GB/T 39690.2-2020 English PDF (GBT39690.2-2020)

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GB/T 39690.2-2020: Plastics. Mixtures of polypropylene (PP) and polyethylene (PE) recyclate derived from PP and PE used for flexible and rigid consumer packaging -- Part 2: Preparation of test specimens and determination of properties
GB/T 39690.2-2020
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 83.080.20
G 31
GB/T 39690.2-2020 / ISO 18263-2:2015
Plastics - Mixtures of polypropylene (PP) and
polyethylene (PE) recyclate derived from PP and PE
used for flexible and rigid consumer packaging -
Part 2: Preparation of test specimens and
determination of properties
(ISO 18263-2:2015, IDT)
ISSUED ON: DECEMBER 14, 2020
IMPLEMENTED ON: JULY 01, 2021
Issued by: State Administration for Market Regulation;
Standardization Administration of the PRC.
Table of Contents
Foreword ... 3 
1 Scope ... 5 
2 Normative references ... 5 
3 Terms and definitions ... 6 
4 Preparation of test specimens... 6 
5 Conditioning of test specimens ... 7 
6 Determination of ratio of PP and PE ... 7 
7 Determination of properties ... 7 
Annex A (Informative) Determination of the ratio of PP and PE by the FTIR
spectrometer ... 9 
Annex B (Informative) The properties of the PP and PE mixture ... 11 
Bibliography ... 15 
Foreword
GB/T 39690 "Plastics - Mixtures of polypropylene (PP) and polyethylene (PE)
recyclate derived from PP and PE used for flexible and rigid consumer
packaging" is divided into two parts:
- Part 1: Designation system and basis for specification;
- Part 2: Preparation of test specimens and determination of properties.
This Part is Part 2 of GB/T 39690.
This Part is drafted in accordance with the rules given in GB/T 1.1-2009.
This Part, using translation method, is identical to ISO 18263-2:2015 "Plastics
- Mixtures of polypropylene (PP) and polyethylene (PE) recyclate derived from
PP and PE used for flexible and rigid consumer packaging - Part 2: Preparation
of test specimens and determination of properties".
China’s documents which have a consistent correspondence with the
international documents normatively referenced in this Part are as follows:
GB/T 1033.1-2008 Plastics - Methods for determining the density of non-
cellular plastics - Part 1: Immersion method, liquid pycnometer method and
titration method (ISO 1183-1:2004, IDT);
GB/T 1033.2-2010 Plastics - Methods for determining the density of non-
cellular plastics - Part 2: Density gradient column method (ISO 1183-2:2004,
MOD);
GB/T 1033.3-2010 Plastics - Methods for determining the density of non-
cellular plastics - Part 3: Gas pycnometer method (ISO 1183-3:1999, IDT);
GB/T 1040.1-2018 Plastics - Determination of tensile properties - Part 1:
General principles (ISO 527-1:2012, IDT);
GB/T 1040.2-2006 Plastic - Determination of tensile properties - Part 2: Test
conditions for moulding and extrusion plastic (ISO 527-2:1993, IDT);
GB/T 1043.1-2008 Plastics - Determination of Charpy impact properties -
Part 1: Non-instrumented impact test (ISO 179-1:2000, IDT);
GB/T 2035-2008 Terms and definitions for plastics (ISO 472:1999, IDT);
GB/T 2918-2018 Plastics - Standard atmospheres for conditioning and
testing (ISO 291:2008, MOD);
Plastics - Mixtures of polypropylene (PP) and
polyethylene (PE) recyclate derived from PP and PE
used for flexible and rigid consumer packaging -
Part 2: Preparation of test specimens and
determination of properties
1 Scope
This Part of GB/T 39690 specifies methods of preparation of test specimens
and the standard methods to be used in determining the properties of mixtures
of polypropylene (PP) and polyethylene (PE) recyclate derived from PP and PE
used for flexible and rigid consumer packaging for moulding and extrusion.
Recyclate from packaging used for the transport, handling, or storage of
hazardous goods is not to be used. Since it is impossible to get the information
about stabilizer levels of recyclate, it is necessary to add stabilizer as needed.
This Part specifies the requirements for pretreatment conditions and
conditioning of the test specimens.
2 Normative references
The following documents are indispensable for the application of this document.
For the dated references, only the editions with the dates indicated are
applicable to this document. For the undated references, the latest edition
(including all the amendments) are applicable to this document.
ISO 178 Plastics - Determination of flexural properties
ISO 179-1 Plastics - Determination of Charpy impact properties - Part 1: Non-
instrumented impact test
ISO 179-2 Plastics - Determination of Charpy impact properties - Part 2:
Instrumented impact test
ISO 291 Plastics - Standard atmospheres for conditioning and testing
ISO 472 Plastics - Vocabulary
ISO 527-1 Plastics - Determination of tensile properties - Part 1: General
principles
ISO 527-2 Plastics - Determination of tensile properties - Part 2: Test
conditions for moulding and extrusion plastics
ISO 1133-1 Plastics - Determination of the melt mass-flow rate (MFR) and
melt volume-flow rate (MVR) of thermoplastics - Part 1: Standard method
ISO 1183-1 Plastics - Methods for determining the density of non-cellular
plastics - Part 1: Immersion method, liquid pycnometer method and titration
method
ISO 1183-2 Plastics - Methods for determining the density of non-cellular
plastics - Part 2: Density gradient column method
ISO 1183-3 Plastics - Methods for determining the density of non-cellular
plastics - Part 3: Gas pycnometer method
ISO 10350-1 Plastics - Acquisition and presentation of comparable single-
point data - Part 1: Moulding materials
ISO 15270 Plastics - Guidelines for the recovery and recycling of plastics
waste
ISO 18263-1 Plastics - Mixtures of polypropylene (PP) and Polyethylene (PE)
recyclate derived from PP and PE used for flexible and rigid consumer
packaging - Part 1: Designation system and basis for specification
ISO 19069-2 Plastics - Polypropylene (PP) moulding and extrusion materials
- Part 2: Preparation of test specimens and determination of properties
ISO 20753 Plastics - Test specimens
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 472
and ISO 15270 apply.
4 Preparation of test specimens
The test specimens shall be prepared in accordance with ISO 19069-2 and
shall be tested in accordance with methods indicated in Table 1. It is essential
that specimens are always prepared by the same procedure using the same
conditions.