GB/T 1844.2-2022 PDF English
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GB/T 1844.2: Historical versions
| Standard ID | USD | BUY PDF | Delivery | Standard Title (Description) | Status |
| GB/T 1844.2-2022 | 95 | Add to Cart | Auto, 9 seconds. | Plastics - Symbols and abbreviated terms - Part 2: Fillers and reinforcing materials | Valid |
| GB/T 1844.2-2008 | 85 | Add to Cart | Auto, 9 seconds. | Plastics -- Symbols and abbreviated terms -- Part 2: Fillers and reinforcing materials | Obsolete |
| GB/T 1844.2-1995 | 239 | Add to Cart | 2 days | Symbols of plastics and resins--Part 2: Fillers and reinforcing materials | Obsolete |
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GB/T 1844.2-2022: Plastics - Symbols and abbreviated terms - Part 2: Fillers and reinforcing materials
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT1844.2-2022
GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 83.080.01 CCS G 31 GB/T 1844.2-2022 / ISO 1043-2:2011 Replacing GB/T 1844.2-2008 Plastics -- Symbols and abbreviated terms -- Part 2: Fillers and reinforcing materials (ISO 1043-2:2011, IDT) ISSUED ON: OCTOBER 12, 2022 IMPLEMENTED ON: OCTOBER 12, 2022 Issued by: State Administration for Market Regulation; Standardization Administration of the People's Republic of China.
Table of Contents
Foreword ... 3 Introduction ... 5 1 Scope ... 6 2 Normative references ... 6 3 Terms and definitions ... 6 4 Use of symbols ... 6 5 Symbols ... 7 Bibliography ... 10Foreword
This document was drafted in accordance with the rules given in GB/T 1.1-2020 "Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents". This document is Part 2 of GB/T1844 "Plastics -- Symbols and abbreviated terms". The following parts of GB/T 1844 have been published: - Part 1: Basic polymers and their special characteristics; - Part 2: Fillers and reinforcing materials; - Part 3: Plasticizers; - Part 4: Flame retardants. This document replaces GB/T 1844.2-2008 "Plastics -- Symbols and abbreviated terms -- Part 2: Fillers and reinforcing materials". Compared with GB/T 1844.2-2008, in addition to structural adjustments and editorial changes, the main technical changes are as follows: a) According to general requirements, the symbols of aromatic polyamides have been changed (see 5.1 of this Edition; 3.2 of Edition 2008); b) The symbols "ME", "EM", "CM", "LF", "NF" and the names of the materials they represent have been added (see 5.1 and 5.2 of this Edition). This document identically adopts ISO 1043-2:2011 "Plastics -- Symbols and abbreviated terms -- Part 2: Fillers and reinforcing materials". Two chapters "Normative reference" and "Terms and definitions" have been added to this document. The following minimal editorial changes were made to this document: - The content of "Applicable limits" has been added to the "Scope" chapter to comply with the provisions of GB/T 1.1-2020. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing authority shall not be held responsible for identifying any or all such patent rights. This document was proposed by China Petroleum and Chemical Industry Association. This document shall be under the jurisdiction of National Technical Committee on Plastics of Standardization Administration of China (SAC/TC 15). Plastics -- Symbols and abbreviated terms -- Part 2: Fillers and reinforcing materials1 Scope
This document defines uniform symbols for terms related to fillers and reinforcements. This document includes only abbreviations whose purpose is clear, in order to avoid multiple abbreviations for a specific filler or reinforcement or multiple interpretations of a specific abbreviation. This document applies to plastic fillers and reinforcements. NOTE: The symbols and abbreviations of base polymers and their special properties are shown in GB/T 1844.1. The symbols and abbreviations of plasticizers are shown in GB/T 1844.3. The symbols and abbreviations of flame retardants are shown in GB/T 1844.4.2 Normative references
This document has no normative references.3 Terms and definitions
There are no terms or definitions that require definition in this document.4 Use of symbols
4.1 The symbols for fillers and reinforcing materials are specified in 5.1. The symbols for indicating the shape and/or structure of fillers and reinforcing materials are specified in 5.2. 4.2 Except for chemical symbols, capital letters should be used. 4.3 The type of filler and reinforcing material is indicated by the first letter. The physical shape or structure is indicated by the second letter. NOTE: Some special cases use 1 or more letters, see Table 1 and Table 2. Example 1: GF stands for glass fiber. Example 2: GCM stands for chopped glass fiber. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
