Machine washable ultra-light sunscreen wool fabric and preparation process thereof

Abstract

The invention relates to a machine-washable ultra-light sunscreen wool fabric and a preparation process thereof. The preparation process specifically comprises the following steps: carrying out shrink-proof treatment on superfine wool yarns subjected to cleaning, degreasing and wax removal treatment by utilizing a shrink-proof finishing agent to obtain shrink-proof superfine wool yarns; the preparation method comprises the following steps: mixing mineral nano particles, a silane coupling agent and nylon 66 slices to obtain a mixed system, and carrying out melt extrusion, cooling molding and drafting setting treatment on the mixed system to obtain FDY (Fully Drawn Yarn) filaments; fDY filaments are used as yarn cores, anti-shrinkage superfine wool yarns are used as outer layers, wool core-spun yarns are prepared through a core-spun yarn process, and the fabric is obtained by spinning the wool core-spun yarns as warp yarns and weft yarns. The shrink-proof superfine wool yarn is prepared through shrink-proof treatment, the shrink-proof performance of the product is excellent, the machine washing target can be achieved, nylon 66 slices are used as raw materials, mineral nanoparticles are added, the nylon 66 slices are made into FDY filaments, the sun-proof and ultraviolet-proof performance of the product can be improved, and the wool core-spun yarn can achieve the purposes of light weight and product strength increasing.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of fabrics, and particularly relates to a machine-washable super-light sun-proof wool fabric and a preparation process thereof. BACKGROUND

[0002] As a natural protein fiber, wool is favored for its excellent warmth retention, moisture absorption and perspiration, soft hand feeling and natural luster, and is an important raw material for high-grade clothing fabrics. However, traditional wool fabrics have the following significant technical bottlenecks and consumer pain points in application, especially in the modern clothing field pursuing lightness, easy care and functionality (such as spring and summer outdoor and commuting sun-proof clothing), which are as follows. Poor machine washability: the scale structure on the surface of wool fibers is prone to directional friction effect (felting) under wet conditions and mechanical action, resulting in severe shrinkage, deformation and pilling of the fabric, which makes most wool clothes have to rely on tedious hand washing or professional dry cleaning, greatly limiting their daily wear convenience and market popularity, especially not meeting the urgent needs of modern consumers for easy care; Insufficient functionality (especially sun-proof property): pure wool has certain natural ultraviolet light absorption capacity, but its sun-proof and ultraviolet resistance effect is usually low, which is difficult to meet the sun-proof requirements of long-time outdoor activities, and it is also prone to color fading. Traditional finishing methods (such as coating) can endow the fabric with sun-proof function, but often result in significant weight gain and other problems.

[0003] Therefore, the present application provides a machine-washable super-light sun-proof wool fabric and a preparation process thereof to solve the above technical problems. SUMMARY

[0004] The purpose of the present application is to provide a machine-washable super-light sun-proof wool fabric and a preparation process thereof to solve the above problems.

[0005] The present application achieves the above-mentioned purpose through the following technical solutions: A preparation process of a machine-washable super-light sun-proof wool fabric, specifically comprising the following steps: Step 1: using a shrink-resistant finishing agent to perform shrink-resistant treatment on the super-fine wool yarn after cleaning, degreasing and wax removal to obtain shrink-resistant super-fine wool yarn; wherein the preparation raw materials of the shrink-resistant finishing agent include, by mass percentage, ficin 45-55%, soapberry saponin 10-15%, Gracilaria extract 6-10%, glutathione 10-16%, N-acetylcysteine 7-13%, and sodium erythorbate 8-12%; Step 2: obtaining FDY filaments after melt extrusion, cooling molding and drawing and setting treatment of the mixed system obtained by mixing mineral nanoparticles, silane coupling agent and nylon 66 chips; Step three: obtaining the wool core-spun yarn through the core-spun yarn process by taking the FDY filament as the core yarn and the shrink-resistant super fine wool yarn as the outer layer, and obtaining the fabric by weaving the wool core-spun yarn as the warp and weft yarns.

[0006] As a further optimization scheme of the application, in step one, the super fine wool is 13.5-15.5um diameter super fine merino wool.

[0007] As a further optimization scheme of the application, the Gracilaria extract is Gracilaria methanol extract, and the obtaining method is as follows: after washing and dehydrating the Gracilaria, methanol with a mass concentration of 75-85% is used for extraction at 45-48℃, and the obtained extract is concentrated, vacuum dried and made into powder to obtain the Gracilaria methanol extract.

[0008] As a further optimization scheme of the application, the shrink-resistant treatment is specifically as follows: 3-8wt% of shrink-resistant finishing agent is added in deionized water to prepare a shrink-resistant treatment finishing liquid, the super fine wool is soaked in the shrink-resistant treatment finishing liquid at a mass ratio of 1:8-10, the pH is adjusted to 6-7, and the super fine wool is treated at 45-50℃ for 45-60min, and then dried for standby.

[0009] As a further optimization scheme of the application, in step two, the mineral nano-particles include at least one of nano-titanium dioxide and nano-zinc oxide. The amount of the mineral nano-particles is 5-7wt%, the amount of the silane coupling agent is 2-4wt%, and the rest is nylon 66 chip.

[0010] As a further optimization scheme of the application, in step three, the mass ratio of the FDY filament and the shrink-resistant super fine wool yarn is 1:2.4-3.6.

[0011] As a further optimization scheme of the application, the weaving organization of the fabric is plain weave, the fineness of the warp and weft yarns is 7-15D, the weaving density of the warp yarns is 70-110root / cm, and the weaving density of the weft yarns is 60-80root / cm.

[0012] A machine-washable wool super-light sun-proof fabric is prepared by the preparation process.

[0013] The application has the following beneficial effects: The shrink-proof super-fine wool yarn is prepared by performing shrink-proof treatment on the super-fine wool yarn, so that the final fabric product has excellent shrink-proof performance and is not easy to deform, and the machine washing target can be achieved; the nylon 66 chip is used as raw material, mineral nanoparticles are added to prepare the FDY filament, the sun-proof and ultraviolet-proof performance of the product can be improved, and the FDY filament is used as the yarn core, and the shrink-proof super-fine wool yarn is wrapped on the outer surface of the yarn core, compared with the fabric which is woven by the shrink-proof super-fine wool yarn alone, the lightweight and strength-increasing targets can be achieved, and the lightweight makes the user feel more comfortable when wearing; The shrink-proof finishing agent containing ficin, soapberry saponin and Gracilaria extract is used for performing shrink-proof finishing on the fabric, so that the shrink-proof performance and sun-proof performance of the fabric are significantly improved, the fabric has high color fastness, and the product competitiveness is improved. DETAILED DESCRIPTION

[0014] It is necessary to point out here that the following detailed description is only used to further illustrate the application, and cannot be understood as limiting the protection scope of the application, and the skilled in the art can make some non-essential improvements and adjustments to the application according to the above application content.

[0015] MATERIALS The diameter of the super-fine merino wool is 13.5-15.5 um, preferably 15 um; The nylon 66 fiber chip is purchased from Huafeng Group Co., Ltd., the relative viscosity is 2.3, and the melting point is 258.4 DEG C; 3, Gracilaria (Gracilaria is a kind of marine algae of Rhodophyta) methanol extract, taproot alga (taproot alga is a kind of marine algae of Rhodophyta); purchased from Longhai City Donghai Bay Seaweed Cultivation and Comprehensive Development Co., Ltd.; the method is that after washing and dehydrating Gracilaria (or taproot alga), methanol with a mass concentration of 75-85% (preferably a mass concentration of 80%) is used for extraction at 45-48 DEG C, and the obtained extract is concentrated, vacuum dried and made into powder Gracilaria methanol extract (or taproot alga methanol extract); Gracilaria ethanol water extract: different from the above-mentioned method for obtaining Gracilaria methanol extract, ethanol with the same mass concentration is used instead of methanol; 4, ficin purchased from Sichuan Century Star Biological Technology Co., Ltd., purity is 99%; Soapberry saponin purchased from Nanjing Purun Biological Technology Co., Ltd., purity is 99%; glutathione (purity is 99%), N-acetylcysteine (purity is 99%), sodium erythorbate (purity is 98%) are all purchased from Shanghai Yuan Ye Biological Technology Co., Ltd.; 5, silane coupling agent: silane coupling agent KH-550; 6. Mineral nanoparticles: at least one of nanometer titanium dioxide and nanometer zinc oxide, preferably the mass ratio of nanometer titanium dioxide and nanometer zinc oxide is 1:1; 7. pH regulator: sodium hydroxide or citric acid; 8. The weaving organization of the fabric is plain weave, and the fineness of the warp and weft is 7-15D (preferably 12D), the weaving density of the warp is 70-110 roots / cm (preferably 85 roots / cm), and the weaving density of the weft is 60-80 roots / cm (preferably 67 roots / cm); In the following examples, unless a specific method is specified, all can be carried out according to the conventional method, and other materials, reagents, etc. can be obtained by commercial means if not otherwise specified.

[0016] Method 2.1 Preparation of machine-washable super-light sunscreen fabric of sheep wool 2.1.1 Anti-shrinkage treatment of superfine sheep wool yarn The anti-shrinkage treatment of the superfine merino wool after cleaning, degreasing and wax removal is obtained by using an anti-shrinkage finishing agent, specifically, 3-8wt% (preferably 5.5wt%) of the anti-shrinkage finishing agent is added to deionized water to prepare an anti-shrinkage treatment finishing solution, the superfine wool is soaked in the anti-shrinkage treatment finishing solution at a mass ratio of 1:8-10 (preferably 1:9), the pH is adjusted to 6-7 (preferably 6.5), and the treatment is carried out at 45-50°C for 45-60min (preferably at 47°C for 55min); The preparation raw materials of the anti-shrinkage finishing agent include ficin 45%, soapberry saponin 15%, methanol extract of Gracilaria 6%, glutathione 16%, N-acetylcysteine 10%, and sodium erythorbate 8% by mass percentage.

[0017] 2.1.2 Preparation of FDY filament The FDY filament is obtained by melt extrusion, cooling molding, and drawing and setting treatment of the mixed system obtained by mixing mineral nanoparticles, silane coupling agent, and nylon 66 chips. The process parameters of melt spinning are as follows: the screw temperature of melt extrusion: 250 / 270 / 285 / 285°C (spindle); the side blowing temperature of cooling molding is 21±2°C, the humidity is 67±3%, and the wind speed is 0.5±0.1m / s; the total draw ratio of drawing and setting (FDY one-step method) is 5.0±0.3, wherein the first godet roll: 85±5°C, the speed 550±30m / min; the second godet roll: 180±5°C, the speed 2750±50m / min; the third godet roll: 190±5°C, the speed 2550±50m / min; The amount of mineral nanoparticles is 5-7wt% (preferably 6wt%), the amount of silane coupling agent is 2-4wt% (preferably 3.5wt%), and the rest is nylon 66 chips.

[0018] 2.1.3 Textile fabric made from the yarn The FDY filament is used as the core, and the superfine wool yarn is used as the outer layer. The mass ratio of the FDY filament and the shrink-resistant superfine wool yarn is 1:2.4-3.6 (preferably 1:3.2). The wool core-spun yarn is prepared by the core-spun yarn process (using a ring spinning machine, the superfine wool yarn is fed from the trumpet, and is stretched by the stretching mechanism, and the stretching multiple is 24±1.5; the FDY filament is fed from the front roller nip, and is output at the center position of the superfine wool yarn, and is twisted together with the stretched superfine wool yarn into the twisting triangle area; the twist is 870 / m±30 / m). The wool core-spun yarn is used as the warp and weft yarns to weave the fabric (denoted as fabric S1).

[0019] 2.2 Exploration of preferred schemes Based on the fabric S1 of step 2.1 above, the preparation component ratio of the shrink-resistant finishing agent is adjusted, specifically as follows: Fabric S2: In this experimental group, the preparation raw materials of the shrink-resistant finishing agent are adjusted, including ficin 50%, soapberry saponin 13%, methanol extract of Gracilaria 8%, glutathione 11%, N-acetylcysteine 8%, and sodium erythorbate 10% by mass percentage.

[0020] Fabric S3: In this experimental group, the preparation raw materials of the shrink-resistant finishing agent are adjusted, including ficin 55%, soapberry saponin 10%, methanol extract of Gracilaria 10%, glutathione 10%, N-acetylcysteine 7%, and sodium erythorbate 8% by mass percentage.

[0021] 2.3 Setting of comparative experiments 2.3.1 Comparative experiment on preparation components of shrink-resistant finishing agent Based on the fabric S2 of step 2.2 above, the preparation components of the shrink-resistant finishing agent are adjusted, specifically as follows: Fabric D1: In this comparative example group, the preparation raw materials of the shrink-resistant finishing agent are adjusted, including bromelain 50%, soapberry saponin 13%, methanol extract of Gracilaria 8%, glutathione 11%, N-acetylcysteine 8%, and sodium erythorbate 10% by mass percentage; the rest are consistent with fabric S2.

[0022] Fabric D2: In this comparative example group, the preparation raw materials of the shrink-resistant finishing agent are adjusted, including papain 50%, soapberry saponin 13%, methanol extract of Gracilaria 8%, glutathione 11%, N-acetylcysteine 8%, and sodium erythorbate 10% by mass percentage; the rest are consistent with fabric S2.

[0023] Fabric D3: In the present comparative example group, the preparation raw materials of the shrinkage-resistant finishing agent are adjusted to include ficin 50%, Gracilaria methanol extract 21%, glutathione 11%, N-acetylcysteine 8%, sodium erythorbate 10% by mass percentage; the rest are consistent with fabric S2.

[0024] Fabric D4: In the present comparative example group, the preparation raw materials of the shrinkage-resistant finishing agent are adjusted to include ficin 50%, Tween 80 13%, Gracilaria methanol extract 8%, glutathione 11%, N-acetylcysteine 8%, sodium erythorbate 10% by mass percentage; the rest are consistent with fabric S2.

[0025] Fabric D5: In the present comparative example group, the preparation raw materials of the shrinkage-resistant finishing agent are adjusted to include ficin 50%, tea saponin 13%, Gracilaria methanol extract 8%, glutathione 11%, N-acetylcysteine 8%, sodium erythorbate 10% by mass percentage; the rest are consistent with fabric S2.

[0026] Fabric D6: In the present comparative example group, the preparation raw materials of the shrinkage-resistant finishing agent are adjusted to include ficin 50%, soapberry saponin 13%, glutathione 19%, N-acetylcysteine 8%, sodium erythorbate 10% by mass percentage; the rest are consistent with fabric S2.

[0027] Fabric D7: In the present comparative example group, the preparation raw materials of the shrinkage-resistant finishing agent are adjusted to include ficin 50%, soapberry saponin 13%, glutathione 11%, N-acetylcysteine 16%, sodium erythorbate 10% by mass percentage; the rest are consistent with fabric S2.

[0028] Fabric D8: In the present comparative example group, the preparation raw materials of the shrinkage-resistant finishing agent are adjusted to include ficin 50%, soapberry saponin 13%, glutathione 11%, N-acetylcysteine 8%, sodium erythorbate 18% by mass percentage; the rest are consistent with fabric S2.

[0029] Fabric D9: In the present comparative example group, the preparation raw materials of the shrinkage-resistant finishing agent are adjusted to include ficin 50%, soapberry saponin 13%, Cladophora methanol extract 8%, glutathione 11%, N-acetylcysteine 8%, sodium erythorbate 10% by mass percentage; the rest are consistent with fabric S2.

[0030] Fabric D10: In the comparative example group, the preparation raw materials of the shrink-resistant finishing agent are adjusted to include ficin 50%, Gleditsia sinensis saponin 13%, Gracilaria ethanol extract 8%, glutathione 11%, N-acetylcysteine 8%, and sodium erythorbate 10% by mass percentage; the rest are consistent with fabric S2.

[0031] 2.3.2 Comparative experiments on fabric preparation process Fabric KB1: In the blank group, the shrink-resistant treatment of the superfine wool yarn after cleaning, degreasing and dewaxing treatment by using the shrink-resistant finishing agent is omitted; the rest are consistent with fabric S2.

[0032] Fabric KB2: In the blank group, the addition of mineral nanoparticles in nylon 66 chips is omitted; the rest are consistent with fabric S2.

[0033] Performance test 3.1, shrinkage rate performance test Shrinkage resistance performance test: fold the fabric sample (experimental group fabrics S1-3, comparative example group fabrics D1-10, and blank group fabrics KB1-2), sew it with polyester thread, make a cross mark on each end, and record the size L0 before shrinking. Put the sample in the washing machine for continuous washing for 3h, the speed is 1600r / min, the temperature is 35℃, and the temperature is 45℃ for drying, and record the longitudinal and transverse size L1. According to L0 and L1, the shrinkage rate of the sample is calculated, the calculation formula is: [(L0-L1) / L0]x100%, the test results calculated are shown in Table 1: Table 1 Shrinkage rate performance test data recording table ; Experimental conclusion: based on the data in Table 1, it can be seen that after the shrink-resistant treatment of superfine wool yarn with the shrink-resistant finishing agent containing ficin, Gleditsia sinensis saponin and Gracilaria extract, the shrinkage rate of the finally prepared fabric is significantly reduced, and the shrinkage rate is as low as 2.17%, so as to realize the goal of machine washing. Through comparison, it is found that the three of ficin, Gleditsia sinensis saponin and Gracilaria extract can have a synergistic effect.

[0034] 3.2, color fastness performance test Light fastness test: according to the determination method of "GB / T 8427-1998 Textile Color Fastness Test: Light Fastness: Xenon Arc", the light fastness of the above fabric sample (experimental group fabrics S1-3, comparative example group fabrics D1-10, and blank group fabrics KB1-2) is detected. Sweat fastness: the sweat fastness of the above fabric samples (the experimental group fabric S1-3, the comparative example group fabric D1-10 and the blank group fabric KB1-2) is detected according to the detection method of GB / T 3922-2013 Textiles - Colour fastness to perspiration; The color staining grade is evaluated by GB / T 251-2008 Textiles - Colour fastness - Assessment of staining with grey scale, which is divided into nine grades, i.e. 5, 4-5, 4, 3-4, 3, 2-3, 2, 1-2, 1, wherein 1 is the worst color fastness and 5 is the best color fastness, and the experimental data is recorded in Table 2: Table 2 Fabric color fastness performance test data recording table ; Experimental conclusion: the fabric S1-3 prepared by the preparation method has good color fastness to artificial light and sweat fastness, and can maintain good sweat fastness even if the sweat is immersed, and is not easy to discolor after washing and airing, and has obvious product advantages, and further analysis shows that the shrink-proof finishing agent used in the shrink-proof finishing has a great influence on the color fastness of the fabric, and the shrink-proof finishing agent containing ficin, soapberry saponin and Gracilaria methanol extract has the best effect.

[0035] 3.3, Sunscreen performance test According to the standard of GB / T 18830-2009 Evaluation of the ultraviolet protection factor of textiles, 10 points are taken from different positions of each sample, and the transmittance of ultraviolet light with a wavelength of 200-400 nm (TUVA) is tested as the evaluation standard of ultraviolet resistance performance; only when the transmittance of UVA is less than 5% can it be called "ultraviolet protection product", and the experimental data is recorded in Table 3: Table 3 Fabric sunscreen performance test data recording table ; Experimental conclusion: according to the data analysis in Table 3, it can be known that adding mineral nanoparticles into the melting system of nylon 66 chips can significantly improve the ultraviolet resistance performance of the fabric, in addition, the use of different components of the shrink-proof finishing agent also has an influence on the ultraviolet resistance performance of the fabric, the combination of ficin, soapberry saponin and Gracilaria extract has a synergistic effect, which can further reduce the ultraviolet transmittance of the fabric, and has obvious advantages.

[0036] The above examples only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the patent of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application.

Claims

1. A manufacturing process for a machine-washable, ultralight wool sun-protective fabric, characterized in that: Specifically, the following steps are included: Step 1: Use an anti-shrinkage finishing agent to treat the washed, degreased and dewaxed superfine wool yarn to obtain anti-shrinkage superfine wool yarn; The raw materials for preparing the anti-shrinkage finishing agent, by mass percentage, include 45-55% fig protease, 10-15% saponins, 6-10% Gracilaria extract, 10-16% glutathione, 7-13% N-acetylcysteine, and 8-12% sodium isoascorbate. Step 2: The mixture of mineral nanoparticles, silane coupling agent, and nylon 66 chips is melt-extruded, cooled and shaped, and then drawn and shaped to obtain FDY filaments. Step 3: Using FDY filament as the core and shrink-resistant superfine wool yarn as the outer layer, wool core-spun yarn is prepared through a core-spun yarn process to obtain wool core-spun yarn. The wool core-spun yarn is then used as warp and weft yarns to weave fabric.

2. The preparation process of a machine-washable wool ultralight sun-protective fabric according to claim 1, characterized in that: In step one, the superfine wool is superfine Merino wool with a diameter of 13.5-15.5 μm.

3. The preparation process of a machine-washable wool ultralight sun-protective fabric according to claim 1, characterized in that: The Gracilaria extract is a Gracilaria methanol extract, which is obtained by washing and dehydrating Gracilaria, and then extracting it with methanol at a mass concentration of 75-85% at 45-48℃. The resulting extract is concentrated and vacuum dried to make a powdered Gracilaria methanol extract.

4. The preparation process of a machine-washable wool ultralight sun-protective fabric according to claim 1, characterized in that: The shrink-proof treatment specifically involves adding 3-8 wt% of shrink-proof finishing agent to deionized water to prepare a shrink-proof finishing solution. The superfine wool is then immersed in the shrink-proof finishing solution at a mass ratio of 1:8-10, the pH is adjusted to 6-7, and the wool is treated at 45-50℃ for 45-60 minutes before drying for later use.

5. The preparation process of a machine-washable wool ultralight sun-protective fabric according to claim 1, characterized in that: In step two, the mineral nanoparticles include at least one of nano-titanium dioxide and nano-zinc oxide; The amount of the mineral nanoparticles is 5-7 wt%, the amount of the silane coupling agent is 2-4 wt%, and the balance is nylon 66 chips.

6. The preparation process of a machine-washable wool ultralight sun-protective fabric according to claim 1, characterized in that: In step three, the mass ratio of FDY filament to shrink-resistant microfiber wool yarn is 1:2.4-3.

6.

7. The preparation process of a machine-washable wool ultralight sun-protective fabric according to claim 1, characterized in that: The fabric is woven in a plain weave, with a warp and weft fineness of 7-15D. The warp yarn weaving density is 70-110 yarns / cm, and the weft yarn weaving density is 60-80 yarns / cm.

8. A machine-washable, ultralight wool sun-protective fabric, characterized in that: It is prepared by any of the preparation processes described in 1-7 above.