GB/T 22271.2-2021_English: PDF (GB/T22271.2-2021)
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Plastics -- Polyoxymethylene(POM) moulding and extrusion materials -- Part 2: Preparation of test specimens and determination of properties
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GB/T 22271.2-2021
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GB/T 22271.2-2008 | English | 279 |
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Plastics -- Polyoxymethylene (POM) moulding and extrusion materials -- Part 2: Preparation of test specimens and determination of properties
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GB/T 22271.2-2008
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Standard ID | GB/T 22271.2-2021 (GB/T22271.2-2021) | Description (Translated English) | Plastics -- Polyoxymethylene(POM) moulding and extrusion materials -- Part 2: Preparation of test specimens and determination of properties | Sector / Industry | National Standard (Recommended) | Classification of Chinese Standard | G31 | Classification of International Standard | 83.080.20 | Word Count Estimation | 11,193 | Date of Issue | 2021-10-11 | Date of Implementation | 2022-05-01 | Older Standard (superseded by this standard) | GB/T 22271.2-2008 | Drafting Organization | Chongqing Yuntianhua Tianju New Material Co., Ltd., Zhonglan Chenguang Chengdu Testing Technology Co., Ltd., Tangshan Zhonghao Chemical Co., Ltd., National Energy Group Ningxia Coal Industry Co., Ltd., Kaifeng Longyu Chemical Co., Ltd., Yankuang Lunan Chemical Co., Ltd. , Chongqing Kejufu Engineering Plastics Co., Ltd., Jilin Provincial Product Quality Supervision and Inspection Institute, China General Nuclear Power Juner (Zhejiang) New Materials Co., Ltd. | Administrative Organization | National Plastics Standardization Technical Committee (SAC/TC 15) | Proposing organization | China Petroleum and Chemical Industry Federation | Issuing agency(ies) | State Administration for Market Regulation, National Standardization Administration | Standard ID | GB/T 22271.2-2008 (GB/T22271.2-2008) | Description (Translated English) | Plastics. Polyoxymethylene (POM) moulding and extrusion materials. Part 2: Preparation of test specimens and determination of properties | Sector / Industry | National Standard (Recommended) | Classification of Chinese Standard | G31 | Classification of International Standard | 83.080.20 | Word Count Estimation | 7,723 | Date of Issue | 2008-08-04 | Date of Implementation | 2009-04-01 | Quoted Standard | GB/T 1033.1-2008; GB/T 1034-2008; GB/T 1040.1-2006; GB/T 1040.2-2006; GB/T 1043.1-2008; GB/T 1408.1-2006; GB/T 1409-2006; GB/T 1410-2006; GB/T 1634.1-2004; GB/T 1634.2-2004; GB/T 1843-2008; GB/T 2918-1998; GBB/T 3682-2000; GB/T 4207-2003; GB/T 9341-2008; GB/T 11546-2006; GB/T 11997-2008; GB/T 17037.1-1997; GB/T 17037.3-2003; GB/T 17037.4-2003; GB/T 19466.3-2004; GB/T 19467.1-2004; GB/T 22271.1-2008; IEC 60296-1982 | Adopted Standard | ISO 9988-2-1999, IDT | Drafting Organization | National Quality Supervision and Inspection Center of synthetic resin | Administrative Organization | National Standardization Technical Committee general method of plastic resins and plastic products Technical Committee | Regulation (derived from) | National Standard Approval Announcement 2008 No.12 (Total No.125) | Proposing organization | China Petroleum and Chemical Industry Association | Issuing agency(ies) | Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China | Summary | This standard specifies test methods and preparation of polyoxymethylene molding and extruding the material properties of the sample measured. Given before the test sample before molding and processing and conditioning requirements. This section provides sample preparation methods and conditions, as well as methods for measuring the sample. Lists the performance and test methods to characterize POM molding and extrusion materials. |
GB/T 22271.2-2021
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 83.080.20
CCS G 31
GB/T 22271.2-2021 / ISO 29988-2:2018
Replacing GB/T 22271.2-2008
Plastics - Polyoxymethylene (POM) moulding and extrusion
materials - Part 2: Preparation of test specimens and
determination of properties
(ISO 29988-2:2018, IDT)
ISSUED ON: OCTOBER 11, 2021
IMPLEMENTED ON: MAY 01, 2022
Issued by: State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
Introduction ... 5
1 Scope ... 6
2 Normative references ... 6
3 Definitions and terms ... 8
4 Preparation of specimen ... 8
5 State conditioning of specimen ... 9
6 Performance determination ... 9
Appendix NA (Informative) Chinese documents that have a consistent correspondence
with the international documents as normatively cited in this document ... 12
References ... 14
Plastics - Polyoxymethylene (POM) moulding and extrusion
materials - Part 2: Preparation of test specimens and
determination of properties
1 Scope
This document specifies methods for the preparation of test specimens AND the
determination of properties, for polyoxymethylene molding and extrusion materials.
This document specifies the handling of the tested material, as well as the state
conditioning requirements for the tested material prior to molding and the specimen
prior to testing. This document specifies the methods and conditions for specimen
preparation, as well as the method for measuring the specimen.
This document applies to POM molding and extrusion materials.
This document lists properties and test methods, for characterizing polyoxymethylene
molding and extrusion materials. These properties are selected from general test
methods. Some other particularly important or widely used test methods, for POM
molding and extrusion materials, are also covered in this document, along with
characteristic properties: melt flow rate and tensile modulus of elasticity.
In order to obtain comparable and reproducible test results, it is intended to be carried
out, in accordance with the sample preparation process and state conditioning method,
sample size, test method, which is specified in this document. Test data, which uses
different specimen sizes or specimen preparation methods, may not be consistent.
2 Normative references
The contents of the following documents constitute essential provisions of this
document through normative references in the text. Among them, for dated references,
only the version corresponding to the date applies to this document; for undated
references, the latest version (including all amendments) is applicable to this document.
ISO 62 Plastics - Determination of water absorption
ISO 75-2 Plastics - Determination of temperature of deflection under load - Part 2:
Plastics and ebonite
ISO 178 Plastics - Determination of flexural properties
IEC 60296 Fluids for electrotechnical applications - Unused mineral insulating oils
for transformers and switchgear
IEC 62631-3-1 Dielectric and resistive properties of solid insulating materials - Part
3-1: Determination of resistive properties (DC Methods) - Volume resistance and
volume resistivity - General method
IEC 62631-3-2 Dielectric and resistive properties of solid insulating materials - Part
3-2: Determination of resistive properties (DC methods) - Surface resistance and
surface resistivity
3 Definitions and terms
There are no terms and definitions, that need to be defined, in this document.
ISO and IEC maintain terminology databases for standardization, at the following
websites:
- IEC Electropedia: available at http://www.electropedia.org/
- ISO Online browsing platform: available at https://www.iso.org/obp
4 Preparation of specimen
4.1 Overview
Specimens shall be prepared, using injection molding. Specimens shall be prepared,
using the same process and the same processing conditions. Standard conditions are as
given in Table 1.
Materials shall be kept in moisture-proof containers until processing.
4.2 Pretreatment of materials before molding
Material samples generally do not require pretreatment, prior to processing.
Note: POM molding material particle surfaces can absorb moisture, which may cause surface
defects in molded specimens. In order to ensure that the surface of the specimen is free of
defects, the material can be dried at a temperature of 80 °C, for at least 4 h.
4.3 Injection
Specimens shall be prepared, according to ISO 294-1, ISO 294-3 or ISO 294-4, using
the conditions specified in Table 1.
tracking indices of solid insulating materials (IEC 60112:2009, IDT);
- GB/T 9341-2008 Plastics - Determination of flexural properties (ISO 178:2001,
IDT);
- GB/T 11546.1-2008 Plastics - Determination of creep behavior - Part 1: Tensile
creep (ISO 899-1:2003, IDT);
- GB/T 17037.1-2019 Plastics - Injection moulding of test specimens of
thermoplastic materials - Part 1: General principles, and molding of multipurpose
and bar test specimens (ISO 294-1:2017, MOD);
- GB/T 17037.3-2003 Plastics - Injection moulding of test specimens of
thermoplastic materials - Part 3: Small plates (ISO 294-3:2002, IDT);
- GB/T 17037.4-2003 Plastics - Injection moulding of test specimens of
thermoplastic materials - Part 4: Determination of moulding shrinkage (ISO 294-
4:2001, IDT);
- GB/T 19466.3-2004 Plastics - Differential scanning calorimetry (DSC) - Part 3:
Determination of temperature and enthalpy of melting and crystallization (ISO
11357-3:1999, IDT);
- GB/T 19467.1-2004 Plastics - Acquisition and presentation of comparable single-
point data - Part 1: Moulding materials (ISO 10350-1:1998, MOD);
- GB/T 31838.2-2019 Dielectric and resistive properties of solid insulating materials
- Part 2: Determination of resistive properties (DC Methods) - Volume resistance
and volume resistivity - General method (IEC 62631-3-1:2016, IDT);
- GB/T 31838.3-2019 Dielectric and resistive properties of solid insulating materials
- Part 3: Determination of resistive properties (DC methods) - Surface resistance
and surface resistivity (IEC 62631-3-2:2015, IDT);
- GB/T 36800.2-2018 Plastics - Thermomechanical analysis (TMA) - Part 2:
Determination of coefficient of linear thermal expansion and glass transition
temperature (ISO 11359-2:1999, IDT);
- GB/T 37426-2019 Plastics - Test specimens (ISO 20753:2018, MOD).
......
GB/T 22271.2-2008
. Plastics Polyoxymethylene (POM) moulding and extrusion materials Part 2. Preparation of test specimens and determination of properties
ICS 83.080.20
G31
National Standards of People's Republic of China
GB/T 22271.2-2008/ISO 9988-2.1999
Plastic polyoxymethylene (POM) molding and extrusion materials
Part 2. Sample preparation and determination of properties
(ISO 9988-2.1999, IDT)
Posted 2008-08-04
2009-04-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 22271 "plastic polyoxymethylene (POM) molding and extrusion materials" is divided into two parts.
--- Part 1. Designation system and basis;
--- Part 2. Sample preparation and performance measurement.
This section GB/T 22271 Part 2, this part identical with ISO 9988-2.1999 "Plastics molding and extrusion ---
Plastic materials --- Part 2. Sample Preparation and Performance Testing "(1999 in English).
For ease of use, this section made the following editorial changes.
--- To the "international standards" be replaced by the "Standard" or "GB/T 22271", the "this part of ISO 9988" to "GB/T 22271
This part of "or" this part ";
--- Remove the ISO 9988-2.1999 Foreword;
--- Increasing the foreword of national standards in this section.
This part is proposed by the China Petroleum and Chemical Industry Association.
This part of the National Standardization Technical Committee of plastic resin, plastic products and general methods Technical Committee (SAC/TC15/SC4)
Centralized.
This section is responsible for drafting. National Quality Supervision and Inspection Center of synthetic resin, Yuntianhua Company.
Participated in the drafting of this section. National Chemical Building Materials Test Center, Guangzhou Blonde Technology Co., Ltd., Shandong Dawn Group.
The main drafters of this section. Zheng Ning, Wang Jiandong, Saline, general Xuetao, Hu Zhiying.
This section first release.
GB/T 22271.2-2008/ISO 9988-2.1999
Plastic polyoxymethylene (POM) molding and extrusion materials
Part 2. Sample preparation and determination of properties
1 Scope
This section GB/T 22271 specifies the test methods for preparation and properties of molding and extrusion material sample measured. Given
The molding and before the test sample before treatment and conditioning requirements.
It specifies the sample preparation methods and conditions, and methods of measurement of the sample. Lists characterization molding and extrusion materials
And test methods.
These properties are selected from the GB/T 19467-2004 General test method, the other for molding and extrusion materials are widely used
Or important test method is also included in this standard, such as the performance of specified in Section 1, the melt flow rate
And tensile modulus.
In order to obtain repeatable test results comparable, it is necessary to use a sample preparation method and state regulation of the provisions of this section, the sample size
And test methods. Data of different sizes or different sample preparation method was not comparable.
2 Normative references
The following documents contain provisions which, through GB/T 22271 in this part of the reference in terms of this section. For dated reference documents
Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section
Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this
section.
1033.1-2008 non-plastic foam density measurement GB/T Part 1. Immersion method, liquid pyknometer method and titration method
(ISO 1183-1.2004, IDT)
GB/T 1034-2008 Plastics Determination of water absorption (ISO 62.1999, IDT)
GB /1040.1-2006 Plastics Determination of tensile properties T Part 1. General (ISO 527-1.1993, IDT)
GB /1040.2-2006 Plastics Determination of tensile properties T - Part 2. Test plastics molding and extrusion conditions (ISO 527-
2.1993, IDT)
GB /1043.1-2008 plastic Charpy impact properties measured T Part 1. Non-instrumented impact test (ISO 179-1.
2000, IDT)
GB/T 1408.1-2006 electrical insulating materials strength test methods - Part 1. Tests at power frequencies (IEC 60243-1.1998,
IDT)
GB/T 1409-2006 Measurement of electrical insulating materials at power, audio, high-frequency (including meter wavelengths included) of the permittivity and dielectric loss
Consumption factor recommended method (IEC 60250. 1969, IDT)
GB/T 1410-2006 solid insulating material volume resistivity and surface resistivity test methods (IEC 60093. 1980, IDT)
Determination of GB/T 1634.1-2004 Plastics deflection temperature under load - Part 1. General test method (ISO 75-1.2003,
IDT)
GB/T 1634.2-2004 Determination of plastic deflection temperature under load - Part 2. Plastics, ebonite and long-fiber-reinforced composite materials
Material (ISO 75-2.2003, IDT)
Determination of strength (ISO 180.2000, IDT) GB/T 1843-2008 plastic Izod impact
GB/T 2918-1998 standard plastic sample conditioning and environmental tests (idt ISO 291.1997)
GB/T 3682-2000 quality thermoplastic melt flow rate and melt volume flow rate measurement (idt ISO 1133.
GB/T 22271.2-2008/ISO 9988-2.1999
......
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