1 Scope
This part of GB/T 11039 specifies a method for determining the colour fastness of textiles of all kinds in ozone in the atmosphere, both at ambient room temperatures with relative humidities not exceeding 65 % and at elevated temperatures with relative humidities above 80 %.
NOTE 1 If a sample shows sensitivity to this test, it shall also be tested for sensitivity to the tests specified in GB/T 11039.1 (colour fastness to nitrogen oxides) and GB/T 11039.2 (colour fastness to burnt-gas fumes).
2 Normative References
The following standards contain provisions which, through reference in this part of GB/T 11039, constitute provisions of this standard. At time of publication, the editions indicated were valid. All the standards will be modified, however, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below.
GB 250 Gray scale for assessing change in colour (GB 250-1995, idt ISO 105-A02: 1993)
GB/T 6151 Textiles-Tests for colour fastness-general principle of testing (GB/T 6151-1997, eqv ISO 105-A01: 1994)
GB 7565 Textiles-Tests for colour fastness - Specification for standard adjacent fabric-cotton and viscose (GB 7565 – 1987, eqv ISO 105-F02: 1985)
3 Principle
3.1 A specimen and a swatch of test-control fabric are simultaneously exposed to ozone, in an atmosphere at ambient room temperature and a relative humidity not exceeding 65 %, until the test control shows a colour change corresponding to that of a standard of fading. This exposure period constitutes one cycle. The cycles are repeated until the specimen shows a definite colour change or for a prescribed number of cycles.
Foreword I
1 Scope
2 Normative References
3 Principle
4 Apparatus and Materials
5 Test Specimens
6 Procedure
7 Test Report
Annex A (normative) Ozone Exposure Chambers
Annex B (informative) Test-control Fabrics and Standards of Fading
