GB/T 15223-2008 English PDF

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GB/T 15223-2008: Plastics -- Liquid resins -- Determination of density by the pycnometer method
Status: Valid

GB/T 15223: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 15223-2008	94	Add to Cart	3 days	Plastics -- Liquid resins -- Determination of density by the pycnometer method	Valid
GB/T 15223-1994	199	Add to Cart	2 days	Plastics--Liquid resins--Determination of density by the pyknometer method	Obsolete

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Basic data

Standard ID: GB/T 15223-2008 (GB/T15223-2008)
Description (Translated English): Plastics -- Liquid resins -- Determination of density by the pycnometer method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G31
Classification of International Standard: 83.080.01
Word Count Estimation: 5,535
Date of Issue: 2008-09-04
Date of Implementation: 2009-04-01
Older Standard (superseded by this standard): GB/T 15223-1994; GB/T 12007.5-1989
Adopted Standard: ISO 1675-1985, IDT
Regulation (derived from): National Standard Approval Announcement 2008 No.14 (Total No.127)
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 use of a liquid resin density pycnometer method. This standard applies to the determination of low viscosity and medium viscosity liquid resin density. Can also be used for high viscosity resins, but have difficulty in operation.

GB/T 15223-2008: Plastics -- Liquid resins -- Determination of density by the pycnometer 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.
Plastics. Liquid resins. Determination of density by the pyknometer method ICS 83.080.01 G31 National Standards of People's Republic of China GB/T 15223-2008/ISO 1675. 1985 Replacing GB/T 15223-1994, GB/T 12007.5-1989 Liquid plastic resin Determination of density by pycnometer method (ISO 1675. 1985, IDT) Posted 2008-09-04 2009-04-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard is identical with ISO 1675. 1985 "Plastics --- --- liquid resin density was measured using a pycnometer Law" (in English). For ease of use, this standard made the following editorial changes. a) to the "international standards" be replaced by the "Standard" or "GB/T 15223"; b) Delete the ISO 1675. 1985 Foreword; c) increasing the preface of this standard; d) use of decimal notation. "" instead of the international standard decimal symbol "." This standard replaces GB/T 15223-1994 "liquid resin density measuring method Pyknometer" and GB/T 12007.5-1989 "Epoxy Density Determination pycnometer method", the GB/T 12007.5-1989 content included in this standard. This standard compared with GB/T 15223-1994, the main technical content changes as follows. a) Change the standard name; b) increase the definition, directory, foreword; c) Remove the instrument in an oven; d) Remove the allowable difference; e) expanding the GB/T 12007.5-1989 the scope. The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee plastic universal methods and products Club (SAC/TC15/SC4) centralized. This standard is drafted by. National Quality Supervision and Inspection Center of synthetic resin, Hangzhou Normal University. Participated in the drafting of this standard. Beijing Yanshan Petrochemical resin, National Petrochemical organic synthetic resin raw material quality inspection center, Guangzhou blond technology CO., LTD. The main drafters of this standard. Zheng Ning, Jiang Jianxiong, Song Guirong, Chen is willing, Li Jianjun, Wang Chao first. This standard replaces the previous standard version of the case. --- GB/T 15223-1994; --- GB/T 12007.5-1989. GB/T 15223-2008/ISO 1675. 1985 Liquid plastic resin Determination of density by pycnometer method

1 Scope

This standard specifies the use of a pycnometer liquid resin density measurement method. This standard applies to the determination of low viscosity and medium viscosity liquid resin density, high viscosity resins may also be used, but there is in operation difficult.

2 Terms and definitions

The following terms and definitions apply to this standard. 2.1 Mass divided by the volume in grams per milliliter (g/mL). Principle 3 Mass measuring device in a known volume of the pycnometer resin at 23 ℃ when.

4 Instrument

4.1 pycnometer. For a precise scale of the flask. Tick \u200b\u200babove the neck height of not more than 50mm. Pycnometer at 23 ℃ ± 0.1 ℃ Calibration registration to 1/10000 volume should be measured. It is through this temperature distilled water in the pycnometer Quality is measured (see Chapter 6 of the note). Pycnometer commonly used has characteristics shown in Table 1. Table 1 Characteristics of pycnometer 100 ± 0.1 50 ± 0.05 13 ± 1 11 ± 1 4.2 Funnel. Funnel its inner diameter should be as large as possible, into the funnel tube should just pycnometer mark. 4.3 Balance. dividing the value of 0.2mg. 4.4 water bath. to maintain at 23 ℃ ± 0.1 ℃. 4.5 fine filter paper. 4.6 transparent conical flask. wide mouth (for example Erienmeyer s), with a stopper, the volume of 200mL ~ 600mL.

5 Steps

Prepare resin 5.1 At least 150g of the resin into the conical flask (4.6), check the conical flask resin without bubbles. If you observe the bubble, with the plug Erlenmeyer flask place long enough to make all the bubbles disappear. After placing or placed at the same time it is immersed in a water bath (4.4) in order to Erlenmeyer flask and make them pitch control in 23 ℃ ± 0.1 ℃. NOTE. In order to accelerate the discharge of bubbles, especially close to the sidewall of the bubble, the application of a thin wire through the narrow neck flasks agitated or poke them. GB/T 15223-2008/ISO 1675. 1985 ......

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