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GB/T 21881-2015 English PDF

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GB/T 21881-2015: Acid dyes -- Determination of levelling properties
Status: Valid

GB/T 21881: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 21881-2015English129 Add to Cart 3 days [Need to translate] Acid dyes -- Determination of levelling properties Valid GB/T 21881-2015
GB/T 21881-2008English239 Add to Cart 2 days [Need to translate] Acid dyes -- Determination of levelling properties Obsolete GB/T 21881-2008

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Basic data

Standard ID GB/T 21881-2015 (GB/T21881-2015)
Description (Translated English) Acid dyes -- Determination of levelling properties
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G55
Classification of International Standard 71.100.01; 87.060.10
Word Count Estimation 6,635
Date of Issue 2015-05-15
Date of Implementation 2015-12-01
Older Standard (superseded by this standard) GB/T 21881-2008
Quoted Standard GB/T 1866-2012; GB/T 2374-2007; GB/T 2378-2012; GB/T 2379-2013; GB/T 6688-2008; GB/T 8170-2008
Regulation (derived from) National Standard Announcement 2015 No. 15
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 acid dye levelness. This Standard applies to acid dyes, acid complex dyes, neutral dye levelness measurement.

GB/T 21881-2015: Acid dyes -- Determination of levelling properties

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Acid dyes. Determination of levelling properties ICS 71.100.01; 87.060.10 G55 National Standards of People's Republic of China Replacing GB/T 21881-2008 Determination of dye Acid dye leveling Issued on. 2015-05-15 2015-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard replaces GB/T 21881-2008 "acid dye levelness determination", compared with the GB/T 21881-2008, in addition to editing Modifications outside the main technical changes are as follows. --- Remove the terminology and definitions chapter (Chapter 3 of the 2008 edition); --- Modify the principle of representation (see Chapter 3, Chapter 4 of the 2008 edition); --- Modify the dyeing conditions to determine the representation (see 61, 2008 version 6.1.); --- Modify the fabric and dyeing temperature (see Table 1, 63, 2008 edition of the table 1,6.3.); --- Rating modified visual representation (see 641, 2008 Edition 6.4.1.); --- Modify the contents of the test report (see Chapter 7, Chapter 7, 2008 edition). The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee Dye (SAC/TC134) centralized. This standard was drafted. Wang Jinhua double-Chemical Co., dye State Quality Supervision and Inspection Center, Shenyang Chemical Research Institute Co., Ltd. The main drafters of this standard. Xu Jiancheng, Yangzhen Mei, Zhang Guodong, Kiran piano. This standard replaces the standards previously issued as follows. --- GB/T 21881-2008. Determination of dye Acid dye leveling

1 Scope

This standard specifies the method for the determination of acid dye levelness. This standard applies to acid dyes, acid complex dyes, neutral dye levelness measurement.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. Determination of GB/T 1866-2012 neutral dyeing shade and relative strength General conditions GB/T 2374-2007 Determination of dyes provisions Determination of GB/T 2378-2012 acid dyes shade and intensity Determination of GB/T 2379-2013 acid complex dyes shade and intensity Determination of GB/T 6688-2008 relative dye strength and color of the instrumental method GB/T 8170-2008 revised value represents about rules and limit values \u200b\u200band judgment Principle 3 After the optimum temperature dyeing dye, the first piece of fabric before dyeing into 20min, then put together a second fabric dyeing, under subsection Two dye color yield kind of depth control scale for evaluating or measuring levelness.

4 Reagents and materials

The reagents used should be consistent with GB/T 2374-2007 the provisions of Chapter 3. 5. Apparatus The equipment shall comply with GB/T 2374-2007 in Chapter 4. a) analytical balance. a sense of not more than 0.0001g; b) laboratory dyeing machine; c) color measurement instrument. comply with the relevant provisions of GB/T 6688-2008 of.

6 measuring step

6.1 determining staining condition There are product standards, the use of the product standard dyeing conditions of shade and intensity measurement requirements. No product standards, can be all kinds of dye Shade dyeing conditions and material strength measurement method prescribed acid dye according to GB/T 2378-2012 in the relevant provisions of the acidic dye complex Press materials GB/T 2379-2013 relevant provisions of neutral dyes according to GB/T 1866-2012 the relevant provisions. Product more special, all types

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