KR100572085B1 - Test reagent for textiles and method thereby - Google Patents

Abstract

The present invention relates to the provision of a fiber discrimination reagent capable of discriminating the type of fiber material in a short time and a fiber discrimination method using the same, without using a separate device in discriminating the type of fiber material. In the present invention, in the fiber material discrimination reagent composed of different dyes, 100 parts by weight of disperse dyes and 3.3 to 225 parts by weight of dyes, 3.3 to 225 parts by weight of acid dyes and 3.3 to 225 parts by weight of cationic dyes are mixed. The present invention provides a differentiation agent for fibrous materials, in which each dye has a different color. Since the color of the fiber obtained after immersing the fibrous sample to be discriminated in the reagent of the present invention is clearly distinguished through a visual method, the skill and experience of the practitioner are not required, and various instruments required for a separate measuring instrument or solubility differentiation method are required Not.

Description

Textile test for differentiation and method using the same {Test reagent for textiles and method hence}

When the reagents are used to discriminate the type of the fiber material as in the present invention, not only separate apparatuses are used, but also the skill and experience of the tester are not required, and the time required is short.

 Fiber materials are roughly classified into natural fibers such as wool, silk, cotton, and hemp and artificial fibers such as acetate, acrylic, rayon, polyester, and nylon. Various existing methods for differentiating these types of textile materials have been proposed in AATCC Test Method 20-1990. For example, systematic dissolution by solvent, combustion by combustion gas and residue form by combustion, differentiation through form obtained by enlarging side / section of fiber with optical microscope, refractive index, density, degree of orientation, melting point, etc. There are methods of differentiation by physical properties. In addition, there are combustion gas analysis by gas chromatography, instrument analysis using IR or NMR, and dyeing.

 In the sensory discrimination method based on the combustibility according to the type of fiber and the residues remaining after combustion, the fiber and wool, wool and silk, rayon and cotton, acrylic and polyester have similar characteristics. Is impossible. In addition, even if the combustion gas is collected and distinguished using gas chromatography, it is difficult to accurately distinguish cotton, rayon, and hemp fibers. The method of differentiating the side / section of the fiber by using an optical microscope not only requires expensive microscopes and accessories but also can be used as a reference when heterogeneous cross-section fibers are widely used today. The solubility method distinguishes the types of fiber materials by observing the apparent dissolution behavior of the fiber materials in 13 organic and inorganic solvents.The test procedure is complicated, the test time is long and cumbersome, and 1,4-dioxane, formic acid, sulfuric acid Toxic solvents such as hydrochloric acid and hydrochloric acid are used, which requires extra attention to safety. Differentiating fiber types by measuring physical properties such as refractive index, density, orientation, and melting point requires expensive analytical equipment to measure each property, requires highly skilled tester, and The judgment time is long. Sometimes fiber discrimination using IR or NMR is required. These methods also require expensive analytical equipment and require a lot of time for testing and evaluation with experienced testers.

Finally, for the qualitative analysis of textile materials by dyeing, Nippon Kayaku Co., Ltd. sells analytical reagents. The analytical reagents are dissolved / dispersed in water, and a fiber sample is added and dyed for 10 minutes at the boiling point. Different types of textile materials This method requires a separate test dyeing machine because it must go through a high temperature dyeing process, and at least 2 hours is required for preparation / dyeing to obtain test results. As such, conventional fiber differentiation requires a separate device or equipment, requires a high level of prior knowledge and skill of the test evaluator, and has a disadvantage in that the process is complicated and time-consuming to obtain a result.

Therefore, the main object of the present invention does not require a separate device, and simply immersed the test cloth in the differentiation solution without high temperature dyeing, so that test preparation, result acquisition, and evaluation time are short, and it is easy to discriminate types of textile materials. By providing a reagent and a test method that can be, the present inventors have completed the present invention by knowing that the fibers can be distinguished by dyeing after dyeing by mixing dyes according to the dyeing characteristics of various fibers.

Therefore, according to the present invention, in the fiber material differentiation reagent composed of different dyes, 100 parts by weight of disperse dyes and 3.3 to 225 parts by weight of dyes, 3.3 to 225 parts by weight of acid dyes and 3.3 to 225 parts by weight of cationic dyes are mixed. The differentiation reagent is provided, characterized in that each dye has a different color.

In the present invention, the differentiation of the fiber material is characterized in that the fiber material differentiation reagent is dissolved in a mixed solvent of an alcoholic organic solvent and water, and the fiber is immersed and dried at room temperature to discriminate the type of fiber material by the color of the fiber. A method is provided.

Hereinafter, the present invention will be described in more detail.

The fibers have different dyeing properties for each dye type. For example, cellulose-based natural fibers such as hemp, rayon, and cotton show high affinity for direct dyes. Polyamide-based fibers such as wool, silk, and nylon are acid dyes, acrylic fibers are cationic dyes, and hydrophobic fibers such as polyester, acetate, triacetate, and the like have high affinity for disperse dyes. In addition, even if different fibers are dyed with the same dye, the affinity for the dye is different depending on the type of fiber. For example, direct dyes show high affinity for cellulose fibers, but differ in degree of affinity according to hemp, cotton, and rayon fibers, and are smaller than nylon, wool, and silk fibers as described above, but have specific affinity. .

 The present invention provides a qualitative analysis reagent of a fiber material made by selecting direct, acidic, cation, disperse dyes, etc. having different colors and affinity, and blending them, and also easily dissolving the dyes at room temperature. The present invention provides a method of coloring a fiber material using a mixed solvent of an organic solvent and water, which can serve as an accelerator for coloring, and then discriminating the type of the fiber material therefrom.

 The fiber material differentiation reagent in the present invention can be made by mixing several kinds of dyes having different colors such as direct dyes, acid dyes, cationic dyes, and disperse dyes. Direct dyes include C.I. red Direct dye 80, C.I. Direct red direct dye (Red 81), C.I. One type of acidic dye in Direct Red 227 is C.I. Acid Green 81, a cationic dye, is C.I. Basic Yellow 28, dispersing dyes include C.I. Disperse Blue 27, C.I. Disperse Blue You can select one of each dye from dyes such as 106 and mix to make it easier to distinguish the fiber material. At this time, the type and color of the blending dye to distinguish the fiber material is not limited to those specified in the present invention can be used in various mixtures.

 Direct dyes, acid dyes, and cationic dyes mixed in the present invention may be blended 3.3 to 225 parts by weight based on 100 parts by weight of the disperse dyes. When dye is contained at a lower ratio than this composition ratio, it is difficult to distinguish the fiber materials by sensory inspection because the color density of the fiber to be colored is low. In addition, when using a reagent containing a greater amount of dye than this ratio, it is difficult to distinguish colors due to differences in affinity due to excessive coloring. The color of each dye, for example, the direct dye is red, the acid dye is green, the cation dye is yellow, and the disperse dye is blue. Done. The same dye may be colored on different fibers, whereby the shades may be colored differently according to the difference in the affinity for the individual fibers of each dye for qualitative analysis of the fiber material.

When the reagents blended in the above weight ratio have a powdery form, the reagents are dissolved in a mixed solvent consisting of an organic solvent and water at a concentration of 0.3 to 2.7%, and used in a fiber discrimination method. After dipping the fiber sample to be discriminated in the mixed solution, shaking it in water, washing it with water, and wrapping the sample with filter paper or tissue and pressing the sample to remove moisture as much as possible, drying at room temperature, and drying the color of the dried sample. Through this, the kind of textile material can be discriminated sensually. As an organic solvent which can be used, alcohol, such as methanol, ethanol, propanol, isopropanol, is preferable. These solvents can be colored quickly without dissolving or damaging the material to be discriminated. Among them, methanol can be easily purchased and used, and the unsubstituted methanol dries quickly during washing, so it can be selected as a suitable solvent for the test. At this time, when the concentration of the differentiating reagent is less than 0.3%, the coloration is not clearly performed. When the concentration of the reagent is higher than 2.7%, the dissolution of the reagent is not performed quickly and undissolved dye is generated. It is difficult to judge.

 Hereinafter, examples of the present invention will be described in detail, and the present invention is not limited to the following examples.

Example 1

1.5 g of red direct dye 81 (CI Direct Red 81), 1.5 g of green acid dye 81 (CI acid green 81), 1.5 g of yellow cation dye 28 (CI basic yellow 28), blue disperse dye 106 (CI disperse blue 106) 5 g were combined to make 9.5 g of reagent. 0.95 g of the reagent was dissolved in 100 ml of a 1: 1 mixture of methanol and water with a glass rod for 2 minutes to prepare a 0.941% solution. The AATCC Multi-fabric standard test cloth for washing fastness test was immersed in this solution for 10 seconds and then taken out. The sample was shaken with water for 10 seconds, washed with water, dried with toilet paper, and dried at room temperature for 20 minutes.

For qualitative analysis of the fibrous material according to Example 1, the sensory test was performed to determine the ease of classification. Table 1 shows the use of Macbeth Color-Eye 7000A to determine the L *, a *, b * Color values were measured and indicated. In general, if the Delta E value is 2.0 or more, color can be distinguished by sensory test.

Comparative Example 1

 0.1 g of red direct dye 81 (CI Direct Red), 1.5 g of green acid dye 81 (CI Acid Green), 1.5 g of yellow cationic dye 28 (CI Basic Yellow), 5 g of blue disperse dye 106 (CI Disperse Blue) 8.1 g of the reagent was prepared. 0.95 g of this reagent was dissolved in 100 ml of a 1: 1 mixture of methanol and water in the same manner as in Example 1 to prepare a 0.941% solution. The AATCC Multi-fabric standard test cloth for washing fastness test was immersed in this solution for 10 seconds and then taken out. The sample was shaken with water for 10 seconds, washed with water, dried with toilet paper, and dried at room temperature for 20 minutes.

 The sample obtained at this time does not express red, which is the color of the direct dye used. In other words, it is not possible to color cotton, viscose rayon, and contamination of nylon and silk does not occur.

Comparative Example 2

 CI direct red 81 1.5 g, acid acid green 81 1.7 g, yellow cation dye 28 (CI basic yellow 28) 1.6 g, blue disperse dye 106 (CI disperse blue 106) 4 g were combined to make 8.8 g of reagent. 0.23 g of this reagent was dissolved in 100 ml of a 1: 1 mixture of methanol and water in the same manner as in Example 1 to prepare a 0.229% solution. The AATCC Multi-fabric standard test cloth for washing fastness test was immersed in this solution for 10 seconds and then taken out. The sample was shaken with water for 10 seconds, washed with water, dried with toilet paper, and dried at room temperature for 20 minutes.

 In Comparative Example 2, since the coloring is very insignificant over all the fiber materials of the sample, it is impossible to distinguish the fiber materials through the sensory test.

Comparative Example 3

 1.3 g of red direct dye (CI Direct Red 81), 1.4 g of green acid dye (CI Acid Green 81), 1.2 g of yellow cation dye 28 (CI Basic Yellow 28), blue disperse dye 106 (CI Disperse Blue 106) 6 g were combined to make 9.9 g of reagent. 3 g of this reagent was dissolved in 100 ml of a 1: 1 mixture of methanol and water in the same manner as in Example 1 to prepare a 2.913% solution. The AATCC multi-fabric standard test cloth for washing fastness test was immersed in this solution for 10 seconds, and then taken out. The sample was shaken with water for 10 seconds, washed with water, dried with toilet paper, and dried at room temperature for 20 minutes.

In this Comparative Example 3, the reagent concentration was too high, the dissolution time was long, and there were dyes that did not dissolve, and the coloring and contamination of each fiber material were excessive, so that it was impossible to distinguish the fiber materials through the sensory test.

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[Comparative Example 4]

 CI direct red 81 (1.7 g), green acid dye (CI acid green 81) 1.6 g, yellow cation dye 28 (CI basic yellow 28) 1.5 g, blue disperse dye 106 (CI disperse blue 106) 6 g were combined to prepare 10.8 g of reagent. 1.12 g of this reagent was dissolved in 100 ml of acetone and water 1: 1 mixture in the same manner as in Example 1, to prepare a 1.108% solution. The AATCC multi-fabric standard test cloth for washing fastness test was immersed in this solution for 10 seconds, and then taken out. The sample was shaken with water for 10 seconds, washed with water, dried with toilet paper, and dried at room temperature for 20 minutes.

 In Comparative Example 4, the partial dissolution of acetate and triacetate occurred by acetone and adhered to other fibers, so that it was impossible to distinguish the fibrous material through the sensory test.

 The sensory test results of the experimental samples of Examples 1 and 2 and Comparative Examples 1 to 4 are shown in Table 2 below.

Textile material Fiber Characteristics of Examples L * a * b * DE * Polyester 63.926 1.034 6.778 - acetate 31.141 -5.346 -1.589 34.432 Triacetate 48.653 -5.794 -7.535 22.017 if 48.564 17.228 0.431 23.206 acryl 68.073 1.224 12.264 6.880 nylon 47.238 1.795 -10.452 23.999 Dog 37.548 4.977 10.624 26.947 Viscose 58.928 13.270 0.492 14.636 wool 55.250 -2.897 12.909 11.328

Textile material Sensory test result Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Polyester ◎ ◎ o ◎ ◎ acetate ◎ ◎ ◎ × × Triacetate ◎ ◎ o △ △ if ◎ △ △ o o acryl ◎ ◎ △ ◎ ◎ nylon ◎ △ △ △ ◎ Dog ◎ △ o × △ Viscose ◎ △ △ o o wool ◎ △ △ × o

* ◎: Easy to discriminate by sensory test, ○: Only those who are skilled in color discrimination can discriminate, △: Only by colorimeter, X: Not distinguishable.

Therefore, according to the present invention, it is possible to easily discriminate the type of fiber material in a short time of 50 minutes or less at room temperature without the need for a separate device and an experienced tester. There is no need for a tester, and there is an advantage in that the type of fibers can be discriminated through color differences of easily dyed textile materials.

Claims (8)

In the differentiation of textile materials consisting of different dyes, 100 parts by weight of disperse dyes and 3.3 to 225 parts by weight of dyes directly, 3.3 to 225 parts by weight of acid dyes and 3.3 to 225 parts by weight of cationic dyes, wherein each dye has a different color. Differential reagents.  The method of claim 1, wherein the direct dye is selected from one of red direct dye 80 (CIDirect Red 80), red direct dye 81 (CI Direct Red 81), red direct dye 227 (CIDirect Red 227), characterized in that Textile Differentiation Reagent. The method of claim 1, wherein the acid dye is selected as a green acid dye 81 (C.I. Acid Green 81). The method of claim 1, wherein the cation dye is selected as basic yellow 28 (C.I. Basic Yellow 28). The method of claim 1, wherein the disperse dye is selected from a blue disperse dye 27 (C.I. Disperse Blue 27), a blue disperse dye 106 (C.I. Disperse Blue 106). 100 parts by weight of disperse dyes and 3.3 to 225 parts by weight of dyes, 3.3 to 225 parts by weight of acid dyes and 3.3 to 225 parts by weight of cationic dyes, each dye having a different color, and a differentiating agent A fiber material discrimination method comprising dissolving at a concentration of 0.3 to 2.7% in a mixed solvent of an organic solvent and water, immersing and drying the fibers at room temperature, and discriminating the type of the fiber material by the color of the fiber.  The method of claim 6, wherein the alcohol-based organic solvent is any one of methanol, ethanol, propanol, isopropanol. delete