This standard specifies the second test in a series of five tests for color fastness to washing and has been established as a test method for color fastness to washing of colored textiles. This series of tests covers a range of washing operations from mild to severe. GB/T 3921.2-1997 Textiles - Tests for color fastness - Color fastness to washing: Test 2 GB/T3921.2-1997 Standard download decompression password: www.bzxz.net

1Cs_59. 080. 01
Standard of the People's Republic of China
GB/T 3921:2-1997
eqv ISo 105-c02:1989
Textiles
Tests for colour fastness
Colour fastness to washing: Test 2
Textilcs-Tests for colour fastnessColour fastness to washing: Test 21997-06-09 Issued in the city
State Administration of Technical Supervision
1997-12-01 Implementation
GB/T 3921:2
This standard is equivalent to 1S(10:i-C02,1989: one of the five standards for the test method of color fastness to washing. This standard has made the following modifications to G2S21-A3: 1. According to GH/T1.1-1993, the cover and title format have been modified, the following preface and ISO have been added, and three reference standards have been added. The three foreign test instruments have been added. The detergent is added to Appendix B. 3. The length is changed to mm
3, and the steam is changed to blue
4. The fabric combination test specimen is changed from chain four sides to key one short side: if necessary, it shall be specified separately. 5. The use of multi-fiber interlining and single fiber interlining is added. . From the date of implementation of this standard, the China Textile Industry Association will issue this standard.
This standard is under the jurisdiction of the Standardization and Chemical Research Institute of the China Textile Industry Association. The draft of this standard was jointly drafted by the Standardization and Chemical Research Institute of the China Textile Industry Association, the Shanghai Textile Standards and Metrology Research Institute, and the Shanghai Textile Science and Technology Research Institute. The main drafters of the technical standard are Qi Yamin, with the exception of Lu Wenbao, Li Qidanmin. This standard was first issued in 1585.
International Standing Committee of the China Textile Industry Association Standardization Institute is responsible for interpreting G8/T3921.21997
ISO Foreword
1S (International Standard The United Nations Organization for Standardization (UNISOC) is a national standardization organization (member of the United Nations Organization for Standardization). The preparation of international standards is usually completed by the United Nations Technical Committee (UNISOC). Any member or member of the United Nations Technical Committee has the right to participate in the official and unofficial international committee. It can also work with the United Nations Organization for Standardization (UNISOC) and the International Electrotechnical Commission (IEC) in all matters related to electrotechnical standards. The draft international standard is submitted to the member countries for review by the technical committee. It can be published as an international standard only if more than 75% of the votes are in favor. International Standard 150) 105.C02 is adopted by the United Nations Technical Committee for Standardization (UNISOC). This is the third edition of the International Standard. The technical order was cancelled and the third part (1S () 105-02: 1987) was revised. 01 (5) There are three "parts" under each part: Part A\The publication period is between 197813, and each part is listed as a "chapter". Each chapter is prefixed with a two-digit semi-numerical number (such as "A01 chapter\], these "tubes" are now published in separate volumes, but the original military name is still maintained for the specified "parts". JS0105-A01 gives the full catalogue, 1 Scope
National Standard of the People's Republic of China
Textiles
Color fastness test
Color fastness to washing: test 2
Textiles-Testsfor Colour fastness to washing : Test 2GB/T 3921-2-1997bzxZ.net
eqiso105-c02.1989
代C9392183
This standard specifies the second test in a series of five tests for colour fastness to washing, and is a test method for studying the colour fastness to washing of coloured fabrics. The series of tests includes a range of operations from mild to severe. Note: This method only measures the effect of residual water on the colour of fine fabrics, and does not reflect the full flow of water. 2 References
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. The versions shown are valid when this standard is published. All versions will be revised. The parties using this standard should explore the possibility of using the latest versions of the following standards. G8250-1995 Grey sample card for color change assessment (idIS0) 105.A02.153) GB251.-1995 Color sample card for color reduction (idtTS105-A03:1993) GB/T6151-1997 General rules for color rate test of discoloration products (qISO105-A01:1994) GB7564-7558-37 Standard for color half-catalysis test of anti-fabric products Textile Specification (ncISO105-Fr1985) GB11401-89 Textile Color Rate Test Multi-Fiber Fabric Specification (neIS () 105-F1G; 1939) 3 Original Yao
The textile sample is sewn with one or two pieces of standard adjacent fabrics, placed in soap solution, and stirred by machine at a specified time and temperature, and then rinsed and washed. The sample is evaluated for color change and staining of adjacent fabrics using a gray scale. 4 Equipment and Reagents
4.1 Suitable machine and test device (according to Appendix A). It consists of a water-jet tester equipped with a rotating shaft. The rotating shaft radially supports a number of glass or stainless steel containers with a capacity of 550mL + 5mL, with a diameter of 75mm + 5mm, a height of 125mm and a height of 10m. The distance from the center of the shaft to the exposed bottom is 45mm ± 11mm. The rotation speed of the shaft and the penetrator is 40/min ± 2z/mis, and the water bath temperature is controlled by a thermostat to keep the test solution at the specified temperature of 50℃ + 2℃. 4.2 Soap - moisture content shall not exceed 5%. The following requirements shall be met (by mass): Free alcohol (as Na2CO3)
Free toluene (as NaOH)
Total fatty matter
Preparation of soap root fat freezing point
1> Replacement of method 2 in G3921-3, approved by the State Bureau of Technical Supervision on June 9, 1996 3.3% (maximum)
0.1% (maximum)
850g/kg (small amount)
30C (maximum >
50℃)
Implementation on December 1, 1997
Soap shall not contain fluorescent equivalents.
GD/T3921.2
4.3 Soap solution, per liter of water (4.F) 58 fertilizer rate (1.2) 1997
4.4 Paste fabric (according to 4,4.1 or 4-4.2), select and -4.4.1 conforms to GB1:44 multi-fiber pasted fabric and -4.4.2 conforms to GB7554~7358. Two pieces of single fiber pasted fabric. The first piece is made of the same fiber selected, and the second piece is made of the fiber specified in Table 1. If the sample is a woolen or interwoven fabric, one piece is made of the main fiber, the second piece is made of the secondary fiber, or other non-specified, the first piece is wool or cotton. 4.4.3 If necessary, use a piece of uncolored fabric (polyester). The first piece is wool or cotton. 4.5 The color sample card used for evaluating the color change should comply with GB250. The gray scale card used for evaluating the color change should comply with GB251. 4.6 Grade 3 water (according to GB/T6151-1297.8.1). 5.1 If the product is a fabric, prepare the sample as follows: m) Take a 40mm×100mm sample and alternately touch the edges of two 40mm×10cmm single-fiber fabrics (4.4.2) with a 40mm×100mm multi-fiber pasted fabric (1) and make a combination test sample (or as specified). 5.? The sample is a good sample. Take the yarn or fiber about half of the total weight of the lining, and prepare the sample according to one of the following methods.) Place it between a 40mm×10cm multi-fiber fabric and a 40m:×100am undyed fabric (4.4.3). Combine along the four-way (according to GB/[6151-1597.9.3.3.4) to form a combined test sample. b) Clamp two pieces of 4m×1mm1 single fiber lining materials specified in the specification, sew along the back edge to form a combined test group, and change the order to
6.! Put the combined test group in a container, inject the pre-conditioning to 0 2 (need the most soap reduction (4.3), so that the ratio is 50:16.2 combined test 50 (2 (treatment 46min:6.3 out of the test group, with cold blue water (4.6) Wash once, rinse in cold water for 10 minutes, remove moisture, unfold component samples, and hang in air at a temperature not exceeding 60°C. 6.4 Grey sample card (4.5) Assess the color change of samples and staining of adhesives: The test report shall include the following:
? ... 3921.2-1997
(Indicative Appendix)
Test Equipment
41 The test equipment applicable to this standard is 5W-13, SW-8.SW-4 wash fastness tester. See the National Science and Technology Commission's scientific and technological research results registration number 500740.
A2 Other devices that can produce the same results as those specified in 4.1 may also be used.
(Indicative Appendix)
Synthetic Detergents Agent
If necessary, synthetic detergent 4 can be used instead of chasing tablets 5. The composition of synthetic detergent:
Sodium benzene sulfonate (average length of sulfonate)
Sodium butyl alcohol and its ethylene oxide compound (number of ethylene oxide: 14) Soap chain length: C13%-26%.c~%--%)
Tripolyphosphorus number
Sodium tantalum SiO2)/Na(=3.3/1)
Integral fiber
Art Second Floor National Art Tantalum
Sodium tantalum
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