阅读说明：本技术 促进棉织物固色染色的方法 (Method for promoting color fixation and dyeing of cotton fabric ) 是由 王力 王灏洁 章金芳 陈万明 张永高 徐华君 张忠 史元庆 于 2020-12-11 设计创作，主要内容包括：本发明公开了一种促进棉织物固色染色的方法,将煮练漂后的棉织物浸于染液及促染剂中,染色时间为20-60min,而后添加碱液,固色时间为20-60min,整个染色及固色过程处于电子束辐射环境中,辐照剂量为5-400kGy,而后进行皂洗干燥。本发明方法可将使促染剂使用量下降50％以上,产品的上染率及固色率较常规染色相比均有提高,色深值提高且所需固色时间减少,固色效率提高,更加高效环保。(The invention discloses a method for promoting color fixation and dyeing of cotton fabrics, which comprises the steps of immersing the boiled, scoured and bleached cotton fabrics in a dye solution and a dyeing accelerant for 20-60min, then adding alkali liquor, fixing the color for 20-60min, enabling the whole dyeing and color fixation process to be in an electron beam radiation environment, enabling the radiation dose to be 5-400kGy, and then soaping and drying. The method can reduce the usage amount of the accelerating agent by more than 50 percent, improve the dye uptake and the fixation rate of the product compared with the conventional dyeing, improve the color depth value, reduce the required fixation time, improve the fixation efficiency, and is more efficient and environment-friendly.)

1. The method for promoting color fixation and dyeing of the cotton fabric is characterized in that the boiled, scoured and bleached cotton fabric is soaked in a dye solution and an accelerating agent, the dyeing time is 20-60min, then alkali liquor is added, the color fixation time is 20-60min, the whole dyeing and color fixation process is in an electron beam radiation environment, the radiation dose is 5-400kGy, and then soaping and drying are carried out.

2. Method for facilitating fixation dyeing of cotton fabrics according to claim 1, characterized in that the energy of the electron beam is 5-10 Mev.

3. Method for facilitating fixation dyeing of cotton fabrics according to claim 1, characterized in that said electron beam is generated by a high energy electron accelerator.

4. The method for promoting color fixation and dyeing of cotton fabrics according to claim 1, wherein the cotton fabrics are fabrics woven by using cotton yarns as raw materials.

5. The method for promoting fixation dyeing of cotton fabrics according to claim 1, characterized in that the dye liquor is Cibacron type F or reactive brilliant red M-3BE or reactive M-7G bright yellow.

6. Method for promoting fixation dyeing of cotton fabrics according to claim 1, characterized in that the dyeing promoter is Na2SO4 or NaCl.

7. Method for facilitating fixation dyeing of cotton fabrics according to claim 1, characterized in that the lye is Na2CO3 or NaOH.

8. The method for promoting fixation dyeing of cotton fabrics according to claim 1, wherein the soap solution is soap flakes or washing powder.

9. The method for promoting fixation and dyeing of cotton fabrics according to claim 1, wherein the irradiation dose is 10-200 kGy.

Technical Field

The invention relates to a method for promoting color fixation and dyeing of cotton fabrics, and belongs to the technical field of cotton fabric dyeing and finishing.

Background

Electron beam radiation is often used for in the rubber field, realizes the emission of energy jointly by an accelerator or a plurality of accelerators, can control the dose through power size, along with opening along with using, and the security is high to high energy electron beam energy is high, and energy dissipation is few when contacting with the object, and the high-usage can effectively utilize the resource, can not release toxic gas in the use, more green.

The cotton fabric is dyed by mainly adopting reactive dye, cotton fibers are negatively charged, and the reactive dye and water also contain negative charge ions, so that a large amount of salt is added in the dyeing process of the cotton fabric to promote the reaction, and alkali is often added to perform the color fixing effect, so that the environment is not friendly, and a great problem is brought to wastewater treatment.

Disclosure of Invention

In order to overcome the defects of large salt consumption and poor color fixing effect of the conventional dyeing process, the invention provides a method for promoting color fixing and dyeing of cotton fabrics, which can reduce the usage amount of an accelerating agent by more than 50 percent, improve the dye uptake and the color fixing rate of a product compared with the conventional dyeing, improve the color depth value, reduce the required color fixing time, improve the color fixing efficiency, and is more efficient and environment-friendly.

The method for promoting color fixing and dyeing of the cotton fabric comprises the steps of soaking the boiled, scoured and bleached cotton fabric in a dye solution and an accelerating agent for 20-60min, then adding an alkali liquor for 20-60min, keeping the whole dyeing and color fixing process in an electron beam radiation environment, and carrying out soaping and drying, wherein the radiation dose is 5-400 kGy.

The energy of the electron beam is 5-10 Mev.

The electron beam is generated by a high energy electron accelerator.

The cotton fabric is a fabric woven by taking cotton yarns as raw materials.

The dye solution is Cibacron F type or reactive brilliant red M-3BE or reactive M-7G bright yellow.

The accelerant is Na₂SO₄Or NaCl.

The alkali liquor is Na₂CO₃Or NaOH.

The soap solution is soap flakes or washing powder.

The irradiation dose is 10-200 kGy.

The invention has the beneficial effects that: the salt consumption and pollution can be reduced in the dyeing process, so that the wastewater is easier to recover; the dyeing rate of the fabric can be improved, the color depth value of the product is increased, and the dyeing effect is better; the color fixing rate is improved, the color fixing time is shortened, the color fixing efficiency is improved, and the color fixing effect is better.

Detailed description of the preferred embodiments

The invention is further described below with reference to examples, but the scope of the invention as claimed is not limited to the scope shown by the examples.

The method for promoting color fixation and dyeing of cotton fabrics comprises the following specific implementation modes:

example 1:

boiling, scouring and bleaching cotton fabric, soaking in active M-7G bright yellow dye and NaCl dyeing accelerant for 30min, taking out, and adding Na₂CO₃And the fixation time is 25 min. The whole dyeing and color fixing process is in an electron beam radiation environment, and the radiation dose is selected to be 30 kGy. Washing with water at room temperature for 3min, washing with water at 50 deg.C for 3min, soaping with washing powder at 90 deg.C for 10min, washing with water at 50 deg.C for 3min, washing with water at room temperature, and oven drying.

TABLE 1 dye liquor and soap liquor formulas

Example 2:

the cotton fabric is soaked in reactive brilliant red M-3BE dye and Na after being boiled, scoured and bleached₂SO₄And in the accelerating agent, dyeing time is 30min, then taking out and adding NaOH, and fixing color for 25 min. The whole dyeing and color fixing process is in an electron beam radiation environment, and the radiation dose is 40 kGy. Washing with water at room temperature for 3minWashing with 50 deg.C water for 3min, soaping with soap flakes at 90 deg.C for 10min, washing with 50 deg.C water for 3min, washing with room temperature water, and oven drying.

TABLE 2 dye liquor and soap liquor formulas

Example 3:

boiling, scouring and bleaching cotton fabric, soaking in active Cibacron F type dye and NaCl dyeing accelerant for 30min, taking out, and adding Na₂CO₃And the fixation time is 20 min. The whole dyeing and color fixing process is in an electron beam radiation environment, and the radiation dose is selected to be 50 kGy. Washing with water at room temperature for 3min, washing with water at 50 deg.C for 3min, soaping with soap flakes at 90 deg.C for 10min, washing with water at 50 deg.C for 3min, washing with water at room temperature, and oven drying.

TABLE 3 dye liquor and soap liquor formulas

The products obtained in example 1, example 2 and example 3 were subjected to the performance tests of depth of color, dye uptake and fixation:

table 1 product Performance test results

From the above table it can be found that:

in examples 1 to 3, the dye-uptake time was 30min, and after irradiation with electron beams during the dyeing process, the dye was more likely to generate radicals and to adhere to the fabric, the dye uptake was increased, and at the same time, the dye depth was increased and the color depth value was increased. Meanwhile, the color fixing rate can be improved while the required color fixing time is reduced, and the dyeing performance of the product is ensured.

The above description is only a preferred experimental way of the present invention, and it should be noted that, for those skilled in the art, several modifications and amendments made without departing from the principle of the present invention shall be considered as the protection scope of the present invention.