1、DEUTSCHE NORM November 1997 DIN Tests for colour fastness of textiles Part 204: Dispersibility of disperse dyes English version of DIN EN IS0 105-204 EN IS0 105-204 (IS0 105-204 : 1995) ICs 59.080.01 Descriptors: Textiles, testing, disperse dyes, dispersibility. Textilien - Farbechtheitsprfungen - T
2、eil 204: Dispergierverhalten von Dispersionsfarbstoffen (IS0 105-204 : 1995) European Standard EN IS0 105-204 : 1997 has the status of a DIN Standard. A comma is used as the decimal marker. National foreword This standard has been published in accordance with a decision taken by CEN/TC 248 to adopt,
3、 without alteration, International Standard IS0 105-204 as a European Standard. The responsible German body involved in its preparation was the Normenausschu Materialprfung (Materials Standards Committee). DIN IS0 3696 is the standard corresponding to International Standard IS0 3696 referred to in c
4、lause 2 of the EN. EN comprises 5 pages. No pari of this standard may be reproduced without the prior permission of Ref. No. DIN EN IS0 105-204 : 1997-1 Y Deutsches Institut fr Normung e. V., Berlin. wth Verlag GmbH, D-10772 Berlin, has the exclusive right of sale for German Standards (DIN-Normen).
5、English price group 06 Sales No. 1106 04.98 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IS0 105-204 September 1997 ICs 59.080.02 Descriptors: Textiles, testing, disperse dyes, dispersibility. English version Text i I es Tests for colour fastness Part 204: Dispersibility of disperse dyes (IS
6、0 105-204 : 1995) Textiles - Essais de solidit des teintures - Partie 204: Dispersibilit des colorants de dispersion Dispersionsfarbstoffen Textilien - Farbechtheitsprfungen - Teil 204: Dispergierverhalten von (IS0 105-204 : 1995) (IS0 105-204 : 1995) This European Standard was approved by CEN on 19
7、97-08-24. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obta
8、ined on application to the Central Secretariat or to any CEN member. The European Standards exist in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secre
9、tariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Ki
10、ngdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels O 1997. CEN - All rights of exploitation in any form and by any means reserved worldwide for CEN national members. Ref. No. EN IS0
11、105-204: 1997 E Page 2 EN IS0 105-204 : 1997 Foreword International Standard IS0 105-204 : 1995 Textiles - Tests for colour fastness - Part 204: Dispersibility of disperse dyes, which was prepared by ISO/TC 38 Textiles of the International Organization for Standardization, has been adopted by Techni
12、cal Committee CEN/TC 248 Textiles and textile products, the Secretariat of which is held by BSI, as a European Standard. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, and conflicting national standards withdrawn
13、, by March 1998 at the latest. In accordance with the CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Ita
14、ly, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. Endorsement notice The text of the International Standard IS0 105-204 : 1995 was approved by CEN as a European Standard without any modification. NOTE: Normative references to international publica
15、tions are listed in Annex ZA (normative). 1 Scope 3.1 dispersibility: Degree to which particles can be broken down to some minimum size such that they This part of ISO 105 describes a method for deter- will pass through the interstices of a reference filter mining the dispersibility, as evaluated by
16、 filtering time paper. and filter residue, of disperse dyes. This test method is used for determining the degree of dispersion under specified conditions in aqueous 4 Principle media only. A quantity of disperse dye is predispersed, heated and NOTES passed through filter papers of specified pore siz
17、e. Using the time of passage and retention of dye on the 1 The results of this test method can vary widely unless all filter paper, the dispersibility of the dye is then evalu- tests are run under exactly the conditions outlined. Any ated, variation in the conditions can cause a test to be invalid.
18、Results have been shown to be reproducible in several laboratories when the specified conditions are met. Three variants of the test, depending on the intended dye application, are outlined. 2 Variations in results can be caused by differences in the diameter of the filter funnel, due to the differe
19、nces in sur- face area which result, and to variations in the size and density of the holes in the filter funnel. 5 Safety precautions 2 Normative reference The following standard contains provisions which, through reference in this text, constitute provisions of this part of IS0 105. At the time of
20、 publication, the edition indicated was valid. All standards are subject to revision and parties to agreements based on this part of IS0 105 are encouraged to investigate the possi- bility of applying the most recent edition of the standard indicated below. Members of IEC and IS0 maintain registers
21、of currently valid International Standards. IS0 3696:1987, Water for analytical laboratory use. 5.1 It is the users responsibility to use safe and proper techniques in handling materials in this test method. Consult manufacturers for specific details such as material safety data sheets and other rec
22、- ommendations. 5.2 Good laboratory practice should be followed. Wear safety glasses in all laboratory areas and a single-use dust respirator while handling powder dyes. 5.3 safety regulations. Users should comply with any national and local 6 Apparatus and materials 3 Definition During the test, us
23、e only reagents of recognized ana- lytical grade and only grade 3 water as defined in For the purposes of this part of IS0 105, the following definition applies. IS0 3696. Page 3 EN IS0 105-204 : 1997 Application of dye Test 6.1 Nutsch filter (Bchner funnel), of glass, stain- less steel or porcelain
24、, with inner diameter 110 mm, 192 holes and with a total surface area of holes (evenly distributed) of not less than 200 mm2. Filter paper pH of combination dispersion 6.2 Filter papersl), of diameter 110 mm, as follows. - Type A: Having a pore size to retain particles above 8 pm in diameter; - Type
25、 B: Having a pore size to retain particles above 25 pm in diameter. Other papers may be used if quality and microretention characteristics are exactly the same. Where dispersion 1 requirements are critical (such as package dyeing of I polyester) 6.3 Stainless steel ring), with approximate dimen- sio
26、ns 103 mm i.d., 11 1 mm 0.d. and 8 mm thickness, to hold filter paper of 11 O mm diameter in place. i For dyeing on polyamide (carpet and apparel dyeings) 6.4 Filter flask, with side tube, of capacity 1 O00 ml. 6.5 Piston or membrane pump, of sufficiently high suction capacity to create a full vacuu
27、m of at least 50 kPa under pressure. 6.6 Apparatus to adjust and maintain the vac- uum, including vacuum rubber tubing, preferably coupled with a manometer. 6.7 Stopwatch. 6.8 Beakers, of capacity 400 ml or larger. 6.9 Balance, analytical. 6.10 Tetrasodium pyrophosphate (TSPP), 1 O YO (m/V) (1 O0 g/
28、1) aqueous solution prepared with grade 3 water complying with IS0 3696. 6.11 Acetic acid, 10 % (V/V) (mass fraction 10 YO) aqueous solution prepared with grade 3 water com- plying with IS0 3696. 6.12 Filter-residue scale2), consisting of photo- graphs representing five classes (levels) of retention
29、 of filter residue and used as part of the evaluation pro- cedure. 6.13 Water, complying with grade 3 of IS0 3696, optionally containing a complex-forming agent 1e.g. 0.25 g/I of 25 % (m/V) (250 9/11 solution of ethylene- diaminetetraacetic acid (EDTA) or nitrilotetraacetic acid (NTA). Such addition
30、 shall be mentioned in the test report. 6.14 Stirrer, laboratory, magnetic. 6.15 Graduated cylinder, 250 ml capacity. 6.16 pH-meter. 7 Procedure 7.1 Selection of test Select the test (I, II or ill) to be used according to the intended application of the dye (see table 1). II 111 For dyeing at larger
31、 liquor ratios (such as beck dyeing) 43 to 5.0 4,5 to 5,O 9.0 to 10,o 7.2 Preparation of dispersion Using the analytical balance (6.9). weigh out 2.0 g I0,l g of dye powder, to be tested. Weigh out an equivalent quantity of the manufac- turers reference dye, and carry out the same test on this dye.
32、The reference dye is always run as a control so that the influence of any test variables on the results is minimized. 1) For information on the source of supply of sets of filter papers (6 21, and stainless steel rings (6 3) apply to the organizations listed in clause 8 of IS0 105-AO1 1994, Textiles
33、 - Tests for coour fastness - fart AO? Genera/ pnncipes of testing 2) This scale is available from the American Association of Textile Chemists and Colorists (AATCC), P O Box 1221 5, Research Triangle Park, NC 27709, USA Page 4 EN IS0 105-204 : 1997 If required, on dyes of high tinctorial strength,
34、reduce the dye concentration to 1 g/200 ml and report this fact in the test report. with an increased vacuum, dyes of larger particle size will block the filter paper, slowing the filtration rate and thus swelling the paper more. This results in longer filtration times and more dye being retained on
35、 the filter paper. Add the weighed dye slowly to 200 mI of vigorously agitated water at 45 in a 400 ml beaker (6.8). Use a magnetic stirrer (6.14). Adjust the pH with the pH-meter (6.1 6) as follows: With the vacuum on, immediately pour the dye dis- persion into the funnel and begin timing. Record t
36、he time of passage of the dispersion, up to 120 s to the nearest second. The end Doint is reached when the - for Tests I and II: pH 4,5 to pH 5,O using acetic acid (6.1 1): - for Test III: pH 9,0 to pH 10.0 using TSPP (6.10). Heat to 70 OC k 2 “C and hold at this temperature for 5 min rt 1 min. Stir
37、 with the magnetic stirrer to prevent localized heating. NOTE 3 Excessive time lags and holding temperatures may affect the outcome of the test. Optionally, disperse and stir the dye at 25 “C k 2 OC. In this case, no preheating of the Bchner funnel (see 7.3) is necessary. If this option is used, it
38、shall be stated in the test report. 7.3 Filtration of dispersion appearance of the filter paper changes from a wet look to a dry look. Allow the filter papers to dry and evaluate as outlined in clause 8. NOTE 5 In order to give more reproducible results, es- pecially with dyes of residue Class 3 or
39、lower, it may be advisable to rinse the filter paper while it is in the funnel with 10 ml to 15 ml of water (6.13) before drying. This will aid in the removal of any colloidal dye dispersion that actu- ally has a particle size smaller than pore size of the paper being employed. Complete the test fro
40、m the start of dispersion to the end of filtration within 15 min. 8 Classification of dye dispersibility Heat 1 O0 ml to 300 ml of water to 70 “C and pour into the Bchner funnel (6.1) without any filter paper in place, to preheat the funnel. Using the time of passage and the retention of dye on the
41、filter paper, the dispersibility of the dye is evalu- ated. Wait 25 s f 10 s. Turn the vacuum on (6.4 to 6.6) and keep on until the water has passed through the fun- nel. Turn the vacuum off, immediately dry the funnel and then place the correct filter papers (6.21 in the funnel (see table 1). Two f
42、ilter papers are used to give a more uniform vacuum across the filtering surface. The filter paper is used as received in the box, with the smooth side up to avoid variations due to texture differences on the rough side. If different types of filter paper are used, the coarser paper shall be underne
43、ath. Insert the stainless steel ring (6.3) in the funnel on top of the filter papers, and turn on the vacuum. Adjust the vacuum to 3 kPa to 4 kPa, which is equivalent to a 300 mm to 400 mm water column under pressure. NOTE 4 Since filter paper is cellulosic in nature, it swells readily when wet. The
44、refore, if the paper is prewetted to hold it in place in the funnel, the filtration time will be in- creased, this increase depending on the temperature of the wet filter paper and the time which has been allowed to elapse since wetting. Thus it is imperative that the filter paper is not wet prior t
45、o the test, since the rnicroretention characteristics of the paper will be reduced. This is the reason for using the stainless steel ring, which holds the filter paper in place, making prewetting unnecessary. With dyes which have a very small particle size, the speed of filtration of the dispersion
46、will not be changed to any great extent by changing the vacuum. However, with dyes of larger particle size. reducing the vacuum can result in shorter filtration times, even though the suction is not as great. This is because, 8.1 From the recorded time of passage through the filter paper, classify t
47、he dispersibility of the dye as follows: Class A O s to 24 s Class B 25 s to 49 s Class C 50 s to 74 s Class D 75 s to 120 s Class E 120 s and over 8.2 Compare the residue on the filter paper against the filter-residue scale (6.12). Also examine the paper for any visible coarse or granular particles
48、. If particles are present, the dye is automatically rated as Class 1 (poor dispersibility). If no coarse residue is present, classify the dye as follows: Class 5 Excellent dispersibility Class 4 Class 3 Class 2 Class 1 Poor dispersibility Intermediate values in comparison with the filter resi- due
49、scale are interpolated. Page 5 EN IS0 105-204 : 1997 9 Test report e) the class according to filtration time (see 8.1); The test report shall include the following information: f) the class according to amount of residue (see 8.2) a) b) C) d) the number and year of publication of this part of IS0 105, ;.e. IS0 105-ZO4:1995; EXAMPLE description of the sample tested; the test number (see table 1); A dyestuff tested using Test I, giving a filtration time of 17 s and a filter paper residue rated as Class 3 in comparison with the filter-residue scale is classified i
