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GB/T 44535-2024: Plastics - Determination of linear dimensions of test specimens
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GB/T 44535-2024: Plastics - Determination of linear dimensions of test specimens

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Plastics - Determination of linear dimensions of test specimens Determination of linear dimensions of plastic specimens (ISO 16012.2015, MOD) ICS 83.080.01 CCS G31 National Standard of the People's Republic of China Released on 2024-09-29 2025-04-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

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 is required. This document is modified to adopt ISO 16012.2015 "Determination of linear dimensions of plastic test specimens". Compared with ISO 16012.2015, this document has the following structural adjustments. 4.6 and 5.3 correspond to 5.4 of ISO 16012.2015; a) 5.4 corresponds to 5.3 of ISO 16012.2015; b) 5.5 corresponds to the same content of 5.5 and 5.6 in ISO 16012.2015; c) 5.6 corresponds to 5.5 in ISO 16012.2015; d) 5.7 corresponds to 5.6 in ISO 16012.2015; e) 5.8 corresponds to 5.7 in ISO 16012.2015; f) 5.9 corresponds to 5.8 in ISO 16012.2015.g) The technical differences between this document and ISO 16012.2015 and their reasons are as follows. ISO 3611 (see 4.2) was replaced by the normative reference GB/T 1216 to adapt to my country's technical conditions and increase operability; a) The normative reference GB/T 21389 replaced ISO 13385﹘1 (see 4.3) to adapt to my country's technical conditions and increase operability. Sexuality; b) The normative reference GB/T 18761 replaced ISO 13102 (see 4.4.1) to adapt to my country's technical conditions and increase operability. Sexuality; c) The description of the scope of applicable samples in 5.1 of ISO 16012.2015 has been deleted to reduce duplication of content; d) ISO 291 (see 5.1) was replaced with the normative reference GB/T 2918 to adapt to my country's technical conditions and increase operability; e) Change the applicability of the vernier caliper in Table 1 from "Not usable" to "Not recommended" (see 5.1) to meet the actual usage conditions; f) ISO 3650 (see 5.3) was replaced by the normative reference GB/T 6093 to adapt to my country's technical conditions and increase operability; g) Added the normative reference GB/T 8170 (see 5.4) to improve the operability of calculation and eliminate ambiguity; h) Change some descriptions in 5.8 into notes to make the standard text coherent and easier to understand and use. i) The following editorial changes were made to this document. The informative reference GB/T 37426-2019 replaces ISO 20753.2018 (see Chapter 1); a) The informative reference GB/T 2941-2006 replaces ISO 23529.2010 (see Chapter 1); b) The informative reference GB/T 17037.1-2019 replaces ISO 294﹘1.1996/Amd.2.2005 (see Appendix B Note); c) Add a note to 5.1 to facilitate the understanding and use of the standard text; d) Examples are added in 5.8 to facilitate the understanding and use of the standard text. e) Please note that some of the contents 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 the China Petroleum and Chemical Industry Federation. This document is under the jurisdiction of the General Methods and Products Branch of the National Plastics Standardization Technical Committee (SAC/TC 15). This document was drafted by. China Bluestar Chengdu Testing Technology Co., Ltd., Sinochem Quanzhou Energy Technology Co., Ltd., and Guogao Materials High-resolution Technology Co., Ltd. Electronic Materials Industry Innovation Center Co., Ltd., Guangzhou Synthetic Materials Research Institute Co., Ltd., Xiamen Keli Electronics Co., Ltd., Luxi Chemical Group Group Co., Ltd., Beijing Jihaichuan Technology Development Co., Ltd., Shandong Dawn Polymer Materials Co., Ltd., Jiangyin Zhongda Soft Plastics Co., Ltd. Materials Co., Ltd., Shanghai Lelai Automotive Analysis and Testing Co., Ltd., Suzhou Xuguang Polymer Co., Ltd., Beijing Huasu Chenguang Technology Co., Ltd. Co., Ltd., Sinopec (Beijing) Chemical Research Institute Co., Ltd., Liaocheng University, Qingdao Product Quality Inspection Institute, Guangdong Yuhao New Materials Technology Co., Ltd., Beijing Yanshan Petrochemical High-tech Technology Co., Ltd., China National Petroleum Corporation Lanzhou Chemical Research Institute Research Center, Xinjiang Turpan Natural Environment Experimental Research Center, Guangzhou Quality Supervision and Inspection Institute, Hebei Zetian Water Saving Technology Co., Ltd., Tangshan Changhong Plastic Products Co., Ltd., Shanghai Best Pipe Co., Ltd., Nantong Ino Precision Plastic Pipe Co., Ltd., Suzhou Tianyu Plastic Glue Co., Ltd., Shandong Xianglong New Materials Co., Ltd. The main drafters of this document are. Zhang Minzheng, Gao Dujuan, Wu Bo, Liu Xiaodan, Li Junxu, Zhang Yanjun, Jiao Fengming, Zhao Lei, Wang Mingzhen, Li Xia, Wang Haili, Chen Hongyuan, Liu Zhangshuo, Teng Mouyong, Wang Xiaobin, Hu Changxin, Wang Erlong, Ji Zhuang, Cao Chen, Zheng Wen, Zhang Yaoyue, Fan Jie, Guo Chunyun, Ye Yuanjian, Yuan Sen, Qin Xiaopeng, Shang Lei, Shang Wei, Qian Xiaoren, Ji Wenguang, Li Yetian, Chen Dong, Zhang Shuai. Determination of linear dimensions of plastic specimens

1 Scope

This document specifies the measuring instruments, procedures, and reporting for the determination of linear dimensions of rigid plastic specimens. This document applies to the specimens specified in GB/T 37426-2019 and/or other specimens with a thickness ranging from 0.4 mm to 6.4 mm. Sample. Note. For the measurement of specimen dimensions of semi-hard materials (70 MPa ≤ E ≤ 700 MPa), see Chapter 7 of GB/T 2941-2006.

2 Normative references

The contents of the following documents constitute the 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. in this document. GB/T 1216 Outside Micrometer GB/T 2918 Standard environment for conditioning and testing of plastic specimens (GB/T 2918-2018, ISO 291.2008, MOD) GB/T 6093 Geometrical Specifications (GPS) Length Standard Gauge Blocks (GB/T 6093-2001, ISO 3650.1998, MOD) GB/T 8170 Rules for rounding off values and expression and determination of limit values GB/T 18761 Electronic digital indicator GB/T 21389 Vernier, dial and digital calipers GB/T 39543 Design and metrological characteristics of lever dial indicators (GB/T 39543-2020, ISO 9493.2010, IDT) GB/T 39547 Design and metrological characteristics of mechanical indicating meters (GB/T 39547-2020, ISO 463.2006, IDT)

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Linear dimension The shortest distance between any two points selected on a plastic specimen. 3.2 Thickness Ideally, the smaller side dimension of the rectangular cross section perpendicular to the longitudinal direction of the strip specimen. 3.3 Width Ideally, the larger side dimension of the rectangular cross section perpendicular to the longitudinal direction of the strip specimen. 3.4 length The dimension between two parallel cross sections perpendicular to the longitudinal direction of the strip specimen. ...