GB/T 1844.2-2022Plastics - Symbols and abbreviated terms - Part 2: Fillers and reinforcing materials (English PDF)

Foreword

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 materials

1 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