JPS5932847A - Exposure test method by pursuing and collecting sunlight - Google Patents

Abstract

PURPOSE:To test the weatherability of a specimen by such an arrangement wherein the abnormal rise of temperature of the specimen is prevented by causing at least part of reflected sunlight to pass through an infrared ray absorbing filter once in collecting and irradiating the reflected light of sunlight on the specimen. CONSTITUTION:The reflected light 6 of sunlight is caused to pass through an infrared ray absorbing filter 9 and then irradiated on a specimen 8. It is not necessary to specially control where infrared ray absorbing filters 9 are to be positioned between reflecting plates 6 of sunlight and the specimen 8. Spraying of water may be carried out according to the purpose of test, it is preferable that spraying of water be carried out from a position away fromthe specimen in the lateral direction so that sprayed water can easily reach the specimen 8. By this method, the rise of temperature of the specimen can be restrained within such a range at which the result of measurement is not adversely influenced and the weatherability test of the specimen can be executed in a short period under such conditions which are substantially the same as actual operating conditions.

Description

[Detailed Description of the Invention] The present invention prevents abnormal temperature rise of the test piece by collecting reflected sunlight and irradiating it on the sample by transmitting it through a red infrared absorption filter before irradiating it. This article relates to a solar tracking light exposure test method for testing weather resistance.

Since ancient times, various types of painted steel plates and plastic Finotom have been used.
:As a method for evaluating weather resistance when laminated steel sheets are used for roofs and exterior walls of houses, various environments are artificially created in which light irradiation and water spray are applied, such as sunshine weather meter tests and ultraviolet lamp irradiation tests. An artificially accelerated weathering test method has been carried out to determine blood susceptibility in a short period of time. The outdoor exposure test method, which is considered the most preferable in terms of exposure to sunlight, which is a factor in deterioration in the actual environment of use, requires a very long period of time (once a year).
This is because they feel at ease with ) shi, ). However, in the artificially accelerated surface weathering test method as described above, since artificial light such as carbon arc light or lamp light is used, light irradiation is performed with light having wavelength characteristics different from that of sunlight.
Other environments are also different from natural ones. For this reason, depending on the type of substance that makes up the coating film of Test Ne.1 or Plasti-Soft.1 Luno, the form of decomposition and deterioration of the above substances in the artificial accelerated surface = l weatherability test may differ from the actual usage conditions. This is often different from the situation that occurs below, and may lead to misjudgment of the situation.

Therefore, recently, we placed a solar panel in the natural environment outdoors, and used the sunlight itself instead of artificial light to track the sun with a reflector that has a surface wider than the solar surface. A solar-tracking condensed light exposure test method that collects light and irradiates it onto a sample has begun to be used. This test method is the first
This is explained by a schematic front view of an example of the solar tracking collection) L exposure test device shown in the figure. First, to explain this device, an azimuth rotation mechanism 3 is attached to a column 2 supported by a support base 1.
The rotary structure 5 is attached via the high rotation f structure 4, and this [0] rolling groove structure 5 is attached to the reflector holding frame 5a.
and a specimen frame 5b. Reflector holding frame 5
In a, a plurality of reflecting plates 6 each having a reflection area of approximately the same area as the sample piece 8 (therefore, the total reflecting surface of the reflecting plates 6 is also larger than the surface of the sample piece 8) are energized, and a plurality of reflecting plates 6 are connected to each other when the light is incident from a predetermined direction. The angle of inclination of each plate is adjusted so that the sunlight rays coming from the specimen are reflected toward the attachment part of the sample capture frame 5b. Alternatively, a large-area concave reflector whose focal point is approximately at the center of the surface of the sample piece 8 may be used. Further, the specimen mounting frame 51) is hollow and is ventilated by a blower to prevent the specimen 8 from heating up abnormally.

A first
A plurality of sample pieces 8 having a length perpendicular to the paper I in the figure
And the reflector 6 that just forgets 1 is taken respectively.
I get kicked. Historically, the rotating structure 5 is provided with a water spray nozzle 7 for spraying water toward the mounting surface of the sample frame 5b as required.

This device tracks the moving sun using, for example, a microcomputer, and always reflects and condenses a 1-inch beam toward the specimen 8.As described above, To test the weather resistance using the solar tracking light condensing exposure device, place the sample piece 8 on the specimen mounting frame 51) of the solar tracking light condensing exposure device installed outdoors under natural conditions. ”
Inside [ ], the rotating structure 5 is rotated to follow and follow the constantly moving sun. According to this test method, the light irradiated onto the sample piece 8 is the same as sunlight, except for the difference in the amount of light irradiated per unit volume of 80 sample pieces. There is no problem that the wavelength characteristics of the shining light are different, and the environment in which the sample piece 8 is placed is the same as the outdoor exposure test, and the amount of sunlight received by the sample piece 8 from the reflector plate 6 is small. The amount of time required is much higher than in the case of outdoor exposure tests, so measurement results can be obtained in a relatively short period of time. Therefore, this solar tracking exposure test method is considered to be a method that solves the respective drawbacks of the outdoor exposure test method and the artificial accelerated weathering test method.

However, the inventor is aware that the judgment of weather resistance from the results obtained by this solar tracking light concentration exposure test method does not necessarily correspond to the weather resistance in actual use, and may sometimes differ considerably. I asked. Therefore, we conducted tests on various coated steel sheets and glass film laminated steel sheets using the solar tracking light condensing exposure test method and the outdoor exposure test method, and compared in detail the forms of decomposition and deterioration of specimens obtained from both methods. investigated. As a result, in many of the sample pieces 8 after performing the solar tracking light concentration exposure test method, the resin constituting the coating film and plastic film was separated by heat.
It was found that the cicadas were different from those in the outdoor exposure test in that many of the cicadas were deteriorated. This means that the amount of light received by sample piece 8 in the case of the solar tracking light concentration exposure test JJ'D is generally several times that of that in the case of the outdoor exposure test method, reaching a number i-, j&; Just by ventilation in the cavity of the frame 5b, the difference in the sample piece 8 can be detected;
It is considered that it is impossible to stop the rapid temperature rise for one minute. In addition, apart from the above, an outdoor exposure test using the solar tracking light concentration exposure test force method was conducted in the same way as above for a period of -2 years at the specified location (Goryo City, Chiba Prefecture).・1
・Han) J method was carried out, and the results of measuring Aikou of the specimen in three wavelength ranges I1.1' and P, i'l; 1 were obtained.

Table 1 [Unit: 2 calories/ctn2] From the first garment, when using the solar tracking concentrating exposure test method, the amount of light received per year 1d1 #d to test F) is lower than that using the outdoor exposure test method. It can be seen that it is 2.2 times more powerful, 4.7 times more powerful for iiJ Shikou Hi, and 7.4 times more powerful for infrared light. This means that the reflector is 14 yuan, and the gland is fruit) Y:
Sa11. When V is used, the wavelength range of Isuno l is also jt, j
This is thought to be due to the fact that the light is focused by 7''L at a magnification of 12, and due to the ease of use of the reflector 6 and each wavelength, the reflection and convergence rate is lower for the shorter wavelength 1'4). Therefore, the conventional
In the tracking light attack test method, the received infrared light sometimes increases and when the sample is taken into the f-j frame 51), the test t↑
I can't stop keeping warm for 18 days. I'm affected by the heat. I'm so hot. i etc. are overlay l
In the case of sample piece 8 which has become productive, outdoor reproduction test V
It has been found that this f9J43 case takes a different form of decomposition and deterioration.

Motomoto Akiyoshi et al., based on such t.1, focused 1 bow light into the prefecture, and what's more, there was a false influence of 4. The sample piece 8 was irradiated without any irradiation, and the test clay was f-j.
: 1 Taiyo JL test light concentration exposure test power d, diligently inspected 1r=
t t, fζ, conclusion (And, if you shift the infrared absorption filter by ++-1, you can get jjf function.) After that, we arrived at the present invention (7).

In other words, in Invention 7/i, Trial ++ 1A-i, and zb also tracked the sun with a wide reflector and reflected the sun's rays), and collected 114 lenses and irradiated them to the sample. 1l
4. Solar tracking condensation to investigate the IllI zone characteristics. To the butterbur test method
It's the opposite of the sun's rays! j of at least −i%B of light
'c-eye 4th nail infrared absorption filter? JIi1. It is related to the solar tracking fruit light abuse test, which is to be irradiated after passing the test).

The present invention will be explained in detail below.

Figures 2 to 7 are explanatory diagrams of the shark parts of the solar tracking light concentration exposure test method used to carry out the method of the present invention.
Figures 5 to 7 in the case where all of the reflected sunlight is transmitted through the infrared absorbing filter.
Figure 8 is a comparison graph of the surface temperature of the sample C when the Mizumoto Eyj method, the F method, the F method, and the F method were carried out. It is the same as in FIG. 1 except that an infrared absorption filter is shown.

In the conventional method, the reflected light from the sun's rays is filtered through 11 filters f Jjl while it directly hits the sample piece 8 from the reflector plate 6, as shown in Figure 1. -Ma1
In contrast, in the method of the present invention, a sample piece of 8t' is exposed to sunlight, as shown in each figure of FIGS.
The light is directly struck by the arrow and is reflected by the infrared absorption filter (9), and then irradiated onto the sample piece (8). There is no need to limit the amount of infrared light between the total reflection plate 6 and the sample piece B; It may be near the sample piece 8 as shown in Figure 2, near the middle 11 between the sample piece 8 and the reflector 6 as shown in Figure A, or directly above the reflective plate A as shown in Figure 4. In addition, in the method of the present invention, the reflection of a single ray of sunlight is not necessarily reflected.

All "41 (total infrared absorption filter 9 'c, a's mistake, peace of mind, trial Hj'j 8 (') Insertion K
L '-' -Cr,,L person1'u-)Y,'')
1. N rJ) Reflection 'E co -i'ili ',
1 infrared, 1' urine absorption filter 9 Xl, 11! i
L, other parts try that -1-U+FJY' 8 kc Teruj
Even if it's 11, it's too bad.

CU), the infrared absorption filter 9 is human i4. )'i
', 1-line anti'noj)'(:,no)shiro ()6 tl
,'! Illno-・rrls VCrself:ket”:
Good, io/・-fat: "ji)'1-ray reflected light ke infrared, yaki absorption fix Lter 9 needles, ivy 111・) δ-hiru 1
1″'f, i (i: riL Similarly to Figures 2 to 4, Figures 45 to 7 nk/■;zuν11<trial F
Near YoFt of Jlb, midway 1 between sample piece B and reflection 1 anti-6
-J close, I'm looking for 41 such as l cross 1 anti 60 self ten.

Book) 6 light method (・:Ll You can spray water and do it at the tail of 1j of 51 test bark, but in Fig. 2 v, f
In Fig. 5, U+, + <, the infrared absorption filter ♀ is the water spray nozzle/Eri is also −L0000G', and the water spray I6 force is 1. Trial 4-1. As far away as possible (preferably 1-1 from the Xγ position).

According to the method 7j of the present invention, the thick It:L reflected by the number of reflections
At least a part of the stomach r infrared absorption)・f Luther 4 Hide 1 H let the sample piece V this 1! (to shoot ['koeri,
Outdoor exposure test = 5 Despite the fact that much more sunlight shines on the station building in one bite, there is no problem in the temperature rise of test 44 > i, which does not affect the fixed connection of σIII. I was able to hold it down, and in the 71st, I tried the sample I-L one sake plot, and the beast was real. ] Can be carried out between.

Example: Solar tracking light concentration exposure test 1 with the structure shown in Figure 1 installed on the roof of a four-south building in Ichikawa City, Chiba Prefecture.
It gold is used and blue polyvinyl chloride metal layer is used (plate thickness 0
* J 5"b nL + coating film thickness 2 As shown in FIG. 2, an infrared filter 9 was installed in the vicinity of the gold sample sample frame 5b only in the optical path of the reflected light of the line corresponding to the sample piece 8 in between.

Therefore, reflection of L ray) Y; r; 711.4.b side 1
The remaining half of the sample pieces at +111 are 1 solid, s v, and the 2 are secondary *
:m Riso part 1 Direct irradiation]L ;'C, oI'
r Sample Shang 8 - Ku, (・τ1 Chromeno 'Armel, Peng f [': (・i k t4', ;sui'J ke, entering the first good, iJ 17-j eyes (Sho A (1564-August 51
J jH) 17J 5 lt47% La 18-to the temple [F-face half-shaped and back l4jllIII half-shaped blue 1;・
(It was recorded on the front page of the class 118, and is shown in Figure 08 of the final version.)

As shown in Figure 8, the light reflected by the reflector is 14)'
C.

The result of the line is 1, and then the jtf contact test) 1 is irradiated by Juto force I, 1. The Nijitsu J cheat' piece is the test 1.4 pieces of clothing] out (r
A degree is almost 1 peak in Fl, the highest temperature exceeds the peak temperature &j
, 122L: De・ritta. C Reni 7 attached 1-1 and 1 Kumin Mingkai person V Koyoruba 8-¥(・” 1.1-1 inside J Insect 1
Juto method's match Qyotsu (de 2 is on the front: ni?t I dialect, -
However, when using an infrared absorption filter for the solar tracking light concentration test force test method, the maximum is 9bCI without the upper limit.14 ,
111 of Figure 10i] Simple explanation of Figure 1.
2 to 7 are explanatory diagrams of the reverse side of the solar tracking light condensing exposure test device used to carry out the method of the present invention, and FIGS. 2 to 4 are schematic front views of reflected sunlight. All? Figures 5 to 7 show a dinner party in which a part of the reflected sunlight is transmitted through an infrared absorption filter, and Figure 8 shows the method of the present invention, the conventional method, and gold, respectively.
It is a comparison graph of li%Ii temperature of a sample piece when carrying out.

1. Support stand 2. Strut 6. Direction rotation mechanism 4.・Normal rotation mechanism 5. Rotating structure 5a...Reflector holding frame 3 arms)...Test piece claw 1ζJ＜ 6.Reflector 7...／Nikenken nozzle 8. Sample piece 9.Infrared absorption filter Arrow: Direction of light travel Figure 1 Figure 2 Figure 5

Claims (1)

[Scope of Claims] 1. Solar tracking to investigate the weather resistance of a sample by irradiating it with light by collecting reflected light from the sun and irradiating the sample while tracking the sun with a reflector that is wider than the sample surface. 1. A solar tracking light condensing exposure test method, which comprises transmitting at least a portion of the reflected sunlight through an infrared absorption filter and then irradiating the sample. 2. The method according to claim 1, in which at least a part of the reflected sunlight is transmitted through an infrared absorption filter, and then the weather resistance of the sample is tested by irradiating it with light under water spray. Sun tracking light concentration exposure test.