GB/T 21990-2008 English PDF

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GB/T 21990-2008: Polyvinyl chloride (PVC) pastes -- Determination of fineness of grind
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 21990-2008	149	Add to Cart	2 days	Polyvinyl chloride (PVC) pastes -- Determination of fineness of grind	Valid

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Basic data

Standard ID: GB/T 21990-2008 (GB/T21990-2008)
Description (Translated English): Polyvinyl chloride (PVC) pastes -- Determination of fineness of grind
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G32
Classification of International Standard: 83.080.20
Word Count Estimation: 5,522
Date of Issue: 2008-06-04
Date of Implementation: 2008-12-01
Older Standard (superseded by this standard): GB/T 12004.5-1992
Regulation (derived from): National Standard Approval Announcement 2008 No.9 (Total No.122)
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 method for determination of PVC paste with coarse particle fineness meter. This standard applies to the determination of PVC paste coarse particle size.

GB/T 21990-2008: Polyvinyl chloride (PVC) pastes -- Determination of fineness of grind

---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.
Polyvinyl chloride (PVC) pastes. Determination of fineness of grind ICS 83.080.20 G32 National Standards of People's Republic of China Replacing GB/T 12004.5-1992 Determination of polyvinyl chloride (P Vp C) paste scraper fineness Posted 2008-06-04 2008-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard replaces GB/T 12004.5-1992 "PVC plastisol determination scraper fineness." This standard and GB/T 12004.5-1992 main technical differences are as follows. --- Modify the standard name; --- Increased (Chapter 3 edition) chapter "Terms and Definitions"; --- Delete specific provisions of Fineness gauge (1992 version 3.1 and 3.2). 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. The main drafters of this standard. Lijuan, Tan Chen, Hao Jing, Chen Peiyun. This standard was first published in 1992. 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. Determination of polyvinyl chloride (P Vp C) paste scraper fineness

1 Scope

This standard specifies the method for the determination of particle size of PVC paste coarse grind with a scraper. This standard applies to the determination of PVC paste coarse particle size. Principle 2 PVC paste is placed on the measuring device, scratches appear by moving the blade, testing PVC paste coarse particle size.

3 Terms and Definitions

The following terms and definitions apply to this standard. 3.1 Resin in an organic liquid of a uniform dispersion.

4 Instrument

4.1 Fineness gauge by the measuring device and the blade (see Figure 1). Should be selected according to the measured resin particle size and scope. Millimeters a) measuring b) scraper

1 Fineness gauge schematic diagram

5 measuring step

5.1 The measuring device with a clean silk, placed on a horizontal surface. 5.2 sufficient amount of PVC paste slowly poured measuring chute deep end so a little overflow chute. 5.3 hands clenched scraper, placed vertically at the edge of the sample measuring the deep end of the chute, scraper blade and the width measuring device parallel to ensure that the blade and the ......

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