CN109655429A - A kind of detection method of architectural reflective heat-insulation paint (flat to apply) heat-proof quality - Google Patents

A kind of detection method of architectural reflective heat-insulation paint (flat to apply) heat-proof quality Download PDF

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Publication number
CN109655429A
CN109655429A CN201811644281.9A CN201811644281A CN109655429A CN 109655429 A CN109655429 A CN 109655429A CN 201811644281 A CN201811644281 A CN 201811644281A CN 109655429 A CN109655429 A CN 109655429A
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China
Prior art keywords
heat
infrared
coating
insulation paint
apply
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CN201811644281.9A
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王镇
王玲
廖向阳
罗蛟
马鹏飞
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Zhenjiang Panchina Detection Technology Co Ltd
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Zhenjiang Panchina Detection Technology Co Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/359Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using near infrared light

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Laminated Bodies (AREA)
  • Building Environments (AREA)

Abstract

The present invention is a kind of detection method of architectural reflective heat-insulation paint (flat to apply) heat-proof quality, it mainly utilizes ultraviolet-visible-near-infrared reflection ratio of the near infrared spectrometer test reflective heat-insulation paint on black and white paper jam, its principle is in near-infrared because of coating there is transmission phenomenon, and the near infrared reflectivity obtained on the blank and blackboard of paper jam so as to cause coating is distinguishing.The covering power of the coating near-infrared is obtained using the calculation formula of covering power in this way.Using the heat-insulated temperature difference of same coating testing coating, the heat-insulated temperature difference and the linear proportional relation of near-infrared covering power of coating are confirmed.Just directive significance can be provided for the practical effect after wall on reflective heat-insulation paint.It avoids the high reflectance coating obtained in laboratory testing process and ideal heat insulation is not achieved in practice.

Description

A kind of detection method of architectural reflective heat-insulation paint (flat to apply) heat-proof quality
Technical field
The present invention relates to technical field of coatings, more particularly to a kind of architectural reflective heat-insulation paint (flat to apply) heat-proof quality exists The detection of effect in practice.
Background technique
As country advocates the implementation of energy-saving and environmental protection industrial policy, especially building energy conservation, involve a wide range of knowledge, even more increasingly It is taken seriously.The appearance of GB/T 25261-2018 " reflective heat-insulation paint for building " new national standard, these all strong promotions are anti- Penetrate the development of insulating moulding coating.At present for the performance detection of reflective heat-insulation paint (sun luminous reflectance, near-infrared reflection ratio and half Ball emissivity) still use aluminium sheet to be detected as test ground, because near infrared ray is also that straight line is worn as visible light It broadcasts, and there is also the basic laws of reflection, absorption, transmission.Such test cannot characterize the property of reflective heat-insulation paint completely Can, because coating obtains the close of coating there is phenomenon, the high reflectance that can use testing substrates aluminium sheet is transmitted in near-infrared The higher phenomenon of infrared external reflection ratio.So as to cause detection data and the difference actually between wall effect, it is unfavorable for so anti- Penetrate the overall development of insulating moulding coating.
Advantages of the present invention: since the energy in sunlight is mainly near infrared ray, the pact of solar radiation energy is accounted for 53%, therefore covering power to near-infrared or albedo directly reflect the heat-proof quality of coating.The present invention effectively solves Calculating to the covering power of near infrared ray, accurately can objectively reflect the reflective insulation performance of coating, and avoid experiment Difference problem between room detection data and actually wall effect.
Summary of the invention
The purpose of the present invention is to solve detection data existing for existing building reflective heat-insulation paint and actually wall imitate The problem of being had differences between fruit, and a kind of detection method of architectural reflective heat-insulation paint (flat to apply) heat-proof quality proposed.
To achieve the goals above, the following technical solution that the present invention takes:
Step (1) tests the reflectivity of black and white paper jam using Albedometer;
Step (2) carries out multiple tracks film using bar spreader on black and white paper jam;
After the completion of step (3) film, test plate (panel) is put under normal environment conditions and carries out maintenance 7 days;
Step (4) is close red on paper jam blank and blackboard using ultraviolet-visible-near infrared spectrometer testing coating External reflectance ratio;
Calculation formula of the step (5) according to covering power, is calculated coating in the covering power of near-infrared part.
Further, III Albedometer of C84- used in step (1) tests the blank and blackboard of black and white paper jam Reflectivity after testing 4 points respectively on blank and blackboard, calculates its reflectivity average value.
Ensure the reflectivity for the substrate tested in blackboard reflectivity < 1%, blank reflectivity through the above technical solution (80 ± 2) %, so that it is guaranteed that test result is more accurate.
Further, RDS bar spreader is used in step (2), and the consistent paint film of uniform thickness is made.
By using above-mentioned technical proposal, coating thickness can be effectively controlled using RDS spreader.The coating of different size The uniform coating of different-thickness can be made in device, to reach the test request of 150 microns of final thickness of dry film or more.
Further, the good film of film is conserved, film is placed by according to the requirement of test in step (3) It is conserved under constant-temperature constant-humidity environment, curing time is 7 days.
By using above-mentioned technical proposal, film obtained is unstable in room temperature, needs to transfer in constant temperature and humidity condition It just can ensure that the optimal test mode of film after setting maintenance 7 days.
Further, step (4) uses but is not limited to 5000 ultraviolet-visibles of Agilent Cary-near-infrared spectrophotometric Meter, test wavelength range 175-3300nm, measurement accuracy 0.1nm.
By using above-mentioned technical proposal, the wave-length coverage of spectrophotometer is greater than test request (300-2500nm) wavelength Accuracy≤± 0.4nm, wavelength repeatability near-infrared≤± 0.02nm, can computer be automatically brought into operation, it is easy to use, it is intelligent Degree is high, carries out testing 3 points on each test surfaces when near-infrared reflection ratio test, its average value is taken, to guarantee test Accuracy.
Further, near-infrared reflection ratio of the step (5) according to test, can be calculated using the calculation formula of contrast ratio Covering power of the coating in near-infrared.
The utility model has the advantages that being tested with aluminium sheet is used as substrate, it is an advantage of the invention that can be more accurate objectively anti- Heat insulation after mirroring architectural reflective heat-insulation paint actually wall, Comparison between detecting methods are simple and are all to utilize existing detection Instrument.
Detailed description of the invention
Fig. 1 is 1 testing result schematic diagram of the embodiment of the present invention;
Fig. 2 is 2 testing result schematic diagram of the embodiment of the present invention;
Fig. 3 is 3 testing result schematic diagram of the embodiment of the present invention.
Specific embodiment
Below with reference to specific embodiment, the present invention is described in further detail, and described is explanation of the invention Rather than limit, used architectural reflective heat-insulation paint is 3 kinds of commercial coating.
The detection method of a kind of architectural reflective heat-insulation paint of embodiment 1 (flat to apply) heat-proof quality, comprising the following steps:
Step (1): using the reflectivity of Albedometer test black and white paper jam, it is black to guarantee that the reflectance value of substrate meets In the range of plate reflectivity < 1%, blank reflectivity (80 ± 2) %;
Coating: being film-made by step (2) by using bar spreader, selects the model RDS65# of bar spreader;
Step (3): the good film of film is placed into constant temperature and humidity room and is conserved 7 days, to reach optimal test mode;
Step (4): 50 microns of coating thickness are confirmed using digimatic micrometer;
Step (5): ultraviolet-visible-near infrared spectrometer testing coating near-infrared reflection ratio is used;
Step (6): according to covering power calculation formula, the near-infrared covering power of coating is calculated.
The detection method of a kind of architectural reflective heat-insulation paint of embodiment 2 (flat to apply) heat-proof quality, comprising the following steps:
Coating: on the basis of the test plate (panel) of embodiment 1, being film-made by step (1) again using bar spreader, selects bar coating The model RDS65# of device;
Step (2): the good film of film is placed into constant temperature and humidity room and is conserved 7 days, to reach optimal test mode;
Step (3): 100 microns of coating thickness are confirmed using digimatic micrometer;
Step (4): ultraviolet-visible-near infrared spectrometer testing coating near-infrared reflection ratio is used;
Step (5): according to covering power calculation formula, the near-infrared covering power of coating is calculated.
The detection method of a kind of architectural reflective heat-insulation paint of embodiment 3 (flat to apply) heat-proof quality, comprising the following steps:
Step (1): on the basis of the test plate (panel) of embodiment 2, coating the 3rd time is film-made using bar spreader, bar is selected to apply The model RDS65# of cloth device;
Step (2): the good film of film is placed into constant temperature and humidity room and is conserved 7 days, to reach optimal test mode;
Step (3): 100 microns of coating thickness are confirmed using digimatic micrometer;
Step (4): ultraviolet-visible-near infrared spectrometer testing coating near-infrared reflection ratio is used;
Step (5): according to covering power calculation formula, the near-infrared covering power of coating is calculated.
The specific testing result of embodiment 1-3 is as follows:
In summary since the energy in sunlight is mainly near infrared ray, about the 53% of solar radiation energy is accounted for, The covering power of the near-infrared of coating directly reflects coating to the screening ability of near infrared ray energy.Therefore near-infrared covering power Height directly influence the heat-insulated temperature difference of reality of coating.The test result of above-described embodiment is it can also be seen that equally apply thickness The near-infrared hiding rare of degree is high, and heat-insulated temperature difference performance is all right.To provide one for the practical heat insulation after wall on coating Convenient and fast foundation.

Claims (6)

1. a kind of detection method of architectural reflective heat-insulation paint (flat to apply) heat-proof quality, which comprises the following steps:
Step 1, using the reflectivity of Albedometer test black and white paper jam;
Step 2, multiple tracks film is carried out on black and white paper jam using bar spreader;
Step 3, after the completion of film, test plate (panel) is put into constant temperature and humidity room and carries out maintenance 7 days;
Step 4, anti-using ultraviolet-visible-near-infrared of the near infrared spectrometer testing coating on paper jam blank and blackboard Penetrate ratio;
Step 5, according to the calculation formula of contrast ratio, coating is calculated in the covering power of near-infrared part.
2. a kind of detection of the detection method of architectural reflective heat-insulation paint (flat to apply) heat-proof quality according to claim 1 Method, it is characterised in that: the black and white paper jam in the step 1 must satisfy blackboard reflectivity < 1%, blank reflectivity (80 ± 2) %.
3. a kind of detection method of architectural reflective heat-insulation paint (flat to apply) heat-proof quality according to claim 1, special Sign is: carrying out multiple tracks film using bar spreader in the step 2, the interval time of per pass film is greater than 6h, and makes The thickness of dry film of each test test plate (panel) is consistent.
4. a kind of detection method of architectural reflective heat-insulation paint (flat to apply) heat-proof quality according to claim 1, special Sign is: the constant temperature and humidity room in the step 3 need to meet temperature (23 ± 2) DEG C, relative humidity (50 ± 5) %RH.
5. a kind of detection method of architectural reflective heat-insulation paint (flat to apply) heat-proof quality according to claim 1, special Sign is: ultraviolet-visible-near infrared spectrometer in the step 4 is that any one test wavelength range is greater than 300- The optical instrument of 2500nm.
6. a kind of detection method of architectural reflective heat-insulation paint (flat to apply) heat-proof quality according to claim 1, special Sign is: the covering power calculation formula in the step 5 are as follows: RNear-infrared=RB near-infrared reflection ratio/RW near-infrared reflection ratio, in formula: RNear-infraredCoating is close Infrared covering power;RB near-infrared reflection ratioNear infrared reflectivity of the coating on blackboard;RW near-infrared reflection ratioNear-infrared of the coating on blank is anti- Penetrate rate;Coating is obtained in near-infrared covering power.
CN201811644281.9A 2018-12-29 2018-12-29 A kind of detection method of architectural reflective heat-insulation paint (flat to apply) heat-proof quality Pending CN109655429A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111220647A (en) * 2020-01-20 2020-06-02 西安交通大学 Non-contact nondestructive testing method and device for thermal insulation temperature of thermal barrier coating

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Publication number Priority date Publication date Assignee Title
CN102507505A (en) * 2011-11-10 2012-06-20 攀枝花鼎星钛业有限公司 Determination method for covering power of titanium dioxide
CN106501188A (en) * 2016-11-15 2017-03-15 攀钢集团钛业有限责任公司 Coating covering power detection method and control methods
CN107389600A (en) * 2017-08-14 2017-11-24 江苏特丰新材料科技有限公司 Near-infrared reflection ratio, transmittance and the determination of absorption ratio method of coating

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Publication number Priority date Publication date Assignee Title
CN102507505A (en) * 2011-11-10 2012-06-20 攀枝花鼎星钛业有限公司 Determination method for covering power of titanium dioxide
CN106501188A (en) * 2016-11-15 2017-03-15 攀钢集团钛业有限责任公司 Coating covering power detection method and control methods
CN107389600A (en) * 2017-08-14 2017-11-24 江苏特丰新材料科技有限公司 Near-infrared reflection ratio, transmittance and the determination of absorption ratio method of coating

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中国材料研究学会 等: "《中国战略性新兴产业——新材料 环境工程材料》", 30 November 2018 *
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111220647A (en) * 2020-01-20 2020-06-02 西安交通大学 Non-contact nondestructive testing method and device for thermal insulation temperature of thermal barrier coating

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Application publication date: 20190419