阅读说明：本技术 一种白竹炭纤维的染色方法 (Dyeing method of white bamboo charcoal fiber ) 是由 艾绳瑞 于 2019-10-24 设计创作，主要内容包括：本发明公开了一种白竹炭纤维的染色方法,步骤包括(1)采用轧蒸一浴法对白竹炭涤纶纤维进行退浆处理；(2)、将退浆处理后的白竹炭涤纶纤维投入含有匀染剂的染色溶液中进行染色处理；(3)、将染色处理后的白竹炭涤纶纤维投入碱减量溶液中进行碱减量处理；(4)、将碱减量处理后的白竹炭涤纶纤维投入还原清洗液中进行还原清洗处理、烘干。本发明一种竹炭纤维的染色方法的有益效果：能够减少染整工艺对竹炭保健功能的影响,增加上染率和色牢度及手感柔软性能,并且可以采用多种染料,由此得到不同颜色的纤维和织物。(The invention discloses a dyeing method of white bamboo charcoal fiber, which comprises the steps of (1) desizing the white bamboo charcoal polyester fiber by adopting a rolling and steaming one-bath method; (2) putting the desized white bamboo charcoal polyester fiber into a dyeing solution containing a leveling agent for dyeing; (3) putting the dyed white bamboo charcoal polyester fiber into an alkali decrement solution for alkali decrement treatment; (4) and putting the white bamboo charcoal polyester fiber subjected to alkali decrement treatment into a reduction cleaning solution for reduction cleaning treatment and drying. The dyeing method of the bamboo charcoal fiber has the beneficial effects that: the method can reduce the influence of dyeing and finishing processes on the health care function of the bamboo charcoal, increase the dye uptake, color fastness and soft hand feeling, and can adopt various dyes, thereby obtaining fibers and fabrics with different colors.)

1. The dyeing method of the white bamboo charcoal fiber is characterized by comprising the following steps:

step 1, desizing white bamboo charcoal polyester fibers by adopting a rolling and steaming one-bath method;

step 2, putting the desized white bamboo charcoal polyester fiber into a dyeing solution containing a leveling agent for dyeing;

step 3, putting the dyed white bamboo charcoal polyester fiber into an alkali decrement solution for alkali decrement treatment;

and 4, putting the white bamboo charcoal polyester fiber subjected to alkali decrement treatment into a reduction cleaning solution for reduction cleaning treatment and drying.

2. The dyeing method of white bamboo charcoal fiber according to claim 1, wherein the concentration of desizing enzyme in step 1 is 3-5 g/L, the steaming temperature is 110-112 ℃, and the steaming time is 45-55 min.

3. The dyeing method of white bamboo charcoal fiber according to claim 1, wherein the leveling agent in step 2 is prepared by the following method:

(1) mixing N, N-dimethylethanolamine, N-phenyl-2-naphthylamine, triethanolamine, triphenylmethane triisocyanate, ethoxylated lanolin and a toluene solution according to a mass ratio of 230:2:2:1:50:1000 to obtain a mixed solution 1;

(2) mixing octadecyl isocyanate and toluene according to the mass ratio of 2:5 to obtain a mixed solution 2;

(3) mixing the mixed solution 1 and the mixed solution 2 according to the mass ratio of 0.4-0.6: 1, and reacting at 78-80 ℃ for 4-5 h to obtain a mixed solution 3;

(4) and uniformly mixing the mixed solution 3, benzyl chloride and toluene according to the mass ratio of 40:3:8 to obtain the leveling agent.

4. The method for dyeing white bamboo charcoal fiber according to claim 3, wherein the dyeing solution comprises a reactive dye, anhydrous sodium sulphate, ammonium sulphate, a dispersant and a leveling agent, wherein the concentration of the reactive dye is 1-5%, the concentration of the anhydrous sodium sulphate is 2-5%, the concentration of the ammonium sulphate is 0.1-0.5%, the concentration of the dispersant is 0.1-0.2%, and the concentration of the leveling agent is 5-10%.

5. The dyeing method of white bamboo charcoal fiber according to claim 1, characterized in that the dyeing conditions of step 2 are as follows: the bath ratio is 1: 40-1: 50, the initial dyeing temperature is adjusted to be 40-60 ℃, then the temperature is increased to 120-140 ℃ at the speed of 1-2 ℃/min, the temperature is kept for 40-70 min, and then the temperature is reduced to 60-80 ℃ at the speed of 2-3 ℃/min.

6. The method for dyeing white bamboo charcoal fiber according to claim 1, wherein the pH value of the dyeing in the step 2 is 4.5-6.0.

7. The method for dyeing white bamboo charcoal fiber according to claim 1, wherein the alkali weight reduction solution in the step 1 is an aqueous solution of sodium hydroxide and an accelerator, wherein the concentration of the sodium hydroxide is 2-6%, and the concentration of the accelerator is 0.2-0.4%.

Technical Field

The invention belongs to the technical field of dyeing, and particularly relates to a dyeing method of white bamboo charcoal fibers.

Background

The bamboo charcoal has loose and porous structure, fine and porous molecules, hard texture and strong adsorption capacity, can purify air, eliminate peculiar smell, absorb moisture, prevent mildew, inhibit bacteria and expel parasites, can remove moisture and sweat when contacting with a human body, promotes blood circulation and metabolism of the human body and relieves fatigue.

In recent years, a new fiber variety is produced by selecting nano bamboo charcoal powder (bamboo charcoal micro powder), adding the nano bamboo charcoal powder into a slice melt or a spinning solution through a special process, and spinning through a near-spinneret plate. The polyester fiber is an important variety of synthetic fiber due to the excellent characteristics of high strength, good elasticity, heat resistance, corrosion resistance and the like and low manufacturing cost, and has extremely high market share, so the research of the bamboo charcoal polyester fiber becomes possible.

However, due to the characteristics of bamboo charcoal fiber, the product is gray or black and the color is monotonous, so it is necessary to study a dyeing method of white bamboo charcoal fiber.

Disclosure of Invention

The invention aims to provide a dyeing method of white bamboo charcoal fibers, which solves the problem of dyeing color difference of the white bamboo charcoal fibers in the prior art.

The technical scheme adopted by the invention is that the dyeing method of the white bamboo charcoal fiber is implemented according to the following steps:

step 1, desizing white bamboo charcoal polyester fibers by adopting a rolling and steaming one-bath method;

step 2, putting the desized white bamboo charcoal polyester fiber into a dyeing solution containing a leveling agent for dyeing;

step 3, putting the dyed white bamboo charcoal polyester fiber into an alkali decrement solution for alkali decrement treatment;

and 4, putting the white bamboo charcoal polyester fiber subjected to alkali decrement treatment into a reduction cleaning solution for reduction cleaning treatment and drying.

The invention is also characterized in that:

the concentration of desizing enzyme in the step 1 is 3-5 g/L, the steaming temperature is 110-112 ℃, and the time is 45-55 min.

The leveling agent in the step 2 is prepared by the following method:

(1) mixing N, N-dimethylethanolamine, N-phenyl-2-naphthylamine, triethanolamine, triphenylmethane triisocyanate, ethoxylated lanolin and a toluene solution according to a mass ratio of 230:2:2:1:50:1000 to obtain a mixed solution 1;

(2) mixing octadecyl isocyanate and toluene according to the mass ratio of 2:5 to obtain a mixed solution 2;

(3) mixing the mixed solution 1 and the mixed solution 2 according to the mass ratio of 0.4-0.6: 1, and reacting at 78-80 ℃ for 4-5 h to obtain a mixed solution 3;

(4) and uniformly mixing the mixed solution 3, benzyl chloride and toluene according to the mass ratio of 40:3:8 to obtain the leveling agent.

The dyeing solution comprises a reactive dye, anhydrous sodium sulphate, ammonium sulfate, a dispersing agent and a leveling agent, wherein the concentration of the reactive dye is 1-5%, the concentration of the anhydrous sodium sulphate is 2-5%, the concentration of the ammonium sulfate is 0.1-0.5%, the concentration of the dispersing agent is 0.1-0.2%, and the concentration of the leveling agent is 5-10%.

The dyeing conditions of the step 2 are as follows: the bath ratio is 1: 40-1: 50, the initial dyeing temperature is adjusted to be 40-60 ℃, then the temperature is increased to 120-140 ℃ at the speed of 1-2 ℃/min, the temperature is kept for 40-70 min, and then the temperature is reduced to 60-80 ℃ at the speed of 2-3 ℃/min.

The pH value of the dyeing solution in the step 2 is 4.5-6.0.

In the step 1, the alkali decrement solution is an aqueous solution of sodium hydroxide and an accelerant, wherein the concentration of the sodium hydroxide is 2-6%, and the concentration of the accelerant is 0.2-0.4%.

The invention has the beneficial effects that: the dyeing method adopts a rolling and steaming one-bath process to desize the fibers, is more environment-friendly, can reduce the influence of a dyeing and finishing process on the health care function of the bamboo charcoal, increases the dye uptake, the color fastness and the soft hand feeling, and can adopt various dyes, thereby obtaining the fibers and fabrics with different colors.

Detailed Description

The present invention will be described in detail with reference to the following embodiments.

The invention relates to a dyeing method of white bamboo charcoal fiber, which is implemented according to the following steps:

step 1, desizing the white bamboo charcoal polyester fiber by adopting a roll-steaming one-bath method, wherein the concentration of desizing enzyme is 3-5 g/L, the steaming temperature is 110-112 ℃, and the time is 45-55 min.

The pad steaming-method desizing-boiling-bath process can remove pulp and natural impurities on the fiber to the maximum extent, is more beneficial to subsequent dyeing and achieves pure and plump color and luster effects, the traditional alkali treatment is to carry out roughening pretreatment on the fiber through alkali liquor so as to etch and hydrolyze the surface of the amine fiber, the micro roughness, the contact area and the hydrophilic capacity of the surface of the fiber are increased, and then disperse dye dyeing is carried out by utilizing the dye carrying effect of a carrier under the condition of a high-temperature high-pressure method, so that the environment is polluted.

Step 2, putting the desized white bamboo charcoal polyester fiber into a dyeing solution containing a leveling agent for dyeing;

leveling agents are mostly water-soluble surfactants, and are mainly classified into two types according to their influence on dye diffusion and aggregation: (1) the dye-levelling agent is a fiber-philic levelling agent, which hardly influences the aggregation degree of the dye, but has higher affinity to the fiber than the dye, so that the levelling agent can be firstly combined with the fiber in the dyeing process to reduce the dye-uptake rate, but the dye can gradually replace the levelling agent and is fixed on the fiber along with the change of the dyeing condition, and the levelling agent only has the function of slow dyeing; (2) dye-philic levelling agents which significantly increase the degree of dye aggregation, with a greater affinity for the dye than for the fibre, prior to dye uptake. The levelling agent combines with the dye first to form a stable aggregate, thereby reducing the diffusion rate of the dye and delaying the dyeing time. The dye is gradually separated from the leveling agent along with the change of the conditions and is combined with the fiber, but the leveling agent still has certain affinity to the dye at the moment, and the dye can be pulled down from the fiber and dyed to a place with light color for the non-leveling fabric, so that the leveling agent not only has the dyeing retarding effect, but also has the dye transfer effect. The invention adopts dye-philic leveling agent.

The preparation method comprises the following steps:

(1) mixing N, N-dimethylethanolamine, N-phenyl-2-naphthylamine, triethanolamine, triphenylmethane triisocyanate, ethoxylated lanolin and a toluene solution according to a mass ratio of 230:2:2:1:50:1000 to obtain a mixed solution 1;

(2) mixing octadecyl isocyanate and toluene according to the mass ratio of 2:5 to obtain a mixed solution 2;

(3) mixing the mixed solution 1 and the mixed solution 2 according to a mass ratio of 0.4-0.6: 1, and reacting at 78-80 ℃ for 4-5 h to obtain a mixed solution 3;

(4) and uniformly mixing the mixed solution 3, benzyl chloride and toluene according to the mass ratio of 40:3:8 to obtain the leveling agent.

The dyeing solution comprises reactive dye, anhydrous sodium sulphate, ammonium sulfate, a dispersing agent and a leveling agent, wherein the concentration of the reactive dye is 1-5%, the concentration of the anhydrous sodium sulphate is 2-5%, the concentration of the ammonium sulfate is 0.1-0.5%, the concentration of the dispersing agent is 0.1-0.2%, and the concentration of the leveling agent is 5-10%.

Wherein, the dyeing conditions are as follows: the bath ratio is 1: 40-1: 50, the initial dyeing temperature is adjusted to be 40-60 ℃, then the temperature is increased to 120-140 ℃ at the speed of 1-2 ℃/min, the temperature is kept for 40-70 min, and then the temperature is reduced to 60-80 ℃ at the speed of 2-3 ℃/min.

Wherein the pH value of the dyeing solution is 4.5-6.0

Step 3, putting the dyed white bamboo charcoal polyester fiber into an alkali decrement solution for alkali decrement treatment;

wherein the alkali weight reduction solution is an aqueous solution of sodium hydroxide and an accelerator, the concentration of the sodium hydroxide is 2-6%, and the concentration of the accelerator is 0.2-0.4%.

And 4, putting the white bamboo charcoal polyester fiber subjected to alkali decrement treatment into a reduction cleaning solution for reduction cleaning treatment and drying.