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GB/T 35934-2018: Cotton -- Test method for differential dyeing behavior
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Cotton -- Test method for differential dyeing behavior
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GB/T 35934-2018
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Basic data | Standard ID | GB/T 35934-2018 (GB/T35934-2018) | | Description (Translated English) | Cotton -- Test method for differential dyeing behavior | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | W04 | | Classification of International Standard | 59.060.01 | | Word Count Estimation | 10,144 | | Date of Issue | 2018-02-06 | | Date of Implementation | 2018-09-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 35934-2018: Cotton -- Test method for differential dyeing behavior---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.
Cotton-Test method for differential dyeing behavior
ICS 59.060.01
W04
National Standards of People's Republic of China
Cotton color difference test method
Published on.2018-02-06
2018-09-01 Implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Administration released
Directory
Preface III
Introduction IV
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Principle 1
5 Reagents and Materials 1
6 Instruments and apparatus2
7 Test method 2
7.1 Sample Preparation 2
7.2 Test Step 2
7.3 Chromatic aberration test 3
8 Test report 3
Appendix A (Normative) Assessment Method for Cotton Fiber Dyeing Performance 4
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
Please note that some of the contents of this document may involve patents. The issuing agency of this document does not assume responsibility for identifying these patents.
This standard is proposed and managed by the National Fiber Standardization Technical Committee (SAC/TC513).
This standard was drafted by. Hubei Provincial Fiber Inspection Bureau, China Textile Standard Inspection & Certification Co., Ltd., Wuhan Textile University, and Jingzhou City Jiahe Printing and Dyeing
Limited company.
The main drafters of this standard are. Yonghui Yong, He Li, Dai Zhifang, Chen Chunmei, Song Congshan, Wu Jianchun, Chen Yiren, Li Juan, and Wang Feng.
Introduction
Raw cotton is affected by factors such as origin, season, and environment in its production process. It will produce differences in fiber quality such as maturity and other indicators.
The instability of the dyeing performance leads to problems such as uneven color brightness, poor color yield, uneven dyeing, and the like. This standard is based on cotton
The correlation between fiber maturation and dyeing color difference establishes the grade grade of dyeing color difference, which is suitable for cotton dyeing and color difference analysis in the textile industry.
Textile companies have important guiding significance in purchasing cotton raw materials.
Cotton color difference test method
1 Scope
This standard specifies the test methods for the dyeing properties of cotton.
This standard applies to all types of cotton fibers (except colored cotton), as well as the use of cotton fibers as the material of natural yarns and grey fabrics.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB/T 3979 Object Color Measurement Method
GB/T 4668 Determination of Density of Woven Fabrics
GB/T 6099 Cotton Fiber Maturation Coefficient Test Method
GB/T 6682 Analysis Laboratory Water Specifications and Test Methods
GB/T 6688 Determination of relative intensity and chromatic aberration of dyes
GB/T 29887 dyed cotton
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Color difference differentialdyeingbehavior
Due to different conditions such as place of production, variety, maturity, etc., cotton fibers have different surface colors and changes after dyeing.
3.2
Maturity coefficient
The index indicating the maturity of cotton fiber refers to the ratio of the thickness of the middle section of the cotton fiber to the ratio of the outer diameter to the outer diameter of the middle section of the cotton fiber.
The larger the maturity coefficient, the more accurate the fiber is.
3.3
D65 light source artificialdaylight6500K
The most commonly used artificial sunlight in standard light sources has a color temperature of 6500K. The D65 light source in the standard light source box simulates artificial daylight.
In order to observe the color effect of an object indoors or on a rainy day, there is an illumination effect similar to that observed under sunlight.
4 Principle
The sample is placed in a certain bath ratio of red and green mixed dye solution, under the specified conditions for dyeing, after washing and drying to observe the cotton fiber
The color distribution of the dimension is compared with that of a cotton sample with known dyeing properties, and the color difference of cotton dyeing is evaluated.
5 Reagents and materials
5.1 CI Direct Red 81 (CAS number. 2610-11-9), red dye stock solution (0.5 g/100 mL).
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