KR20150141096A - thermal performance testing method of radiating film - Google Patents
thermal performance testing method of radiating film Download PDFInfo
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- KR20150141096A KR20150141096A KR1020140069703A KR20140069703A KR20150141096A KR 20150141096 A KR20150141096 A KR 20150141096A KR 1020140069703 A KR1020140069703 A KR 1020140069703A KR 20140069703 A KR20140069703 A KR 20140069703A KR 20150141096 A KR20150141096 A KR 20150141096A
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- Prior art keywords
- heat
- film
- thermal performance
- temperature
- heating
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- 238000012360 testing method Methods 0.000 title description 2
- 238000010438 heat treatment Methods 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 31
- 238000005259 measurement Methods 0.000 claims abstract description 6
- 230000005855 radiation Effects 0.000 claims description 29
- 238000001069 Raman spectroscopy Methods 0.000 claims description 10
- 238000001237 Raman spectrum Methods 0.000 claims description 10
- 230000001678 irradiating effect Effects 0.000 claims description 6
- 230000017525 heat dissipation Effects 0.000 abstract description 18
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000011156 evaluation Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000009529 body temperature measurement Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000013021 overheating Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
- G01J3/44—Raman spectrometry; Scattering spectrometry ; Fluorescence spectrometry
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/18—Investigating or analyzing materials by the use of thermal means by investigating thermal conductivity
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
Disclosed is a method for evaluating the thermal performance of a heat dissipation film that heats a local region of a heat dissipation film, measures a temperature at which convergence progresses while a temperature change in a heated local region increases, and evaluates a thermal performance of the heat dissipation film.
The present invention relates to a method of manufacturing a heat dissipation film, comprising: a heating step of heating a local region of a heat dissipation film; a measurement step of measuring a temperature change of a local region of the heat dissipation film heated through the heating step; And judging the thermal performance.
Description
More particularly, the present invention relates to a method of evaluating thermal performance of a heat-radiating film, and more particularly, to a method of evaluating thermal performance of a heat-radiating film by heating a local region of the heat- The present invention relates to a thermal performance evaluation method of a heat dissipation film.
Generally, a method of installing a heat sink or a fan is used as a method of discharging or cooling the heat generated from various electronic parts to the outside of an electronic product. In the case of a heat sink, The heat dissipation efficiency is very low due to the small amount of heat that the heat sink can emit. In addition, the heat dissipating fan generates noise and vibration. In addition, since the PDP, the notebook computer, There is a problem that it can not be applied to a product which is required to be heated. Therefore, it is common to use a heat-radiating film on a sheet or film for electronic products which are required to be lightweight and slim.
The process of evaluating the thermal performance by measuring the thermal conductivity of the heat-radiating film during development of the heat-radiating film is very important.
When the developed heat-radiating film has a thickness of 100 μm or more, it is usually measured by a laser flash method.
However, if the thickness is less than that, 'Time-domain thermoreflectance' or '3 Omega' method can be used, but it is difficult to obtain a reliable measurement value. Furthermore, the thermal conductivity measuring equipment is very expensive and the charge is expensive, so that the usual cost is inconvenient. For a related industry that usually develops heat-radiating films by optimizing a variety of materials and process conditions, it would be a better approach to be able to resolve relative comparisons at a lower cost than absolute value measurements of thermal conductivity.
SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and to provide a heat dissipating film which is superior in thermal performance to heat dissipating films, And a method of evaluating the thermal performance of the heat dissipation film.
According to another aspect of the present invention, there is provided a method of evaluating a thermal performance of a heat radiating film, the method comprising: heating a local region of the heat radiating film; measuring a temperature change of a local region of the heat radiating film heated through the heating step; And a determination step of determining a thermal performance by comparing the temperature measured when the temperature measured in the measuring step increases and the temperature measured by the measuring step.
The heating step is characterized by irradiating a laser to a local site of the heat radiation film.
The measuring step is characterized by being made in a non-contact manner using an infrared thermometer.
And the heating step and the measuring step are performed simultaneously.
Wherein the heating step is performed by irradiating a laser to a local region of the heat dissipation film through a laser generator included in a Raman spectrometer, The method of
As described above, in the thermal performance evaluation method of the heat radiation film according to the present invention, the thermal performance of the heat radiation film can be evaluated by a relative comparison method.
Accordingly, there is an advantage in that a heat radiation film excellent in thermal performance can be selected simply and inexpensively as compared with the method of measuring the absolute value of the thermal performance.
In addition, when a heat-radiating film with high thermal conductivity is verified, it is possible to prevent the overheating of the local heat source when the heat-radiating film is applied to the actual product, and the heat generated from the heat source effectively spreads over a large area, Lt; / RTI >
1 is a flowchart of a method for evaluating a thermal performance of a heat radiation film according to an embodiment of the present invention,
2 is a perspective view showing a state in which a heat radiation film is heated using a laser,
3 is a perspective view showing a state where the temperature of the heat radiation film is measured using an infrared thermometer,
FIG. 4 is a perspective view showing a state in which heating and temperature measurement of the heat radiation film proceed simultaneously;
5 is a view showing a state in which the thermal performance of a heat radiation film is evaluated using a Raman spectrometer,
6 is a graph showing the temperature change of the heat-radiating film measured using an infrared thermometer.
Hereinafter, a method of evaluating the thermal performance of the heat radiating film according to the present invention having the above-described structure will be described in detail with reference to the accompanying drawings.
2 is a perspective view illustrating a method of heating a heat radiating film using a laser, and FIG. 3 is a perspective view illustrating a heat radiating film using an infrared thermometer, In which the temperature is measured.
A thermal performance evaluation method of a heat radiation film according to the present invention includes a heating step of heating a local region of a
The heating step is a step of heating the local region of the
The heating step may be performed by a contact method or a non-contact method, and the local area is heated to judge whether heat radiation and heat radiation of the
According to another embodiment of the present invention, the heating step is performed by irradiating a local portion of the
The
The measuring step is a step of measuring the temperature of the local region of the heat-radiating
According to another embodiment of the present invention, the measuring step is performed in a non-contact manner using an infrared thermometer (3).
When the surface temperature of the heat-radiating
4 is a perspective view showing a state in which heating of the heat radiation film and temperature measurement are progressed at the same time.
According to an embodiment of the present invention, the heating step and the measuring step may be performed simultaneously. That is, the local region of the heat-radiating
The determination step evaluates the thermal performance of the
6 is a graph showing the temperature change of the heat-radiating film measured using an infrared thermometer.
If it is assumed that the thermal performance of the two
According to an embodiment of the present invention, thermal performance of a plurality of heat-radiating films manufactured by different methods can be evaluated at the same time.
In this case, each of the
Meanwhile, the
At this time, the
As described above, according to the method of evaluating the thermal performance of the heat radiating film according to the present invention, it is possible to evaluate the thermal performance of the heat radiating film by a relative comparison method. Therefore, compared with the method of measuring the absolute value of the thermal performance, There is an advantage that an excellent heat-radiating film can be selected.
5 is a view showing a thermal performance evaluation of a heat radiation film using a Raman spectrometer.
According to another embodiment of the present invention, the heating step is performed by irradiating a laser L to a local region of the heat dissipation film through a laser generator 4 included in a Raman spectrometer. At this time, the heat-radiating
Raman spectroscopy refers to a spectroscopic method for obtaining the frequency of a molecule in the Raman effect, which is a phenomenon in which scattered light having a frequency corresponding to a frequency of a molecule is generated when a strong monochromatic excitation light such as a laser beam is irradiated. Thus, in general, a Raman spectrometer includes a light source, and in particular, a laser light source. Raman spectra are recorded by a Raman spectrometer.
The measuring step measures the tendency of a peak of the Raman spectrum generated in the
For example, when the peak of the Raman spectrum has a lot of redshift, it can be seen that the peak of the raman spectrum has increased significantly. Redshifts are less likely to be observed as temperature rises.
The determining step determines the thermal performance by comparing the degree of the redshift of the peak of the Raman spectrum in the measuring step. For example, when the peak of the Raman spectrum has a lot of redshifts, it is determined that the heat radiation performance is poor. On the contrary, when the Raman spectrum has a raman spectrum, It can be judged that the heat radiation performance is excellent because the temperature is lowered when the peak progresses with less redshift.
When the thermal performance of the heat-radiating film is evaluated by the above-described method, it is possible to develop a heat-radiating film having a high thermal conductivity, which is verified with respect to thermal performance. When a heat-radiating film is applied to an actual product, overheating of a local heat source can be prevented, The heat generated in the heat dissipating unit can be effectively spread over a large area and heat dissipation can be achieved.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention.
Accordingly, the true scope of protection of the present invention should be determined only by the appended claims.
1: substrate
2,4: Laser generator
3: Infrared thermometer
5: Photodetector
10: heat-radiating film
Claims (5)
A heating step of heating a local region of the heat radiation film,
A measuring step of measuring a temperature change of a local region of the heat-radiating film heated through the heating step;
And determining a thermal performance by comparing the temperature measured by the measuring step with the temperature at which the measured temperature is increased.
Wherein the heating step comprises irradiating a laser to a local portion of the heat radiation film.
Wherein the measurement step is performed in a non-contact manner using an infrared thermometer.
Wherein the heating step and the measuring step are performed at the same time.
Wherein the heating step is performed by irradiating a laser to a local region of the heat dissipating film through a laser generator included in a Raman spectrometer, The method of claim 1, wherein the determining step comprises a step of comparing the degree to which the peak of the Raman spectrum is redshifted in the measuring step, And determining the thermal performance of the heat radiation film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020140069703A KR20150141096A (en) | 2014-06-09 | 2014-06-09 | thermal performance testing method of radiating film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020140069703A KR20150141096A (en) | 2014-06-09 | 2014-06-09 | thermal performance testing method of radiating film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20150141096A true KR20150141096A (en) | 2015-12-17 |
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| KR1020140069703A KR20150141096A (en) | 2014-06-09 | 2014-06-09 | thermal performance testing method of radiating film |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180093867A (en) | 2015-12-17 | 2018-08-22 | 니폰 덴키 가라스 가부시키가이샤 | Manufacturing method of glass plate |
| CN115062462A (en) * | 2022-06-08 | 2022-09-16 | 南京贝迪新材料科技股份有限公司 | Intelligent heat transfer performance evaluation method and system for ultrathin heat dissipation film |
-
2014
- 2014-06-09 KR KR1020140069703A patent/KR20150141096A/en not_active Application Discontinuation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180093867A (en) | 2015-12-17 | 2018-08-22 | 니폰 덴키 가라스 가부시키가이샤 | Manufacturing method of glass plate |
| CN115062462A (en) * | 2022-06-08 | 2022-09-16 | 南京贝迪新材料科技股份有限公司 | Intelligent heat transfer performance evaluation method and system for ultrathin heat dissipation film |
| CN115062462B (en) * | 2022-06-08 | 2024-05-03 | 南京贝迪新材料科技股份有限公司 | Intelligent assessment method and system for heat transfer performance of ultrathin heat dissipation film |
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