CN115074889A - Pure linen grey cloth interwoven with dry-spun and wet-spun linen yarns and preparation method thereof - Google Patents

Pure linen grey cloth interwoven with dry-spun and wet-spun linen yarns and preparation method thereof Download PDF

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CN115074889A
CN115074889A CN202210859729.9A CN202210859729A CN115074889A CN 115074889 A CN115074889 A CN 115074889A CN 202210859729 A CN202210859729 A CN 202210859729A CN 115074889 A CN115074889 A CN 115074889A
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spun
linen
yarns
flax
wet
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李佳蔚
杨树
曹巧丽
郁崇文
张斌
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Donghua University
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Donghua University
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/208—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads cellulose-based
    • D03D15/217—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads cellulose-based natural from plants, e.g. cotton
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
    • D03D15/41—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads with specific twist
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
    • D03D15/43—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads with differing diameters
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
    • D03D15/58—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads characterised by the coefficients of friction
    • 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
    • D06M13/02—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with hydrocarbons
    • 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
    • D06M13/10—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
    • D06M13/144—Alcohols; Metal alcoholates
    • D06M13/148—Polyalcohols, e.g. glycerol or glucose
    • 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
    • D06M15/03—Polysaccharides or derivatives thereof
    • D06M15/11—Starch or derivatives thereof
    • 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
    • D06M2101/04—Vegetal fibres
    • D06M2101/06—Vegetal fibres cellulosic
    • 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
    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/40—Reduced friction resistance, lubricant properties; Sizing compositions
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
    • D10B2201/01—Natural vegetable fibres
    • D10B2201/04—Linen
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/06—Load-responsive characteristics
    • D10B2401/063—Load-responsive characteristics high strength
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2501/00—Wearing apparel
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2503/00—Domestic or personal
    • D10B2503/06—Bed linen
    • D10B2503/062—Fitted bedsheets

Abstract

The invention relates to pure flax grey cloth interwoven with dry-spun and wet-spun flax yarns and a preparation method thereof. The preparation method comprises the following steps: the dry-spun linen yarns are used as warp yarns, the wet-spun linen yarns are used as weft yarns, and the pure linen grey cloth is woven after warping and slashing processes, wherein the temperature of the slashing process is below 65 ℃. The method combines the advantages of wet spinning and dry spinning, effectively shortens the process flow of (warp) spinning on the basis of keeping the unique style and natural primitive texture of the flax, and the characteristics of air permeability, moisture permeability, good hand feeling, good comfort, mildew resistance and bacteria resistance, reduces the production cost and energy consumption, gives consideration to the appearance, performance and cost of the fabric, fully utilizes the flax and noil, meets the requirements of the market on pure flax fabrics of various specifications, and is favorable for low-carbon and sustainable development of flax textiles.

Description

Pure linen grey cloth interwoven with dry-spun and wet-spun linen yarns and preparation method thereof
Technical Field
The invention belongs to the technical field of spinning, and particularly relates to pure linen grey cloth interwoven with dry-spun and wet-spun linen yarns and a preparation method thereof.
Background
Flax is one of the earliest natural fibers used by human beings, the length of a single fiber of the flax is about 20mm, the fineness of 3000-.
The traditional flax spinning technology is generally wet spinning, which is called wet spinning for short, the main process flow comprises the steps of softening flax, carding, drawing, roving, boiling and bleaching, wet spinning of spun yarn, drying and the like, and the impurities such as colloid and the like in the fiber are gradually removed. The linen yarn spun by the wet spinning technology has smooth surface, less hairiness and soft luster, but the prepared linen yarn is thicker, the yarn evenness is poorer, the strength is higher, and the woven fabric is stiff and has unique rough and uneven texture. On the other hand, the wet spinning process has the disadvantages of longer flow, low efficiency, poor labor environment of a wet spinning workshop and more water and energy consumption.
Compared with flax spinning, the equipment and the technology of the cotton spinning ring spinning system are more advanced and mature, the production speed is far higher than that of flax wet spinning, and the uniformity of finished yarn is also obviously better than that of wet spinning. Therefore, the dry spinning of the linen yarn by the cotton spinning system not only can simplify the spinning flow and improve the yield and the efficiency, but also can improve the yarn performance. Meanwhile, the system can also effectively utilize the noil in wet spinning for spinning, can greatly reduce the cost and energy consumption, and also can effectively utilize the noil in wet spinning for spinningFully utilizes the flax raw material. However, compared with wet spun flax yarns, the dry spun flax yarns have shorter fiber length, loose structure, poor cohesive force between fibers, more hairiness on the surface and poorer luster, and after being woven into fabrics, the flax yarns have no cloth cover style of wet spun flax yarns, thereby weakening the unique style of flax fabrics which are generally accepted and loved by the public to a certain extent. Master academic paper 'study on flax wet-spinning and cross-twisting composite yarn and fabric performance' spinning method for cross-twisting flax yarn and wool or chinlon to optimize yarn performance and further reduce fabric scratchiness, but air permeability (23.48 mL/cm) of cross-twisting composite yarn fabric 2 S) is much lower than pure linen (30.55 mL/cm) 2 S). The invention patent with the application number of CN200910072124.X, a high-count high-density pure linen gray fabric warp sizing method, uses starch slurry to size pure linen gray fabric warp, and solves the problems of low efficiency, excessive three-jump defects and the like caused by the adoption of strip weaving. But the size mixing temperature is 95-100 ℃, the energy consumption is large, and the temperature of a size box is 70-80 ℃ during sizing, so that the linen yarn is easy to be degummed, and the tension is loose.
Disclosure of Invention
The invention aims to provide pure linen grey cloth interwoven with dry-spun and wet-spun linen yarns and a preparation method thereof and solve the problem of tension relaxation caused by high sizing temperature of the pure linen grey cloth.
The invention provides a preparation method of pure flax grey cloth interwoven by dry spinning and wet spinning flax yarns, which comprises the following steps:
the dry-spun linen yarns are used as warp yarns, the wet-spun linen yarns are used as weft yarns, and the pure linen grey cloth is woven after warping and slashing processes, wherein the temperature of the slashing process is below 65 ℃.
Preferably, the wet-spun linen yarn for the weft has the yarn count of 24-48 cm, the twist coefficient of 240-320 and is 10-20% lower than that of the conventional wet-spun linen yarn, so that the cloth surface is softer, and the luster is beautiful and soft.
Preferably, the dry-spun linen yarn for the warp has the yarn count of 24-40 cm and the twist coefficient of 500-600, which is 10-20% higher than that of the conventional dry-spun linen yarn, so that the strength and the rigidity of the yarn are improved, hairiness is reduced, and the performance of the dry-spun linen yarn is closer to that of the wet-spun linen yarn.
Preferably, the sizing process is warp sizing, and the formula of the sizing agent is as follows: 60-110g/L of oxidized phosphate potato starch, 1.5-2.5g/L of glycerol, 1.5-2g/L of emulsifying wax, 0.5-2g/L of quick penetrating agent T and 1-2.5g/L of antistatic agent.
Preferably, the preparation method of the potato starch containing the phosphate oxide comprises the following steps: reacting potato starch milk, hydrogen peroxide and sodium tripolyphosphate at 40-50 deg.C for 45-60min, and controlling pH to 4-6, wherein the concentration of potato starch milk is 40-50%, the amount of hydrogen peroxide is 0.8-2% of dry weight of potato starch, and the amount of sodium tripolyphosphate is 10-30% of dry weight of potato starch.
Preferably, the degree of substitution of the oxidized phosphate ester potato starch is 0.2-0.25, and the gelatinization temperature is 50-60 ℃; when the solid content of the oxidized phosphate ester potato starch is 6%, the viscosity of the starch slurry is 15-20 mPa.s.
Preferably, in the sizing process, the temperature of the size is controlled to be 50-60 ℃ (in order to prevent temperature dissipation in sizing, the temperature of a size box is determined to be 55-65 ℃ so that the temperature of the size is 50-60 ℃), and the sizing speed is 25-40m/min so that the sizing percentage of the sizing is 5-8%.
Preferably, in the sizing process, after sizing is stranded, the speed is adjusted to be 20-40m/min, the drying cylinder temperature is 110-130 ℃, the moisture regain of the sized yarn after drying is controlled to be 12-16 percent and is slightly greater than the moisture regain of the flax base yarn so as to enhance the fatigue resistance and the wear resistance of the warp yarn, and the warp yarn is used for subsequent weaving on a loom.
Preferably, the pure linen gray weave structure comprises a plain weave or a twill weave.
The invention also provides the pure flax grey cloth prepared by the preparation method.
The invention also provides application of the pure flax grey cloth prepared by the preparation method in clothing or home textile products.
The principle of the invention is as follows:
the wet-spun linen yarn has smooth surface, less hairiness, high strength, high rigidity and soft luster, the woven fabric is stiff and has unique rough and uneven textures, and in the fabric, warp yarns are usually used as the framework of the fabric to endow the fabric with the performances of strength, rigidity and the like; the weft yarn is usually on the surface of the fabric, and the hand feeling and the luster of the fabric are influenced. Therefore, the interwoven fabric which adopts the dry-spun linen yarns as the warp yarns and the wet-spun linen yarns as the weft yarns can show the same style as the pure linen wet-spun fabrics in appearance. The invention adopts the dry spun flax yarn produced on cotton spinning equipment as warp yarn, and utilizes the noil (short fiber) produced in the wet spinning of long flax for spinning, thereby fully utilizing the flax raw material, utilizing an advanced cotton spinning equipment platform, realizing the high-efficiency short-process spinning of the flax yarn and producing the dry spun flax short fiber yarn with more uniform yarn levelness. Meanwhile, when spinning, the twist is improved by 10-20% compared with the conventional flax short-spun dry-spun yarn; the weft adopts wet-spun linen yarns, and the twist coefficient of the weft is 10-20% lower than that of the conventional wet-spun linen yarns. The large twist of the flax short fiber dry-spun yarn is used for further improving the strength and rigidity of the yarn and reducing hairiness, so that the style and performance of the yarn are closer to those of flax wet-spun yarn, and the yarn is suitable for the requirements of high strength, less hairiness and wear resistance of warp yarn; the low twist of the wet spun yarn is due to the fact that the low twist makes the yarn softer, better in gloss and higher in yield during spinning. The wet spinning is used as the weft exposed on the surface of the fabric, and the strength requirement is not high, so the yarn twist can be completely reduced.
The flax fiber is only half degummed in spinning, the yarn still contains more colloid, and the colloid is easily dissolved in high-temperature slurry, so that the fiber is loose, the tension of sizing is reduced, the yarn is sagged, the yarn is easy to wind and break when passing through each guide roller part, the sizing effect is deteriorated, the smooth proceeding of sizing is influenced (the broken rate of sizing is improved, the good axial rate is reduced), and low-temperature sizing (below 65 ℃) is needed for preventing the fiber from being loose. When the fiber and the sizing agent have polar groups with the same structure, the affinity between the fiber and the sizing agent is very high, the adhesion of the sizing agent to the fiber is good, and the sizing agent is adsorbed on the surface of the yarn and dried to form a layer of smooth and tough film, so that the hairiness on the surface is attached to the surface, the friction coefficient is reduced, and the wear resistance is improved. Starch is a natural high polymer with glucose as a structural unit, flax belongs to cellulose fiber, and both contain a large number of hydroxyl groups, so potato starch is selected as a main adhesive of the pulp. Under the action of oxidant, the hydroxymethyl part on glucose unit is oxidized into carboxyl, and phosphate esterification makes partial hydroxyl of starch combine with acyl of phosphoric acid. The oxidation and the phosphorylation reduce the number of hydroxymethyl in starch molecules, so that molecular association is hindered, namely the binding capacity of hydrogen bonds among molecules is weakened; the part of the glucoside bond between the starch molecule base rings is broken, the polymerization degree is reduced, thereby the gelatinization temperature of the starch is reduced, and the starch can be subjected to low-temperature sizing. Meanwhile, the starch can be partially hydrolyzed under acidic conditions, the hardness, brittleness and roughness of the size film are greatly reduced, the size film is soft and elastic, the fluidity of the size is improved, and the linen yarn has good permeability and is attached to hairiness.
Advantageous effects
The invention uses dry-spun linen yarns as warp yarns and wet-spun linen yarns as weft yarns. The twist coefficient of the dry-spun linen yarn is 10-20% higher than that of the conventional dry-spun linen yarn, so that the dry-spun linen yarn has the characteristics of high strength and high rigidity similar to those of wet-spun linen yarn, and hairiness of the yarn can be reduced; the twist coefficient of the wet-spun linen yarn is 10-20% lower than that of the conventional wet-spun linen yarn, so that the cloth cover is endowed with good softness and luster, and the spinning yield can be improved. The invention combines the advantages of wet spinning and dry spinning, effectively shortens the process flow of (warp) spinning, reduces the production cost and energy consumption, gives consideration to the appearance, the performance and the cost of the fabric, fully utilizes the flax and the noil to meet the market demand for pure flax fabrics with various specifications on the basis of keeping the unique style and natural primitive and simple texture of the flax, and the characteristics of air permeability, moisture permeability, good hand feeling, good comfort, mildew resistance and bacteria resistance, and is beneficial to the low-carbon and sustainable development of flax textiles.
In the sizing process, the oxidized phosphate ester potato starch is used as the main adhesive for warp sizing, the sizing temperature is low, and the problems of increased broken end rate and reduced good axial rate of sizing caused by tension relaxation caused by degumming of linen yarns due to high-temperature sizing are avoided. The modified potato starch slurry with the oxidized phosphate ester has good fluidity and good wettability to dry-spun linen yarns with high twist.
The surface density of the fabric is 150- 2 The warp breaking strength is 398-.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Breaking Strength test method the tensile Properties of textile fabrics were measured according to GB/T3923.1-1997 part 1: the test was carried out by the bar method for determination of breaking strength and elongation at break.
Abrasion number test method determination of abrasion resistance of fabrics according to the martindale method of GB/T21196.2-2007 textile part 2: and (4) measuring the breakage of the sample and testing.
Permeability value test method the test was carried out according to the determination of the Permeability of textile fabrics GB/T5453-1997.
Crease recovery rating test method the crease recovery rating test was performed according to the appearance evaluation method for the crease recovery of GB/T29257-2012 textile fabrics.
The slashing good-axis rate is the ratio of the number of slashes without slashing defects to the total number of the slashes investigated: the slashed axial ratio is the total number of slashed axes x 100%/the number of axes examined.
The slashing end breakage rate is the number of broken ends of yarns of a unit slashing device in unit time.
Example 1
A method for preparing pure linen grey cloth interwoven with wet linen yarns by dry spinning is used for weaving plain linen grey cloth for preparing clothes, and the specific process flow is as follows:
wet-spun linen yarn with 24 cm count and 240 twist factor is adopted as weft yarn, the yarn count is 20 cm count, and the twist factor is500 dry-spun linen yarns are warp yarns, are warped, are slashed by using a low-temperature slashing technology, and have a size formula as follows: in 1000 liters of slurry, 60kg of phosphate ester-oxidized potato starch, 1.5kg of glycerol, 2kg of emulsifying wax, a rapid penetrating agent T1kg and 1.5kg of an antistatic agent. The preparation process of the oxidized phosphate potato starch comprises the following steps: the concentration of the potato starch milk is 40 percent, the dosage of hydrogen peroxide is 0.8 percent of the dry weight of the starch, the dosage of sodium tripolyphosphate is 10 percent of the dry weight of the starch, the reaction is carried out for 60min at 50 ℃, and the pH value is controlled to be 6. The substitution degree of the prepared potato starch with the oxidized phosphate ester is 0.2, the gelatinization temperature is 60 ℃, and when the solid content is 6%, the viscosity of the starch slurry is 20 mPa.S. In order to prevent temperature dissipation during slashing, the temperature of a slashing tank is determined to be 65 ℃, the temperature of the slashing is 60 ℃, the slashing speed is 25m/min, and the slashing sizing rate is controlled to be 8%. After slashing is stranded, the speed of the slashing is adjusted to be 20m/min, the temperature of a drying cylinder is 110 ℃, the moisture regain of the slashing after being dried is controlled to be 12 percent and is slightly larger than the moisture regain of the linen base yarn so as to enhance the fatigue resistance and the wear resistance of the warp, and the slashing is used for subsequent weaving on a loom. The weave structure is plain weave, and the obtained pure flax woven grey cloth has the surface density of 200g/m 2 The warp breaking strength is 433N, the weft breaking strength is 419N, the wear-resisting times are 12000 times, the air permeability value is 845mm/s, and the wrinkle recovery grade is 3 grade.
Example 2
A method for preparing pure flax grey cloth interwoven by dry spinning and wet spinning flax yarns is used for preparing clothes by weaving twill plain grey cloth, and the specific process flow is as follows:
wet-spun linen yarns with the yarn count of 36 cm and the twist coefficient of 280 are used as weft yarns, the yarn count of 30 cm and dry-spun linen yarns with the twist coefficient range of 550 are used as warp yarns, the warp yarns are warped, the slashing is carried out by using a low-temperature slashing technology, and the formula of the sizing agent is as follows: in 1000 liters of slurry, 60kg of phosphate ester-oxidized potato starch, 1.5kg of glycerol, 2kg of emulsifying wax, a rapid penetrating agent T1kg and 1.5kg of an antistatic agent. The preparation process of the phosphate ester oxidized potato starch comprises the following steps: the concentration of the potato starch milk is 45 percent, the dosage of hydrogen peroxide is 1.5 percent of the dry weight of the starch, the dosage of sodium tripolyphosphate is 20 percent of the dry weight of the starch, the reaction is carried out for 55min at 45 ℃, and the pH value is controlled to be 5. The obtained potato starch has substitution degree of 0.23 and gelatinization temperature of 5The viscosity of the starch slurry was 17mPa.S at 5 ℃ with a solids content of 6%. In order to prevent temperature dissipation during slashing, the temperature of a slashing tank is determined to be 60 ℃, the temperature of the slashing is enabled to be 55 ℃, the slashing speed is 32m/min, and the slashing sizing percentage is controlled to be 6%. After slashing is stranded, the speed of the slashing is adjusted to be 30m/min, the temperature of a drying cylinder is 120 ℃, the moisture regain of the slashing after being dried is controlled to be 14 percent and is slightly larger than the moisture regain of the linen base yarn so as to enhance the fatigue resistance and the wear resistance of the warp, and the slashing is used for subsequent weaving on a loom. The weave structure is twill weave, and the obtained pure linen woven grey cloth has the surface density of 170g/m 2 The warp breaking strength is 410N, the weft breaking strength is 390N, the wear resistance times are 11000 times/mg, the air permeability value is 930mm/s, and the wrinkle recovery grade is 3 grade.
Example 3
A method for preparing pure flax grey cloth interwoven by dry-spun and wet-spun flax yarns is used for preparing a bed sheet by weaving twill grey cloth, and the specific process flow is as follows:
the wet-spun linen yarn with 48 metric counts and the twist coefficient of 320 is used as weft yarn, the yarn count is 40 metric counts, the dry-spun linen yarn with the twist coefficient of 600 is used as warp yarn, the sizing is carried out by warping and using a low-temperature sizing technology, and the formula of the sizing agent is as follows: in 1000 liters of slurry, 60kg of phosphate ester-oxidized potato starch, 1.5kg of glycerol, 2kg of emulsifying wax, a rapid penetrating agent T1kg and 1.5kg of an antistatic agent. The preparation process of the oxidized phosphate potato starch comprises the following steps: the concentration of the potato starch milk is 50 percent, the dosage of hydrogen peroxide is 2 percent of the dry weight of the starch, the dosage of sodium tripolyphosphate is 30 percent of the dry weight of the starch, the reaction is carried out for 45min at 40 ℃, and the pH value is controlled to be 4. The substitution degree of the prepared phosphate oxide potato starch is 0.25, the gelatinization temperature is 50 ℃, and when the solid content is 6%, the viscosity of the starch slurry is 15 mPa.S. In order to prevent temperature dissipation during slashing, the temperature of a slashing tank is determined to be 55 ℃, the temperature of the slashing is enabled to be 50 ℃, the slashing speed is 40m/min, and the slashing sizing percentage is controlled to be 5%. After slashing is stranded, the speed of the slashing is adjusted to be 40m/min, the temperature of a drying cylinder is 130 ℃, the moisture regain of the slashing after being dried is controlled to be 16 percent and is slightly larger than the moisture regain of the linen base yarn so as to enhance the fatigue resistance and the wear resistance of the warp, and the slashing is used for subsequent weaving on a loom. The weave structure is twill weave, and the obtained pure flax woven grey cloth has the surface density of 150g/m 2 Radial fractureThe strength is 398N, the weft fracture strength is 370N, the wear-resisting times are 10000 times, the air permeability value is 1090mm/s, and the wrinkle recovery grade is 3 grade.
Comparative example 1
Comparison of the effect of low temperature and high temperature slashing (except for temperature and type of size, the size formulation and process are the same as in example 3), the results of the same specification yarn (dry spun linen, 40 metric count, 600 twist multiplier) are shown in table 1.
TABLE 1 comparison of Low-temperature and high-temperature slashing effects
Type of slurry Slashing temperature (. degree.C.) Slashing end breakage rate (root. table. h) -1 ) Good axial ratio (%)
Potato starch 100 3.73 47
Oxidized phosphate potato starch 60 (example 3) 0.70 73
Oxidized phosphate potato starch 100 1.65 65
Comparative example 2
The warp and weft wet-spun linen was prepared by using the same process as in example 3, with the wet-spun linen yarn having a yarn count of 48 cm, a twist multiplier of 320 as the weft yarn, a yarn count of 40 cm and a twist multiplier of 600 as the warp yarn, and the results are shown in table 2.
TABLE 2 comparison of the Performance of the linen of the present invention compared to Wet-spun warp and weft
Figure BDA0003757796480000061
Figure BDA0003757796480000071
As can be seen from Table 2, the linen provided by the invention has slightly lower breaking strength than that of warp and weft pure wet-spun linen, but has fold recovery performance, wear resistance and pure flax wet-spun fabric which are close to those of the pure flax wet-spun linen, and high air permeability, maintains the style of the conventional flax wet-spun linen, can completely replace the conventional flax wet-spun linen with the short fiber dry-spun linen as the warp, and achieves the purposes of saving (fully utilizing) flax raw materials, shortening the spinning process, improving the spinning efficiency, saving energy and reducing emission.

Claims (10)

1. A method for preparing pure flax grey cloth interwoven with wet-spun flax yarns in a dry spinning mode comprises the following steps:
the dry-spun linen yarns are used as warp yarns, the wet-spun linen yarns are used as weft yarns, and the pure linen grey cloth is woven after warping and slashing processes, wherein the temperature of the slashing process is below 65 ℃.
2. The preparation method as claimed in claim 1, wherein the wet-spun linen yarn for the weft has a yarn count of 24-48 cm, a twist factor of 240-; the yarn count of the dry-spun linen yarn for the warp yarn is 20-40 cm, and the twist coefficient is 500-600.
3. The method for preparing the warp yarn of claim 1, wherein the sizing process is warp sizing, and the formula of the sizing agent is as follows: 60-110g/L of oxidized phosphate potato starch, 1.5-2.5g/L of glycerol, 1.5-2g/L of emulsifying wax, 0.5-2g/L of quick penetrating agent T and 1-2.5g/L of antistatic agent.
4. The method according to claim 3, wherein the method for preparing potato starch containing oxidized phosphate ester comprises: reacting potato starch milk, hydrogen peroxide and sodium tripolyphosphate at 40-50 deg.C for 45-60min, and controlling pH to 4-6, wherein the concentration of potato starch milk is 40-50%, the amount of hydrogen peroxide is 0.8-2% of dry weight of potato starch, and the amount of sodium tripolyphosphate is 10-30% of dry weight of potato starch.
5. The method of claim 4, wherein the degree of substitution of the oxidized phosphate ester potato starch is 0.2-0.25, and the gelatinization temperature is 50-60 ℃; when the solid content of the oxidized phosphate ester potato starch is 6%, the viscosity of the starch slurry is 15-20 mPa.s.
6. The manufacturing method according to claim 1, wherein the sizing process controls the temperature of the size to be 50-60 ℃ and the sizing speed to be 25-40m/min, so that the sizing percentage of the sizing is 5-8%.
7. The preparation method as claimed in claim 1, wherein the moisture regain of the slashing after drying is controlled to be 12-16% by adjusting the speed of the vehicle to be 20-40m/min and the temperature of the drying cylinder to be 110-130 ℃ after the slashing is split during the slashing process.
8. The method of making as set forth in claim 1 wherein said pure linen greige weave structure includes a plain weave or a twill weave.
9. A pure linen gray fabric prepared by the method of claim 1.
10. A pure linen gray fabric manufactured by the manufacturing method as claimed in claim 1, applied to clothing or home textile products.
CN202210859729.9A 2022-07-21 2022-07-21 Pure linen grey cloth interwoven with dry-spun and wet-spun linen yarns and preparation method thereof Pending CN115074889A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101624743A (en) * 2009-08-04 2010-01-13 山西绿洲纺织有限责任公司 Wet-spinning cordettes and preparation method thereof
CN101979732A (en) * 2010-11-15 2011-02-23 东华大学 Method for producing linen wet spinning high count yarns and plied yarns
CN102174740A (en) * 2011-03-21 2011-09-07 盐城悦弘织造有限公司 Sizing agent for slashing hemp yarn and preparation process thereof
CN104404670A (en) * 2014-11-05 2015-03-11 桐乡市天洋纺织有限公司 Production process for dry-spun flax yarns
CN109629163A (en) * 2019-01-23 2019-04-16 浙江工业职业技术学院 The manufacture craft of the pure flax Sofa cushion fabric of home textile

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101624743A (en) * 2009-08-04 2010-01-13 山西绿洲纺织有限责任公司 Wet-spinning cordettes and preparation method thereof
CN101979732A (en) * 2010-11-15 2011-02-23 东华大学 Method for producing linen wet spinning high count yarns and plied yarns
CN102174740A (en) * 2011-03-21 2011-09-07 盐城悦弘织造有限公司 Sizing agent for slashing hemp yarn and preparation process thereof
CN104404670A (en) * 2014-11-05 2015-03-11 桐乡市天洋纺织有限公司 Production process for dry-spun flax yarns
CN109629163A (en) * 2019-01-23 2019-04-16 浙江工业职业技术学院 The manufacture craft of the pure flax Sofa cushion fabric of home textile

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