CN109085640B - Packaging method of organic scintillation crystal - Google Patents
Packaging method of organic scintillation crystal Download PDFInfo
- Publication number
- CN109085640B CN109085640B CN201810950793.1A CN201810950793A CN109085640B CN 109085640 B CN109085640 B CN 109085640B CN 201810950793 A CN201810950793 A CN 201810950793A CN 109085640 B CN109085640 B CN 109085640B
- Authority
- CN
- China
- Prior art keywords
- packaging shell
- scintillation crystal
- packaging
- organic scintillation
- organic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
Abstract
The invention discloses a packaging method of an organic scintillation crystal, which comprises the steps of silicon rubber pouring, organic scintillation crystal placement, vacuum exhaust molding and room temperature radiation curing. The packaging method of the organic scintillation crystal can save the processing step of the organic scintillation crystal, reduce the reduction of the volume of the organic scintillation crystal and the reduction of the fluorescence intensity caused by processing, and the poured silicon rubber not only can realize the fixation of the organic scintillation crystal, but also can enhance the shock resistance of the organic scintillation crystal.
Description
Technical Field
The invention belongs to the field of radiation protection and detection, and particularly relates to a packaging method of an organic scintillation crystal.
Background
The organic scintillation crystal has excellent photoelectric property, faster luminous attenuation and higher luminous efficiency, so that the organic scintillation crystal has higher detection efficiency on neutrons and gamma rays. And some organic scintillation crystals have excellent neutron/gamma ray pulse shape resolution capability and have good application prospect in neutron detection. However, the growth conditions of the organic scintillation crystal are harsh, and it is difficult to grow a large-volume high-quality perfect crystal, which is still a research difficulty in this field.
The solution method is a common method for growing organic scintillation crystals, and is a method that firstly, constituent elements (solute) of the crystals are dissolved in another solution (solvent), then a saturated solution is obtained by changing state parameters such as temperature, vapor pressure and the like, and finally the solute is precipitated from the solution to form the crystals. The organic scintillation crystal grown by the solution method is usually small in size and irregular in shape, at present, the organic scintillation crystal is required to be sealed in a cylindrical packaging shell for radiation detection, and the organic scintillation crystal is required to be processed into a cylinder. Because the interaction force among organic molecules is weaker, the organic scintillation crystal is fragile, the processing difficulty is high, the processing yield is low, irregular edges and corners can be cut off in the processing process, the effective volume of the crystal is greatly reduced, the fluorescence intensity is obviously reduced, and the detection efficiency is reduced accordingly.
Currently, there is a need to develop a new encapsulation method for organic scintillation crystals suitable for radiation detection.
Disclosure of Invention
The invention aims to provide a packaging method of an organic scintillation crystal.
The packaging method of the organic scintillation crystal comprises the following steps:
a. pouring silicone rubber
Stably placing the packaging shell with the reflecting layer attached to the inner wall, and pouring silicon rubber into the packaging shell, wherein the volume of the silicon rubber is slightly larger than the difference between the volume of the packaging shell and the volume of the organic scintillation crystal;
b. organic scintillation crystal placement
Placing the organic scintillation crystal in the raw silicone rubber in a packaging shell;
c. vacuum exhaust forming
Vacuumizing the silicon rubber raw rubber in the packaging shell until air bubbles are completely removed; translating the packaging shell into a vacuum drying oven, closing the vacuum drying oven, vacuumizing below 60 ℃, and confirming that the organic scintillation crystal sinks and is stably embedded in the silicon rubber crude rubber; covering a protective film on the upper surface of the packaging shell, and continuously vacuumizing until bubbles are completely removed; taking out the packaging shell, and removing the raw silicone rubber overflowing on the outer wall of the packaging shell;
d. room temperature radiation curing
And (3) carrying out integral plastic package on the packaging shell, simultaneously ensuring the bottom surface of the packaging shell to be stable, placing the packaging shell in a gamma radiation field, irradiating at room temperature until the silicon rubber in the packaging shell is completely cured, then taking out the packaging shell from the gamma radiation field, and dismantling the plastic package of the packaging shell.
The raw silicone rubber is methyl vinyl silicone rubber raw rubber or methyl vinyl phenyl silicone rubber.
The packaging shell is cylindrical, one end of the packaging shell is a closed end, and the other end of the packaging shell is an open end.
The inner wall of the packaging shell is covered with a reflecting layer, and the surface of the reflecting layer is smooth; the reflecting layer is made of one of polytetrafluoroethylene, titanium dioxide, magnesium oxide or aluminum oxide.
The organic scintillation crystal is a monocrystal grown by a solution method, the surface of the organic scintillation crystal is flat and smooth, and the side with larger surface area and better scintillation performance faces upwards and is placed in the packaging shell.
The protective film is a transparent optical film, the size of the optical film is the same as that of the opening end of the packaging shell, and the optical film is made of optical glass or colorless transparent plastic.
According to the packaging method of the organic scintillation crystal, the raw silicone rubber is not added with a catalyst in the room-temperature radiation curing process, so that a secondary reaction between metal elements contained in the catalyst and rays is avoided; the optical film selected in the packaging method of the organic scintillation crystal has good light transmittance to light near the emission wavelength of the crystal, has certain hardness and scratch resistance, and protects silicon rubber from being bonded with dust and being scratched and damaged.
The packaging method of the organic scintillation crystal omits the processing step of the organic scintillation crystal, reduces the reduction of the volume of the organic scintillation crystal and the reduction of the fluorescence intensity caused by processing, and the poured silicon rubber not only can realize the fixation of the organic scintillation crystal, but also can enhance the shock resistance of the organic scintillation crystal.
Drawings
FIG. 1 is a schematic structural diagram of a packaged product of the packaging method for an organic scintillation crystal according to the present invention;
in the figure, 1, a protective film 2, a packaging shell 3, a reflecting layer 4, an organic scintillation crystal 5 and silicon rubber are arranged.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Example 1
This example is the encapsulation of a single crystal of 9, 10-diphenylanthracene.
a. Pouring silicone rubber
Cleaning and drying the cylindrical stainless steel packaging shell with the titanium dioxide film attached to the inner wall, placing stably, and pouring a certain volume of methyl vinyl silicone rubber crude rubber into the packaging shell, wherein the volume of the crude rubber is slightly larger than the volume difference between the packaging shell and the crystal.
b. Organic scintillation crystal placement
The 9, 10-diphenyl anthracene monocrystal is horizontally placed at the right center of the upper part of the crude silicone rubber, and the (1,1, -1) crystal face of the 9, 10-diphenyl anthracene monocrystal faces upwards and is parallel to the upper surface of the packaging shell.
c. Vacuum exhaust forming
Carefully translating a packaging shell containing the raw silicon rubber and the 9, 10-diphenylanthracene single crystal inside, placing the packaging shell in a vacuum drying oven, slowly heating to below 60 ℃, vacuumizing for 5 hours, then opening the vacuum drying oven, and confirming that the 9, 10-diphenylanthracene single crystal sinks and is stably embedded in the raw silicon rubber; at this time, a transparent K9 optical glass sheet with a thickness of 0.5mm is taken as a protective film and is flatly placed on the upper surface of the packaging shell, the packaging shell is placed in a vacuum drying oven again, the vacuum drying oven is vacuumized at the temperature of below 60 ℃, the packaging shell is taken out after 1 hour, and the silicon rubber crude rubber overflowing from the outer surface of the packaging shell is carefully removed.
d. Room temperature radiation curing
And (3) plastic packaging the whole packaging shell, ensuring the bottom surface of the packaging shell to be stable, placing the packaging shell in a gamma radiation field, irradiating at room temperature to ensure that the total absorbed dose reaches 50kGy, completely curing the raw silicone rubber, taking out the packaging shell, removing the plastic packaging of the packaging shell, and completing the packaging of the 9, 10-diphenylanthracene monocrystal, wherein the structure of the obtained packaging finished product is shown in figure 1.
The raw methyl vinyl silicone rubber of the embodiment can be replaced by methyl vinyl phenyl silicone rubber, the material of the reflecting layer can be replaced by one of polytetrafluoroethylene, magnesium oxide or aluminum oxide, and the material of the optical film can be replaced by colorless transparent plastic.
The present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make various modifications without creative efforts from the above-described conception, and fall within the scope of the present invention.
Claims (6)
1. A method for packaging an organic scintillation crystal, comprising the steps of:
a. pouring silicone rubber
Stably placing the packaging shell with the reflecting layer attached to the inner wall, and pouring silicon rubber into the packaging shell, wherein the volume of the silicon rubber is slightly larger than the difference between the volume of the packaging shell and the volume of the organic scintillation crystal;
b. organic scintillation crystal placement
Placing the organic scintillation crystal in the raw silicone rubber in a packaging shell;
c. vacuum exhaust forming
Vacuumizing the silicon rubber raw rubber in the packaging shell until air bubbles are completely removed; translating the packaging shell into a vacuum drying oven, closing the vacuum drying oven, vacuumizing below 60 ℃, and confirming that the organic scintillation crystal sinks and is stably embedded in the silicon rubber crude rubber; covering a protective film on the upper surface of the packaging shell, and continuously vacuumizing until bubbles are completely removed; taking out the packaging shell, and removing the raw silicone rubber overflowing on the outer wall of the packaging shell;
d. room temperature radiation curing
And (3) carrying out integral plastic package on the packaging shell, simultaneously ensuring the bottom surface of the packaging shell to be stable, placing the packaging shell in a gamma radiation field, irradiating at room temperature until the silicon rubber in the packaging shell is completely cured, then taking out the packaging shell from the gamma radiation field, and dismantling the plastic package of the packaging shell.
2. The method of packaging an organic scintillation crystal of claim 1, wherein: the raw silicone rubber is methyl vinyl silicone rubber raw rubber or methyl vinyl phenyl silicone rubber.
3. The method of packaging an organic scintillation crystal of claim 1, wherein: the packaging shell is cylindrical, one end of the packaging shell is a closed end, and the other end of the packaging shell is an open end.
4. The method of packaging an organic scintillation crystal of claim 1, wherein: the inner wall of the packaging shell is covered with a reflecting layer, and the surface of the reflecting layer is smooth; the reflecting layer is made of one of polytetrafluoroethylene, titanium dioxide, magnesium oxide or aluminum oxide.
5. The method of packaging an organic scintillation crystal of claim 1, wherein: the organic scintillation crystal is a monocrystal grown by a solution method, the surface of the organic scintillation crystal is flat and smooth, and the side with larger surface area and better scintillation performance faces upwards and is placed in the packaging shell.
6. The method of packaging an organic scintillation crystal of claim 1, wherein: the protective film is a transparent optical film, the size of the optical film is the same as that of the opening end of the packaging shell, and the optical film is made of optical glass or colorless transparent plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810950793.1A CN109085640B (en) | 2018-08-21 | 2018-08-21 | Packaging method of organic scintillation crystal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810950793.1A CN109085640B (en) | 2018-08-21 | 2018-08-21 | Packaging method of organic scintillation crystal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109085640A CN109085640A (en) | 2018-12-25 |
| CN109085640B true CN109085640B (en) | 2022-02-08 |
Family
ID=64793895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810950793.1A Active CN109085640B (en) | 2018-08-21 | 2018-08-21 | Packaging method of organic scintillation crystal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109085640B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114779392B (en) * | 2022-06-23 | 2022-09-06 | 江苏欧辉照明灯具有限公司 | Adjustable lamp light guide plate processing device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102016638A (en) * | 2008-05-06 | 2011-04-13 | 圣戈本陶瓷及塑料股份有限公司 | Radiation detector device having an electrically conductive optical interface |
| CN102944891A (en) * | 2012-11-22 | 2013-02-27 | 北京一轻研究院 | Packaging method for cerium-doped halogenated lanthanum scintillation crystal |
| CN204347266U (en) * | 2015-01-21 | 2015-05-20 | 北京玻璃研究院 | The moistureproof encapsulating structure of hydroscopicity scintillation crystal |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7977646B2 (en) * | 2008-04-17 | 2011-07-12 | Saint-Gobain Ceramics & Plastics, Inc. | Scintillation detector reflector |
-
2018
- 2018-08-21 CN CN201810950793.1A patent/CN109085640B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102016638A (en) * | 2008-05-06 | 2011-04-13 | 圣戈本陶瓷及塑料股份有限公司 | Radiation detector device having an electrically conductive optical interface |
| CN103336294A (en) * | 2008-05-06 | 2013-10-02 | 圣戈本陶瓷及塑料股份有限公司 | Radiation detector device having an electrically conductive optical interface |
| CN102944891A (en) * | 2012-11-22 | 2013-02-27 | 北京一轻研究院 | Packaging method for cerium-doped halogenated lanthanum scintillation crystal |
| CN204347266U (en) * | 2015-01-21 | 2015-05-20 | 北京玻璃研究院 | The moistureproof encapsulating structure of hydroscopicity scintillation crystal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109085640A (en) | 2018-12-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109085640B (en) | Packaging method of organic scintillation crystal | |
| US20120012161A1 (en) | Method for producing a solar cell module, and solar cell module produced by the method | |
| EP3640997A1 (en) | Packaging structure and method of film photovoltaic component | |
| CN102621761A (en) | Electronic paper display device and manufacturing method thereof | |
| CN110197865A (en) | A kind of deep ultraviolet LED packaging of liquid-packing and preparation method thereof | |
| CN206734886U (en) | A kind of quartz ware transports placing box | |
| CN1266470A (en) | Glass panel | |
| KR101619610B1 (en) | Apparatus and method for growing large diameter single crystal | |
| CN102496650A (en) | Manufacturing method of solar battery module and solar battery module | |
| CN103971939A (en) | Potting and packaging method for dye-sensitized solar cell module | |
| CN205865772U (en) | Freezing carrier of preserving of oocyte and embryonal glass ization | |
| CN211494947U (en) | Moisture-proof packaging structure of hygroscopic scintillation crystal | |
| JP6273781B2 (en) | Cell culture container and cell culture method | |
| KR101438183B1 (en) | Fabricating method for solar cell module using jig and solar cell module fabricated by the same | |
| KR101661936B1 (en) | Advanced phoswich detector for surface alpha rejection and moisture protection and manufacturing method of the same | |
| CN113311471B (en) | Method for bonding windowless silicon photodiode and detector crystal | |
| CN201362443Y (en) | Vacuum container for storing barley pests | |
| CN215440427U (en) | Culture dish for slow virus packaging with good protection performance | |
| CN204399761U (en) | Storage insect vacuum reservoir | |
| CN215365804U (en) | Cell culture tube | |
| CN208279716U (en) | It is a kind of for growing the crucible of sodium iodide crystal | |
| CN203192799U (en) | Substrate packaging apparatus | |
| KR101930970B1 (en) | Vacuum solar thermal panel provided with an internal pressure indicator | |
| CN208119682U (en) | A kind of moisture-proof classifiable candy wrapping tank | |
| CN218203040U (en) | Lens rack for optical lens piece vacuum coating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Xiuhua Inventor after: Song Hongtao Inventor after: Tan Zhaoyi Inventor after: Lai Caifeng Inventor after: Zhu Tonghua Inventor after: Mu Long Inventor after: Li Yu Inventor before: Liu Xiuhua Inventor before: Song Hongtao Inventor before: Tan Zhaoyi Inventor before: Lai Caifeng Inventor before: Zhu Tonghua Inventor before: Mu Long Inventor before: Li Yu |
|
| CB03 | Change of inventor or designer information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |