GB/T 21862.4-2008 English PDF

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GB/T 21862.4-2008: Paints and varnishes -- Determination of density -- Part 4: Pressure cup method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 21862.4-2008	174	Add to Cart	3 days	Paints and varnishes -- Determination of density -- Part 4: Pressure cup method	Valid

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Basic data

Standard ID: GB/T 21862.4-2008 (GB/T21862.4-2008)
Description (Translated English): Paints and varnishes -- Determination of density -- Part 4: Pressure cup method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: A80
Classification of International Standard: 13.300
Word Count Estimation: 9,987
Date of Issue: 2008-05-12
Date of Implementation: 2008-09-01
Quoted Standard: GB/T 3186-2006; GB/T 20777-2006; ISO 3696-1987
Adopted Standard: ISO 2811-4-1997, IDT
Regulation (derived from): Announcement of Newly Approved National Standards 2008 No. 8 (No. 121 overall)
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 pressure cup method paints, varnishes and related products density approach. This method is applicable to samples containing bubbles, such as emulsion paints often contain small air bubbles and these bubbles remain in the determination of the density.

GB/T 21862.4-2008: Paints and varnishes -- Determination of density -- Part 4: Pressure cup 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.
. Paints and varnishes Determination of densit Part 4. Pressure cup method ICS 13.300 A80 National Standards of People's Republic of China GB/T 21862.4-2008/ISO 2811-4.1997 Paints and varnishes - Determination of density Part 4. Pressure cup method (ISO 2811-4.1997, IDT) Posted 2008-05-12 2008-09-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 21862 "Paints and varnishes - Determination of density" includes the following four parts. --- Part 2. Falling Ball Method; --- Part 3. vibration method; --- Part 4. Pressure cup method; --- Part 5. hydrometer method. This is Part 4 GB/T 21862 of. This section is equivalent to using the ISO 2811-4.1997 "Paints and varnishes - Determination of density - Part 4. Pressure cup method" (in English). This part of ISO 2811-4.1997 compared to do the following editorial changes. --- With "this Part" instead of "ISO 2811 part of this"; --- Use has been tantamount to the adoption of national standards instead of into the corresponding international standards or foreign standards; "." --- With a decimal point instead of a comma as the decimal point, ""; --- Delete international standards foreword. GB/T 21862 "Paints and varnishes - Determination of density," the relevant standards. GB/T 6750-2007 test "Paints and varnishes density Given pycnometer method "(ISO 2811-1.1997, IDT). Appendix A of this section is normative appendix, Appendix B is an informative annex. This part of the National Chemicals Management Standardization Technical Committee dangerous (SAC/TC251) and focal points. This section is responsible for drafting. Jiangsu Entry-Exit Inspection and Quarantine Bureau. Participated in the drafting of this section. the Chemical Institute of Standardization, Marine Chemicals Research Institute, China National Chemical Construction Corporation of Changzhou coating Power Research Institute. The main drafters of this section. Wang Hongsong, Wang Xiaobing, Chen Wei, Mao Leilei, Wei Feng, Zhou Zhirong, Zhao Ling. This section is the first release. GB/T 21862.4-2008/ISO 2811-4.1997 Paints and varnishes - Determination of density Part 4. Pressure cup method

1 Scope

This section provides a method for determining the pressure cup Paints, varnishes and related products density. This method is applicable to samples containing air bubbles, such as emulsion paints often contain small air bubbles and these bubbles still in the determination of density exist.

2 Normative references

The following documents contain provisions which, through reference GB/T 21862 in this section constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB/T 3186-2006 Paints, varnishes and raw materials for paints and varnishes - Sampling (ISO 15528.2000, IDT) GB/T 20777-2006 Paints and varnishes examination and preparation of samples (ISO 1513.1992, IDT) ISO 3696. 1987 laboratory use - Specification and test methods

3 Terms and Definitions

The following terms and definitions apply to this section. 3.1 The ratio of material quality and volume, expressed in grams per milliliter (g/mL). Principle 4 The sample is compressed in a cylindrical pressure cup to eliminate measurement errors in the sample is not divisible by air bubbles arising. Dense samples Degree can pressure cup quality and volumes calculated.

5 Temperature

5.1 relative filling properties, the effect of temperature on the density is large, and with the product type. 5.2 part of the provisions of 23 ℃ ± 0.5 ℃ as the standard temperature. In some specific cases, it can be recognized by the other temperature measurement, such as 20 ℃ ± 0.5 ℃ (see Appendix B). 5.3 throughout the test, the sample cup and pressure should be maintained at a specific temperature, and should ensure that throughout the course of the experiment, the temperature The change does not exceed 0.5 ℃.

6 Instruments

Routine laboratory equipment and glassware and the following instruments. 6.1 Pressure Cup Comprising a hollow cylinder, a piston screw, a top lid can release the pressure with the bottom (FIG. 1 GB/T 21862.4-2008/ISO 2811-4.1997 ......

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