阅读说明：本技术 毛麻混纺纱线的染色方法 (Dyeing method of wool-hemp blended yarn ) 是由 徐国庭 于 2021-01-11 设计创作，主要内容包括：本发明公开了毛麻混纺纱线的染色方法,包括以下步骤：步骤1：准备原纤维,步骤2：原纤维前处理,步骤3：混纺成纱,步骤4：准备染液,步骤5：羊毛纱酸染,步骤6：亚麻纱碱染,步骤7：固色皂洗,步骤8：水洗烘干。本发明通过将纺好的毛麻混纺纱线首先在酸性染液中酸染,对混纺纱线中的羊毛纱进行上色,然后将经过羊毛纱酸染后的混纺纱线在碱性染液中碱染,对混纺纱线中的亚麻纱进行上色,得到颜色度相同的毛麻混纺纱线,使得混纺纱线的颜色均匀,不会出现色差。(The invention discloses a dyeing method of a wool and hemp blended yarn, which comprises the following steps: step 1: preparation of fibrils, step 2: fibril pretreatment, step 3: blending to obtain yarn, and step 4: preparing a dye solution, and step 5: acid dyeing of wool yarn, step 6: alkali dyeing of linen yarn, step 7: fixation and soaping, step 8: and (5) washing and drying. According to the invention, the spun wool-linen blended yarn is firstly acid-dyed in an acid dye solution to color wool yarns in the blended yarn, then the blended yarn acid-dyed wool yarns is alkali-dyed in an alkali dye solution to color linen yarns in the blended yarn, so that the wool-linen blended yarn with the same color degree is obtained, and the blended yarn has uniform color and is free from color difference.)

1. The dyeing method of the wool-hemp blended yarn is characterized by comprising the following steps:

step 1: preparing fibril, and preparing undyed white wool fiber and flax fiber;

step 2: pre-treating original fiber, namely putting the wool fiber into an industrial washing machine for spray cleaning, wherein the water temperature is 50-60 ℃, the spray cleaning time is 20-30 minutes, and drying; bleaching flax fibers for 2-3 times by using hydrogen peroxide bleaching liquid, wherein the pH value of the hydrogen peroxide bleaching liquid is 9-11, and drying;

and step 3: blending into yarn, blending the pretreated original fiber into wool and hemp blended yarn;

and 4, step 4: preparing a dyeing solution, preparing two dyeing cylinders, respectively adding water and dye with the same mass, uniformly stirring to obtain two parts of a dyeing solution a and a dyeing solution b, adding a pH regulator into the dyeing solution a to adjust the pH to 4-7, and adding a pH regulator into the dyeing solution b to adjust the pH to 7-9;

and 5: acid dyeing wool yarns, namely placing the wool-hemp blended yarns into dyeing liquid a, controlling the heating rate to be 1 ℃/min, heating to 60-80 ℃, preserving heat and dyeing for 1-2 hours, and coloring the wool yarns in the blended yarns;

step 6: alkali dyeing of linen yarn: placing the wool and linen blended yarn subjected to the step 5 into a dyeing solution b, controlling the heating rate to be 2 ℃/min, heating to 80-90 ℃, preserving heat and dyeing for 3-4 hours, and coloring linen yarns in the blended yarn;

and 7: fixing color and soaping, adding soda into the blended yarn soaked in the step 6 for fixing color for 30 minutes, discharging waste liquid after fixing color, washing the fixed blended yarn with water, adding acetic acid, uniformly stirring, performing acid-base neutralization reaction for 5 minutes, discharging the waste liquid after acid-base neutralization treatment, adding clear water, heating to 70 ℃ at a heating rate of 1 ℃/min, putting a soaping agent into hot water, stirring, mixing and soaping for 30 minutes, and discharging waste water after soaping;

and 8: and (3) washing and drying, taking out the blended yarn subjected to color fixation and soaping, washing for 2-3 times, and then placing at 40-60 ℃ for vacuum drying to obtain the wool and linen blended yarn with the same color degree.

2. The method of dyeing a wool/linen blended yarn according to claim 1, wherein a leveling agent and a precipitation inhibitor are added to both the dyeing liquid a and the dyeing liquid b.

3. The method for dyeing a wool and hemp blend yarn according to claim 2, wherein said leveling agent is a leveling agent O or a leveling agent Albegal B-LV in an amount of 2% to 5% by weight of the yarn, and said deposition preventing agent is a dispersant wa in an amount of 0.5 g/L.

4. The method of dyeing a wool and hemp blend yarn according to claim 1, wherein the PH adjuster is an acetic acid solution.

5. The method for dyeing the wool and linen blended yarn according to claim 1, wherein in the step 2, the temperature for bleaching the linen yarn in the hydrogen peroxide bleaching solution is 80-95 ℃.

Technical Field

The invention relates to the technical field of dyeing of wool and hemp blended yarns, in particular to a dyeing method of the wool and hemp blended yarns.

Background

Because the wool/flax blended yarn has unique appearance, hand feeling and comfortableness, the wool/flax blended yarn can be used as air-conditioning clothes in spring and summer, and breaks through the limitation that wool products are only used in autumn and winter. The research solves the homochromatic dyeing technology of wool and cotton blended products, and can provide a great development prospect for the products. The wool and flax blended yarn is dyed, wherein the surface scale layer of wool is locally damaged, so that the dyeing speed of the dye is high, the exhaustion rate is high, and the wool and flax blended yarn is easy to dye. Fibrilia has high crystallinity, good orientation degree, large polymerization degree, slow dye coloring, lower exhaustion rate than wool, and the conventional dyeing of the blended yarn of the blended wool and the flax easily causes uneven dyeing and larger color difference of the yarn.

Conventional dyeing has disadvantages:

acid or neutral/direct dye one or two bath processes: medium and dark color washing resistance and poor color fastness of sweat stain.

Acid or neutral dye/reactive dye two-bath method: medium and dark color washing resistance and poor color fastness of sweat stain. The dyeing time is too long, and the strength of the wool fiber is reduced under the high-temperature alkaline condition.

Due to the fact that the coloring rates of wool and flax are different, the problems that the wool and flax blended yarns are uneven in color and large in color difference occur in dyeing. The invention discloses a dyeing method of wool and linen blended yarns, aiming at solving the dyeing problem of wool and linen blended yarns.

Disclosure of Invention

The invention aims to provide a dyeing method of wool and linen blended yarns, and solve the problems of uneven dyeing and large chromatic aberration of the wool and linen blended yarns.

The dyeing method of the wool-hemp blended yarn is characterized by comprising the following steps:

step 1: preparing fibril, and preparing undyed white wool fiber and flax fiber;

step 2: pre-treating original fiber, namely putting the wool fiber into an industrial washing machine for spray cleaning, wherein the water temperature is 50-60 ℃, the spray cleaning time is 20-30 minutes, and drying; bleaching flax fibers for 2-3 times by using hydrogen peroxide bleaching liquid, wherein the pH value of the hydrogen peroxide bleaching liquid is 9-11, and drying;

and step 3: blending into yarn, blending the pretreated original fiber into wool and hemp blended yarn;

and 4, step 4: preparing a dyeing solution, preparing two dyeing cylinders, respectively adding water and dye with the same mass, uniformly stirring to obtain two parts of a dyeing solution a and a dyeing solution b, adding a pH regulator into the dyeing solution a to adjust the pH to 4-7, and adding a pH regulator into the dyeing solution b to adjust the pH to 7-9;

and 5: acid dyeing wool yarns, namely placing the wool-hemp blended yarns into dyeing liquid a, controlling the heating rate to be 1 ℃/min, heating to 60-80 ℃, preserving heat and dyeing for 1-2 hours, and coloring the wool yarns in the blended yarns;

step 6: alkali dyeing of linen yarn: placing the wool and linen blended yarn subjected to the step 5 into a dyeing solution b, controlling the heating rate to be 2 ℃/min, heating to 80-90 ℃, preserving heat and dyeing for 3-4 hours, and coloring linen yarns in the blended yarn;

and 7: fixing color and soaping, adding soda into the blended yarn soaked in the step 6 for fixing color for 30 minutes, discharging waste liquid after fixing color, washing the fixed blended yarn with water, adding acetic acid, uniformly stirring, performing acid-base neutralization reaction for 5 minutes, discharging the waste liquid after acid-base neutralization treatment, adding clear water, heating to 70 ℃ at a heating rate of 1 ℃/min, putting a soaping agent into hot water, stirring, mixing and soaping for 30 minutes, and discharging waste water after soaping;

and 8: and (3) washing and drying, taking out the blended yarn subjected to color fixation and soaping, washing for 2-3 times, and then placing at 40-60 ℃ for vacuum drying to obtain the wool and linen blended yarn with the same color degree.

Preferably, in the technical solution disclosed in the present invention, a leveling agent and a precipitation preventing agent are added to both the staining solution a and the staining solution b.

Preferably, in the technical scheme disclosed by the invention, the leveling agent is leveling agent O or is Albegal B-LV, the dosage of the leveling agent is 2% -5% of the weight of the yarn, and the precipitation preventing agent is dispersant wa, and the dosage of the precipitation preventing agent is 0.5 g/L.

Preferably, in the technical scheme disclosed by the invention, the pH regulator is an acetic acid solution.

Preferably, in the technical scheme disclosed by the invention, in the step 2, the bleaching temperature of the linen yarn in the hydrogen peroxide bleaching solution is 80-95 ℃.

The invention has the beneficial effects that: according to the invention, the spun wool-linen blended yarn is firstly acid-dyed in an acid dye solution to color wool yarns in the blended yarn, then the blended yarn acid-dyed wool yarns is alkali-dyed in an alkali dye solution to color linen yarns in the blended yarn, so that the wool-linen blended yarn with the same color degree is obtained, and the blended yarn has uniform color and is free from color difference.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood 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.

The dyeing method of the wool-hemp blended yarn is characterized by comprising the following steps:

step 1: preparing fibril, and preparing undyed white wool fiber and flax fiber;

step 2: pre-treating original fiber, namely putting the wool fiber into an industrial washing machine for spray cleaning, wherein the water temperature is 50-60 ℃, the spray cleaning time is 20-30 minutes, and drying; bleaching flax fibers for 2-3 times by using hydrogen peroxide bleaching liquid, wherein the pH value of the hydrogen peroxide bleaching liquid is 9-11, and drying;

and step 3: blending into yarn, blending the pretreated original fiber into wool and hemp blended yarn;

and 4, step 4: preparing a dyeing solution, preparing two dyeing cylinders, respectively adding water and dye with the same mass, uniformly stirring to obtain two parts of a dyeing solution a and a dyeing solution b, adding a pH regulator into the dyeing solution a to adjust the pH to 4-7, and adding a pH regulator into the dyeing solution b to adjust the pH to 7-9;

and 5: acid dyeing wool yarns, namely placing the wool-hemp blended yarns into dyeing liquid a, controlling the heating rate to be 1 ℃/min, heating to 60-80 ℃, preserving heat and dyeing for 1-2 hours, and coloring the wool yarns in the blended yarns;

step 6: alkali dyeing of linen yarn: placing the wool and linen blended yarn subjected to the step 5 into a dyeing solution b, controlling the heating rate to be 2 ℃/min, heating to 80-90 ℃, preserving heat and dyeing for 3-4 hours, and coloring linen yarns in the blended yarn;

and 7: fixing color and soaping, adding soda into the blended yarn soaked in the step 6 for fixing color for 30 minutes, discharging waste liquid after fixing color, washing the fixed blended yarn with water, adding acetic acid, uniformly stirring, performing acid-base neutralization reaction for 5 minutes, discharging the waste liquid after acid-base neutralization treatment, adding clear water, heating to 70 ℃ at a heating rate of 1 ℃/min, putting a soaping agent into hot water, stirring, mixing and soaping for 30 minutes, and discharging waste water after soaping;

and 8: and (3) washing and drying, taking out the blended yarn subjected to color fixation and soaping, washing for 2-3 times, and then placing at 40-60 ℃ for vacuum drying to obtain the wool and linen blended yarn with the same color degree.

Preferably, in the technical solution disclosed in the present invention, a leveling agent and a precipitation preventing agent are added to both the staining solution a and the staining solution b.

Preferably, in the technical scheme disclosed by the invention, the leveling agent is leveling agent O or is Albegal B-LV, the dosage of the leveling agent is 2% -5% of the weight of the yarn, and the precipitation preventing agent is dispersant wa, and the dosage of the precipitation preventing agent is 0.5 g/L.

Preferably, in the technical scheme disclosed by the invention, the pH regulator is an acetic acid solution.

Preferably, in the technical scheme disclosed by the invention, in the step 2, the bleaching temperature of the linen yarn in the hydrogen peroxide bleaching solution is 80-95 ℃.

In the embodiment, in the step of blending into yarns, the blending process of the wool fibers and the linen fibers is the conventional blending process.

In the embodiment, undyed white wool fibers and undyed flax fibers are prepared, and before dyeing, the wool fibers are put into an industrial washing machine for spray cleaning, the water temperature is 50-60 ℃, and the spray cleaning time is 20-30 minutes; bleaching flax fibers by using hydrogen peroxide bleaching liquid, wherein the pH value of the hydrogen peroxide bleaching liquid is between 9 and 11, and the temperature is between 80 and 95 ℃; blending the pretreated wool fibers and the flax fibers into wool-flax blended yarns; preparing two parts of the same dyeing solution a and the same dyeing solution b to enable the color degrees of the dyeing solutions to be the same, then respectively adding a pH regulator into the dyeing solution a and the dyeing solution b to enable the pH value of the dyeing solution a to be 4-7 acidic and the pH value of the dyeing solution b to be 7-9 basic, adding a leveling agent and a precipitation preventing agent, stirring uniformly, putting the wool and hemp blended yarn into the dyeing solution a for acid dyeing, controlling the temperature rise rate to be 1 ℃/min, heating to 60-80 ℃, performing heat preservation dyeing for 1-2 hours, and coloring the wool yarn in the blended yarn; then putting the blended yarn subjected to acid dyeing of the wool yarn into dyeing liquid b for alkali dyeing, controlling the heating rate to be 2 ℃/min, heating to 80-90 ℃, and carrying out heat preservation dyeing for 3-4 hours to color the linen yarn in the blended yarn; and after dyeing is finished, fixing color and soaping to obtain the wool and hemp blended yarns with the same color degree, and washing and drying to ensure that the obtained wool and hemp blended yarns have uniform color and do not have color difference.

While embodiments of the invention have been disclosed above, it is not intended to be limited to the uses set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. It is therefore intended that the invention not be limited to the exact details and descriptions herein shown and described, but that it be understood that various modifications may be made without departing from the general concept as defined by the appended claims and their equivalents.