HG/T 3689-2014Test method of discoloration for footwear (English PDF)
Also coversHGT3689-2014
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Issued by
Ministry of Industry and Information Technology of PRC
Level / Type
National · Recommended
Issue date
May 12, 2014
Implementation date
October 1, 2014
Scope
HG/T 3689-2014 (Test method of discoloration for footwear) is available as an English-translated PDF.
HG/T 3689-2014 is the Chinese standard "Test method of discoloration for footwear". Its scope clause reads: This Standard specifies the test method for the degree of yellowing resistance of the upper and sole of the shoes and other products against the sunlight and ultraviolet light.
This Standard specifies two test methods A and B. Method-A is the solar lamp method and Method-B is ultraviolet lamp tube method. This Standard is applicable to test the materials used for white and light-colored shoes.
Its clauses include principle; sample preparation; test conditions; test procedures. It was issued by the Ministry of Industry and Information Technology of PRC on 2014-05-12 and took effect on 2014-10-01.
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Document preview — HG/T 3689-2014
National Standard of the People's Republic of China
- ICS
- 61.060
- Classification
- Y 78
Issued by: Ministry of Industry and Information Technology of PRC
Contents
- Foreword...3
- 1 Scope...4
- 2 Normative References...4
- 3 Principle...4
- 4 Test Device...5
- 5 Sample Preparation...6
- 6 Test Conditions...6
- 7 Test Procedures...6
- 8 Test Results...7
- 9 Test Report...7
1 Scope
This Standard specifies the test method for the degree of yellowing resistance of the upper and sole of the shoes and other products against the sunlight and ultraviolet light.
This Standard specifies two test methods A and B. Method-A is the solar lamp method and Method-B is ultraviolet lamp tube method.
This Standard is applicable to test the materials used for white and light-colored shoes.
2 Normative References
The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this document.
GB/T 250-2008 Textiles - Tests for Color Fastness - Grey Scale for Assessing
Change in Color
3 Principle
3.1 Method-A: solar lamp method
According to the phenomenon that the white or light-colored products are prone to yellowing under the long-term exposure to the natural sunlight, under the condition with solar lamp and heating temperature control device simulating the natural environment, observe the change of the color on the sample surface within a predetermined time; confirm the degree of the sample discoloration; so that judge the material’s yellowing resistance under solar radiation.
3.2 Method-B: ultraviolet lamp tube method
According to the phenomenon that the white or light-colored products are prone to yellowing under the long-term exposure to the ultraviolet light, the sample is irradiated with ultraviolet rays, observe the color change on the surface of the sample within the
4.3 Gray scale
It shall meet the requirements of GB/T 250-2008.
4.4 Standard light source box
The light source in the standard light source box shall use D65 light source.
5 Sample Preparation
5.1 Shape and specification of the sample: cut 2 samples with size no less than
30mm×10mm per group; one sample is sent to the test chamber for the yellowing resistance test; the other sample is placed outside the chamber for the assessment of the test results.
5.2 The shape and specification of the special sample can be determined by the actual situation.
5.3 The sample quantity shall be determined according to the number of test items;
the effective samples for each test item shall be no less than 3 groups.
6 Test Conditions
6.1 Method-A
6.1.1 The temperature inside the test chamber is specified to be 50°C±2°C.
6.1.2 The sample surface shall be parallel to the bottom surface of the bulb, the distance between two which is 250mm±2mm.
6.2 Method-B
The sample surface shall be parallel to the bottom surface of the lamp tube, the distance between two which is 250mm±2mm.
7 Test Procedures
7.1 Method-A
7.1.1 Sample installation
Place the sample on the tray at the position between the two concentric circles of
75mm and 300mm diameters. The illuminated surface of the sample faces the light
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 7 pages — is available in the English PDF.
Referenced standards
Normative references
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