GB/T 9348-2008 English PDF

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GB/T 9348-2008: Plastics -- Poly (vinyl chloride) resins -- Determination of number of impurities and foreign particles
Status: Valid

GB/T 9348: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 9348-2008	189	Add to Cart	3 days	Plastics -- Poly (vinyl chloride) resins -- Determination of number of impurities and foreign particles	Valid
GB/T 9348-1988	199	Add to Cart	2 days	Determination of number of impurities and foreign particles of polyvinyl chloride resins	Obsolete

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GB/T 10801.1   GB/T 9345.1   GB/T 8812.1   GB/T 9345.5   GB/T 9345.2   

Basic data

Standard ID: GB/T 9348-2008 (GB/T9348-2008)
Description (Translated English): Plastics -- Poly (vinyl chloride) resins -- Determination of number of impurities and foreign particles
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G32
Classification of International Standard: 83.080.20
Word Count Estimation: 8,885
Date of Issue: 2008-05-15
Date of Implementation: 2008-11-01
Older Standard (superseded by this standard): GB/T 9348-1988
Adopted Standard: ISO 1265-2007, MOD
Regulation (derived from): National Standard Approval Announcement 2008 No.8 (Total No.121)
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 the determination of impurities and foreign particles on the surface of expanded polyvinyl chloride resin. As the particles with resin paste too small, this method is not used for the determination of resin paste.

GB/T 9348-2008: Plastics -- Poly (vinyl chloride) resins -- Determination of number of impurities and foreign particles

---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.
Plastics. Poly (vinyl chloride) resins. Determination of number of impurities and foreign particles ICS 83.080.20 G32 National Standards of People's Republic of China Replacing GB/T 9348-1988 Plastic polyvinyl chloride resin Determination of number of impurities and foreign particles (ISO 1265.2007, MOD) Posted 2008-05-15 2008-11-01 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 1265.2007 (E) "Plastics - Determination of impurities and foreign particles of polyvinyl chloride resin Number" (in English). This standard is based on ISO 1265. redraft 2007 (E), and its main technical differences are as follows. --- ISO 1265.2007 (E) counts a predetermined size greater than 0.250mm impurities, this standard requires visual counting visible impurities, according to This removes the associated "Note 2" and "2." For ease of use, this standard made the following editorial changes. a) "this International Standard" be replaced by "this standard"; b) Remove the preface to the international standards. This standard replaces GB/T 9348-1988 "Determination of impurities polyvinyl chloride resin and the number of particles of foreign matter." This standard and the former version of the standard main technical differences. --- Instrument increases the timer (edition 3.3); --- Of Procedure was revised (1988 edition Chapter 4, Chapter 4 edition); --- The results expressed modified (1988 edition Chapter 5, Chapter 5 edition); --- Added Appendix A "count the number of impurities (impurities and foreign particles) and the results are shown in the logic diagram." Appendix A of this standard is an informative annex. 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, China Petrochemical Qilu chlor-alkali plant, Sichuan Jinlu Resin Co., Ltd. The main drafters of this standard. Chenpei Yun Hao Jing, Sun Lijuan, Dihuai Ji Zhou Yau expensive. This standard was first published in 1988. 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. Plastic polyvinyl chloride resin Determination of number of impurities and foreign particles

1 Scope

This standard specifies the method for determining the number of impurities and foreign particles in the surface of the expanded polyvinyl chloride resin. Since the particle paste resin too thin, this method is not used for the determination of the resin paste. Principle 2 Between the amount of resin in a rigid plate (with a white glossy paper cover) and a glass plate with a grid and flatten, count 25 squares visible in the number of impurities and foreign particles. Results by extrapolation expressed per 100 square point of impurities (impurities and foreign particles) number.

3 Instrument

3.1 glass plate, 340mm × 340mm × 4.5mm, colorless, transparent, no defects scratches, bubbles, black spots like 1). 1) If the defect is taken into account in the detection count. In the center of the glass sheet, the 100 is a 30mm × 30mm squares consisting of 300mm × 300mm grid. Grid Network can use indelible pencil, diamond or other suitable tool does not contact the resin side of the draw. 3.2 Hard Tablet. 450mm × 450mm, covered with a white glossy paper. 3.3 Timer (eg stopwatch).

4 steps

Spread about 200mL (1cm3 = 1mL) in rigid plate (3.2) on a sample. The glass plate (3.1) is pressed against the sample, gently move the glass sheet, to expand the sample so that the sample contact area with the glass plate in at least 25 Square or more, preferably in the center of the glass. With a dark pencil mark 25 selected grid limits (Figure 1). ......

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