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This standard is developed in accordance with the rules given in GB/T 1.1-2020 Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents.
This standard is a revision to QB/T 2924-2007 Fur - Test methods for color fastness to perspiration.
The following main technical changes have been made with respect to QB/T 2924-2007:
a) clause "Normative references" is adjusted and supplemented with some new items (see Clause 2 hereof; Clause 2 of Edition 2007);
b) clause "Terms and definitions" is added (see Clause 3 hereof);
c) revision is made to clause "Principle" (see Clause 4 hereof; Clause 3 of Edition 2007);
d) the requirements on the "color fastness to perspiration tester" are adjusted and refined (see 5.1 hereof; 4.2 of Edition 2007);
e) the tolerance of artificial sweat pH is included (see 5.3 hereof; 4.5 of Edition 2007);
f) the description about adjacent fabrics is simplified (see 5.4 hereof; 4.4 of Edition 2007);
g) the requirements on "gray scale" are supplemented and adjusted (see 5.5 and 5.6 hereof; 4.1 of Edition 2007).
h) "test water", "pH meter", "sprinkler" and "press knife" are added to sub-clause "Apparatus and materials" (see 5.7 to 5.10 hereof);
i) the content on "sampling and specimen preparation" is refined and the dimensions of the standard cotton adjacent fabrics are revised (see Clause 6 hereof; Clause 5 of Edition 2007);
j) the test steps are modified and refined (see Clause 7 hereof, see Clause 6 of Edition 2007);
k) in sub-clause "Evaluation of results", the evaluation on fur duvet specimen discoloration is added and the requirements on the light source for evaluation are modified (see Clause 8 hereof; Clause 7 of Edition 2007);
l) sub-clause "Evaluation deviation" is added (see Clause 9 hereof);
m) the content about "Test report" is adjusted (see Clause 10 hereof; Clause 9 of Edition 2007).
This standard was proposed by China National Light Industry Council.
This standard is under the jurisdiction of SAC/TC 252 National Technical Committee on Leather Industry of Standardization Administration of China.
The previous editions of this standard are as follows:
——the standard was issued firstly in 2007 as QB/T 2924-2007;
——this edition is the first revision.
Fur - Test methods for color fastness to perspiration
1 Scope
This standard specifies the test method for color fastness to perspiration of fur.
This standard is applicable to determination of color fastness to perspiration of furs.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 250 Textiles - Tests for color fastness - Grey scale for assessing change in color
GB/T 251 Textiles - Tests for colour fastness - Gray scale for assessing staining
GB/T 6151 Textiles - Tests for colour fastness - General principles of testing
GB/T 6682 Water for analytical laboratory use - Specification and test methods
GB/T 7568.2 Textiles - Tests for colour fastness - Standard adjacent fabrics - Part 2: cotton and viscose
QB/T 1266 Fur - Physical and mechanical tests - Sample preparation and conditioning
3 Terms and definitions
No terms and definitions are listed in this document.
4 Principle
Moisten the fur duvet specimen and the standard cotton adjacent fabrics with artificial sweat fully, closely laminate them to make a composite specimen, place it in the color fastness to perspiration tester, and kept it under the specified weight at the specified temperature for a specified period of time. Dry the specimen and the standard cotton adjacent fabrics, evaluate the discoloration of the fur duvet specimen and the staining of the standard cotton adjacent fabrics by using gray scales respectively.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus and materials
6 Sampling and preparation of specimens
7 Test steps
8 Evaluation of results
9 Evaluation error
10 Test report
