GB/T 21461.1-2023 English PDFUS$289.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 21461.1-2023: Plastics - Ultra-high-molecular-weight polyethylene (PE-UHMW) moulding and extrusion materials - Part 1: Designation system and basis for specifications Status: Valid GB/T 21461.1: Historical versions
Basic dataStandard ID: GB/T 21461.1-2023 (GB/T21461.1-2023)Description (Translated English): Plastics - Ultra-high-molecular-weight polyethylene (PE-UHMW) moulding and extrusion materials - Part 1: Designation system and basis for specifications Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: G31 Classification of International Standard: 83.080.20 Word Count Estimation: 14,166 Date of Issue: 2023-11-27 Date of Implementation: 2024-06-01 Older Standard (superseded by this standard): GB/T 21461.1-2008 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 21461.1-2023: Plastics - Ultra-high-molecular-weight polyethylene (PE-UHMW) moulding and extrusion materials - Part 1: Designation system and basis for specifications---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 83:080:20 CCSG31 National Standards of People's Republic of China Replace GB/T 21461:1-2008 Plastic ultra-high molecular weight polyethylene (PE-UHMW) Molding and Extrusion Materials Part 1: Nomenclature System and classification basis (ISO 21304-1:2019,MOD) Published on 2023-11-27 2024-06-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee ForewordThis document complies with the provisions of GB/T 1:1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting: This document is Part 1 of GB/T 21461 "Plastic ultra-high molecular weight polyethylene (PE-UHMW) molding and extrusion materials": GB/T 21461 has published the following parts: ---Part 1: Nomenclature system and classification basis; ---Part 2: Sample preparation and performance determination: This document replaces GB/T 21461:1-2008 "Plastic ultra-high molecular weight polyethylene (PE-UHMW) molding and extrusion materials No: 1 Part: Naming System and Classification Basis", compared with GB/T 21461:1-2008, in addition to structural adjustments and editorial changes, the main technical changes transformed as follows: a) Part of the content of the scope has been changed, and the characteristic property "viscosity" has been changed to "viscosity number (specific concentrated viscosity)"; special purpose materials can be Description of additional requirements for character group 5 was changed to the clauses related to character group 5 (see Chapter 1 and 4:6,:2008 edition of 1:5 and 3:6); b) Added description group and national standard number part (see 4:1); c) Changed the order of character groups in named feature item groups (see Chapter 4, Chapter 3 of the:2008 edition); d) The meaning of the letter "E" in position 1 of character group 3 has been changed from "extrusion" to "extruded pipes, profiles and sheets/plates"; The meaning of the mother "Y" is changed from "spinning" to "fiber, spinning" (see Table 2, Table 1 of the:2008 version); e) Changed the range of viscosity number (see Table 3, Table 2 of the:2008 version); f) The range of tensile stress has been changed (see Table 4, Table 3 of the:2008 edition); g) Changed the range of double-notch impact strength of simply supported beams (see Table 5, Table 4 of the:2008 edition); h) Added naming examples for ultra-high molecular weight polyethylene thermoplastics used for extruded pipes (see 5:1:2) and ultra-high molecular weight polyethylene thermoplastics used for spinning: Examples of nomenclature for high molecular weight polyethylene thermoplastics (see 5:1:3): This document is modified to adopt ISO 21304-1:2019 "Plastic ultra-high molecular weight polyethylene (PE-UHMW) molding and extrusion materials" Part 1: Nomenclature systems and basics of classification: The technical differences between this document and ISO 21304-1:2019 and their reasons are as follows: a) Part of the content of the scope has been changed, and the characteristic performance "viscosity number" has been changed to "viscosity number (specific concentrated viscosity)"; special-purpose materials can be The description of additional requirements given in character group 5 has been changed to the clauses related to character group 5 to make the content of the standard clearer and facilitate this document: Application of documentation (see Chapter 1 and 4:6); b) Replace ISO 1043-1 (see 4:1) with normatively quoted GB/T 1844:1 to adapt to my country’s technical conditions and increase operability work nature; c) Replace ISO 1628-3 (see 4:5:2) with normatively quoted GB/T 1632:3 to adapt to my country’s technical conditions and increase operability work nature; d) Replace ISO 21304-2 (see 4:5:3 and 4:5:4) with normatively cited GB/T 21461:2-2023 to adapt to my country’s technology technical conditions to increase operability; e) Replace ISO 5834-1 (see 5:2) with normatively cited GB/T 19701:1 to adapt to my country’s technical conditions and increase operability Doing things: Please note that some content in this document may be subject to patents: The publisher 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: Beijing Huasu Chenguang Technology Co:, Ltd:, Beijing Yanshan Petrochemical High-tech Technology Co:, Ltd:, Shanghai Chemical Industry Research Institute Research Institute Co:, Ltd:, China National Petroleum Corporation Petrochemical Research Institute, Tongrail Technology Chengdu Co:, Ltd:, Chengde Jinjian Construction Inspection Co:, Ltd: Measuring Instrument Co:, Ltd:, China National Petroleum Corporation Liaoyang Petrochemical Branch, Hangzhou Zhongwang Technology Co:, Ltd:, Sinopec Beijing Yanshan Branch of PetroChina Co:, Ltd:, Lanzhou Petrochemical Branch of China National Petroleum Corporation, China National Petroleum Corporation Co:, Ltd: Dushanzi Petrochemical Branch, Ningbo Futian New Material Technology Co:, Ltd: The main drafters of this document: Chen Hongyuan, Wang Zhengyuan, Zheng Huiqin, Wang Yaling, Shen Xianting, Qu Jingbo, Xie Jianling, Ren Yufeng, Yang Zhenguo, Zhu Ansheng, Niu Jin, Ai Hongcheng, Zhang Xiangling, Wang Xiaoli, Li Zhi, He Chong, Chen Qili, Helina, Liu Dongsheng, Wei Lin: This document was first published in:2008 and this is the first revision:IntroductionThe previous version of GB/T 21461:1 (this document) and the previous version of GB/T 21461:2 released at the same time as this document are adopted equally: ISO 11542-1:2001 and ISO 11542-2:1998: In:2016, my country took the lead in revising ISO 11542-1:2001 and ISO 11542-2: In:1998, the ISO /TC61/SC9 Thermoplastics Branch revised the material naming system rules and released a new material naming system: Name format template: In order to facilitate the readers and users of the standard to become familiar with it and use it during the transition period, ISO stipulates that the standard Part 1 of the new template should be adopted: New standard numbers are given when the standard is revised: Part 2 standards also appear with new standard numbers when they are revised: Therefore, the ISO standard is revised to ISO 21304-1:2019 and ISO 21304-2:2021 replace ISO 11542-1:2001 and ISO 11542-2:1998 respectively: GB/T 21461 is intended to consist of two parts: ---Part 1: Nomenclature system and classification basics: The purpose is to establish a standard model suitable for ultra-high molecular weight polyethylene materials: Nomenclature and classification principles of materials: ---Part 2: Sample preparation and performance determination: The purpose is to establish a sample preparation method suitable for ultra-high molecular weight polyethylene materials: Methods and performance measurement items, methods and conditions: This document is modified to adopt ISO 21304-1:2019, based on the characteristics of ultra-high molecular weight polyethylene (PE-UHMW) molding and extrusion materials: points, with specified characteristic property values as well as recommended uses and/or processing methods, important properties, additives, colorants, fillers and reinforcing materials et al:, specify a nomenclature classification method for different types of ultra-high molecular weight polyethylene molding and extrusion materials: This document supplements the binning ranges for three characteristic properties of ultra-high molecular weight polyethylene (PE-UHMW) molded and extruded materials: Improve, especially combined with the application characteristics of PE-UHMW materials in new fields, the viscosity number that characterizes the molecular weight of PE-UHMW materials: The (reduced viscosity) binning range has been appropriately extended to the low molecular weight end: Therefore, this document and the previous version of this document are adopted for PE-UHMW Material nomenclature may vary: GB/T 21461:2 released at the same time as this document adopts a triple cut-off under the condition of 230℃/21:6kg: It is a test item to measure the melt volume flow rate (MVR) of PE-UHMW materials using an area die (inner diameter 3:628mm), which can quickly measure part Flowability of lower molecular weight PE-UHMW materials for specific applications: Due to the ISO standard revision rules and the rapid development of PE-UHMW materials in my country, some aspects of the standard adoption standards will be revised during the revision process of this document: Technical modifications have been made to the sub-clauses and contents, and comparative instructions have been given in appropriate ways: Plastic ultra-high molecular weight polyethylene (PE-UHMW) Molding and Extrusion Materials Part 1: Nomenclature System and classification basis1 ScopeThis document specifies a nomenclature system for ultra-high molecular weight polyethylene (PE-UHMW) thermoplastic materials that may serve as a classification Base: The ultra-high molecular weight polyethylene (PE-UHMW) in this document refers to the melt mass at a temperature of 190°C and a load of 21:6kg: Polyethylene materials with a flow rate (MFR) less than 0:1g/10min: Note: GB/T 21461:2 has added the measurement of melt volume flow rate using a triple cross-sectional area die (inner diameter 3:628mm) under the conditions of 230℃/21:6kg: (MVR) additional performance test items, which are valuable for characterizing the performance of certain PE-UHMW materials (such as pipe materials): Different types of ultra-high molecular weight polyethylene thermoplastic materials are specified below with characteristic property values and recommended uses and/or processing A classification system based on methods, important properties, additives, colorants, fillers and reinforcing materials: a) Viscosity number (reduced viscosity); b) Definite tensile stress; c) Double-notch impact strength of simply supported beams: This document applies to all PE-UHMW homopolymers and other 1-olefin monomers with a mass fraction of less than 50% and non-olefins with functional groups: Copolymers with a mass fraction of hydrocarbon monomers not exceeding 3%: This document applies to ultra-high molecular weight polymers that are conventionally in the form of powder, granules or granules, unmodified or modified by colorants, additives, fillers, etc: Ethylene (PE-UHMW) thermoplastic: This document does not imply that materials named identically will necessarily have the same properties: This document is not intended to illustrate the specific uses of the material and (or) Engineering data, performance data or processing condition data required for the processing method: If necessary, use the test method specified in GB/T 21461:2 method to determine these additional properties:2 Normative reference documentsThe contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document: GB/T 1632:3 Determination of viscosity of polymer dilute solutions using capillary viscometer for plastics Part 3: Polyethylene and polypropylene (GB/T 1632:3-2010,ISO 1628-3:2001, MOD) GB/T 1844:1 Plastic symbols and abbreviations Part 1: Basic polymers and their characteristic properties (GB/T 1844:1- 2022,ISO 1043-1:2011,MOD) GB/T 19701:1 Ultra-high molecular weight polyethylene for surgical implants Part 1: Powder (GB/T 19701:1-2016, ISO 5834- 1:2005,IDT) GB/T 21461:2-2023 Plastic ultra-high molecular weight polyethylene (PE-UHMW) molding and extrusion materials Part 2: Samples Preparation and performance determination (GB/T 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