CN110965329A - Sizing agent for yarn in steps and sizing method thereof - Google Patents
Sizing agent for yarn in steps and sizing method thereof Download PDFInfo
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- CN110965329A CN110965329A CN201910967813.0A CN201910967813A CN110965329A CN 110965329 A CN110965329 A CN 110965329A CN 201910967813 A CN201910967813 A CN 201910967813A CN 110965329 A CN110965329 A CN 110965329A
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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
- D06M15/03—Polysaccharides or derivatives thereof
- D06M15/11—Starch 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
- 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
- D06M13/03—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 with unsaturated hydrocarbons, e.g. alkenes, or alkynes
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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
- D06M13/10—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
- D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
- D06M13/2246—Esters of unsaturated carboxylic acids
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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
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/327—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof
- D06M15/333—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof of vinyl acetate; Polyvinylalcohol
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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
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/35—Abrasion, pilling or fibrillation resistance
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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
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/40—Reduced friction resistance, lubricant properties; Sizing compositions
Abstract
The invention belongs to the technical field of textile sizing, and particularly relates to sizing slurry for yarns in steps and a sizing method thereof. The coating comprises internal soaking slurry and external coating slurry, wherein the internal soaking slurry is a mixture of starch, propylene and water, and the external coating slurry is a mixture of polyvinyl alcohol and water. The yarn step-by-step sizing method is simple, easy to realize industrial production, greatly reduces the production cost, and obviously improves the strength increasing rate, the hairiness reducing rate, the wear resistance improving rate and the weaving efficiency on the premise of reducing redundant sizing.
Description
Technical Field
The invention belongs to the technical field of textile sizing, and particularly relates to sizing slurry for yarns in steps and a sizing method thereof.
Background
At present, the known sizing method is to perform sizing and drying once, the yarn strength can be increased due to the permeation of the slurry during sizing of the yarn, the better slurry permeation needs low-viscosity slurry and high-pressure slurry, the abrasion resistance of the yarn can be increased due to the coating of the slurry, and the better slurry coating needs high-concentration slurry and low-pressure slurry.
Aiming at improving the strength and the wear resistance of the yarn, domestic scholars propose some sizing process methods, and published documents are as the application of a two-high one-low sizing process to high-tightness polyester-cotton fabrics, the research on prewetting sizing mechanism and the application thereof, and the research on cotton yarn ecological sizing technology based on an atmospheric pressure plasma pretreatment technology. The methods mainly adopted by the above documents are: for high count yarn varieties with higher strength requirements, high-pressure sizing agent, low-viscosity and high-concentration sizing agent is required to be used for emphatically improving the strength of warp yarns; for the varieties of warp yarns easy to rub and ball in the weaving process, the requirement on the wear resistance of the warp yarns is higher, and the low-pressure slurry and the high-concentration slurry are used for emphasizing the improvement on the wear resistance of the yarns; for common varieties, the penetration or coating effect of the slurry is obtained by using the medium-pressure slurry force and medium concentration, so that the weaving performance of the warp yarns is ensured. The method can only improve the single performance of the yarn according to needs with emphasis, the optimal effect of combining strength and wear resistance of the warp cannot be achieved, meanwhile, in order to ensure that the warp after sizing has the optimal weaving performance, the warp is generally realized by adopting higher warp sizing rate, thus the sizing cost is increased, the hand feeling of the textile is negatively influenced, and the higher warp sizing rate is not beneficial to the green and environment-friendly requirements in the finishing and desizing processing process.
Compared with the foreign Sizing technology, Study of Novel slurry is focused on the Study of Novel slurry in Study of Novel captured Starch for Sizing and in industry of Crops, but the slurry used in the method is expensive and can not be used industrially.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: overcomes the defects of the prior art and provides sizing slurry for yarns in steps and a sizing method thereof. The yarn has the advantages that the strength and the wear resistance of the yarn are both considered, the yarn can be remarkably improved, redundant sizing is reduced, and the strength increasing rate, the hairiness reducing rate, the wear resistance improving rate and the weaving efficiency of the yarn are remarkably improved.
The sizing agent for the yarns in steps consists of internal soaking sizing agent and external coating sizing agent, wherein the internal soaking sizing agent is a mixture of starch, propylene and water, and the external coating sizing agent is a mixture of polyvinyl alcohol and water.
The compound mass ratio of the starch and the propylene is 3-4: 1.
the starch is a combination of any two of high-performance modified starch, phosphate starch or corn starch.
Propylene is a mixture of propylene and acrylic esters.
The mass concentration of the internally soaked slurry is 6-12%.
The mass concentration of the outer coating slurry is 3-6%.
The sizing method of the sizing agent for the yarns in steps comprises the following steps:
(1) preparation of internally impregnated slurry
Adding starch, propylene and water into a high-pressure size mixing barrel, stirring, introducing steam, heating to 110-;
(2) preparation of outer coating slurry
Adding polyvinyl alcohol and water into a high-pressure slurry mixing barrel for stirring, then introducing steam, heating to 110-115 ℃ for boiling and stewing, and adding water to a constant volume to obtain outer-layer coating slurry;
(3) the warp yarns are soaked and pressed in the internal soaking slurry
After being unwound by a warp beam, the warp yarn enters a size tank filled with size soaked inside, and size soaking and size pressing treatment is carried out;
(4) drying treatment
Introducing the yarn subjected to internal sizing dipping into the surface of a drying cylinder for drying treatment;
(5) the warp yarns are subjected to slurry dipping and grouting in the outer coating slurry
Introducing the dried yarn in the step (4) into a size tank filled with outer-layer coating size through a guide roller, and performing size soaking and pressing treatment;
(6) post-treatment
And drying the sized yarns in the steps, and then performing yarn splitting and winding.
Preferably, in the step (1), the starch, the propylene and the water are added into a high-pressure mixing barrel at the temperature of 25-30 ℃ and stirred for 10-15min, and the volume of the added water is 4-6 times of the volume of the starch and the acrylic acid.
Preferably, in the step (2), polyvinyl alcohol and water are added into a high-pressure mixing barrel at the temperature of 25-30 ℃ and stirred for 10-15min, and the volume of the added water is 6-10 times of that of the polyvinyl alcohol.
The temperature rising process in the step (1) is the same as the temperature rising process in the step (2), the stirring rotating speed is 960r/min, the temperature rising time is 15-20min, and the pressure in the high-pressure slurry mixing barrel reaches 0.1-0.15MPa when the temperature rises to 110-.
The slurry stewing conditions in the step (1) and the step (2) are the same, the slurry stewing temperature is 110-.
And (2) after water is added in the step (1) to a constant volume, controlling the mass concentration of the internally soaked slurry to be 6-12%.
And (3) after water is added to a constant volume in the step (2), controlling the mass concentration of the outer coating slurry to be 3-6%.
And (3) the pulp soaking process in the step (5) is the same, the pulp soaking temperature is 85-90 ℃, the pressure is 0KN, and the vehicle speed is 60 m/min.
And (3) grouting at 85-90 ℃, under 15-20KN and at 60 m/min.
And (4) the drying treatment is to introduce the sized yarn in the step (3) into a drying cylinder through a guide roller for drying treatment, wherein the drying temperature is 90-125 ℃, the vehicle speed is 60 m/min, and the pressure is 0 KN.
And (5) grouting at 85-90 ℃, under 10-15KN and at 60 m/min.
And (6) the post-treatment is to introduce the sized yarns in the steps into a drying cylinder through a guide roller for drying treatment, and perform yarn splitting and winding in a yarn splitting warp beam traction area through a yarn splitting roller.
And (6) drying at 90-125 deg.c and 60 m/min under 0 KN.
The sizing method of sizing slurry for the yarns in steps comprises the steps of sizing the yarns with polyvinyl alcohol, starch slurry and propylene slurry for multiple times in steps; in the multiple sizing processes, parameters such as slurry concentration, slurry roller pressure, sizing temperature, slurry type and the like can be independently controlled by sizing for one time; the sizing agent with different properties can be coated on the periphery of the yarn or soaked into the inner layer of the yarn according to requirements.
The sizing method of sizing slurry for the yarns in steps comprises the steps of firstly carrying out primary sizing when warp sizing is carried out, using a slurry formula which is beneficial to increasing the strength according to the characteristics of the yarns, and selecting the slurry concentration of 6-12%; and then, sizing for the second time, wherein a sizing agent formula which is beneficial to coating the outer layer of the yarn and increasing the wear resistance is used according to the characteristics of the yarn, and the concentration of the sizing agent is selected to be 3-6%.
The sizing method for sizing the sizing agent in steps on the yarn can separately carry out and separately control the sizing process for increasing the yarn strength and the sizing process for adhering yarn hairiness to improve the yarn wear resistance.
Compared with the prior art, the invention has the following beneficial effects:
the sizing agent and the sizing method for the yarns in steps have the advantages that the sizing method is simple, the industrial production is easy to realize, the production cost is greatly reduced, and the strength increasing rate, the hairiness reducing rate, the wear resistance improving rate and the weaving efficiency are obviously improved on the premise of reducing redundant sizing.
Drawings
FIG. 1 is a flow diagram of a conventional yarn sizing process;
FIG. 2 is a flow diagram of a step sizing yarn sizing process according to the present invention;
FIG. 3 is a schematic diagram of a traveling route of a sizing yarn at a sizing machine in steps;
FIG. 4 is a profile under an electron microscope of the sized size in the yarn of comparative example 1;
FIG. 5 distribution plot under an electron microscope of size in a yarn after sizing of example 1;
in the figure: 1. a warp beam; 2. a first stock chest; 3. a guide roller; 4. a second stock chest; 5. a drying cylinder; 6. a yarn separating roller; 7. a splitting warp beam traction area; 8. comparative example 1 yarn outer layer size; 9. comparative example 1 yarn inner layer size; 10. example 1 outer layer sizing of yarn; 11. example 1 yarn inner layer size.
Detailed Description
The present invention is further described below with reference to examples.
Example 1
The sizing agent for the yarns in steps consists of internal soaking sizing agent and external coating sizing agent, wherein the internal soaking sizing agent is a mixture of starch, propylene and water, and the external coating sizing agent is a mixture of polyvinyl alcohol and water.
The compounding mass ratio of the starch and the acrylic acid is 3.2: 1.
the starch is a mixture of high-performance modified starch, phosphate starch and corn starch.
Propylene is a mixture of propylene and acrylic esters.
The mass concentration of the internally impregnated slurry was 7%.
The mass concentration of the outer coating slurry is 3%.
The implementation variety is worsted 14.57tex pure cotton yarn fabric, and the sizing method of sizing slurry for the yarn in steps comprises the following steps:
(1) preparation of internally impregnated slurry
Adding 25Kg of high-performance modified starch, 50Kg of phosphate starch, 25Kg of corn starch, 25Kg of solid propylene, 30Kg of acrylate (liquid with solid content of 20%) and 6 times volume of soft water at 25 ℃ into a high-pressure size mixing barrel, stirring for 15min, introducing steam, heating to 112 ℃ and boiling, wherein in the heating process, the stirring speed is 960r/min, the heating time is 18min, and when the temperature is raised to 112 ℃, the pressure in the high-pressure size mixing barrel reaches 0.12 MPa; stewing the pulp at 112 deg.C for 25 min; adding water to a constant volume to obtain internal soaked slurry with a mass concentration of 7%.
(2) Preparation of outer coating slurry
Adding 50Kg of polyvinyl alcohol and 10 times of soft water into a high-pressure size mixing barrel at 25 ℃, stirring for 15min, introducing steam, heating to 112 ℃ and boiling, wherein in the heating process, the stirring speed is 960r/min, the heating time is 18min, and when the temperature is raised to 112 ℃, the pressure in the high-pressure size mixing barrel reaches 0.12 MPa; stewing the pulp at 112 deg.C for 25 min; and performing constant volume treatment to obtain outer coating slurry with the mass concentration of 3%.
(3) The warp yarns are soaked and pressed in the internal soaking slurry
And (3) after the warp yarn is unwound by a warp beam, the warp yarn enters a size tank filled with size soaked inside, and size soaking and size pressing are carried out, wherein the size soaking temperature is 88 ℃, the pressure is 0KN, the vehicle speed is 60 m/min, the size pressing temperature is 88 ℃, the pressure is 15KN, and the vehicle speed is 60 m/min.
(4) Drying treatment
And (3) introducing the sized yarns in the first step into a drying cylinder through a guide roller, and drying at 120 ℃ at a speed of 60 m/min under a pressure of 0 KN.
(5) The warp yarns are subjected to slurry dipping and grouting in the outer coating slurry
And (4) leading the dried yarns into a size tank filled with outer-layer coating size through a guide roller, and carrying out size soaking and size pressing treatment, wherein the size soaking temperature is 88 ℃, the pressure is 0KN, the vehicle speed is 60 m/min, the size pressing temperature is 90 ℃, the pressure is 10KN, and the vehicle speed is 60 m/min.
(6) Post-treatment
The yarn after sizing in the steps is led into a drying cylinder through a guide roller to be dried at the temperature of 120 ℃, the speed of 60 m/min and the pressure of 0KN, and then the yarn is subjected to yarn splitting and winding in a yarn splitting warp beam traction area through a yarn splitting roller.
FIG. 3 is a walking route diagram of sizing yarns in steps in a sizing machine, warp yarns are unwound from a warp beam 1, the warp yarns are fed into a first stock chest 2, sizing is carried out in the first stock chest 2 in a first step, size with good permeability and good yarn strength increasing effect is used as the size in the first stock chest 2, the sized yarns are dried and then are led into a second stock chest 4 through a guide roller 3, sizing is carried out in a second step, size with obvious effect on improving the wear resistance of the yarns, attaching hairiness and good flexibility of sizing films is used as the size in the second stock chest 4, the yarns are led into a drying cylinder 5 through the guide roller 3 after sizing in the steps and are dried, and then are subjected to yarn splitting and winding in a yarn splitting driving shaft traction area 7 through a yarn splitting roller 6 to produce a driving shaft with excellent yarn strength and wear resistance.
Comparative example 1
The production method is characterized in that the spun 14.57tex pure cotton yarn fabric is implemented, 25Kg of high-performance modified starch, 50Kg of phosphate starch, 25Kg of corn starch, 25Kg of solid propylene, 30Kg of acrylate (liquid with solid content of 20%), 50Kg of polyvinyl alcohol and 6 times of volume of soft water are added into a high-pressure size mixing barrel at 25 ℃, stirred for 15min, then steam is introduced, the temperature is raised to 112 ℃ for boiling, the stirring speed is 960r/min in the temperature raising process, the temperature raising time is 18min, and the pressure in the high-pressure size mixing barrel reaches 0.12MPa when the temperature is raised to 112 ℃; stewing the pulp at 112 deg.C for 25 min; adding water to a constant volume to obtain slurry with a mass concentration of 9%.
And (3) putting the yarn into a size tank filled with the size, and performing size soaking and size pressing treatment. The dipping temperature is 90 ℃, the pressure is 0KN, the vehicle speed is 60 m/min, the grouting temperature is 90 ℃, the pressure is 14KN, and the vehicle speed is 60 m/min.
The sized yarn is led into a drying cylinder through a guide roller to be dried, the drying temperature is 120 ℃, the vehicle speed is 60 m/min, the pressure is 0KN, and then the yarn is divided and wound through a dividing roller to be divided into a beam drawing area.
Example 2
The sizing agent for the yarns in steps consists of internal soaking sizing agent and external coating sizing agent, wherein the internal soaking sizing agent is a mixture of starch, propylene and water, and the external coating sizing agent is a mixture of polyvinyl alcohol and water.
The compounding mass ratio of the starch and the acrylic acid is 3.5: 1.
the starch is a mixture of high-performance modified starch, phosphate starch and corn starch.
Propylene is a mixture of propylene and acrylic esters.
The mass concentration of the internally impregnated slurry was 9%.
The mass concentration of the outer coating slurry is 4%.
The implementation variety is worsted 11.67tex pure cotton yarn fabric, and the sizing method of sizing slurry for the yarn in steps comprises the following steps:
(1) preparation of internally impregnated slurry
60Kg of high-performance modified starch, 25Kg of phosphate starch, 25Kg of corn starch, 25Kg of solid propylene, 30Kg of acrylate (liquid with solid content of 20%) and 5 times of volume of soft water are added into a high-pressure size mixing barrel at 25 ℃, stirred for 15min, then steam is introduced to heat up to 110 ℃ for boiling, the stirring speed is 960r/min and the heating time is 15min in the heating process, and the pressure in the high-pressure size mixing barrel reaches 0.1MPa when the temperature is raised to 110 ℃; stewing the pulp at 110 deg.C for 30 min; adding water to a constant volume to obtain internal soaked slurry with a mass concentration of 9%.
(2) Preparation of outer coating slurry
Adding 50Kg of polyvinyl alcohol and 8 times of soft water into a high-pressure size mixing barrel at 25 ℃, stirring for 15min, introducing steam, heating to 110 ℃ and boiling, wherein in the heating process, the stirring speed is 960r/min, the heating time is 15min, and when the temperature is increased to 110 ℃, the pressure in the high-pressure size mixing barrel reaches 0.1 MPa; stewing the pulp at 110 deg.C for 30 min; and (5) performing constant volume treatment to obtain outer coating slurry with the mass concentration of 4%.
(3) The warp yarns are soaked and pressed in the internal soaking slurry
And (3) after the warp yarns are unwound by the warp beam, the warp yarns enter a size tank filled with size soaked inside, and size soaking and size pressing are carried out, wherein the size soaking temperature is 85 ℃, the pressure is 0KN, the vehicle speed is 60 m/min, the size pressing temperature is 85 ℃, the pressure is 17KN, and the vehicle speed is 60 m/min.
(4) Drying treatment
And (3) introducing the sized yarns in the first step into a drying cylinder through a guide roller, and drying at 90 ℃, 60 m/min at the speed and 0 KN.
(5) The warp yarns are subjected to slurry dipping and grouting in the outer coating slurry
And (4) leading the dried yarns into a size tank filled with outer-layer coating size through a guide roller, and carrying out size soaking and size pressing treatment, wherein the size soaking temperature is 85 ℃, the pressure is 0KN, the vehicle speed is 60 m/min, the size pressing temperature is 85 ℃, the pressure is 12KN, and the vehicle speed is 60 m/min.
(6) Post-treatment
The yarn after sizing in the steps is led into a drying cylinder through a guide roller to be dried at the temperature of 90 ℃, the speed of 60 m/min and the pressure of 0KN, and then the yarn is subjected to yarn splitting and winding in a yarn splitting warp beam traction area through a yarn splitting roller.
The step sizing yarn described in example 2 traveled in the sizing machine in the same manner as in example 1.
Comparative example 2
The implementation variety is worsted 11.67tex pure cotton yarn fabric, 60Kg of high-performance modified starch, 25Kg of phosphate starch, 25Kg of corn starch, 25Kg of solid propylene, 30Kg of acrylic ester (liquid with solid content of 20%), 50Kg of polyvinyl alcohol and 5 times volume of soft water are added into a high-pressure size mixing barrel at 25 ℃, stirred for 15min, then steam is introduced to heat up to 110 ℃ for boiling, the stirring speed is 960r/min in the heating process, the heating time is 15min, and when the temperature is raised to 110 ℃, the pressure in the high-pressure size mixing barrel reaches 0.1 MPa; stewing the pulp at 110 deg.C for 30 min; adding water to a constant volume to obtain internal soaked slurry with a mass concentration of 11%.
And (3) putting the yarn into a size tank filled with the size, and performing size soaking and size pressing treatment. The slurry dipping temperature is 85 ℃, the pressure is 0KN, the vehicle speed is 60 m/min, the slurry pressing temperature is 85 ℃, the pressure is 15KN, and the vehicle speed is 60 m/min.
The sized yarn is led into a drying cylinder through a guide roller to be dried, the drying temperature is 90 ℃, the vehicle speed is 60 m/min, the pressure is 0KN, and then the yarn is divided and wound through a dividing roller to be divided into a beam drawing area.
Example 3
The sizing agent for the yarns in steps consists of internal soaking sizing agent and external coating sizing agent, wherein the internal soaking sizing agent is a mixture of starch, propylene and water, and the external coating sizing agent is a mixture of polyvinyl alcohol and water.
The compounding mass ratio of the starch and the acrylic acid is 4: 1.
Starches are mixtures of high performance modified starches with corn starch.
Propylene is a mixture of propylene and acrylic esters.
The mass concentration of the internally impregnated slurry was 11%.
The mass concentration of the outer coating slurry is 5%.
The implementation variety is worsted 8.33tex pure cotton yarn fabric, and the sizing method of sizing slurry for the yarn in steps comprises the following steps:
(1) preparation of internally impregnated slurry
Adding 75Kg of high-performance modified starch, 25Kg of corn starch, 25Kg of solid propylene, 30Kg of acrylic ester (liquid) and 4 times of volume of soft water into a high-pressure size mixing barrel at 28 ℃, stirring for 10min, heating to 115 ℃ and boiling, wherein in the heating process, the stirring speed is 960r/min, the heating time is 20min, and when the temperature is raised to 115 ℃, the pressure in the high-pressure size mixing barrel reaches 0.15 MPa; stewing the pulp at 115 deg.C for 20 min; adding water to a constant volume to obtain internal soaked slurry with a mass concentration of 11%.
(2) Preparation of outer coating slurry
Adding 50Kg of polyvinyl alcohol and 6 times of soft water into a high-pressure size mixing barrel at 28 ℃, stirring for 10min, heating to 115 ℃ and boiling, wherein in the heating process, the stirring speed is 960r/min, the heating time is 20min, and when the temperature is raised to 115 ℃, the pressure in the high-pressure size mixing barrel reaches 0.15 MPa; stewing the pulp at 115 ℃ for 20 min; and (5) performing constant volume treatment to obtain the outer coating slurry with the mass concentration of 5%.
(3) The warp yarns are soaked and pressed in the internal soaking slurry
And (3) after the warp yarns are unwound by the warp beam, the warp yarns enter a size tank filled with size soaked inside, and size soaking and size pressing are carried out, wherein the size soaking temperature is 90 ℃, the pressure is 0KN, the vehicle speed is 60 m/min, the size pressing temperature is 90 ℃, the pressure is 20KN, and the vehicle speed is 60 m/min.
(4) Drying treatment
And (3) introducing the sized yarns in the first step into a drying cylinder through a guide roller, and drying at 120 ℃ at a speed of 60 m/min under a pressure of 0 KN.
(5) The warp yarns are subjected to slurry dipping and grouting in the outer coating slurry
And (4) leading the dried yarns into a size tank filled with outer-layer coating size through a guide roller, and carrying out size soaking and size pressing treatment, wherein the size soaking temperature is 90 ℃, the pressure is 0KN, the vehicle speed is 60 m/min, the size pressing temperature is 90 ℃, the pressure is 14KN, and the vehicle speed is 60 m/min.
(6) Post-treatment
The yarn after sizing in the steps is led into a drying cylinder through a guide roller to be dried at the temperature of 120 ℃, the speed of 60 m/min and the pressure of 0KN, and then the yarn is subjected to yarn splitting and winding in a yarn splitting warp beam traction area through a yarn splitting roller.
The step sizing yarn described in example 3 traveled in the sizing machine in the same manner as in example 1.
Comparative example 3
The implementation variety is that the spinning 5.835tex plying pure cotton yarn plus material, 75Kg of high performance modified starch, 25Kg of corn starch, 25Kg of solid propylene, 30Kg of acrylic ester (liquid), 40Kg of polyvinyl alcohol and 4 times volume of soft water are added into a high pressure size mixing barrel at 28 ℃, stirred for 10min, then heated to 115 ℃ and boiled, the stirring speed is 960r/min in the heating process, the heating time is 20min, and when the temperature is heated to 115 ℃, the pressure in the high pressure size mixing barrel reaches 0.15 MPa; stewing the pulp at 115 deg.C for 20 min; adding water to a constant volume to obtain slurry with a mass concentration of 13%.
And (3) putting the yarn into a size tank filled with the size, and performing size soaking and size pressing treatment. The dipping temperature is 90 ℃, the pressure is 0KN, the vehicle speed is 60 m/min, the grouting temperature is 90 ℃, the pressure is 16KN, and the vehicle speed is 60 m/min.
The sized yarn is led into a drying cylinder through a guide roller to be dried, the drying temperature is 120 ℃, the vehicle speed is 60 m/min, the pressure is 0KN, and then the yarn is divided and wound through a dividing roller to be divided into a beam drawing area.
The yarn properties and weaving results after sizing of example 1 and comparative example 1 were compared and the results are shown in table 1:
table 1 comparison of yarn properties and weaving results of example 1 with comparative example 1
| Sizing method | Sizing rate | Rate of increase of strength | Hair feather reduction rate | Wear resistance improvement rate | Efficiency of weaving |
| Conventional methods | 9.1％ | 18.34％ | 81.34％ | 219.3％ | 92.88 |
| Step by step method | 7.7％ | 20.57％ | 88.57％ | 411.2％ | 95.21％ |
The yarn properties and weaving results after sizing of example 2 and comparative example 2 were compared and the results are shown in table 2:
table 2 comparison of yarn performance and weaving effect between example 2 and comparative example 2
| Sizing method | Sizing rate | Rate of increase of strength | Hair feather reduction rate | Wear resistance improvement rate | Efficiency of weaving |
| Conventional methods | 10.7％ | 23.45％ | 80.45％ | 354.48％ | 90.25％ |
| Step by step method | 8.3％ | 27.24％ | 89.86％ | 451.61％ | 93.85％ |
The yarn properties and weaving results after sizing of example 3 and comparative example 3 were compared and the results are shown in table 3: table 3 comparison of yarn properties and weaving effects of example 3 with comparative example 3
| Sizing method | Sizing rate | Rate of increase of strength | Hair feather reduction rate | Wear resistance improvement rate | Efficiency of weaving |
| Conventional methods | 13.5％ | 25.84％ | 85.61％ | 367.52％ | 90.64％ |
| Step by step method | 11.6％ | 28.16％ | 92.73％ | 513.82％ | 93.72％ |
Claims (10)
1. A sizing agent for yarn in steps is characterized in that: the coating comprises internal soaking slurry and external coating slurry, wherein the internal soaking slurry is a mixture of starch, propylene and water, and the external coating slurry is a mixture of polyvinyl alcohol and water.
2. The yarn step size according to claim 1, characterized in that: the compound mass ratio of the starch and the propylene is 3-4: 1.
3. the yarn step size according to claim 1, characterized in that: the starch is a composition of any two of high-performance modified starch, phosphate starch or corn starch; propylene is a mixture of propylene and acrylic esters.
4. The yarn step size according to claim 1, characterized in that: the mass concentration of the internally soaked slurry is 6-12%; the mass concentration of the outer coating slurry is 3-6%.
5. A method of sizing a yarn in steps according to claim 1, characterized in that: the method comprises the following steps:
(1) preparation of internally impregnated slurry
Adding starch, propylene and water into a high-pressure size mixing barrel, stirring, introducing steam, heating to 110-;
(2) preparation of outer coating slurry
Adding polyvinyl alcohol and water into a high-pressure slurry mixing barrel for stirring, then introducing steam, heating to 110-115 ℃ for boiling and stewing, and adding water to a constant volume to obtain outer-layer coating slurry;
(3) the warp yarns are soaked and pressed in the internal soaking slurry
After being unwound by a warp beam, the warp yarn enters a size tank filled with size soaked inside, and size soaking and size pressing treatment is carried out;
(4) drying treatment
Introducing the yarn subjected to internal sizing dipping into the surface of a drying cylinder for drying treatment;
(5) the warp yarns are subjected to slurry dipping and grouting in the outer coating slurry
Introducing the dried yarn in the step (4) into a size tank filled with outer-layer coating size through a guide roller, and performing size soaking and pressing treatment;
(6) post-treatment
And drying the sized yarns in the steps, and then performing yarn splitting and winding.
6. A method of sizing a yarn in steps according to claim 5, characterised in that: the temperature rising process in the step (1) is the same as the temperature rising process in the step (2), the stirring rotating speed is 960r/min, the temperature rising time is 15-20min, and the pressure in the high-pressure slurry mixing barrel reaches 0.1-0.15MPa when the temperature rises to 110-.
7. A method of sizing a yarn in steps according to claim 5, characterised in that: the slurry stewing conditions in the step (1) and the step (2) are the same, the slurry stewing temperature is 110-.
8. A method of sizing a yarn in steps according to claim 5, characterised in that: and (3) the pulp soaking process in the step (5) is the same, the pulp soaking temperature is 85-90 ℃, the pressure is 0KN, and the vehicle speed is 60 m/min.
9. A method of sizing a yarn in steps according to claim 5, characterised in that: the grouting temperature in the step (3) is 85-90 ℃, the pressure is 15-20KN, and the vehicle speed is 60 m/min; and (5) grouting at 85-90 ℃, under 10-15KN and at 60 m/min.
10. A method of sizing a yarn in steps according to claim 5, characterised in that: drying treatment in the step (4), wherein the drying temperature is 90-125 ℃, the vehicle speed is 60 m/min, and the pressure is 0 KN; and (6) drying at 90-125 deg.c and 60 m/min under 0 KN.
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| CN201910967813.0A CN110965329A (en) | 2019-10-12 | 2019-10-12 | Sizing agent for yarn in steps and sizing method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112553902A (en) * | 2020-12-16 | 2021-03-26 | 江苏联发高端纺织技术研究院 | Production process for secondary sizing of yarn-dyed fabric |
| CN114150419A (en) * | 2021-12-07 | 2022-03-08 | 吴江市青艳纺织整理有限公司 | Preparation process of high-toughness woven fabric |
| CN115449981A (en) * | 2022-08-17 | 2022-12-09 | 浙江惠达纺织服装有限公司 | Denim sizing process |
-
2019
- 2019-10-12 CN CN201910967813.0A patent/CN110965329A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112553902A (en) * | 2020-12-16 | 2021-03-26 | 江苏联发高端纺织技术研究院 | Production process for secondary sizing of yarn-dyed fabric |
| CN114150419A (en) * | 2021-12-07 | 2022-03-08 | 吴江市青艳纺织整理有限公司 | Preparation process of high-toughness woven fabric |
| CN115449981A (en) * | 2022-08-17 | 2022-12-09 | 浙江惠达纺织服装有限公司 | Denim sizing process |
| CN115449981B (en) * | 2022-08-17 | 2024-01-05 | 浙江惠达纺织服装有限公司 | Jean sizing process |
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