CN110820310A - Bleaching treatment process of full-wool fabric - Google Patents
Bleaching treatment process of full-wool fabric Download PDFInfo
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- CN110820310A CN110820310A CN201910975696.2A CN201910975696A CN110820310A CN 110820310 A CN110820310 A CN 110820310A CN 201910975696 A CN201910975696 A CN 201910975696A CN 110820310 A CN110820310 A CN 110820310A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
- D06L4/13—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen using inorganic agents
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
- D06L4/12—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen combined with specific additives
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/60—Optical bleaching or brightening
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/70—Multi-step processes
- D06L4/75—Multi-step processes combined with cleaning or washing
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/51—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof
- D06M11/54—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof with sulfur dioxide; with sulfurous acid or its salts
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
- D06M13/248—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing sulfur
- D06M13/256—Sulfonated compounds esters thereof, e.g. sultones
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
- D06M15/15—Proteins or derivatives thereof
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
- D06M16/003—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic with enzymes or microorganisms
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/10—Animal fibres
- D06M2101/12—Keratin fibres or silk
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Coloring (AREA)
Abstract
The invention discloses a bleaching treatment process of a full wool fabric, which comprises the working procedures of copper oxidase, papain mixed solution and bubble foaming pretreatment and bleaching solution treatment. The bleaching treatment process has the advantages of simple process, capability of effectively removing black wool miscellaneous spots on the whole wool fabric and maintaining good whiteness and strength of the fabric; papain is added into the mixed solution to carry out scale removal treatment on wool fabrics, ferrous ions are complexed with melanin in the wool, hydrogen peroxide and the ferrous ions can generate free radicals with strong oxidation capacity near wool pigments, copper oxidase oxidizes the pigments on the fabrics to form pigment dimers which are easy to oxidize, the fabrics can be bleached at low temperature, and the strength reduction or carbonization of the wool fibers caused by high-temperature bleaching is avoided; and inert gas is introduced to enable the mixed solution to generate bubbles, and the bubbles drive the mixed solution to rise and permeate into the fabric and rapidly break, so that the fabric can be quickly wetted and permeated.
Description
Technical Field
The invention relates to the technical field of bleaching, in particular to a bleaching treatment process of a full-wool fabric.
Background
The wool fiber has the effects of light weight, softness, heat preservation and the like, but the wool has natural yellow color and can be conveniently dyed into needed bright color or light color only by bleaching treatment. However, part of the slightly low-quality wool is not uniform in color and luster and can be mixed with black silk, the conventional bleaching method is adopted, the color of the bleached wool is not uniform, the black wool is not completely bleached, the pre-dyed color and the black wool which is not completely bleached are overlapped in subsequent dyeing, and the overall color and luster of the fabric are not uniform.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a bleaching treatment process of a full wool fabric, which has simple working procedures, can effectively remove black wool miscellaneous spots on the full wool fabric and can maintain good whiteness and strength of the fabric.
In order to achieve the purpose, the technical scheme of the invention is to design a bleaching treatment process of a full wool fabric, which comprises the following steps:
s1: pretreating the whole wool fabric, pretreating the whole wool fabric by using mixed liquor of ferrous sulfate heptahydrate, sodium bisulfite, copper oxidase and papain, and washing with water, wherein the ferrous sulfate heptahydrate is 9-10g/L, the sodium bisulfite is 1.5g/L, the concentration of the copper oxidase is 0.2-1g/L, the concentration of the papain is 4-5g/L, pH, the value is 5.0, and the bath ratio is 1: 20, the treatment temperature is 35-45 ℃, the treatment time is 40-50min, and meanwhile, inert gas is introduced into the mixed liquid in the treatment cylinder in the pretreatment process;
s2: bleaching, namely adding the pretreated full wool fabric and bleaching liquor into a dye vat for bleaching, wherein the bleaching temperature is 60-70 ℃, and the bath ratio is 1: 30, bleaching for 1-1.5 h; the bleaching solution comprises the following components in percentage by weight: 8g/L of 30% hydrogen peroxide, 2-6g/L of acetamide, 2.5-4g/L of citric acid, 4-5g/L of sodium pyrophosphate, 3g/L of sodium carbonate and 1g/L of penetrant, wherein the pH value of the bleaching solution is adjusted to 6-7 by utilizing a pH regulator;
s3: taking out the whole wool fabric, washing with hot water, washing with cold water, and drying.
The method comprises the following steps that the whole wool fabric is subjected to pretreatment of mixed liquor before a conventional bleaching treatment process, papain is added into the mixed liquor, and the wool fabric is subjected to scale stripping treatment, so that scales are raised, the edge passivation degree is good, and other pretreatment reagents can be conveniently in contact with wool well, so that reaction can be carried out; complexing ferrous ions of ferrous sulfate in the mixed solution with melanin in wool, then generating free radicals with strong oxidation capacity near wool pigments by the hydrogen peroxide and the ferrous ions during subsequent hydrogen peroxide bleaching, and when the melanin in the wool is decolored, carrying out pretreatment by using copper oxidase, wherein the copper oxidase oxidizes the pigments on the fabric to form pigment dimers, and the dimers are easier to oxidize than single molecules, so that the fabric can be bleached at a low temperature of 60-70 ℃ during the subsequent bleaching process, thereby avoiding the strength reduction or carbonization of wool fibers caused by high-temperature bleaching; and in the pretreatment process, inert gas is introduced into the treatment tank, so that the mixed solution generates bubbles, and the bubbles drive the mixed solution to rise and permeate into the fabric and rapidly break, so that the fabric can be rapidly wetted and permeated.
In order to further increase the whiteness of the wool fabric, the bleaching treatment process further comprises a whitening procedure, specifically, the bleached fabric is put into a fluorescent brightener solution containing 1-2g/L for treatment for 1-2h according to a bath ratio of 1:10-15, washed for 2-3 times, and put into a forced air drying oven for drying.
In order to improve the stability and foaming amount of the bubbles of the mixed solution, a further preferable technical scheme is that the mixed solution further comprises a foaming agent, and the foaming agent comprises at least one of sodium dodecyl sulfate, sodium dodecyl sulfate and sodium lauryl sulfate. The mixed solution contains a foaming agent, inert gas is filled into the mixed solution, the inert gas is wrapped by the liquid of the surrounding mixed solution, after bubbles are formed, molecules containing the foaming agent are gathered on the surfaces of the bubbles, hydrophobic groups point to the inert gas, and when the bubbles float upwards due to the density difference of gas-liquid phases, the surfactant of the second layer is surrounded with the surfactant of the first layer, so that a bubble film interlayer with a liquid layer in the middle is formed, the mixed solution exists in the bubble film interlayer in a liquid form, the bubbles break after contacting with the fabric, and the mixed solution carried by the bubbles is fully contacted with the inner layer of the fabric.
Further preferably, the inert gas includes nitrogen and/or argon.
Further preferably, the flow rate of the inert gas is 10-15L/min.
Further preferred technical scheme is that the pH regulator is selected from acetic acid or acetic acid-sodium acetate buffer solution or diluted ammonia water.
The invention has the advantages and beneficial effects that: the bleaching treatment process of the full-wool fabric has the advantages of simple process, capability of effectively removing black wool miscellaneous points on the full-wool fabric and capability of maintaining good whiteness and strength of the fabric; the method comprises the following steps that the whole wool fabric is subjected to pretreatment of mixed liquor before a conventional bleaching treatment process, papain is added into the mixed liquor, and the wool fabric is subjected to scale stripping treatment, so that scales are raised, the edge passivation degree is good, and other pretreatment reagents can be conveniently in contact with wool well, so that reaction can be carried out; complexing ferrous ions of ferrous sulfate in the mixed solution with melanin in wool, then generating free radicals with strong oxidation capacity near wool pigments by the hydrogen peroxide and the ferrous ions during subsequent hydrogen peroxide bleaching, and when the melanin in the wool is decolored, carrying out pretreatment by using copper oxidase, wherein the copper oxidase oxidizes the pigments on the fabric to form pigment dimers, and the dimers are easier to oxidize than single molecules, so that the fabric can be bleached at a low temperature of 60-70 ℃ in the later bleaching process, thereby avoiding the reduction of wool fiber strength or carbonization caused by high-temperature bleaching; and in the pretreatment process, inert gas is introduced into the treatment tank, so that the mixed solution generates bubbles, and the bubbles drive the mixed solution to rise and permeate into the fabric and rapidly break, so that the fabric can be rapidly wetted and permeated.
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.
Example 1
The invention relates to a bleaching treatment process of a full wool fabric, which comprises the following steps:
s1: pretreating the whole wool fabric, and washing the whole wool fabric with mixed liquor of ferrous sulfate heptahydrate, sodium bisulfite, sodium dodecyl sulfate, copper oxidase and papain, wherein the mixed liquor is 9.5g/L of ferrous sulfate heptahydrate, 1.5g/L of sodium bisulfite, 3-5g/L of sodium dodecyl sulfate, the concentration of copper oxidase is 0.6g/L, the concentration of papain is 4.5g/L, the pH value is 5.0, and the bath ratio is 1: 20, the treatment temperature is 40 ℃, the treatment time is 45min, and meanwhile, pure argon is introduced into the mixed liquid in the treatment cylinder in the pretreatment process;
s2: bleaching, namely adding the pretreated full-wool fabric and bleaching liquor into a dye vat for bleaching, wherein the bleaching temperature is 65 ℃, the bath ratio is 1: 30, bleaching for 1 h; the bleaching solution comprises the following components in percentage by weight: 8g/L of 30% hydrogen peroxide, 4g/L of acetamide, 3.2g/L of citric acid, 4.5g/L of sodium pyrophosphate, 3g/L of sodium carbonate and 1g/L of penetrant, wherein the pH value of the bleaching solution is adjusted to 6.5 by utilizing a pH regulator;
s3: cleaning, taking out the whole wool fabric, washing with hot water, washing with cold water, and drying;
s4: and (3) whitening, namely putting the bleached fabric into a fluorescent whitening agent solution containing 1.5g/L according to a bath ratio of 1:10 for treatment for 1.5h, washing for 3 times, and putting the fabric into a forced air drying oven for drying.
Example 2
A bleaching treatment process of a full wool fabric comprises the following steps:
s1: pretreating the whole wool fabric, and washing the whole wool fabric with mixed liquor of ferrous sulfate heptahydrate, sodium bisulfite, sodium dodecyl sulfate, copper oxidase and papain, wherein the mixed liquor is 9.5g/L of ferrous sulfate heptahydrate, 1.5g/L of sodium bisulfite, 4g/L of sodium dodecyl sulfate, 0.6g/L of copper oxidase, 4g/L of papain, 5.0 of pH value, and 1 of bath ratio: 20, the treatment temperature is 40 ℃, the treatment time is 45min, and meanwhile, pure argon is introduced into the mixed liquid in the treatment cylinder in the pretreatment process;
s2: bleaching, namely adding the pretreated full-wool fabric and bleaching liquor into a dye vat for bleaching, wherein the bleaching temperature is 65 ℃, the bath ratio is 1: 30, bleaching for 1 h; the bleaching solution comprises the following components in percentage by weight: 8g/L of 30% hydrogen peroxide, 4g/L of acetamide, 3.2g/L of citric acid, 4.5g/L of sodium pyrophosphate, 3g/L of sodium carbonate and 1g/L of penetrant, wherein the pH value of the bleaching solution is adjusted to 6.5 by utilizing a pH regulator;
s3: cleaning, taking out the whole wool fabric, washing with hot water, washing with cold water, and drying;
s4: and (3) whitening, namely putting the bleached fabric into a fluorescent whitening agent solution containing 1.5g/L according to a bath ratio of 1:10 for treatment for 1.5h, washing for 3 times, and putting the fabric into a forced air drying oven for drying.
Example 3
A bleaching treatment process of a full wool fabric comprises the following steps:
s1: pretreating the whole wool fabric, and washing the whole wool fabric with mixed liquor of ferrous sulfate heptahydrate, sodium bisulfite, sodium dodecyl sulfate, copper oxidase and papain, wherein the mixed liquor is 9.5g/L of ferrous sulfate heptahydrate, 1.5g/L of sodium bisulfite, 4g/L of sodium dodecyl sulfate, 0.6g/L of copper oxidase, 5g/L of papain, 5.0 of pH value and 1 of bath ratio: 20, the treatment temperature is 40 ℃, the treatment time is 45min, and meanwhile, pure argon is introduced into the mixed liquid in the treatment cylinder in the pretreatment process;
s2: bleaching, namely adding the pretreated full-wool fabric and bleaching liquor into a dye vat for bleaching, wherein the bleaching temperature is 65 ℃, the bath ratio is 1: 30, bleaching for 1 h; the bleaching solution comprises the following components in percentage by weight: 8g/L of 30% hydrogen peroxide, 4g/L of acetamide, 3.2g/L of citric acid, 4.5g/L of sodium pyrophosphate, 3g/L of sodium carbonate and 1g/L of penetrant, wherein the pH value of the bleaching solution is adjusted to 6.5 by utilizing a pH regulator;
s3: cleaning, taking out the whole wool fabric, washing with hot water, washing with cold water, and drying;
s4: and (3) whitening, namely putting the bleached fabric into a fluorescent whitening agent solution containing 1.5g/L according to a bath ratio of 1:10 for treatment for 1.5h, washing for 3 times, and putting the fabric into a forced air drying oven for drying.
Example 4
S1: pretreating the whole wool fabric, pretreating with mixed liquor of ferrous sulfate heptahydrate, sodium bisulfite, sodium dodecyl sulfate, copper oxidase and papain, and washing with water, wherein the ferrous sulfate heptahydrate is 9.5g/L, the sodium bisulfite is 1.5g/L, the sodium dodecyl sulfate is 4g/L, the concentration of the copper oxidase is 0.2g/L, the concentration of the papain is 4.5g/L, the pH value is 5.0, and the bath ratio is 1: 20, the treatment temperature is 40 ℃, the treatment time is 45min, and meanwhile, pure argon is introduced into the mixed liquid in the treatment cylinder in the pretreatment process;
s2: bleaching, namely adding the pretreated full-wool fabric and bleaching liquor into a dye vat for bleaching, wherein the bleaching temperature is 65 ℃, the bath ratio is 1: 30, bleaching for 1 h; the bleaching solution comprises the following components in percentage by weight: 8g/L of 30% hydrogen peroxide, 4g/L of acetamide, 3.2g/L of citric acid, 4.5g/L of sodium pyrophosphate, 3g/L of sodium carbonate and 1g/L of penetrant, wherein the pH value of the bleaching solution is adjusted to 6.5 by utilizing a pH regulator;
s3: cleaning, taking out the whole wool fabric, washing with hot water, washing with cold water, and drying;
s4: and (3) whitening, namely putting the bleached fabric into a fluorescent whitening agent solution containing 1.5g/L according to a bath ratio of 1:10 for treatment for 1.5h, washing for 3 times, and putting the fabric into a forced air drying oven for drying.
Example 5
S1: pretreating the whole wool fabric, and washing the whole wool fabric with mixed liquor of ferrous sulfate heptahydrate, sodium bisulfite, sodium dodecyl sulfate, copper oxidase and papain, wherein the ferrous sulfate heptahydrate is 9.5g/L, the sodium bisulfite is 1.5g/L, the sodium dodecyl sulfate is 4g/L, the concentration of the copper oxidase is 1g/L, the concentration of the papain is 4.5g/L, the pH value is 5.0, and the bath ratio is 1: 20, the treatment temperature is 40 ℃, the treatment time is 45min, and meanwhile, pure argon is introduced into the mixed liquid in the treatment cylinder in the pretreatment process;
s2: bleaching, namely adding the pretreated full-wool fabric and bleaching liquor into a dye vat for bleaching, wherein the bleaching temperature is 65 ℃, the bath ratio is 1: 30, bleaching for 1 h; the bleaching solution comprises the following components in percentage by weight: 8g/L of 30% hydrogen peroxide, 4g/L of acetamide, 3.2g/L of citric acid, 4.5g/L of sodium pyrophosphate, 3g/L of sodium carbonate and 1g/L of penetrant, wherein the pH value of the bleaching solution is adjusted to 6.5 by utilizing a pH regulator;
s3: cleaning, taking out the whole wool fabric, washing with hot water, washing with cold water, and drying;
s4: and (3) whitening, namely putting the bleached fabric into a fluorescent whitening agent solution containing 1.5g/L according to a bath ratio of 1:10 for treatment for 1.5h, washing for 3 times, and putting the fabric into a forced air drying oven for drying.
Example 6
Example 6 differs from example 1 in that the concentration of sodium dodecyl sulfate in the mixed solution was 3g/L, the bleaching temperature was 60 ℃, the bath ratio was 1: 30, bleaching for 1.5 h; the bleaching solution comprises the following components in percentage by weight: 8g/L of 30% hydrogen peroxide, 2g/L of acetamide, 2.5g/L of citric acid, 4g/L of sodium pyrophosphate, 3g/L of sodium carbonate and 1g/L of penetrant, wherein the pH value of the bleaching solution is adjusted to 6 by utilizing a pH regulator.
Example 7
Example 7 differs from example 1 in that the concentration of sodium dodecyl sulfate in the mixed solution was 5g/L, the bleaching temperature was 70 ℃, and the bath ratio was 1: 30, bleaching for 1 h; the bleaching solution comprises the following components in percentage by weight: 8g/L of 30% hydrogen peroxide, 6g/L of acetamide, 4g/L of citric acid, 5g/L of sodium pyrophosphate, 3g/L of sodium carbonate and 1g/L of penetrant, wherein the pH value of the bleaching solution is adjusted to 7 by utilizing a pH regulator.
The bleaching treatment process of the whole wool fabric in each embodiment can effectively bleach the black wool fibers mixed in the fabric, does not damage the strength of other light-color wool fibers, and enables the color and whiteness of the whole wool fabric to be consistent.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A bleaching treatment process of a full wool fabric is characterized by comprising the following steps:
s1: pretreating the whole wool fabric, pretreating the whole wool fabric by using mixed liquor of ferrous sulfate heptahydrate, sodium bisulfite, copper oxidase and papain, and washing with water, wherein the ferrous sulfate heptahydrate is 9-10g/L, the sodium bisulfite is 1.5g/L, the concentration of the copper oxidase is 0.2-1g/L, the concentration of the papain is 4-5g/L, pH, the value is 5.0, and the bath ratio is 1: 20, the treatment temperature is 35-45 ℃, the treatment time is 40-50min, and meanwhile, inert gas is introduced into the mixed liquid in the treatment cylinder in the pretreatment process;
s2: bleaching, namely adding the pretreated full wool fabric and bleaching liquor into a dye vat for bleaching, wherein the bleaching temperature is 60-70 ℃, and the bath ratio is 1: 30, bleaching for 1-1.5 h; the bleaching solution comprises the following components in percentage by weight: 8g/L of 30% hydrogen peroxide, 2-6g/L of acetamide, 2.5-4g/L of citric acid, 4-5g/L of sodium pyrophosphate, 3g/L of sodium carbonate and 1g/L of penetrant, wherein the pH value of the bleaching solution is adjusted to 6-7 by utilizing a pH regulator;
s3: cleaning, taking out the whole wool fabric, washing with hot water, washing with cold water, and drying.
2. The bleaching process of the whole wool fabric according to claim 1, further comprising a whitening step, wherein the bleaching process comprises the steps of putting the bleached fabric into a fluorescent brightener solution containing 1-2g/L for 1-2h according to a bath ratio of 1:10-15, washing for 2-3 times, and drying in a forced air drying oven.
3. The bleaching process for whole wool fabric according to claim 2, wherein the mixture further comprises a foaming agent, and the foaming agent comprises at least one of sodium dodecyl sulfate, and sodium lauryl sulfate.
4. The process for bleaching a whole wool fabric according to claim 3 wherein the inert gas comprises nitrogen and/or argon.
5. The bleaching process for whole wool fabric according to claim 4 wherein the inert gas is supplied at a flow rate of 10-15L/min.
6. The bleaching process for whole wool fabric according to claim 5 wherein the pH regulator is selected from acetic acid or acetic acid-sodium acetate buffer or dilute ammonia water.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112482014A (en) * | 2020-12-04 | 2021-03-12 | 东华大学 | Room-temperature bleaching method for cashmere loose fibers |
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