CN118127698B - Ammonia fabric with good air permeability and moisture removal performance and preparation method thereof - Google Patents
Ammonia fabric with good air permeability and moisture removal performance and preparation method thereof Download PDFInfo
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- CN118127698B CN118127698B CN202410551716.4A CN202410551716A CN118127698B CN 118127698 B CN118127698 B CN 118127698B CN 202410551716 A CN202410551716 A CN 202410551716A CN 118127698 B CN118127698 B CN 118127698B
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- 239000004744 fabric Substances 0.000 title claims abstract description 164
- 230000035699 permeability Effects 0.000 title claims abstract description 77
- 238000002360 preparation method Methods 0.000 title claims abstract description 54
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title description 4
- 229910021529 ammonia Inorganic materials 0.000 title description 2
- 229920002334 Spandex Polymers 0.000 claims abstract description 109
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- 239000002131 composite material Substances 0.000 claims abstract description 96
- 239000004677 Nylon Substances 0.000 claims abstract description 93
- 229920001778 nylon Polymers 0.000 claims abstract description 93
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- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 42
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 42
- 241001330002 Bambuseae Species 0.000 claims abstract description 42
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- 239000011425 bamboo Substances 0.000 claims abstract description 42
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
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- 238000002156 mixing Methods 0.000 claims description 22
- 238000004513 sizing Methods 0.000 claims description 22
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 21
- 239000000243 solution Substances 0.000 claims description 21
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 238000002791 soaking Methods 0.000 claims description 13
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 12
- 239000008367 deionised water Substances 0.000 claims description 10
- 229910021641 deionized water Inorganic materials 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 238000007493 shaping process Methods 0.000 claims description 8
- 230000002940 repellent Effects 0.000 claims description 7
- 239000005871 repellent Substances 0.000 claims description 7
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 7
- 229960000583 acetic acid Drugs 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 238000000578 dry spinning Methods 0.000 claims description 6
- 239000012362 glacial acetic acid Substances 0.000 claims description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 5
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 5
- 229920002678 cellulose Polymers 0.000 claims description 5
- 239000001913 cellulose Substances 0.000 claims description 5
- 229920000570 polyether Polymers 0.000 claims description 5
- 238000009210 therapy by ultrasound Methods 0.000 claims description 5
- JVYDLYGCSIHCMR-UHFFFAOYSA-N 2,2-bis(hydroxymethyl)butanoic acid Chemical compound CCC(CO)(CO)C(O)=O JVYDLYGCSIHCMR-UHFFFAOYSA-N 0.000 claims description 4
- 102000004190 Enzymes Human genes 0.000 claims description 4
- 108090000790 Enzymes Proteins 0.000 claims description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 4
- 239000002202 Polyethylene glycol Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 229920001223 polyethylene glycol Polymers 0.000 claims description 4
- PTBDIHRZYDMNKB-UHFFFAOYSA-N 2,2-Bis(hydroxymethyl)propionic acid Chemical compound OCC(C)(CO)C(O)=O PTBDIHRZYDMNKB-UHFFFAOYSA-N 0.000 claims description 3
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims description 3
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 3
- 229920000909 polytetrahydrofuran Polymers 0.000 claims description 3
- KCLIFOXATBWLMW-UHFFFAOYSA-M sodium;ethane-1,2-diamine;ethanesulfonate Chemical compound [Na+].NCCN.CCS([O-])(=O)=O KCLIFOXATBWLMW-UHFFFAOYSA-M 0.000 claims description 3
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 3
- 239000005058 Isophorone diisocyanate Substances 0.000 claims description 2
- 239000004902 Softening Agent Substances 0.000 claims description 2
- 239000012298 atmosphere Substances 0.000 claims description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims description 2
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 claims description 2
- 229920000223 polyglycerol Polymers 0.000 claims description 2
- 229920001451 polypropylene glycol Polymers 0.000 claims description 2
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- GUBGYTABKSRVRQ-QRZGKKJRSA-N beta-cellobiose Chemical compound OC[C@H]1O[C@@H](O[C@H]2[C@H](O)[C@@H](O)[C@H](O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@@H]1O GUBGYTABKSRVRQ-QRZGKKJRSA-N 0.000 description 6
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- 238000007791 dehumidification Methods 0.000 description 1
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- STVZJERGLQHEKB-UHFFFAOYSA-N ethylene glycol dimethacrylate Chemical compound CC(=C)C(=O)OCCOC(=O)C(C)=C STVZJERGLQHEKB-UHFFFAOYSA-N 0.000 description 1
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Abstract
The application relates to the technical field of textile, and particularly discloses a nylon fabric with good air permeability and moisture removal performance and a preparation method thereof. A nylon polyurethane fabric with good air permeability and moisture removal performance comprises composite spandex and nylon; the composite spandex comprises, by weight, 45-50 parts of macromolecular polyol, 12-18 parts of polyisocyanate, 2-6 parts of hydrophilic molecular chain extender and 12-24 parts of bamboo pulp fiber; the preparation method comprises the following steps: and (3) taking the composite spandex as a core yarn, taking nylon as an outer envelope yarn, twisting the two yarns according to the strand number ratio of 1 (1) to 3, performing ring spinning to obtain blended yarns, taking the blended yarns as warp and weft yarns, and performing weaving, dyeing and high-temperature blank customizing to obtain the composite spandex-nylon composite yarn. The nylon fabric prepared by the preparation method of the nylon fabric with good air permeability and moisture removal performance has excellent air permeability and moisture removal performance, can timely discharge sweat of a human body, and improves wearing comfort.
Description
Technical Field
The application relates to the technical field of textile, in particular to a nylon fabric with good air permeability and moisture removal and a preparation method thereof.
Background
The polyurethane fiber is also called polyurethane fiber, is fiber prepared by spinning polyurethane segmented copolymer, has the elongation at break of up to 800 percent and elastic recovery rate of higher than 90 percent, has the advantages of high breaking strength and low elastic modulus, and is widely applied to the field of clothing manufacture because the polyurethane fiber has high elongation at break which is incomparable with other fibers. Because of the excellent elasticity, the spandex fiber is compatible with cotton, terylene, nylon, silk and other yarns to weave the fabric, so that the fabric has soft hand feeling, good rebound resilience and comfortable wearing.
However, in view of the above related art, the inventor found that since the spandex fiber is an elastic synthetic fiber, the molecular structure thereof is compact, and there is a lack of sufficient gaps between the fibers, the compact structure limits the fluidity of gas and liquid, so that the fabric containing spandex is generally poor in ventilation and moisture removal, and the wearing comfort is reduced, especially in the field of manufacturing of sports apparel, not only is the fabric required to have excellent elasticity, but also excellent ventilation and moisture removal performance is required, so that sweat can be discharged in time, and the stuffy feeling is reduced.
Disclosure of Invention
In order to improve the air permeability and the moisture removing performance of the spandex-containing fabric and improve the wearing comfort, the application provides the nylon-spandex fabric with good air permeability and moisture removing performance and a preparation method thereof.
In a first aspect, the application provides a nylon fabric with good air permeability and moisture removal, which adopts the following technical scheme:
A nylon polyurethane fabric with good air permeability and moisture removal performance comprises composite spandex and nylon; the composite spandex comprises, by weight, 45-50 parts of macromolecular polyol, 12-18 parts of polyisocyanate, 2-6 parts of hydrophilic molecular chain extender and 12-24 parts of bamboo pulp fiber.
By adopting the technical scheme, the polyurethane prepolymer prepared by proportioning the macromolecular polyol and the polyisocyanate has excellent elasticity and strength, hydrophilic groups can be introduced into the molecular chain of the polyurethane prepolymer by adding the hydrophilic molecular chain extender, so that the polyurethane prepolymer has hydrophilic performance, the fabric prepared subsequently can have water absorption, and sweat can be absorbed rapidly; the composite spandex is prepared by adding the bamboo pulp fiber and polyurethane prepolymer for spinning, so that the composite spandex is fused with the air permeability and the hygroscopicity of the bamboo pulp fiber, and the fabric prepared from the composite spandex is rich in natural fiber comfort, so that the air permeability and the moisture permeability of the fabric prepared from the traditional spandex can be remarkably improved, sweat can be timely discharged, and the wearing comfort is improved; the nylon has high strength, wear resistance and excellent air permeability and moisture removal performance, and has good wear resistance with the nylon fabric prepared by blending the composite spandex, so that the moisture of the prepared fabric can be effectively discharged to keep the inside of the fabric dry, and the wearing comfort is improved.
Optionally, the preparation method of the composite spandex comprises the following steps: mixing macromolecular polyol and polyisocyanate, heating and stirring under the inert gas atmosphere of 80-100 ℃, cooling to 60-70 ℃, adding a hydrophilic molecular chain extender, continuously stirring, adding triethylamine, and continuously stirring to obtain polyurethane stock solution, wherein the mass of the triethylamine is 58-64% of that of the hydrophilic molecular chain extender; pouring the polyurethane stock solution into deionized water and stirring to obtain polyurethane prepolymer; adding bamboo pulp fibers into the polyurethane prepolymer, mixing and stirring to obtain a composite spandex stock solution; and curing the composite spandex stock solution, and obtaining the composite spandex through dry spinning after curing.
By adopting the technical scheme, the carboxyl in the hydrophilic chain extender can be neutralized by adding the triethylamine, so that the carboxyl originally carrying negative charges is converted into an uncharged carboxylate form, the carboxyl is better dispersed and dissolved in water, and the composite spandex has stronger water solubility; the bamboo pulp fiber is one of bamboo fibers, the bamboo fiber is taken as one of natural fibers, has good hygroscopicity and air permeability, has a smaller diameter and is standard in shape, and the bamboo fiber is introduced into the preparation process of the polyurethane prepolymer to be blended with the polyurethane prepolymer to prepare the composite spandex, so that the composite spandex has more gaps, and is beneficial to improving the air permeability and moisture removal of the fabric prepared subsequently; compared with other types of bamboo fibers, the bamboo pulp fiber has better elasticity and rebound resilience and higher strength, which is helpful for keeping the excellent elasticity of the composite spandex and improving the comprehensive performance of the composite spandex.
Optionally, the following pretreatment is performed before the composite spandex stock solution is cured: 3-5 parts of nano TiO 2 and 0.4-0.6 part of ethanol are added into the composite spandex stock solution by weight, and ultrasonic stirring is carried out for 5-10min.
By adopting the technical scheme, as the nano TiO 2 has extremely small particle size and extremely large specific surface area, the nano TiO 2 can be uniformly dispersed in the composite spandex stock solution by ultrasonic stirring treatment, and the interaction between the nano TiO 2 and the composite spandex molecules can be fully carried out, so that the flow property of the composite spandex stock solution can be changed by the intermolecular interaction, the composite spandex fiber is more uniformly formed in the subsequent curing spinning process, the diameter is reduced, the reduced fiber diameter means that the gaps among the fibers are smaller, the prepared fabric is internally provided with larger void ratio and specific surface area, the adsorption and release capacity of the fiber to moisture are enhanced, the fabric is kept dry and comfortable in a wet environment, and the wearing experience is improved.
Optionally, the bamboo pulp fibers are subjected to the following pretreatment prior to addition to the polyurethane prepolymer: adding bamboo pulp fiber and formaldehyde with the mass ratio of (8-10) being 1 into NaClO solution, and carrying out ultrasonic treatment for 1-1.5h.
By adopting the technical scheme, the bamboo pulp fiber and formaldehyde react under the oxidation action of NaClO to introduce aldehyde groups for the bamboo pulp fiber, and the aldehyde groups are hydrophilic groups, so that the water solubility of the bamboo pulp fiber can be further improved, and the moisture removal performance of the prepared fabric is promoted; the introduction of aldehyde groups enables the bamboo pulp fiber to have more chemical reaction sites, so that the reactivity between the bamboo pulp fiber molecules and polyurethane prepolymer molecules is enhanced, the bamboo pulp fiber and polyurethane can be combined more tightly in the spinning process, the strength performance of the yarn is improved, and in the subsequent dyeing process, the aldehyde groups can be combined with dye molecules to form a more stable dye structure, so that the color fastness of the fabric is improved.
Optionally, the macromolecular polyol is a polyether polyol selected from any one of polytetrahydrofuran glycol, polyethylene glycol, polypropylene glycol, polyglycerol ether and polyether alcohol.
By adopting the technical scheme, because the cohesive energy of ether bonds in polyether polyol molecules is lower, the molecules are easier to move and rotate, the flexibility is beneficial to reducing intermolecular interaction force inside the fabric, reducing the surface tension of the fabric, and the surface of the fabric is easier to be wetted and penetrated by gas, so that the ventilation and moisture removal performance of the fabric is enhanced.
Alternatively, the polyisocyanate is selected from any one of isophorone diisocyanate, toluene diisocyanate, 1, 6-hexyl diisocyanate, and diphenylmethane diisocyanate.
By adopting the technical scheme, the polyisocyanate is used as an important monomer in the preparation process of the polyurethane prepolymer, has higher elasticity and softness, can provide enough mechanical properties for the composite spandex, and is beneficial to preparing the high-elasticity composite spandex.
Optionally, the hydrophilic molecular chain extender is selected from any one of dimethylolpropionic acid, dimethylolbutyric acid, sodium ethylenediamine ethanesulfonate and triethanolamine.
By adopting the technical scheme, the molecules of the dimethylolpropionic acid, the dimethylolbutyric acid, the sodium ethylenediamine ethanesulfonate and the triethanolamine all contain a certain amount of hydrophilic groups such as carboxyl groups, sulfonic groups and the like, have stronger hydrophilicity, and can be introduced onto a molecular main chain as a hydrophilic chain extender through a synthesis reaction, so that polyurethane molecules have certain hydrophilicity, and the air permeability and the moisture removal performance of the subsequently prepared fabric are enhanced.
In a second aspect, the application provides a preparation method of a nylon fabric with good air permeability and moisture removal, which adopts the following technical scheme:
A preparation method of a nylon fabric with good air permeability and moisture removal performance comprises the following steps: taking the composite spandex as a core yarn and taking nylon as an outer envelope yarn, twisting the two yarns according to the strand number ratio of 1 (2-3), and performing ring spinning to obtain a blended yarn; taking the blended yarn as warp and weft, and weaving according to the warp density of 565-635 yarns/10 cm and the weft density of 210-265 yarns/10 cm to obtain a primary fabric; dyeing the primary fabric, fully extruding, and performing blank sizing at 160-180 ℃ to obtain a blank sizing fabric; soaking and shaping the blank fabric in a shaping liquid, extruding and drying to obtain the nylon fabric with good air permeability and moisture removal performance, wherein the shaping liquid comprises a C6 water repellent agent, a hydrophilic softening agent, a penetrating agent and glacial acetic acid.
By adopting the technical scheme, the composite fiber is used as the core yarn, the nylon is used as the mixed yarn of the outer covered yarn and the core-spun structure, so that the subsequent weaving is facilitated to form the fabric structure with high specific surface area and multiple micro-pore structures, and the ventilation and moisture removal properties of the fabric are facilitated to be improved; the composite spandex and nylon are twisted according to the strand number ratio of 1 (2-3), so that the high elasticity of the mixed spandex, the high strength and the wear resistance of the nylon can be balanced; the blended yarn is dyed and then subjected to two-step shaping, the color of the primary-made cloth is pre-shaped through the height Wen Piding, the color fastness of the primary-made cloth is enhanced, and then the sizing liquid is used for shaping the blank-shaped fabric, so that the blank-shaped fabric fully absorbs the components of the sizing liquid, the color fastness, the softness and other comprehensive properties of the blank-shaped fabric are further improved, and the wearing comfort is improved.
Optionally, the primary fabric is subjected to the following pretreatment before being dyed: soaking the primary fabric cloth in a biological enzyme solution, and treating for 30-60min at 40-50 ℃, wherein the biological enzyme is cellulose.
Through adopting above-mentioned technical scheme, the plasmin can hydrolyze peptide bond and the crosslinked structure in the partial prefabricated surface fabric fibre molecule for fibrous structure becomes lax, produces more micropores, and these microporous structure help the passage of gas molecule to promote the gas permeability of prefabricated surface fabric, the prefabricated surface fabric has good hydrophilicity, promotes the discharge of steam under the effect of microporous structure, makes the prefabricated surface fabric have excellent ventilative wettability, has promoted the comfort level of wearing.
Optionally, the blended yarn is woven in twill or satin weave when weaving to prepare the primary fabric.
By adopting the technical scheme, the warp and weft interweaving points of the fabric woven in the twill and satin weaving mode are fewer than those of plain weave, and inclined long floating lines can be formed; in addition, the gaps among the fibers of the nylon fabric prepared by the twill and satin weaving mode are larger, so that the ventilation and moisture removal of the nylon fabric are facilitated, and the ventilation and moisture removal of the nylon fabric are enhanced.
In summary, the application has the following beneficial effects:
1. according to the application, the composite spandex is adopted to replace the traditional spandex, hydrophilic groups are introduced by adding the hydrophilic molecular chain extender in the preparation process of the composite spandex, so that the composite spandex has good hydrophilicity, sweat can be absorbed in time, and the composite spandex is fused with good ventilation and moisture removal properties of the bamboo pulp fibers by adding the bamboo pulp fibers, so that the ventilation and moisture removal properties of the traditional spandex are remarkably improved, and sweat absorption and removal are promoted.
2. According to the preparation method, the composite spandex is used as the core yarn, the nylon is used as the outer wrapping yarn to prepare the blended yarn as the warp and the weft, so that the warp and the weft have the core-wrapped structure, and the yarn with the structure has the high specific surface area and the multi-micro pore structure, so that the prepared nylon spandex fabric can quickly absorb sweat and provide more channels for the transmission of water molecules when being contacted with sweat, the ventilation and the dehumidification of the fabric are improved, and the wearing comfort is improved.
3. According to the composite spandex stock solution disclosed by the application, before curing, nano TiO 2 and ethanol are added for pretreatment, nano TiO 2 is uniformly dispersed in the composite spandex stock solution and fully interacts with the composite spandex stock solution, so that the fluidity of the composite spandex stock solution is changed, the composite spandex prepared by subsequent curing spinning has smaller fiber diameter, the inside of the subsequently prepared fabric has larger void ratio and specific surface area, the air permeability and the moisture removal performance of the prepared fabric can be obviously improved, and the wearing comfort level is improved.
Detailed Description
The following examples illustrate the application in further detail.
Preparation example of composite spandex
Preparation example 1: the raw materials of the composite spandex and the dosage of the raw materials are shown in the table 1, wherein the macromolecular polyol is polyethylene glycol which is selected from 5254-43-7 of Guangzhou Yixin chemical engineering Co., ltd; the polyisocyanate is toluene diisocyanate selected from Shanghai leaf Biotechnology company, T135411; the hydrophilic molecular chain extender is dimethylolbutyric acid, which is selected from Shanghai leaf Biotechnology company, B34379; triethylamine selected from Shanghai Seiyaka Biotechnology Co., ltd., T431604; the average diameter of the bamboo pulp fiber is 50 mu m, and the average length is 2mm; formaldehyde is selected from Shanghai Seiyaka Biotechnology Co., ltd., B20327; nano TiO 2 is selected from Nanjing Tian Xingzhi New material Co., ltd, R20C; the ethanol is absolute ethanol; the mass concentration of the NaClO solution is 40%.
TABLE 1
The preparation method of the composite spandex comprises the following steps:
S1, mixing macromolecular polyol and polyisocyanate, heating and stirring for 2 hours in an N 2 atmosphere at 80 ℃, cooling to 60 ℃, adding a hydrophilic molecular chain extender, continuously stirring for 1 hour, adding triethylamine, and stirring for 30 minutes to obtain polyurethane stock solution;
S2, pouring the polyurethane stock solution into 1.5L of deionized water, and stirring for 1h at the rotating speed of 8000rmp of a high-speed stirrer to obtain a polyurethane prepolymer;
S3, adding the bamboo pulp fiber and formaldehyde into 1L of deionized water, mixing and stirring uniformly, dropwise adding 600mL of NaClO solution, adjusting the pH of the system to 10, and performing ultrasonic treatment in a 1200W ultrasonic cell disruption instrument for 1h to obtain modified bamboo pulp fiber;
s4, adding the modified bamboo pulp fiber obtained in the step S3 into the polyurethane prepolymer obtained in the step S2, and mixing and stirring for 2 hours at the rotating speed of 1500rmp of a high-speed stirrer to obtain a composite spandex stock solution;
S5, adding nano TiO 2 and ethanol into the composite spandex stock solution, and carrying out ultrasonic stirring for 5min to obtain a pretreated composite spandex stock solution;
And S6, curing the pretreated composite spandex stock solution, and obtaining the composite spandex through dry spinning after curing.
Preparation example 2: the difference between the composite spandex and the preparation example 1 is that the raw materials and the amounts are shown in table 1, and the preparation method of the composite spandex comprises the following steps:
S1, mixing macromolecular polyol and polyisocyanate, heating and stirring for 2 hours in an N 2 atmosphere at 100 ℃, cooling to 70 ℃, adding a hydrophilic molecular chain extender, continuously stirring for 1 hour, adding triethylamine, and stirring for 30 minutes to obtain polyurethane stock solution;
S2, pouring the polyurethane stock solution into 1.5L of deionized water, and stirring for 1h at the rotating speed of 8000rmp of a high-speed stirrer to obtain a polyurethane prepolymer;
S3, adding the bamboo pulp fiber and formaldehyde into 1L of deionized water, mixing and stirring uniformly, dropwise adding 600mL of NaClO solution, adjusting the pH of the system to 10, and performing ultrasonic treatment in a 1200W ultrasonic cell disruption instrument for 1.5 hours to obtain modified bamboo pulp fiber;
s4, adding the modified bamboo pulp fiber obtained in the step S3 into the polyurethane prepolymer obtained in the step S2, and mixing and stirring for 2 hours at the rotating speed of 1500rmp of a high-speed stirrer to obtain a composite spandex stock solution;
S5, adding nano TiO 2 and ethanol into the composite spandex stock solution, and carrying out ultrasonic stirring for 5min to obtain a pretreated composite spandex stock solution;
And S6, curing the pretreated composite spandex stock solution, and obtaining the composite spandex through dry spinning after curing.
Preparation example 3: the difference between the composite spandex and the preparation example 1 is that the raw materials and the amounts are shown in table 1, and the preparation method of the composite spandex comprises the following steps:
S1, mixing macromolecular polyol and polyisocyanate, heating and stirring for 2 hours in an N 2 atmosphere at 90 ℃, cooling to 70 ℃, adding a hydrophilic molecular chain extender, continuously heating and stirring for 1 hour, adding triethylamine, and stirring for 30 minutes to obtain polyurethane stock solution;
S2, pouring the polyurethane stock solution into 1.5L of deionized water, and stirring for 1h at the rotating speed of 8000rmp of a high-speed stirrer to obtain a polyurethane prepolymer;
S3, adding the bamboo pulp fiber and formaldehyde into 1L of deionized water, uniformly mixing and stirring, dropwise adding 600mL of NaClO solution, adjusting the pH of the system to 10, performing ultrasonic treatment in a 1200W ultrasonic cell disruption instrument for 1h, and drying to obtain modified bamboo pulp fiber;
s4, adding the modified bamboo pulp fiber obtained in the step S3 into the polyurethane prepolymer obtained in the step S2, and mixing and stirring for 2 hours at the rotating speed of 1500rmp of a high-speed stirrer to obtain a composite spandex stock solution;
S5, adding nano TiO 2 and ethanol into the composite spandex stock solution, and carrying out ultrasonic stirring for 5min to obtain a pretreated composite spandex stock solution;
And S6, curing the pretreated composite spandex stock solution, and obtaining the composite spandex through dry spinning after curing.
Preparation example 4: the composite spandex is different from the preparation example 1 in that nano TiO 2 and ethanol are not added to pretreat the composite spandex stock solution, and other steps are the same as in the preparation example 1.
Preparation example 5: the composite spandex is different from the preparation example 1 in that the modification treatment of the step S3 is not performed on the bamboo pulp fiber, and the step S4 specifically includes: and (2) adding the bamboo pulp fibers into the polyurethane prepolymer obtained in the step (S2), mixing and stirring for 2 hours at the rotating speed of a high-speed stirrer 1500rmp to obtain a composite spandex stock solution, wherein other steps are the same as those of preparation example 1.
Preparation example 6: the difference between the composite spandex and the preparation example 1 is that the raw materials and the amounts are shown in table 1, and the preparation method of the composite spandex comprises the following steps:
S1, mixing macromolecular polyol and polyisocyanate, heating and stirring for 2 hours in an N 2 atmosphere at 80 ℃, cooling to 60 ℃, adding a hydrophilic molecular chain extender, continuously stirring for 1 hour, adding triethylamine, and stirring for 30 minutes to obtain polyurethane stock solution;
S2, pouring the polyurethane stock solution into 1.5L of deionized water, and stirring for 1h at the rotating speed of 8000rmp of a high-speed stirrer to obtain a polyurethane prepolymer;
s3, adding nano TiO 2 and ethanol into the polyurethane prepolymer, and carrying out ultrasonic stirring for 5min to obtain a pretreated spandex stock solution;
And S4, curing the pretreatment spandex stock solution, and performing dry spinning after curing to obtain the polyurethane fiber.
Preparation example 7: the composite spandex is different from the preparation example 1 in that no hydrophilic molecular chain extender and triethylamine are added, and the step S1 specifically comprises: the macromolecular polyol and the polyisocyanate were mixed, heated and stirred for 2 hours at 80℃under an N 2 atmosphere to obtain a polyurethane stock solution, and the other steps were the same as in preparation example 1.
Examples
Example 1: a nylon spandex fabric with good air permeability and moisture removal, wherein a composite spandex is prepared from a preparation example 1; nylon yarn with nylon of 70D/48F; the concentration of the cellose solution is 5g/L, and the cellose is selected from the WU Hua Xiangke Jiete biological technology Co., ltd., 9012-54-8; the C6 water repellent is selected from the Meta-Meta biological materials limited company, SK-600; the penetrating agent is selected from the chemical industry limited company, guangzhou Le Heng, JFC penetrating agent; the hydrophilic softener is selected from the textile auxiliary Co.Ltd, SY-700.
The preparation method of the nylon fabric with good air permeability and moisture removal performance comprises the following steps:
s1, taking composite spandex as a core yarn and nylon as an outer envelope yarn, twisting the core yarn and the nylon according to a strand number ratio of 1:2, and performing ring spinning to obtain a blended yarn;
S2, taking the blended yarns as warps and wefts, adjusting a water jet loom, setting the warp density to 635 pieces/10 cm and the weft density to 210 pieces/10 cm, and weaving according to a twill weaving mode to obtain a primary fabric;
S3, soaking the primary fabric cloth in a cellose solution, and treating at 40 ℃ for 60min to obtain a pretreated fabric;
s4, dyeing the pretreated fabric, fully extruding the fabric by a padder with the pressure of 2.5Kg, and performing blank fixing in an oven at 160 ℃ to obtain a blank fixing fabric;
S5, diluting and uniformly mixing 30g/L of C6 water repellent agent, 10g/L of hydrophilic softener, 5g/L of penetrating agent and 0.1g/L of glacial acetic acid to prepare 100L of sizing liquid, placing the sizing liquid in a trough, soaking the blank sizing material in the trough for sizing, extruding and drying to obtain the nylon fabric with good air permeability and moisture removal performance.
Example 2: the difference between the nylon fabric with good air permeability and good moisture removal performance and the embodiment 1 is that the composite spandex is prepared by the preparation example 2, and the preparation method of the nylon fabric with good air permeability and good moisture removal performance comprises the following steps:
S1, taking composite spandex as a core yarn and nylon as an outer envelope yarn, twisting the core yarn and the nylon according to a strand number ratio of 1:3, and performing ring spinning to obtain a blended yarn;
s2, taking the blended yarns as warps and wefts, adjusting a water jet loom, setting the warp density to 565 pieces/10 cm and the weft density to 265 pieces/10 cm, and weaving according to a twill weaving mode to obtain a primary fabric;
S3, soaking the primary fabric cloth in a cellose solution, and treating at 50 ℃ for 30min to obtain a pretreated fabric;
s4, dyeing the pretreated fabric, fully extruding the fabric by a padder with the pressure of 2.5Kg, and performing blank fixing in an oven at 180 ℃ to obtain a blank fixing fabric;
S5, diluting and uniformly mixing 30g/L of C6 water repellent agent, 10g/L of hydrophilic softener, 5g/L of penetrating agent and 0.1g/L of glacial acetic acid to prepare 100L of sizing liquid, placing the sizing liquid in a trough, soaking the blank sizing material in the trough for sizing, extruding and drying to obtain the nylon fabric with good air permeability and moisture removal performance.
Example 3: the difference between the nylon fabric with good air permeability and good moisture removal performance and the embodiment 1 is that the composite spandex is prepared by the preparation example 3, and the preparation method of the nylon fabric with good air permeability and good moisture removal performance comprises the following steps:
S1, taking composite spandex as a core yarn and nylon as an outer envelope yarn, twisting the core yarn and the nylon according to a strand number ratio of 1:3, and performing ring spinning to obtain a blended yarn;
s2, taking the blended yarns as warps and wefts, adjusting a water jet loom, setting the warp density to be 585 roots/10 cm and the weft density to be 245 roots/10 cm, and weaving according to a satin weaving mode to obtain a primary fabric;
S3, soaking the primary fabric cloth in a cellose solution, and treating the primary fabric cloth at 40 ℃ for 50min to obtain a pretreated fabric;
S4, dyeing the pretreated fabric, fully extruding the fabric by a padder with the pressure of 2.5Kg, and performing blank setting in an oven with the temperature of 170 ℃ to obtain a blank set fabric;
S5, diluting and uniformly mixing 30g/L of C6 water repellent agent, 10g/L of hydrophilic softener, 5g/L of penetrating agent and 0.1g/L of glacial acetic acid to prepare 100L of sizing liquid, placing the sizing liquid in a trough, soaking the blank sizing material in the trough for sizing, extruding and drying to obtain the nylon fabric with good air permeability and moisture removal performance.
Example 4: the difference between the nylon fabric with good air permeability and good moisture removal performance and the nylon fabric of example 1 is that the preparation step S2 specifically comprises: the blended yarn was used as warp yarn and weft yarn, the water jet loom was controlled to set a warp density of 615 yarns/10 cm and a weft density of 225 yarns/10 cm, and the yarn was woven in a satin weaving manner to obtain a primary fabric, and the other steps were the same as those of preparation example 1.
Example 5: the difference between the nylon fabric with good air permeability and good moisture removal performance and the nylon fabric of example 1 is that the composite spandex is prepared in preparation example 4, and the other steps are the same as in example 1.
Example 6: the nylon fabric having excellent air permeability and moisture removal properties was different from example 1 in that the composite spandex was produced in production example 5, and the other steps were the same as in example 1.
Example 7: the nylon fabric with good air permeability and moisture removal performance was directly dyed without performing the pretreatment of immersing the primary fabric in a cellose solution in step S3, and the other steps were the same as in example 1.
Comparative example
Comparative example 1: the nylon fabric having excellent air permeability and moisture removal properties was different from example 1 in that the composite spandex was obtained in preparation example 6, and the other steps were the same as in example 1.
Comparative example 2: the nylon fabric having excellent air permeability and moisture removal properties was different from example 1 in that the composite spandex was obtained in preparation example 7, and the other steps were the same as in example 1.
Comparative example 3: the difference between the nylon fabric with good air permeability and good moisture removal performance and the nylon fabric in example 1 is that the preparation method comprises the following steps:
S1, performing ring spinning on the composite spandex prepared in the preparation example 1 to prepare composite spandex yarns;
s2, weaving the composite spandex yarns serving as wefts and nylon serving as warps through a water jet loom, adjusting the water jet loom to set the warp density to 635/10 cm and the weft density to 210/10 cm, and weaving according to a twill weaving mode to obtain the primary-made fabric;
S3, soaking the primary fabric cloth in 5g/L of a cellulose solution, and treating at 40 ℃ for 60min to obtain a pretreated fabric;
s4, dyeing the pretreated fabric, fully extruding the fabric by a padder with the pressure of 2.5Kg, and performing blank fixing in an oven at 160 ℃ to obtain a blank fixing fabric;
S5, diluting and uniformly mixing 30g/L of C6 water repellent agent, 10g/L of hydrophilic softener, 5g/L of penetrating agent and 0.1g/L of glacial acetic acid to prepare 100L of sizing liquid, placing the sizing liquid in a trough, soaking the blank sizing material in the trough for sizing, extruding and drying to obtain the nylon fabric with good air permeability and moisture removal performance.
Comparative example 4: the preparation method of the nylon fabric comprises the following steps:
S1, uniformly mixing 90g/min of diphenylmethane diisocyanate and 407g/min of polyol in a static mixer, wherein the polyol comprises polytetramethylene ether glycol and quaternary tetrapentanol with the molar ratio of 96:4, heating to 90 ℃ for reaction for 4 hours to obtain polyurethane prepolymer, and dissolving the polyurethane prepolymer in deionized water to prepare a polyurethane prepolymer solution with the mass concentration of 36%;
S2, curing the polyurethane prepolymer solution in a storage tank to obtain spinning solution, adding 0.2% of flow aid polyethylene glycol dimethacrylate into the spinning solution, introducing the spinning solution into a spinning assembly for spraying, stretching and drying to form tows, and synthesizing, winding and forming by false twisting to obtain spandex cakes; wherein the mass concentration of the spinning solution is 34%, the spinning speed is 550m/min, and the pre-drafting is formed to 9%, so as to finally obtain the 5-denier spandex fiber;
s3, mixing spandex fiber and nylon according to a mass ratio of 1:3, performing ring spinning to obtain blended yarns, and weaving the blended yarns serving as warps and wefts through a water jet loom to obtain a primary fabric;
S4, dyeing the primary fabric, fully extruding the primary fabric by a padder with the pressure of 2.5Kg, and performing blank setting in an oven with the temperature of 180 ℃ to obtain the fabric.
Performance test data
The nylon fabric with good air permeability and moisture removal performance obtained in examples 1 to 7 and comparative examples 1 to 4 were subjected to performance test for rebound resilience, air permeability, moisture permeability and perspiration fastness, each test was divided into three groups, and the average value of the result data of the three groups of test tests was recorded as the final result in table 2.
Detecting the moisture permeability of the nylon fabric according to the specification of national standard GB/T12704-1991 on the measurement of the moisture permeability of the fabric; according to the specification of national standard GB/T5453-1997 about fabric air permeability measurement, under the condition of specified pressure difference, measuring the air flow vertically passing through a given area of a sample within a certain time, and calculating the air permeability of the fabric; detecting the elastic elongation according to national standard FZ/T70006-2004 "knitted fabric tensile elastic recovery test method"; and detecting the perspiration resistance color fastness of the nylon fabric according to national standard GB/T3922-2013 textile color fastness test perspiration resistance color fastness.
TABLE 2
According to the performance detection data of examples 1-7 and comparative examples 1-4, it can be seen that the nylon fabric with good air permeability and moisture removal performance prepared by the preparation method provided by the application has high elasticity, excellent air permeability and moisture removal performance and high color fastness, and compared with the traditional nylon fabric preparation method of preparation example 4, the air permeability and moisture removal performance of the nylon fabric can be obviously improved, and the wearing comfort level is improved.
According to the performance detection data of examples 1-4, example 6 and comparative example 1, it can be seen that the nylon fabric prepared by the application adopts composite spandex, and is blended with bamboo pulp fibers with high air permeability and moisture removal, compared with the nylon fabric prepared by comparative example 1 without bamboo pulp fibers, the nylon fabric has better air permeability and moisture permeability than those of comparative example 1, and has more excellent air permeability and moisture removal, and the addition of the bamboo pulp fibers is beneficial to improving the color fastness of the nylon fabric; the modified bamboo pulp fiber introduces aldehyde groups into bamboo pulp fiber molecules, so that compared with the nylon fabric prepared from unmodified bamboo pulp fiber, the modified bamboo pulp fiber has better air permeability and moisture permeability, and the combination of dye molecules and the nylon fabric is firmer due to the introduction of the aldehyde groups, so that the color fastness of the nylon fabric is obviously enhanced.
As can be seen from the performance test data of examples 1 to 4 and comparative example 2, the nylon fabric prepared without the addition of the hydrophilic molecular chain extender has a slightly lower air permeability than the nylon fabric prepared with the addition of the hydrophilic chain extender, but is significantly reduced in moisture permeability because the hydrophilic molecular chain extender introduces hydrophilic groups into the polyurethane prepolymer to make the polyurethane prepolymer hydrophilic, and can significantly promote absorption and release of sweat by the nylon fabric.
According to the performance detection data of examples 1-4 and comparative example 3, it can be seen that the composite spandex and nylon are twisted into a core-spun structure to prepare the blended yarn to be used as the warp and weft of the nylon fabric, so that the nylon fabric has a more abundant void structure and specific surface area, and the air permeability and moisture removal property of the nylon fabric are improved.
According to the performance detection data of examples 1-4 and example 5, it can be seen that the air permeability and the moisture permeability of the nylon fabric prepared from the composite spandex pretreated by the nano TiO 2 and the ethanol in the preparation process are superior to those of the nylon fabric which is not pretreated, so that the nano TiO 2 and the ethanol pretreatment can improve the structure of the composite spandex, and the air permeability and the moisture permeability of the composite spandex are improved, so that the air permeability and the moisture permeability of the prepared nylon fabric are improved, and the wearing comfort is improved.
According to the performance detection data of examples 1-4 and example 7, it can be seen that the nylon fabric prepared by soaking in the solution of the cellulose has better air permeability and moisture permeability, and the cellulose hydrolyzes part of peptide bonds and cross-linked structures in fiber molecules of the nylon fabric, so that the fiber structure becomes loose, more micropores are generated, the discharge of air from the fabric is promoted, the air permeability and moisture permeability of the nylon fabric are further improved, and the wearing comfort is improved.
The present embodiment is only for explanation of the present application and is not to be construed as limiting the present application, and modifications to the present embodiment, which may not creatively contribute to the present application as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present application.
Claims (7)
1. The nylon fabric with good air permeability and moisture removal performance is characterized by comprising composite spandex and nylon; the composite spandex comprises, by weight, 45-50 parts of macromolecular polyol, 12-18 parts of polyisocyanate, 2-6 parts of hydrophilic molecular chain extender and 12-24 parts of bamboo pulp fiber;
The preparation method of the composite spandex comprises the following steps:
Mixing macromolecular polyol and polyisocyanate, heating and stirring under the inert gas atmosphere of 80-100 ℃, cooling to 60-70 ℃, adding a hydrophilic molecular chain extender, continuously stirring, adding triethylamine, and continuously stirring to obtain polyurethane stock solution, wherein the mass of the triethylamine is 58-64% of that of the hydrophilic molecular chain extender;
pouring the polyurethane stock solution into deionized water and stirring to obtain polyurethane prepolymer;
Adding bamboo pulp fiber and formaldehyde with the mass ratio of (8-10) of 1 into NaClO solution, carrying out ultrasonic treatment for 1-1.5h, adding into polyurethane prepolymer, mixing and stirring to obtain composite spandex stock solution;
Adding 3-5 parts of nano TiO 2 and 0.4-0.6 part of ethanol into the composite spandex stock solution by weight, and stirring for 5-10min by ultrasonic;
And curing the composite spandex stock solution, and obtaining the composite spandex through dry spinning after curing.
2. The nylon fabric with good air permeability and moisture removal performance according to claim 1, which is characterized in that: the macromolecular polyol is polyether polyol, and is selected from any one of polytetrahydrofuran glycol, polyethylene glycol, polypropylene glycol, polyglycerol ether and polyether alcohol.
3. The nylon fabric with good air permeability and moisture removal performance according to claim 1, which is characterized in that: the polyisocyanate is selected from any one of isophorone diisocyanate, toluene diisocyanate, 1, 6-hexyl diisocyanate and diphenylmethane diisocyanate.
4. The nylon fabric with good air permeability and moisture removal performance according to claim 1, which is characterized in that: the hydrophilic molecular chain extender is selected from any one of dimethylolpropionic acid, dimethylolbutyric acid, sodium ethylenediamine ethanesulfonate and triethanolamine.
5. The method for preparing the nylon fabric with good air permeability and moisture removal performance according to any one of claims 1 to 4, which is characterized by comprising the following steps:
taking the composite spandex as a core yarn and taking nylon as an outer envelope yarn, twisting the two yarns according to the strand number ratio of 1 (2-3), and performing ring spinning to obtain a blended yarn;
taking the blended yarn as warp and weft, and weaving according to the warp density of 565-635 yarns/10 cm and the weft density of 210-265 yarns/10 cm to obtain a primary fabric;
Dyeing the primary fabric, fully extruding, and performing blank sizing at 160-180 ℃ to obtain a blank sizing fabric;
Soaking and shaping the blank fabric in a shaping liquid, extruding and drying to obtain the nylon fabric with good air permeability and moisture removal performance, wherein the shaping liquid comprises a C6 water repellent agent, a hydrophilic softening agent, a penetrating agent and glacial acetic acid.
6. The method for preparing the nylon fabric with good air permeability and moisture removal performance according to claim 5, wherein the primary fabric is subjected to the following pretreatment before being dyed: soaking the primary fabric cloth in a biological enzyme solution, and treating for 30-60min at 40-50 ℃, wherein the biological enzyme is cellulose.
7. The method for preparing the nylon fabric with good air permeability and moisture removal performance according to claim 5, which is characterized in that: when the blended yarn is woven to prepare the primary fabric, twill weave or satin weave is adopted.
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| CN108716036A (en) * | 2018-04-02 | 2018-10-30 | 漳州伟伊化纤有限公司 | A kind of high transparency wrap yarn and preparation method thereof |
| CN113789597A (en) * | 2021-09-28 | 2021-12-14 | 晋江万兴隆化纤制品有限公司 | Moisture-absorbing and breathable chemical fiber fabric and preparation method thereof |
| CN117166113A (en) * | 2023-09-06 | 2023-12-05 | 深圳市棉花谈服饰有限公司 | Antibacterial skin-friendly fabric |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108716036A (en) * | 2018-04-02 | 2018-10-30 | 漳州伟伊化纤有限公司 | A kind of high transparency wrap yarn and preparation method thereof |
| CN113789597A (en) * | 2021-09-28 | 2021-12-14 | 晋江万兴隆化纤制品有限公司 | Moisture-absorbing and breathable chemical fiber fabric and preparation method thereof |
| CN117166113A (en) * | 2023-09-06 | 2023-12-05 | 深圳市棉花谈服饰有限公司 | Antibacterial skin-friendly fabric |
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