameter, heavy metal element tantalum modified PVC, PE are adulterated, by controlling the dispersion effect of bismuth oxide in the base, prevents material internal
There is defect, increase scattering collision probability, fill nanoscale functional particles, using nano-particle quantum effect, skin effect with
And different interparticle synergies carry out barrier propterty of reinforcing material etc..But its protection of the material prepared using these methods is imitated
Fruit is barely satisfactory, and preparation technology is complicated, and cost is higher, it is difficult to meets the needs of industrialization development.
At present in gamma-rays protective materials, lead-containing materials are occupied an leading position, however, lead has one as radiation protection material
A little drawbacks, lead inherently source of heavy metal pollution, easily cause heavy metal poisoning in use, because Pb elements are higher
Mobility, easily move out, contactee and environment can be damaged from composite, especially can be to being engaged in radiation work
Personnel cause security threat, in addition, lead material also has, secondary radiation, hardness are poor, structural strength is poor, deposit the shortcomings of non-refractory
Therefore, lead material can not meet the needs of modern protection theory as Shielding Materials for Nuclear Radiation.
Under the demand that current nuclear emergency and anti-nuclear strike protect, the exploitation of protective materials is particularly important, all applications
Nuclear energy technology and the unit or project for being engaged in ionising radiation research, it is necessary to pay attention to radiation safety and the protection question thus brought.
Therefore, the great demand equipped in face of civilian military project radiation protection, less toxic, environmentally friendly, efficient, lightweight, easy processing the γ of exploitation-
Ray protective materials has great importance and is widely applied prospect.
The present invention be directed to bismuth the feature of environmental protection, along with the elements such as bismuth, tantalum heavy element effect and bismuth oxide to gamma-rays
Good protection effect, with reference to textile material it is soft light the characteristics of, prepare environmental protection, efficiently, the nuclear defence of lightweight, softness it is soft
Property composite, has widened the application of gamma-rays protective materials, can provide reference for the exploitation of ray protective clothing fabric.
The content of the invention
The present invention is in order to solve the above technical problems, provide a kind of unleaded gamma ray shielding flexible composite and its preparation side
Method.
The unleaded gamma ray shielding flexible composite of the present invention, is prepared with coating process, and material composition is base
Cloth and coating.
In the present invention, the base fabric is that having of preparing of any fiber can coat the woven fabric of property, knitted fabric, non-woven
One kind in cloth, the selection of its base fabric type depend on requirement, such as demand to fiber properties, to fabric strength, grammes per square metre,
The requirement of pleasant softness etc..
In the present invention, described base fabric requires certain strength, and certain can be provided in coating process progress
Power；It is required that base fabric has certain density, it is not enough to allow coating infiltration to be lost in.
In the present invention, the composition and parts by weight of the coating are：Aqueous polyurethane：35 ~ 70 parts by weight；Thickener I：0.1~
1 parts by weight；Thickener II：0.1 ~ 1 parts by weight；Gamma ray shielding agent：30 ~ 60 parts by weight；Dispersant：0.1 ~ 1 parts by weight；It is even
Join agent：0.1 ~ 1 parts by weight；Defoamer：0.1 ~ 1 parts by weight；In the present invention, described aqueous polyurethane is emulsion, solid powder 30
± 1, viscosity（25 DEG C, mPa.S）Less than 300.
In the present invention, the thickener I is water-based thickener, and main component is urethanes, pH value 7.0 ± 0.1,
Viscosity≤3000CPS/25 DEG C.
In the present invention, the thickener II is cellulose.
In the present invention, the gamma ray shielding agent is bismuth, the one or more in tantalum, bismuth oxide, particle diameter<75μm.
In the present invention, the dispersant is anionic dispersing agent.
In the present invention, the coupling agent is silane coupler.
In the present invention, the defoamer is organic silicon defoamer or mineral oil defoaming agent.
Present invention also offers the preparation method of above-mentioned unleaded gamma ray shielding flexible composite, comprise the following steps.
1）The preparation of base fabric：Prepare the cloth of suitable size on request, it be entirely fixed on coating machine pin frame,
Adjust to suitable tension.
2）The preparation of coating；A, proportionately distribution is standby weighs each raw material；B, thickener I is added to juxtaposition in aqueous polyurethane
It is dispersed with stirring under dispersion machine, dispersing speed 500r/min, gamma ray shielding agent is slowly added in dispersion process, disperses 5
Minute.Dispersing speed is adjusted to 3000r/min, then sequentially adds thickener II, dispersant, coupling agent, defoamer, is disperseed
15 minutes, a small amount of defoamer is added, is continued scattered 10 minutes；C, ultrasonic disperse 20 is carried out to the compound of gained in step b
Minute；D, vacuumize process is carried out to the compound obtained by step c with bubble removing, vacuum<0.07Mpa.
3）The preparation of coated fabric composite：By step 2）Prepared coating is on coating machine to step 1）Prepared
Base fabric carry out top finish, coated fabric is hung at room temperature 2 hours, then dried one hour at 60 DEG C；Or it will apply
Layer fabric is hung 24 hours at room temperature to be solidified, and obtains unleaded gamma ray shielding flexible composite.
The beneficial effects of the present invention are：The present invention is used " green metal " using the water paint without organic solvent
Bi and its oxide Bi2O3For functional stuffing, and the heavy metal elements such as tantalum are added, be prepared for efficient, environmentally friendly, nontoxic " green "
Nuclear radiation protection flexible composite.
The present invention makes functional particles rationally disperse in resin matrix by improving technique, improves flexible composite
The effective protective capacities of gamma-rays, may replace leadwork under certain condition.
The present invention combines the good characteristic of textile material, by the use of woven fabric as the base fabric of coating composite material, improves material
The flexibility of material, strength, reduce grammes per square metre.
Preparation technology of the present invention is simple, it is easy to accomplish, reference can be provided for the exploitation of alpha ray shield protective garment fabric.
Brief description of the drawings
Fig. 1 is the performance detection data of the unleaded gamma ray shielding flexible composite obtained by embodiment 1.
Fig. 2 is the performance detection data of the unleaded gamma ray shielding flexible composite obtained by embodiment 2.
Embodiment
The invention provides a kind of unleaded gamma ray shielding flexible composite and preparation method thereof, with reference to specific reality
Applying mode, the present invention will be further described.
Embodiment 1.
The base fabric selection of unleaded gamma ray shielding flexible composite is polyester cotton blending woven fabric in the present embodiment, and yarn is thin
Spend for warp thread 45S, weft yarn 45S；Fabric tissue is plain weave；Density is 76 pieces/inch of 110 pieces/inch × weft yarn of warp thread.Coating bag
Include following parts by weight of component：The aqueous polyurethane of 41.5 parts by weight, the thickener I of 1 parts by weight, the thickener II of 0.5 parts by weight,
The gamma ray shielding agent of 55 parts by weight, the dispersant of 0.5 parts by weight, the coupling agent of 0.5 parts by weight, the defoamer of 1 parts by weight.
Wherein, the aqueous polyurethane of 41.5 parts by weight is PU-2540.
The thickener I of 1 parts by weight is water-based thickener D-950C.
The thickener II of 0.5 parts by weight is hydroxypropyl methyl cellulose.
The gamma ray shielding agent of 55 parts by weight is the bismuth of 50 parts by weight（Analyze pure, particle diameter is<25μm）, 5 parts by weight tantalum
（Analyze pure, particle diameter<10μm）.
The dispersant of 0.5 parts by weight is dispersant 5040.
The coupling agent of 0.5 parts by weight is Silane coupling agent KH550.
The defoamer of 1 parts by weight is mineral oil defoaming agent.
Its specific preparation process is as follows.
1）The preparation of base fabric：Prepare 30 × 30cm on request2Cloth, it is entirely fixed on to coating machine pin frame
On, adjust to suitable tension.
2）The preparation of coating：A, proportionately distribution is standby weighs each raw material；B, the water-based thickener D-950C of 1 parts by weight is added
It is placed in being dispersed with stirring under dispersion machine into 41.5 parts by weight aqueous polyurethanes, dispersing speed 500r/min, in dispersion process
In be slowly added to bismuth, the tantalum of 5 parts by weight of 50 parts by weight, disperse 5 minutes.Dispersing speed is adjusted to 3000r/min, Ran Houyi
The secondary addition hydroxypropyl methyl cellulose of 0.5 parts by weight, the dispersant 5040 of 0.5 parts by weight, the silane coupler of 0.5 parts by weight
KH550,0.5 parts by weight mineral oil defoaming agent, disperse 15 minutes, add the mineral oil defoaming agent of 0.5 parts by weight, after
It is continuous scattered 10 minutes；C, ultrasonic disperse is carried out 20 minutes to the compound of gained in step b；D, to the compound obtained by step c
Vacuumize process is carried out with bubble removing, vacuum<0.07Mpa.
3）The preparation of coated fabric composite：By step 2）Prepared coating is on coating machine to step 1）Prepared
Base fabric carry out top finish, coated fabric is hung at room temperature 24 hours and solidified, it is flexible multiple to obtain unleaded gamma ray shielding
Condensation material.
After testing, the performance data of the unleaded gamma ray shielding flexible composite is shown in Fig. 1.
Embodiment 2.
The base fabric selection of unleaded gamma ray shielding flexible composite is polyester cotton blending woven fabric in the present embodiment, and yarn is thin
Spend for warp thread 45S, weft yarn 45S；Fabric tissue is plain weave；Density is 76 pieces/inch of 110 pieces/inch × weft yarn of warp thread.Coating bag
Include following parts by weight of component：The aqueous polyurethane of 120.9 parts by weight, the thickener I of 2.6 parts by weight, the thickener of 1.3 parts by weight
II, the gamma ray shielding agent of 130 parts by weight, the dispersant of 1.3 parts by weight, the coupling agent of 1.3 parts by weight, 2.6 parts by weight disappear
Infusion.
Wherein, the aqueous polyurethane of 120.9 parts by weight is PU-2540.
The thickener I of 2.6 parts by weight is water-based thickener D-950C.
The thickener II of 1.3 parts by weight is hydroxypropyl methyl cellulose.
The gamma ray shielding agent of 130 parts by weight is the bismuth of 65 parts by weight（Analyze pure, particle diameter is<25μm）, 65 parts by weight
Bismuth oxide（Analyze it is pure, particle diameter be 1 ~ 75 μm）.
The dispersant of 1.3 parts by weight is dispersant 5040.
The coupling agent of 1.3 parts by weight is Silane coupling agent KH550.
The defoamer of 2.6 parts by weight is mineral oil defoaming agent.
Its specific preparation process is as follows.
1）The preparation of base fabric：Prepare 30 × 30cm on request2Cloth, it is entirely fixed on to coating machine pin frame
On, adjust to suitable tension.
2）The preparation of coating：A, proportionately distribution is standby weighs each raw material.B, the water-based thickener D-950C of 2.6 parts by weight is added
Enter into 120.9 parts by weight aqueous polyurethanes to be placed in be dispersed with stirring under dispersion machine, dispersing speed 500r/min, disperseing
Bismuth, the bismuth oxide of 65 parts by weight of 65 parts by weight are slowly added in journey, is disperseed 5 minutes.Dispersing speed is adjusted to 3000r/
Min, then sequentially add the hydroxypropyl methyl celluloses of 1.3 parts by weight, the dispersant 5040 of 1.3 parts by weight, 1.3 parts by weight
The mineral oil defoaming agent of Silane coupling agent KH550,1.3 parts by weight, disperse 15 minutes, add the mineral oil of 1.3 parts by weight
Class defoamer, continue scattered 10 minutes.C, ultrasonic disperse is carried out 20 minutes to the compound of gained in step b.D, to step c institutes
The compound obtained carries out vacuumize process with bubble removing, vacuum<0.07MPa.
3）The preparation of coated fabric composite：By step 2）Prepared coating is on coating machine to step 1）Prepared
Base fabric carry out top finish, coated fabric is hung at room temperature 24 hours and solidified, it is flexible multiple to obtain unleaded gamma ray shielding
Condensation material.
After testing, the performance data of the unleaded gamma ray shielding flexible composite is shown in Fig. 2.
Above-mentioned embodiment is only the preferred embodiment of the present invention, can not limit the scope of protection of the invention with this,
The change and replacement for any unsubstantiality that those skilled in the art is done on the basis of the present invention belong to institute of the present invention
Claimed scope.
Claims (13)
1. unleaded gamma ray shielding flexible composite, it is characterised in that：Prepared using fabric coating technique, material composition is base
Cloth and coating.
2. unleaded gamma ray shielding flexible composite according to claim 1, it is characterised in that the base fabric is any
One kind having in the woven fabric, knitted fabric, non-woven cloth that can coat property prepared by fiber, the selection of its base fabric type are depended on
In requirement, such as demand to fiber properties, the requirement to fabric strength, grammes per square metre, pleasant softness etc..
3. unleaded gamma ray shielding flexible composite according to claim 1, it is characterised in that the base fabric requires tool
There is certain strength, certain tension force can be provided in coating process progress；It is required that base fabric has certain density, it is not enough to allow
Coating infiltration is lost in.
4. unleaded gamma ray shielding flexible composite according to claim 1, it is characterised in that the composition of the coating
And parts by weight are：Aqueous polyurethane：35 ~ 70 parts by weight；Thickener I：0.1 ~ 1 parts by weight；Thickener II：0.1 ~ 1 parts by weight；γ
Alpha ray shield agent：30 ~ 60 parts by weight；Dispersant：0.1 ~ 1 parts by weight；Coupling agent：0.1 ~ 1 parts by weight；Defoamer：0.1 ~ 1 weight
Part.
5. unleaded gamma ray shielding flexible composite according to claim 4, it is characterised in that the aqueous polyurethane
For emulsion, solid powder 30 ± 1, viscosity（25 DEG C, mPa.S）Less than 300.
6. unleaded gamma ray shielding flexible composite according to claim 4, it is characterised in that the thickener I is
Water-based thickener, main component are urethanes, pH value 7.0 ± 0.1, viscosity≤3000CPS/25 DEG C.
7. unleaded gamma ray shielding flexible composite according to claim 4, it is characterised in that the thickener II is
Cellulose.
8. unleaded gamma ray shielding flexible composite according to claim 4, it is characterised in that the gamma ray shielding
Agent is bismuth oxide, the one or more in bismuth, tantalum, particle diameter<75μm.
9. unleaded gamma ray shielding flexible composite according to claim 4, it is characterised in that the dispersant is the moon
Ionic dispersant.
10. unleaded gamma ray shielding flexible composite according to claim 4, it is characterised in that the coupling agent is silicon
Alkane coupling agent.
11. unleaded gamma ray shielding flexible composite according to claim 4, it is characterised in that the defoamer is to have
Machine silicon defoaming agent or mineral oil defoaming agent.
12. the preparation method of unleaded gamma ray shielding flexible composite according to claim 1, it is characterised in that including
Following steps：1）The preparation of base fabric：Prepare the cloth of suitable size on request, it is entirely fixed on to coating machine pin frame
On, adjust to suitable tension；2）The preparation of coating：A, proportionately distribution is standby weighs each raw material；B, thickener I is added to water-based poly-
It is placed in being dispersed with stirring under dispersion machine in urethane, dispersing speed 500r/min, gamma-rays screen is slowly added in dispersion process
Cover agent, disperse 5 minutes, dispersing speed is adjusted to 3000r/min, then sequentially add thickener II, dispersant, coupling agent,
Defoamer, disperse 15 minutes, add a small amount of defoamer, continue scattered 10 minutes；C, the compound of gained in step b is carried out
Ultrasonic disperse 20 minutes；D, vacuumize process is carried out to the compound obtained by step c with bubble removing, vacuum<0.07Mpa；3）
The preparation of coated fabric composite.
13. by step 2）Prepared coating is on coating machine to step 1）The base fabric prepared carries out top finish, by coating
Fabric is hung 2 hours at room temperature, is then dried one hour at 60 DEG C；Or coated fabric is hung to 24 hours at room temperature admittedly
Change, obtain unleaded gamma ray shielding flexible composite.
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| CN109177396A (en) * | 2018-09-17 | 2019-01-11 | 浙江三元电子科技有限公司 | A kind of protection composite material and preparation method |
| CN109267333A (en) * | 2018-08-22 | 2019-01-25 | 北京镭蒙泰克科技有限公司 | Anti-radiation composite material and preparation method |
| CN109281183A (en) * | 2018-09-27 | 2019-01-29 | 天津工业大学 | A kind of signal layer coating composite material and preparation method for electromagnetic protection field |
| CN109295741A (en) * | 2018-09-27 | 2019-02-01 | 天津工业大学 | A kind of equadag coating oxidization fiber felt composite material and preparation method thereof for electromagnetic protection field |
| CN110105743A (en) * | 2019-04-12 | 2019-08-09 | 深圳大学 | A kind of unleaded X, gamma ray shielding material and preparation method thereof |
| CN115162016A (en) * | 2022-08-01 | 2022-10-11 | 英纳能（北京）特种材料科技有限公司 | Tin/antimony composite coating and preparation method thereof, and tin/antimony composite coating fabric and preparation method and application thereof |
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