CN112962192B - Cool elastic jean fabric and preparation method thereof - Google Patents
Cool elastic jean fabric and preparation method thereof Download PDFInfo
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- CN112962192B CN112962192B CN202110234116.1A CN202110234116A CN112962192B CN 112962192 B CN112962192 B CN 112962192B CN 202110234116 A CN202110234116 A CN 202110234116A CN 112962192 B CN112962192 B CN 112962192B
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
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Abstract
The invention relates to the field of textiles, in particular to a cool elastic jean fabric and a preparation method thereof. The cool elastic jean fabric is formed by interweaving warp yarns and weft yarns, the warp yarns consist of first component warp yarns and second component warp yarns, and the first component warp yarns are yarns formed by blending functional spandex, cotton fibers and bamboo fibers; the second component warp yarn is a yarn formed by blending cotton fibers and functional spandex; the weft yarns are formed by wrapping functional spandex core-spun yarns by blended yarns of cotton fibers and bamboo fibers; the preparation raw materials of the functional spandex comprise functional jade powder, isocyanate, oligomer dihydric alcohol, a chain extender, a solvent, a chain terminator and an auxiliary agent. The functional spandex prepared by the functional jade powder has elasticity, air permeability and cool feeling, and has good comfort.
Description
Technical Field
The invention relates to the field of textiles, in particular to cool elastic jean fabric and a preparation method thereof.
Background
Along with the increase of social economy, the living quality of people is continuously improved, the requirements of people on clothes do not rise from the requirements of basic functions such as shielding, protecting and resisting cold to the requirements of functionality, health, environmental protection, comfort and the like, and the cool air permeability of the fabric is higher and higher. The jean fabric is fashionable and popular and is very popular with people, the cool and breathable jean fabric is increasingly popular, and particularly when people take exercises by wearing clothes made of the cool and breathable fabric, the clothes made of the cool and breathable fabric enable people to have better experience. The continuous emergence of the fiber material brings great promotion space for the development of the jean fabric. The functional fibers endow the denim fabric with functionality and comfort, and the denim fabric is widely applied by designers, and the elastic fibers such as Dow XLA, T-400 and the like enable the development of the elastic denim fabric to be possible, thereby meeting the requirements of people on the aspects of fitness, stretching property and the like of the denim fabric. Some designers dip spandex in functional solutions to prepare cool functional spandex and use the spandex to prepare fabrics, but the prepared fabrics have single functions, poor cool feeling and short cool feeling retention time.
Disclosure of Invention
In order to solve the technical problems, the invention provides a cool elastic jean fabric, which is formed by interweaving warp yarns and weft yarns, wherein the warp yarns consist of first component warp yarns and second component warp yarns, and the first component warp yarns are yarns formed by blending functional spandex, cotton fibers and bamboo fibers; the second component warp yarn is a yarn formed by blending cotton fibers and functional spandex; the weft yarns are formed by wrapping functional spandex core-spun yarns by blended yarns of cotton fibers and bamboo fibers; the preparation raw materials of the functional spandex comprise functional jade powder, isocyanate, oligomer dihydric alcohol, a chain extender, a solvent, a chain terminator and an auxiliary agent.
As a preferable technical scheme of the invention, the chain extender is an alcohol chain extender.
In a preferred embodiment of the present invention, the alcohol chain extender is at least one selected from the group consisting of 1, 3-propanediol, 1, 4-butanediol, 1, 6-hexanediol, glycerol, diethylaminoethanol, sorbitol, trimethylolpropane, 2, 4-tetramethyl-1, 3-cyclobutanediol, diethylene glycol, triethylene glycol, diethylaminoethanol, neopentyl glycol, and 2-methyl-1, 3-propanediol.
As a preferred technical scheme of the invention, the preparation method of the functional jade powder comprises the following steps: mixing jade powder, mica powder, zinc oxide whisker and absolute ethyl alcohol, adjusting the pH value of a reaction system to 3-5 by formic acid, mixing and stirring at 50-70 ℃ for 1-2h, adding a coupling agent, and reacting for 1-2h to obtain the functional jade powder.
As a preferable technical scheme of the invention, the first component warp yarn is formed by blending functional spandex, cotton fiber and bamboo fiber.
As a preferred technical solution of the present invention, the second component warp yarn is a yarn blended by cotton fiber and functional spandex.
As a preferable technical scheme, the spandex core-spun yarn is formed by taking functional spandex as a core yarn and externally wrapping a blended yarn of cotton fibers and bamboo fibers.
As a preferable technical scheme of the invention, the coating degree of the spandex core-spun yarn is 900-1500 circles/m.
The second aspect of the invention provides a preparation method of cool elastic jean fabric, which comprises the following preparation steps:
s1: and (3) enabling the first component warp yarns and the second component warp yarns to be distributed in a number of 1: arranging at a ratio of 1 to obtain warp yarns;
s2: and weaving the warps subjected to the combined process of spooling, warping and sizing and the spooled wefts on a machine, and then carrying out after-treatment to obtain the cool elastic jean fabric.
As a preferable technical scheme of the invention, the fabric weave structure of the cool elastic jean fabric adopts two-upper-lower-left twill.
Has the advantages that:
1. the jean fabric has good cool feeling and elasticity, the cool feeling coefficient is more than 2.4, and the clothes prepared by the fabric has good heat dissipation and elasticity, so that people have good comfort when wearing the clothes;
2. the functional spandex is prepared by using the functional jade powder, and the functional spandex enables the fabric to have elasticity, ventilation and cool feeling, and has good comfort;
3. the jean fabric of the invention accords with the detection of first-class products of jean clothes and the detection of national basic safety standard of textile;
Detailed Description
The present invention will be more readily understood by reference to the following detailed description of preferred embodiments of the invention and the examples included therein. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control.
As used herein, the term "prepared from" \8230a "is synonymous with" comprising ". The terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.
The conjunction "consisting of 8230excluding any unspecified elements, steps or components. If used in a claim, the phrase is intended to claim as closed, meaning that it does not contain materials other than those described, except for the conventional impurities associated therewith. When the phrase "consisting of 8230title" appears in a clause of the subject matter of the claims and not immediately after the subject matter, it defines only the elements described in the clause; no other elements are excluded from the claims as a whole.
When an amount, concentration, or other value or parameter is expressed as a range, preferred range, or as a range of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when the range "1 to 5" is disclosed, the described range should be interpreted to include the ranges "1 to 4", "1 to 3", "1 to 2 and 4 to 5", "1 to 3 and 5", and the like. When a range of values is described herein, unless otherwise specified, the range is intended to include the endpoints thereof, and all integers and fractions within the range.
The singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. "optional" or "any" means that the subsequently described event or events may or may not occur, and that the description includes instances where the event occurs and instances where it does not.
Approximating language, as used herein throughout the specification and claims, is intended to modify a quantity, such that the invention is not limited to the specific quantity, but includes portions that are literally received for modification without substantial change in the basic function to which the invention is related. Accordingly, the use of "about" to modify a numerical value means that the invention is not limited to the precise value. In some instances, the approximating language may correspond to the precision of an instrument for measuring the value. In the present description and claims, range limitations may be combined and/or interchanged, including all sub-ranges contained therein if not otherwise stated.
In order to solve the technical problems, the invention provides a cool elastic jean fabric, which is formed by interweaving warp yarns and weft yarns, wherein the warp yarns consist of first component warp yarns and second component warp yarns, and the first component warp yarns are yarns formed by blending functional spandex, cotton fibers and bamboo fibers; the second component warp yarn is a yarn formed by blending cotton fibers and functional spandex; the weft yarns are formed by wrapping functional spandex core-spun yarns by blended yarns of cotton fibers and bamboo fibers; the preparation raw materials of the functional spandex comprise functional jade powder, isocyanate, oligomer dihydric alcohol, a chain extender, a solvent, a chain terminator and an auxiliary agent.
Functional spandex
The preparation method of the functional spandex comprises the following steps:
(1) Weighing raw materials: weighing corresponding parts by weight of functional jade powder, isocyanate, oligomer dihydric alcohol, a chain extender, an auxiliary agent, a solvent and a chain terminator for later use;
(2) Preparing functional jade powder slurry: circularly grinding the functional jade powder, the auxiliary agent and the solvent in a grinding machine for 30-40h to obtain dispersed functional jade powder slurry;
(3) Preparation of prepolymer solution: stirring and mixing isocyanate and oligomer dihydric alcohol, and reacting at 70-80 ℃ for 1-2h to prepare a prepolymer; cooling the prepolymer to 40-60 ℃, and adding a solvent to prepare a prepolymer solution with the mass concentration of 36-40%;
(4) Preparation of polyurethane urea: dissolving a chain extender and a chain terminator into a solvent to form a reaction solution with the mass concentration of 7.2-8%, and adding the reaction solution into a prepolymer solution to carry out a chain extension reaction and a chain termination reaction to form a polyurethane urea solution;
(5) Preparing a spinning solution: adding the functional jade powder slurry into a polyurethane urea solution, uniformly mixing under the condition of stirring, and then curing, defoaming and filtering to obtain a spinning solution;
(6) Preparation of functional spandex: and extruding, stretching and drying the spinning solution by adopting a dry spinning method to obtain the functional spandex.
In one embodiment, the functional jade powder slurry has a mass concentration of 40 to 50%, preferably 45%.
In one embodiment, the weight ratio of jade powder to adjuvant is (26-30): 1; preferably, the ratio of 27:1.
in one embodiment, the isocyanate to oligomer diol molar ratio is 1.68:1.
in one embodiment, the weight ratio of chain extender to chain terminator is (14-15): 1, preferably 14.6:1.
in one embodiment, (moles of hydroxyl groups in the chain extender + moles of amine groups in the chain terminator): mole number of isocyanate groups in prepolymer solution = (1-1.05): 1, preferably 1.02:1.
in one embodiment, the functional jade powder comprises 2 to 4% by weight of the functional spandex, preferably 3%.
Wherein, the dry spinning is the same spinning method in the field, and functional spandex with different specifications can be prepared by controlling the dry spinning conditions.
Functional jade powder
In one embodiment, the method for preparing the functional jade powder comprises the following steps: mixing jade powder, mica powder, zinc oxide whisker and absolute ethyl alcohol, adjusting the pH value of a reaction system to 3-5 by formic acid, mixing and stirring at 50-70 ℃ for 1-2h, adding a coupling agent, and reacting for 1-2h to obtain the functional jade powder.
In one embodiment, the weight ratio of the jade powder, the mica powder and the zinc oxide whisker is (20-25): (5-8): 1; further preferably, the weight ratio of the jade powder, the mica powder and the zinc oxide whisker is 23:6.8:1.
in one embodiment, the weight of the coupling agent is 1.2-2% of the total weight of the jade powder, the mica powder and the zinc oxide whisker, and is preferably 1.5%.
In one embodiment, the coupling agent is a silane coupling agent. For example, silane coupling agent KH550, silane coupling agent KH560, and silane coupling agent KH570.
In one embodiment, the coupling agent is a silane coupling agent KH560.
In one embodiment, the jade powder has an average particle size of 300 to 600 mesh, preferably 325 mesh.
In one embodiment, the mica powder has an average particle size of 200 to 400 mesh, preferably 300 mesh.
In one embodiment, the jade powder is purchased from processing plants in the Lingshou county for the shipment of mineral products.
In one embodiment, the mica powder is purchased from a processing plant for the mineral products in the lingshou county.
In one embodiment, the zinc oxide whiskers are 1-2um in diameter and 40-50um in length; further preferably, the zinc oxide whiskers are 1.6um in diameter and 45um in length.
In one embodiment, the zinc oxide whisker is purchased from new hangzhou gekang materials, inc.
The applicant finds that the fabric has cool feeling by adding the functional jade powder into the system, but the cool feeling performance of the fabric prepared by the pure jade powder is poor. Probably because the mica powder has two layers of silica tetrahedrons which sandwich a layer of aluminum octahedron structure, and the mica powder and the jade powder interact under the acidic condition to form a good heat conduction path, the cool feeling performance of the jean fabric is improved. The applicant finds that the addition of the zinc oxide whiskers can not only increase the cool feeling of the fabric, but also increase the air permeability of the fabric to a certain extent, on one hand, the reason is that the zinc oxide whiskers have a tetrapod-shaped structure, and the chain extension and the neopentyl glycol are inserted between the layered structures of the mica powder in the reaction process, so that the interlayer spacing is enlarged, the zinc oxide whiskers of the tetrapod-shaped structure are partially inserted between the layers of the zinc oxide whiskers, the thermal conductivity of the system is increased through the mutual synergistic effect of the zinc oxide whiskers and the mica powder, the cool feeling of the fabric is increased, on the other hand, the tetrapod-shaped structure of the zinc oxide whiskers enables more gaps in the fabric, and the air permeability of the fabric is increased.
Oligomer diols
In one embodiment, the oligomeric diol is polytetrahydrofuran ether glycol.
In one embodiment, the polytetrahydrofuran ether glycol has a number average molecular weight of 1500 to 2500, preferably 2000.
In one embodiment, the polytetrahydrofuran ether glycol is korean PTG-PTMEG2000.
Chain extender
In one embodiment, the chain extender is an alcohol chain extender.
In one embodiment, the alcoholic chain extender is selected from at least one of 1, 3-propanediol, 1, 4-butanediol, 1, 6-hexanediol, glycerol, diethylaminoethanol, sorbitol, trimethylolpropane, 2, 4-tetramethyl-1, 3-cyclobutanediol, diethylene glycol, triethylene glycol, diethylaminoethanol, neopentyl glycol, 2-methyl-1, 3-propanediol.
In a preferred embodiment, the alcoholic chain extender is a combination of 2, 4-tetramethyl-1, 3-cyclobutanediol and neopentyl glycol, wherein the weight ratio of 2, 4-tetramethyl-1, 3-cyclobutanediol to neopentyl glycol is (5.6-8): 1; further preferably, the weight ratio of said 2, 4-tetramethyl-1, 3-cyclobutanediol to neopentyl glycol is from 6.8:1.
chain terminator
In one embodiment, the chain terminator is at least one of diethylamine, dipropylamine, cyclohexylamine ethanolamine; diethylamine is preferred.
Solvent(s)
In one embodiment, the solvent is an aprotic polar solvent. Examples of the aprotic polar solvent include N, N-dimethylformamide, N-dimethylacetamide, hexamethylphosphoramide, and dimethylsulfoxide. N, N-dimethylacetamide is preferred.
Auxiliary agent
In one embodiment, the adjuvant is at least one of a lubricant, an antioxidant, a matting agent.
In a preferred embodiment, the auxiliary agent is a combination of lubricant, antioxidant and flatting agent, and the weight ratio of the auxiliary agent to the flatting agent is (1-1.5): (1.2-1.8): 1.
the lubricant is not limited, and lubricants suitable for use in textile systems are used in the present system, magnesium stearate (CAS number: 557-04-0).
The antioxidant is not limited, and antioxidants suitable for textile systems are all used in the system of the present invention, and antioxidant 1790 is used in the present invention.
The matting agent is not limited, and the matting agents suitable for textile systems are all used in the system of the invention, and titanium dioxide is used in the invention.
First component warp yarn
In one embodiment, the first component warp yarns are blended by functional spandex, cotton fibers and bamboo fibers; the functional spandex in the first component warp accounts for 15-25% by mass; the bamboo fibers in the first component warp accounts for 5-10% by mass; the mass percentage of the cotton fiber in the first component warp yarn is 70-75%.
In a preferred embodiment, the functional spandex in the first component warp yarn accounts for 20% by mass; the bamboo fibers in the first component warp accounts for 8% by mass; the mass percentage of the cotton fibers in the first component warp yarn is 72%.
In one embodiment, the bamboo fiber is purchased from Shandong Asahi spinning Co., ltd.
Second component warp yarn
In one embodiment, the second component warp yarns are yarns blended from cotton fibers and functional spandex; the functional spandex in the second component of warp accounts for 20-30% by mass; the spandex of the cotton fiber in the second component warp yarn accounts for 70-80% by mass.
In a preferred embodiment, the functional spandex in the second component warp yarn accounts for 25% by mass; the spandex of the cotton fiber in the second component warp yarn accounts for 75% by mass.
In one embodiment, the cotton fibers are purchased from rainbow textile, inc.
Spandex core-spun yarn
In one embodiment, the spandex core-spun yarn is a blended yarn of functional spandex serving as a core yarn and cotton fiber and bamboo fiber, wherein the weight ratio of the cotton fiber to the bamboo fiber blended yarn is (70-80): (20-30), preferably 75:25.
in one embodiment, the spandex core-spun yarn has a coverage of 900 to 1500 turns/m; further preferably, the coating degree of the spandex-covered core yarn is 1000-1300 circles/m; still more preferably, the coverage of the spandex core-spun yarn is 1200 circles/m.
The coating degree refers to the number of turns of the blended yarn of the outer coating cotton fiber and the bamboo fiber which is spirally wrapped on the core yarn of 1 m.
By blending the cotton fibers and the bamboo fibers, the defect of poor wrinkle resistance of pure cotton fabrics can be overcome, and the air permeability, the antibacterial performance and other performances of the fabric are improved to a certain extent. The applicant finds that the denim fabric prepared by using the functional spandex prepared by using the 2,2, 4-tetramethyl-1, 3-cyclobutanediol and the neopentyl glycol in a specific ratio as chain extension and then preparing the spandex core-spun yarn with the coverage of 900-1500 circles/m by using the functional spandex has better elasticity. Probably because more side methyl groups in the 2, 4-tetramethyl-1, 3-cyclobutanediol form steric hindrance in a system to influence the bonding of hydrogen bonds between hard segments of spandex, intermolecular force is weakened to increase the shape recovery rate of the spandex, and the neopentyl glycol and the 2, 4-tetramethyl-1, 3-cyclobutanediol reduce the volume effect in the system and increase the shape recovery rate; when the coating degree of the spandex core-spun yarn is too low, the outer covered yarn is stretched and has longer elongation, but when the coating degree of the spandex core-spun yarn is too high, the strength of the yarn is reduced, the elongation is also reduced, and the elasticity of the prepared fabric is reduced.
The second aspect of the invention provides a preparation method of cool elastic jean fabric, which comprises the following preparation steps:
s1: and (3) enabling the first component warp yarns and the second component warp yarns to be distributed in a number of 1: arranging at a ratio of 1 to obtain warp yarns;
s2: and weaving the warps subjected to the combined process of spooling, warping and sizing and the spooled wefts on a machine, and then carrying out after-treatment to obtain the cool elastic jean fabric.
In one embodiment, the process flow of the after-finishing is: grey cloth seam turning → singeing → desizing → stentering → preshrinking and sizing → jean fabric.
In one embodiment, the warp and weft yarn density before weaving on the machine in step S2 is: 426X 234 (root/10 cm).
In one embodiment, the fabric weave structure of the cool elastic jean fabric adopts two upper twills, one lower twills and one left twill.
The processes of blending, post-finishing and the like in the invention are common technologies in the field and are not described in detail herein.
The present invention will be specifically described below by way of examples. It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention.
In addition, the starting materials used are all commercially available, unless otherwise specified.
Examples
Example 1
The embodiment 1 of the invention provides a cool elastic jean fabric, which is formed by interweaving warp yarns and weft yarns, wherein the warp yarns consist of first component warp yarns and second component warp yarns, and the first component warp yarns are yarns formed by blending functional spandex, cotton fibers and bamboo fibers; the second component warp yarn is a yarn formed by blending cotton fibers and functional spandex; the weft yarns are formed by wrapping functional spandex core-spun yarns by blended yarns of cotton fibers and bamboo fibers; the preparation raw materials of the functional spandex comprise functional jade powder, isocyanate, oligomer dihydric alcohol, a chain extender, a solvent, a chain terminator and an auxiliary agent;
the preparation method of the functional spandex comprises the following steps: weighing raw materials: weighing corresponding parts by weight of functional jade powder, isocyanate, oligomer dihydric alcohol, a chain extender, an auxiliary agent, a solvent and a chain terminator for later use; (2) preparing functional jade powder slurry: circularly grinding the functional jade powder, the auxiliary agent and the solvent in a grinding machine for 30 hours to obtain dispersed functional jade powder slurry; (3) preparation of prepolymer solution: stirring and mixing isocyanate and oligomer dihydric alcohol, and reacting for 2 hours at 70 ℃ to prepare a prepolymer; cooling the prepolymer to 40 ℃, and adding a solvent to prepare a prepolymer solution with the mass concentration of 36%; (4) preparation of polyurethane urea: dissolving a chain extender and a chain terminator into a solvent to form a reaction solution with the mass concentration of 7.2%, and adding the reaction solution into a prepolymer solution to carry out a chain extension reaction and a chain termination reaction to form a polyurethane urea solution; (5) preparation of spinning solution: adding the functional jade powder slurry into a polyurethane urea solution, uniformly mixing under the condition of stirring, and then curing, defoaming and filtering to obtain a spinning solution; (6) preparing functional spandex: extruding, stretching and drying the spinning solution by adopting a dry spinning method to obtain functional spandex; the mass concentration of the functional jade powder slurry is 40%; the weight ratio of the jade powder to the auxiliary agent is 26:1; the molar ratio of isocyanate to oligomeric diol is 1.68:1; the weight ratio of the chain extender to the chain terminator is 14:1; (moles of hydroxyl groups in the chain extender + moles of amine groups in the chain terminator): mole number of isocyanate groups in prepolymer solution =1:1; the functional jade powder accounts for 3% of the weight of the functional spandex;
the preparation method of the functional jade powder comprises the following steps: mixing jade powder, mica powder, zinc oxide whisker and absolute ethyl alcohol, adjusting the pH value of a reaction system to 3 by formic acid, mixing and stirring at 50 ℃ for 2h, adding a coupling agent, and reacting for 1h to obtain functional jade powder; the weight ratio of the jade powder, the mica powder and the zinc oxide whisker is 20:5:1; the weight of the coupling agent is 1.2 percent of the total weight of the jade powder, the mica powder and the zinc oxide crystal whisker; the coupling agent is a silane coupling agent KH560; the average grain diameter of the jade powder is 325 meshes; the average particle size of the mica powder is 300 meshes; the diameter of the zinc oxide whisker is 1um, and the length of the zinc oxide whisker is 40um;
the isocyanate is diphenylmethane-4, 4' -diisocyanate (CAS number: 101-68-8);
the oligomer dihydric alcohol is polytetrahydrofuran ether glycol; the number average molecular weight of the polytetrahydrofuran ether glycol is 2000;
the chain extender is an alcohol chain extender; the alcohol chain extender is a composition of 2, 4-tetramethyl-1, 3-cyclobutanediol and neopentyl glycol, wherein the weight ratio of the 2, 4-tetramethyl-1, 3-cyclobutanediol to the neopentyl glycol is 5.6:1;
the chain terminator is diethylamine;
the solvent is N, N-dimethylacetamide;
the auxiliary agent is a composition of a lubricant, an antioxidant and a flatting agent, and the weight ratio of the auxiliary agent to the composition is 1:1.2:1; the lubricant is magnesium stearate (CAS number: 557-04-0); the antioxidant is antioxidant 1790; the flatting agent is titanium dioxide;
the first component of warp yarns are formed by blending functional spandex, cotton fibers and bamboo fibers; the functional spandex in the first component warp accounts for 15% by mass; the bamboo fibers in the first component warp accounts for 10% by mass; the mass percentage of the cotton fibers in the first component warp yarn is 75%;
the second component of warp yarn is yarn blended by cotton fiber and functional spandex; the functional spandex in the second component of warp accounts for 20% by mass; the spandex of the cotton fiber in the second component warp yarn accounts for 80% by mass;
the spandex core-spun yarn is a blended yarn which takes functional spandex as a core yarn and is externally coated with cotton fiber and bamboo fiber, wherein the weight ratio of the cotton fiber to the bamboo fiber blended yarn is 70:30; the cladding degree of the spandex-covered core yarn is 1000 circles/m;
the preparation method of the cool elastic jean fabric comprises the following preparation steps: s1: and (3) enabling the first component warp yarns and the second component warp yarns to be distributed in a number of 1: arranging at a ratio of 1 to obtain warp yarns; s2: weaving warps subjected to the combined process of spooling, warping and sizing and the spooled wefts on a machine, and then carrying out after-finishing to obtain the cool elastic jean fabric; the process flow of the after-finishing is as follows: grey cloth seam turning → singeing → desizing → stentering → preshrinking and shaping → jean fabric; step S2, warp and weft yarn density before weaving on the machine: 426X 234 (root/10 cm); the fabric weave structure of the cool elastic jean fabric adopts two-upper-lower-left twill.
The zinc oxide crystal whisker is purchased from Hangzhou Jikang New materials Co., ltd; the jade powder is purchased from processing factories of mineral products for carrying in Lingshou county; the mica powder is purchased from a processing plant for the mineral products transported in Lingshou county; the polytetrahydrofuran ether glycol is Korean PTG-PTMEG2000; the bamboo fiber was purchased from Shandong Xuzheng textile Co., ltd; the cotton fibers were purchased from sky rainbow textile, inc.
Example 2
The embodiment 2 of the invention provides a cool elastic jean fabric, which is formed by interweaving warp yarns and weft yarns, wherein the warp yarns consist of first component warp yarns and second component warp yarns, and the first component warp yarns are yarns formed by blending functional spandex, cotton fibers and bamboo fibers; the second component warp yarn is a yarn formed by blending cotton fibers and functional spandex; the weft yarns are formed by wrapping functional spandex core-spun yarns by blended yarns of cotton fibers and bamboo fibers; the preparation raw materials of the functional spandex comprise functional jade powder, isocyanate, oligomer dihydric alcohol, a chain extender, a solvent, a chain terminator and an auxiliary agent;
the preparation method of the functional spandex comprises the following steps: weighing raw materials: weighing corresponding parts by weight of functional jade powder, isocyanate, oligomer dihydric alcohol, a chain extender, an auxiliary agent, a solvent and a chain terminator for later use; (2) preparing functional jade powder slurry: circularly grinding the functional jade powder, the auxiliary agent and the solvent in a grinding machine for 40 hours to obtain dispersed functional jade powder slurry; (3) preparation of prepolymer solution: stirring and mixing isocyanate and oligomer dihydric alcohol, and reacting at 80 ℃ for 1h to prepare a prepolymer; cooling the prepolymer to 60 ℃, and adding a solvent to prepare a prepolymer solution with the mass concentration of 40%; (4) preparation of polyurethane urea: dissolving a chain extender and a chain terminator into a solvent to form a reaction solution with the mass concentration of 8%, and adding the reaction solution into a prepolymer solution to carry out chain extension reaction and chain termination reaction to form a polyurethane urea solution; (5) preparation of spinning solution: adding the functional jade powder slurry into a polyurethane urea solution, uniformly mixing under the condition of stirring, and then curing, defoaming and filtering to obtain a spinning solution; (6) preparation of functional spandex: extruding, stretching and drying the spinning solution by adopting a dry spinning method to obtain functional spandex; the mass concentration of the functional jade powder slurry is 50%; the weight ratio of the jade powder to the auxiliary agent is 30:1; the molar ratio of isocyanate to oligomeric diol is 1.68:1; the weight ratio of the chain extender to the chain terminator is 15:1; (moles of hydroxyl groups in the chain extender + moles of amine groups in the chain terminator): moles of isocyanate groups in the prepolymer solution =1.05:1; the functional jade powder accounts for 3% of the weight of the functional spandex;
the preparation method of the functional jade powder comprises the following steps: mixing jade powder, mica powder, zinc oxide whisker and absolute ethyl alcohol, adjusting the pH value of a reaction system to be 5 by formic acid, mixing and stirring at 70 ℃ for 1h, adding a coupling agent, and reacting for 2h to obtain functional jade powder; the weight ratio of the jade powder, the mica powder and the zinc oxide crystal whisker is 25:8:1; the weight of the coupling agent is 2 percent of the total weight of the jade powder, the mica powder and the zinc oxide crystal whisker; the coupling agent is a silane coupling agent KH560; the average grain diameter of the jade powder is 325 meshes; the average particle size of the mica powder is 300 meshes; the zinc oxide whisker has the diameter of 2um and the length of 50um;
the isocyanate is diphenylmethane-4, 4' -diisocyanate (CAS number: 101-68-8);
the oligomer dihydric alcohol is polytetrahydrofuran ether glycol; the number average molecular weight of the polytetrahydrofuran ether glycol is 2000;
the chain extender is an alcohol chain extender; the alcohol chain extender is a composition of 2, 4-tetramethyl-1, 3-cyclobutanediol and neopentyl glycol, wherein the weight ratio of the 2, 4-tetramethyl-1, 3-cyclobutanediol to the neopentyl glycol is 8:1;
the chain terminator is diethylamine;
the solvent is N, N-dimethylacetamide;
the auxiliary agent is a composition of a lubricant, an antioxidant and a flatting agent, and the weight ratio of the auxiliary agent to the flatting agent is 1.5:1.8:1; the lubricant is magnesium stearate (CAS number: 557-04-0); the antioxidant is antioxidant 1790; the flatting agent is titanium dioxide;
the first component of warp yarns are formed by blending functional spandex, cotton fibers and bamboo fibers; the mass percentage of the functional spandex in the first component warp is 25%; the bamboo fibers in the first component warp accounts for 5% by mass; the mass percentage of the cotton fibers in the first component warp yarn is 70%;
the second component of warp yarns are yarns formed by blending cotton fibers and functional spandex; the functional spandex in the second component of warp accounts for 30% by mass; the spandex of the cotton fiber in the second component warp yarn accounts for 70% by mass;
the spandex core-spun yarn is blended yarn which takes functional spandex as core yarn and is externally coated with cotton fiber and bamboo fiber, wherein the weight ratio of the cotton fiber to the bamboo fiber is 80:20; the cladding degree of the spandex-covered core yarn is 1300 circles/m;
the preparation method of the cool elastic jean fabric comprises the following preparation steps: s1: and (3) enabling the first component warp yarns and the second component warp yarns to be distributed in a number of 1: arranging at a ratio of 1 to obtain warp yarns; s2: weaving warps subjected to the combined process of spooling, warping and sizing and the spooled wefts on a machine, and then carrying out after-finishing to obtain the cool elastic jean fabric; the process flow of the after-finishing is as follows: grey cloth seam turning → singeing → desizing → stentering → preshrinking and shaping → jean fabric; step S2, warp and weft yarn density before weaving on the machine: 426X 234 (root/10 cm); the fabric weave structure of the cool elastic jean fabric adopts two-upper-lower-left twill.
The zinc oxide whisker is purchased from Hangzhou Jikang New materials Co., ltd; the jade powder is purchased from a processing plant for the mineral products in Lingshu county; the mica powder is purchased from a processing plant for the mineral products transported in Lingshou county; the polytetrahydrofuran ether glycol is Korean PTG-PTMEG2000; the bamboo fiber was purchased from Shandong Xuzheng textile Co., ltd; the cotton fibers were purchased from sky rainbow textile, inc.
Example 3
The embodiment 3 of the invention provides a cool elastic jean fabric, which is formed by interweaving warp yarns and weft yarns, wherein the warp yarns consist of first component warp yarns and second component warp yarns, and the first component warp yarns are yarns formed by blending functional spandex, cotton fibers and bamboo fibers; the second component warp yarn is a yarn formed by blending cotton fibers and functional spandex; the weft yarns are formed by wrapping functional spandex core-spun yarns by blended yarns of cotton fibers and bamboo fibers; the preparation raw materials of the functional spandex comprise functional jade powder, isocyanate, oligomer dihydric alcohol, a chain extender, a solvent, a chain terminator and an auxiliary agent;
the preparation method of the functional spandex comprises the following steps: weighing raw materials: weighing corresponding parts by weight of functional jade powder, isocyanate, oligomer dihydric alcohol, a chain extender, an auxiliary agent, a solvent and a chain terminator for later use; (2) preparing functional jade powder slurry: circularly grinding the functional jade powder, the auxiliary agent and the solvent in a grinding machine for 35 hours to obtain dispersed functional jade powder slurry; (3) preparation of prepolymer solution: stirring and mixing isocyanate and oligomer dihydric alcohol, and reacting at 75 ℃ for 1.5h to prepare a prepolymer; cooling the prepolymer to 45 ℃, and adding a solvent to prepare a prepolymer solution with the mass concentration of 38%; (4) preparation of polyurethane urea: dissolving a chain extender and a chain terminator into a solvent to form a reaction solution with the mass concentration of 7.6%, and adding the reaction solution into a prepolymer solution to carry out a chain extension reaction and a chain termination reaction to form a polyurethane urea solution; (5) preparing a spinning solution: adding the functional jade powder slurry into a polyurethane urea solution, uniformly mixing under the condition of stirring, and then curing, defoaming and filtering to obtain a spinning solution; (6) preparing functional spandex: extruding, stretching and drying the spinning solution by adopting a dry spinning method to obtain functional spandex; the mass concentration of the functional jade powder slurry is 45%; the weight ratio of the jade powder to the auxiliary agent is 27:1; the molar ratio of isocyanate to oligomeric diol is 1.68:1; the weight ratio of the chain extender to the chain terminator is 14.6:1; (moles of hydroxyl groups in the chain extender + moles of amine groups in the chain terminator): mole number of isocyanate groups in the prepolymer solution =1.02:1; the functional jade powder accounts for 3% of the weight of the functional spandex;
the preparation method of the functional jade powder comprises the following steps: mixing jade powder, mica powder, zinc oxide whisker and absolute ethyl alcohol, adjusting the pH value of a reaction system to 4 by formic acid, mixing and stirring at 60 ℃ for 1.5h, adding a coupling agent, and reacting for 1.5h to obtain functional jade powder; the weight ratio of the jade powder, the mica powder and the zinc oxide whisker is 23:6.8:1; the weight of the coupling agent is 1.5 percent of the total weight of the jade powder, the mica powder and the zinc oxide crystal whisker; the coupling agent is a silane coupling agent KH560; the average grain diameter of the jade powder is 325 meshes; the average particle size of the mica powder is 300 meshes; the diameter of the zinc oxide whisker is 1.6um, and the length of the zinc oxide whisker is 45um;
the isocyanate is diphenylmethane-4, 4' -diisocyanate (CAS number: 101-68-8);
the oligomer dihydric alcohol is polytetrahydrofuran ether glycol; the number average molecular weight of the polytetrahydrofuran ether glycol is 2000;
the chain extender is an alcohol chain extender; the alcohol chain extender is a composition of 2, 4-tetramethyl-1, 3-cyclobutanediol and neopentyl glycol; the weight ratio of the 2, 4-tetramethyl-1, 3-cyclobutanediol to the neopentyl glycol is 6.8:1;
the chain terminator is diethylamine;
the solvent is N, N-dimethylacetamide;
the auxiliary agent is a composition of a lubricant, an antioxidant and a flatting agent, and the weight ratio of the auxiliary agent to the flatting agent is 1.2:1.5:1; the lubricant is magnesium stearate (CAS number: 557-04-0); the antioxidant is antioxidant 1790; the flatting agent is titanium dioxide;
the first component of warp yarns are formed by blending functional spandex, cotton fibers and bamboo fibers; the functional spandex in the first component warp accounts for 20% by mass; the bamboo fibers in the first component warp accounts for 8% by mass; the mass percentage of the cotton fibers in the first component warp yarn is 72%;
the second component of warp yarn is yarn blended by cotton fiber and functional spandex; the functional spandex in the second component of warp yarn accounts for 25% by mass; the spandex of the cotton fiber in the second component warp yarn accounts for 75% by mass;
the spandex core-spun yarn is a blended yarn which takes functional spandex as a core yarn and is externally coated with cotton fiber and bamboo fiber, wherein the weight ratio of the cotton fiber to the bamboo fiber blended yarn is 75:25; the cladding degree of the spandex core-spun yarn is 1200 circles/m;
the preparation method of the cool elastic jean fabric comprises the following preparation steps: s1: and (3) enabling the first component warp yarns and the second component warp yarns to be distributed in a number of 1: arranging at a ratio of 1 to obtain warp yarns; s2: weaving warps subjected to the combined process of spooling, warping and sizing and the spooled wefts on a machine, and then carrying out after-treatment to obtain the cool elastic denim fabric; the process flow of the after-finishing is as follows: grey cloth seam turning → singeing → desizing → tentering → preshrinking and sizing → jean fabric; step S2, density of warp and weft yarns before weaving on the machine: 426X 234 (root/10 cm); the fabric weave structure of the cool elastic jean fabric adopts two-upper-lower-left twill.
The zinc oxide whisker is purchased from Hangzhou Jikang New materials Co., ltd; the jade powder is purchased from a processing plant for the mineral products in Lingshu county; the mica powder is purchased from a processing plant for the mineral products transported in Lingshou county; the polytetrahydrofuran ether glycol is Korean PTG-PTMEG2000; the bamboo fiber was purchased from Shandong Xuzheng textile Co Ltd; the cotton fibers were purchased from sky iris textile, ltd.
Example 4
Embodiment 4 of the invention provides a cool elastic jean fabric, which is the same as embodiment 3 in the specific implementation manner, and is different in that the coverage of the spandex core-spun yarn is 500 circles/m.
Example 5
Embodiment 5 of the present invention provides a cool elastic jean fabric, which is similar to embodiment 3 in specific implementation manner, except that the spandex core-spun yarn has a covering degree of 2000 loops/m.
Example 6
Example 6 of the present invention provides a cool elastic jean fabric, which is similar to example 3 in specific implementation manner, except that neopentyl glycol is not present.
Example 7
Embodiment 7 of the present invention provides a cool elastic denim fabric, which is the same as embodiment 3 in specific implementation manner, and is different from embodiment 3 in that the weight ratio of 2, 4-tetramethyl-1, 3-cyclobutanediol to neopentyl glycol is 3:1.
example 8
Embodiment 8 of the present invention provides a cool elastic denim fabric, which is the same as embodiment 3 in specific implementation manner, and is different from embodiment 3 in that the weight ratio of 2, 4-tetramethyl-1, 3-cyclobutanediol to neopentyl glycol is 10:1.
example 9
Embodiment 9 of the invention provides a cool elastic jean fabric, which is the same as embodiment 3 in the specific implementation mode, but is free of mica powder.
Example 10
Example 10 of the present invention provides a cool elastic jean fabric, which is similar to example 3 in the specific implementation manner, but does not contain zinc oxide whiskers.
Example 11
Embodiment 11 of the present invention provides a cool elastic jean fabric, which is similar to embodiment 3 in the specific implementation manner, and is different in that the zinc oxide whiskers are 1.5um in diameter and 20um in length.
Performance testing
1. Instantaneous cool feeling by contact
Respectively testing the contact instant cool feeling of the jean fabric in some embodiments according to the standard GB/T35263-2017; evaluation criterion, cool feeling at the moment of contact is 0.24J/(cm) 2 S) is A; the contact instant cooling feeling is more than or equal to 0.15J/(cm 2 S), less than 0.24J/(cm) 2 S) is B, and the cooling sensation at the moment of contact is less than 0.15J/(cm) 2 S) is C.
2. Elastic recovery rate and weft shrinkage
The elastic recovery rate of the jean fabric in the examples of the part is tested according to FZ/T70006-2004 test method for tensile elastic recovery rate of knitted fabric;
the examples were washed according to AATCC135 "determination of dimensional change of fabrics after home laundering" to test the shrinkage in the fill direction.
3. Air permeability
The jean fabric in some embodiments is used respectively, one sweater is prepared according to the same method, 20 people are selected to wear the sweater for sports, the air permeability of the sweater is evaluated and scored, the average score is taken, the full score is 100, and the higher the score is, the better the transparency is.
The test results are shown in table 1:
TABLE 1
The foregoing examples are merely illustrative and serve to explain some of the features of the method of the present invention. The appended claims are intended to claim as broad a scope as can be conceived and the examples presented herein are merely illustrative of selected implementations in accordance with all possible combinations of examples. Accordingly, it is applicants' intention that the appended claims are not to be limited by the choice of examples illustrating features of the invention. Also, where numerical ranges are used in the claims, subranges therein are included, and variations in these ranges are also to be construed as possible being covered by the appended claims.
Claims (3)
1. The preparation method of the cool elastic jean fabric is characterized in that the warp yarns consist of first component warp yarns and second component warp yarns, and the first component warp yarns are yarns formed by blending functional spandex, cotton fibers and bamboo fibers; the second component of warp yarn is yarn blended by cotton fiber and functional spandex; the weft yarn is spandex core-spun yarn; the spandex core-spun yarn takes functional spandex as a core yarn, and is coated with blended yarn of cotton fiber and bamboo fiber;
the preparation raw materials of the functional spandex comprise functional jade powder, isocyanate, oligomer dihydric alcohol, a chain extender, a solvent, a chain terminator and an auxiliary agent;
the preparation method of the functional jade powder comprises the following steps: mixing jade powder, mica powder, zinc oxide whisker and absolute ethyl alcohol, adjusting the pH value of a reaction system to 3-5 by formic acid, mixing and stirring at 50-70 ℃ for 1-2h, adding a coupling agent, and reacting for 1-2h to obtain functional jade powder;
the weight ratio of the jade powder, the mica powder and the zinc oxide whisker is 23:6.8:1; the average grain diameter of the jade powder is 325 meshes; the average particle size of the mica powder is 300 meshes; the diameter of the zinc oxide whisker is 1.6um, and the length of the zinc oxide whisker is 45um;
the chain extender is a composition of 2, 4-tetramethyl-1, 3-cyclobutanediol and neopentyl glycol, and the weight ratio is 6.8:1;
the cladding degree of the spandex core-spun yarn is 900-1500 circles/m;
the preparation method of the functional spandex comprises the following steps:
(1) Weighing raw materials: weighing corresponding parts by weight of functional jade powder, isocyanate, oligomer dihydric alcohol, a chain extender, an auxiliary agent, a solvent and a chain terminator for later use;
(2) Preparing functional jade powder slurry: circularly grinding the functional jade powder, the auxiliary agent and the solvent in a grinding machine for 30-40h to obtain dispersed functional jade powder slurry;
(3) Preparation of prepolymer solution: stirring and mixing isocyanate and oligomer dihydric alcohol, and reacting at 70-80 ℃ for 1-2h to prepare a prepolymer; cooling the prepolymer to 40-60 ℃, and adding a solvent to prepare a prepolymer solution with the mass concentration of 36-40%;
(4) Preparation of polyurethane urea: dissolving a chain extender and a chain terminator in a solvent to form a reaction solution with the mass concentration of 7.2-8%, and adding the reaction solution into a prepolymer solution to carry out a chain extension reaction and a chain termination reaction to form a polyurethane urea solution;
(5) Preparing a spinning solution: adding the functional jade powder slurry into a polyurethane urea solution, uniformly mixing under the condition of stirring, and then curing, defoaming and filtering to obtain a spinning solution;
(6) Preparation of functional spandex: and extruding, stretching and drying the spinning solution by adopting a dry spinning method to obtain the functional spandex.
2. The preparation method of the cool elastic jean fabric according to claim 1, which is characterized by comprising the following preparation steps:
s1: and (3) enabling the first component warp yarns and the second component warp yarns to be distributed in a number of 1: arranging at a ratio of 1 to obtain warp yarns;
s2: and weaving the warps subjected to the combined process of spooling, warping and sizing and the spooled wefts on a machine, and then carrying out after-treatment to obtain the cool elastic jean fabric.
3. The method for preparing the cool elastic jean fabric according to claim 2, wherein the fabric weave structure of the cool elastic jean fabric is two-upper-lower-left twill.
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