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SN/T 1513-2005 English PDF

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SN/T 1513-2005: Determination of the density for polyethylene resin and polypropylene resin. Method of standing still in the centre of immersion liquid at atmospheric temperature
Status: Valid
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SN/T 1513-2005English229 Add to Cart 3 days [Need to translate] Determination of the density for polyethylene resin and polypropylene resin. Method of standing still in the centre of immersion liquid at atmospheric temperature Valid SN/T 1513-2005

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Basic data

Standard ID SN/T 1513-2005 (SN/T1513-2005)
Description (Translated English) Determination of the density for polyethylene resin and polypropylene resin. Method of standing still in the centre of immersion liquid at atmospheric temperature
Sector / Industry Commodity Inspection Standard (Recommended)
Classification of Chinese Standard G32
Classification of International Standard 83.080
Word Count Estimation 7,721
Date of Issue 2005-02-17
Date of Implementation 2005-07-01
Quoted Standard ISO 293; ASTM D1238; ASTM D1928; ASTM D2839
Adopted Standard ASTM D792, NEQ; ASTM D1505, NEQ; ISO 1183, NEQ
Regulation (derived from) Industry standard filing Notice 2005 No. 4 (No. 64 overall)
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China
Summary This standard specifies the polyethylene and polypropylene resin density measured at atmospheric temperature setting method. This standard applies to low-density polyethylene, high density polyethylene and polypropylene resin density.

SN/T 1513-2005: Determination of the density for polyethylene resin and polypropylene resin. Method of standing still in the centre of immersion liquid at atmospheric temperature


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Determination of the density for polyethylene resin and polypropylene resin. Method of standing still in the centre of immersion liquid at atmospheric temperature Book of the People's Republic of China Entry and Exit Inspection and Quarantine Determination of density of polyethylene and polypropylene resins Normal temperature floatation Released on.2005-02-17 2005-07-01 implementation People's Republic The General Administration of Quality Supervision, Inspection and Quarantine issued

Foreword

This standard and domestic and foreign standards for the determination of thermoplastic density ASTM D792, ASTM D1505, ISO 1183, GB 1033 standard The significant differences are as follows. --- This standard stipulates that the sample density is measured at normal room temperature and then converted to the nominal density at 23 ° C; --- This standard provides the density-temperature coefficient of low density polyethylene, high density polyethylene and polypropylene resin at 15 ° C ~ 31 ° C. This standard is proposed and managed by the National Certification and Accreditation Administration. This standard was drafted. Shanghai Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China. The main drafters of this standard. Kong Zhuyao, Dong Jianhua, Shen Wei. This standard is the first industry standard for entry-exit inspection and quarantine.

Introduction

The issuing body of this standard draws attention to the fact that when the statement conforms to this standard, it can be used in relation to “b--- Density-temperature coefficient at 15 ° C to 31 ° C. HDPE 15 ° C ~ 31 ° C is -0.00045g · cm-3 · ° C-1; LDPE 15 ° C ~ 31 ° C is -0.00070 g · cm-3 · ° C-1; The related patent of PP15°C～31°C is -0.00030g·cm-3·°C-1”, patent number. 02111273.8. The issuing body of this standard does not give any opinion on the scope, validity and verification of patents. The patent holder has assured the issuing authority of this standard that he is willing to work with any applicant on reasonable and non-discriminatory terms and conditions. Negotiate with an authorized license. In this regard, the patent holder's statement has been filed with the issuing authority of this standard. Relevant information Available from the following address. Patentee. Shanghai Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China Service inventor. Kong Zhuyao Address. No. 1208, Minsheng Road, Shanghai Please note that in addition to the patents identified above, some of the contents of this standard may involve patents. The issuing body of this standard should not Responsible for identifying these patents. Determination of density of polyethylene and polypropylene resins Normal temperature floatation

1 Scope

This standard specifies the normal temperature floatation determination method for the density of polyethylene and polypropylene resin. This standard applies to the density determination of low density polyethylene, high density polyethylene and polypropylene resin.

2 Normative references

The terms in the following documents become the terms of this standard by reference to this standard. Any reference to the year, followed by Modifications (not including errata content) or revisions do not apply to this standard, however, parties to agreements based on this standard are encouraged to study Is it possible to use the latest version of these files? For the reference documents that do not date, the latest edition applies to this standard. ISO 293 Plastics - Compression Molding Thermoplastic Specimens ASTMD1238 extrusion plastometer for measuring the flow rate of thermoplastics ASTMD1928 Standard Method for Molding Polyethylene Test Specimens and Specimens ASTMD2839 Standard Method for Determining Polyethylene Density Using Melt Index Splines

3 Abbreviations

The following abbreviations apply to this standard. 3.1 3.2 3.3

4 Determination method

4.1 Principle According to the buoyancy principle of Archimedes, the sample is immersed in the immersion liquid. When the density of the immersion liquid is greater than the density of the sample, the sample is in the immersion liquid. Going up, otherwise sinking. When the sample is in a floating state that does not rise or sink in the immersion liquid at a certain temperature, the density of the immersion liquid That is, the density of the sample at this temperature. Then, using the density-temperature coefficient, the density measured at this temperature is converted to a prescribed temperature of 23 ° C. The density underneath. 4.2 Reagents 4.2.1 Isopropanol, analytically pure. 4.2.2 Distilled water to remove carbon dioxide. 4.3 Main instruments 4.3.1 Glass container, 250 mL beaker with a diameter of 60 mm. 4.3.2 Precision density meter or instrument capable of measuring liquid density, accurate to 0.0001g/cm3. 4.3.3 Thermometer, 0 ° C ~ 50 ° C, the division value of 0.1 ° C.

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