CN110702630B - Measuring and calibrating method for ultraviolet light absorption efficiency of quantum dot UV ink - Google Patents
Measuring and calibrating method for ultraviolet light absorption efficiency of quantum dot UV ink Download PDFInfo
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- CN110702630B CN110702630B CN201911003121.0A CN201911003121A CN110702630B CN 110702630 B CN110702630 B CN 110702630B CN 201911003121 A CN201911003121 A CN 201911003121A CN 110702630 B CN110702630 B CN 110702630B
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- 239000002096 quantum dot Substances 0.000 title claims abstract description 75
- 230000031700 light absorption Effects 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000000463 material Substances 0.000 claims description 19
- 239000011521 glass Substances 0.000 claims description 12
- 238000005259 measurement Methods 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- 239000000976 ink Substances 0.000 description 47
- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical class [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 description 10
- QGLWBTPVKHMVHM-KTKRTIGZSA-N (z)-octadec-9-en-1-amine Chemical compound CCCCCCCC\C=C/CCCCCCCCN QGLWBTPVKHMVHM-KTKRTIGZSA-N 0.000 description 5
- 239000003446 ligand Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000009718 spray deposition Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
- G01N21/274—Calibration, base line adjustment, drift correction
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- Health & Medical Sciences (AREA)
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Abstract
The invention relates to the technical field of display, in particular to a method for measuring and calibrating ultraviolet light absorption efficiency of quantum dot UV ink, which comprises the following steps: step 1, adding quantum dot UV ink into a vessel with scale marks until the scale marks are zero; step 2, using a fixed parallel ultraviolet light source to vertically expose the quantum dot UV ink in the vessel; step 3, the quantum dot UV ink forms a cured layer from top to bottom, and the thickness of the cured layer is read through the scale on the utensil; and 4, judging the ultraviolet light absorption efficiency of the quantum dot UV ink according to the thickness of the formed curing layer, wherein the thicker the curing layer is, the higher the ultraviolet light absorption efficiency of the quantum dot UV ink with the concentration is. By the measuring and calibrating method, the ultraviolet light absorption efficiency of the quantum dot UV ink can be measured and calibrated quickly and stably.
Description
Technical Field
The invention relates to the technical field of display, in particular to a method for measuring and calibrating ultraviolet light absorption efficiency of quantum dot UV ink.
Background
Quantum dots (QDs for short) have the characteristics of adjustable light-emitting spectrum, narrow half-peak width, high light-emitting efficiency and the like, and can emit high-quality monochromatic light with the narrow half-peak width according to the size of the Quantum dots under the condition of being excited by ultraviolet light.
The application of the existing quantum dot technology in the display field is suddenly and suddenly leapfrog, more and more quantum dot UV ink comes along with the quantum dot UV ink, but the quantum dot has an ultraviolet light absorption effect, and the UV ink can be polymerized and cured only by ultraviolet light.
Disclosure of Invention
The invention provides a method for measuring and calibrating ultraviolet absorption efficiency of quantum dot UV ink, which can quickly and stably measure and calibrate the ultraviolet absorption efficiency of the quantum dot UV ink.
In order to achieve the purpose, the invention provides the following technical scheme:
a measurement calibration method for ultraviolet light absorption efficiency of quantum dot UV ink comprises the following steps:
and 4, judging the ultraviolet light absorption efficiency of the quantum dot UV ink with different concentrations through the thickness of the formed curing layer, wherein the thicker the curing layer is, the higher the ultraviolet light absorption efficiency of the quantum dot UV ink with the concentration is.
Furthermore, when the utensil made of transparent glass materials is used for calibration, tinfoil paper or light absorption paper is used for wrapping the side face of the utensil, and the accuracy of the experiment is guaranteed.
Furthermore, the emission light source of the parallel ultraviolet light source is 300 nm-400 nm, and the parallel ultraviolet light source can be used for curing the quantum dot UV ink.
Furthermore, the quantum dot UV ink can absorb ultraviolet light emitted by a fixed parallel ultraviolet light source and can be converted into one section of emission wavelength of 400 nm-700 nm.
Furthermore, the vessel is made of transparent glass or non-transparent glass or transparent plastic or non-transparent plastic. When the opaque glass material or the plastic material is adopted, tin foil paper or light absorption paper is not needed to wrap the side face of the vessel.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the ultraviolet light absorption efficiency of the UV ink with different quantum dot concentrations can be judged and tested according to the thickness of the cured layer.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic diagram of measurement calibration;
in the figure: 1-parallel ultraviolet light source, 2-vessel, 21-zero scale mark, 3-cured layer and 4-quantum dot UV ink.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
Due to the characteristic that the quantum dot material is afraid of heat and oxygen, the quantum dot material is rarely spray-molded by adopting a traditional thermosetting mode at present, and is mostly used by adopting an advanced ultraviolet curing spray-molding mode.
The ultraviolet curing spray forming is adopted, but the problems that the quantum dot material can absorb ultraviolet rays and the quantum dot UV ink needs ultraviolet rays for polymerization reaction exist, and in a traditional ultraviolet absorption testing instrument, the problem that the colloidal ink is cured can occur, so that great errors or measurement cannot be performed in the testing process.
In view of the above problems, embodiments of the present invention provide a measurement and calibration method for ultraviolet light absorption efficiency of quantum dot UV ink, which can quickly, simply and effectively determine the level of ultraviolet light absorption efficiency through direct data.
As shown in fig. 1 and fig. 2, a method for measuring and calibrating ultraviolet light absorption efficiency of quantum dot UV ink includes the following steps:
and 4, judging the ultraviolet light absorption efficiency of the quantum dot UV ink 4 with different concentrations according to the thickness of the formed cured layer 3, wherein the thicker the cured layer 3 is, the higher the ultraviolet light absorption efficiency of the quantum dot UV ink 4 with the concentration is.
The specific embodiment is as follows:
example 1:
taking quantum dot UV ink, wherein the quantum dot material is CdSe quantum dots with the surfaces modified by oleylamine serving as a ligand, the content of the CdSe quantum dots is 30 wt%, the molecular particle size is 5-10 nanometers, and the emitted light is 630 nm;
firstly, adding the quantum dot UV ink 4 into a vessel 2 made of transparent glass material to the zero scale mark 21, and vertically placing the vessel 2 on a horizontal table;
and then wrapping the side surface of the vessel 2 with light absorption paper, and vertically exposing the quantum dot UV ink 4 by using a 60w parallel ultraviolet light source 1 with the emission wavelength of 385nm, wherein the distance between the height of the light source and the zero scale mark 21 is 5 cm.
After exposure for 2h, the light source was turned off and the thickness of the solidified layer 3 formed in the dish 2 was measured.
Example 2:
taking quantum dot UV ink, wherein the quantum dot material is CdSe quantum dots with surfaces modified by oleylamine serving as a ligand, the content of the CdSe quantum dots is 25 wt%, the molecular particle size is 5-10 nanometers, and the emitted light is 630 nm;
firstly, adding the quantum dot UV ink 4 into a vessel 2 made of transparent glass material to the zero scale mark 21, and vertically placing the vessel 2 on a horizontal table;
and then wrapping the side surface of the vessel 2 with light absorption paper, and vertically exposing the quantum dot UV ink 4 by using a 60w parallel ultraviolet light source 1 with the emission wavelength of 385nm, wherein the distance between the height of the light source and the zero scale mark 21 is 5 cm.
After exposure for 2h, the light source was turned off and the thickness of the solidified layer 3 formed in the dish 2 was measured.
Example 3:
taking quantum dot UV ink, wherein the quantum dot material is CdSe quantum dots with the surfaces modified by oleylamine serving as a ligand, the content of the CdSe quantum dots is 20 wt%, the molecular particle size is 5-10 nanometers, and the emitted light is 630 nm;
firstly, adding the quantum dot UV ink 4 into a vessel 2 made of transparent glass material to the zero scale mark 21, and vertically placing the vessel 2 on a horizontal table;
then, wrapping the side face of the vessel 2 with light absorption paper, and vertically exposing the quantum dot UV ink 4 by using a 60w parallel ultraviolet light source 1 with the emission wavelength of 385nm, wherein the distance between the height of the light source and the zero scale mark 21 is 5 cm;
after exposure for 2h, the light source was turned off and the thickness of the solidified layer 3 formed in the dish 2 was measured.
Example 4:
taking quantum dot UV ink, wherein the quantum dot material is CdSe quantum dots with the surfaces modified by oleylamine serving as a ligand, the content of the CdSe quantum dots is 15 wt%, the molecular particle size is 5-10 nanometers, and the emitted light is 630 nm;
firstly, adding the quantum dot UV ink 4 into a vessel 2 made of transparent glass material to the zero scale mark 21, and vertically placing the vessel 2 on a horizontal table;
and then wrapping the side surface of the vessel 2 with light absorption paper, and vertically exposing the quantum dot UV ink 4 by using a 60w parallel ultraviolet light source 1 with the emission wavelength of 385nm, wherein the distance between the height of the light source and the zero scale mark 21 is 5 cm.
After exposure for 2h, the light source was turned off and the thickness of the solidified layer 3 formed in the dish 2 was measured.
Example 5:
taking quantum dot UV ink, wherein the quantum dot material is CdSe quantum dots with the surfaces modified by oleylamine serving as a ligand, the content of the CdSe quantum dots is 10 wt%, the molecular particle size is 5-10 nanometers, and the emitted light is 630 nm;
firstly, adding the quantum dot UV ink 4 into a vessel 2 made of transparent glass material to the zero scale mark 21, and vertically placing the vessel 2 on a horizontal table;
and then wrapping the side surface of the vessel 2 with light absorption paper, and vertically exposing the quantum dot UV ink 4 by using a 60w parallel ultraviolet light source 1 with the emission wavelength of 385nm, wherein the distance between the height of the light source and the zero scale mark 21 is 5 cm.
After exposure for 2h, the light source was turned off and the thickness of the solidified layer 3 formed in the dish 2 was measured.
The cured layer 3 thickness obtained with the quantum dot UV ink 4 of different concentrations is shown in the above 5 examples, and the results are shown in table 1:
TABLE 1
| Quantum dot UV ink concentration | Thickness of the cured layer (μm) | |
| Example 1 | 30％ | 6 |
| Example 2 | 25％ | 8 |
| Example 3 | 20％ | 20 |
| Example 4 | 15％ | 57 |
| Example 5 | 10％ | 107 |
As shown in table 1, the quantum dot UV inks 4 of different concentrations form different cured layers 3 when exposed to the same light source for the same time, and so on, and it can be seen from the thickness of the cured layer 3 obtained that the lower the concentration, the higher the ultraviolet light absorption efficiency when the concentrations of the quantum dot UV inks 4 are different even when the same quantum dot material is contained.
The invention can also keep the quantum dot UV ink with the same concentration under the condition of the same time and the same light source exposure according to the calibration measurement method, thereby comparing the ultraviolet light absorption efficiency of different quantum dot materials, and establishing the standard of the quantum dot UV ink absorption efficiency according to different requirements.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (2)
1. A measurement calibration method for ultraviolet light absorption efficiency of quantum dot UV ink is characterized by comprising the following steps:
step 1, adding quantum dot UV ink into a vessel with scale marks until the scale marks are zero;
step 2, using a fixed parallel ultraviolet light source to vertically expose the quantum dot UV ink in the vessel;
step 3, the quantum dot UV ink forms a cured layer from top to bottom, and the thickness of the cured layer is read through the scale on the utensil;
step 4, judging the ultraviolet light absorption efficiency of the quantum dot UV ink with different concentrations through the thickness of the formed curing layer, wherein the thicker the curing layer is, the higher the ultraviolet light absorption efficiency of the quantum dot UV ink with the concentration is;
when the vessel made of the transparent glass material is used for calibration, the side face of the vessel is wrapped by tinfoil paper or light absorption paper;
wherein the emission light source of the parallel ultraviolet light source is 300 nm-400 nm;
the quantum dot UV ink can absorb ultraviolet light emitted by a fixed parallel ultraviolet light source and can be converted into one section of emission wavelength of 400 nm-700 nm.
2. The method for measuring and calibrating ultraviolet light absorption efficiency of quantum dot UV ink according to claim 1, wherein the vessel is made of transparent glass or opaque glass or transparent plastic or opaque plastic.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB0304761D0 (en) * | 2003-03-01 | 2003-04-02 | Integration Technology Ltd | Ultraviolet curing |
| CN1793838A (en) * | 2005-12-21 | 2006-06-28 | 中国印钞造币总公司 | Method of determining solidification time of ultraviolet light solidifying printing ink |
| WO2012071304A2 (en) * | 2010-11-22 | 2012-05-31 | Henkel Corporation | Methods for measuring degree cure or solidification of a composition |
| DE102013224949A1 (en) * | 2013-12-05 | 2015-06-11 | Krones Ag | Measurement of the degree of curing of the printing or coating of a container |
| US20160123880A1 (en) * | 2014-10-29 | 2016-05-05 | Deepak Shukla | Method for fluorescent detection of curing |
| US20190033137A1 (en) * | 2017-07-28 | 2019-01-31 | Xerox Corporation | In-situ evaluation of curing of ink compositions via fluorescence spectroscopy and related methods |
| US10424056B2 (en) * | 2018-02-22 | 2019-09-24 | The Boeing Company | Active real-time characterization system for monitoring absorption and curing rates of chemical substances |
| CN109085129B (en) * | 2018-06-22 | 2021-10-15 | 广州兴森快捷电路科技有限公司 | Quantitative test method for UV light absorption of solder resist ink |
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