阅读说明：本技术 一种羊毛织物的媒染染色工艺 (Mordant dyeing process of wool fabric ) 是由 曹秀明 陆晓明 黄建刚 王榴兴 朱燕红 温欣婷 陆芳 于 2020-08-20 设计创作，主要内容包括：本发明公开了一种羊毛织物的媒染染色工艺,包括以下步骤：S1：将羊毛织物浸渍于预处理液中反应,浸轧烘干并在120～130℃下焙烘0.5～3min；S2：采用酸性媒介染料溶液加热上染S1所得羊毛织物,水洗；S3：对S2所得水洗后的羊毛织物加热媒染处理,皂洗水洗,得到染色羊毛织物；S1中的预处理液主要组成包含柠檬酸、次亚磷酸钠、水溶性含羟基的有机磷酸钠以及渗透剂。该羊毛织物的媒染染色工艺首先在羊毛织物纤维表面引入更多以及配位能力更强的基团,然后对羊毛织物进行酸性媒介染料的上染媒染处理；染色工艺能提高酸性媒介染料对羊毛织物的上染率,染色羊毛织物具有良好的皂洗牢度。(The invention discloses a mordant dyeing process of wool fabric, which comprises the following steps: s1: soaking the wool fabric in the pretreatment solution for reaction, padding and drying, and baking at 120-130 ℃ for 0.5-3 min; s2: heating and dyeing the wool fabric obtained in the S1 by adopting an acid mordant dye solution, and washing with water; s3: heating, mordanting and washing the washed wool fabric obtained in the step S2 to obtain a dyed wool fabric; the pretreatment liquid in S1 mainly comprises citric acid, sodium hypophosphite, water-soluble organic sodium phosphate containing hydroxyl and a penetrating agent. The mordant dyeing process of the wool fabric firstly introduces more groups with stronger coordination capability on the surface of the wool fabric fiber, and then carries out the dyeing mordant dyeing treatment of acid mordant dye on the wool fabric; the dyeing process can improve the dye-uptake of the acid mordant dye to wool fabrics, and the dyed wool fabrics have good soaping fastness.)

1. A mordant dyeing process of wool fabric is characterized by comprising the following steps:

s1: soaking the wool fabric in the pretreatment solution for reaction, padding and drying, and baking at 120-130 ℃ for 0.5-3 min;

s2: heating and dyeing the wool fabric obtained in the S1 by adopting an acid mordant dye solution, and washing with water;

s3: heating, mordanting and washing the washed wool fabric obtained in the step S2 to obtain a dyed wool fabric;

the pretreatment liquid in the S1 mainly comprises citric acid, sodium hypophosphite, water-soluble organic sodium phosphate containing hydroxyl and a penetrating agent.

2. A mordant dyeing process for wool fabrics according to claim 1 wherein the water-soluble hydroxyl-containing sodium organophosphate is sodium glycerophosphate.

3. A mordant dyeing process for wool fabrics according to claim 1, characterized in that the pretreatment liquid mainly comprises, by weight, 100 parts of water, 0.3-1.5 parts of citric acid, 0.2-1 part of sodium hypophosphite, 2-7 parts of water-soluble organic sodium phosphate containing hydroxyl groups and 0.1-2 parts of penetrant.

4. A mordant dyeing process for wool fabrics according to claim 1 characterized in that the acid mordant dye solution consists essentially of dye and sodium sulfate; the mass ratio of the dye to the wool fabric in the acid mordant dye solution is (0.02-0.1): 1, the mass ratio of the sodium sulfate in the acid mordant dye solution to the wool fabric is (0.002-0.008): 1; the pH value of the acid mordant dye solution is 3.0-4.5; the dyeing temperature of the acid mordant dye solution is 85-98 ℃.

5. The mordant dyeing process of a wool fabric according to claim 1, wherein the mordant treatment is to dip the dyed wool fabric into a mordant treatment solution, and the ratio of the mass of the mordant in the mordant treatment solution to the mass of the wool fabric is (0.02-0.08): 1, the pH value of the mordant treatment liquid is 4.2-5.

6. A mordant dyeing process for wool fabrics according to claim 5 wherein the mordant is an aluminium mordant and/or a zinc mordant.

7. A mordant dyeing process of wool fabrics according to claim 5, characterized in that the mordant treatment liquid also comprises a mordant accelerator which is sodium hydroxyethyl sulfonate and/or salicylic acid.

8. A mordant dyeing process for wool fabrics according to claim 7, characterized in that the mass ratio of mordant to mordant accelerator in the mordant treatment liquid is 1: (0.1-0.3).

9. A mordant dyeing process for wool fabrics according to any one of claims 1 to 8, characterized in that the temperature of the mordant treatment is 95 to 100 ℃.

Technical Field

The invention relates to the technical field of wool worsted fabric production, in particular to a mordant dyeing process of wool fabric.

Background

The mordant mechanism is mainly that a mordant such as metal ions is used as central ions to be matched with the dye and a ligand on the fiber to form a complex, and the dye is better dyed by utilizing the bridge function of the metal ions between the dye and the fiber. The mordant used for dyeing wool fabric with acid mordant dye is mainly dichromate, aluminum salt, copper salt and cobalt salt.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a mordant dyeing process of wool fabric, which introduces more coordination groups on the fiber surface of the wool fabric through pretreatment, and is beneficial to improving the dye uptake and improving the color fastness.

In order to achieve the technical effects, the technical scheme of the invention is as follows: a mordant dyeing process of wool fabric is characterized by comprising the following steps:

s1: soaking the wool fabric in the pretreatment solution for reaction, padding and drying, and baking at 120-130 ℃ for 0.5-3 min;

s2: heating and dyeing the wool fabric obtained in the S1 by adopting an acid mordant dye solution, and washing with water;

s3: heating, mordanting and washing the washed wool fabric obtained in the step S2 to obtain a dyed wool fabric;

the pretreatment liquid in the S1 mainly comprises citric acid, sodium hypophosphite, water-soluble organic sodium phosphate containing hydroxyl and a penetrating agent. The temperature of the pretreatment liquid for dipping the wool fabric is preferably 40-60 ℃.

The range of choice for the organic sodium phosphate containing hydroxyl groups includes sodium glycerophosphate, as well as sodium glucose phosphate, sodium fructose diphosphate, and the like.

The preferable technical scheme is that the water-soluble hydroxyl-containing sodium organophosphate is sodium glycerophosphate. The micromolecular sodium glycerophosphate introduces more coordination groups to the surface of wool. Compared with sodium glucose phosphate and fructose diphosphate, the wool fabric acid mordant dye pretreated by the sodium glycerophosphate has higher dye uptake under the same dyeing process condition.

The preferable technical scheme is that the pretreatment liquid mainly comprises, by weight, 100 parts of water, 0.3-1.5 parts of citric acid, 0.2-1 part of sodium hypophosphite, 2-7 parts of water-soluble organic sodium phosphate containing hydroxyl and 0.1-2 parts of a penetrating agent. Sodium hypophosphite can promote the reaction of citric acid and organic sodium phosphate with hydroxyl and carboxyl on the surface of wool fiber in wool fabric under the baking condition.

The preferable technical proposal is that the acid mordant dye solution mainly comprises dye and sodium sulfate; the mass ratio of the dye to the wool fabric in the acid mordant dye solution is (0.02-0.1): 1, the mass ratio of the sodium sulfate in the acid mordant dye solution to the wool fabric is (0.002-0.008): 1; the pH value of the acid mordant dye solution is 3.0-4.5; the dyeing temperature of the acid mordant dye solution is 85-98 ℃. The acid mordant dye is typically a vegetable dye. The dyeing temperature of the acid mordant dye solution can adopt a heating mode of slowly heating up and then preserving heat in the prior art, and can also be quickly heated up to a certain temperature and then preserved heat for dyeing.

The preferred technical scheme is that the mordant treatment is to dip the dyed wool fabric into a mordant treatment solution, wherein the ratio of the mass of a mordant in the mordant treatment solution to the mass of the wool fabric is (0.02-0.08): 1, the pH value of the mordant treatment liquid is 4.2-5. The range of mordants selected includes the common dichromate, aluminum, copper, cobalt and zinc salts.

The preferable technical scheme is that the mordant is an aluminum mordant and/or a zinc mordant. The aluminum mordant and the zinc mordant have good coordination capacity on the surface groups of the pretreated wool fabric fibers.

The preferable technical scheme is that the mordant treatment liquid also comprises a mordant accelerator, and the mordant accelerator is sodium hydroxyethyl sulfonate and/or salicylic acid. In the later stage of mordant reaction, hydroxyethyl sulfonate ions and salicylic acid both have anion property in mordant treatment liquid, are coordinated and complexed with mordant cations and enter fibers, and the transmission of the mordant cations from the solution to the fibers is realized. The hydroxyethyl sodium sulfonate and salicylic acid can be used in combination or independently. Further preferably, the mordant is sodium isethionate.

The preferable technical scheme is that the mass ratio of the mordant to the mordant accelerator in the mordant treatment liquid is 1: (0.1-0.3).

The preferable technical scheme is that the temperature of mordant dyeing treatment is 95-100 ℃.

The invention has the advantages and beneficial effects that:

the mordant dyeing process of the wool fabric comprises the steps of firstly pretreating the wool fabric, introducing more groups with stronger coordination capacity on the fiber surface of the wool fabric, and then dyeing and mordant dyeing the pretreated wool fabric by using acid mordant dye;

the mordant dyeing process can improve the dye uptake of the acid mordant dye to wool fabrics, and the prepared dyed wool fabrics have good soaping fastness.

Detailed Description

The following further describes embodiments of the present invention with reference to examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

Serge dyeing, the source of the fabric is: jiangsu sunshine group;

sodium glycerophosphate, sodium sulfate, sodium glucose phosphate, citric acid, sodium hypophosphite, a penetrating agent JFC, an aluminum mordant, aluminum nitrate, a zinc mordant, zinc sulfate and salicylic acid, which are all chemically pure. The acid mordant dye is mordant red S-80, and the hydroxyethyl sodium sulfonate is sold in the market, and the content is more than 98 percent.