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SH/T 1761.2-2019: (Polypropylene resin powder Part 2: Continuous method)
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(Polypropylene resin powder Part 2: Continuous method)
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SH/T 1761.2-2019
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Basic data | Standard ID | SH/T 1761.2-2019 (SH/T1761.2-2019) | | Description (Translated English) | (Polypropylene resin powder Part 2: Continuous method) | | Sector / Industry | Petrochemical Industry Standard (Recommended) | | Classification of Chinese Standard | G32 | | Classification of International Standard | 83.080.20 | | Word Count Estimation | 8,851 | | Date of Issue | 2019-12-24 | | Date of Implementation | 2020-07-01 | | Issuing agency(ies) | Ministry of Industry and Information Technology | | Summary | This standard specifies the classification and nomenclature, requirements, test methods, inspection rules, signs and accompanying documents, packaging, transportation and storage of continuous polypropylene (PP) resin powder. This standard applies to the propylene homopolymer (PP-H) of powdery or (and) spherical particles obtained by continuous polymerization with propylene as raw material. | SH/T 1761.2-2019: (Polypropylene resin powder Part 2: Continuous method)---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
POLYPROPYLENE RESINS POWER-PART 2.CONTINUOUS PROCESS
Petrochemical Industry Standards of the People's Republic of China
SH/T 1761.2-2019
Published.2019~12~24
Implemented from 2020 to 07 to 01
Issued by the Ministry of Industry and Information Technology of the People's Republic of China
Foreword
This part was drafted in accordance with the rules given in GB/T 1 1 -2009.
SH/T 1761 «Polypropylene resin powder» is divided into the following parts.
This part is part 2 of SH/T 1761
This part was proposed by China Petrochemical Corporation
This part is under the jurisdiction of the Petrochemical Plastic Resin Products Branch of the National Plastics Standardization Technical Committee (SAC/TC15/SC1)
Responsible for drafting this section. China Petroleum & Chemical Corporation Beijing Beihua Institute Yanshan Branch, North Huajin Chemical Industry Group
Limited company
The main drafters of this section. Wang Chaoxian, Deng Yanxia, Liang Lihong, Wang Lihong, Xu Zefeng, Cai Chunfei, Guo Xi, Wang Yanlai, Zhang Qiang,
This standard is issued for the first time
SH/T 1761.2-2019
Polypropylene resin powder 1 Scope
This part specifies the classification and naming, requirements, test methods, inspection rules, markings and
Accompanying documents, packaging, transportation and storage.
This section applies to propylene homopolymers (PP-H) in powder form or (and) spherical particles obtained by continuous polymerization using propylene as raw material.
2 Normative references
The following documents are indispensable for the application of this document.For all dated reference documents, only the dated version applies to this document.
Documents The latest version (including all amendments) of undated reference documents is applicable to this document.
GB/T 10401-2018 Determination of tensile properties of plastics Part 1.General
GB/T 10403-2006 Determination of tensile properties of plastics Part 3.Test conditions for films and sheets
GB/T 1636-2008 Determination of the apparent density of plastics that can flow out of the specified funnel
GB/T 2412-2008 Determination of isotactic index of plastic polypropylene (PP) and propylene copolymer thermoplastic
GB/T 25461-2006 Plastic Polypropylene (PP) Molding and Extrusion Materials Part 1.Naming System and Classification Basis
GB/T 2547-2008 Plastic sampling method
GB/T 2918-2018 Standard environment for condition adjustment and testing of plastic samples
GB/T 36821-2018 Plastic thermoplastic melt mass flow rate (MFR) and melt volume flow rate (MVR)
Determination of Part 1.Standard Method
GB/T 3682.2-2018 Plastic thermoplastic melt mass flow rate (MFR) and melt volume flow rate (MVR)
Part 2.Test methods for materials sensitive to time-temperature history and/or humidity
GB 4806.6 Food Safety National Standard Food Contact Plastic Resin
GB/T 8170-2008 Numerical rounding rules and the expression and determination of limit values
GB/T 9345.1-2008 Determination of ash content of plastics Part 1.General methods
GB/T 9352-2008 Compression molding of plastic thermoplastic material samples
HG/T 3862-2006 Plastic Yellow Index Test Method
SH/T 1774-2012 Determination of isotactic index of plastic polypropylene. Low-resolution pulse nuclear magnetic resonance method
SH/T 1761.1-2019 Polypropylene resin powder Part 1.Batch method
3 Classification and naming
The classification and naming of continuous polypropylene resin powder shall be carried out in accordance with the provisions of GB/T 25461-2006 and shall be specified according to the characteristics of the powder
as follows.
4 requirements
4.1 For continuous polypropylene resin powder used in food contact, it should meet the requirements of GB 4806 6
4.2 The continuous process polypropylene resin powder is white powder or (and) spherical particles (shape after polymerization), no impurities, no agglomeration
4.3 Other technical requirements for continuous polypropylene resin powder are shown in Table 1.
5 Test method
5.1 Pretreatment of test samples
5.1.2 Dissolution method
5.1.2.1 Dissolve antioxidant 1010 in acetone (analytical grade) to prepare an antioxidant-acetone solution
5.1.2.2 Weigh a certain amount of sample in a weighing bottle and add the antioxidant-acetone solution to the sample in proportion to stir evenly until acetone
Use after the solvent has evaporated completely
Caution. Acetone is a flammable substance when volatilizing operation should be carried out in a fume hood
5.2 Preparation of compression molded test piece
Take the pre-processed test sample to prepare compression-molded test pieces containing spherical particles. The length and width of the test piece shall be at least
150mm thickness is 1
5.3 Standard environment for condition adjustment and test of samples
The condition of the sample is adjusted in accordance with the provisions of GB/T 2918-2018.The condition for the state adjustment is a temperature of 23°C ± 2°C, and the adjustment time is at least
40h but not more than 96h
The test should be carried out in the standard environment specified in GB/T 2918-2018.The ambient temperature is 23℃±2℃
5.4 Yellow Index
The yellow index is measured in accordance with HG/T 3862-2006
5.5 Melt mass flow rate (MFR)
Take the test sample pretreated according to 5.1.2 as the sample
The determination of MFR shall be carried out in accordance with the provisions of Method A or Method B in GB/T 3682.1-2018.Method A shall be used when the value of MFR is greater than
When 25g/10min, it is advisable to use method B to determine the mass flow rate of the melt. When the method B is used to determine the mass flow rate of the melt, the melt density value is 0.7386g/cm3 test strip
The piece is M (temperature. 230℃, load. 2.16kg), according to the requirements of GB/T 3682 2-2018, after cleaning the barrel and before loading the sample
Blow nitrogen for 5s~10s, nitrogen pressure 0.05MPa
5.6 Isotactic Index
5.6.1 Method A N-heptane reflux extraction method
According to the provisions of GB/T 2412-2008, select a perforated glass funnel with a drying temperature of 70°C and an extraction time of 6 hours.
The preparation of the sample of the spherical particles is carried out according to the method of the pellet sample. Method A is the arbitration method.
5.6.2 Method B NMR method
According to the provisions of SH/T 1774-2012, the preparation of samples containing spherical particles should be carried out according to method A.
SH/T 1761.2-2019
5.7 Ash
The ash content is determined in accordance with the method A (direct combustion method) in the GB/T 9345.1-2008 standard. The calcination temperature is 850℃±50℃.
5.8 Volatile matter
The determination of volatile matter shall be carried out in accordance with the provisions of Annex B of SH/T 1761 1-2019
5.9 Apparent density
The apparent density is measured according to GB/T 1636-2008, using B-type funnel
5.10 Chlorine content
The determination of chlorine content is carried out in accordance with the provisions of Annex A of SH/T 1761.
5.11 Tensile test
Use a punch knife to punch the sample from the compression-molded test piece prepared in accordance with 5.2 to shape it according to the provisions of 5.3...
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