NIKE TEST # G 37 – UV COLORFASTNESS
1.O VERVIEW
The purpo of this test is to determine if white or colored samples of a material will yellow or fade after exposing the sample to ultraviolet radiation using the QUV accelerated weathering tester.This test will cover all textiles, synthetic leathers, leathers, threads, laces, webbing/gore tapes, painted components (decorative ink printing or sublimation printing), transparent, clear and translucent rubber, and foams (excluding EVA, Phylon, rubber), and plastics (excluding counters).
2.R EVISION H ISTORY
Initial version – 07/14/1995 - Deb Zaveson (?)
指数运算法则Revision 1 – 7/29/05 - Kely Wang / Amy Lyttle
Revision 2 – 10/11/2006 – Nancy Felten – Addition of sample size.
3.S AMPLE S IZE
阳光正好微风不燥The minimum sample size for UV colorfastness is 4, 3 test and one control
4.S PECIMEN P REPARATION
A.Textiles, synthetic leathers, leathers, foam slab sheets
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Die cut four 12 cm x 7.5 cm samples of each material to be tested. Label three
specimens as “test” specimens and one as “control” specimen.
B. Injected parts and painted components (example: TPU shank plate, nylon D-
<),
Hand cut four appropriate samples or whole parts that can be fit on the specimen tray of the QUV machine. Label three specimens as “test” specimens and one as “control” specimen.
C. Laces, webbing and gore tapes
Hand cut four ctions of 12 cm long. Label three specimens as “test” specimens and one as “control” specimen.
D. Threads
Hand cut four ctions of 1- meter long specimens. Roll each into a 12 cm long bundle. Label three specimens as “test” specimens and one as “control” specimen.
5.S ET-UP &A DJUSTMENT OF T EST E QUIPMENT
Test equipment type: QUV tester (Refer to Figure 1, 2 & 3).
Figure 1: Old Basic Model Figure 2: New Basic Model Figure 3: SE Model
UV lamp : UVA-340 Room temperature : 22 +/- 2 degrees C
5.1 Testing program t up for old basic model machine:
5.1.1 Push all tabs on the “cycle timer” dial to the outside to t the machine on continuous UV cycle.
5.1.2 Set the power to “ off” on the “ Ultraviolet cycle” panel. Set the thermostat knob to “1”
5.1.3 Discard 2 oldest lamps in each bank every 400 hours of lamp operation and rotate the other
lamps. Each bank will have lamps near the following ages: 0 hours, 400 hours, 800 hours and 1200 hours. See below for lamp replacement instruction (figure 4 & 5). Ret the lamp rvice time to zero.
5.2 Testing program t up for new basic model machine :
5.2.1. Press “program” button to program 1 t test duration ction. Set duration t on 24 hours and
elapd on zero. Set action at end of test on stop + alarm (There are five options for action if needed.)
5.2.2. Press “program” button to program 2 lect step or modify cycle ction. Select step 1 for UV
function. Set temperature on 45°c and test time on 24 hours.
5.2.3 Discard 2 oldest lamps in each bank every 400 hours of lamps operation and rotate the other
lamps. Each bank will have lamps near the following ages: 0 hours, 400 hours, 800 hours and 1200 hours. See below for lamp replacement instruction (figure 4 & 5). Ret the lamp rvice time to zero.
简单风景速写5.2.4 Check lamp Operation indicators to be sure all lamps are functioning correctly.
5.3 Testing program t up for SE model machine:
5.3.1. Follow the instruction of menu.
5.3.2. Every 400 hours, calibrate QUV controller tting to be 0.78 W/m2 by using CR-10 radiometer.
The Solar Eye controller has a built-in clock and, after 400 hours of lamp operation, the “
Calibrate” light on the controller will light up. When this occurs, it is time to calibrate the
system. (The “Calibrate” light will also light up for five conds every time QUV switches into the UV cycle. This indicates that the system is energized and the timer is operating properly.) If “Calibrate” light begins to flash at less than 400 hours, immediately calibrate QUV by CR-10 radiometer.
5.3.3. Every 5600 hours, replace all the lamps in QUV. The Solar Eye controller has a built-in alarm
system. If the irradiance measured by any of the nsors drops more than 5% below the Set
Point for more than 10 minutes, the “Actual Irradiance” digital display will begin to flash. If
“Actual Irradiance” begins to flash at less than 5600 hours, immediately recalibrate. If the lamps still cannot reach Set Point, replace the two lamps that the flashing nsor controls. Before
replacing the lamps, always shut off the main power and replace 2 lamps at the same time. If
you replace only one lamp, there will be a significant discrepancy in the top-to-bottom
irradiance uniformity. Always re-calibrate the system after changing lamps.
6.D ATA C OLLECTION &A NALYSIS
Testing procedure:
A.Fix the “test” samples face up on sample holder (figure 6) or sample tray (figure 7). Make sure
that there are no gaps between the sample holder and tray, and the sample is lying as flat as柯南简笔画
possible.
Figure 6: holder for mounting testing samples Figure 7: tray for mounting testing samples
B.Set the trays in the machine and place them in the middle of other empty sample
holders. It is necessary to keep the empty sample holders in the test chamber to fill all spaces in the machine.
C.Turn on “main power” switch. Put on UV protection glass and check that all UV
lamps are functional by removing one end panel of the machine and looking for a light
halo around all the lamps.
描写绿色的四字词语D. Note hour reading on “total time” dial. Remove the samples 24 hours after placing in
the machine by turning off the “main power’ switch.
Caution!
Don’t look at lighted lamps without eye protection. UV lamps can cau
sunburn and eye inflammation. If exposure to UV lamps is necessary, wear
UV absorbing goggles. Protect skin with opaque clothing or a quality
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sunscreen 5%PABA) or sun protection factor of 20, not a "suntan"
lotion.
E. Compare tested samples to the control sample. Evaluate the yellowing/fading of white
parts or colored parts on a 1-5 scale as noted below:
5.0 No color yellowing / fading change (test strip remains original color)
4.5 Very little color yellowing / fading change
4.0 Slight color yellowing / fading change
3.5 Moderate color yellowing /fading change
3.0 Definite color yellowing /fading change
2.5 Significant color yellowing / fading change
2.0 Strong color yellowing / fading change
1.5 Very large color yellowing/fading change
1.0Complete color yellowing /fading change
F. Report the “score” for all of the samples.
7.R EFERENCE
ASTM D-1148. Standard test method for Heat and Ultraviolet light discoloration of Lighted-colored surfaces for Rubber.
8.A PPENDIX
鸟鸣涧的意思Manufactured by
The Q-Panel Company
800 Canterbury Road, Cleveland, OH 44145 USA
Telephone: 440-835-8700
Fax: 440-835-8738
