CN107698949A - A kind of PLA base neutron shield composite and preparation method thereof - Google Patents
A kind of PLA base neutron shield composite and preparation method thereof Download PDFInfo
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- CN107698949A CN107698949A CN201710968870.1A CN201710968870A CN107698949A CN 107698949 A CN107698949 A CN 107698949A CN 201710968870 A CN201710968870 A CN 201710968870A CN 107698949 A CN107698949 A CN 107698949A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F1/00—Shielding characterised by the composition of the materials
- G21F1/02—Selection of uniform shielding materials
- G21F1/10—Organic substances; Dispersions in organic carriers
- G21F1/103—Dispersions in organic carriers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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Abstract
A kind of PLA base neutron shield composite of disclosure and preparation method thereof, it is related to the composite and preparation method field for radiation protection clothes, taken the present invention is to solve core with radiation protection and polluted post processing problem by radioactive source, using high polymer material PLA that can be degradable and the modification of toughener melt blending, PLA based mixtures and neutron absorber material, anti-flaming function filler are added in mill and plasticated, obtain polylactic acid-base composite material；The material possesses thermal neutron shielding properties, and good pliability, fire resistance, mechanical performance；Moreover, after being polluted as nuclear power with radiation protection clothes by radioactive source, it can realize that degradable, post processing is pollution-free.
Description
Technical field
The invention belongs to nuclear radiation protection, radiation shielding material field, and in particular to a kind of PLA base neutron shield is answered
Condensation material and preparation method thereof.
Background technology
With the rapid development of nuclear industry, its relevant radiation safety, Radiation Protection are paid close attention to by more and more people.
At present, traditional neutron radiation protective clothing is using fiber cloth, silica gel as main material, after being polluted by radioactive source, decontamination be present and is stranded
Hardly possible, easily generate secondary pollution problems.Therefore, one kind is developed after radioactive source pollutes, the neutron shield that can preferably post-process
Composite, it has also become this area technical barrier urgently to be resolved hurrily.
The content of the invention
The technical problem of solution：The application mainly proposes a kind of PLA base neutron shield composite and its preparation side
There is the technical problems such as cost height, effect difference in method, solution, have good mechanical property, fire resistance, hanker in the prior art
The neutron shield composite of sub- shielding properties and energy complete biodegradable.
Technical scheme：A kind of PLA base neutron shield composite, the PLA base neutron shield composite
Raw material is matched as follows by mass fraction：PLA 100-110 parts, toughener 10-70 parts, anti-flaming function filler 10-20 parts, neutron
Shield filler 40-80 parts, powder surface modifier 4-6 parts.
As a preferred technical solution of the present invention：Described PLA density is 1.2-1.3g/cm3。
As a preferred technical solution of the present invention：Described toughener is polyadipate/butylene terephthalate
One or more of mixtures in PBAT, polycaprolactone (PCL), polypropylene carbonate PPC.
As a preferred technical solution of the present invention：Described anti-flaming function filler is ammonium phosphate, aluminium hydroxide, boric acid
One or more of mixtures in salt.
As a preferred technical solution of the present invention：Described neutron shield filler is B4C, it is one or two kinds of in BN.
As a preferred technical solution of the present invention：Described powder surface modifier is aluminate coupling agent, coupling
One or more of mixtures in agent DL-411, coupling agent WOT-108.
A kind of method for preparing the PLA base neutron shield composite, comprises the following steps：
The first step, polylactic acid modified processing：By PLA and toughener according to 10:1 mass ratio together adds screw machine and fed
Material machine carries out melt blending 5-10min, and temperature control mixes to toughener and PLA at 175-185 DEG C, obtains PLA and mix
Compound；
Second step：Anti-flaming function filler, neutron shield filler and powder surface modifier are added into 0.4-0.5 times of its gross mass
In deionized water, with reacting 1h at a temperature of 25-40 DEG C, functional stuffing reaction solution is obtained；
3rd step：The functional stuffing reaction solution that the poly-lactic acid mixture of the first step and second step are obtained is according to 2:1 mass ratio
Example is added in mill, and plasticated 20-25min at a temperature of 100-110 DEG C, and composite is placed in into 30-40 DEG C of temperature after the completion of plasticating
Degree is lower to be cooled and solidified, that is, obtains PLA base neutron shield composite.
Beneficial effect：Herein described a kind of PLA base neutron shield composite and preparation method thereof uses above technical side
Case compared with prior art, has following technique effect：
1st, the PLA base neutron shield composite developed of the present invention, using PLA as matrix, through toughening agent modified, with the addition of
Anti-flaming function filler and neutron shield filler, obtained neutron composite shielding material have higher neutron shield performance, mechanics
Performance, fire resistance, energy complete biodegradable, recontamination is not caused to environment by radioactive source pollution last handling process.
2nd, tensile strength is up to 54MPa, Good Heat-resistance, and heat distortion temperature is up to 105 DEG C, and Flame Retardancy can be good,
Oxygen index (OI) is 27.8.
3rd, preparation process of the present invention is simple, practical, neutron shield：5cm thickness materials go out for Am-Be neutron sources
The shielding rate for hitting son is up to 72.6%.
Embodiment
With reference to embodiment, the present invention is further detailed explanation.
Embodiment 1
A kind of PLA base neutron shield composite, is formulated and is：PLA 100g, PBAT toughener 10g, B4C powder 80g,
Aluminium-hydroxide powder 15g, DL-411 coupling agent 2g.Wherein PLA density is 1.27g/cm3, PBAT toughener density is
1.23g/cm3, B4C powder diameter 50um, aluminium-hydroxide powder purity are 99.5%, particle diameter 5um.
The preparation method of PLA base neutron shield composite, comprises the following steps：
The first step, polylactic acid modified processing：Screw machine feeding machine temperature setting is at 180 DEG C, by PLA and toughener PBAT mono-
Melt blending is carried out with screw machine spout is added 8 minutes, is mixed to toughener and PLA, is obtained poly-lactic acid mixture.
Second step, functional stuffing surface modification treatment：By aluminium-hydroxide powder, B4C powder, DL-411 coupling agents add
In 50g deionized water, and reacted 1 hour at a temperature of 30 DEG C, obtain functional stuffing reaction solution.
3rd step, PLA base neutron shield composite are plasticated and shaped：By mill temperature setting into 100 DEG C, add
Enter above-mentioned poly-lactic acid mixture and functional stuffing reaction solution, be kneaded 25 minutes, be sufficiently mixed and remove moisture removal.Take out composite wood
Expect sample, cooled and solidified at a temperature of 35 DEG C.
After testing, the performance data of this kind of degradable neutron shield composite is as follows：
Tensile strength：45MPa；
Heat distortion temperature：103℃；
Flame Retardancy energy：25.5 oxygen index (OI)s；
Neutron shield：5cm thickness materials are for the shielding rate of Am-Be neutron source outgoing neutrons：72.6%.
Embodiment 2
With readily degradable can the formula of PLA base neutron shield composite be：PLA 80g, PBAT toughener 40g,
B4C powder 60g, aluminium-hydroxide powder 15g, DL-411 coupling agent 2g.Wherein PLA density is 1.27g/cm3, PBAT toughener
Density is 1.23g/cm3, B4C powder diameter 50um, aluminium-hydroxide powder purity are 99.5%, particle diameter 5um.
The preparation process of PLA base neutron shield composite with readily degradable energy is as follows：
The first step, polylactic acid modified processing：Screw machine feeding machine temperature setting is at 180 DEG C, by PLA and toughener PBAT mono-
Melt blending is carried out with screw machine spout is added 8 minutes, is mixed to toughener and PLA, is obtained poly-lactic acid mixture；
Second step, functional stuffing surface modification treatment：By aluminium-hydroxide powder, B4C powder, DL-411 coupling agents add 50g's
In deionized water, and reacted 1 hour at a temperature of 30 DEG C, obtain functional stuffing reaction solution；
3rd step, PLA base neutron shield composite are plasticated and shaped：By mill temperature setting into 100 DEG C, in addition
The poly-lactic acid mixture and functional stuffing reaction solution stated, it is kneaded 25 minutes, is sufficiently mixed and removes moisture removal.Take out composite sample
Product, cooled and solidified at a temperature of 35 DEG C.
After testing, the performance data of this kind of degradable neutron shield composite is as follows：
Tensile strength：50MPa；
Heat distortion temperature：105℃；
Flame Retardancy energy：27.8 oxygen index (OI)s；
Neutron shield：5cm thickness materials are for the shielding rate of Am-Be neutron source outgoing neutrons：60.1%.
Embodiment 3
With readily degradable can the formula of PLA base neutron shield composite be：PLA 70g, PBAT toughener 35g,
B4C powder 40g, aluminium-hydroxide powder 15g, DL-411 coupling agent 2g.Wherein PLA density is 1.27g/cm3, PBAT toughener
Density is 1.23g/cm3, B4C powder diameter 50um, aluminium-hydroxide powder purity are 99.5%, particle diameter 5um.
The preparation process of PLA base neutron shield composite with readily degradable energy is as follows：
The first step, polylactic acid modified processing：Screw machine feeding machine temperature setting is at 180 DEG C, by PLA and toughener PBAT mono-
Melt blending is carried out with screw machine spout is added 8 minutes, is mixed to toughener and PLA, is obtained poly-lactic acid mixture；
Second step, functional stuffing surface modification treatment：By aluminium-hydroxide powder, B4C powder, DL-411 coupling agents add 50g's
In deionized water, and reacted 1 hour at a temperature of 30 DEG C, obtain functional stuffing reaction solution；
3rd step, PLA base neutron shield composite are plasticated and shaped：By mill temperature setting into 100 DEG C, in addition
The poly-lactic acid mixture and functional stuffing reaction solution stated, it is kneaded 25 minutes, is sufficiently mixed and removes moisture removal.Take out composite sample
Product, cooled and solidified at a temperature of 35 DEG C.
After testing, the performance data of this kind of degradable neutron shield composite is as follows：
Tensile strength：54MPa；
Heat distortion temperature：101℃；
Flame Retardancy energy：26.4 oxygen index (OI)s；
Neutron shield：5cm thickness materials are for the shielding rate of Am-Be neutron source outgoing neutrons：44.5%.
Above-mentioned embodiment is only the preferred embodiment of the present invention, it is impossible to the scope of protection of the invention is limited 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 (7)
1. a kind of PLA base neutron shield composite, it is characterised in that the PLA base neutron shield composite
Raw material is matched as follows by mass fraction：PLA 100-110 parts, toughener 10-70 parts, anti-flaming function filler 10-20 parts, neutron
Shield filler 40-80 parts, powder surface modifier 4-6 parts.
2. PLA base neutron shield composite according to claim 1, it is characterised in that：Described PLA density
For 1.2-1.3g/cm3。
3. PLA base neutron shield composite according to claim 1, it is characterised in that：Described toughener is poly-
One or more of mixtures in adipic acid/butylene terephthalate PBAT, polycaprolactone (PCL), polypropylene carbonate PPC.
4. PLA base neutron shield composite according to claim 1, it is characterised in that：Described anti-flaming function is filled out
Expect for one or more of mixtures in ammonium phosphate, aluminium hydroxide, borate.
5. PLA base neutron shield composite according to claim 1, it is characterised in that：Described neutron shield is filled out
Expect for B4C, it is one or two kinds of in BN.
6. PLA base neutron shield composite according to claim 1, it is characterised in that：, described powder surface
Modifying agent is one or more of mixtures in aluminate coupling agent, coupling agent DL-411, coupling agent WOT-108.
A kind of 7. method for preparing any PLA base neutron shield composites of claim 1-6, it is characterised in that bag
Include following steps：
The first step, polylactic acid modified processing：By PLA and toughener according to 10:1 mass ratio together adds screw machine and fed
Material machine carries out melt blending 5-10min, and temperature control mixes to toughener and PLA at 175-185 DEG C, obtains PLA and mix
Compound；
Second step：Anti-flaming function filler, neutron shield filler and powder surface modifier are added into 0.4-0.5 times of its gross mass
In deionized water, 1h is reacted at a temperature of 25-40 DEG C, obtains functional stuffing reaction solution；
3rd step：The functional stuffing reaction solution that the poly-lactic acid mixture of the first step and second step are obtained is according to 2:1 mass ratio
Example is added in mill, and plasticated 20-25min at a temperature of 100-110 DEG C, and composite is placed in into 30-40 DEG C of temperature after the completion of plasticating
Degree is lower to be cooled and solidified, that is, obtains PLA base neutron shield composite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710968870.1A CN107698949A (en) | 2017-10-18 | 2017-10-18 | A kind of PLA base neutron shield composite and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710968870.1A CN107698949A (en) | 2017-10-18 | 2017-10-18 | A kind of PLA base neutron shield composite and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108795003A (en) * | 2018-06-18 | 2018-11-13 | 北京点域科技有限公司 | A kind of preparation method of Biodegradable medical material |
| CN111534066A (en) * | 2020-05-13 | 2020-08-14 | 江西广源新材料有限公司 | Functional master batch for reinforcing and toughening polylactic acid fiber, preparation method thereof and reinforcing and toughening polylactic acid material |
| CN113183578A (en) * | 2021-04-23 | 2021-07-30 | 成都盛帮密封件股份有限公司 | Composite material for nuclear radiation protective clothing and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104744945A (en) * | 2015-03-24 | 2015-07-01 | 南京航空航天大学 | Neutron shield material with flame-retardant neutron shield heat-shielding performance and preparation method thereof |
| CN106566214A (en) * | 2016-10-18 | 2017-04-19 | 安徽省卓煜新材料科技有限公司 | Synergistic flame-retardant polylactic acid nanometer composite material and preparation method thereof |
-
2017
- 2017-10-18 CN CN201710968870.1A patent/CN107698949A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104744945A (en) * | 2015-03-24 | 2015-07-01 | 南京航空航天大学 | Neutron shield material with flame-retardant neutron shield heat-shielding performance and preparation method thereof |
| CN106566214A (en) * | 2016-10-18 | 2017-04-19 | 安徽省卓煜新材料科技有限公司 | Synergistic flame-retardant polylactic acid nanometer composite material and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108795003A (en) * | 2018-06-18 | 2018-11-13 | 北京点域科技有限公司 | A kind of preparation method of Biodegradable medical material |
| CN111534066A (en) * | 2020-05-13 | 2020-08-14 | 江西广源新材料有限公司 | Functional master batch for reinforcing and toughening polylactic acid fiber, preparation method thereof and reinforcing and toughening polylactic acid material |
| CN111534066B (en) * | 2020-05-13 | 2022-07-05 | 江西广源新材料有限公司 | Functional master batch for reinforcing and toughening polylactic acid fiber, preparation method thereof and reinforcing and toughening polylactic acid material |
| CN113183578A (en) * | 2021-04-23 | 2021-07-30 | 成都盛帮密封件股份有限公司 | Composite material for nuclear radiation protective clothing and preparation method thereof |
| CN113183578B (en) * | 2021-04-23 | 2022-10-14 | 成都盛帮密封件股份有限公司 | Composite material for nuclear radiation protective clothing and preparation method thereof |
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