阅读说明：本技术 一种超临界二氧化碳染色固化方法 (Supercritical carbon dioxide dyeing and curing method ) 是由 黄兴 于 2019-09-29 设计创作，主要内容包括：本发明提供一种超临界二氧化碳染色固化方法,涉及染色固化方法技术领域。包括以下步骤：布料染色：将布料放入到染色装置中,往染色装置中加入分散染料,其中分散染料的质量为布料质量的1％-3％,加入固色剂,固色剂质量是分散染料质量的5-8％；同时往染色装置中通入二氧化碳超临界流体,并且控制染色装置内部的温度为130-160℃,压力为9-12MPa,染色时间为40-50分钟；降温出料：然后在保持临界温度不变的情况下,通过装置中的排泄阀缓慢地释放出干燥介质二氧化碳流体,同时利用风冷装置对干燥装置内部进行降温,等到布料温度到35℃左右时,取出布料并将其在自然条件下放置4-6小时。(the invention provides a supercritical carbon dioxide dyeing and curing method, and relates to the technical field of dyeing and curing methods. The method comprises the following steps: cloth dyeing: putting the cloth into a dyeing device, adding a disperse dye into the dyeing device, wherein the mass of the disperse dye is 1-3% of the mass of the cloth, and adding a color fixing agent, and the mass of the color fixing agent is 5-8% of the mass of the disperse dye; simultaneously introducing carbon dioxide supercritical fluid into the dyeing device, controlling the temperature inside the dyeing device to be 130-160 ℃, the pressure to be 9-12MPa, and the dyeing time to be 40-50 minutes; cooling and discharging: and then, under the condition of keeping the critical temperature unchanged, slowly releasing a drying medium carbon dioxide fluid through a discharge valve in the device, simultaneously cooling the interior of the drying device by using an air cooling device, and taking out the cloth and placing the cloth for 4-6 hours under natural conditions when the temperature of the cloth reaches about 35 ℃.)

1. A supercritical carbon dioxide dyeing and curing method is characterized by comprising the following steps: cloth dyeing: putting the cloth into a dyeing device, adding a disperse dye into the dyeing device, wherein the mass of the disperse dye is 1-3% of the mass of the cloth, and adding a color fixing agent, and the mass of the color fixing agent is 5-8% of the mass of the disperse dye; simultaneously introducing carbon dioxide supercritical fluid into the dyeing device, controlling the temperature inside the dyeing device to be 130-160 ℃, the pressure to be 9-12MPa, and the dyeing time to be 40-50 minutes;

cooling and discharging: and then, under the condition of keeping the critical temperature unchanged, slowly releasing a drying medium carbon dioxide fluid through a discharge valve in the device, simultaneously cooling the interior of the drying device by using an air cooling device, and taking out the cloth and placing the cloth for 4-6 hours under natural conditions when the temperature of the cloth reaches about 35 ℃.

2. The supercritical carbon dioxide dyeing and curing method according to claim 1, wherein a condensate of dimethylamine, diethylenetriamine or the like with epichlorohydrin or a fixing agent obtained by condensing ammonia, monomethylamine, dimethylamine with epichlorohydrin is used. The mass of the color fixing agent is 5-8% of that of the disperse dye.

3. The supercritical carbon dioxide dyeing and curing method according to claim 1, wherein the fabric before dyeing is treated with sodium benzoylmercaptoacetate, the terylene is padded with 150-300g/L sodium benzoylmercaptoacetate, a solution of 20g/L sodium carbonate is additionally added, the carrying liquid rate is 80%, and after padding, the fabric is dried in the air at room temperature and then is dried in the air at 150-200 ℃ for 1-2 min.

4. the supercritical carbon dioxide dyeing and curing method according to any one of claims 1 to 3, wherein a proper amount of dispersing agent is added while dispersing the dye, and the component ratio is 120 to 150 parts of the dispersing dye, and the dispersing agent accounts for 1 to 2 percent of the mass of the dispersing dye.

5. the supercritical carbon dioxide dyeing and curing method according to any one of claims 1 to 3, wherein the carbon dioxide fluid is recovered and recycled when the drying medium carbon dioxide fluid is released.

Technical Field

The invention relates to the technical field of dyeing and curing methods, in particular to a supercritical carbon dioxide dyeing and curing method.

background

The carbon dioxide is converted into a supercritical state under the conditions that the temperature is higher than the critical temperature (31.26 ℃) and the pressure is higher than the critical pressure (72.9atm), a gas-liquid two-phase interface disappears, the density is close to liquid, the viscosity is close to gas, and the diffusion coefficient is 100 times of that of the liquid, so that the carbon dioxide has surprising dissolving capacity, and meanwhile, the carbon dioxide is non-toxic and low in cost, so that the carbon dioxide is widely applied to the textile industry.

In many textile enterprises, the supercritical carbon dioxide technology can be used for dyeing and drying cloth, and when the supercritical carbon dioxide technology is used for drying, the quality of the dried cloth can be improved.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a supercritical carbon dioxide dyeing and curing method, which solves the problems that the dyeing quality of a plurality of enterprises using supercritical carbon dioxide needs to be further improved and the working efficiency is low.

In order to achieve the above object, the present invention is implemented by the following technical solutions: a supercritical carbon dioxide dyeing and curing method comprises the following steps:

Cloth dyeing: putting the cloth into a dyeing device, adding a disperse dye into the dyeing device, wherein the mass of the disperse dye is 1-3% of the mass of the cloth, and adding a color fixing agent, and the mass of the color fixing agent is 5-8% of the mass of the disperse dye; simultaneously introducing carbon dioxide supercritical fluid into the dyeing device, controlling the temperature inside the dyeing device to be 130-160 ℃, the pressure to be 9-12MPa, and the dyeing time to be 40-50 minutes;

cooling and discharging: and then, under the condition of keeping the critical temperature unchanged, slowly releasing a drying medium carbon dioxide fluid through a discharge valve in the device, simultaneously cooling the interior of the drying device by using an air cooling device, and taking out the cloth and placing the cloth for 4-6 hours under natural conditions when the temperature of the cloth reaches about 35 ℃.

preferably, the fabric before dyeing is treated by sodium benzoylmercaptoacetate, the terylene is padded with 150-300g/L sodium benzoylmercaptoacetate, a solution of 20g/L sodium carbonate is additionally added, the carrying liquid rate is 80%, and after padding, the fabric is dried at room temperature and then is dried for 1-2min at 150-200 ℃. Adding a proper amount of dispersing agent while adding the disperse dye, wherein the component ratio of the dispersing agent to the disperse dye is 120-150 parts. The dispersing agent is 12 alkyl sodium sulfonate. Is 1-2% of the mass of the disperse dye.

The color fixing agent is prepared by using condensation products of dimethylamine, diethylenetriamine and the like and epichlorohydrin, or using condensation products of ammonia, monomethylamine, dimethylamine and epichlorohydrin. The mass of the color fixing agent is 5-8% of that of the disperse dye.

Preferably, the disperse dye can also be used for preparing a dispersing agent, and the proportion is 135 parts of the disperse dye and 20 parts of the dispersing agent.

Preferably, the carbon dioxide fluid is recovered and treated when the carbon dioxide fluid of the drying medium is released, and the carbon dioxide fluid is recycled.

The working principle is as follows: putting the cloth into a dyeing device, adding a disperse dye into the dyeing device, wherein the mass of the disperse dye is 1% -3% of the mass of the cloth, introducing a carbon dioxide supercritical fluid into the dyeing device, controlling the temperature inside the dyeing device to be 130-160 ℃, the pressure to be 9-12MPa, and the dyeing time to be 40-50 minutes.

Has the advantages that:

The invention provides a supercritical carbon dioxide dyeing and curing method. The method has the following beneficial effects: according to the supercritical carbon dioxide dyeing and curing method, the supercritical carbon dioxide technology and the pretreatment technology are combined, and the fabric is subjected to waterless rapid dyeing and color fixing, so that the quality of fabric drying treatment is greatly improved. According to the supercritical carbon dioxide dyeing and curing method, the cloth is uniformly rotated, so that the cloth and the supercritical fluid can be rapidly contacted, and the drying time is greatly shortened. Under the conditions of the color fixing agent, the disperse dye and the pretreatment, good effects can be obtained as long as the pretreatment and the formula are adopted, the temperature is 130-160 ℃, the pressure is 9-12MPa, and the dyeing time is 40-50 minutes, and the indexes of the color fastness, the weather resistance and the like of the water-based printing and dyeing agent reach the same indexes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to different embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.