色牢度测定（Colour fastness test）
First, the purpo of the experiment
Master soaping fastness, dry / wet rubbing fastness, sun fastness test and rating method, learn to u soaping test machine, color fastness tester and sun fastness testing machine.
战网安装不了Two 、 experimental method
Of soaping fastness were measured by standard ISO105/C01-1989 method, according to the national standard of ISO105/X12-1978 method for determination of rubbing fastness and gray scale evaluation, dyeing discoloration and lining fabric (or bleached plain) with color grades. Fade and color fastness 5stages, grade 5, grade 1 of the worst. According to GB413-78 method for sun fastness test, and then u GB-65 sun fastness blue standard rating, blue standard grade is divided into 8 files, 8 best, 1 worst.
Three, experimental content
(1) determination of fastness to soaping
1. experimental materials, instruments and pharmaceuticals
(1) experimental materials: dyeing specimens (4cm * 10cm), single fiber lined fabric (4cm * 10cm).
(2) experimental apparatus: washing color fastness tester (SW-122), grey card.
(3) experimental drugs: soap or standard synthetic detergent.
2. experimental steps
(1) single fiber lined fabric (two pieces): the first block is made of the same kind of fiber as the dyed sample, and the cond is made of fiber as stipulated in the standard. If the sample is a blend or fabric, the first piece is made of the main content fiber, and the cond is made of condary fiber.
(2) sample preparation: take a piece of dyeing specimen, sandwiched between two pieces of single fiber bonded fabric, and stitched along the edge to form a composite sample.
(3) soap solution prescription and conditions are shown in table 20-1.
Table 20-1 prescription and condition of soaping test
Reagent and condition dosage
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Soap (g/l) 5
Or synthetic detergent (g/l) 4
Bath ratio 50:1
Temperature (DEG) 40 + 2
Time (min) 30
(4) determination of operation: the combination of specimen is placed on the washing tank, tighten the lid, put the washing color fastness testing machine, first in the preheating tank preheated to 40 + 2 DEG C, and then placed in the test tank, open the rotating button, 30min in 40 + 2 deg. After completion, remove the composite sample and rin it two times with cold two distilled water. Rin 10min in the running cold water and squeeze out the moisture. Expand the composite sample so that the sample and lining fabric are connected only by one suture and suspended in air not exceeding 60 degrees centigrade. Finally, the fading of the dyed sample and the staining of the lining fabric were evaluated by grey card.
(two) determination of fastness to dry and wet rubbing
1. experimental materials and instruments
广州天河体育场(1) experimental materials: two specimens of dyeing (8cm * 25cm), Byu Bhai Bing Bbu (5cm * 5cm).
(2) experimental apparatus: tester for color fastness
(Y571-L).
2. experimental steps
(1) determination of dry rubbing fastness: spread the dyed sample onto the sample table of the tester for friction fastness, and rotate the cam to compress the sample. The Byu Bhai Bing Bbu (5cm * 5cm) is fixed on the friction head, and the warp and weft direction intercts with the warp and weft direction of
the sample to form 45 degrees. Put down the friction head, turn on the power switch, press the start button, and rub the head back and forth on the sample fabric 10 times. Lift the friction head, remove the bleached cloth, evaluation of dyeing samples faded and stained with grey cloth bleaching grade sample card.
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(2) determination of wet rubbing fastness of pre operation: Byu Bhai Bing Bbu (5cm * 5cm) padding in water meter roll rubbing fastness (with liquid rate is about 70%), then it will be fixed in the rubbing fastness test of friction on the head. Rub off and dry at room temperature,
Then u the gray scale evaluation of dyeing samples and bleaching stain grade cloth fade.
(three) determination of fastness to sunlight
1. experimental materials and instruments
(1) experimental material: a piece of dyed sample (15mm * 80mm), blue standard t (each level sampling 15mm * 80mm).
(2) experimental apparatus: Sun fastness tester.
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2. experimental steps
(1) arrange the blue standard sample in 8 order and fix it on the cardboard; the prepared sample is the same as above.
(2) the blue standard sample and test sample are placed on the sample rack of the sun fastness tester, and the opaque aluminum家规家训范本20条
plate (test machine special accessory) is ud to cover the middle part of the blue standard and test sample (about 1/5). Then the sample holder in said fastness testing machine, drying, when the 4 Blue standard sun to change degree equivalent to GB250-64 fastness fade like card 4 shown in degree (for the first tranche), then the original cover part and the part not covered on any cover, continue Yue sun, sun when 4 Blue standard change degree is equivalent to GB250-64 fastness fade like card 2 shown in the level (in the cond), the sample and the standard blue removed, placed in a dark place after 2H rating to cond rating shall prevail.
Four, experimental discussion
(1) the main factors affecting soaping fastness and fastness to sun drying are analyzed.
茶食品(2) the main reason for the difference of dry and wet rubbing fastness was analyzed.
Five, experimental requirements and precautions
(1) the same direction and woof test methods.
(2) to understand the color fastness of the product, you should lect at least three different parts of the dyed sample test, and then determine the average value of the results.
