AATCC_116_2001耐摩擦色牢度：立式旋转摩擦仪法

Ü»ª»´±°»¼ ·² ïçêê ¾§ ßßÌÝÝ Ý±³³·¬ó ¬»» Îßíèå ®»ª·­»¼ ïçêçô ïçéîô ïççìô ïççêå ®»¿ºº·®³»¼ ïçéìô ïçééô ïçèíô ïçèèô ïçèçå »¼·¬±®·¿´´§ ®»ª·­»¼ ïçèïô ïçèëô ïçèêå »¼·¬±®·¿´´§ ®»ª·­»¼ ¿²¼ ®»ó ¿ºº·®³»¼ îððïò ïò Ы®°±­» ¿²¼ ͽ±°» 1.1 This test method is used to deter- mine the amount of color transferred from the surface of colored textile mate- rials to other surfaces by rubbing. It is applicable to textiles made from all fibers in the form of yarn or fabric, whether dyed, printed or otherwise colored and especially to prints where the singling out of areas smaller than possible to test with the standard AATCC Crockmeter (AATCC Method 8) is required (see 13.1 and 13.9). 1.2 Test procedures employing test squares either dry or wet with water or other liquids are within the scope of this method. 1.3 Since washing, drycleaning, shrink- age, ironing, finishing, etc., may affect the degree of color transfer from a mate- rial, the test may be made before or after, or before and after, any such treatment, depending upon the information desired. îò Ю·²½·°´» 2.1 A test specimen held at the base of the Rotary Vertical Crockmeter is rubbed with standard test squares under con- trolled conditions (see 13.1). 2.2 Color transferred to the test squares is assessed by a comparison with the Gray Scale for Staining or AATCC Chro- matic Transference Scale (see 13.2). íò Ì»®³·²±´±¹§ 3.1 colorfastness, n.—the resistance of a material to change in any of its color characteristics, to transfer of its colo- rant(s) to adjacent materials or both, as a result of the exposure of the material to any environment that might be encoun- tered during the processing, testing, stor- age or use of the material. 3.2 crocking, n.—a transfer of colo- rant from the surface of a colored yarn or fabric to another surface or to an adjacent area of the same fabric principally by rubbing. ìò Í¿º»¬§ Ю»½¿«¬·±²­ NOTE: These safety precautions are for information purposes only. The pre- cautions are ancillary to the testing proce- dures and are not intended to be all inclu- sive. It is the user’s responsibility to use safe and proper techniques in handling materials in this test method. Manufac- turers MUST be consulted for specific details such as material safety data sheets and other manufacturer’s recommenda- tions. All OSHA standards and rules must also be consulted and followed. 4.1 Good laboratory practices should be followed. Wear safety glasses in all laboratory areas. ëò ß°°¿®¿¬«­ ¿²¼ Ó¿¬»®·¿´­ 5.1 Rotary Vertical Crockmeter (see Fig. 1, 13.1 and 13.3). 5.2 Crockmeter Cloth—standard 51 51 mm (2 2 in.) test squares (see 13.3, 13.4). 5.3 AATCC Chromatic Transference Scale (see 13.5). 5.4 Gray Scale for Staining (see 13.5). 5.5 White AATCC Blotting Paper (see 13.5). êò Ê»®·º·½¿¬·±² 6.1 Verification checks on the opera- tion of the test and the apparatus should be made routinely and the results kept in a log. The following observations and corrective actions are extremely impor- tant to avoid incorrect test results where abnormal crock images can result and in- fluence the rating process. 6.2 Use an in-house poor crocking fab- ric as a calibration specimen and conduct three dry crock tests. 6.2.1 A poor circular image with un- even dye pick-up may indicate the crock- ing finger needs resurfacing (see 13.6). 6.2.2 A double image may indicate a loose clip (see 13.6). 6.2.3 Scuff marks to the sides of the specimen indicate the loops to the wire clips are positioned downwards and are not high enough to prevent rubbing the specimen surface. 6.2.4 Confirm the wet pick-up tech- niques (see 9.2). 6.2.5 Replace the abrasive paper on the tester base if it is smooth to the touch in the crocking area compared to the adja- cent area, or if slippage of the specimen is noticed (see 13.7). éò Ì»­¬ Í°»½·³»²­ 7.1 Materials of nearly any construc- tion presenting a surface area of approxi- mately 25 mm (1 in.) square or more can be tested. èò ݱ²¼·¬·±²·²¹ 8.1 Prior to testing, pre-condition and condition the test specimens and the crock squares for dry crock testing as di- rected in ASTM D 1776, Conditioning Textiles for Testing. Condition each spec- imen for at least 4 h in an atmosphere of 21 ± 1°C (70 ± 2°F) and 65 ± 2% RH by laying each test specimen or crock square separately on a screen or perforated shelf of conditioning rack. çò Ю±½»¼«®» 9.1 Dry Crocking Test. 9.1.1 Tilt the upper half of the machine away to allow access to the base of the machine. Place a test square on the end of the vertical rod and fasten it with spring clip. 9.1.2 Hold the test specimen on the machine base at the point the vertical rod contacts the base. Tilt the upper half of the machine back to the operating posi- tion with the test square at the end of the shaft in contact with the test specimen. Place the weight supplied with the Crock- meter on the vertical shaft to give the rub- bing finger a downward force of 11.1N ± 10% (40 oz ± 10%). 9.1.3 With the left hand, hold the test specimen in position on the base. Turn the crank 20 turns with the right hand. This produces about 40 reciprocal turns of the vertical shaft. 9.1.4 Tilt the upper part of the machine back and remove the test specimen and the test square, condition and evaluate. ßßÌÝÝ Ì»­¬ Ó»¬¸±¼ ïïêóîððï ݱ´±®º¿­¬²»­­ ¬± Ý®±½µ·²¹æ ન®§ Ê»®¬·½¿´ Ý®±½µ³»¬»® Ó»¬¸±¼ Ú·¹ò ï‰Î±¬¿®§ ª»®¬·½¿´ ½®±½µ³»¬»®ò ݱ°§®·¹¸¬ ̸» ß³»®·½¿² ß­­±½·¿¬·±² ±º Ì»¨¬·´» ݸ»³·­¬­ ¿²¼ ݱ´±®·­¬­ Ю±ª·¼»¼ ¾§ ×ØÍ «²¼»® ´·½»²­» ©·¬¸ ßßÌÝÝ Ò±¬ º±® λ­¿´»Ò± ®»°®±¼«½¬·±² ±® ²»¬©±®µ·²¹ °»®³·¬¬»¼ ©·¬¸±«¬ ´·½»²­» º®±³ ×ØÍ ó ó À À ô À ô ó À ó À ô ô À ô ô À ô À ô ô À ó ó ó 9.2 Wet Crocking Test. 9.2.1 Establish technique (see 13.8) for preparing wet crock cloth squares by weighing a conditioned square, then thor- oughly wet out white testing square in distilled water. Prepare only one square at a time. 9.2.2 Bring the wet pick-up to 65 ± 5% by squeezing the wet testing square be- tween white AATCC blotting paper through a hand wringer or similar conve- nient means. 9.2.3 Avoid evaporative reduction of the moisture content below the specified level before the actual crock test is run. 9.2.4 Continue as directed in 9.1. 9.2.5 Air dry the white test square, then condition (see 8.1) before evaluating. In the case of napped, brushed or sanded material when loose fiber might interfere with the rating, remove the extraneous fi- brous material by pressing lightly on the crock circle with the sticky side of cello- phane tape before evaluating. ïðò Ûª¿´«¿¬·±² 10.1 Rate the amount of color trans- ferred from the specimen under examina- tion by means of the AATCC Chromatic Transference Scale or the Gray Scale for Staining (see 13.2, 13.5). 10.2 Back the test square with three layers of test cloth while evaluating. 10.3 It will be noted that the color transfer is usually greater near the edge of the tested circle than the center. 10.4 Rate the color transfer at the edge of the tested circle. 10.5 Rate dry and wet crocking fast- ness as follows: Grade 5—negligible or no color trans- fer. Grade 4.5—color transfer equivalent to Step 4-5 on the Gray Scale for Staining or Row 4.5 on the 9-step AATCC Chro- matic Transference Scale. Grade 4—color transfer equivalent to Step 4 on the Gray Scale for Staining or Row 4 on the 5-step or 9-step AATCC Chromatic Transference Scale. Grade 3.5—color transfer equivalent to Step 3-4 on the Gray Scale for Staining or Row 3.5 on the 9-step AATCC Chro- matic Transference Scale. Grade 3—color transfer equivalent to Step 3 on the Gray Scale for Staining or Row 3 on the 5-step or 9-step AATCC Chromatic Transference Scale. Grade 2.5—color transfer equivalent to Step 2-3 on the Gray Scale for Staining or Row 2.5 on the 9-step AATCC Chro- matic Transference Scale. Grade 2—color transfer equivalent to Step 2 on the Gray Scale for Staining or Row 2 on the 5-step or 9-step AATCC Chromatic Transference Scale. Grade 1.5—color transfer equivalent to Step 1-2 on the Gray Scale for Staining or Row 1.5 on the 9-step AATCC Chro- matic Transference Scale. Grade 1—color transfer equivalent to Step 1 on the Gray Scale for Staining or Row 1 on the 5-step or 9-step AATCC Chromatic Transference Scale. 10.6 Average individual results to the nearest 0.1 grade when multiple speci- mens are tested or when a panel of evalu- ators rate color transfer. ïïò λ°±®¬ 11.1 Report the grade determined in 10.5. 11.2 Indicate whether dry or wet test. 11.3 Indicate whether Gray Scale for Staining or AATCC Chromatic Transfer- ence Scale was used (see 13.2). ïîò Ю»½·­·±² ¿²¼ Þ·¿­ 12.1 Precision. Precision for this test method has not been established. There is no contemplated activity to establish pre- cision for this method. Users of the method should use standard statistical techniques in making any comparisons of test results for either within-laboratory or between-laboratory averages. 12.2 Bias. The true value of colorfast- ness to crocking can be defined only in terms of a test method. There is no inde- pendent method for determining the true value. As a means of estimating this property, the method has no known bias. ïíò Ò±¬»­ 13.1 The Rotary Vertical Crockmeter pro- vides a reciprocating rotary motion to the test finger and a selected pressure on the test fin- ger. 13.2 It has been noted that different grades may result depending upon whether the Gray Staining Scale or AATCC Chromatic Trans- ference Scale is used for the evaluation. It is, therefore, important to report which scale was used (see 11.3). 13.3 Available from Atlas Electric Devices Company, 4114 N. Ravenswood Ave., Chi- cago IL 60613; tel: 773/327-4520; fax: 773/ 327-5787. 13.4 Available from Testfabrics Inc., P.O. Box 26, 415 Delaware St., W. Pittston PA 18643; tel: 570/603-0432; fax: 570/603-0433; e-mail: testfabric@aol.com. 13.5 Available from AATCC, P.O. Box 12215, Research Triangle Park NC 27709; tel: 919/549-8141; fax: 919/549-8933; e-mail: orders@aatcc.org. 13.6 The abrasive material currently sup- plied with the Rotary Vertical Crockmeter is “Wet or Dry Waterproof Silicon Carbide, W-320-A.” Replacement pieces are available from Atlas Electric Devices Co. (see 13.3). 13.7 For very critical evaluations and in cases of arbitration, ratings must be based on the geometric gray scale for evaluating stain- ing. 13.8 Experienced operators do not have to repeat this weighing procedure during a test session once the technique has been estab- lished. 13.9 Specimens tested by both test methods may show dissimilar results. There is no known correlation between the two methods. ݱ°§®·¹¸¬ ̸» ß³»®·½¿² ß­­±½·¿¬·±² ±º Ì»¨¬·´» ݸ»³·­¬­ ¿²¼ ݱ´±®·­¬­ Ю±ª·¼»¼ ¾§ ×ØÍ «²¼»® ´·½»²­» ©·¬¸ ßßÌÝÝ Ò±¬ º±® λ­¿´»Ò± ®»°®±¼«½¬·±² ±® ²»¬©±®µ·²¹ °»®³·¬¬»¼ ©·¬¸±«¬ ´·½»²­» º®±³ ×ØÍ ó ó À À ô À ô ó À ó À ô ô À ô ô À ô À ô ô À ó ó ó