阅读说明：本技术 一种涤纶遮阳面料的少水染色方法 (Little-water dyeing method for polyester sun-shading fabric ) 是由 梁金桓 苗大刚 王宜增 马建伟 孙金林 陈韶娟 王雪梅 于 2019-11-04 设计创作，主要内容包括：本发明涉及一种涤纶遮阳面料的少水染色方法,该方法包括1)制备染液：常温下将染料10g/L,粘合剂40g/L-80g/L,防泳移剂5-20g/L,润湿剂10g/L混合均匀；2)浸轧：将涤纶织物浸入染液中,一浸一轧,轧余率为80%-100%；3)预烘：将得到的涤纶遮阳面料在烘箱里进行预烘,预烘温度110-130℃,预烘时间6-10min；4)焙烘：将得到的涤纶遮阳面料于常压下通过定型机进行焙烘,焙烘温度170℃-190℃,焙烘时间3min-6min。本发明是对涤纶遮阳面料染色方法的改进,具有少水染色并且免水洗、产品色牢度好的特点,以及节水、节能,减少污水排放,降低成本,在清洁生产领域有重要的意义。(The invention relates to a little water dyeing method of a terylene sun-shading fabric, which comprises the following steps of 1) preparing dye liquor: uniformly mixing 10g/L of dye, 40g/L-80g/L of adhesive, 5 g/L-20 g/L of anti-migration agent and 10g/L of wetting agent at normal temperature; 2) padding: soaking the polyester fabric into the dye solution, and soaking and rolling the polyester fabric once, wherein the rolling residual rate is 80-100%; 3) pre-baking: pre-drying the obtained terylene sun-shading fabric in an oven at the pre-drying temperature of 110-; 4) baking: and (3) baking the obtained terylene sun-shading fabric at the temperature of 170-190 ℃ for 3-6 min by a setting machine under normal pressure. The invention is an improvement of the dyeing method of the terylene sun-shading fabric, has the characteristics of little water dyeing, no washing, good color fastness of products, water and energy conservation, sewage discharge reduction, cost reduction and important significance in the field of clean production.)

1. A little water washing dyeing method of a terylene sun-shading fabric is characterized by comprising the following steps:

preparing dye liquor, namely uniformly mixing 10g/L of dye, 20g/L-80g/L of adhesive, 5 g/L-20 g/L of anti-migration agent and 10g/L of wetting agent at normal temperature;

step (2) dyeing, namely soaking the terylene sun-shading fabric into a dye solution, and soaking and rolling the terylene sun-shading fabric once, wherein the rolling residual rate is 80-100%;

pre-drying, namely pre-drying the terylene sun-shading fabric obtained in the step (2) in an oven;

and (4) baking, namely baking the terylene sun-shading fabric obtained in the step (3) through a setting machine under normal pressure.

2. The little water washing dyeing method of the terylene sun-shading fabric according to claim 1, characterized in that in the step (1), the adhesive comprises 50 to 60 mass percent of epoxy resin, 6 to 10 mass percent of polyamide, 5 to 10 mass percent of reactive diluent, 6 mass percent of polyethylene micro powder wax, 5 mass percent of heat stabilizer, 4 mass percent of coupling agent and 5 mass percent of filler.

3. The little water washing dyeing method of the terylene sun-shading fabric according to claim 1, characterized in that the anti-migration agent in the step (1) comprises 50-70% by mass of acrylic polymer, 5-15% by mass of surfactant and 30-40% by mass of water.

4. The method for dyeing polyester sunshade fabric with less water washing as claimed in claim 1, wherein said wetting agent in step (1) comprises 5-10% by mass of polyoxyethylene sorbitan monooleate, 45-55% by mass of 1-decanol, and 35-50% by mass of water.

5. The little water washing dyeing method of the terylene sun-shading fabric according to claim 1, characterized in that the dye in the step (1) is a disperse dye.

6. The little water washing dyeing method of the terylene sun-shading fabric according to claim 1, which is characterized in that in the step (2), the speed of front and rear driving rollers of a padding finishing machine is 50-80m/min, and the pressure of the pressing roller is 2-4 kg.

7. The little water washing dyeing method of terylene sun-shading fabric as set forth in claim 1, characterized in that in step (3), the pre-drying temperature is 110-.

8. The little water washing dyeing method of the terylene sun-shading fabric according to claim 1, which is characterized in that in the step (4), the baking temperature is 170-190 ℃ and the baking time is 3-6 min.

Technical Field

The invention relates to the field of textile dyeing, in particular to a dyeing method of a terylene sun-shading fabric.

Background

The polyester sun-shading fabric comprises 100% of polyester fiber, and has the advantages of good setting performance, sun shading and ventilation, high strength, good wear resistance, good flame retardant effect and high light fastness. For dyeing of the terylene sun-shading fabric, a high-temperature high-pressure overflow dyeing method is generally adopted at present. The dyeing method has long process flow and large water consumption. Dyeing 1 ton of cloth with this dyeing method requires at least 10-15 tons of water, consumes a lot of energy and water, and poses serious environmental problems. In order to solve the problem of water consumption in polyester dyeing, researchers develop a supercritical carbon dioxide dyeing technology, which is an anhydrous dyeing technology, but the technology needs to depend on special equipment, so that the equipment investment is large, and the technology is difficult to popularize.

Based on the problems, the applicant develops a little water dyeing method for the terylene sun-shading fabric, and the method realizes the little water dyeing of the terylene sun-shading fabric through the processes of immersion pressing, pre-drying and baking. By the process for dyeing, the water consumption of 1 ton of fabric is about 0.5-1 ton, which is far lower than that of the traditional dyeing method. The used equipment is the existing equipment of a factory, and only needs to be slightly modified, so that the investment is low, and the popularization is easy.

Disclosure of Invention

The technical problem to be solved by the invention is to provide an improvement of a dyeing method of a terylene sun-shading fabric, the method can overcome the defects of the background technology, has the characteristics of no washing and good product color fastness, and can save water, save energy, reduce sewage discharge and reduce cost.

Therefore, the invention provides a method for washing terylene sun-shading fabric with less water, which comprises the following steps:

step (1) dye liquor preparation: uniformly mixing 10g/L of dye, 40g/L-80g/L of adhesive, 5 g/L-20 g/L of anti-migration agent and 10g/L of wetting agent at normal temperature;

step (2) dyeing: soaking the terylene sun-shading fabric into a dye solution, and soaking and rolling the terylene sun-shading fabric once, wherein the rolling residual rate is 80-100%;

pre-baking: pre-drying the dyed terylene sun-shading fabric in an oven at the pre-drying temperature of 110-;

baking in the step (4): and (3) baking the terylene sun-shading fabric at the normal pressure by a setting machine at the baking temperature of 170-190 ℃ for 3-6 min.

Preferably, in the step (1), the adhesive comprises 50-60% by mass of epoxy resin, 6-10% by mass of polyamide, 5-10% by mass of reactive diluent, 6% by mass of polyethylene micropowder wax, 5% by mass of heat stabilizer, 4% by mass of coupling agent and 5% by mass of filler.

Preferably, in the step (1), the migration inhibitor comprises 50-70% by mass of an acrylic polymer, 5-15% by mass of a surfactant, and 35-50% by mass of water.

Preferably, in the step (1), the wetting agent comprises 5-10% by mass of polyoxyethylene sorbitan monooleate, 45-55% by mass of 1-decanol and 35-50% by mass of water.

Preferably, in the step (1), the dye is a disperse dye.

Preferably, in the step (2), the speed of front and rear driving rollers of the padding finishing machine is 50-80m/min, and the pressure of a compression roller is 2-4 kg.

Preferably, in the step (3), the pre-drying temperature is 110-.

Preferably, in the step (4), the baking temperature is 170-190 ℃, and the baking time is 3-4 min.

Compared with the prior art, the invention has the advantages and positive effects that: 1) compared with the conventional polyester high-temperature high-pressure dyeing method, the dyeing method disclosed by the invention is simple in process flow, reduces the production cost, omits a water washing step through the process, can effectively reduce sewage discharge, and has a great application prospect in the field of clean production; 2) according to the invention, the reasonable dyeing formula is used for dyeing the terylene, the fixation of the dye and the fabric is increased by the adhesive and the anti-migration agent, and the obtained fabric has the advantages of uniform dyeing, good color fastness and high light fastness.

Drawings

The invention is described in further detail below with reference to the following figures and detailed description:

FIG. 1 is a dyeing process diagram of the terylene sun-shading fabric.

Detailed Description

The following detailed description of specific embodiments of the present invention is provided to illustrate and explain the present invention and to be understood not to limit the present invention.

The invention provides a little water dyeing method of a terylene sun-shading fabric, which comprises the following steps:

step (1) dye liquor preparation: uniformly mixing 10g/L of dye, 20g/L-80g/L of adhesive, 5 g/L-20 g/L of anti-migration agent and 10g/L of wetting agent at normal temperature;

step (2) dyeing: soaking the terylene sun-shading fabric into a dye solution, and soaking and rolling the terylene sun-shading fabric once, wherein the rolling residual rate is 80-100%; the sufficient liquid carrying rate of the terylene sun-shading fabric can be ensured, so that the terylene sun-shading fabric is fully padded, and the dyeing is uniform;

pre-baking: pre-drying the dyed terylene sun-shading fabric in an oven at the pre-drying temperature of 110-;

baking in the step (4): and (3) baking the terylene sun-shading fabric at the normal pressure by a setting machine at the baking temperature of 170-190 ℃ for 3-6 min.

In the step (1), the adhesive comprises 50-60% of epoxy resin by mass, 6-10% of polyamide by mass, 5-10% of reactive diluent by mass, 6% of polyethylene micro-powder wax by mass, 5% of heat stabilizer by mass, 4% of coupling agent by mass and 5% of filler by mass.

In the step (1), the anti-migration agent comprises 50-70% by mass of acrylic polymer, 5-15% by mass of surfactant and 30-40% by mass of water.

In the step (1), the wetting agent comprises 5-10% by mass of polyoxyethylene sorbitan monooleate, 45-55% by mass of 1-decanol and 35-50% by mass of water. The wetting agent is contacted with the surface of the terylene sun-shading fabric, the oleophylic chain segment is adsorbed on the surface of the terylene sun-shading fabric, and the hydrophilic group extends outwards into water. The contact between water and the base material is changed into the contact between water and hydrophilic groups of the wetting agent, so that a sandwich structure with the wetting agent as a middle layer is formed, the water phase is easier to spread, and the aim of wetting the terylene sun-shading fabric is fulfilled. The polyoxyethylene sorbitan monooleate is used as a solubilizer and can increase the solubility of the 1-decanol in water. The 1-decanol is a main action component of the wetting agent and can promote the wetting of other various auxiliary agents on the terylene sun-shading fabric.

In the step (2), the speed of front and rear driving rollers of the padding finishing machine is 50-80m/min, and the pressure of the pressing roller is 2-4 kg.

In the step (3), the pre-drying temperature is 110-. If the pre-drying temperature is too low, the terylene sun-shading fabric has more moisture, and the terylene sun-shading fabric can cause migration in the baking process to cause uneven dyeing; if the pre-drying temperature is too high, energy is easily wasted; the pre-drying temperature of the invention is 110-.

In the step (4), the baking temperature is 170-190 ℃, and the baking time is 3-4 min. If the baking temperature is too low, the dye can not color; if the baking temperature is too high, dye sublimation can be caused, and the fabric is easy to shrink due to heating; the baking temperature of the invention is 170-190 ℃, the color fastness of the terylene sun-shading fabric is good, and the light fastness is high.

1) Compared with the conventional polyester high-temperature high-pressure dyeing method, the dyeing method disclosed by the invention is simple in process flow, reduces the production cost and the sewage discharge, and has a great application prospect in the field of clean production. 2) According to the invention, the reasonable dyeing formula is used for dyeing the terylene, the fixation of the dye and the fabric is increased by the adhesive and the anti-migration agent, and the obtained fabric has the advantages of uniform dyeing, good color fastness and high light fastness.

The polyester sun-shading fabric obtained by the invention has dry and wet rubbing fastness and washing fastness reaching 4-5 grades, light fastness reaching more than 6 grades and apparent depth K/S value reaching 15.66.

By means of several examples within the scope of the process,