GB/T 2546.2-2022 English PDF (GBT2546.2-2022)

Delivery: 3 seconds. Download true-PDF + Invoice.
Get Quotation: Click GB/T 2546.2-2022 (Self-service in 1-minute)
Historical versions (Master-website): GB/T 2546.2-2022
Preview True-PDF (Reload/Scroll-down if blank)

GB/T 2546.2-2022: Plastics - Polypropylene(PP) moulding and extrusion materials - Part 2: Preparation of test specimens and determination of properties
GB/T 2546.2-2022
Plastics - Polypropylene(PP) moulding and extrusion materials - Part 2.Preparation of test specimens and determination of properties
ICS 83.080.20
CCSG31
National Standards of People's Republic of China
Replacing GB/T 2546.2-2003
Plastic Polypropylene (PP) Molding and Extrusion Materials
Part 2.Specimen preparation and performance determination
(ISO 19069-2.2016, MOD)
Published on 2022-07-11
2023-02-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration
foreword
This document is drafted in accordance with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents".
This document is Part 2 of GB/T 2546 "Plastic Polypropylene (PP) Moulding and Extrusion Materials", GB/T 2546 has been published to
the next part.
--- Part 1.Nomenclature system and classification basis;
--- Part 2.Sample preparation and performance determination.
This document replaces GB/T 2546.2-2003 "Plastic polypropylene (PP) molding and extrusion materials - Part 2.Sample preparation and properties
can be measured". Compared with GB/T 2546.2-2003, the main technical changes of this document are as follows, except for structural adjustments and editorial changes.
a) The standard environment of the test is specified separately according to the filled sample and the unfilled sample (see Chapter 6, Chapter 5 of the.2003 edition);
b) The standard ambient relative humidity of the test "50% ± 5%" is changed to "(50 ± 10)%" (see Chapter 6, Chapter 5 of the.2003 edition);
c) In general properties, the glass transition temperature is increased (see Table 3);
d) The size and thickness of the flammable sample are modified to 1.5mm and larger than 1.5mm (see Table 3);
e) The size of the electrical strength sample is modified to one, namely. ≥60mm×≥60mm×1mm;
Change to ≥20mm×≥20mm×4mm (see Table 3);
f) All penetration energies are moved from Table 4 of Additional Properties to Table 3 of General Properties, expressed as penetrating energy and maximum penetrating force, and corresponding to the test conditions
are specified in detail (see Tables 3 and 4);
g) Add xylene soluble content item in additional properties (see Table 4).
This document uses the redrafted law to amend ISO 19069-2.2016 Plastics Polypropylene (PP) Molding and Extrusion Materials Part 2
Part. Sample Preparation and Performance Determination".
A chapter "Terms and Definitions" has been added to this document.
There are technical differences between this document and ISO 19069-2.2016.The main technical differences and their reasons are as follows.
a) Regarding normative reference documents, this document has made adjustments with technical differences.
The document replaces the corresponding international document to adapt to the technical conditions of our country.
Please refer to Appendix A for specific adjustments;
b) In general properties, the melt mass flow rate increases the test condition "230℃/5kg" to make the standard regulations more perfect (see Table 3);
c) In general performance, the test items increase the bending strength to make the standard provisions more perfect (see Table 3).
The following editorial changes have also been made to this document.
--- The tensile fracture nominal strain symbol is modified to "εtb", the tensile fracture stress symbol is modified to "σb", and the tensile fracture strain symbol is modified to
"εb", the penetration energy is modified to "EP" (see Table 3).
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., China Petrochemical Corporation Qilu Branch,
Beijing Huasu Chenguang Technology Co., Ltd., Shandong Daon Polymer Materials Co., Ltd., China Petrochemical Corporation Beijing
Yanshan Branch of Beihua Institute, Shandong Dongbo Petrochemical Co., Ltd.
The main drafters of this document. Hu Shengwei, Yang Chunmei, Cheng Zhiling, Zhang Yongtao, Chen Hongyuan, Zhao Lei, Zheng Huiqin, Wang Chaoxian, Wang Yaowei,
Pang Haiping and Wang Qiaolin.
This document was first published in.2003 and this is the first revision.
introduction
GB/T 2546 is the basic standard for the classification and nomenclature, sample preparation and performance determination of polypropylene resins.
provided support. GB/T 2546 was revised and adopted the ISO 19069 standard. Due to the changes in the guidelines of the ISO standard, the naming system was carried out accordingly.
In order to adjust, the standard part of the test method closely related to sample preparation and performance measurement has been revised, and there are technical differences, so the
Amendment to GB/T 2546.
GB/T 2546 consists of two parts under the general title "Plastic Polypropylene (PP) Molding and Extrusion Materials".
--- Part 1.Nomenclature system and classification basis;
--- Part 2.Sample preparation and performance determination.
This part specifies the conditions for the preparation of compression molding and injection molding samples of polypropylene molding and extruding materials, and the items, methods, procedures and
Test conditions, as well as requirements for the handling of the test material and the conditioning of the material before molding and the state of the specimen before testing. All sample preparation,
The regulation of state, sample size and test conditions are all to make the test results reproducible and comparable, with data comparison.
platform.
Plastic Polypropylene (PP) Molding and Extrusion Materials
Part 2.Specimen preparation and performance determination
1 Scope
This document specifies the methods and conditions for the preparation and determination of properties of polypropylene (PP) molded and extruded materials. This document also specifies
Requirements for pretreatment of test materials and conditioning of specimens prior to testing.
This document lists properties and test methods suitable and necessary to characterize polypropylene (PP) molding and extrusion materials. These properties are derived from
Selected from GB/T 19467.1 General Test Methods. This document also lists the widely used or special significance of molding and extrusion materials.
Other test methods, and methods of determination of the named properties in Part 1.
In order to ensure the reproducibility and reproducibility of test results, it is necessary to use the methods of sample preparation and condition adjustment specified in this document to
and the specified sample size and test method. Test data obtained using specimens prepared under different conditions or using specimens of different sizes can be
can be inconsistent.
2 Normative references
The 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 1033.1 Determination of Density of Plastic Non-foamed Plastics Part 1.Impregnation, Pycnometer and Titration
(GB/T 1033.1-2008, ISO 1183-1.2004, IDT)
GB/T 1033.2 Determination of the density of non-foamed plastics - Part 2.Density gradient column method (GB/T 1033.2-2010,
ISO 1183-2.2004, MOD)
GB/T 1033.3 Determination of the density of non-foamed plastics - Part 3.Gas pycnometer method (GB/T 1033.3-2010,
ISO 1183-3.1999, IDT)
GB/T 1034 Determination of water absorption of plastics (GB/T 1034-2008, ISO 62.2008, IDT)
GB/T 1040.2 Determination of Tensile Properties of Plastics Part 2.Test Conditions for Molded and Extruded Plastics (GB/T 1040.2-
2022, ISO 527-2.2012, IDT)
GB/T 1043.1 Determination of impact properties of plastic simply supported beams - Part 1.Non-instrumented impact test (GB/T 1043.1-
2008, ISO 179-1.2000, IDT)
GB/T 1043.2 Determination of impact properties of plastic simply supported beams - Part 2.Instrumented impact test (GB/T 1043.2-2018,
ISO 179-2.1997, IDT)
GB/T 1408.1 Test method for electrical strength of insulating materials Part 1.Test under power frequency (GB/T 1408.1-2016,
IEC 60243-1.2013, IDT)
GB/T 1409 Determination of permittivity and dielectric loss factor of electrical insulating materials at power frequency, audio frequency, high frequency (including metric wave wavelength)
Recommended method (GB/T 1409-2006, IEC 60250.1969, MOD)
GB/T 1632.3 Plastics - Determination of the Viscosity of Diluted Polymer Solutions by Capillary Viscometer - Part 3.Polyethylene and Polypropylene
(GB/T 1632.3-2010, ISO 1628-3.2001, MOD)
GB/T 1634.2 Determination of plastic deformation temperature under load Part 2.Plastics and hard rubber (GB/T 1634.2-2019,
ISO 75-2.2013, MOD)