CN114559636A - Method and test system capable of monitoring optical performance of quantum dot color master batch in real time - Google Patents
Method and test system capable of monitoring optical performance of quantum dot color master batch in real time Download PDFInfo
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- CN114559636A CN114559636A CN202210232236.2A CN202210232236A CN114559636A CN 114559636 A CN114559636 A CN 114559636A CN 202210232236 A CN202210232236 A CN 202210232236A CN 114559636 A CN114559636 A CN 114559636A
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- 239000004595 color masterbatch Substances 0.000 title claims abstract description 149
- 238000012544 monitoring process Methods 0.000 title claims abstract description 41
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- 238000000034 method Methods 0.000 title claims abstract description 25
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
- B07C5/342—Sorting according to other particular properties according to optical properties, e.g. colour
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/36—Sorting apparatus characterised by the means used for distribution
- B07C5/361—Processing or control devices therefor, e.g. escort memory
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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Abstract
The invention provides a method and a test system capable of monitoring optical performance of a quantum dot color master batch in real time, which take an original pure quantum dot spectrum as a reference spectrum and sequentially and respectively monitor: the central wavelength, the half-peak width and the luminous intensity of the linear quantum dot color master batch at the extrusion outlet, the cooling treatment outlet and the air drying treatment outlet of the granulator; so as to judge whether the quality of the linear quantum dot color master batch is qualified. The method has the advantages that each stage of quantum dot color master batch production is monitored in real time, unqualified quantum dot color master batches are screened out in time, the problems of uneven color, large chromatic aberration, high detection cost and the like of the quantum dot color master batches are solved, and the uniformity and the qualification rate of the quantum dot color master batches are effectively improved.
Description
Technical Field
The invention belongs to the technical field of material testing, and particularly relates to a method and a testing system capable of monitoring optical performance of quantum dot color master batch in real time.
Background
The quantum dot is used as a brand new nano fluorescent material, also called as semiconductor nanocrystal, has the size of 1-10nm generally, and has excellent photoelectric characteristics of wide excitation spectrum, symmetrical distribution of emission spectrum, narrow width, adjustable color, high photochemical stability and the like. The blue light emitting diode is utilized to excite the red and green quantum dot mixture to generate white light, and the quantum dot has wide application in the fields of electroluminescent devices, photoluminescent devices, displays, solid-state lighting, biomedicine and the like.
The application of quantum dots in the field of photoluminescence has three main forms: firstly, quantum dispensing water is sealed on an LED chip; secondly, encapsulating the quantum dots in the glass tube, and then installing the quantum dots on the edge of the light guide plate; and thirdly, making the quantum dots into a quantum dot reinforced film and placing the quantum dot reinforced film on the upper surface of the light guide plate. The methods are that quantum dots are directly dispersed in a high polymer material to prepare quantum dot glue, and then the quantum dot glue is coated on an LED chip, packaged in a glass tube or coated into a membrane form.
However, the surface of the quantum dot generally contains ligands of amino, carboxyl, mercapto, phosphorus or phosphorus oxide to protect it from attack by water oxygen in the air. In the preparation process of the quantum dot glue, the ligand on the surface of the quantum dot is easy to fall off in the physical stirring process, so that the luminous efficiency of the quantum dot is reduced. In addition, due to the nonpolar ligand on the surface of the quantum dot, the quantum dot is not easy to disperse in common glue water on the market and cannot be stably stored for a long time in a use environment.
In order to solve the problems, the quantum dot color master batch can be prepared from a quantum dot material and a polymer material through a high-temperature melt extrusion molding method, so that the quantum dot has better dispersibility in a polymer, and the stability of the quantum dot is kept. If the quantum dots are used directly, failure occurs due to the quantum dots directly contacting water oxygen in the air during storage and use. After the quantum dot color master batch is prepared, the properties of the quantum dots can be kept unchanged for a long time because the polymer carrier isolates the quantum dots from water and oxygen in the air. However, the prepared quantum dot color master batch is irregular in shape, and the prior art has no effective method for testing the optical performance of the quantum dot color master batch.
Disclosure of Invention
Aiming at the defects of the prior art and solving the problems that the color of the quantum dot color master batch is not uniform and the optical performance cannot be tested, the invention provides a method and a test system capable of monitoring the optical performance of the quantum dot color master batch in real time, so that the prepared quantum dot color master batch can be monitored in real time, timely or irregularly during the process of preparing the quantum dot color master batch, and unqualified quantum dot color master batches are screened out in time by monitoring the optical performance of the quantum dot color master batch in each link, thereby ensuring the optical performance of the whole quantum dot color master batch and saving the cost of sampling and inspecting samples.
The invention specifically adopts the following technical scheme:
a method for monitoring optical performance of quantum dot color master batch in real time is characterized by comprising the following steps: and (3) taking the original pure quantum dot spectrum as a reference spectrum, and sequentially and respectively monitoring: the central wavelength, the half-peak width and the luminous intensity of the linear quantum dot color master batch at the extrusion outlet, the cooling treatment outlet and the air drying treatment outlet of the granulator; so as to judge whether the quality of the linear quantum dot color master batch is qualified.
Further, if the monitoring result is within a preset monitoring value range, judging that the linear quantum dot color master batch is qualified, otherwise, judging that the linear quantum dot color master batch is unqualified; and when the unqualified quantum dot color master batch is monitored, cutting the unqualified part.
Further, the granulator is a double-screw extrusion granulator; the cooling treatment adopts cooling water cooling treatment; the air drying treatment adopts an air dryer for treatment; monitoring the central wavelength, the half-peak width and the luminous intensity of the linear quantum dot color master batch is realized by adopting a device that a reflection-type spectrometer optical fiber probe is respectively connected to a laser and a spectrometer.
Furthermore, the laser emits a beam of exciting light, and the beam of exciting light reaches the reflecting mirror through the guide optical fiber, the first lens and the narrow-band filter; the reflecting mirror reflects exciting light to the dichroic mirror, then reflects the exciting light to the third lens, and then the exciting light is converged on the linear quantum dot color master batch through the third lens to excite the linear quantum dot color master batch to emit light; the light emitted by the linear quantum dot color master batch is collected by the third lens and transmitted to the dichroscope, the dichroscope transmits the light emitted by the linear quantum dot color master batch to the long-pass filter, and the light is converged into the collection optical fiber through the second lens, and the spectrum information of the light emitted by the linear quantum dot color master batch is collected by the spectrometer.
Further, by taking the original pure quantum dot spectrum as a reference spectrum, when the central wavelength of the linear quantum dot color master batch from the extrusion port of the granulator, the outlet of the cooling water and the air-dried outlet fluctuates within the range of +/-5 nm, the half-peak width fluctuates within the range of +/-3 nm and the luminous intensity fluctuates within the range of +/-10%, the linear quantum dot color master batch at the moment is considered to be qualified, otherwise, the linear quantum dot color master batch is considered to be unqualified.
And, but a real-time supervision quantum dot masterbatch optical property's test system, its characterized in that is including setting gradually: the device comprises a double-screw extrusion granulator, a water cooling treatment system and an air drying treatment system; and respectively arranging reflection-type spectrometer fiber probes at an extrusion port of the granulator, a cooling water outlet and an air drying treatment outlet; the reflection-type spectrometer optical fiber probe is connected to the spectrometer and the laser and is used for monitoring the optical performance of the linear quantum dot color master batches at the extrusion outlet, the cooling water outlet and the air-dried outlet of the granulator in real time.
Furthermore, the optical fiber probe of the reflection-type spectrometer is respectively arranged at the position 10-20cm above the extrusion port of the granulator, the cooling water outlet and the air drying outlet, and the diameter of the optical fiber probe is 2-6mm, so that the quantum dot color master batch can be completely monitored.
Furthermore, in the structure that the laser and the spectrometer are connected with the optical fiber probe, a beam of exciting light is emitted by the laser and reaches the reflector through the lead-in optical fiber, the first lens and the narrow-band filter; the reflecting mirror reflects exciting light to the dichroic mirror, then reflects the exciting light to the third lens, and then the exciting light is converged on the linear quantum dot color master batch through the third lens to excite the linear quantum dot color master batch to emit light; the light emitted by the linear quantum dot color master batch is collected by the third lens and transmitted to the dichroscope, the dichroscope transmits the light emitted by the linear quantum dot color master batch to the long-pass filter, and the light is converged into the collection optical fiber through the second lens, and the spectrum information of the light emitted by the linear quantum dot color master batch is collected by the spectrometer.
Further, the laser wavelength emitted by the laser is below 470nm and is adjustable; the dichroscope is used for reflecting part of exciting light, and the part of the exciting light penetrates through the third lens to excite the linear quantum dot color master batch to emit light, so that the light emitted by the linear quantum dot color master batch completely penetrates through the third lens and is transmitted to the long-pass filter.
Furthermore, the optical fiber probe can be made of high-temperature resistant materials such as quartz, silicon dioxide and the like, the material of the optical fiber probe at the extrusion outlet of the granulator is at least 200 ℃, and the exterior of the granulator is coated with a high-temperature resistant protective sleeve; the material of the optical fiber probe at the cooling water outlet is at least 100 ℃; the material of the optical fiber probe at the air cooling outlet is at least 50 ℃.
Compared with the prior art, the invention and the optimized scheme thereof have the following beneficial effects: the method can monitor in real time, each stage of quantum dot color master batch production is monitored in real time, unqualified quantum dot color master batches are screened out in time, the problems of uneven color, large chromatic aberration, high detection cost and the like of the quantum dot color master batches are solved, and the uniformity and the qualification rate of the quantum dot color master batches are effectively improved.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
FIG. 1 is a flow chart of a testing system for monitoring optical performance of quantum dot color masterbatch in real time according to the present invention;
FIG. 2 is a schematic diagram of a testing system apparatus capable of monitoring optical properties of quantum dot color master batch in real time, in which FIG. 1 is a twin-screw extrusion granulator, 2 is an extrusion port, 3 is a linear quantum dot color master batch, 4 is an optical fiber bracket, 5 is an optical fiber probe, 6 is an introduction optical fiber, 7 is a collection optical fiber, 8 is a laser, 9 is a spectrometer, 10 is a display, 11 is a cutter, 12 is a cooling water system, and 13 is a fan system;
fig. 3 is a schematic diagram of the internal structure of an optical fiber probe, in which 1 is a twin-screw extrusion granulator, 2 is an extrusion port, 3 is a linear quantum dot color master batch, 4 is an optical fiber support, 5 is an optical fiber probe, 51 is a lens 1, 52 is a lens 2, 53 is a narrow-band filter, 54 is a long-pass filter, 55 is a reflector, 56 is a dichroic mirror, 57 is a lens 3, 6 is a lead-in optical fiber, 7 is a collection optical fiber, 8 is a laser, and 9 is a spectrometer;
FIG. 4 is a quantum dot color master batch spectrum of a qualified sample monitored by three part spectrometers in example 1;
fig. 5 is a quantum dot masterbatch spectrum of a failed sample as monitored by the three part spectrometer of example 2.
Detailed Description
In order to make the features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail as follows:
as shown in fig. 1 to 5, the monitoring process is realized by combining the test system capable of monitoring the optical performance of the quantum dot color master batch in real time in the embodiment of the present invention, and the test system capable of monitoring the optical performance of the quantum dot color master batch in real time is composed of three parts.
The first part is that a reflection-type spectrometer optical fiber probe 5 is fixed above an extrusion port 2 of a double-screw extrusion granulator 1 through an optical fiber bracket 4; the second part is that after the linear quantum dot color master batch 3 is cooled by a cooling water system 12, a reflection-type spectrometer optical fiber probe is also fixed at the outlet of the cooling water; and the third part is that after the linear quantum dot color master batch 3 is subjected to an air drying process by a fan system 13, a reflection-type spectrometer optical fiber probe is also fixed at an air-dried outlet.
The optical fiber probes of the three parts are connected to a spectrometer 9, then connected to an upper computer with a display 10 and connected to a laser 8, and the optical performance of the linear quantum dot color master batch coming out of an extrusion port of a granulator, a cooling water outlet and an air-dried outlet is monitored in real time respectively.
The specific test method is as follows: and taking the original pure quantum dot spectrum as a reference spectrum, and when the central wavelength, the half-peak width and the luminous intensity of the linear quantum dot color master batch discharged from an extrusion port of the granulator, a cooling water outlet and an air-dried outlet fluctuate within a certain range, determining that the linear quantum dot color master batch is qualified at the moment, or determining that the linear quantum dot color master batch is unqualified. And when the unqualified quantum dot color master batch is monitored, starting a cutting program to cut off the unqualified part. Unqualified quantum dot color master batches are screened out through real-time monitoring, so that the color uniformity of the quantum dot color master batches is improved.
As a more specific preferable embodiment, the following design is possible: the first part of the quantum dot color master batch optical performance test system mainly comprises: reflection-type spectrum appearance fiber probe, cutting knife 11, unqualified quantum dot masterbatch collection device. Namely, a reflection-type spectrometer optical fiber probe is arranged at a position 10-20cm above an extrusion port of a granulator, the optical fiber probe can be made of quartz, silicon dioxide and other materials which can resist high temperature below 200 ℃, the optical fiber probe is connected to a spectrometer, the optical performance of quantum dot color master batches extruded by the granulator is monitored in real time, at regular time or at irregular time through a computer end, a high-temperature-resistant protective sleeve is wrapped outside the optical fiber probe, and the diameter of the optical fiber probe is 2-6mm, so that the quantum dot color master batches can be completely monitored.
The internal working principle of the optical fiber probe is as follows: when the laser 8 emits a beam of excitation light, the excitation light reaches the reflecting mirror 55 through the guiding optical fiber 6, the lens 51 and the narrow-band filter 53, the reflecting mirror 55 reflects the excitation light to the dichroic mirror 56, the excitation light is reflected to the lens 57, the excitation light is converged to the linear quantum dot color master batch through the lens 57 to excite the linear quantum dot color master batch to emit light, the light emitted by the linear quantum dot color master batch is collected by the lens 57 and transmitted to the dichroic mirror 56, the dichroic mirror 56 transmits the light emitted by the linear quantum dot color master batch to the long-pass filter 54, and the spectrum information of the light emitted by the linear quantum dot color master batch is collected by the spectrometer 9 in the collecting optical fiber 7 through the lens 52.
The laser wavelength emitted by the laser is below 470nm and is adjustable, and one function of the dichromatic mirror is to reflect part of excitation light and enable the excitation light to pass through the lens 57 to deenergize the linear quantum dot color master batch to emit light; the other function is to allow the light emitted from the linear quantum dot color master batch to be transmitted to the long pass filter 54.
As the second part of the optical performance test system of the quantum dot color master batch, the system mainly comprises: reflection-type spectrum appearance fiber optic probe, cutting knife, unqualified quantum dot masterbatch collection device. Namely, a reflection-type spectrometer optical fiber probe is arranged at a position 10-20cm above a cooling water outlet, the optical fiber probe can resist the temperature below 100 ℃, the optical fiber probe is connected to a spectrometer, the optical performance of the quantum dot color master batch extruded by a granulator is monitored in real time, at regular time or at irregular time through a computer end, a high-temperature-resistant protective sleeve is wrapped outside the optical fiber probe, and the diameter of the optical fiber probe is 2-6mm so as to be capable of completely monitoring the quantum dot color master batch.
As the third part of the optical performance test system of the quantum dot color master batch, the system mainly comprises: the device comprises a reflection-type spectrometer optical fiber probe, a cutting knife, an unqualified quantum dot color master batch collecting device and a qualified quantum dot color master batch collecting device. Namely, a reflection-type spectrometer optical fiber probe is arranged at a position 10-20cm above an air-dried outlet, the optical fiber probe can resist the temperature below 50 ℃, the optical fiber probe is connected to a spectrometer, the optical performance of the quantum dot color master batch extruded by a granulator is monitored in real time, at regular time or at irregular time through a computer end, the diameter of the optical fiber probe is 2-6mm, and the quantum dot color master batch can be completely monitored.
The test method can be specifically as follows: and taking the original pure quantum dot spectrum as a reference spectrum, and when monitoring that the central wavelength of the linear quantum dot color master batch from an extrusion port of a granulator, a cooling water outlet and an air-dried outlet fluctuates within the range of +/-5 nm, the half-peak width fluctuates within the range of +/-3 nm and the luminous intensity fluctuates within the range of +/-10%, determining that the linear quantum dot color master batch is qualified at the moment, or determining that the linear quantum dot color master batch is unqualified.
The following embodiments are combined to specifically describe a method and a test system for monitoring the optical performance of a quantum dot color master batch in real time. The present invention is further described in the preferred embodiments, which should not be construed as limited to the embodiments set forth herein, nor should it be construed as limited to the scope of the invention which is to be protected by the claims.
Example 1
Fig. 2 is a quantum dot color master batch spectrogram of a qualified sample monitored by three parts of spectrometers of the quantum dot color master batch optical performance testing system in the embodiment. Firstly, a spectrum of a pure quantum dot solution is taken as a reference spectrum, a linear quantum dot color master batch is extruded from an extrusion port of a double-screw extrusion granulator, the spectrum of the linear quantum dot color master batch is monitored by a high-temperature-resistant optical fiber probe fixed above the extrusion port, and whether the spectrum is uniform or not is judged, as shown in a first part in fig. 2, the spectrum of the linear quantum dot color master batch monitored by the first part is consistent with the reference spectrum and keeps unchanged, which indicates that the linear quantum dot color master batch extruded from the extrusion port of the double-screw extrusion granulator is uniform and can enter the next part.
Secondly, the linear quantum dot color master batch passes through a cooling water system, a spectrometer optical fiber probe fixed at an outlet of the cooling water monitors the spectrum of the cooled linear quantum dot color master batch, and whether the spectrum is uniform or not is judged to be consistent with the monitoring result of the reference spectrum and the first part, as shown in the second part in fig. 2, the spectrum of the second part is monitored to be constant and is consistent with the reference spectrum and the first part, and the result shows that the linear quantum dot color master batch passing through the cooling water system is uniform and can enter the next part.
And finally, the linear quantum dot color master batch passes through an air drying system, a spectrometer optical fiber probe fixed at an outlet of the air drying system monitors the spectrum of the air-dried linear quantum dot color master batch, and judges whether the spectrum is uniform and is consistent with the reference spectrum and the monitoring results of the first part and the second part, as shown in the third part in fig. 2, the third part monitors that the spectrum is unchanged and is consistent with the reference spectrum and the first part and the second part, which shows that the air-dried linear quantum dot color master batch is uniform and can be cut into the quantum dot color master batch.
Example 2
Fig. 3 is a quantum dot color master batch spectrum diagram of a failed sample monitored by three parts of spectrometers of the quantum dot color master batch optical performance testing system in the embodiment. Firstly, a spectrum of a pure quantum dot solution is taken as a reference spectrum, linear quantum dot color master batches are extruded from an extrusion port of a double-screw extrusion granulator, the spectrum of the linear quantum dot color master batches is monitored by a high-temperature-resistant optical fiber probe fixed above the extrusion port, and whether the spectrum is uniform or not is judged, as shown in a first part in fig. 3, the spectrum of the first part is monitored to be consistent with the reference spectrum and keep unchanged, and the result shows that the linear quantum dot color master batches extruded from the extrusion port of the double-screw extrusion granulator are uniform and can enter the next part. If the spectrum monitored in a certain period of time in the first part is inconsistent with the spectrum monitored in the previous period, the quantum dot color master batch in the period is not uniform, at the moment, a cutting program is started to cut off the non-uniform part, and the quantum dot color master batch is recovered to be uniform when the spectrometer probe monitors that the spectrum is consistent with the spectrum monitored in the first part, so that the next part can be entered.
Secondly, the linear quantum dot color master batch passes through a cooling water system, a spectrometer optical fiber probe fixed at an outlet of the cooling water monitors the spectrum of the cooled linear quantum dot color master batch, whether the spectrum is uniform and consistent with the reference spectrum and the monitoring result of the first part is judged, as shown in the second part in fig. 3, the second part monitors that the spectrum is changed and inconsistent with the reference spectrum and the first part, the linear quantum dot color master batch passing through the cooling water system is not uniform, at the moment, a cutting program is started to cut off the non-uniform part, and the quantum dot color master batch passing through the cooling water system is recovered to be uniform until the spectrum of the spectrometer probe is consistent with the spectrum of the first part, and the next part can be entered.
And finally, the linear quantum dot color master batch passes through an air drying system, a spectrometer optical fiber probe fixed at an outlet of the air drying system monitors the spectrum of the air-dried linear quantum dot color master batch, and judges whether the spectrum is uniform and is consistent with the reference spectrum and the monitoring results of the first part and the second part, as shown in the third part in fig. 3, the third part monitors that the spectrum is deformed and is inconsistent with the reference spectrum and the first part and the second part, the result shows that the air-dried linear quantum dot color master batch is not uniform, and at the moment, a cutting program is started to cut off the non-uniform parts until the spectrum probe monitors that the spectrum of the first part and the second part is consistent, the air-dried quantum dot color master batch is recovered to be uniform and can be cut into the quantum dot color master batch.
The present invention is not limited to the above preferred embodiments, and other various methods and systems for monitoring the optical performance of quantum dot color masterbatch in real time can be obtained by anyone who can benefit from the present invention.
Claims (10)
1. A method capable of monitoring optical performance of quantum dot color master batch in real time is characterized in that: and (3) taking the original pure quantum dot spectrum as a reference spectrum, and sequentially and respectively monitoring: the central wavelength, the half-peak width and the luminous intensity of the linear quantum dot color master batch at the extrusion outlet, the cooling treatment outlet and the air drying treatment outlet of the granulator; so as to judge whether the quality of the linear quantum dot color master batch is qualified.
2. The method for monitoring the optical performance of the quantum dot color master batch in real time according to claim 1, wherein the method comprises the following steps: if the monitoring result is within the preset monitoring value range, judging that the linear quantum dot color master batch is qualified, otherwise, judging that the linear quantum dot color master batch is unqualified; and when the unqualified quantum dot color master batch is monitored, cutting the unqualified part.
3. The method for monitoring the optical performance of the quantum dot color master batch in real time according to claim 1, wherein the method comprises the following steps: the granulator is a double-screw extrusion granulator; the cooling treatment adopts cooling water cooling treatment; the air drying treatment adopts an air dryer for treatment; monitoring the central wavelength, the half-peak width and the luminous intensity of the linear quantum dot color master batch is realized by adopting a device that a reflection-type spectrometer optical fiber probe is respectively connected to a laser and a spectrometer.
4. The method for monitoring the optical performance of the quantum dot color master batch in real time according to claim 3, wherein the method comprises the following steps: the laser emits a beam of exciting light, and the beam of exciting light reaches the reflecting mirror through the guide optical fiber, the first lens and the narrow-band filter; the reflecting mirror reflects exciting light to the dichroic mirror, then reflects the exciting light to the third lens, and then the exciting light is converged on the linear quantum dot color master batch through the third lens to excite the linear quantum dot color master batch to emit light; the light emitted by the linear quantum dot color master batch is collected by the third lens and transmitted to the dichroscope, the dichroscope transmits the light emitted by the linear quantum dot color master batch to the long-pass filter, and the light is converged into the collection optical fiber through the second lens, and the spectrum information of the light emitted by the linear quantum dot color master batch is collected by the spectrometer.
5. The method for monitoring the optical performance of the quantum dot color master batch in real time according to claim 2, wherein the method comprises the following steps: and taking the original pure quantum dot spectrum as a reference spectrum, and when monitoring that the central wavelength of the linear quantum dot color master batch from an extrusion port of a granulator, a cooling water outlet and an air-dried outlet fluctuates within the range of +/-5 nm, the half-peak width fluctuates within the range of +/-3 nm and the luminous intensity fluctuates within the range of +/-10%, determining that the linear quantum dot color master batch at the moment is qualified, otherwise, determining that the linear quantum dot color master batch is unqualified.
6. The utility model provides a but real-time supervision quantum dot masterbatch optical property's test system which characterized in that, including setting gradually: the device comprises a double-screw extrusion granulator, a water cooling treatment system and an air drying treatment system; and respectively arranging reflection-type spectrometer fiber probes at an extrusion port of the granulator, a cooling water outlet and an air drying treatment outlet; the reflection-type spectrometer optical fiber probe is connected to the spectrometer and the laser and is used for monitoring the optical performance of the linear quantum dot color master batches at the extrusion outlet, the cooling water outlet and the air-dried outlet of the granulator in real time.
7. The test system capable of monitoring the optical performance of the quantum dot color master batch in real time according to claim 6, wherein: the reflection-type spectrometer optical fiber probe is respectively arranged at the position 10-20cm above the extrusion port of the granulator, the cooling water outlet and the air drying treatment outlet, the diameter of the optical fiber probe is 2-6mm, and the optical fiber probe is used for ensuring that the quantum dot color master batch can be completely monitored.
8. The test system capable of monitoring the optical performance of the quantum dot color master batch in real time according to claim 7, wherein: in the structure that a laser and a spectrometer are connected with a fiber probe, a beam of exciting light is emitted by the laser and reaches a reflector through a guide optical fiber, a first lens and a narrow-band filter; the reflecting mirror reflects exciting light to the dichroic mirror, then reflects the exciting light to the third lens, and then the exciting light is converged on the linear quantum dot color master batch through the third lens to excite the linear quantum dot color master batch to emit light; the light emitted by the linear quantum dot color master batch is collected by the third lens and transmitted to the dichroscope, the dichroscope transmits the light emitted by the linear quantum dot color master batch to the long-pass filter, and the light is converged into the collection optical fiber through the second lens, and the spectrum information of the light emitted by the linear quantum dot color master batch is collected by the spectrometer.
9. The test system capable of monitoring the optical performance of the quantum dot color master batch in real time according to claim 8, wherein: the laser wavelength emitted by the laser is below 470nm and is adjustable; the dichromatic mirror is used for reflecting part of exciting light, the part of the exciting light penetrates through the third lens to excite the linear quantum dot color master batch to emit light, and the light emitted by the linear quantum dot color master batch is completely transmitted to the long-pass filter.
10. The test system capable of monitoring the optical performance of the quantum dot color master batch in real time according to claim 7, wherein: the optical fiber probe is made of a high-temperature-resistant material comprising quartz or silicon dioxide, the material of the optical fiber probe at the extrusion outlet of the granulator is at least 200 ℃, and the exterior of the optical fiber probe is coated with a high-temperature-resistant protective sleeve; the material of the optical fiber probe at the cooling water outlet is at least 100 ℃; the material of the optical fiber probe at the air cooling outlet is at least 50 ℃.
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