Bio-based four-way stretch antifouling fabric, preparation process thereof and garment fabric

Abstract

The invention provides a bio-based four-way stretch antifouling fabric, a preparation process thereof and a garment fabric. The process comprises the following steps: drawing in nylon bio-based fibers and corn bio-based spandex yarns, and weaving to obtain bio-based brocade / spandex gray fabric; and sequentially carrying out cold-batch desizing pretreatment, dyeing fixation treatment, medium-dark color high-fastness treatment and waterproof setting treatment on the bio-based brocade / spandex gray fabric. The bio-based four-way stretch anti-fouling fabric completely made of plant source materials has the advantages of pure natural ice silk, soft touch feeling, 360-degree super-elastic tensile property, unique pilling resistance, quick cotton absorption feeling and good fluoride-free durable waterproof performance, and is very suitable for being used as fabrics in the field of science and technology garments.

Description

Technical Field

[0001] The invention belongs to the technical field of fabric materials, and in particular relates to a bio-based four-way stretch anti-fouling fabric and a preparation process thereof, and clothing fabric. Background Art

[0002] As an emerging environmentally friendly material, the development of bio-based fabrics has benefited from the progress of science and technology and the improvement of environmental awareness. This type of fabric is made of plants or microorganisms through biotechnology or chemical methods. It has good renewability and biodegradability, so it has obvious advantages in sustainable development and environmental protection. With the continuous advancement of science and technology, the types and uses of bio-based fabrics are also expanding, from the initial cellulose fiber to the current variety of bio-based fibers, such as polylactic acid fiber, marine bio-based fiber, etc. These fabrics are not only environmentally friendly, but also comparable to traditional chemical fibers in performance, and even better in some aspects. Designers are also trying to use various crop wastes to develop fabrics, such as using genetically modified technology to cultivate crops with specific properties as a source of fabrics. These efforts are promoting the development of bio-based fabrics in a more environmentally friendly and sustainable direction.

[0003] In general, the development of bio-based fabrics is not only an environmentally friendly alternative to traditional petroleum-based chemical fibers, but also an important direction for the sustainable development of the textile industry in the future. With the continuous advancement of technology and the gradual acceptance of the market, bio-based fabrics are expected to occupy a larger market share in the future.

[0004] Therefore, in this field, there is an urgent need to further comprehensively improve the waterproof, high-efficiency anti-fouling and elastic properties of bio-based fabrics, so as to expand their applications in clothing, home textiles and industrial textiles. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a bio-based four-way stretch anti-fouling fabric and its preparation process and clothing fabric. The present invention is a bio-based four-way stretch anti-fouling fabric made entirely of plant-based materials, which has pure natural ice silk and soft touch, 360° super elastic stretch performance, unique anti-pilling and fast cotton absorption, and good fluorine-free durable waterproof performance, so it is very suitable for use in the field of scientific and technological clothing fabrics.

[0006] In order to achieve the purpose of the invention, the present invention adopts the following technical solutions:

[0007] In a first aspect, the present invention provides a process for preparing a bio-based four-way stretch anti-fouling fabric, the process comprising the following steps:

[0008] S1. Drawing in and weaving nylon bio-based fiber and corn bio-based spandex yarn to obtain bio-based nylon-spandex grey fabric;

[0009] S2, sequentially subjecting the bio-based nylon-spandex fabric obtained in step S1 to cold-batch desizing pre-treatment, dyeing and fixing treatment, medium-dark color high fastness treatment and waterproof setting treatment.

[0010] For bio-based nylon-spandex grey cloth, the present invention improves the cold-batch desizing effect and the hair effect by reasonably regulating the specific steps of the cold-batch desizing pre-treatment and the composition of its working liquid; at the same time, the mechanical force in the dyeing and fixing treatment process is utilized to enable the yarn to be fully opened, thereby reducing the stress between the yarns and improving the color fastness of the fabric, ultimately forming a good soft and glutinous feel, excellent color saturation, and maintaining good breaking strength and resilience, and is suitable for use in the fields of outdoor sportswear and down jackets.

[0011] Preferably, the nylon bio-based fiber in step S1 includes bio-based nylon 510 .

[0012] Preferably, the mass ratio of the nylon bio-based fiber and the corn bio-based spandex yarn in step S1 is (82-87):(13-18), preferably (85-86):(14-15), for example, it can be 82:18, 83:17, 84:16, 85:15, 86:14, 87:13, etc.

[0013] Preferably, the cold stacking desizing pre-treatment in step S2 includes tension-free cold stacking treatment and in-cylinder refining desizing treatment in sequence.

[0014] Preferably, the tension-free cold stacking treatment step comprises: firstly subjecting the bio-based nylon-spandex fabric obtained in step S1 to elastic loose cloth unwinding treatment, and then subjecting it to steam humidification treatment, and then subjecting it to degreasing and tension-free loose stacking treatment in sequence.

[0015] In view of the fatigue-prone material properties of nylon bio-based fiber and corn bio-based spandex, compared with the common non-elastic nylon cold stacking process, the present invention adopts a method of pre-steam humidification to loosen the elastic fabric to release the original tight internal stress of the elastic fabric.

[0016] Preferably, the temperature of the steam humidification treatment is 110-130°C, for example, 110°C, 115°C, 120°C, 125°C, 130°C, etc.

[0017] Preferably, the degreasing process includes degreasing in a liquid alkali solution, so as to achieve complete relaxation and expansion of the fabric.

[0018] Preferably, the degreasing temperature is 20-35°C, for example, 20°C, 25°C, 30°C, 35°C, etc.

[0019] Preferably, the time of the tension-free loose composting treatment is 12 to 72 hours, for example, 12 hours, 15 hours, 20 hours, 30 hours, 40 hours, 50 hours, 60 hours, 70 hours, 72 hours, etc.

[0020] Preferably, the composition of the working liquid in the tension-free cold stack includes: 2-6% liquid alkali, 5-10 g / L refining agent and 3-5 g / L degreasing agent.

[0021] In the present invention, the mass concentration of the liquid caustic soda is 2-6%, for example, it can be 2%, 3%, 4%, 5%, 6%, etc.

[0022] In the present invention, the mass concentration of the refining agent is 5-10 g / L, for example, 5 g / L, 6 g / L, 7 g / L, 8 g / L, 9 g / L, 10 g / L, etc. The refining agent exemplarily includes Sunmorl WX-8600.

[0023] In the present invention, the mass concentration of the degreasing agent is 3-5 g / L, for example, 3 g / L, 3.5 g / L, 4 g / L, 4.5 g / L, 5 g / L, etc. The degreasing agent exemplarily includes Zhuangjie spandex degreasing agent ZJ-RH48.

[0024] Preferably, the step of refining and desizing treatment in the cylinder comprises: performing desizing treatment at a temperature of 80°C to 90°C (for example, 80°C, 82°C, 85°C, 88°C, 90°C, etc.) and a vehicle speed of 25m / min to 30m / min (for example, 25m / min, 26m / min, 27m / min, 28m / min, 29m / min, 30m / min, etc.), adding the following additives in sequence according to the amount of water: adding 1 to 4g / L (for example, 1g / L, 1.5g / L, 2g / L, 2.5g / L, 3g / L, 3.5g / L, 4g / L, etc.) of a phosphorus-free organic chelating agent at a uniform speed for 5min to 10min (for example, 5min, 6min, 7min, 8min, 9min, 10min, etc.), and mixing at 5min Within n to 10 min (for example, 5 min, 6 min, 7 min, 8 min, 9 min, 10 min, etc.), 15 to 20 g / L (for example, 15 g / L, 16 g / L, 17 g / L, 18 g / L, 19 g / L, 20 g / L, etc.) of liquid caustic soda is added at a uniform speed, within 10 min, 3 to 8 g / L (for example, 3 g / L, 4 g / L, 5 g / L, 6 g / L, 7 g / L, 8 g / L, etc.) of refining agent is added at a uniform speed, and then 2 to 5 g / L (for example, 2 g / L, 2.5 g / L, 3 g / L, 3.5 g / L, 4 g / L, 4.5 g / L, 5 g / L, etc.) of desizing agent and 3 to 5 g / L (for example, 3 g / L, 3.5 g / L, 4 g / L, 4.5 g / L, 5 g / L, etc.) of degreasing agent are added.

[0025] Preferably, the raw material of the phosphorus-free organic chelating agent includes a combination of sodium aminotriacetate (NTA), magnesium salt and copper salt. The present invention adopts phosphorus-free raw materials to prepare the above-mentioned chelating agent, which can effectively control the metal ion content in the grey cloth and dyeing water, thereby indirectly controlling the decomposition rate of hydrogen peroxide, preventing excessive damage to the fabric, thereby further promoting the removal of degraded impurities from the fiber surface.

[0026] Preferably, the refining agent is a low-temperature refining agent composed of a surfactant and a low-temperature hydrogen peroxide activator complex. The refining agent exemplarily includes the refining agent SUNMORL WX-8600.

[0027] Preferably, the desizing agent includes a low-foam desizing agent. The desizing agent exemplarily includes the Meiko desizing agent M1011. Compared with the traditional desizing agent, the desizing agent provided by the present invention can penetrate faster and improve the fabric hair effect and desizing effect.

[0028] Preferably, the degreasing agent includes a nonionic degreasing agent for spandex. The degreasing agent exemplarily includes ZJ-RH48 degreasing agent. The nonionic degreasing agent for spandex provided by the present invention has a protective effect for desizing bio-based nylon-spandex fabrics in an alkaline environment, and also has the functions of assisting desizing, preventing dye agglomeration, and ensuring uniform and bright dyeing.

[0029] Preferably, the cold desizing pre-treatment in step S2 also includes a pre-forming treatment.

[0030] Preferably, the temperature of the pre-setting treatment is 190-195°C, for example, 190°C, 191°C, 192°C, 193°C, 194°C, 195°C, etc.; the cloth speed is 30-40m / min, for example, 30m / min, 32m / min, 35m / min, 38m / min, 40m / min, etc. The present invention avoids the problem of excessive shrinkage after washing or ironing of bio-based nylon-spandex fabrics due to excessive elasticity by adjusting the parameters of the pre-setting treatment.

[0031] Preferably, the working liquid in the pre-setting treatment includes 1.5-4 g / L of anti-yellowing agent, for example, 1.5 g / L, 2 g / L, 2.5 g / L, 3 g / L, 3.5 g / L, 4 g / L, etc.

[0032] Preferably, the dyeing method in step S2 is overflow dyeing or warp dyeing.

[0033] Preferably, the dyeing process in step S2 includes first adding an acid leveling agent solution at 35-45°C (for example, 35°C, 38°C, 40°C, 42°C, 45°C, etc.), running for 2-5min (for example, 2min, 3min, 4min, 5min, etc.), then adding a weak acid dye and glacial acetic acid, adjusting the pH value of the system to 4, and then heating to 95-105°C (for example, 95°C, 98°C, 100°C, 102°C, 105°C, etc.) at a rate of 1-2°C / min (for example, 1°C / min, 1.5°C / min, 2°C / min, etc.), keeping warm for 30-45min (for example, 30min, 35min, 40min, 45min, etc.), draining after cooling, and washing with water 3 times.

[0034] Preferably, the solvent of the acidic leveling agent solution is water.

[0035] Preferably, the mass concentration of the acid leveling agent solution is 1-2%, for example, 1%, 1.2%, 1.5%, 1.8%, 2%, etc.

[0036] Preferably, the dyeing in step S2 further includes a color fixing and washing treatment.

[0037] Preferably, the color fixing water washing process is to add the following reagents in order according to the amount of water: 2-4 g / L of high fastness color fixing agent (for example, 2 g / L, 2.5 g / L, 3 g / L, 3.5 g / L, 4 g / L, etc.), 0.5-2 g / L of glacial acetic acid (for example, 0.5 g / L, 1 g / L, 1.5 g / L, 2 g / L, etc.), adjust the pH value of the system to 5, first carry out the washing at a temperature of 75-80 ° C (for example, 75 ° C, 78 ° C, 80 ° C, etc.), and then wash the color fixing agent with water in a fixed manner. Carry out the first color fixing and heat preservation for 20 to 30 minutes (for example, it can be 20 minutes, 22 minutes, 25 minutes, 28 minutes, 30 minutes, etc.), then carry out the second color fixing and heat preservation at a temperature of 50 to 65°C (for example, it can be 50°C, 55°C, 60°C, 65°C, etc.) for 15-20 minutes (for example, it can be 15 minutes, 16 minutes, 17 minutes, 18 minutes, 20 minutes, etc.), and then drain the liquid, and wash the cloth thoroughly without floating color before discharging.

[0038] In the present invention, the high-fastness color fixing agent exemplarily includes Demei high-fastness color fixing agent DM2539.

[0039] In the present invention, in view of the fact that nylon-spandex fabrics in the prior art cannot be dyed, especially when dyed in dark colors, and the one-time color fixing method still has the problem that the color fastness of nylon-spandex fabrics to washing is generally not high, a stepped two-stage color fixing method is adopted to facilitate obtaining a fabric with excellent texture and high saturation color fastness of 4-5 levels.

[0040] Preferably, the temperature of the medium-dark color high fastness treatment in step S2 is 98-105°C, for example, it can be 98°C, 100°C, 102°C, 105°C, etc.; the time is 20-25min, for example, it can be 20min, 21min, 22min, 23min, 25min, etc.

[0041] Preferably, the medium to dark color high fastness treatment in step S2 also includes a drying treatment.

[0042] Preferably, the drying treatment temperature is 160-170°C, for example, 160°C, 162°C, 165°C, 168°C, 170°C, etc.; the speed is 50-60m / min, for example, 50m / min, 52m / min, 55m / min, 58m / min, 60m / min, etc.

[0043] Preferably, the waterproof setting treatment process in step S2 includes adding a bio-based fluorine-free waterproofing agent, the vehicle speed is 40-50 m / min, for example, it can be 40 m / min, 42 m / min, 45 m / min, 48 m / min, 50 m / min, etc.; the temperature is 160-170°C, for example, it can be 160°C, 162°C, 165°C, 168°C, 170°C, etc.

[0044] Preferably, based on the total mass of the working fluid for the waterproof setting treatment as 100%, the mass percentage of the bio-based fluorine-free waterproofing agent is 3.5-7%, for example, it can be 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, etc.

[0045] Preferably, the bio-based fluorine-free waterproofing agent includes DuPont Zelan R3 fluorine-free waterproofing agent, which can effectively resist rain and snow as well as liquid stains such as daily soy sauce and fruit juice.

[0046] In a second aspect, the present invention provides a bio-based four-way stretch anti-fouling fabric, wherein the bio-based four-way stretch anti-fouling fabric is prepared by the process for preparing the bio-based four-way stretch anti-fouling fabric according to the first aspect.

[0047] In a third aspect, the present invention provides a clothing fabric, wherein the clothing fabric comprises the bio-based four-way stretch anti-fouling fabric according to the second aspect.

[0048] Compared with the prior art, the present invention has the following beneficial effects:

[0049] The invention provides a process for preparing a bio-based four-way stretch anti-fouling fabric. For the bio-based nylon-spandex grey cloth, the invention improves the cold-batch desizing effect and the hair effect by reasonably regulating the specific steps of the cold-batch desizing pre-treatment and the composition of the working liquid thereof; at the same time, the mechanical force in the dyeing and fixing treatment process is utilized to enable the yarn to be fully opened, thereby reducing the stress between the yarns and improving the color fastness of the fabric, finally forming a good soft and glutinous feel, excellent color saturation and maintaining good breaking strength and resilience, and being suitable for use in the fields of outdoor sportswear and down jackets. DETAILED DESCRIPTION

[0050] The technical solution of the present invention is further described below by specific implementation methods. It should be understood by those skilled in the art that the embodiments are only used to help understand the present invention and should not be regarded as specific limitations of the present invention.

[0051] Example 1

[0052] This embodiment provides a bio-based four-way stretch anti-fouling fabric and a preparation process thereof, which comprises the following steps:

[0053] S1. Bio-based nylon 510 and corn bio-based spandex yarn are cross-twisted and coated in a mass ratio of 85:15, and a constant tension high-quality weaving is performed to obtain a bio-based nylon-spandex fabric;

[0054] S2. The bio-based nylon-spandex fabric obtained in step S1 is subjected to tension-free cold stacking treatment and in-cylinder refining and desizing treatment in sequence, wherein the tension-free cold stacking treatment comprises: firstly, the bio-based nylon-spandex fabric obtained in step S1 is subjected to elastic loose unwinding treatment, and then fully subjected to steam humidification treatment at 120° C., and then subjected to degreasing and tension-free loose stacking treatment in a liquid alkali solution tank at 25° C. for 24 hours, wherein the composition of the working solution in the tension-free cold stacking treatment comprises: 4% liquid alkali, 7g / L Sunmorl refining agent SUNMORL WX-8600 and 4g / L Zhuangjie spandex special degreasing agent ZJ-RH48;

[0055] The steps of the in-cylinder refining and desizing treatment include: desizing treatment at a temperature of 85°C and a speed of 30m / min, adding the following additives in sequence according to the amount of water: adding 3g / L of phosphorus-free organic chelating agent at a uniform speed within 7min, adding 18g / L of liquid alkali at a uniform speed within 7min, adding 5g / L of refining agent SUNMORL WX-8600 at a uniform speed within 10min, and then adding 3g / L of Meigao desizing agent M1011 and 4g / L of ZJ-RH48 degreasing agent; then performing pre-setting treatment at 192°C and a cloth speed of 35m / min, wherein the anti-yellowing agent CF-2 is 2g / L in the working solution;

[0056] The pre-shaped fabric is overflow dyed, and the temperature-raising and heat-keeping coloring curve is set and selected. First, an acid leveling agent aqueous solution with a mass concentration of 1% is added, and the addition is started at 40°C for 3 minutes. Then, a weak acid dye dedicated to bio-based is added, and glacial acetic acid is added according to the hue. The pH value of the system is adjusted to 4, and then the temperature is numerically controlled to 95°C at a rate of 1.5°C / min, and the temperature is kept for 38 minutes. Before leaving the cylinder, the color block is taken to judge and check the color. After the color is confirmed, the temperature is lowered and the liquid is drained, and water is added for washing 3 times;

[0057] After dyeing, a color fixing and washing treatment is carried out, which specifically includes adding the following reagents in order according to the amount of water: 3g / L of Demei high-fastness color fixing agent DM2539 and 1g / L of glacial acetic acid, adjusting the pH value of the system to 5, firstly carrying out the first color fixing and heat preservation at a temperature of 80°C for 25 minutes, and then carrying out the second color fixing and heat preservation at 65°C for 20 minutes, and then draining the liquid, and fully washing the cloth in a machine until there is no floating color;

[0058] After the color fixing and washing treatment, a medium to dark color high fastness treatment is carried out, specifically including: the temperature of the medium to dark color high fastness treatment is 100°C, the time is 22 minutes, the temperature of the drying treatment of the semi-finished product after dehydration is 160°C, the speed is 50m / min, and the setting value of the machine overfeed is 12%; finally, 4% of the total mass of the working liquid of the waterproof setting treatment is added with DuPont Zelan R3 fluorine-free waterproofing agent for waterproof setting treatment, the vehicle speed is 45m / min, and the temperature is 165°C.

[0059] The bio-based four-way stretch anti-fouling fabric obtained in this embodiment has good pores formed therein, and has high breaking strength and good elasticity, and its waterproof grade reaches level 4.

[0060] Example 2

[0061] This embodiment provides a bio-based four-way stretch anti-fouling fabric and a preparation process thereof, which comprises the following steps:

[0062] S1. Bio-based nylon 510 and corn bio-based spandex yarn are cross-twisted and coated in a mass ratio of 85:15, and a constant tension high-quality weaving is performed to obtain a bio-based nylon-spandex fabric;

[0063] S2. The bio-based nylon-spandex fabric obtained in step S1 is subjected to tension-free cold stacking treatment and in-cylinder refining and desizing treatment in sequence, wherein the steps of the tension-free cold stacking treatment include: firstly, the bio-based nylon-spandex fabric obtained in step S1 is subjected to elastic loose cloth unwinding treatment, and then fully subjected to steam humidification treatment at 110° C., and then subjected to degreasing and tension-free loose stacking treatment in a liquid alkali solution tank at 20° C. for 12 hours, wherein the composition of the working solution in the tension-free cold stacking treatment includes: 2% liquid alkali, 5g / L Sunmorl refining agent SUNMORL WX-8600 and 3g / L Zhuangjie spandex special degreasing agent ZJ-RH48;

[0064] The steps of the in-cylinder refining and desizing treatment include: desizing treatment at a temperature of 90°C and a speed of 25m / min, adding the following additives in sequence according to the amount of water: adding 4g / L of phosphorus-free organic chelating agent at a uniform speed within 10min, adding 15g / L of liquid alkali at a uniform speed within 7min, adding 3g / L of refining agent SUNMORL WX-8600 at a uniform speed within 10min, and then adding 2g / L of Meigao desizing agent M1011 and 3g / L of ZJ-RH48 degreasing agent; then performing pre-setting treatment at 190°C and a cloth speed of 30m / min, wherein the anti-yellowing agent CF-2 is 2g / L in the working liquid;

[0065] The pre-shaped fabric is warp-dyed, and the temperature-raising and heat-keeping coloring curve is set. First, an acidic leveling agent aqueous solution with a mass concentration of 1.5% is added, and the addition is started at 40°C for 4 minutes. Then, a weak acid dye dedicated to bio-based dyes is added, and glacial acetic acid is added according to the hue. The pH value of the system is adjusted to 4, and then the temperature is numerically controlled to 100°C at a rate of 1.5°C / min, and the temperature is kept for 45 minutes. Before leaving the cylinder, the color block is taken at least 5 meters away from the joint to determine and check the color. After the color is confirmed, the temperature is lowered and the liquid is drained, and water is added for washing 3 times;

[0066] After dyeing, a color fixing and washing treatment is carried out, which specifically includes adding the following reagents in order according to the amount of water: 3g / L of Demei high-fastness color fixing agent DM2539 and 1g / L of glacial acetic acid, adjusting the pH value of the system to 5, firstly carrying out the first color fixing and heat preservation at a temperature of 75°C for 20 minutes, and then carrying out the second color fixing and heat preservation at 55°C for 15 minutes, and then draining the liquid, and fully washing the cloth in a machine until there is no floating color;

[0067] After the color fixing and washing treatment, a medium-dark color high fastness treatment is carried out, specifically including: the temperature of the medium-dark color high fastness treatment is 98°C, the time is 20 minutes, the temperature of the drying treatment of the semi-finished product after dehydration is 165°C, the speed is 55m / min, and the setting value of the machine overfeed is 12%; finally, 3.5% of the total mass of the working liquid for the waterproof setting treatment is added with DuPont Zelan R3 fluorine-free waterproofing agent for waterproof setting treatment, the speed is 40m / min, the temperature is 160°C, and overfeeding is used to control the warp washing and ironing shrinkage to at least within ±3%.

[0068] The bio-based four-way stretch anti-fouling fabric obtained in this embodiment has better flatness and a smooth surface. The elasticity is slightly worse than that in Example 1, and the width is slightly wider by 2-3 cm. In particular, the warp yarn is easily stretched during the dyeing process, and sensitive colors occasionally have left-middle-right and front-middle-back color differences. The anti-fouling and waterproof level is above 4 and is not affected.

[0069] Example 3

[0070] This embodiment provides a bio-based four-way stretch anti-fouling fabric and a preparation process thereof, which comprises the following steps:

[0071] S1. Bio-based nylon 510 and corn bio-based spandex yarn are cross-twisted and coated in a mass ratio of 86:14, and a constant tension high-quality weaving is performed to obtain a bio-based nylon-spandex fabric;

[0072] S2. The bio-based nylon-spandex fabric obtained in step S1 is subjected to tension-free cold stacking treatment and in-cylinder refining and desizing treatment in sequence, wherein the steps of the tension-free cold stacking treatment include: firstly, the bio-based nylon-spandex fabric obtained in step S1 is subjected to elastic loose unwinding treatment, and then fully subjected to steam humidification treatment at 130° C., and then subjected to degreasing and tension-free loose stacking treatment in a liquid alkali solution tank at 35° C. for 72 hours, wherein the composition of the working solution in the tension-free cold stacking treatment includes: 6% liquid alkali, 10 g / L Sunmorl refining agent SUNMORL WX-8600 and 5 g / L Zhuangjie spandex special degreasing agent ZJ-RH48;

[0073] The steps of the in-cylinder refining and desizing treatment include: desizing treatment at a temperature of 90°C and a speed of 30m / min, adding the following additives in sequence according to the amount of water: adding 4g / L of phosphorus-free organic chelating agent at a uniform speed within 10min, adding 20g / L of liquid alkali at a uniform speed within 10min, adding 8g / L of refining agent SUNMORL WX-8600 at a uniform speed within 10min, and then adding 5g / L of Meigao desizing agent M1011 and 5g / L of ZJ-RH48 degreasing agent; then performing pre-setting treatment at 195°C and a cloth speed of 40m / min, wherein the anti-yellowing agent CF-2 is 4g / L in the working liquid;

[0074] The pre-shaped fabric is overflow dyed, and the temperature-raising and heat-keeping coloring curve is set and selected. First, an acidic leveling agent aqueous solution with a mass concentration of 2% is added, and the addition is started at 45°C for 5 minutes. Then, a weak acid dye dedicated to bio-based is added, and glacial acetic acid is added according to the hue. The pH value of the system is adjusted to 4, and then the temperature is numerically controlled to 105°C at a rate of 2°C / min, and the temperature is kept for 45 minutes. Before leaving the cylinder, the color block is taken to judge and check the color. After the color is confirmed, the temperature is lowered and the liquid is drained, and water is added for washing 3 times;

[0075] After dyeing, a color fixing and washing treatment is carried out, which specifically includes adding the following reagents in order according to the amount of water: 4g / L of Demei high-fastness color fixing agent DM2539 and 2g / L of glacial acetic acid, adjusting the pH value of the system to 5, firstly carrying out the first color fixing and heat preservation at a temperature of 80°C for 30 minutes, and then carrying out the second color fixing and heat preservation at 65°C for 20 minutes, and then draining the liquid, and fully washing the cloth in a machine until there is no floating color;

[0076] After the color fixing and washing treatment, a medium to dark color high fastness treatment is carried out, specifically including: the temperature of the medium to dark color high fastness treatment is 105°C, the time is 25 minutes, the temperature of the drying treatment of the semi-finished product after dehydration is 170°C, the speed is 60m / min, and the setting value of the machine overfeed is 12%; finally, 6% of the total mass of the working liquid of the waterproof setting treatment is added with DuPont Zelan R3 fluorine-free waterproofing agent for waterproof setting treatment, the vehicle speed is 50m / min, and the temperature is 170°C.

[0077] Example 4

[0078] The difference between this embodiment and embodiment 1 is that the step of tension-free cold stacking treatment includes: directly degreasing and tension-free loose stacking treatment of the bio-based nylon-spandex grey cloth obtained in step S1 in a liquid alkali solution tank at 25°C for 24 hours, wherein the composition of the working liquid in the tension-free cold stacking treatment includes: 4% liquid alkali, 7g / L Sunmorl refining agent WX-8600 and 4g / L Zhuangjie spandex special degreasing agent ZJ-RH48, without elastic loose cloth unwinding treatment and sufficient steam humidification treatment at 120°C, and the rest is the same as embodiment 1.

[0079] Example 5

[0080] The difference between this embodiment and embodiment 1 is that in the step of in-cylinder refining and desizing treatment, the ZJ-RH48 deoiling agent is replaced by a TF-115C deoiling agent of equal concentration, and the rest is the same as embodiment 1.

[0081] Example 6

[0082] The difference between this embodiment and embodiment 1 is that the process of color fixing and washing treatment includes: color fixing and heat preservation at a temperature of 80°C for 45 minutes, followed by drainage, and the cloth is discharged after being fully machine washed and completely free of floating colors. The rest is the same as embodiment 1.

[0083] Comparative Example 1

[0084] The difference between this comparative example and Example 1 is that the bio-based nylon 510 is replaced with nylon 66 resin of equal mass, and the rest is the same as Example 1.

[0085] Comparative Example 2

[0086] The difference between this comparative example and Example 1 is that the corn bio-based spandex is replaced with ordinary spandex of equal mass, and the rest is the same as Example 1.

[0087] Test conditions

[0088] The bio-based four-way stretch anti-fouling fabrics provided in Examples 1 to 6 and Comparative Examples 1 to 2 were tested, and the test method was as follows:

[0089] (1) Elastic elongation: tested in accordance with GB / T 3923;

[0090] (2) Water washing shrinkage: tested in accordance with GB / T 8629;

[0091] (3) Antifouling: Tested in accordance with the standard of FZ / T01118.

[0092] The test results are shown in Table 1:

[0093] Table 1

[0094]

[0095] As can be seen from Table 1, the present invention regulates the preparation process and parameters of the bio-based four-way stretch anti-fouling fabric, as well as the types and contents of the components used, so that not only the cold stack desizing effect and the hair effect are improved, but also the mechanical force in the dyeing and fixing process is utilized to fully open the yarn, thereby reducing the stress between the yarns and improving the color fastness of the fabric, ultimately forming a good soft and glutinous feel, excellent color saturation, and maintaining good breaking strength and resilience, and is suitable for use in outdoor sportswear, down jackets and other fields.

[0096] The applicant declares that the present invention illustrates the process method of the present invention through the above-mentioned embodiments, but the present invention is not limited to the above-mentioned process steps, that is, it does not mean that the present invention must rely on the above-mentioned process steps to be implemented. Those skilled in the art should understand that any improvement of the present invention, equivalent replacement of the raw materials selected by the present invention, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

Claims

1. A process for preparing a bio-based four-sided stretch anti-fouling fabric, characterized in that: The process comprises the following steps: S1. The nylon bio-based fiber and the corn bio-based spandex yarn are warped and woven to obtain a bio-based nylon-spandex fabric; S2. The bio-based nylon-spandex fabric obtained in step S1 is sequentially subjected to cold-batch desizing pre-treatment, dyeing and fixing treatment, medium-dark color high fastness treatment and waterproof setting treatment.

2. The process according to claim 1, characterized in that The nylon bio-based fiber in step S1 includes bio-based nylon 510; Preferably, the mass ratio of the nylon bio-based fiber to the corn bio-based spandex yarn in step S1 is (82-87):(13-18), preferably (85-86):(14-15).

3. The process according to claim 1 or 2, characterized in that The cold stacking and desizing pre-treatment in step S2 includes tension-free cold stacking treatment and in-cylinder refining and desizing treatment in sequence.

4. The process according to claim 3, characterized in that The tension-free cold stacking treatment step comprises: firstly subjecting the bio-based nylon-spandex fabric obtained in step S1 to an elastic loose unwinding treatment, and then subjecting the bio-based nylon-spandex fabric to a steam humidification treatment, and then subjecting the bio-based nylon-spandex fabric to a degreasing and tension-free loose stacking treatment in sequence; Preferably, the temperature of the steam humidification treatment is 110-130°C; Preferably, the degreasing process comprises degreasing in a liquid alkali solution; Preferably, the degreasing temperature is 20 to 35°C; Preferably, the time of the tension-free loose composting treatment is 12 to 72 hours; Preferably, the composition of the working liquid in the tension-free cold stacking treatment includes: 2-6% liquid alkali, 5-10 g / L refining agent and 3-5 g / L degreasing agent; Preferably, the step of refining and desizing treatment in the cylinder comprises: performing desizing treatment at a temperature of 80°C to 90°C and a vehicle speed of 25m / min to 30m / min, and adding the following additives in sequence according to the amount of water: adding 1 to 4g / L of a phosphorus-free organic chelating agent within 5min to 10min, adding 15 to 20g / L of liquid alkali within 5min to 10min, adding 3 to 8g / L of a refining agent within 10min, and then adding 2 to 5g / L of a desizing agent and 3 to 5g / L of a degreasing agent; Preferably, the raw material of the phosphorus-free organic chelating agent includes a combination of sodium aminotriacetate, magnesium salt and copper salt; Preferably, the refining agent is a low-temperature refining agent composed of a surfactant and a low-temperature hydrogen peroxide activator complex; Preferably, the desizing agent comprises a low-foaming desizing agent; Preferably, the degreasing agent comprises a non-ionic spandex degreasing agent.

5. The process according to any one of claims 1 to 4, characterized in that The cold stack desizing pre-treatment in step S2 also includes a pre-forming treatment; Preferably, the temperature of the pre-setting treatment is 190-195°C, and the fabric speed is 30-40 m / min; Preferably, the working solution in the pre-setting treatment includes 1.5-4 g / L of an anti-yellowing agent.

6. The process according to any one of claims 1 to 5, characterized in that The dyeing method in step S2 is overflow dyeing or warp dyeing; Preferably, the dyeing process in step S2 includes first adding an acid leveling agent solution at 35-45°C, running for 2-5 minutes, then adding a weak acid dye and glacial acetic acid, adjusting the pH value of the system to 4, and then heating to 95-105°C at a rate of 1-2°C / min, keeping the temperature for 30-45 minutes, cooling down, draining, and washing with water 3 times; Preferably, the solvent of the acidic leveling agent solution is water; Preferably, the mass concentration of the acid leveling agent solution is 1-2%; Preferably, the dyeing in step S2 further includes a color fixing and washing treatment; Preferably, the process of the color fixing and washing treatment is to add the following reagents in sequence according to the amount of water: 2-4 g / L of high fastness color fixing agent, 0.5-2 g / L of glacial acetic acid, adjust the pH value of the system to 5, first carry out the first color fixing and heat preservation at a temperature of 75-80°C for 20-30 minutes, then carry out the second color fixing and heat preservation at a temperature of 50-65°C for 15-20 minutes, and then drain the liquid and take out the cloth after machine washing.

7. The process according to any one of claims 1 to 6, characterized in that The temperature of the medium-dark color high fastness treatment in step S2 is 98-105° C. and the time is 20-25 min; Preferably, the medium-dark color high fastness treatment in step S2 further includes a drying treatment; Preferably, the drying process is carried out at a temperature of 160-170° C. and a speed of 50-60 m / min.

8. The process according to any one of claims 1 to 7, characterized in that The waterproof setting treatment process in step S2 includes adding a bio-based fluorine-free waterproofing agent, a vehicle speed of 40 to 50 m / min, and a temperature of 160 to 170° C.; Preferably, based on the total mass of the working solution for waterproof setting treatment being 100%, the mass percentage of the bio-based fluorine-free waterproofing agent is 3.5-7%; Preferably, the bio-based fluorine-free waterproofing agent includes DuPont Zelan R3 fluorine-free waterproofing agent.

9. A bio-based four-way stretch anti-fouling fabric, characterized in that: The bio-based four-way stretch anti-fouling fabric is prepared by the process for preparing the bio-based four-way stretch anti-fouling fabric according to any one of claims 1-8.

10. A clothing fabric, characterized in that: The clothing fabric comprises the bio-based four-way stretch anti-fouling fabric according to claim 9.

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