This standard is applicable to the inspection and assessment of color change of colored textiles after short exposure to light. Such colored textiles change color after exposure, but will substantially return to their original color after storage in the dark. GB/T 8431-1998 Textiles color fastness test inspection and assessment of light-induced discoloration GB/T8431-1998 standard download decompression password: www.bzxz.net

GB/T8431-1998
This standard is revised according to TS0105-B05:1993 Textiles - Tests for colour fastness - Part B05: Test and assessment of optical discolouration>GR/T8431-1987. The revised text is equivalent to TS0105-B05:1993(E). This revision has made the following changes to GB/T8431-1998: 1. According to GB/T.1-1993 and the 1995.1.12 revision notice, the cover and title, the format of the article have been revised, and the foreword and the introduction have been added:
2. The preface has been written according to TS0105, and Chapters 2 and 3 are aligned, and Chapter 2 has an introduction. 3. The content of the test report has been added.
4. The unit of length is changed to m
5. Cancel the original note 1 of 5(>105-T305.
This standard shall replace GB/8431-1987 from the date of implementation. This standard is proposed by the China Textile Federation:
This standard shall be under the jurisdiction of the National Textile Standardization Technical Committee. This standard is jointly prepared by the Standardization Research Institute of the China Textile Federation, Shanghai Textile Industry Technical Supervision Institute, Shanghai Wool and Linen Textile Science and Technology Research Institute, and Beijing Wool and Flax Textile Science Research Institute. This standard The main contributors are Chang Zhimao, Zichun, Qiang Qiping, Shuyong, Zheng Zhijun and Hu Fang. This standard was first published in 1987 and revised for the first time in 1998. 86
GB/T8431-1998
ISO (International Organization for Standardization) is an international organization for the standardization of various countries (ISO members). The preparation of international standards is usually proposed by ISO (International Organization for Standardization). Consultative members have an interest in the items established by the ISO and have the right to propose changes to the committee. The ISO and non-official international organizations can contact the ISO and participate in the work. The ISO has close contact with the International Electrotechnical Commission (TEC) in all matters related to the standardization of electrotechnical technology. The draft international standards adopted by the technical committee are circulated to the members and voted on by the above members as international development. International Standard SQ105-B02 was developed by the Technical Change Committee of IS01C38/SC1 for the testing of yarn-dyed fabrics and dyes.
This 4th edition has been technically revised and the 3rd edition (IS1C5B02;1088) has been cancelled. 150105 months ago, 13 parts have been published. Each part is indicated by an alphabetical designation (e.g. Part A), with editions from 1973 to 1985. Each part consists of a series of "commercial", each number is referred to in the corresponding part and is indicated by a two-digit series number (e.g. "Part A01": These parts are now published as separate documents, with the original "Part" prefix retained unchanged. All visual effects are given in ISO 105-A01. 37
1 Scope
National Standard of the People's Republic of China
Textiles
Tests for colour fastness
Testing and assessment of photochromism
Textiles-Tests far colour rustnessIieertion and assessment pr pbotochromlsmCB/T 8431—1998
eqv1s105-805:1993
t*k:3-107
This standard is used to test and evaluate the color change of textiles after short-term exposure to sunlight. The color change of textiles is limited to a small amount, and the original color will be restored after a small amount of exposure. ? Referenced Standards
The provisions contained in the following standards are incorporated into this standard by reference. When this standard was published, all relevant versions were valid. All standards will be revised over time, and the possibility of using the new version of the following standards will be explored in the market. B250-5 Color Sample Card for Color Assessment (D1C5-A02: 1993) G/51:1-1997 General Rules for Color Fastness Test of Water-Resistant Fabrics V150105-AC2001) GB/942-1998 Color Fastness Test of Water-Resistant Fabrics - Light Fastness: Daylight (VSO105-B31191) GB/7-1998 Color Fastness Test of Water-Resistant Fabrics - Artificial Light: Arc (E9S) 135-B02:43 Quality
The product sample is exposed to weak light, but the exposure time is shorter than the time required to produce permanent changes. Immediately after exposure, use the color sample card to evaluate the color change of the sample, and then place the sample in the center for further evaluation. 4 Standard Materials and Equipment
2.1 Standard Non-Related Materials
The color card wool standard used in this test is usually G: 4??--190% 4.1.1 and 1.1.3 half-current blue rate standard 1 and color monitoring wool standard L2.
4.2 Equipment
4.2.1 Source: - Color sister channel 553K~6511K annual lamp, 3.2.? Report light! : In the light reading and test selection, a small filter is loaded between the standard readings to make the external light fully attenuated. The paint used is relatively weak. The rate is at least 20% in the range of 38um~7cm. If it is between 310m-320rm, it will drop to 0.4.2.3 Beneficial bacteria: The material is opaque, such as deep or covered card. The sample is wrinkled fabric. Care should be taken to avoid pressure on the surface of the object.
4.2.4 Color change card, Dutch G205 test
5.1 Size not less than m×mr
National Bureau of Quality and Technical Drawing 1998-11-26 Standard 38
1939-03-01 Real drag
5.2 Fabric attached to the card.
CB/6431—1998
5.3 Thread: tightly attached to the card or arranged in parallel and fixed on the upper and lower. 5.4 Fiber: uniformly arranged in layers and fixed on the card. 6 Operating procedures
6.1 Cover the blue single core standard 1 or blue wool standard 1.2 with the cloth (4.2.3) about half. 6.2 Place the covered blue wool standard 1 or 1.2 under a lamp and expose it to the sun continuously at an effective humidity of 10% (GB/TB427) until the color difference between the blue wool standard 1 and the unexposed part reaches the gray card level 4, and record the time required for this change. During this period, if the above conditions occur, the two tests are repeated. G.3 Use the sample (4.2.3) to separate the sample from the gray card level 4 for about half of the time. 6.4 Place the sample in the same pen as described in 6.2 and record the time required for the blue wool standard 1 to reach the gray card level 4. Or blue wool standard 1? 6.5 Take out the test piece from the original and cover it immediately at a high speed. Use the gray scale to rate the color difference between the original sample and the exploded part. If the color difference is less than level 4 on the gray scale, the sample has not changed color and needs to be tested again. 6.7 If the grayness of the original sample and the exploded part is less than level 4, the sample needs to be placed in a dark place at (20 ± 2)℃ and a relative humidity of 6% ± 2%. If color difference between the original sample and the exploded part can still be seen after 1 hour, the test piece needs to be tested again. The sample is subjected to normal pressure steam to further verify the effect. bzxz.net
The sample of the steam ink is used to test the material of the screen. The test sample is to be exposed on the side of the screen. The screen effect is reported in a neck. There is no water retention in the plate. The 68 stable test sheet is used to determine whether the package between the original sample and the exposed part is still required. If so, use the gray sample card to evaluate again. 7. The result shows that
1 If the test sheet is rusted (see 6.6), the difference between the white and the quality color sample is less than 4 levels. The test is not color-changing and can be evaluated according to GB/T34 26 B/8427 as shown in the correct operating conditions of the light resistance of the school out of the annual grade, 72 if the sample after the amount of drinking sleep is greater than the color sample card: New York, according to the color difference of 6.7 quality wet less than the color sample card -5, then the test has caused color change. Test color grade (GB426 or B/8427> must be followed by a number, write F and Qing color sample card grade teaching. Browse plan 6 (P3-L2G-7 (P2-3) 7.3 if the color between the non-screen and instant exposure part of the color sample card 5, Sichuan The sample does not have photochromic properties. The sample is rated for photochromic properties. In addition, the initial change is written in brackets after the rating. 7.4 For the temporary discoloration caused by the low content of the product, the existence of this phenomenon can be verified by a pyrogen test. The test report includes the following: A This standard number is GB 8431-18. The test results are expressed in the form of: A. The test results are expressed in detail.
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