GB/T 38465-2020 PDF EnglishUS$125.00 · In stock · Download in 9 seconds
GB/T 38465-2020: Test Method of Artificial Leather and Synthetic Leather - Determination of Cold Resistance Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB/T 38465-2020: Test Method of Artificial Leather and Synthetic Leather - Determination of Cold Resistance---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT38465-2020 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 59.080.40 Y 47 Test Method of Artificial Leather and Synthetic Leather - Determination of Cold Resistance ISSUED ON: MARCH 6, 2020 IMPLEMENTED ON: OCTOBER 1, 2020 Issued by: State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of ContentsForeword ... 3 1 Scope ... 4 2 Normative References ... 4 3 Principle ... 4 4 Sample Preparation ... 4 5 Test Methods ... 5 6 Test Report ... 13 Test Method of Artificial Leather and Synthetic Leather - Determination of Cold Resistance1 ScopeThis 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 ReferencesThe 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 Testing3 PrincipleAt 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 Preparation4.1 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 Methods5.1 Method A 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. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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