GB/T 44507-2024Test method of leatherette - Determination and evaluation of surface scratch (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part

1.Structure and drafting rules for standardization documents" Drafting. Please note that the content of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by China Light Industry Federation. This document is under the jurisdiction of the National Technical Committee for Standardization of Plastic Products (SAC/TC48). This document was drafted by: Suzhou Ruigao New Materials Co., Ltd., Changhong Meiling Co., Ltd., Hefei Ketian Waterborne Technology Co., Ltd. Responsible Company, Ma'anshan Ruigao Technology Co., Ltd., Kunshan Achilles New Materials Technology Co., Ltd., Zhejiang Meisheng New Materials Co., Ltd., Shanghai Hai Automobile Group Co., Ltd. Passenger Vehicle Branch, Zhejiang Hexin New Materials Co., Ltd., Kunshan Beice Testing Technology Co., Ltd., Beijing CHJ Information Technology Co., Ltd., Shanghai Weilai Automobile Co., Ltd., Lishui Quality Inspection and Testing Institute, Shandong Tongda Haidao New Materials Co., Ltd., Zhejiang Luoxing Chemical Co., Ltd., Tenshou (Fujian) Microfiber Technology Co., Ltd., Hubei Qili Polymer Materials Co., Ltd. Co., Ltd., Anhui Amway Materials Technology Co., Ltd., Foshan Weisda New Materials Co., Ltd., Chongqing Shuangxiang Microfiber Materials Co., Ltd., Fujian Huaxia Synthetic Leather Co., Ltd., Nantong Deyi New Materials Co., Ltd., Suzhou Best Decoration New Materials Co., Ltd., Zhejiang Jiake New Materials Material Technology Co., Ltd., Dongguan Hebiao Technology Co., Ltd., and Shanghai Dingzhen Testing Technology Co., Ltd. The main drafters of this document are. Gao Jingang, Yang Hao, Fan Xuefu, Sun Fengyun, Zhang Tao, Zhu Youkui, Zhao Jianming, Qian Neng, Yin Jianwei, Lan Bi, Wu Yuan, Xu Yiyan, Wang Weixin, Ben Xianli, Xu Xiaofeng, Ji Yijie, Ying Yueyue, Xu Xuri, Yao Dusheng, Zhou Wenzhi, Liu Aiming, Jia Yisong, Hong Aijun, Yang Wentao, Li Hualin, Chen Qiaojian, Sun Bin, Zheng Sixian, Qu Xinghe, Wei Guo. Test methods for artificial leather and synthetic leather Determination and evaluation of surface scratch resistance

1 Scope

GB/T 44507-2024 gives the Chinese method for determining and evaluating the surface scratch resistance of artificial and synthetic leather. Scratch resistance is what separates a synthetic leather that still looks acceptable after a year in a car seat, a sofa or a handbag from one that does not, and it is the property customers complain about most; but a scratch is a visual defect as much as a mechanical one, so a method has to define both how the surface is marked and how the mark is judged. The standard sets the principle, the apparatus and the scratching stylus with its geometry and load, the specimen and its conditioning, the scratching procedure with the defined load, speed and pattern, and then the evaluation: the visual assessment against a grey scale or a rating scale under specified lighting and viewing geometry, the instrumental measurement of the gloss and colour change where used, the reporting of the grade and the load at which damage first appears. It takes effect on 1 April 2025.

This document describes the scratch resistance test of artificial leather and synthetic leather using the metal finger scratch method (Method A), the paper clip scratch method (Method B) and the rotary scratch method. The principle of the rubbing method (C method), test instruments, specimens, test procedures, evaluation of test results, expression of results and test report. This document is applicable to the determination and evaluation of the scratch resistance of artificial leather, synthetic leather and their products.

2 Normative references

The contents of the following documents constitute essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document.

GB/T 2918 Standard environment for conditioning and testing of plastic specimens QB/T 1149-2011 Paper clips QB/T 2726-2005 Physical and mechanical tests on leather - Determination of wear resistance

3 Terms and definitions

There are no terms or definitions that require definition in this document.