GB/T 9337-2001 Determination of color uptake of disperse dyes at high temperature

This standard specifies the determination method of the color uptake rate and relative color uptake rate of disperse dyes on polyester fibers at high temperature. This standard is applicable to the determination of the color uptake rate and relative color uptake rate of disperse dyes on polyester fibers at high temperature. GB/T 9337-2001 Determination method of color uptake rate of disperse dyes at high temperature GB/T9337-2001 Standard download decompression password: www.bzxz.net

ICS87.060.10
National Standard of the People's Republic of China
GB/T 9337—2001
Determination of dye-uptake of disperse dyestuffs at high temperature dyeing
Published on July 13, 2001
General Logistics Department of Quality Supervision, Inspection and Quarantine of the People's Republic of China
Implemented on February 1, 2002
GB/T9337—2001
This standard is a revision of the recommended national standard GB/T9337—1988 "Determination of relative dye uptake of disperse dyestuffs at high temperature dyeing".
The main differences between this standard and GB/T9337—1988 are: 1. The content of the determination method of disperse dyestuffs at high temperature dyeing is supplemented. This standard shall replace GB/T9337-1988 from the date of implementation. This standard is proposed by the State Bureau of Petroleum and Chemical Industry. This standard is under the jurisdiction of the National Technical Committee on Dye Standardization. The drafting units of this standard are: Shenyang Chemical Research Institute, Tianjin Dye Research Institute. The main drafters of this standard are: Ji Lanqin, Shen Rijiong, Liu Renxiang, Wang Jingwen. This standard was first issued in 1988.
This standard is interpreted by the National Technical Committee on Dye Standardization. I
1 Scope
National Standard of the People's Republic of China
Determination of dye-uptake of disperse dyestuffs at high temperature dyeing
GB/T9337-2001
Replaces GB/T9337-1988
This standard specifies the determination method of the dye-uptake and relative dye-uptake of disperse dyestuffs at high temperature dyeing on polyester fibers. This standard applies to the determination of the uptake and relative uptake of disperse dyes on polyester fibers at high temperature. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T2374-1994 General conditions for dyeing determination GB/T6688-1986 Instrumental method for determination of relative strength of dyes 3 Terms and symbols
Uptake: The ratio of the amount of dye dyed on the fiber at a certain moment in the dyeing process to the total amount of dye put into the dye bath. Symbol: F (%)
Relative uptake: The ratio of the amount of dye dyed on the fiber at a certain moment in the dyeing process to the amount of dye on the final dye sample under normal dyeing conditions.
Symbol: 8(%)
4 Method summary
This standard recommends the use of the transmission method to determine the uptake of disperse dyes at high temperature. This standard recommends the use of transmission and reflection methods to determine the relative coloring rate of disperse dyes in high-temperature dyeing. 5 Materials and instruments
5.1 The reagents used should comply with the relevant provisions of GB/T2374. Acetone: analytical grade.
Chlorobenzene + phenol mixture: 1+1 (mass ratio). 5.2 Instruments and apparatus used.
Laboratory high-temperature and high-pressure dyeing machine;
Analytical balance: sensitivity 0.0001g;
Spectrophotometer;
Color measuring instrument: in accordance with the relevant provisions of GB/T6688;d
Volume flask: 50mL;
f. Pipette: 2mL;
Approved by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China on July 13, 2001 and implemented on February 1, 2002
gGlass pipette;
h. Water bath.
6 Test sample
GB/T 9337—2001
6.1 The dyeing conditions of the test sample shall be carried out in accordance with the provisions of the product standard. 6.2 The dyeing depth of the test sample shall be carried out in accordance with the depth of color light and intensity measured in each product standard. 7 Determination of the color uptake rate of disperse dyes at high temperature Determination steps
7.1 Take a piece of dyed sample at a certain time after dyeing according to the requirements of 6.1 and 6.2, cut it into pieces and mix it, weigh about 0.1g of the sample (accurate to 0.0001g), put it in a 50mL volumetric flask, add 3mL of chlorobenzene and phenol mixture, immerse the sample in the above solution, and then place it in a boiling water bath to completely dissolve it. After cooling to room temperature, add acetone while shaking to precipitate all the polyester resin flocs, then dilute it to the scale with acetone and shake it evenly, cover it and let it stand, making sure that all the polyester resin flocs are deposited at the bottom of the bottle for use. 7.2 Use a pipette to draw XmL (the amount of dye used to dye 0.1g of fiber, generally controlled at about 2mL) from the prepared dye solution and place it in a 50mL volumetric flask, add 3mL of chlorobenzene-phenol mixed solution, then place it in a boiling water bath for 23min, cool to room temperature, dilute with acetone to the scale, shake well, cover and let stand for use. 7.3 Use a glass pipette to carefully draw the clear colored liquid from the upper part of the prepared solution, use acetone as a blank solution, and measure the optical density value at the maximum absorption wavelength on a spectrophotometer. 8 Determination of relative color uptake rate of high-temperature dyeing of disperse dyes 8.1 Transmission method
Weigh about 0.1g (accurate to 0.0001g) of the dyed sample at a certain moment in the dyeing process and the final dyed sample under normal high-temperature and high-pressure dyeing conditions, respectively, and then treat according to 7.1 and measure according to 7.3. 8.2 Reflection method
According to the relevant provisions of GB/T6688, the reflectance value of the dyed sample at a certain moment in the dyeing process (indicated by the subscript "sample") and the final dyed sample under normal high temperature and high pressure dyeing conditions (indicated by the subscript "standard") is determined. 9 Expression of test results
9.1 Disperse dye high temperature dyeing color uptake F (%) is calculated according to formula (1): E,X0.1
1×100
Wherein, F is the color uptake,%;
E1 is the optical density value of the dye sample extract at a certain moment in the dyeing process; E2 is the optical density value of the amount of dye put into the dye bath for dyeing 0.1g of fiber; m is the mass of the sample, g.
9.2 Determination of relative color uptake of disperse dye high temperature dyeing 9.2.1 Relative color uptake S (% of disperse dye high temperature dyeing) %) (transmission method) is calculated according to formula (2): E2.ml×100
Ei·m2
Wherein: S is the relative color uptake rate (transmission method), %E1 is the optical density value of the final dye sample extract under normal high temperature and high pressure dyeing conditions; E2 is the optical density value of the dye sample extract at a certain moment in the dyeing process; m1 is the mass of the final dye sample under normal high temperature and high pressure dyeing conditions, g; 2
GB/T9337-2001
is the mass of the dye sample at a certain moment in the dyeing process, name. 9.2.2 Relative color uptake rate S (%) of disperse dyes at high temperature dyeing (reflection method) is calculated using Kubelka-Munk formula (3) and (4): S
(K/S) standard
(1 — R)2
Wherein, 2R. —Reflectance value of dyed material at the wavelength of maximum absorption. Note: The relative color uptake of disperse dyes at high temperature dyeing calculated by Kubelka-Munk formula is applicable to single dyes. 9.2.3 The relative color uptake of disperse dyes at high temperature dyeing (reflection method) is calculated by Integ formula (5), (6) and (7): #×100
Sp66(a)·F(a).[X10()+Y10()+Z10()J400
[1-R()J2
Wherein:
[1 - Rs()]2
2Rs(a). o
-CIE recommended DS6 standard illuminant spectral energy distribution; F(a)——Kubelka-Munk function value of dye at a certain wavelength a; R(a). ——Reflection value of dye at wavelength; Rs(). —Reflection value of blank dye at wavelength λ; X1o(a), Y10(a), Z1o(2)——CIE1964 supplementary standard colorimetric observer matching function; wavelength interval.
........(4)
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Note: The relative coloring rate of high-temperature dyeing of disperse dyes calculated using the Integ formula is applicable to all dyes, especially to mixed dyes and dyes with more than two obvious absorption peaks or no obvious absorption peaks. 10 Test report
The test report should include the following:
a) State the number and year of this standard;
b) The full name of the dye being tested;
c) Dyeing method and dyeing depth;
d) Measurement wavelength,
e) Type of instrument used;
f) Test results;
g) Special circumstances during the test;
h) Differences from this method.
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