Method for promoting fixation and dyeing of cotton fabric

A technology of cotton fabric and dyeing accelerator, applied in the field of cotton fabric dyeing and finishing, can solve the problems of poor color fixation effect and large salt consumption, achieve better dyeing effect, reduce salt consumption, and increase color depth value Effect

CN112663364AInactive Publication Date: 2021-04-16浙江灏宇科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-04-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for promoting fixation and dyeing of cotton fabric. The method comprises the following steps that a boiled and bleached cotton fabric is soaked in a dye solution and an accelerating agent, the dyeing time is 20 to 60 minutes, then an alkali solution is added, fixation is carried out for 20 to 60 minutes, wherein the whole dyeing and fixation process is kept in an electron beam radiation environment with the irradiation dose of 5-400 kGy, and then soaping and drying are carried out. According to the method, the usage amount of the accelerating agent can be reduced by 50% or above, the dye-uptake rate and the fixation rate of a product are increased compared with those of conventional dyeing, the color depth value is increased, the needed fixation time is shortened, the fixation efficiency is improved, and the method is more efficient and environmentally friendly.
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Description

technical field

[0001] The invention relates to a method for promoting solid color dyeing of cotton fabrics, belonging to the technical field of cotton fabric dyeing and finishing. Background technique

[0002] Electron beam radiation is often used in the field of rubber. The emission of energy is realized by one accelerator or multiple accelerators. The dose can be controlled by the power level. There is less energy loss when objects are in contact, and the utilization rate is high, which can effectively use resources and will not release toxic gases during use, making it more environmentally friendly.

[0003] Cotton fabrics are mainly dyed with reactive dyes. Cotton fibers are negatively charged, and reactive dyes and water also contain negative ions. Therefore, a large amount of salt needs to be added to promote the reaction during the dyeing process of cotton fabrics. Alkali is often added to fix the color. The environment is very unfriendly and poses great problems fo...

Examples

Embodiment 1

[0019] After scouring and bleaching, the cotton fabric is soaked in reactive M-7G bright yellow dye and NaCl dyeing accelerator. The dyeing time is 30 minutes, and then taken out and added with NaCl 2 CO 3 , Fixing time is 25min. The entire dyeing and color fixing process is in an electron beam radiation environment, and the radiation dose is selected as 30kGy. Wash with water at room temperature for 3 minutes, at 50°C for 3 minutes, at 90°C with washing powder soap for 10 minutes, then at 50°C for 3 minutes, then wash and dry at room temperature.

[0020] Table 1 dye solution and soap solution formula

[0021]

Embodiment 2

[0023] Cotton fabric soaked in reactive brilliant red M-3BE dye and Na 2 SO 4 In the dyeing accelerator, the dyeing time is 30 minutes, then take out and add NaOH, and the color fixing time is 25 minutes. The entire dyeing and color fixing process is in an electron beam radiation environment, and the radiation dose is selected as 40kGy. Wash with water at room temperature for 3 minutes, at 50°C for 3 minutes, at 90°C with soap flakes for 10 minutes, then at 50°C for 3 minutes, then at room temperature and dry.

[0024] Table 2 dye solution and soap solution formula

[0025]

Embodiment 3

[0027] After scouring and bleaching, the cotton fabric is soaked in reactive Cibacron F dye and NaCl dyeing accelerator for 30 minutes, and then taken out and added with NaCl 2 CO 3 , Fixing time is 20min. The entire dyeing and color fixing process is in an electron beam radiation environment, and the radiation dose is selected as 50kGy. Wash with water at room temperature for 3 minutes, at 50°C for 3 minutes, at 90°C with soap flakes for 10 minutes, then at 50°C for 3 minutes, then at room temperature and dry.

[0028] Table 3 dye solution and soap solution formula

[0029]