CN113279247A - Double-alkali boiling-off process for primary-color linen yarns - Google Patents
Double-alkali boiling-off process for primary-color linen yarns Download PDFInfo
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- CN113279247A CN113279247A CN202110747276.6A CN202110747276A CN113279247A CN 113279247 A CN113279247 A CN 113279247A CN 202110747276 A CN202110747276 A CN 202110747276A CN 113279247 A CN113279247 A CN 113279247A
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- 239000003513 alkali Substances 0.000 title claims abstract description 91
- 238000000034 method Methods 0.000 title claims abstract description 51
- 238000009835 boiling Methods 0.000 claims abstract description 45
- 241000208202 Linaceae Species 0.000 claims abstract description 31
- 235000004431 Linum usitatissimum Nutrition 0.000 claims abstract description 31
- 238000009991 scouring Methods 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 44
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 42
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 42
- 239000003795 chemical substances by application Substances 0.000 claims description 32
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 28
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 28
- 238000005406 washing Methods 0.000 claims description 28
- 238000007670 refining Methods 0.000 claims description 25
- 239000012752 auxiliary agent Substances 0.000 claims description 23
- 239000008367 deionised water Substances 0.000 claims description 21
- 229910021641 deionized water Inorganic materials 0.000 claims description 21
- 238000010411 cooking Methods 0.000 claims description 14
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 14
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 13
- 238000007599 discharging Methods 0.000 claims description 8
- PQUCIEFHOVEZAU-UHFFFAOYSA-N Diammonium sulfite Chemical compound [NH4+].[NH4+].[O-]S([O-])=O PQUCIEFHOVEZAU-UHFFFAOYSA-N 0.000 claims description 7
- 239000004115 Sodium Silicate Substances 0.000 claims description 7
- 239000004902 Softening Agent Substances 0.000 claims description 7
- 238000007730 finishing process Methods 0.000 claims description 7
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 7
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 5
- 239000000835 fiber Substances 0.000 abstract description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 238000004321 preservation Methods 0.000 abstract description 2
- 238000009987 spinning Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 8
- 239000004744 fabric Substances 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229920005610 lignin Polymers 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920001277 pectin Polymers 0.000 description 2
- 235000010987 pectin Nutrition 0.000 description 2
- 239000001814 pectin Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
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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
- D06M11/32—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 oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—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 oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table
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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
- D06M11/55—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 trioxide; with sulfuric acid or thiosulfuric acid or their salts
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- 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
- D06M11/58—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 nitrogen or compounds thereof, e.g. with nitrides
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- D—TEXTILES; PAPER
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- 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
- D06M11/68—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 phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof
- D06M11/72—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 phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof with metaphosphoric acids or their salts; with polyphosphoric acids or their salts; with perphosphoric acids or their salts
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- 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
- D06M11/73—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 carbon or compounds thereof
- D06M11/76—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 carbon or compounds thereof with carbon oxides or carbonates
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- 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
- D06M11/77—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 silicon or compounds thereof
- D06M11/79—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 silicon or compounds thereof with silicon dioxide, silicic acids or their salts
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- 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
- D06M13/10—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 oxygen
- D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
- D06M13/188—Monocarboxylic acids; Anhydrides, halides or salts thereof
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- 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
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The invention discloses a double-alkali boiling-off process for primary-color linen yarns, which comprises the following steps: pretreatment, primary alkali boiling, secondary alkali boiling, after finishing and taking out of a pot. Compared with the traditional flax scouring process, the double-alkali scouring process is adopted, the usage amount of chemical materials is reduced, and the heat preservation time is shortened, so that the effective spinning length and the splitting degree of the fibers are ensured; not only keeps higher splitting degree and spinnability level of flax fiber in the prior art, but also avoids the damage to the fiber caused by excessive single alkali. The double-alkali scouring process improves the spinnability and quality of the product, obviously improves the yarn evenness and strength of the finished product compared with conventional scouring, reduces the roving loss rate by 1-3%, and saves the production cost of enterprises.
Description
Technical Field
The invention relates to the technical field of flax treatment, in particular to a double-alkali boiling-off process for primary-color flax yarns.
Background
Flax is an important raw material in the bast fiber textile industry, and the flax fiber is tough, flexible and fine and has better color. The flax fiber has the advantages of strong strength, corrosion resistance in water, waterproof function, friction resistance, high temperature resistance, quick heat dissipation, low dust absorption rate, tearing resistance, burning resistance, no static electricity, high acid and alkali resistance and the like. Flax is a skin fiber of plant, and has the functions of being similar to human skin, protecting human body, regulating temperature and other natural properties. Linen clothes can reduce human body sweat compared with other clothes, absorb water several times faster than silk fabric, rayon fabric and even cotton cloth, and form capillary phenomenon when contacting with skin, which is the extension of skin. The natural air permeability, hygroscopicity, freshness and moisture-discharging property of the flax make the flax become a textile capable of freely breathing, the indoor temperature sensitivity of a human body can be reduced by 4-8 ℃ at normal temperature, and the flax is called as a natural air conditioner.
The scouring process technology of the raw yarn is the key for influencing the quality of the yarn, the alkali scouring is the key link of the scouring process, and the alkali scouring is the largest and most key factor for products in the alkali scouring process. The strong alkali boiling is favorable for smoothly removing impurities such as lignin, pectin and wax in the flax fiber, and is favorable for improving the splitting degree and the spinnability of the sub-fiber, but the damage to the flax fiber is large, the loss rate of the roving is high, and the evenness and the strength of the yarn are reduced. Therefore, it is necessary to research a double-alkali boiling-off process of the primary-color linen yarns.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a double-alkali boiling-off process for primary-color linen yarns. The process has two functions, one is that impurities such as lignin, pectin, lipid, hemicellulose and the like in the flax fibers can be well removed, the splitting degree and the spinnability of the flax fibers are ensured, and the damage to the flax fibers is small, and the loss rate to the rough yarns is low.
The technical scheme of the invention is as follows:
a double-alkali boiling-off process for primary-color linen yarns comprises the following steps:
a, pretreatment: adding strong acid and a refining agent into water to treat the linen yarn blank for 15-25 min at 30-35 ℃; then washing with water at normal temperature for 10-20 min, and overflowing;
b, primary alkali cooking: performing alkali boiling treatment on the pretreated linen yarn at 90 +/-1.5 ℃, wherein the treatment time is 90-120 min; then discharging liquid without washing;
c, secondary alkali boiling: carrying out secondary alkali boiling treatment at 90 +/-1.5 ℃ on the linen yarn subjected to primary alkali boiling for 20-35 min; then taking out the linen yarn and washing the linen yarn with water;
d, after finishing: carrying out after-finishing on the linen yarn subjected to the two alkali boiling processes at 28-32 ℃, wherein the processing time is 20-40 min;
e, taking out of the pot.
Preferably, in the step a, the strong acid is sulfuric acid, and the refining agent is a refining agent TP.
More preferably, the content of the sulfuric acid is 1.6-2.5 g/L, and the content of the refining agent TP is 0.1-1 g/L;
preferably, in the step B, the following decoction is adopted in the primary alkaline cooking process: refining agent MY 4: 0.5-0.7 g/L, sodium hydroxide: 2.5-4.0 g/L, sodium bicarbonate: 0.7-1.0 g/L, sodium silicate: 2.0-3.5 g/L, auxiliary agent ammonium sulfite: 1.0-1.5 g/L, auxiliary agent sodium tripolyphosphate: 1.0-1.5 g/L, and the balance of deionized water.
Preferably, in the step C, the following decoction is adopted in the secondary alkaline cooking process: refining agent MY 4: 0.3-0.4 g/L, sodium hydroxide: 1.5-2.0 g/L, sodium bicarbonate: 1.0-1.5 g/L, washing assistant 102: 0.4-0.6 g/L, auxiliary agent acetic acid: 0.3-0.5 g/L, and the balance of deionized water.
Preferably, in the step D, the following after-finishing liquid is adopted in the after-finishing process: the softening agent special for flax: 1-2 g/L, acetic acid: 0.5-1.0 g and the balance of deionized water.
Preferably, in the steps B and C, the amount, temperature and treatment time of the auxiliary agent can be properly adjusted according to the difference of the actual raw hemp and the difference of the product requirements.
The invention has the advantages that: the invention discloses a double-alkali boiling-off process for linen yarns with primary colors, which comprises the following steps: pretreatment, primary alkali boiling, secondary alkali boiling, after finishing and taking out of a pot. Compared with the traditional flax scouring process, the double-alkali scouring process is adopted, the usage amount of chemical materials is reduced, and the heat preservation time is shortened, so that the effective spinning length and the splitting degree of the fibers are ensured; not only keeps higher splitting degree and spinnability level of flax fiber in the prior art, but also avoids the damage to the fiber caused by excessive single alkali. The double-alkali scouring process improves the spinnability and quality of the product, obviously improves the yarn evenness and strength of the finished product compared with conventional scouring, reduces the roving loss rate by 1-3%, and saves the production cost of enterprises.
Detailed Description
Example 1
A double-alkali boiling-off process for primary-color linen yarns comprises the following steps:
a, pretreatment: adding sulfuric acid and a scouring agent TP into water to treat the linen yarn blank for 20min at 32 ℃; then washing with water at normal temperature for 15min, and overflowing; the sulfuric acid content is 1.9g/L, and the refining agent TP content is 0.6 g/L;
b, primary alkali cooking: performing alkali boiling treatment on the pretreated linen yarn at 90 +/-1.5 ℃ for 95 min; then discharging liquid without washing; the following decoction is adopted in the primary alkali cooking process: refining agent MY 4: 0.6g/L, sodium hydroxide: 2.8g/L, sodium bicarbonate: 0.8g/L, sodium silicate: 2.5g/L, auxiliary agent ammonium sulfite: 1.2g/L, auxiliary agent sodium tripolyphosphate: 1.3g/L, and the balance of deionized water;
c, secondary alkali boiling: carrying out secondary alkali boiling treatment at 90 +/-1.5 ℃ on the linen yarn subjected to primary alkali boiling for 25 min; then taking out the linen yarn and washing the linen yarn with water; the following decoction is adopted in the secondary alkali boiling process: refining agent MY 4: 0.35g/L, sodium hydroxide: 1.7g/L, sodium bicarbonate: 1.2g/L, washing assistant 102: 0.5g/L, auxiliary agent acetic acid: 0.42g/L, and the balance of deionized water;
d, after finishing: carrying out after-finishing on the linen yarn subjected to the two-time alkali boiling at 30 ℃ for 35 min; the after-finishing process adopts the following after-finishing liquid: the softening agent special for flax: 1.4g/L, acetic acid: 0.8g and the balance of deionized water;
e, taking out of the pot.
Example 2
A double-alkali boiling-off process for primary-color linen yarns comprises the following steps:
a, pretreatment: adding sulfuric acid and a scouring agent TP into water to treat the linen yarn blank for 15min at 35 ℃; then washing with water at normal temperature for 20min, and overflowing; the sulfuric acid content is 1.6g/L, and the refining agent TP content is 1 g/L;
b, primary alkali cooking: performing alkali boiling treatment on the pretreated linen yarn at 90 +/-1.5 ℃ for 90 min; then discharging liquid without washing; the following decoction is adopted in the primary alkali cooking process: refining agent MY 4: 0.7g/L, sodium hydroxide: 2.5g/L, sodium bicarbonate: 1.0g/L, sodium silicate: 2.0g/L, auxiliary agent ammonium sulfite: 1.5g/L, auxiliary agent sodium tripolyphosphate: 1.0g/L and the balance of deionized water;
c, secondary alkali boiling: carrying out secondary alkali boiling treatment at 90 +/-1.5 ℃ on the linen yarn subjected to primary alkali boiling for 35 min; then taking out the linen yarn and washing the linen yarn with water; the following decoction is adopted in the secondary alkali boiling process: refining agent MY 4: 0.3g/L, sodium hydroxide: 2.0g/L, sodium bicarbonate: 1.0g/L, washing assistant 102: 0.6g/L, auxiliary agent acetic acid: 0.3g/L and the balance of deionized water;
d, after finishing: carrying out after-finishing on the linen yarn subjected to the twice alkali boiling at 32 ℃ for 20 min; the after-finishing process adopts the following after-finishing liquid: the softening agent special for flax: 2g/L, acetic acid: 0.5g and the balance of deionized water;
e, taking out of the pot.
Example 3
A double-alkali boiling-off process for primary-color linen yarns comprises the following steps:
a, pretreatment: adding sulfuric acid and a scouring agent TP into water to treat the linen yarn blank for 25min at 30 ℃; then washing with water at normal temperature for 10min, and overflowing; the sulfuric acid content is 2.5g/L, and the refining agent TP content is 0.1 g/L;
b, primary alkali cooking: performing alkali boiling treatment on the pretreated linen yarn at 90 +/-1.5 ℃ for 120 min; then discharging liquid without washing; the following decoction is adopted in the primary alkali cooking process: refining agent MY 4: 0.5g/L, sodium hydroxide: 4.0g/L, sodium bicarbonate: 0.7g/L, sodium silicate: 3.5g/L, auxiliary agent ammonium sulfite: 1.0g/L, auxiliary agent sodium tripolyphosphate: 1.5g/L, and the balance of deionized water;
c, secondary alkali boiling: carrying out secondary alkali boiling treatment at 90 +/-1.5 ℃ on the linen yarn subjected to primary alkali boiling for 20 min; then taking out the linen yarn and washing the linen yarn with water; the following decoction is adopted in the secondary alkali boiling process: refining agent MY 4: 00.4g/L, sodium hydroxide: 1.5g/L, sodium bicarbonate: 1.5g/L, washing assistant 102: 0.4g/L, auxiliary agent acetic acid: 0.5g/L and the balance of deionized water;
d, after finishing: carrying out after-finishing on the linen yarn subjected to the two alkali boiling processes at 28 ℃ for 40 min; the after-finishing process adopts the following after-finishing liquid: the softening agent special for flax: 1g/L, acetic acid: 1.0g, and the balance of deionized water;
e, taking out of the pot.
Example 4
A double-alkali boiling-off process for primary-color linen yarns comprises the following steps:
a, pretreatment: adding sulfuric acid and a scouring agent TP into water to treat the linen yarn blank for 15min at 30 ℃; then washing with water at normal temperature for 20min, and overflowing; the sulfuric acid content is 1.9g/L, and the refining agent TP content is 0.6 g/L;
b, primary alkali cooking: performing alkali boiling treatment on the pretreated linen yarn at 90 +/-1.5 ℃ for 120 min; then discharging liquid without washing; the following decoction is adopted in the primary alkali cooking process: refining agent MY 4: 0.6g/L, sodium hydroxide: 2.8g/L, sodium bicarbonate: 0.8g/L, sodium silicate: 2.5g/L, auxiliary agent ammonium sulfite: 1.2g/L, auxiliary agent sodium tripolyphosphate: 1.3g/L, and the balance of deionized water;
c, secondary alkali boiling: carrying out secondary alkali boiling treatment at 90 +/-1.5 ℃ on the linen yarn subjected to primary alkali boiling for 20 min; then taking out the linen yarn and washing the linen yarn with water; the following decoction is adopted in the secondary alkali boiling process: refining agent MY 4: 0.35g/L, sodium hydroxide: 1.7g/L, sodium bicarbonate: 1.2g/L, washing assistant 102: 0.5g/L, auxiliary agent acetic acid: 0.42g/L, and the balance of deionized water;
d, after finishing: carrying out after-finishing on the linen yarn subjected to the twice alkali boiling at 32 ℃ for 40 min; the after-finishing process adopts the following after-finishing liquid: the softening agent special for flax: 1.4g/L, acetic acid: 0.8g and the balance of deionized water;
e, taking out of the pot.
Example 5
A double-alkali boiling-off process for primary-color linen yarns comprises the following steps:
a, pretreatment: adding sulfuric acid and a scouring agent TP into water to treat the linen yarn blank for 20min at 32 ℃; then washing with water at normal temperature for 18min, and overflowing; the sulfuric acid content is 1.6g/L, and the refining agent TP content is 1 g/L;
b, primary alkali cooking: performing alkali boiling treatment on the pretreated linen yarn at 90 +/-1.5 ℃ for 108 min; then discharging liquid without washing; the following decoction is adopted in the primary alkali cooking process: refining agent MY 4: 0.55g/L, sodium hydroxide: 2.5g/L, sodium bicarbonate: 1.0g/L, sodium silicate: 2.8g/L, auxiliary agent ammonium sulfite: 1.5g/L, auxiliary agent sodium tripolyphosphate: 1.5g/L, and the balance of deionized water;
c, secondary alkali boiling: carrying out secondary alkali boiling treatment at 90 +/-1.5 ℃ on the linen yarn subjected to primary alkali boiling for 25 min; then taking out the linen yarn and washing the linen yarn with water; the following decoction is adopted in the secondary alkali boiling process: refining agent MY 4: 0.4g/L, sodium hydroxide: 1.5g/L, sodium bicarbonate: 1.1g/L, washing assistant 102: 0.6g/L, auxiliary agent acetic acid: 0.4g/L, and the balance of deionized water;
d, after finishing: carrying out after-finishing on the linen yarn subjected to the two-time alkali boiling at 30 ℃, wherein the processing time is 29 min; the after-finishing process adopts the following after-finishing liquid: the softening agent special for flax: 1.8g/L, acetic acid: 0.65g and the balance of deionized water;
e, taking out of the pot.
Comparative example 1
Step B in example 1 was removed, and the remaining formulation and preparation method were unchanged.
Comparative example 1
Step C in example 1 was removed, and the remaining formulation and preparation method were unchanged.
Comparative example
The flax natural color light primary color yarn is processed by adopting the method disclosed in the embodiment of the process of the invention patent CN201810654143.2 in China.
The wet-spun primary-color 24 count pure long flax yarns treated by the examples 1-3 and the comparative examples 1-2 and the comparative example were tested as follows to obtain the following test results:
| example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | Comparative example | |
| The variation coefficient of evenness of yarn is% | 29.4 | 29.1 | 29.2 | 27.1 | 27.6 | 30.5 |
| Single yarn breaking strength (cN/tex) | 33.5 | 33.1 | 32.9 | 34.7 | 34.4 | 26.1 |
| Coefficient of variation of single yarn breaking tenacity% | 11.4 | 12.5 | 11.8 | 9.9 | 10.2 | 20.5 |
| The coefficient of variation of hundred meters by weight% | 2.9 | 3.1 | 3.2 | 2.7 | 2.7 | 4.3 |
| Weight deviation of hundred meters% | ±1.5 | ±1.7 | ±1.7 | ±1.5 | ±1.5 | ±1.9 |
| Details (-50%) (one/Km) | 1260 | 1270 | 1285 | 2920 | 2885 | 1970 |
| Cotton joint (+ 200%) (single/Km) | 540 | 570 | 565 | 895 | 930 | 715 |
| Loss of roving% | 13.2 | 13.7 | 13.9 | 18.4 | 18.7 | 15.9 |
The test data show that the linen yarn (24 count) adopts the double-alkali boiling-off process, compared with the traditional one-time alkali boiling-off process, the linen yarn strength is obviously improved, and the defects of linen particles and slubs of the linen yarn can be obviously reduced; meanwhile, the roving loss rate can be obviously reduced; not only the cost is reduced, but also the performance and the quality of the product are improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The double-alkali boiling-off process for the primary-color linen yarns is characterized by comprising the following steps of:
a, pretreatment: adding strong acid and a refining agent into water to treat the linen yarn blank for 15-25 min at 30-35 ℃; then washing with water at normal temperature for 10-20 min, and overflowing;
b, primary alkali cooking: performing alkali boiling treatment on the pretreated linen yarn at 90 +/-1.5 ℃, wherein the treatment time is 90-120 min; then discharging liquid without washing;
c, secondary alkali boiling: carrying out secondary alkali boiling treatment at 90 +/-1.5 ℃ on the linen yarn subjected to primary alkali boiling for 20-35 min; then taking out the linen yarn and washing the linen yarn with water;
d, after finishing: carrying out after-finishing on the linen yarn subjected to the two alkali boiling processes at 28-32 ℃, wherein the processing time is 20-40 min;
e, taking out of the pot.
2. The process of double alkali scouring flax yarns in primary color according to claim 1, wherein in step a, the strong acid is sulfuric acid and the scouring agent is scouring agent TP.
3. The double-alkali boiling-off process of the primary-color linen yarn as claimed in claim 2, wherein the sulfuric acid content is 1.6-2.5 g/L, and the refining agent TP content is 0.1-1 g/L.
4. The process for double alkali scouring flax yarns in primary color according to claim 1, wherein in the step B, the following decoction is adopted in the primary alkali scouring process: refining agent MY 4: 0.5-0.7 g/L, sodium hydroxide: 2.5-4.0 g/L, sodium bicarbonate: 0.7-1.0 g/L, sodium silicate: 2.0-3.5 g/L, auxiliary agent ammonium sulfite: 1.0-1.5 g/L, auxiliary agent sodium tripolyphosphate: 1.0-1.5 g/L, and the balance of deionized water.
5. The double alkali scouring process for primary-color linen yarns as claimed in claim 1, wherein in the step C, the following decoction is adopted in the secondary alkali scouring process: refining agent MY 4: 0.3-0.4 g/L, sodium hydroxide: 1.5-2.0 g/L, sodium bicarbonate: 1.0-1.5 g/L, washing assistant 102: 0.4-0.6 g/L, auxiliary agent acetic acid: 0.3-0.5 g/L, and the balance of deionized water.
6. The process for double alkali scouring of primary-colored linen yarns as claimed in claim 1, wherein in said step D, the following after-finishing liquors are used in the after-finishing process: the softening agent special for flax: 1-2 g/L, acetic acid: 0.5-1.0 g and the balance of deionized water.
7. The process for double alkali boiling-off of flax yarn with primary color according to claim 1, wherein in the steps B and C, the dosage, temperature and treatment time of the auxiliary agent can be adjusted properly according to the difference of the actual raw flax and the difference of the product requirement.
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