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GB/T 41006-2021 English PDF (GBT41006-2021)

GB/T 41006-2021 English PDF (GBT41006-2021)

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GB/T 41006-2021: General technical requirements for polyurethane synthetic leather used for vehicle

This Standard specifies general technical requirements, test methods and inspection rules for polyurethane synthetic leather used for vehicle. This Standard is applicable to polyurethane synthetic leather for vehicle made of cloth base, polyurethane resin as the main raw materials, through wet or dry polyurethane coating and post-processing.
GB/T 41006-2021
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 59.080.40
CCS Y 47
General technical requirements for polyurethane synthetic
leather used for vehicle
ISSUED ON: DECEMBER 31, 2021
IMPLEMENTED ON: JULY 01, 2022
Issued by: State Administration for Market Regulation;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions... 5
4 Technical requirements ... 5
5 Test methods ... 6
6 Inspection rules ... 9
Annex A (normative) List of aromatic amines not allowed to decompose in dyes under reducing conditions ... 10
General technical requirements for polyurethane synthetic
leather used for vehicle
1 Scope
This Standard specifies general technical requirements, test methods and inspection rules for polyurethane synthetic leather used for vehicle.
This Standard is applicable to polyurethane synthetic leather for vehicle made of cloth base, polyurethane resin as the main raw materials, through wet or dry polyurethane coating and post-processing.
2 Normative references
The following referenced documents are indispensable for the application 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 250-2008, Textiles - Tests for colour fastness - Grey scale for assessing change in colour
GB/T 2912.1-2009, Textiles - Determination of formaldehyde - Part 1: Free and hydrolyzed formaldehyde (water extraction method)
GB/T 2918-2018, Plastics - Standard atmospheres for conditioning and testing GB 8410, Flammability of automotive interior materials
GB/T 16578.1-2008, Plastics - Film and sheeting - Determination of tear resistance - Part 1: Trouser tear method
GB/T 19942-2019, Leather and fur - Chemical tests - Determination of banned azo colourants
GB/T 38465-2020, Test method of artificial leather and synthetic leather - Determination of cold resistance
GB/T 38612-2020, Test method of artificial leather and synthetic leather - Determination of tensile load and elongation at break
QB/T 2537-2001, Leather - Tests for colour fastness - Colour fastness to cycles of to-and-fro rubbing
QB/T 2714-2018, Leather - Physical and mechanical tests - Determination of flex resistance
QB/T 2726-2005, Leather - Physical and mechanical tests - Determination of abrasion resistance
QB/T 4043-2010, Polyvinyl chloride artificial leather for automotive
QB/T 4671-2014, Test Method for Synthetic Leather/Artificial Leather - Resistance to Hydrolysis
QB/T 4873-2015, Test methods of artificial leather and synthetic leather - Exposure to laboratory light sources
QB/T 5068-2017, Test method of artificial leather and synthetic leather - Test of fogging
QB/T 5157-2017, Test method of artificial leather and synthetic leather - Test of color migration
QB/T 5354-2018, Test method of artificial leather and synthetic leather - Determination of volatile organic compounds
QB/T 5447-2019, Test method of artificial leather and synthetic leather - Determination of odor
QC/T 941-2013, Test Method for Mercury in Automobile Materials
QC/T 942-2013, Test Method for Hexavalent Chromium in Automobile Materials QC/T 943-2013, Test Method for Lead and Cadmium in Automobile Materials QC/T 944-2013, Test Method for Poly-Brominated Biphenyls (PBBs) and Poly - Brominated Diphenyl Ethers (PBDEs) in Automobile Materials
3 Terms and definitions
There are no terms and definitions that need to be defined in this Standard. 4 Technical requirements
The physical and chemical properties shall meet the requirements of Table 1. Carry out the test according to the provisions of method A in GB/T 38465-2020. 5.9 Chemical resistance
Carry out according to the provisions of 6.29 in QB/T 4043-2010.
5.10 Lightfastness
Carry out the test according to the provisions of test method A in QB/T 4873-2015. Select A2 for the test conditions.
5.11 Heat aging resistance
Carry out according to the provisions of 6.24 in QB/T 4043-2010. The oven temperature is 100?????2???. Test time is 168h. After the test, take out the specimen and make the following judgments:
Observe the surface change of the specimen. According to the provisions of GB/T 250- 2008, visually determine the level of discoloration and fading under a standard light source. Take the most severe surface discoloration as the test result.
5.12 Surface color migration
Carry out the test according to the provisions of method A in QB/T 5157-2017. 5.13 Color fastness to rubbing
Carry out the test according to the provisions of QB/T 2537-2001.
5.14 Flame retardancy
Test according to the provisions of GB 8410.
5.15 Atomization value
Carry out the test according to the provisions of method B in QB/T 5068-2017. 5.16 Odor
Carry out the test according to the provisions of condition 4 in Table 1 of QB/T 5447- 2019.
5.17 Free and hydrolyzed formaldehyde
Carry out the test according to the provisions of GB/T 2912.1-2009.
5.18 Decomposable aromatic amine dyes
Carry out the test according to GB/T 19942-2019.
5.19 Heavy metal
5.19.1 Hexavalent chromium
Carry out the test according to the provisions of QC/T 942-2013.
5.19.2 Lead
Carry out the test according to the provisions of QC/T 943-2013.
5.19.3 Cadmium
Carry out the test according to the provisions of QC/T 943-2013.
5.19.4 HG
Carry out the test according to the provisions of QC/T 941-2013.
5.20 Polybrominated biphenyls and polybrominated diphenyl ethers
Carry out the test according to the provisions of QC/T 944-2013.
5.21 Volatile organic compounds
Carry out the test according to the provisions of QB/T 5354-2018.
6 Inspection rules
6.1 Batch
Products are accepted in batches. Products that are continuously produced with the same raw material, the same formula, the same category, the same specification, and the same process are a batch. The quantity of each batch shall not exceed 500 rolls. 6.2 Sampling method
Randomly select 1 sample from each batch.
6.3 Determination rules
If there are failed items in the inspection results, double samples shall be taken from the batch to reinspect the failed items. If it still fails, the batch is rejected.

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