A bio-based tetrahedral elastic anti-fouling fabric, a preparation process thereof and a garment fabric

Abstract

The application provides a bio-based four-way stretch anti-pollution fabric, a preparation process thereof and a garment fabric. The process comprises the following steps: first, nylon bio-based fibers and corn bio-based spandex yarns are subjected to threading and weaving to obtain a bio-based poplin gray cloth; and then the bio-based poplin gray cloth is subjected to cold pile desizing pretreatment, dyeing and fixing treatment, medium-dark color high fastness treatment and waterproof setting treatment in sequence. The bio-based four-way stretch anti-pollution fabric prepared by using plant source materials completely has the advantages of pure natural ice silk and soft touch, 360-degree super elastic stretch performance, unique anti-pilling and fast cotton absorption, and good fluorine-free durable waterproof performance, and is very suitable for use in the field of science and technology garment fabric.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of fabric materials, and particularly relates to a bio-based four-way stretch anti-pollution fabric, a preparation process thereof and a garment fabric. BACKGROUND

[0002] Bio-based fabrics, as a new environmentally friendly material, have developed thanks to technological progress and increased environmental awareness. This type of fabric is made from plants or microorganisms through biotechnology or chemical methods, and has good renewability and biodegradability, thus having obvious advantages in sustainable development and environmental protection. With the continuous progress of technology, the types and uses of bio-based fabrics are also expanding, from the original cellulose fibers to various bio-based fibers such as polylactic acid fibers, marine bio-based fibers, etc. These fabrics are not only environmentally friendly, but also comparable in performance to traditional chemical fibers, and even better in some aspects. Designers are also trying to use various crop waste to develop fabrics, such as using genetically modified technology to cultivate crops with specific properties as a source of fabric. These efforts are pushing bio-based fabrics towards 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 progress 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 the field, there is an urgent need to further improve the water resistance, high-efficiency stain resistance, and elasticity of bio-based fabrics to expand their applications in clothing, home textiles, and industrial textiles. SUMMARY

[0005] In view of the deficiencies of the prior art, the purpose of the present application is to provide a bio-based four-way stretch anti-pollution fabric, a preparation process thereof and a garment fabric. The bio-based four-way stretch anti-pollution fabric made entirely from plant source materials has the advantages of pure natural ice silk and soft touch, 360° super stretch performance, unique anti-pilling and fast cotton absorption, and good fluorine-free durable waterproof performance, and is therefore very suitable for use in the field of technical clothing fabrics.

[0006] To achieve this purpose, the present application adopts the following technical solutions:

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

[0008] S1, nylon bio-based fibers and corn bio-based spandex yarns are subjected to threading and weaving to obtain a bio-based brocade fabric;

[0009] S2, the bio-based satin gray cloth obtained in step S1 is subjected to cold pile desizing pretreatment, dyeing and fixing treatment, medium-dark color high fastness treatment and waterproof setting treatment in sequence.

[0010] For the bio-based satin gray cloth, the present application improves the cold pile desizing effect and capillary effect by reasonably regulating the specific steps of cold pile desizing pretreatment and the composition of the working solution. At the same time, the mechanical force in the dyeing and fixing treatment process can fully open the yarn, thereby reducing the stress between the yarns and improving the color fastness of the fabric. Finally, a good soft and sticky hand feeling, excellent color saturation, good breaking strength and good resilience are formed, which is suitable for outdoor sports clothes and down jackets and other fields.

[0011] Preferably, the nylon bio-based fiber in step S1 comprises 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 pile desizing pretreatment in step S2 comprises tensionless cold pile treatment and in-cylinder refining desizing treatment in sequence.

[0014] Preferably, the tensionless cold pile treatment comprises first performing elastic cloth unwinding treatment on the bio-based satin gray cloth obtained in step S1, then performing steam humidification treatment, and after the end, sequentially performing oil removal and tensionless loose pile leaching treatment.

[0015] For the material characteristics of nylon bio-based fiber and corn bio-based spandex being easy to fatigue, compared with the ordinary non-elastic nylon cold pile process, the present application adopts the method of pre-steam humidification cloth to release the inherent stress of the originally tight elastic cloth.

[0016] Preferably, the temperature of the steam humidification treatment is 110-130℃, for example, it can be 110℃, 115℃, 120℃, 125℃, 130℃, etc.

[0017] Preferably, the oil removal process comprises oil removal treatment in a liquid alkali solution, so as to realize complete relaxation and foaming of the fabric.

[0018] Preferably, the temperature of the oil removal is 20-35℃, for example, it can be 20℃, 25℃, 30℃, 35℃, etc.

[0019] Preferably, the time of the tensionless loose stacking treatment is 12-72h, for example, 12h, 15h, 20h, 30h, 40h, 50h, 60h, 70h, 72h, etc.

[0020] Preferably, the composition of the working liquid in the tensionless cold stacking includes 2-6% liquid alkali, 5-10g / L refining agent and 3-5g / L oil removal agent.

[0021] In the present application, the mass concentration of the liquid alkali is 2-6%, for example, 2%, 3%, 4%, 5%, 6%, etc.

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

[0023] In the present application, the mass concentration of the oil removal agent is 3-5g / L, for example, 3g / L, 3.5g / L, 4g / L, 4.5g / L, 5g / L, etc. The oil removal agent exemplarily includes Zhuojie Nylon Special Oil Removal Agent ZJ-RH48.

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

[0025] Preferably, the raw material of the phosphorus-free organic chelating agent comprises a combination of sodium amino triacetate (NTA), magnesium salt and copper salt. The chelating agent prepared by using the phosphorus-free raw material can effectively control the content of metal ions in the fabric and the water used for dyeing, thereby indirectly controlling the decomposition speed of hydrogen peroxide and preventing excessive damage to the fabric, so as to further promote the removal of impurities from the surface of the fabric.

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

[0027] Preferably, the desizing agent comprises a low-foaming desizing agent. The desizing agent exemplarily comprises Megh desizing agent M1011. Compared with the conventional desizing agent, the desizing agent provided by the application can penetrate faster and improve the fabric capillary effect and desizing effect.

[0028] Preferably, the oil removing agent comprises a non-ionic spandex oil removing agent. The oil removing agent illustratively comprises ZJ-RH48 oil removing agent. The non-ionic spandex oil removing agent provided by the present application is capable of having a protective effect on bio-based satin gray fabric in an alkaline environment during desizing, while also having the effects of assisting in desizing, preventing dye aggregation, and ensuring uniform and bright dyeing.

[0029] Preferably, the cold pad-batch desizing pretreatment in step S2 further comprises a pre-setting 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., and the cloth speed is 30-40 m / min, for example, 30 m / min, 32 m / min, 35 m / min, 38 m / min, 40 m / min, etc. By adjusting the parameters of the pre-setting treatment, the present application avoids the problem of excessive shrinkage of bio-based satin gray fabric after washing or ironing.

[0031] Preferably, the working solution in the pre-setting treatment comprises an anti-yellowing agent at a concentration of 1.5-4 g / L, 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 beam dyeing.

[0033] Preferably, the dyeing process in step S2 comprises 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 2-5 min (for example, 2 min, 3 min, 4 min, 5 min, etc.), then adding weak acid dyes and glacial acetic acid to adjust the pH of the system to 4, and then increasing the temperature 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.), maintaining the temperature for 30-45 min (for example, 30 min, 35 min, 40 min, 45 min, etc.), draining the liquid after cooling, and washing three times.

[0034] Preferably, the solvent of the acid 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 process in step S2 further comprises a fixation and washing treatment after dyeing.

[0037] Preferably, the process of the fixing and washing treatment is as follows: adding the following reagents in sequence according to the water amount: high-fastness fixing agent 2-4 g / L (for example, it can be 2 g / L, 2.5 g / L, 3 g / L, 3.5 g / L, 4 g / L, etc.), glacial acetic acid 0.5-2 g / L (for example, it can be 0.5 g / L, 1 g / L, 1.5 g / L, 2 g / L, etc.), adjusting the pH value of the system to 5, first performing the first fixing at a temperature of 75-80℃ (for example, it can be 75℃, 78℃, 80℃, etc.) for 20-30 min (for example, it can be 20 min, 22 min, 25 min, 28 min, 30 min, etc.), then performing the second fixing at a temperature of 50-65℃ (for example, it can be 50℃, 55℃, 60℃, 65℃, etc.) for 15-20 min (for example, it can be 15 min, 16 min, 17 min, 18 min, 20 min, etc.), and then discharging the liquid, and taking out the fabric after washing and completely removing the floating color.

[0038] In the present application, the high-fastness fixing agent exemplarily comprises DeMei high-fastness fixing agent DM2539.

[0039] In the present application, in view of the fact that the existing technology cannot color the brocade and nylon fabric, especially when dyeing dark color, the method of one-time fixing still has the problem that the washing color fastness of the brocade and nylon fabric is generally not high, and the two-stage fixing method is adopted to facilitate obtaining the fabric with excellent 4-5 grade high-saturation color fastness.

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

[0041] Preferably, the high-fastness treatment of the medium and dark color in step S2 further comprises a drying treatment.

[0042] Preferably, the temperature of the drying treatment is 160-170℃, for example, it can be 160℃, 162℃, 165℃, 168℃, 170℃, etc.; and the speed is 50-60 m / min, for example, it can be 50 m / min, 52 m / min, 55 m / min, 58 m / min, 60 m / min, etc.

[0043] Preferably, the process of the waterproof finishing treatment in step S2 comprises adding a bio-based fluorine-free waterproof 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℃, for example, it can be 160℃, 162℃, 165℃, 168℃, 170℃, etc.

[0044] Preferably, the mass percentage content of the bio-based fluorine-free waterproof agent is 3.5-7% based on 100% of the total mass of the working fluid of the waterproof finishing treatment, 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 waterproof agent comprises a fluorine-free waterproof agent of DuPont Zelan R3, which can effectively resist rain and snow and liquid contamination such as daily soy sauce and fruit juice.

[0046] In a second aspect, the present application provides a bio-based four-way stretch stain-resistant fabric, which is prepared by the process for preparing a bio-based four-way stretch stain-resistant fabric according to the first aspect.

[0047] In a third aspect, the present application provides a garment fabric, which comprises the bio-based four-way stretch stain-resistant fabric according to the second aspect.

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

[0049] The present application provides a process for preparing a bio-based four-way stretch stain-resistant fabric, which improves the cold pad-batch desizing effect and capillary effect by reasonably regulating the specific steps of cold pad-batch desizing pretreatment and the composition of the working fluid thereof. At the same time, the mechanical force in the dyeing and fixing process makes the yarn fully open, thereby reducing the stress between the yarns and improving the color fastness of the fabric. Finally, a good soft and sticky hand feeling, excellent color saturation, good breaking strength and good elasticity are obtained, which is suitable for outdoor sports clothes and down jackets and other fields. DETAILED DESCRIPTION

[0050] The technical solutions of the present application will be further described through specific embodiments. Those skilled in the art should understand that the embodiments are only used to help understand the present application and should not be regarded as a specific limitation on the present application.

[0051] Embodiment 1

[0052] The present embodiment provides a bio-based four-way stretch stain-resistant fabric and a preparation process thereof, which comprises the following steps:

[0053] S1. The bio-based nylon 510 and corn bio-based spandex yarns are applied with cross-twist covering and constant tension high-quality weaving at a mass ratio of 85:15 to obtain bio-based satin gray cloth;

[0054] S2. The bio-based satin gray cloth obtained in step S1 is subjected to tensionless cold stacking treatment and in-cylinder refining desizing treatment in sequence. The tensionless cold stacking treatment step includes: first, the bio-based satin gray cloth obtained in step S1 is subjected to elastic cloth unwinding treatment, then steam humidification treatment is carried out at 120°C, and after the end, oil removal and tensionless loose stacking treatment are carried out in a liquid alkali solution tank at 25°C for 24h. The composition of the working liquid in the tensionless cold stacking treatment includes: 4% liquid alkali, 7g / L Rihua refining agent SUNMORL WX-8600 and 4g / L Zhuo Jie spandex special oil removal agent ZJ-RH48;

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

[0056] The fabric after pre-setting is subjected to overflow dyeing, and the temperature raising and holding color curve is set. First, 1% of an acid leveling agent aqueous solution is added, and the addition starts at 40°C, with a time length of 3min. Then, bio-based special weak acid dyes are added, and glacial acetic acid is added according to the hue to adjust the pH value of the system to 4. Then, the temperature is raised to 95°C at a rate of 1.5°C / min, and the temperature is maintained for 38min. Before discharging, the color block is taken to check the color. After confirming the color, the temperature is lowered to discharge the liquid, and the fabric is washed with water for 3 times;

[0057] After the dyeing treatment, the fixing and washing treatment is carried out, which specifically includes adding the following reagents in sequence according to the water amount: 3g / L of De Meigao fastness fixing agent DM2539 and 1g / L of glacial acetic acid to adjust the pH value of the system to 5. First, the first fixing is carried out at a temperature of 80°C for 25min, and then the second fixing is carried out at 65°C for 20min. After that, the liquid is discharged, and the fabric is washed thoroughly without floating color;

[0058] After the fixing and washing treatment, a high color fastness treatment is performed, specifically including: the temperature of the high color fastness treatment is 100 DEG C, the time is 22 min, the drying treatment temperature of the semi-finished product after dewatering is 160 DEG C, the speed is 50 m / min, the setting value of the machine over-feeding is 12%; finally, a waterproof and setting treatment is performed by adding 4% of the total mass of the working fluid of the DuPont Zelan Zelan R3 fluorine-free waterproof agent, the speed is 45 m / min, and the temperature is 165 DEG C.

[0059] The bio-based four-way stretch anti-pollution fabric obtained in the embodiment has good solution holes, high breaking strength, good elasticity, and a waterproof level of 4.

[0060] Example 2

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

[0062] S1. Bio-based nylon 510 and corn bio-based spandex yarn are applied to cross-twist coating and constant tension high-product weaving in a mass ratio of 85:15 to obtain a bio-based brocade fabric;

[0063] S2. The bio-based brocade fabric obtained in step S1 is sequentially subjected to tensionless cold stacking treatment and cylinder refining desizing treatment, the tensionless cold stacking treatment includes: first, the bio-based brocade fabric obtained in step S1 is subjected to elastic cloth unwinding treatment, then steam humidification treatment is performed at 110 DEG C, and after the treatment, oil removal and tensionless loose stacking treatment are performed in a liquid alkali solution tank at 20 DEG C for 12 h, wherein the composition of the working fluid in the tensionless cold stacking treatment includes: 2% liquid alkali, 5 g / L of Rihua refining agent SUNMORL WX-8600, and 3 g / L of Zhuojie spandex special degreasing agent ZJ-RH48;

[0064] The cylinder refining desizing treatment includes: desizing treatment is performed at a temperature of 90 DEG C and a speed of 25 m / min, and the following auxiliaries are sequentially added according to the water amount: 4 g / L of phosphorus-free organic chelating agent is uniformly added within 10 min, 15 g / L of liquid alkali is uniformly added within 7 min, 3 g / L of refining agent SUNMORL WX-8600 is uniformly added within 10 min, 2 g / L of Meigao desizing agent M1011 and 3 g / L of ZJ-RH48 degreasing agent are further added; then, pre-setting treatment is performed at 190 DEG C and a cloth speed of 30 m / min, wherein the anti-yellowing agent CF-2 in the working fluid is 2 g / L;

[0065] The pre-shaped fabric is subjected to warp beam dyeing, and a temperature rising and holding color curve is set. First, an acid leveling agent aqueous solution with a mass concentration of 1.5% is added, and the addition starts at 40°C and lasts for 4 min. Then, a bio-based weak acid dye is added. Glacial acetic acid is added according to the hue to adjust the pH value of the system to 4. Then, the temperature is raised to 100°C at a rate of 1.5°C / min, and the system is held for 45 min. Before discharging the cylinder, color blocks are taken at a distance of at least 5 meters away from the joint to check the color. After the color is confirmed, the temperature is lowered, the liquid is discharged, and the fabric is washed with water for 3 times.

[0066] After the dyeing process is completed, a fixing and washing treatment is performed. Specifically, the following reagents are added in sequence according to the water amount: DeMeiGao fastness fixing agent DM2539 3g / L, glacial acetic acid 1g / L, the pH value of the system is adjusted to 5, the first fixing is performed at a temperature of 75°C for 20 min, then the second fixing is performed at 55°C for 15 min, and then the liquid is discharged. After thorough machine washing without floating color, the fabric is discharged.

[0067] After the fixing and washing treatment is completed, a high fastness treatment for medium and dark colors is performed. Specifically, the temperature of the high fastness treatment for medium and dark colors is 98°C, and the time is 20 min. After dehydration, the temperature of the drying treatment for the semi-finished product is 165°C, the speed is 55m / min, and the setting value of the machine overfeed is 12%. Finally, a waterproofing and setting treatment is performed using a total mass of 3.5% of DuPont Zelan ZelanR3 fluorine-free waterproofing agent, the speed is 40m / min, the temperature is 160°C, and the overfeed is controlled to achieve a water washing and ironing shrinkage rate of at least ±3%.

[0068] The bio-based four-way stretch stain-resistant fabric obtained in this example has good flatness and smooth fabric surface. The elasticity is slightly worse than that of Example 1, the width is slightly wider by 2-3 cm, and the sensitive color occasionally has left, middle, and right color difference phenomena. The stain and water resistance are 4 levels or above, and are not affected.

[0069] Example 3

[0070] The present embodiment provides a bio-based four-way stretch stain-resistant fabric and a preparation process thereof, which includes the following steps:

[0071] S1. Bio-based nylon 510 and corn bio-based spandex yarns are mixed in a mass ratio of 86:14, and are subjected to cross-twisted wrapping and constant tension high-quality weaving to obtain bio-based brocade fabric.

[0072] S2. The bio-based brocade gray fabric obtained in step S1 is subjected to tension-free cold piling and cylinder refining desizing treatment in sequence. The tension-free cold piling treatment comprises the following steps: first, the bio-based brocade gray fabric obtained in step S1 is subjected to elastic cloth unwinding treatment, and then is subjected to steam humidification treatment at 130℃. After the treatment, the fabric is subjected to oil removal and tension-free loose piling treatment in a liquid alkali solution tank at 35℃ for 72 hours. The composition of the working liquid in the tension-free cold piling treatment comprises 6% liquid alkali, 10 g / L of Rihua refining agent SUNMORL WX-8600, and 5 g / L of Zhuojie special oil removal agent for spandex ZJ-RH48.

[0073] The cylinder refining desizing treatment comprises the following steps: desizing treatment is performed at a temperature of 90℃ and a speed of 30 m / min. The following additives are added in sequence according to the water amount: 4 g / L of phosphorus-free organic chelating agent is added at a uniform speed within 10 min, 20 g / L of liquid alkali is added at a uniform speed within 10 min, 8 g / L of refining agent SUNMORL WX-8600 is added at a uniform speed within 10 min, 5 g / L of Meigao desizing agent M1011 and 5 g / L of ZJ-RH48 oil removal agent are added; and then, predetermined shaping treatment is performed at 195℃ and a cloth speed of 40 m / min, wherein 4 g / L of anti-yellowing agent CF-2 is contained in the working liquid.

[0074] After the predetermined shaping, the fabric is subjected to overflow dyeing. The temperature raising and holding coloration curve is set. First, 2% of an aqueous solution of acidic leveling agent is added, and the addition starts at 45℃ and lasts for 5 min. Then, bio-based special weak acid dyes are added. Glacial acetic acid is added according to the hue to adjust the pH value of the system to 4. Then, the temperature is raised to 105℃ at a rate of 2℃ / min, and the holding time is 45 min. Before the fabric is discharged, a color block is taken to check the color. After the color is confirmed, the temperature is lowered, the liquid is discharged, and the fabric is washed with water for 3 times.

[0075] After the dyeing treatment, fixing and washing treatment is performed. Specifically, the following reagents are added in sequence according to the water amount: 4 g / L of DeMeiGao fastness fixing agent DM2539 and 2 g / L of glacial acetic acid are added to adjust the pH value of the system to 5. First, the fixing is performed at a temperature of 80℃ for 30 min. Then, the fixing is performed at a temperature of 65℃ for 20 min. After that, the liquid is discharged, and the fabric is washed thoroughly without floating color.

[0076] After the fixing and washing treatment, high fastness treatment for medium and dark colors is performed. Specifically, the temperature of the high fastness treatment for medium and dark colors is 105℃, and the time is 25 min. After dehydration, the temperature of the drying treatment for the semi-finished product is 170℃, the speed is 60 m / min, and the setting value of the machine overfeed is 12%. Finally, 6% of DuPont Zelan ZelanR3 fluorine-free waterproof agent is added to the total mass of the working liquid of the waterproof and shaping treatment to perform waterproof and shaping treatment. The speed is 50 m / min, and the temperature is 170℃.

[0077] Example 4

[0078] The difference between this example and Example 1 is that the step of tensionless cold pile treatment includes directly carrying out oil removal and tensionless loose pile baking treatment of the bio-based nylon 510 fabric obtained in step S1 in a liquid alkali solution tank at 25℃ for 24h, wherein the composition of the working liquid in the tensionless cold pile treatment includes 4% liquid alkali, 7g / L Rongjie Ammonia Special Oil Removal Agent ZJ-RH48 and 4g / L Rongjie Ammonia Special Oil Removal Agent ZJ-RH48, without carrying out elastic loose fabric unwinding treatment and fully carrying out steam humidification treatment at 120℃, and the others are the same as in Example 1.

[0079] Example 5

[0080] The difference between this example and Example 1 is that in the step of cylinder refining desizing treatment, ZJ-RH48 oil removal agent is replaced by TF-115C oil removal agent with the same concentration, and the others are the same as in Example 1.

[0081] Example 6

[0082] The difference between this example and Example 1 is that the process of fixing and washing treatment includes fixing at a temperature of 80℃ for 45min, and then discharging liquid, and the fabric is taken out after full machine washing and no floating color, and the others are the same as in Example 1.

[0083] Comparative Example 1

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

[0085] Comparative Example 2

[0086] The difference between this comparative example and Example 1 is that the corn bio-based ammonia is replaced by ordinary ammonia with the same mass, and the others are the same as in Example 1.

[0087] Test conditions

[0088] The bio-based four-way stretch stain-resistant fabric provided in Examples 1 to 6 and Comparative Examples 1 to 2 is tested, and the test method is as follows:

[0089] (1) Elastic elongation: tested according to the standard of GB / T 3923;

[0090] (2) Washing shrinkage: tested according to the standard of GB / T 8629;

[0091] (3) Stain resistance: tested according to 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, by regulating the preparation process and parameters of the bio-based tetrahedral elastic anti-pollution fabric and the types and contents of the components used, not only the cold pile desizing effect and capillary effect are improved, but also the mechanical force in the dyeing and fixing process is used to fully open the yarns, thereby reducing the stress between the yarns and improving the color fastness of the fabric, finally forming a good soft and sticky hand feeling, excellent color saturation and good breaking strength and resilience, which is suitable for outdoor sports clothes and down jackets and the like.

[0096] The applicant declares that the process method of the present application is illustrated by the above examples, but the present application is not limited to the above process steps, that is, it does not mean that the present application must rely on the above process steps to be implemented. It should be understood by those skilled in the art that any improvement on the present application, equivalent replacement of the selected materials, addition of auxiliary ingredients, selection of specific methods, etc. fall within the scope of protection and disclosure of the present application.

Claims

1. A process for preparing a bio-based four-way stretch stain-resistant fabric, characterized in that, The process includes the following steps: S1. A bio-based nylon-based fiber and corn bio-based spandex yarn are warped and woven to obtain a bio-based nylon-spandex fabric. S2. The bio-based nylon-polyurethane fabric obtained in step S1 is subjected to cold desizing pretreatment, dyeing and color fixing treatment, medium-dark color fastness treatment and waterproof shaping treatment in sequence. The pretreatment for deslurry removal in step S2 includes, in sequence, tension-free cold stack treatment and in-cylinder refining deslurry treatment; The steps of the tensionless cold stacking process include: first, the bio-based nylon fabric obtained in step S1 is subjected to elastic loose unwinding treatment, and then steam humidification treatment is carried out at 110~130℃. After the treatment, degreasing and tensionless loose stacking treatment are carried out in sequence. The degreasing process includes degreasing treatment in a liquid alkaline solution; the degreasing temperature is 20~35℃. The tensionless loose-type refining treatment takes 12 to 72 hours; the working fluid in the tensionless cold refining treatment consists of 2 to 6% liquid alkali, 5 to 10 g / L refining agent, and 3 to 5 g / L degreasing agent. The in-cylinder refining and desizing process includes: desizing at a temperature of 80℃~90℃ and a speed of 25m / min~30m / min, and adding the following additives in sequence according to the water volume: adding 1~4g / L of phosphorus-free organic chelating agent within 5min~10min, adding 15~20g / L of liquid alkali within 5min~10min, adding 3~8g / L of refining agent within 10min, and then adding 2~5g / L of desizing agent and 3~5g / L of degreasing agent; The raw materials for the phosphorus-free organic chelating agent are sodium aminotriacetate, magnesium salt, and copper salt; The refining agent is a low-temperature refining agent composed of a surfactant and a low-temperature hydrogen peroxide activator complex. The desizing agent is a low-foaming desizing agent; The degreasing agent is a non-ionic agent for removing spandex oil. Step S2, after dyeing, also includes a color-fixing and washing process. The color-fixing and washing process involves adding the following reagents in sequence according to the amount of water: DM2539 high-fastness color-fixing agent 2~4g / L, glacial acetic acid 0.5~2g / L, adjusting the pH of the system to 5, first performing the first color-fixing and heat preservation at a temperature of 75~80℃ for 20~30min, then performing the second color-fixing and heat preservation at a temperature of 50~65℃ for 15~20min, and then draining the liquid, machine washing, and then outputting the fabric.

2. The process according to claim 1, characterized in that, The nylon bio-based fiber mentioned in step S1 is bio-based nylon 510; The mass ratio of the nylon bio-based fiber and the corn bio-based spandex yarn in step S1 is (82~87):(13~18).

3. The process according to claim 2, characterized in that, The mass ratio of the nylon bio-based fiber and the corn bio-based spandex yarn in step S1 is (85~86):(14~15).

4. The process according to claim 1, characterized in that, The pretreatment for cold reactor deslurry removal in step S2 also includes pre-forming treatment; The temperature of the pre-treatment is 190-195℃, and the weaving speed is 30-40m / min; The working solution in the predetermined treatment is an anti-yellowing agent of 1.5~4g / L.

5. The process according to claim 1, characterized in that, In step S2, the staining method is either overflow staining or transaxial staining; The dyeing process in step S2 includes adding an acidic leveling agent solution at 35~45℃ and running for 2~5 minutes, then adding a weakly acidic dye and glacial acetic acid to adjust the pH of the system to 4, then raising the temperature to 95~105℃ at a rate of 1~2℃ / min, keeping it at that temperature for 30~45 minutes, cooling down, draining the solution, and washing with water 3 times. The solvent for the acidic leveling agent solution is water; The mass concentration of the acidic leveling agent solution is 1-2%.

6. The process according to claim 1, characterized in that, The temperature for the medium-dark color high fastness treatment in step S2 is 98~105℃, and the time is 20~25min; The medium-dark color high fastness treatment described in step S2 also includes a drying process; The drying process is carried out at a temperature of 160–170°C and a speed of 50–60 m / min.

7. The process according to claim 1, characterized in that, The waterproofing and shaping process described in step S2 includes adding a bio-based fluorine-free waterproofing agent, a vehicle speed of 40-50 m / min, and a temperature of 160-170℃; Based on the total mass of the working solution for the waterproofing and shaping treatment being 100%, the mass percentage of the bio-based fluorine-free waterproofing agent is 3.5% to 7%. The bio-based fluorine-free waterproofing agent is DuPont Zelan R3, a fluorine-free waterproofing agent.

8. A bio-based four-way stretch stain-resistant fabric, characterized in that, The bio-based four-way stretch stain-resistant fabric is prepared by the process for preparing bio-based four-way stretch stain-resistant fabric according to any one of claims 1-7.

9. A garment fabric, characterized in that, The garment fabric includes the bio-based four-way stretch stain-resistant fabric according to claim 8.

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