阅读说明：本技术 一种无色差混纺面料的染色方法 (Dyeing method of non-color-difference blended fabric ) 是由 潘伟 潘金根 于 2020-07-27 设计创作，主要内容包括：一种无色差混纺面料的染色方法,使用甘蔗渣作为主要原料对混纺面料进行染色,加入少量的醋酸、双氧水和OPE渗透剂,可以显著提升天然染料对涤纶纤维的染色效果,从而使染色后的混纺面料色牢度好,而且可以消除天然纤维与化学纤维之间的色差；同时可以对甘蔗渣进行废物利用,符合绿色环保的生产工艺要求。(A dyeing method of non-color difference blended fabric, which uses bagasse as a main raw material to dye the blended fabric, and adds a small amount of acetic acid, hydrogen peroxide and OPE penetrant, so that the dyeing effect of natural dye on polyester fiber can be obviously improved, the color fastness of the dyed blended fabric is good, and the color difference between the natural fiber and chemical fiber can be eliminated; meanwhile, bagasse can be utilized as waste, and the production process requirement of environmental protection is met.)

1. The dyeing method of the colordifference-free blended fabric is characterized by comprising the following steps of:

the method comprises the following steps: pretreatment of bagasse: washing bagasse raw materials with clear water, drying the bagasse in an oven at 30-50 ℃, repeatedly and mechanically crushing dried solid substances for 5-7 times, sieving with a 25-mesh sieve, and taking undersize;

step two: further ultrasonic crushing the mechanically crushed bagasse: further carrying out ultrasonic crushing for 30-40min under the conditions that pure water is used as a solvent, the ultrasonic power is 1200-1500W and the material-liquid ratio is 1: 5-8, and filtering to obtain a filtrate containing bagasse; the filtered filter residue can be continuously crushed by ultrasonic;

step three: then processing the mixture by ultrahigh pressure nanocrystallization equipment 250 and 280MPa until the particle size is 30-100nm, and concentrating and spray drying the mixture to obtain bagasse nano powder;

step four: putting bagasse nano powder into a natural dye concentrated solution, and adding acetic acid, hydrogen peroxide and an OPE penetrating agent to obtain a bagasse suspension, wherein the solid content of the natural dye concentrated solution is 5-12%;

step five: adding carrageenan and gelatin into the bagasse suspension, and uniformly stirring to prepare a jelly with the viscosity of 10000-15000 cps;

step six: coating the jelly on the blended fabric, wherein the coating process parameters are as follows: the length of the oven is 35-50m, 6 sections of ovens are arranged, and the temperature of the oven is set as follows: at 50 deg.C, 65 deg.C, 80 deg.C, 95 deg.C, 90 deg.C, 80 deg.C, machine speed of 35-50m/min, coating thickness of 15-25 μm, and coating release paper on the coated surface during curling;

step seven: coating the non-glued surface of the blended fabric according to the parameters in the sixth step;

step eight: stripping release paper of the double-sided glued blended fabric, introducing into boiling water at 100 ℃, washing for 3-5min, and then treating for 15-25s in steam at 120-.

2. The dyeing method of colorlessness blended yarn fabric according to claim 1 wherein in said first step, the solid content of the dried solid matter is 50-70%.

3. The dyeing method of blended fabric without color difference as claimed in claim 1, characterized in that in the fourth step, the concentration of acetic acid is 36-38%; the concentration of the hydrogen peroxide is 25-30%.

4. The method for dyeing colorlessness blended yarn weaved fabric according to claim 1, wherein in the fourth step, the bagasse suspension is composed of the following components by weight percent: 10-15% of bagasse nano powder, 1-3% of acetic acid, 2-8% of hydrogen peroxide, 6-10% of OPE penetrant and natural dye concentrated solution.

5. The dyeing method of blended fabric without color difference according to claim 1, wherein in the fifth step, the carrageenan is pure natural colloid extracted from plants; gelatin is a pure natural colloid extracted from animal skin and bone.

6. The dyeing method of the colorlessness blended fabric according to claim 5, wherein in the fifth step, the mass ratio of the carrageenan to the gelatin is (5-8): 1.

7. the dyeing method of the colorlessness blended fabric according to claim 1, characterized in that the blended fabric is blended by silk fiber and polyester fiber.

8. The dyeing method of the colorlessness blended fabric according to claim 7, characterized in that the blended fabric contains 30% -80% of real silk fiber and 20% -70% of polyester fiber by weight.

Technical Field

The invention relates to the technical field of textile dyes, in particular to a dyeing method of a non-chromatic-aberration blended fabric.

Background

In human history, natural dyes have made unvanishable contributions to the beautification of human life. Since the end of the 19 th century, natural dyes have essentially exited the field of fabric dyeing due to the rapid development of synthetic dyes. With the increasing awareness of environmental protection and the growing concern about self health, the harm of part of synthetic dyes to human health and ecological environment is attracting more and more attention. With the improvement of modern technology level, especially modern manufacturing level, the requirements of people on safety, health care and the like of the clothing industry are higher and higher, and the natural dye is paid attention to by people. The animal and plant dyes in the natural dyes are extracted from organisms, have good compatibility with the environment and can be biodegraded. Most of natural dyes are traditional Chinese medicines, and in the dyeing process, the medicines, the fragrance components and the pigments are absorbed by the fabric together, and besides the dyeing function, the natural dyes also have various functions of medicines, spices and the like, so that the dyed fabric has a special medicine health-care function for a human body.

At present, in the process of dyeing fibers by using natural dyes, in order to achieve better color fastness of fabrics, some chemical auxiliaries are added.

Sugarcane is one of the main raw materials for sugar production. About 50% of the fiber of the bagasse, which remains after sugar pressing, can be used for paper making. However, some of the pith (marrow cells) have no interweaving force and should be removed before pulping. The bagasse fibers are about 0.65-2.17 mm in length and 21-28 μm in width. Although the fiber form is inferior to wood and bamboo, the fiber form is better than rice and wheat straw fiber. The pulp can be mixed with part of wood pulp to make offset printing paper, cement bag paper, etc.

Chinese invention patents CN105926315A, CN105862457A and CN105839427A respectively disclose methods for dyeing cotton fibers, silk fibers and ramie fibers by using bagasse as a raw material, and the method for dyeing fibers by using bagasse as a main raw material has good color fastness, can utilize waste of the bagasse and meets the requirements of green and environment-friendly production processes, but the problem that color difference is difficult to solve in the process of dyeing blended fabrics, particularly natural/chemical fiber blended fabrics by using the bagasse is provided by the invention.

Disclosure of Invention

In order to achieve a pure natural dyeing effect, the invention provides a dyeing method of a non-color-difference blended fabric.

A dyeing method of a colordifference-free blended fabric comprises the following steps:

the method comprises the following steps: pretreatment of bagasse: washing bagasse raw materials with clear water, drying the bagasse in an oven at 30-50 ℃, repeatedly and mechanically crushing dried solid substances for 5-7 times, sieving with a 25-mesh sieve, and taking undersize;

step two: further ultrasonic crushing the mechanically crushed bagasse: further carrying out ultrasonic crushing for 30-40min under the conditions that pure water is used as a solvent, the ultrasonic power is 1200-1500W and the material-liquid ratio is 1: 5-8, and filtering to obtain a filtrate containing bagasse; the filtered filter residue can be continuously crushed by ultrasonic;

step three: then processing the mixture by ultrahigh pressure nanocrystallization equipment 250 and 280MPa until the particle size is 30-100nm, and concentrating and spray drying the mixture to obtain bagasse nano powder;

step four: putting bagasse nano powder into a natural dye concentrated solution, and adding acetic acid, hydrogen peroxide and an OPE penetrating agent to obtain a bagasse suspension, wherein the solid content of the natural dye concentrated solution is 5-12%;

step five: adding carrageenan and gelatin into the bagasse suspension, and uniformly stirring to prepare a jelly with the viscosity of 10000-15000 cps;

step six: coating the jelly on the blended fabric, wherein the coating process parameters are as follows: the length of the oven is 35-50m, 6 sections of ovens are arranged, and the temperature of the oven is set as follows: at 50 deg.C, 65 deg.C, 80 deg.C, 95 deg.C, 90 deg.C, 80 deg.C, machine speed of 35-50m/min, coating thickness of 15-25 μm, and coating release paper on the coated surface during curling;

step seven: coating the non-glued surface of the blended fabric according to the parameters in the sixth step;

step eight: stripping release paper of the double-sided glued blended fabric, introducing into boiling water at 100 ℃, washing for 3-5min, and then treating for 15-25s in steam at 120-.

Preferably, in the first step, the solid content of the dried solid matter is 50-70%.

Preferably, in the fourth step, the concentration of the acetic acid is 36-38%; the concentration of the hydrogen peroxide is 25-30%.

Preferably, in the fourth step, the bagasse suspension consists of the following components in percentage by weight: 10-15% of bagasse nano powder, 1-3% of acetic acid, 2-8% of hydrogen peroxide, 6-10% of OPE penetrant and natural dye concentrated solution.

Preferably, in the fifth step, the carrageenan is a pure natural colloid extracted from plants; gelatin is a pure natural colloid extracted from animal skin and bone.

Preferably, in the fifth step, the mass ratio of the carrageenan to the gelatin is (5-8): 1.

preferably, the blended fabric is formed by blending real silk fibers and polyester fibers.

Preferably, in the blended fabric, the weight percentages of the real silk fibers and the polyester fibers are respectively 30-80% and 20-70%.

According to the dyeing method of the colorfast-free blended fabric, the bagasse is used as a main raw material to dye the blended fabric, and a small amount of acetic acid, hydrogen peroxide and an OPE penetrant are added, so that the dyeing effect of natural dye on polyester fiber can be remarkably improved, the dyed blended fabric has good color fastness, and the colorfast between natural fiber and chemical fiber can be eliminated; meanwhile, bagasse can be utilized as waste, and the production process requirement of environmental protection is met.

Detailed Description