GB/T 38465-2020Test method of artificial leather and synthetic leather—Determination of cold resistance (English PDF)
人造革合成革试验方法 耐寒性的测定
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
March 6, 2020
Implementation date
October 1, 2020
Scope
GB/T 38465-2020 is the English-translated version of 人造革合成革试验方法 耐寒性的测定.
GB/T 38465-2020 is the Chinese standard "Test Method of Artificial Leather and Synthetic Leather - Determination of Cold Resistance".
Its scope clause reads: This Standard specifies the principle, sample preparation, test methods (Method A, Method B and Method C) and test report of the determination of cold resistance of artificial leather, synthetic leather and its manufactured products.
This Standard is applicable to the determination of cold resistance of artificial leather, synthetic leather and its manufactured products. Its clauses include principle; sample preparation; test methods; test report.
It was issued by the State Administration for Market Regulation on MARCH 6, 2020 and took effect on OCTOBER 1, 2020.
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Document preview — GB/T 38465-2020
National Standard of the People's Republic of China
- ICS
- 59.080.40
- Classification
- Y 47
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword3
- 1 Scope4
- 2 Normative References4
- 3 Principle4
- 4 Sample Preparation4
- 5 Test Methods5
- 6 Test Report13
1 Scope
This Standard specifies the principle, sample preparation, test methods (Method A, Method B and Method C) and test report of the determination of cold resistance of artificial leather, synthetic leather and its manufactured products.
This Standard is applicable to the determination of cold resistance of artificial leather, synthetic leather and its manufactured products.
2 Normative References
The following documents are indispensable to the application of this document. In terms of references with a specified date, only versions with a specified date are applicable to this document. In terms of references without a specified date, the latest version (including all the modifications) is applicable to this document.
GB/T 2918-2018 Plastics - Standard Atmospheres for Conditioning and Testing
3 Principle
At a lot temperature, use a load of certain energy and speed to impact the compressed sample, so as to determine whether it meets the requirements for use at low temperature.
4 Sample Preparation
4.1 Requirements
The surface of the samples shall be free of detects that would affect material properties and case deviations in the determination. The samples shall be evenly distributed and cut within the breadth range of the whole product. The number of samples: Method A: respectively take three samples in each horizontal and longitudinal direction; Method B and Method C: respectively take three samples.
4.2 Conditioning
In accordance with the requirements of GB/T 2918-2018, at a temperature of (23 ± 2) °C and a relative humidity of (50 ± 10) %, conduct sample conditioning for not less than 24 h.
5 Test Methods
5.1 Method
5.1.1 Sample size
Sample size: length: (60 ± 1) mm; width: (20 ± 1) mm.
5.1.2 Test equipment
Low-temperature impact test device (see Figure 1) shall satisfy the following requirements:
a) The mass of hammer: (2,500 ± 10) g; the impact height of hammer (50 ± 1) mm;
b) Maintain the bottom surface of the hammer head parallel to the surface of the impact platform;
c) Parts (including Part 7, Part 8 and Part 9 in Figure 1) of the sample clamping device can be detached;
d) The constant-temperature precision of the low-temperature bath satisfies ± 1 °C; the low-temperature limit satisfies the operating requirement of -30 °C. […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Normative references
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