GB/T 41936.1-2022 English PDFUS$184.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 41936.1-2022: Plastics - Determination of stiffness in torsion of flexible materials - Part 1: General method Status: Valid
Basic dataStandard ID: GB/T 41936.1-2022 (GB/T41936.1-2022)Description (Translated English): Plastics - Determination of stiffness in torsion of flexible materials - Part 1: General method Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: G31 Classification of International Standard: 83.080.01 Word Count Estimation: 10,194 Date of Issue: 2022-12-30 Date of Implementation: 2023-04-01 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 41936.1-2022: Plastics - Determination of stiffness in torsion of flexible materials - Part 1: General method---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. ICS 83.080.01 CCSG31 National Standards of People's Republic of China Determination of torsional stiffness of plastic flexible materials Part 1.General method Part 1.General method (ISO 458-1.1985, IDT) Posted on 2022-12-30 2023-04-01 Implementation State Administration for Market Regulation Released by the National Standardization Management Committee forewordThis 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. This document is part 1 of GB/T 41936 "Determination of Torsional Rigidity of Plastic Flexible Materials". GB/T 41936 has been issued The following sections. --- Part 1.General method; --- Part 2.Plasticized vinyl chloride homopolymers and copolymers. This document identically adopts ISO 458-1.1985 "Determination of torsional rigidity of plastic flexible materials - Part 1.General method". A chapter "Terms and Definitions" has been added to this document. Please note that some contents of this document may refer to patents. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed by China Petroleum and Chemical Industry Federation. This document is under the jurisdiction of the National Plastics Standardization Technical Committee (SAC/TC15). This document was drafted by. Zhonglan Chenguang Chengdu Testing Technology Co., Ltd., Guangzhou Institute of Quality Supervision and Testing, SAIC-GM-Wuling Motors Co., Ltd., Xiamen Topola Material Technology Co., Ltd., Fredes (Foshan) Information Technology Co., Ltd., Jinguan (Longhai) Plastic Bag Packaging Co., Ltd., Dongguan Shanpu Industrial Co., Ltd., Jilin Province Product Quality Supervision and Inspection Institute, Shaoxing Xiangyu Green Packaging Co., Ltd., Hefei Hai Special Microwave Technology Co., Ltd. The main drafters of this document. Zhang Yanjun, Yu Qiaoling, Lan Xian, Wu Yuansheng, Li Hui, Liu Yuchun, Nian Kai, Zhang Yaojia, Li Shangyu, Yang Jun, Sun Wenxun, Yang Guosheng.IntroductionPlastic flexible materials will be subjected to different degrees of torsional force in some application scenarios, and torsional stiffness is an important property in material mechanics. It is very important to use reasonable testing methods. Since there is no relevant test method standard for plastic materials in my country, GB/T 41936 "Measurement of torsional stiffness of plastic flexible materials" was formulated. Certainly". Due to the wide variety of plastic materials, the properties of different types of plastic materials are quite different, and the application scenarios are complex. According to the torsional stiffness test method The applicability of the method in the field of different plastic materials, GB/T 41936 consists of two parts. --- Part 1.General method. The purpose is to provide a general method for the determination of the torsional stiffness of flexible plastics, and the torsional Relevant requirements for stiffness test equipment. --- Part 2.Plasticized vinyl chloride homopolymers and copolymers. The purpose is to provide plasticized vinyl chloride homopolymer and copolymer materials Rotational stiffness provides a test method. Determination of torsional stiffness of plastic flexible materials Part 1.General method1 ScopeThis document specifies a general method for the determination of the torsional stiffness of flexible plastics at different temperatures. This document is suitable for tests at a single temperature or with different temperature gradients selected according to material properties, especially for temperatures below 0°C test. 1)2 Normative referencesThe contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document. testing) Note. GB/T 2918-2018 Standard environment for conditioning and testing of plastic specimens (ISO 291.2008, MOD)3 Terms and DefinitionsThis document does not have terms and definitions that need to be defined.4 principlesAt any fixed loading time, observe the torque and deflection angle of the material under test. Note 1.Due to the nonlinear characteristics and creep properties of plastics, it may be necessary to fix the duration of the load and limit the deflection angle during the test. Note 2.The torsional stiffness values obtained from tests using the same thickness, span and deflection angle are comparable.5 devices5.1 The torsional stiffness testing machine can apply enough torque to deflect the sample with a distance between the clamps of 35mm~55mm. device display The intent is shown in Figure 1. 5.2 Load, different torques can be adjusted according to the stiffness and span of the sample. Periodic calibration is recommended to ensure that any given mass, torque The accuracy of the actual torque applied by the torque pulley and bearing combination. Note. During the low temperature test, heat the bearings of the equipment to prevent the equipment from freezing. 5.3 Suitably sized insulation or heat chamber. 5.4 Thermometer, accurate to 1°C. The temperature measuring structure of the thermometer should be placed close to the sample. 5.5 Timer, accurate to 0.1s. 1) See ISO 458-2 for the application of the method for plasticized vinyl chloride polymers and copolymers. Determination of other materials will be described in other parts of ISO 458. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 41936.1-2022_English be delivered?Answer: Upon your order, we will start to translate GB/T 41936.1-2022_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 41936.1-2022_English with my colleagues?Answer: Yes. 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