GB/T 24282-2021 English PDFUS$329.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 24282-2021: Plastics - Determination of xylene-soluble matter fraction in polypropylene Status: Valid GB/T 24282: Historical versions
Basic dataStandard ID: GB/T 24282-2021 (GB/T24282-2021)Description (Translated English): Plastics - Determination of xylene-soluble matter fraction in polypropylene Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: G31 Word Count Estimation: 17,150 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 24282-2021: Plastics - Determination of xylene-soluble matter fraction in polypropylene---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.Plastics -- Determination of xylene-soluble matter fraction in polypropylene ICS 83:080:01 CCSG31 National Standards of People's Republic of China Replacing GB/T 24282-2009 Determination of Xylene Soluble Content in Plastic Polypropylene (ISO 16152:2005, Plastics-Determinationofxylene-solublematterin Published on 2021-12-31 2022-07-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration directory Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Method A: Chemical Method 1 4:1 Principle 1 4:2 Equipment 1 4:3 Reagents and Materials 2 4:4 Test Step 2 4:5 Result calculation and representation 5 4:6 Precision5 5 Method B: Infrared Spectroscopy 5 5:1 Principle 5 5:2 Instruments 5 5:3 Reagents and Materials 6 5:4 Test Step 6 5:5 Result calculation and representation 7 5:6 Precision8 6 Method C: Low Resolution Pulsed NMR Method 8 6:1 Principle 8 6:2 Equipment 8 6:3 Test Step 8 6:4 Result representation 9 6:5 Precision9 7 Test report 9 Appendix A (informative) Comparison of this document with ISO 16152:2005 structure number 11 Appendix B (Informative) Precision Data Statistical Results 12 Reference 13 forewordThis document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" drafted: This document replaces GB/T 24282-2009 "Determination of Xylene Soluble Content in Plastic Polypropylene", and GB/T 24282- Compared with:2009, except for structural adjustment and editorial changes, the main technical changes are as follows: a) Added "infrared spectroscopy" and "low-resolution pulsed nuclear magnetic resonance method" (see Chapter 1, Chapter 1 of the:2009 edition); b) Removed the pipette with a specification of:200mL (see 4:6 of the:2009 edition); c) Added specifications for funnels, vacuum drying ovens, controllable heating pans, dryers and ovens (see 4:2:10, 4:2:11, 4:2:13, 4:2:15 and 4:2:17, 4:11, 4:12, 4:14, 4:16 and 4:18 of the:2009 edition); d) Change the content of "Note" to the text "If a heating plate is used for heating, the set temperature should be about 30°C higher than the boiling point of xylene" (see 4:4:3:7, 6:3:7 of the:2009 edition); e) Added the normative reference document GB/T 8170 (see 4:5:3, 7:3 of the:2009 edition); f) increased the precision of method A (see Chapter 8 of 4:6,:2009 edition); g) Added Method B "Infrared Spectroscopy" (see Chapter 5); h) Method C "Low Resolution Pulsed Nuclear Magnetic Resonance Method" was added (see Chapter 6): This document is revised and adopted ISO 16152:2005 "Determination of Xylene-Soluble Content in Plastic Polypropylene": Compared with ISO 16152:2005, this document has many adjustments in structure: Appendix A lists this document and ISO 16152:2005: The structure number comparison list of : The technical differences between this document and ISO 16152:2005 and their reasons are as follows: a) Deleted the content related to the test steps, and added the description of the main content of the document (see Chapter 1) to meet the requirements of GB/T 1:1 Require; b) The principle of Method A (see 4:1) is added, and the contents of 1:2 and 1:3 of ISO 16152:2005 are improved to make the description of the principle More complete to meet the requirements of GB/T 1:1; c) Changed the volume of the flask from 400mL to 500mL (see 4:4:2) to conform to my country's national conditions; d) The pipette with a specification of:200mL is deleted to meet the requirements of Chinese standards; e) The brand and model of filter paper are deleted to meet the requirements of Chinese standards; f) Added specifications for vacuum drying ovens, controllable heating pans, dryers and ovens (see 4:2:11, 4:2:13, 4:2:15 and 4:2:17), to facilitate the application of this document; g) Changed the "Note" containing requirements or recommendations to the main text (see 4:4:3:1, 4:4:3:3, 4:4:3:7 and 4:4:3:11), in line with GB/T 1:1 requirements; h) The unit of nitrogen flow rate was changed to "should be about 35mL/min" (see 4:4:3:6) to increase operability; i) Added the normative reference document GB/T 8170 (see 4:5:3) to improve the operability of the method and eliminate ambiguity; j) increased the precision of Method A (see 4:6) to improve the applicability of the standard; k) Added Method B "Infrared Spectroscopy" (see Chapter 5) to better meet the testing needs; l) Method C "low-resolution pulsed nuclear magnetic resonance method" (see Chapter 6) was added to better meet the testing needs; m) The method, apparatus and test conditions used, any circumstances that may affect the results are added to the test report [see Section 7 Chapter a), c), g)] to make the report more comprehensive: Compared with ISO 16152:2005, this document has the following editorial changes: --- Changed the symbols of three magnitudes from Ss, Sc and Sm to ws, wc and wm (see 3:1 and 4:5:2); --- Delete the note (see the note to 5:3 of ISO 16152:2005); --- Added Appendix A (informative) "Comparison of this document with the structure number of ISO 16152:2005"; --- Added Appendix B (informative) "Statistical Results of Precision Data": Please note that some content of this document may be patented: 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 is drafted by: Beijing Yanshan Petrochemical High Technology Co:, Ltd:, National Energy Group Ningxia Coal Industry Co:, Ltd:, Beijing Yiluda Electromechanical Equipment Co:, Ltd:, Shaanxi Yanchang China Coal Yulin Energy Chemical Co:, Ltd:, China Petrochemical Corporation Beijing Chemical Research Institute, Petrochemical Research Institute of China National Petroleum Corporation, Donghua Energy (Ningbo) New Materials Co:, Ltd:, Zhejiang Stone Petrochemical Co:, Ltd:, China Petrochemical Corporation Yangzi Petrochemical Branch: The main drafters of this document: Wang Lingxiao, Lv Zhengzhong, Shi Qingjun, Zheng Huiqin, Wang Huineng, Zhang Xiaomeng, Wang Li, Cui Yinxin, Zhang Lu, Chai Zibin, Zhu Jianhui, Pei Yanhong, Wang Hongying, Hu Xuexing: This document was first published in:2009 and this is the first revision: Determination of Xylene Soluble Content in Plastic Polypropylene1 ScopeThis document specifies three methods for determining the soluble content of polypropylene homopolymers or copolymers in xylene at 25°C: --- Method A: chemical method; --- Method B: Infrared Spectroscopy; --- Method C: low-resolution pulsed nuclear magnetic resonance method: Method A is the benchmark method used for the calibration of Method B and Method C: This document applies to the determination of the soluble content of polypropylene homopolymers or copolymers in xylene at 25°C: Additives soluble in xylene Additives and other materials can affect the determination of xylene soluble content:2 Normative referencesThe contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document: GB/T 8170 Numerical Rounding Rules and Representation and Judgment of Limit Values3 Terms and DefinitionsThe following terms and definitions apply to this document: 3:1 xylene-solublefraction ws The polymer is dissolved in xylene at reflux temperature, and after the solution is cooled to 25 °C and kept for a certain period of time, the substances that are not precipitated in the solution quality score: 4 Method A: Chemical Method 4:1 Principle The polypropylene samples were weighed after drying and dissolved in xylene under reflux: The solution was then cooled to 25°C under specified conditions and kept constant temperature to ensure adequate crystallization of polypropylene under these conditions: The mixed solution was then filtered to obtain a transparent filtrate: Evaporate off the filtrate Toluene to obtain xylene solubles and calculate their content: 4:2 Instruments and equipment 4:2:1 Reflux condenser, the length is 400mm: 4:2:2 Flask with a volume of 500mL: 4:2:3 Insulation pad, made of ceramic fiber material: 4:2:4 Electromagnetic stirrer, with temperature-controlled heating plate, constant temperature oil bath or heating block, the temperature can be maintained at 140 ℃ ~ 150 ℃: ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 24282-2021_English be delivered?Answer: Upon your order, we will start to translate GB/T 24282-2021_English as soon as possible, and keep you informed of the progress. 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