GB/T 2916-2007 English PDF

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GB/T 2916-2007: Plastic -- Vinyl chloride homopolymer and copolymer resins -- Sieve analysis using air-jet sieve apparatus
Status: Valid

GB/T 2916: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 2916-2007	159	Add to Cart	3 days	Plastic -- Vinyl chloride homopolymer and copolymer resins -- Sieve analysis using air-jet sieve apparatus	Valid
GB/T 2916-1997	279	Add to Cart	3 days	Plastics--Vinyl chloride homopolymer and copolymer resins--Sieve analysis using air-jet sieve apparatus	Obsolete
GB/T 2916-1982	RFQ	ASK	3 days	Test method for sieve analysis of polyvinyl chloride resins	Obsolete

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GB/T 4615   GB/T 1843   GB/T 1043.1   GB/T 1630.2   GB/T 2915   GB/T 2914   

Basic data

Standard ID: GB/T 2916-2007 (GB/T2916-2007)
Description (Translated English): Plastic -- Vinyl chloride homopolymer and copolymer resins -- Sieve analysis using air-jet sieve apparatus
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G32
Classification of International Standard: 83.080.20
Word Count Estimation: 6,638
Date of Issue: 2007-08-13
Date of Implementation: 2008-02-01
Older Standard (superseded by this standard): GB/T 2916-1997
Adopted Standard: ISO 4610-2001, MOD
Regulation (derived from): China National Standard Approval Announcement2007 No.8 (Total No.108)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the " suspension ", " body " and " emulsion" polymerization process to produce vinyl chloride homopolymer and easy flow measurement method copolymer resin sieve residue and particle size distribution. Control of these features help ensure consistent and predictable feed processing performance.

GB/T 2916-2007: Plastic -- Vinyl chloride homopolymer and copolymer resins -- Sieve analysis using air-jet sieve apparatus

---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.
Plastic. Vinyl chloride homopolymer and copolymer resins. Sieve analysis using air-jet sieve apparatus ICS 83.080.20 G32 National Standards of People's Republic of China Replacing GB/T 2916-1997 Plastics - Vinyl chloride homopolymer and copolymer resins Sieve analysis using air - jet sieve apparatus (ISO 4610.2001, MOD) Posted 2007-08-13 2008-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This revised standard adopts ISO 4610.2001 "Plastics - Vinyl chloride homopolymer and copolymer resins with an air jet sieve apparatus sieve analysis" (English Version) (September 22, 2006 confirmation). This standard is based on ISO 4610.2001 re-drafting, its main technical differences are as follows. --- Increased antistatic agent size requirements (Chapter 5 of this standard); --- Increasing the parallel determination of deviation and associated requirements (Chapter 8 of this standard); --- Remove the "precision" chapter (ISO 4610. Chapter 9 in 2001). For ease of use, this standard made the following editorial changes. a) "this International Standard" be replaced by "this standard"; b) use a decimal point instead of a decimal comma ",". ","; c) Remove the preface to the international standards. This standard replaces GB/T 2916-1997 "vinyl chloride homopolymer and copolymer resins by means of an air jet sieve sieve analysis." This standard compared with GB/T 2916-1997 The main changes are as follows. --- Added "sampling" chapter, and in this particular fine particle size range given resin (Chapter 4 of this edition); --- Deleted (Chapter 1997 4th Edition) chapter "sample"; --- Added "sample preparation" (Chapter 5 edition) chapter; --- Added a sieve residue less when it is necessary to extend the screening time requirements (Chapter 7 edition); --- Test report adds five requirements (Chapter 8, 1997; Chapter 9 edition); --- The amount of added antistatic agent mass fraction of the original increase of 0.1% to 0.5% (1997 Edition Chapter 4; Chapter 5 edition); --- Remove the extended time when sieved particle size distribution test requirements (1997 version 6.3). The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee of plastic PVC resin product Club (SAC/TC15/SC7) centralized. This standard was drafted. Jinxi Chemical Industry Research Institute, Hubei Yihua Group Limited Liability Company. The main drafters of this standard. Chenpei Yun, Lijuan, Hao Jing, Yaocai Li, Qi Yulin. This standard was first published in 1982, the first revision in 1997. Please note that some of the content of this standard may involve patents, the issuing authority of this standard should not bear the responsibility to identify these patents. Plastics - Vinyl chloride homopolymer and copolymer resins Sieve analysis using air - jet sieve apparatus

1 Scope

This standard specifies the "suspension", "body" and "emulsion" polymerization process flows easily produced vinyl chloride homopolymer and copolymer resins sieve Determination of residue and particle size distribution, and control of these features help to ensure consistent and predictable feed processing performance.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 6005 Test sieves - Metal wire cloth, perforated plate and basic dimensions electroformed sheet mesh (GB/T 6005-1997, eqv ISO 565.1990)

3 Terms and Definitions

The following terms and definitions apply to this standard. 3.1 After the test, the resin remaining on the sieve to represent the mass fraction.

4 sampling

Sample shipments of the resin from a representative, the sample was sufficient to remove the resin particle size distribution measurement. Typically each screening should use 25g. For (80 to 100) fine particle resin μm between the application of this standard, use a small amount of trees Fat, such as 10g.

5 sample preparation

Unless otherwise specified, the sample is received assay (ie delivered). If the sample is not the date of receipt of the analysis should be stored in an airtight container at room temperature in. To prevent static electricity caused by the resin screening difficult, antistatic agents may be added in the resin, such as a mass fraction of 0.5% large particle size Sieve aperture on γ- alumina. Unless otherwise specified, an antistatic agent should be added at the beginning of the analysis into the resin.

6 Instruments

6.1 sieve, round, screen surface diameter of 200mm. Each sieve frame and mesh made of metal. Screen according to GB/T 6005 regulations. It should be based on the measured particle size distribution resin requirements and selection sieve apertures. Note. A suitable method is the use of ultrasonic cleaning sieve cleaning device containing water and cleaning agents. 6.2 air jet sieve (see Fig. 1) by receiving a sieve (6.1) consisting of a box, at the bottom there is an outlet for suction and a Air inlet. Box with a transparent cover is preferably covered. The air inlet is equipped with a rotary injector, the injector is immediately below the screen by the radial arrangement of the slit nozzle arrangement, when it rotates When discharged to air continuously through a sieve, so that the particles remain in suspension. ......

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