CN107652509A - A kind of lead-boron polythene composite material and preparation method thereof - Google Patents
A kind of lead-boron polythene composite material and preparation method thereof Download PDFInfo
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- CN107652509A CN107652509A CN201710900830.3A CN201710900830A CN107652509A CN 107652509 A CN107652509 A CN 107652509A CN 201710900830 A CN201710900830 A CN 201710900830A CN 107652509 A CN107652509 A CN 107652509A
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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
- C08K3/02—Elements
- C08K3/08—Metals
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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
- C08K3/38—Boron-containing compounds
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/068—Ultra high molecular weight polyethylene
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- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A kind of lead-boron polythene composite material and preparation method thereof, the invention belongs to technical field of nuclear radiation protection, and in particular to a kind of composite shielding material and preparation method thereof.The present invention is to solve current material functional particles size is big, the spread is small, poor with the interface cohesion of base polyethylene, the problem of so as to cause calorifics, mechanics and shielding properties deficiency.Lead-boron polythene composite material is made up of 55~70 parts of polyethylene, 30~60 parts of lead and 0.01~5 part of boron in parts by weight.Method：First, dispensing；2nd, batch mixing；3rd, precompressed；4th, preheat；5th, it is compressing.The present invention is applied to nuclear power, nuclear power, space radiation protection.
Description
Technical field
The invention belongs to technical field of nuclear radiation protection, and in particular to a kind of composite shielding material and preparation method thereof.
Background technology
Nuclear energy has been had been to be concerned by more and more people as environmentally friendly, the efficient energy, it be widely used in nuclear power, nuclear energy,
The fields such as military project, aerospace, medical treatment.It is well known that when nuclear reaction occurs, neutron, gamma-rays etc. can be discharged to human body, instrument
There is the ray of injury, therefore want to make nuclear reaction safer for mankind's service, it is necessary to which it is shielded.So with nuclear energy
With the extensive use of nuclear technology, the research and development of nuclear screening material turn into inexorable trend.
With extensive use of the nuclear energy in nuclear power field, nuclear reactor miniaturization is gradually suggested, therefore shielding material exists
While meeting nuclear screening performance, it is similarly important that the loss of weight of material subtracts type.Composite shielding materials with lead boron polythene material is a kind of biography
The shielding material of system, wherein polyethylene have higher hydrogen content, and hydrogen atom has good slowing down effect, boron original to fast neutron
Son can absorb thermal neutron, and lead atom to the fast neutron with certain energy in addition to having shielding action, to gamma-ray shielding
It is especially effective.Compared to other nuclear screening, lead-boron polythene is in addition to efficient nuclear screening performance, also with light weight, body
The characteristics of product is small.Its popularization contributes to the simplification of shielding construction, can mitigate the weight of shielding material, reduces the volume of material,
It can meet that the loss of weight of material subtracts type requirement, can be widely used in the fields such as nuclear power, nuclear power, space radiation protection.
But boron source used is boron carbide in traditional lead-boron polythene composite material, boron carbide particles quality is hard, wear-resisting,
Use frequently as abrasive material, therefore boron carbide particles adds the difficulty of processing of gained lead-boron polythene composite material.In addition, pass
The particle diameter in boron source used and lead source is larger in system lead-boron polythene composite material, and particularly lead source, particle diameter generally in grade, make
It is poor to obtain the interface cohesion of these functional particles and base polyethylene, causes material calorifics, mechanical property deficiency；Boron source and lead source
Particle diameter is big, makes its spread in polyethylene smaller, is also unfavorable for giving full play to for its shielding properties.
The content of the invention
The present invention is to solve current material functional particles size is big, the spread is small, the interface cohesion with base polyethylene
It is poor, the problem of so as to cause material calorifics, mechanics and shielding properties deficiency, and provide a kind of lead-boron polythene composite material and
Its preparation method.
A kind of lead-boron polythene composite material is in parts by weight by 55~70 parts of polyethylene, 30~60 parts of lead and 0.01~5
Part boron composition.
What a kind of preparation method of lead-boron polythene composite material was specifically realized by the following steps：
First, dispensing：55~70 parts of polyethylene, 30~60 parts of lead and 0.01~5 part of boron are weighed in parts by weight；
2nd, batch mixing：55~70 parts of polyethylene, 30~60 parts of lead and 0.01~5 part of boron that step 1 is weighed carry out machinery
Mixed powder, obtains mixed powder；
3rd, precompressed：The mixed powder that step 2 is obtained is fitted into mould, is protected under conditions of pressure is 50~100MPa
3min~5min is pressed, is pressed into prefabricated section；
4th, preheat：By the prefabricated section that step 3 obtains together with mould temperature be 150 DEG C~250 DEG C under conditions of heat 1
~4h, obtain treating casting die；
5th, it is compressing：By forcing press step 4 is obtained treat casting die apply pressure, pressure be 250MPa~
10~20min is incubated under conditions of 300MPa, is cooled down, the demoulding, obtains lead-boron polythene composite material.
Advantage of the present invention：
The present invention using pure boron be used as neutron-absorbing constituent element, reduce obtained by lead-boron polythene composite material difficult processing
Degree；Using nanoscale or submicron order simple substance lead powder and boron powder, there is more preferable interface binding power between polyethylene, and add
The spread of functional particles in the composite, so as to improve the consistency of composite, mechanical property and heat resistance, simultaneously
Make composite that there is more preferable neutron and gamma ray shielding performance.
Embodiment
Embodiment one：A kind of lead-boron polythene composite material of present embodiment is poly- by 55~70 parts in parts by weight
Ethene, 30~60 parts of lead and 0.01~5 part of boron composition.
Embodiment two：Present embodiment is unlike embodiment one：The polyethylene is high density
One kind or wherein several mixing in polyethylene, High molecular weight polyethylene and ultra-high molecular weight polyethylene.Other and specific reality
It is identical to apply mode one.
Embodiment three：Present embodiment is unlike embodiment one or two：The lead is elementary lead
Powder, particle diameter are 50nm~1 μm.Other are identical with embodiment one or two.
Embodiment four：Unlike one of present embodiment and embodiment one to three：The boron is single
Matter boron powder, particle diameter are 50nm~1 μm.Other are identical with one of embodiment one to three.
Embodiment five：Unlike one of present embodiment and embodiment one to four：The lead boron gathers
Ethene composite is made up of 55~70 parts of polyethylene, 50~60 parts of lead and 0.01~5 part of boron in parts by weight.Other with it is specific
One of embodiment one to four is identical.
Embodiment six：A kind of preparation method of lead-boron polythene composite material of present embodiment is specifically by following
What step was completed：
First, dispensing：55~70 parts of polyethylene, 30~60 parts of lead and 0.01~5 part of boron are weighed in parts by weight；
2nd, batch mixing：55~70 parts of polyethylene, 30~60 parts of lead and 0.01~5 part of boron that step 1 is weighed carry out machinery
Mixed powder, obtains mixed powder；
3rd, precompressed：The mixed powder that step 2 is obtained is fitted into mould, is protected under conditions of pressure is 50~100MPa
3min~5min is pressed, is pressed into prefabricated section；
4th, preheat：By the prefabricated section that step 3 obtains together with mould temperature be 150 DEG C~250 DEG C under conditions of heat 1
~4h, obtain treating casting die；
5th, it is compressing：By forcing press step 4 is obtained treat casting die apply pressure, pressure be 250MPa~
10~20min is incubated under conditions of 300MPa, is cooled down, the demoulding, obtains lead-boron polythene composite material.
Embodiment seven：Present embodiment is unlike embodiment six：In step 1 in parts by weight
Weigh 55~70 parts of polyethylene, 50~60 parts of lead and 0.01~5 part of boron.Other are identical with embodiment six.
Embodiment eight：Present embodiment is unlike embodiment six or seven：In step 1 by weight
Number weighs 65 parts of polyethylene, 30 parts of lead and 5 parts of boron.Other are identical with embodiment six or seven.
Embodiment nine：Unlike one of present embodiment and embodiment six to eight：Institute in step 1
Polyethylene is stated as one kind in high density polyethylene (HDPE), High molecular weight polyethylene and ultra-high molecular weight polyethylene or wherein several mixed
Close；The lead is simple substance lead powder, and particle diameter is 50nm~1 μm；The boron is pure boron powder, and particle diameter is 50nm~1 μm.Other and tool
One of body embodiment six to eight is identical.
Embodiment ten：Unlike one of present embodiment and embodiment six to nine：It is in step 3
The pressurize 5min under conditions of pressure is 80MPa.Other are identical with one of embodiment six to nine.
Beneficial effects of the present invention are verified using following examples：
Embodiment one：What a kind of preparation method of lead-boron polythene composite material was specifically realized by the following steps：
First, dispensing：65 parts of polyethylene, 30 parts of lead and 5 parts of boron are weighed in parts by weight；
2nd, batch mixing：65 parts of polyethylene, 30 parts of lead and the 5 parts of boron that step 1 is weighed carry out powder mixing machine, obtain mixed powder
Material；
3rd, precompressed：The mixed powder that step 2 is obtained is fitted into mould, the pressurize under conditions of pressure is 60MPa
5min, it is pressed into prefabricated section；
4th, preheat：By the prefabricated section that step 3 obtains together with mould temperature be 220 DEG C under conditions of heat 2h, obtain
Treat casting die；
5th, it is compressing：Treat that casting die applies pressure by what forcing press obtained to step 4, in the bar that pressure is 250MPa
10min is incubated under part, is cooled down, the demoulding, obtains lead-boron polythene composite material.
The performance indications of lead-boron polythene composite material are obtained by the present embodiment：Density：1.400g/cm3, porosity is
0.5%；Shore D hardness：70；Tensile strength 26.4MPa, elongation percentage 67%；140.5 DEG C of Vicat softening point；
Neutron shield performance：Use neutron energy be 0.042 ± 0.01eV pulsed nuclear reactor to the present invention lead
Boron polythene composite material carries out neutron shield performance test, test result such as table 1.
The neutron shield performance of the material of table 1
Gamma ray shielding performance：Using60Co radiation sources carry out gamma ray shielding performance test to material, and ray energy is
1.17MeV, 1.33MeV, dosage are 300Gy or so, irradiate 50h, test result such as table 2.
The gamma ray shielding performance of the material of table 2
Claims (10)
1. a kind of lead-boron polythene composite material, it is characterised in that lead-boron polythene composite material is in parts by weight by 55~70 parts
Polyethylene, 30~60 parts of lead and 0.01~5 part of boron composition.
2. a kind of lead-boron polythene composite material according to claim 1, it is characterised in that the polyethylene is high density
One kind or wherein several mixing in polyethylene, High molecular weight polyethylene and ultra-high molecular weight polyethylene.
3. a kind of lead-boron polythene composite material according to claim 1, it is characterised in that the lead is simple substance lead powder, grain
Footpath is 50nm~1 μm.
4. a kind of lead-boron polythene composite material according to claim 1, it is characterised in that the boron is pure boron powder, grain
Footpath is 50nm~1 μm.
5. a kind of lead-boron polythene composite material according to claim 1, it is characterised in that the lead-boron polythene is compound
Material is made up of 55~70 parts of polyethylene, 50~60 parts of lead and 0.01~5 part of boron in parts by weight.
A kind of 6. preparation method of lead-boron polythene composite material as claimed in claim 1, it is characterised in that lead-boron polythene
What the preparation method of composite was specifically realized by the following steps：
First, dispensing：55~70 parts of polyethylene, 30~60 parts of lead and 0.01~5 part of boron are weighed in parts by weight；
2nd, batch mixing：55~70 parts of polyethylene, 30~60 parts of lead and 0.01~5 part of boron that step 1 is weighed carry out powder mixing machine,
Obtain mixed powder；
3rd, precompressed：The mixed powder that step 2 is obtained is fitted into mould, the pressurize under conditions of pressure is 50~100MPa
3min~5min, it is pressed into prefabricated section；
4th, preheat：By the prefabricated section that step 3 obtains together with mould temperature be 150 DEG C~250 DEG C under conditions of heating 1~
4h, obtain treating casting die；
5th, it is compressing：Treat that casting die applies pressure by what forcing press obtained to step 4, be 250MPa~300MPa in pressure
Under conditions of be incubated 10~20min, cool down, the demoulding, obtain lead-boron polythene composite material.
7. the preparation method of a kind of lead-boron polythene composite material according to claim 6, it is characterised in that in step 1
55~70 parts of polyethylene, 50~60 parts of lead and 0.01~5 part of boron are weighed in parts by weight.
8. the preparation method of a kind of lead-boron polythene composite material according to claim 6, it is characterised in that in step 1
65 parts of polyethylene, 30 parts of lead and 5 parts of boron are weighed in parts by weight.
9. the preparation method of a kind of lead-boron polythene composite material according to claim 6, it is characterised in that in step 1
The polyethylene is one kind or wherein several in high density polyethylene (HDPE), High molecular weight polyethylene and ultra-high molecular weight polyethylene
Mixing；The lead is simple substance lead powder, and particle diameter is 50nm~1 μm；The boron is pure boron powder, and particle diameter is 50nm~1 μm.
10. the preparation method of a kind of lead-boron polythene composite material according to claim 6, it is characterised in that in step 3
It is the pressurize 5min under conditions of pressure is 80MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710900830.3A CN107652509A (en) | 2017-09-28 | 2017-09-28 | A kind of lead-boron polythene composite material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710900830.3A CN107652509A (en) | 2017-09-28 | 2017-09-28 | A kind of lead-boron polythene composite material and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110951135A (en) * | 2019-09-04 | 2020-04-03 | 陈淑萍 | Preparation method of thin-wall high-performance lead-boron-polyethylene composite nuclear shielding material |
| CN112961423A (en) * | 2021-02-23 | 2021-06-15 | 中国核动力研究设计院 | Lead-boron polyethylene plate and size control method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1746217A (en) * | 2005-10-21 | 2006-03-15 | 北京市射线应用研究中心 | Composite shielding materials with lead boron polythene material and preparation thereof |
| CN103183861A (en) * | 2013-03-21 | 2013-07-03 | 中国船舶重工集团公司第七一九研究所 | Composite shielding material with neutorn-gamma comprehensive shielding effect |
-
2017
- 2017-09-28 CN CN201710900830.3A patent/CN107652509A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1746217A (en) * | 2005-10-21 | 2006-03-15 | 北京市射线应用研究中心 | Composite shielding materials with lead boron polythene material and preparation thereof |
| CN103183861A (en) * | 2013-03-21 | 2013-07-03 | 中国船舶重工集团公司第七一九研究所 | Composite shielding material with neutorn-gamma comprehensive shielding effect |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110951135A (en) * | 2019-09-04 | 2020-04-03 | 陈淑萍 | Preparation method of thin-wall high-performance lead-boron-polyethylene composite nuclear shielding material |
| CN112961423A (en) * | 2021-02-23 | 2021-06-15 | 中国核动力研究设计院 | Lead-boron polyethylene plate and size control method |
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Application publication date: 20180202 |