CN108084769A - A kind of high-temperature-resistant shielding putty and preparation method thereof of anti-neutron, gamma - Google Patents
A kind of high-temperature-resistant shielding putty and preparation method thereof of anti-neutron, gamma Download PDFInfo
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- CN108084769A CN108084769A CN201810119409.3A CN201810119409A CN108084769A CN 108084769 A CN108084769 A CN 108084769A CN 201810119409 A CN201810119409 A CN 201810119409A CN 108084769 A CN108084769 A CN 108084769A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/34—Filling pastes
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Abstract
The present invention relates to nuclear radiation protection fields, high-temperature-resistant shielding putty of a kind of anti-neutron, gamma and preparation method thereof is provided, the anti-neutron of the present invention, the basis material of high-temperature-resistant shielding putty of gamma are phenol aldehyde modified epoxy resin, the characteristic of the highly cross-linked structure of its excellent adhesion and phenolic resin with epoxy resin, there is excellent creep-resistant property at high temperature, can be used continuously at 260 DEG C.Shielding additive is with the addition of in the high-temperature-resistant shielding putty of anti-neutron, gamma simultaneously, effectively increases the problem of tradition shields putty neutron, gamma screening ability is insufficient, putty is shielded after the curing of 2cm thickness can absorb at least 96% thermal neutron, make252The neutron dose rate of Cf isotope neutron sources reduces by more than 70%, makes60The gamma dose rate in Co gamma radiations source reduces by more than 10%, can support personnel, equipment and environment radiation safety.
Description
Technical field
The present invention relates to nuclear radiation protection field, specifically a kind of anti-neutron, gamma high-temperature-resistant shielding putty and
Its preparation method, for the radiation protection of nuclear reactor, electron accelerator, isotope radioactive source, naval nuclear power plant etc..
Background technology
With the nuclear power energy and extensive use of the radioactive nucleus technology in human being's production, life and national defence, by
This all kinds of neutron generated, gamma radiation protection have become a major issue urgently to be resolved hurrily and perfect.
In addition to concrete, common neutron, gamma shielding material have polyethylene, Boron-containing-PE, boron steel, lead, lead
The various plates such as boron polyethylene are generally fixed on by splicing the form of installation on the structural support around radioactive source.But
Above-mentioned shielding plate is inevitably present with the gap of 1mm ~ 2mm in installation process, so as to cause even more than ten times of several times of dosage
Increase, serious radiation hazradial bundle is caused to personnel, equipment and environment.Therefore, it is necessary to it develops a kind of with neutron, gamma synthesis
The shielding putty of shield effectiveness, for shielding the filling in gap and bonding between plate and plate and structure, weakening or avoiding passing through
Radiation is worn, effectively enhances bulk shielding ability.Meanwhile the type shielding putty also needs to have certain viscosity and rapid shaping
Ability can pour construction irregular area or radiation source surrounding conduit and slit etc. around reactor and be difficult to shield construction
Position for simplifying site operation difficulty, promotes the shielding protection effect in the region.
On the other hand, the environment temperatures such as main pipe and slit are higher around reactor, particularly when reactor occurs to break
During mouth loss of-coolant accident (LOCA), cooling agent leakage will cause temperature in containment to be sharply increased, and general shielding material may be because of softening
It is deformed and gap, the decline of shield effectiveness is caused even to be failed, there are radiation safety hidden danger.Therefore, for the screen of protection
Preferable heat resistance should also be had by covering putty, disclosure satisfy that the normal use of hot environment.
The content of the invention
The technical problems to be solved by the invention are to overcome the existing shielding in the fields such as existing nuclear power through seam, shielding construction
The series of problems such as difficult and shielding non-refractory, provide high-temperature-resistant shielding putty of a kind of anti-neutron, gamma and preparation method thereof,
The putty can be used in the filling in gap and the pouring construction of irregular area, and neutron dose rate is made to reduce by more than 50%, makes gamma
Dosage rate reduces by more than 40%, and be resistant to 200 DEG C of high temperature, effective guarantee nuclear power unit normal operation and accident work
Shielding protection ability under condition.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme that.
The high-temperature-resistant shielding putty of a kind of anti-neutron, gamma is made of, respectively the first component, second component and the third component that dispense
The ingredient and weight ratio of component are as follows：
7 ~ 25 parts of first component is basis material and processing aid；
3.5 ~ 12.5 parts of second component is curing agent；
Third 62.5 ~ 89.5 parts of component, to shield additive.
Preferably, the first component is by 55 ~ 57 parts by weight of epoxy resin, 24 ~ 26 parts by weight of phenolic resin, and polysulfone resin 5 ~
9 parts by weight and 12 parts by weight of processing aid composition.
Preferably, the processing aid includes antifoaming agent, advection agent, dispersant, accelerating agent.
Preferably, the second component is representative examples of saturated aliphatic aminated compounds.
Preferably, third component is by 16.1 ~ 89.9 parts by weight of lead powder of 100 μm of grain size, 5.6 ~ 8.1 weight of boron carbide powder
Part, 4.5 ~ 75.8 parts by weight of high density polyethylene (HDPE) powder composition.
Meanwhile the present invention also provides a kind of such as the preparation method of foregoing anti-neutron, the high-temperature-resistant shielding putty of gamma：It presses
Parts by weight extracting epoxy resin, phenolic resin, polysulfone resin and processing aid are uniformly mixed, and first component are made, second component is solid
Agent takes lead powder, boron carbide powder and high density polyethylene (HDPE) powder to be uniformly mixed in parts by weight, and the third component, first component, second group is made
Divide and the third component is packed respectively.
Preferably, above-mentioned preparation method：Polysulfone resin is taken to add in epoxy resin in parts by weight and is mixed and heated to 140 DEG C,
3 ~ 5min is stirred with the rate of 1000 ~ 1500r/min, phenolic resin is added in after polysulfone resin is entirely molten, continues 3 ~ 5min of stirring,
Be uniformly dispersed, be made anti-neutron, gamma high-temperature-resistant shielding putty first component.
Preferably, above-mentioned preparation method：Lead powder, boron carbide powder and high density polyethylene (HDPE) powder, loading is taken to stir in parts by weight
Mix machine, 30min stirred with the rate of 300r/min, is uniformly dispersed, be made anti-neutron, third group of high-temperature-resistant shielding putty of gamma
Point.
Basis material in the present invention is phenol aldehyde modified epoxy resin, it has the excellent adhesion and phenolic aldehyde of epoxy resin
The characteristic of the highly cross-linked structure of resin at high temperature with excellent creep-resistant property, can be used continuously at 260 DEG C.Together
When anti-neutron, gamma high-temperature-resistant shielding putty in be with the addition of shielding additive, effectively increase tradition shielding putty neutron, gal
The problem of agate screening ability is insufficient, putty is shielded after the curing of 2cm thickness can absorb at least 96% thermal neutron, make252Cf is same
The neutron dose rate of the plain neutron source in position reduces by more than 70%, makes60The gamma dose rate in Co gamma radiations source reduces by more than 10%.With showing
There is technology to compare, the anti-neutron of the present invention, the high-temperature-resistant shielding putty tolerable temperature of gamma disclosure satisfy that core moves at 200 DEG C or more
Safe and reliable use under power apparatus normal operation and design basis accident, density are light and with more efficient neutron, gamma
Comprehensive shielded protective capacities disclosure satisfy that the radiation protection demand of different radiation fields, can support personnel, equipment and environment radiation
Safety.
Specific embodiment
With reference to specific embodiment, the invention will be further described.
Embodiment 1：
A kind of anti-neutron of table 1, the high-temperature-resistant shielding putty of gamma
Preparation method：By the parts by weight in table 1, polysulfone resin is taken to add in bisphenol A type epoxy resin and is mixed and heated to 140 DEG C,
3 ~ 5min is stirred with the rate of 1000 ~ 1500r/min, phenolic resin is added in after polysulfone resin is entirely molten, continues 3 ~ 5min of stirring,
Be uniformly dispersed, be made anti-neutron, gamma high-temperature-resistant shielding putty first component.Second component is curing agent.Take lead powder, boron carbide
Powder and high density polyethylene (HDPE) powder are packed into mixer, stir 30min with the rate of 300r/min, are uniformly dispersed, obtained anti-neutron,
Third component of the high-temperature-resistant shielding putty of gamma.In use, first component, second component and the third component are uniformly mixed.
Embodiment 2：
A kind of anti-neutron of table 2, the high-temperature-resistant shielding putty of gamma
Preparation method：By the parts by weight in table 2, polysulfone resin is taken to add in bisphenol A type epoxy resin and is mixed and heated to 140 DEG C,
3 ~ 5min is stirred with the rate of 1000 ~ 1500r/min, phenolic resin is added in after polysulfone resin is entirely molten, continues 3 ~ 5min of stirring,
Be uniformly dispersed, be made anti-neutron, gamma high-temperature-resistant shielding putty first component.Second component is curing agent.Take lead powder, boron carbide
Powder and high density polyethylene (HDPE) powder are packed into mixer, stir 30min with the rate of 300r/min, are uniformly dispersed, obtained anti-neutron,
Third component of the high-temperature-resistant shielding putty of gamma.In use, first component, second component and the third component are uniformly mixed.
Embodiment 3：
A kind of anti-neutron of table 3, the high-temperature-resistant shielding putty of gamma
Preparation method：By the parts by weight in table 3, polysulfone resin is taken to add in bisphenol A type epoxy resin and is mixed and heated to 140 DEG C,
3 ~ 5min is stirred with the rate of 1000 ~ 1500r/min, phenolic resin is added in after polysulfone resin is entirely molten, continues 3 ~ 5min of stirring,
Be uniformly dispersed, be made anti-neutron, gamma high-temperature-resistant shielding putty first component.Second component is curing agent.Take lead powder, boron carbide
Powder and high density polyethylene (HDPE) powder are packed into mixer, stir 30min with the rate of 300r/min, are uniformly dispersed, obtained anti-neutron,
Third component of the high-temperature-resistant shielding putty of gamma.In use, first component, second component and the third component are uniformly mixed.
Application effect is tested：
Shielding putty is made with the formula of 1 ~ embodiment of embodiment 3, neutron shield performance, gal are carried out according to corresponding national standard
The test of agate alpha ray shield performance, density, hardening time, heat distortion temperature, peel strength, shrinking percentage and appearance etc. is surveyed
Test result show anti-neutron, gamma high-temperature-resistant shielding putty properties it is excellent, specific targets are shown in Table 4.
The high-temperature-resistant shielding putty integrated performance index of 4 anti-neutron of table, gamma
The content that this specification is not described in detail belongs to the prior art well known to professional and technical personnel in the field.
Above example is used for illustrative purposes only rather than limitation of the present invention, the technology people in relation to technical field
Member, makes each kind conversion without departing from the spirit and scope of the present invention or modification also should be regarded as in guarantor of the invention
Within the scope of shield, limited by each claim.
Claims (8)
1. a kind of high-temperature-resistant shielding putty of anti-neutron, gamma, it is characterised in that：It is by dispense first component, second component and
Third component forms, and the ingredient and weight ratio of each component are as follows：
7 ~ 25 parts of first component is basis material and processing aid；
3.5 ~ 12.5 parts of second component is curing agent；
Third 62.5 ~ 89.5 parts of component, to shield additive.
2. the high-temperature-resistant shielding putty of anti-neutron according to claim 1, gamma, it is characterised in that：The first component by
55 ~ 57 parts by weight of epoxy resin, 24 ~ 26 parts by weight of phenolic resin, 12 parts by weight group of 5 ~ 9 parts by weight of polysulfone resin and processing aid
Into.
3. the high-temperature-resistant shielding putty of anti-neutron according to claim 1, gamma, it is characterised in that：The processing aid
Including antifoaming agent, advection agent, dispersant, accelerating agent.
4. the high-temperature-resistant shielding putty of anti-neutron according to claim 1, gamma, it is characterised in that：The second component is
Representative examples of saturated aliphatic aminated compounds.
5. the high-temperature-resistant shielding putty of anti-neutron according to claim 1, gamma, it is characterised in that：Third component by
16.1 ~ 89.9 parts by weight of lead powder that 100 μm of grain size, 5.6 ~ 8.1 parts by weight of boron carbide powder, 4.5 ~ 75.8 weight of high density polyethylene (HDPE) powder
Measure part composition.
6. a kind of preparation method of the high-temperature-resistant shielding putty of anti-neutron as described in any in claim 1 to 5, gamma,
It is characterized in that：Extracting epoxy resin, phenolic resin, polysulfone resin and processing aid are uniformly mixed in parts by weight, and first component is made,
Second component is curing agent, and lead powder, boron carbide powder and high density polyethylene (HDPE) powder is taken to be uniformly mixed in parts by weight, and the third component is made,
First component, second component and the third component are packed respectively.
7. the preparation method of the high-temperature-resistant shielding putty of anti-neutron according to claim 6, gamma, it is characterised in that：It presses
Parts by weight take polysulfone resin to add in epoxy resin and are mixed and heated to 140 DEG C, with the rate of 1000 ~ 1500r/min stirring 3 ~
5min, after polysulfone resin it is complete it is molten after add in phenolic resin, continue 3 ~ 5min of stirring, be uniformly dispersed, be made anti-neutron, gamma it is resistance to
The first component of high-temperature shielding putty.
8. the preparation method of the high-temperature-resistant shielding putty of anti-neutron according to claim 6, gamma, it is characterised in that：It presses
Parts by weight take lead powder, boron carbide powder and high density polyethylene (HDPE) powder, are packed into mixer, and 30min is stirred with the rate of 300r/min,
Be uniformly dispersed, be made anti-neutron, gamma high-temperature-resistant shielding putty the third component.
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| CN201810119409.3A CN108084769A (en) | 2018-02-06 | 2018-02-06 | A kind of high-temperature-resistant shielding putty and preparation method thereof of anti-neutron, gamma |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113416443A (en) * | 2021-08-03 | 2021-09-21 | 中国核动力研究设计院 | Shielding putty with adjustable fluidity, preparation method and application |
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|---|---|---|---|---|
| CN1052968A (en) * | 1989-12-29 | 1991-07-10 | 天津纺织工学院 | Neutron and gamma-radiation shielding material |
| 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 |
| CN103183928A (en) * | 2013-03-21 | 2013-07-03 | 中国船舶重工集团公司第七一九研究所 | High-temperature resisting shielding material with neutron shielding effect |
| CN104710727A (en) * | 2015-03-27 | 2015-06-17 | 中国科学院长春应用化学研究所 | Epoxy resin based neutron and gamma ray shielding composite material, as well as preparation method and application thereof |
| CN106810865A (en) * | 2017-01-20 | 2017-06-09 | 镇江亿清复合材料有限公司 | A kind of high temperature resistant composite with nuclear radiation shield effect |
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2018
- 2018-02-06 CN CN201810119409.3A patent/CN108084769A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1052968A (en) * | 1989-12-29 | 1991-07-10 | 天津纺织工学院 | Neutron and gamma-radiation shielding material |
| 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 |
| CN103183928A (en) * | 2013-03-21 | 2013-07-03 | 中国船舶重工集团公司第七一九研究所 | High-temperature resisting shielding material with neutron shielding effect |
| CN104710727A (en) * | 2015-03-27 | 2015-06-17 | 中国科学院长春应用化学研究所 | Epoxy resin based neutron and gamma ray shielding composite material, as well as preparation method and application thereof |
| CN106810865A (en) * | 2017-01-20 | 2017-06-09 | 镇江亿清复合材料有限公司 | A kind of high temperature resistant composite with nuclear radiation shield effect |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113416443A (en) * | 2021-08-03 | 2021-09-21 | 中国核动力研究设计院 | Shielding putty with adjustable fluidity, preparation method and application |
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