Method for distinguishing waterless dyeing of fabric

Abstract

The invention provides a fabric waterless dyeing distinguishing method, which comprises the following steps: sample preparation: selecting a sample, preparing the sample into a powder sample, tabletting, and transferring into an X-ray photoelectron spectrometer; instrument parameter setting: selecting an X-ray source, and setting analyzer parameters; data acquisition: scanning powder sample tablets in a spectrum scanning range, and confirming the position of a Na1s peak and coexisting elements; setting a high-resolution narrow spectrum according to the position of the Na1s peak, scanning the powder sample tablet within the range of the high-resolution narrow spectrum, and collecting a correction reference; data processing and analysis: correcting binding energy by adopting a correction reference, and carrying out peak-dividing fitting through a software tool; and by referring to the binding energy, calculating the atomic concentration of the Na element by adopting a sensitivity factor method, and distinguishing waterless staining and water staining according to the atomic concentration of the Na element and a preset distinguishing standard. The method has the advantage that the supercritical waterless dyed fabric and the water dyed fabric can be effectively distinguished.

Description

Technical field

[0001] The invention relates to a distinguishing method, in particular to a distinguishing method for waterless dyeing of fabrics. [Background Technology]

[0002] Traditional fabric dyeing mostly relies on water-based dyeing. While this process offers advantages in terms of applicability and technological maturity, it consumes significant amounts of water resources, produces significant amounts of wastewater, and pollutes the environment. Furthermore, there are issues such as color variation after dyeing. The water consumption and wastewater discharge issues in the printing and dyeing industry have severely constrained sustainable development strategies and the industry's development, impacting people's quality of life.

[0003] In recent years, research on supercritical fluid anhydrous dyeing technology has gradually attracted attention. Supercritical fluid anhydrous dyeing technology (such as supercritical CO2 anhydrous dyeing) utilizes the strong swelling effect of certain fluids on fibers in a supercritical state and their good solubility for certain dyes. This allows the dye to be quickly dyed onto fibers in an anhydrous state, thereby achieving fiber dyeing.

[0004] Currently, supercritical CO2 anhydrous dyeing surpasses traditional water-based dyeing in terms of dyeing uniformity, vividness, color fastness, and environmental friendliness, making it particularly suitable for dyeing synthetic fibers. However, in practice, it is difficult to reliably distinguish whether a fabric has been dyed with water or supercritical CO2 anhydrous dyeing by visual inspection. Therefore, a method for distinguishing fabrics dyed with supercritical CO2 anhydrous dyeing from those dyed with water is urgently needed. [Summary of the invention]

[0005] The technical problem to be solved by the present invention is to provide a method for distinguishing waterless dyed fabrics, which can effectively distinguish between supercritical waterless dyed fabrics and water-dyed fabrics.

[0006] The present invention is achieved by: a method for distinguishing waterless dyeing of fabrics, the method comprising the following steps:

[0007] Sample preparation: Select the sample, prepare the sample into a powder sample tablet, and transfer the prepared powder sample tablet into the X-ray photoelectron spectrometer;

[0008] Instrument parameter settings: select the X-ray source; set the analyzer parameters, including the energy, scanning step and beam spot size;

[0009] Data acquisition: Scan the powder sample pellet within a broad spectrum scan range to confirm the Na1s peak position and coexisting elements; set a high-resolution narrow spectrum based on the Na1s peak position, scan the powder sample pellet within the high-resolution narrow spectrum range, and collect a calibration reference for charge correction;

[0010] Data processing and analysis: The binding energy was calibrated using a calibration benchmark, and peak fitting was performed using software tools. The atomic concentration of the Na element was calculated using the sensitivity factor method with reference to the binding energy, and the anhydrous staining and aqueous staining were distinguished based on the atomic concentration of the Na element and the preset resolution benchmark.

[0011] Furthermore, the preset resolution benchmark is 1%.

[0012] Furthermore, the data processing and analysis specifically include:

[0013] Charge correction: C1s is used as the calibration reference to calibrate binding energy;

[0014] Background subtraction: Select Shirley or Tougaard background to subtract the contribution of inelastic scattered electrons;

[0015] Peak fitting: XPSPeak software was used for peak fitting, where the peak shape parameters are as follows:

[0016] Gaussian-Lorentz mixing ratio: 70-80% Gaussian, 20-30% Lorentzian; half-peak width: 1.0-1.8 eV;

[0017] Reference binding energy: Na + (NaCl): 1071.5±0.2eV; Na + (Na2CO3): 1072.3±0.3eV;

[0018] Calculation and analysis: The atomic concentration of the Na element is calculated using the Scofield factor, and it is determined whether the calculated atomic concentration of the Na element exceeds the preset resolution standard. If so, it is determined to be water staining; if not, it is determined to be anhydrous staining.

[0019] Furthermore, the preset resolution benchmark includes a first resolution benchmark and a second resolution benchmark, wherein the first resolution benchmark is 0.5% and the second resolution benchmark is 1%;

[0020] The calculation and analysis are specifically as follows: using the Scofield factor to calculate the atomic concentration of the Na element, judging whether the calculated atomic concentration of the Na element is lower than the first resolution standard, if so, judging it as anhydrous staining; if not, continuing to judge whether the calculated atomic concentration of the Na element exceeds the second resolution standard, if so, judging it as water staining, if not, judging it as pending.

[0021] Furthermore, the sample preparation specifically includes:

[0022] Ultrasonic cleaning and drying of the sample holder are performed in advance;

[0023] While wearing dust-free gloves, use clean tweezers to clamp the selected sample onto the sample holder;

[0024] Put the sample holder and the sample into the glove box, and prepare the sample into a powder sample tablet in the glove box;

[0025] The prepared powder sample pellets were transferred to the X-ray photoelectron spectrometer via a vacuum sealed transfer box.

[0026] Furthermore, in the instrument parameter setting, an AlKα monochromatized source was selected as the X-ray source.

[0027] Furthermore, in the instrument parameter settings, the pass energy is set to 20-40 eV, the scanning step is set to 0.05-0.1 eV, and the beam spot size is set to 200-500 μm.

[0028] Furthermore, the data acquisition also includes: adopting an anti-radiation damage strategy to reduce the power of the X-ray source to below 100W, and superimposing the data after multiple scans.

[0029] Furthermore, in data acquisition, the broad spectrum scanning range was 0-1200 eV, the pass energy was 100-150 eV, and the number of scans was 1-2 times.

[0030] Furthermore, in data acquisition, the range of the high-resolution narrow spectrum is 1065-1075 eV, the pass energy is 20-40 eV, the number of scans is 10-20 times, and the calibration reference for acquisition is C1s or O1s.

[0031] By adopting the technical solution of the present invention, at least the following beneficial effects are achieved: by using an X-ray photoelectron spectrometer to test the content of the Na element, presetting a resolution benchmark, and comparing the tested Na element content with the preset resolution benchmark, it is possible to effectively distinguish between supercritical anhydrous dyed fabrics and water-dyed fabrics, thereby meeting the market and customer needs.

Brief Description of the Drawings

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0033] Figure 1 This is a flowchart of an execution flow of a method for distinguishing waterless dyeing of fabrics according to the present invention;

[0034] Figure 2 This is the Na element spectrum obtained by testing the sample dyed with 0.1% Disperse Blue 291 and traditional water dyeing;

[0035] Figure 3 This is the Na element spectrum obtained by testing the sample dyed with 0.1% Disperse Blue 291 and supercritical CO2 anhydrous dyeing;

[0036] Figure 4 This is the Na element spectrum obtained by testing the sample dyed with 0.8% Disperse Blue 291 and traditional water dyeing;

[0037] Figure 5 This is the Na element spectrum obtained by testing the sample dyed with 0.8% Disperse Blue 291 and supercritical CO2 anhydrous dyeing;

[0038] Figure 6 This is the Na element spectrum obtained by testing the sample dyed with 1.6% Disperse Blue 291 and traditional water dyeing;

[0039] Figure 7 This is the Na element spectrum obtained by testing a sample dyed with 1.6% Disperse Blue 291 and supercritical CO2 anhydrous dyeing;

[0040] Figure 8 This is the Na element spectrum obtained by testing with a white embryo. [Specific implementation method]

[0041] In order to better understand the technical solution of the present invention, the technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0042] It should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of these embodiments and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. In addition, the terms "first," "second," and the like are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, features defined as "first," "second," and the like may explicitly or implicitly include one or more of such features.

[0043] Before we get into this, let's first explain some of the differences between supercritical CO2 anhydrous dyeing and water-based dyeing for fabrics, including uniformity, vividness, color fastness, dye utilization, fiber damage, applicable fibers, and dye depth. Supercritical CO2 anhydrous dyeing offers excellent uniformity and no color difference; vibrant colors and strong color rendering; high dye utilization and recyclability; high color fastness, requiring no post-processing; minimal fiber damage, suitable for sensitive fibers; excellent results for synthetic fibers; and good dark dyeing with saturated colors. Water-based dyeing's uniformity is affected by the process and may result in color difference; vividness is affected by water quality and dye dispersibility; color fastness relies on post-processing, making the process complex; low dye utilization and high residue; potential for heat damage or shrinkage; suitable for all types of fibers, and mature technology; and requires multiple treatments for dark dyeing.

[0044] See also Figures 1 to 8 As shown, in a preferred embodiment of a method for distinguishing waterless dyeing of fabrics of the present invention, the distinguishing method comprises the following steps:

[0045] Sample preparation: Select the sample, prepare the sample into a powder sample pellet, and transfer the prepared powder sample pellet into an X-ray photoelectron spectrometer (XPS);

[0046] Instrument parameter settings: select the X-ray source; set the analyzer parameters, including the energy, scanning step and beam spot size;

[0047] Data acquisition: Scan the powder sample pellet within a broad spectrum scan to confirm the position of the Na1s peak (~1070-1072 eV) and coexisting elements. A high-resolution narrow spectrum is set based on the Na1s peak position. Scan the powder sample pellet within the high-resolution narrow spectrum (Na1s) and collect a calibration reference for charge correction. The Na1s peak is a characteristic peak of sodium in X-ray photoelectron spectroscopy (XPS), representing the binding energy of the sodium atom's 1s orbital electrons. Its position is typically within the range of ~1070-1072 eV.

[0048] Data processing and analysis: The binding energy was calibrated using a calibration benchmark, and peak fitting was performed using software tools. Referring to the binding energy, the atomic concentration of the Na element (i.e., the content of the Na element) was calculated using the sensitivity factor method, and the anhydrous dye and the aqueous dye were distinguished based on the atomic concentration of the Na element and the preset resolution benchmark.

[0049] In a preferred embodiment of the present invention, in order to distinguish between water-free dyeing and water-dyed dyeing of fabrics, the preset distinction standard is 1%.

[0050] In a preferred embodiment of the present invention, the data processing and analysis specifically include:

[0051] Charge correction: C1s (284.8 eV) is used as the calibration reference to calibrate the binding energy;

[0052] Background subtraction: Select Shirley or Tougaard background to subtract the contribution of inelastic scattered electrons;

[0053] Peak Fitting: XPSPeak software was used for peak fitting, where the peak shape parameters are as follows:

[0054] Gaussian-Lorentzian mixing ratio (GL%): 70-80% Gaussian, 20-30% Lorentzian; Full width at half maximum (FWHM): 1.0-1.8 eV (broadening caused by chemical state differences);

[0055] Reference binding energy: Na + (NaCl): 1071.5±0.2eV; Na + (Na2CO3): 1072.3±0.3eV;

[0056] Calculation and analysis: The atomic concentration of the Na element is calculated using the Scofield factor, and it is determined whether the calculated atomic concentration of the Na element exceeds the preset resolution standard. If so, it is determined to be water-stained; if not, it is determined to be anhydrous. The specific calculation formula is as follows:

[0057]

[0058] Among them, I j Represents the peak area of ​​each element, S j Indicates the sensitivity factor corresponding to each element, I Na1s represents the peak area of ​​Na element, S Na Indicates the corresponding sensitivity factor of Na element.

[0059] As a specific embodiment of the present invention, in order to further improve the accuracy of resolution, the preset resolution benchmark includes a first resolution benchmark and a second resolution benchmark, wherein the first resolution benchmark is 0.5% and the second resolution benchmark is 1%;

[0060] The calculation and analysis specifically includes: using the Scofield factor to calculate the atomic concentration of the Na element, determining whether the calculated atomic concentration of the Na element is lower than a first resolution standard, and if so, determining that it is anhydrous dyeing; if not, then continuing to determine whether the calculated atomic concentration of the Na element exceeds a second resolution standard, and if so, determining that it is water-dyed, and if not, determining that it is undetermined. That is, in the specific implementation of the present invention, once the calculated atomic concentration of the Na element exceeds 1%, it can be determined that the fabric is water-dyed, and if the calculated atomic concentration of the Na element is less than 0.5%, it can be determined that the fabric is anhydrous dyeing; and if the calculated atomic concentration of the Na element is between 0.5% and 1%, it is determined that it is undetermined, and the sample can be resampled and retested. Of course, other methods such as manual visual observation can also be used for judgment.

[0061] In a preferred embodiment of the present invention, the sample preparation specifically includes:

[0062] The sample holder is ultrasonically cleaned and dried in advance, specifically using ethanol for ultrasonic cleaning;

[0063] While wearing dust-free gloves, use clean tweezers to clamp the selected sample onto the sample holder to prevent sweat or organic matter from contaminating the sample during operation;

[0064] Place the sample holder and sample into a glove box (e.g., nitrogen glove box, argon glove box, etc.), and prepare the sample into a powder sample tablet inside the glove box, ensuring that the surface of the powder sample tablet is flat. A glove box is primarily used for operation in an oxygen-free, water-free, and dust-free environment. It usually consists of a main box and a transition chamber, which maintains a special internal environment by evacuating the chamber and filling it with an inert gas (e.g., nitrogen or argon).

[0065] The prepared powder sample tablets are transferred to the X-ray photoelectron spectrometer through a vacuum-sealed transfer box. During the specific implementation of the present invention, the transfer time needs to be less than 1 minute to minimize air exposure. The vacuum-sealed transfer box is a device for sealing, storing and transferring items under specific environments. Its core feature is that it can isolate the external environment to a certain extent and create a relatively vacuum internal space.

[0066] In a preferred embodiment of the present invention, in the instrument parameter setting, an AlKα monochromatization source is selected as the X-ray source (1486.6 eV) to avoid the interference of the NaKLL Auger peak (~500 eV) excited by MgKα with other element analysis.

[0067] In a preferred embodiment of the present invention, in the instrument parameter settings, the pass energy (Pass Energy) is set to 20-40 eV (i.e., the pass energy of the high-resolution narrow spectrum is set to 20-40 eV) to balance the resolution and signal-to-noise ratio; the scan step size (StepSize) is set to 0.05-0.1 eV to ensure peak shape details; and the beam spot size is set to 200-500 μm. By using a small beam spot, irradiation damage is reduced.

[0068] In a preferred embodiment of the present invention, the data acquisition further includes: adopting an anti-radiation damage strategy to reduce the power of the X-ray source to below 100W, and superimposing the data after multiple scans to avoid sample decomposition caused by a single long exposure.

[0069] In a preferred embodiment of the present invention, during data acquisition, a broad spectrum scan (Survey Scan) range is 0-1200 eV, a pass energy is 100-150 eV, and the number of scans is 1-2. The purpose of performing a broad spectrum scan on a powder sample pellet is to confirm the position of the Na1s peak (~1070-1072 eV) and coexisting elements.

[0070] In a preferred embodiment of the present invention, during data acquisition, the high-resolution narrow spectrum has a range of 1065-1075 eV, a pass energy of 20-40 eV, and a scan frequency of 10-20 times. The calibration benchmark for acquisition is C1s (284.8 eV) or O1s (530 eV). The high-resolution narrow spectrum range is obtained by fine-tuning the Na1s peak identified in the broad spectrum. Due to the low sensitivity of Na, the scan frequency is set to 10-20 times. C1s represents the signal peak of the carbon atom's 1s orbital electrons, and 284.8 eV is typically used as the standard binding energy for extraneous carbon contamination for charge correction. O1s represents the signal peak of the oxygen atom's 1s orbital electrons, and the region near 530 eV often corresponds to oxygen in the metal-oxygen bond.

[0071] The technical solution of the present invention is further described in detail below through some specific sample test examples:

[0072] The present invention specifically sets up 4 groups of sample test examples, among which, the disperse dyes of the first group of sample test examples all adopt 0.1% disperse blue 291, and one of the samples adopts traditional water dyeing, and the Na element spectrum thereof is as follows Figure 2 As shown, another sample was dyed with supercritical CO2 anhydrous, and the Na element spectrum was as follows Figure 3 As shown; the disperse dyes of the second group of sample test examples all use 0.8% disperse blue 291, and one of the samples is dyed with traditional water, and the Na element spectrum tested is as follows Figure 4 As shown, another sample was dyed with supercritical CO2 anhydrous, and the Na element spectrum was as follows Figure 5 As shown; the disperse dyes of the third group of sample test examples all use 1.6% disperse blue 291, and one of the samples is dyed with traditional water, and the Na element spectrum tested is as follows Figure 6 As shown, another sample was dyed with supercritical CO2 anhydrous, and the Na element spectrum was as follows Figure 7 As shown; the third group of sample test examples are white embryos, and the Na element spectrum tested is as follows Figure 8 The specific test results are shown in Table 1 below:

[0073] Table 1 Sample test examples

[0074]

[0075] From the above Figure 2-Figure 8 As can be seen from Table 1, the Na element can be detected regardless of whether traditional water dyeing, supercritical CO2 anhydrous dyeing, or white embryo dyeing is used. From the test results, the Na element content (i.e., atomic concentration) tested by traditional water dyeing is more than 1%, namely 1.08%, 1.38%, and 1.49% respectively; the Na element content (i.e., atomic concentration) tested by supercritical CO2 anhydrous dyeing is less than 0.5%, namely 0.3%, 0.49%, and 0.33% respectively; and the Na element content (i.e., atomic concentration) tested by white embryo dyeing is 0.23%. The above test results show that the present invention can effectively distinguish between supercritical anhydrous dyeing and water-dyed fabrics by using an X-ray photoelectron spectrometer to test the Na element content, presetting a resolution standard, and comparing the tested Na element content with the preset resolution standard, thereby meeting the market and customer needs.

[0076] The basis for judging the present invention is described below:

[0077] (1) Overlapping elements: Carbon (C), hydrogen (H), oxygen (O), sulfur (S), nitrogen (N), etc. are common elements of both (water-dyed disperse dyes and anhydrous disperse dyes), but the specific chemical forms may be different, such as:

[0078] Sulfur (S): may exist in azo groups in dyes and may exist in sulfonic acid groups (-SO3 - ) form.

[0079] Nitrogen (N): It exists in the chromophore group in dyes and may exist in amine surfactants in additives.

[0080] (2) Non-overlapping elements: elements specific to disperse dyes used in traditional water-based dyeing: sodium (Na)

[0081] The present invention uses sodium (Na) as the basis for comparison and distinction: disperse dyes used in traditional water dyeing add a large amount of dispersants and electrolytes as fillers, which contain a large amount of sodium; while disperse dyes processed from pure filter cakes used in supercritical CO2 anhydrous dyeing have almost no residual sodium during the dyeing process. As for why sodium is present in pure dyes, it is mainly due to factors such as raw materials, production and processing, and post-processing, as follows:

[0082] 1. Raw materials

[0083] Impurities in petroleum raw materials: Polyester fiber uses petroleum as its main raw material. During the formation and mining process, petroleum comes into contact with various geological materials and may contain trace amounts of sodium impurities. These impurities may remain during the petroleum refining and subsequent polyester fiber production processes, resulting in the presence of sodium in the final pure polyester product.

[0084] 2. Additives: Various additives are added during the production of polyester fibers, such as antioxidants, light stabilizers, etc.; sodium may be introduced into the production raw materials or synthesis process of some additives; for example, when certain sodium-containing organic compounds are used as additives, sodium will be introduced into polyester fibers.

[0085] 3. Impact of production water: If the water used in the production process contains sodium, such as industrial water that has not been deeply treated and contains a certain amount of sodium salt, in the polymerization and spinning processes of polyester fibers, the water is in full contact with the raw materials, and the sodium element may be adsorbed on the surface of the polyester fiber or enter the interior of the fiber.

[0086] 4. Impact of equipment and pipelines: During long-term use, the materials of production equipment and pipelines may contain sodium elements; for example, some sodium-containing metal coatings, pipeline sealing materials, etc., may fall off and mix into polyester fiber products due to friction, corrosion, etc. during equipment operation.

[0087] 5. Environmental factors: Pure polyester products will come into contact with substances in the surrounding environment during use and storage. If there is sodium-containing dust, gas, etc. in the environment, it may be adsorbed on the surface of the pure polyester, causing it to contain sodium elements. For example, in a seaside environment, sodium chloride particles in the air may adhere to pure polyester clothing.

[0088] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A method for distinguishing waterless dyeing of fabrics, characterized in that: The resolution method comprises the following steps: Sample preparation: Select the sample, prepare the sample into a powder sample tablet, and transfer the prepared powder sample tablet into the X-ray photoelectron spectrometer; Instrument parameter settings: select the X-ray source; set the analyzer parameters, including the energy, scanning step and beam spot size; Data acquisition: Scan the powder sample pellet within a broad spectrum scan range to confirm the Na1s peak position and coexisting elements; set a high-resolution narrow spectrum based on the Na1s peak position, scan the powder sample pellet within the high-resolution narrow spectrum range, and collect a calibration reference for charge correction; Data processing and analysis: The binding energy was calibrated using a calibration benchmark, and peak fitting was performed using software tools. The atomic concentration of the Na element was calculated using the sensitivity factor method with reference to the binding energy, and the anhydrous staining and aqueous staining were distinguished based on the atomic concentration of the Na element and the preset resolution benchmark.

2. The method for distinguishing waterless dyeing of fabrics according to claim 1, wherein: The preset resolution standard is 1%.

3. The method for distinguishing waterless dyeing of fabrics according to claim 2, wherein: The data processing and analysis specifically include: Charge correction: C1s is used as the calibration reference to calibrate binding energy; Background subtraction: Select Shirley or Tougaard background to subtract the contribution of inelastic scattered electrons; Peak fitting: XPSPeak software was used for peak fitting, where the peak shape parameters are as follows: Gaussian-Lorentz mixing ratio: 70-80% Gaussian, 20-30% Lorentzian; half-peak width: 1.0-1.8 eV; Reference binding energy: Na + (NaCl): 1071.5±0.2eV; Na + (Na2CO3): 1072.3±0.3eV; Calculation and analysis: The atomic concentration of the Na element is calculated using the Scofield factor, and it is determined whether the calculated atomic concentration of the Na element exceeds the preset resolution standard. If so, it is determined to be water staining; if not, it is determined to be anhydrous staining.

4. The method for distinguishing waterless dyeing of fabrics according to claim 3, wherein: The preset resolution benchmark includes a first resolution benchmark and a second resolution benchmark, wherein the first resolution benchmark is 0.5% and the second resolution benchmark is 1%; The calculation and analysis are specifically as follows: using the Scofield factor to calculate the atomic concentration of the Na element, judging whether the calculated atomic concentration of the Na element is lower than the first resolution standard, if so, judging it as anhydrous staining; if not, continuing to judge whether the calculated atomic concentration of the Na element exceeds the second resolution standard, if so, judging it as water staining, if not, judging it as pending.

5. The method for distinguishing waterless dyeing of fabrics according to claim 1, wherein: The sample preparation specifically includes: Ultrasonic cleaning and drying of the sample holder are performed in advance; While wearing dust-free gloves, use clean tweezers to clamp the selected sample onto the sample holder; Put the sample holder and the sample into the glove box, and prepare the sample into a powder sample tablet in the glove box; The prepared powder sample pellets were transferred to the X-ray photoelectron spectrometer via a vacuum sealed transfer box.

6. The method for distinguishing waterless dyeing of fabrics according to claim 1, wherein: In the instrument parameter setting, select AlKα monochromatization source as the X-ray source.

7. The method for distinguishing waterless dyeing of fabrics according to claim 1, wherein: In the instrument parameter settings, set the pass energy to 20-40 eV, the scan step to 0.05-0.1 eV, and the beam spot size to 200-500 μm.

8. The method for distinguishing waterless dyeing of fabrics according to claim 1, wherein: The data acquisition also includes: adopting an anti-radiation damage strategy to reduce the power of the X-ray source to below 100W, and superimposing data after multiple scans.

9. The method for distinguishing waterless dyeing of fabrics according to claim 1, wherein: In data acquisition, the broad spectrum scan range was 0–1200 eV, the pass energy was 100–150 eV, and the number of scans was 1–2.

10. The method for distinguishing waterless dyeing of fabrics according to claim 1, wherein: In data acquisition, the range of high-resolution narrow spectrum is 1065-1075eV, the pass energy is 20-40eV, the number of scans is 10-20 times, and the calibration basis of the acquisition is C1s or O1s.

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