Preparation technology and application of two-color fabric

Abstract

The present invention relates to the technical field of fabrics, and discloses a preparation process and application of a two-color fabric. The present invention uses cyanuric chloride, 2-(aminomethyl)-1,3-propylene glycol, 3,3'-imide dipropionitrile and the like as raw materials, and undergoes two substitution reactions to prepare intermediate 2, and utilizes the nitrile group contained in intermediate 2 to undergo hydrolysis reaction to obtain intermediate 3, and uses terephthalic acid, ethylene glycol and intermediate 3 as raw materials, and undergoes reaction to prepare hydrophilic modified polyester fiber, and finally uses hydrophilic modified polyester fiber as warp yarn and tencel as weft yarn, and undergoes alkali treatment, pre-shrinking, dyeing, and post-finishing process steps to weave the two-color fabric. The two-color fabric prepared by the present invention has good moisture absorption and air permeability and comfort.

Description

Technical Field

[0001] The invention relates to the technical field of fabrics, and in particular to a preparation process of a two-color fabric and application thereof. Background Art

[0002] With the rapid development of society and the increase in people's aesthetic needs, two-color fabrics have been widely used in people's lives and applied to various fields of people's daily life. Therefore, the research on two-color fabrics is also a hot topic in current research.

[0003] Polyester, also known as polyester fiber, is a synthetic fiber made from organic dibasic acids and diols through chemical polycondensation. It is widely used in the preparation of fabrics, automotive interiors, medical supplies, etc. Hydrophilic modified polyester fiber has excellent flame retardant, chemical resistance, high temperature resistance and other properties.

[0004] Tencel is a new type of viscose fiber. It is produced by solvent spinning technology. The amine oxide solvent used in the production is completely harmless to the human body, almost completely recyclable, can be reused, has no by-products, and has excellent air permeability, comfort and other properties.

[0005] The two are blended to produce a fabric with properties such as high strength, good breathability, warmth retention, and high temperature resistance.

[0006] For example, the patent application publication number is CN 109457482 A, which proposes a method for preparing a coffee carbon warm super soft trouser fabric and a super soft finishing agent thereof. The invention uses Tencel as the warp yarn, and the prepared fabric has the characteristics of comfort, skin-friendliness, and two-color properties, but does not improve the breathability, warmth retention, high temperature resistance and other properties of the fabric. Summary of the invention

[0007] 1. Technical issues to be resolved

[0008] In view of the shortcomings of the prior art, the present invention provides a preparation process and application of a two-color fabric. The fabric is prepared by using Tencel and hydrophilic modified polyester fibers as raw materials through weaving, alkali treatment, dyeing and other process steps, and has excellent comprehensive properties.

[0009] (II) Technical solution

[0010] A preparation process of a two-color fabric, the preparation process comprising:

[0011] (1) Using an air jet loom, warp yarns and weft yarns are woven to obtain a grey cloth.

[0012] (2) The obtained grey cloth is turned and hemmed, and then washed in 0.5-1 g / L soda ash, and then 30% acetic acid is added thereto to adjust the pH to 4-5, and then washed with deionized water to obtain an alkali-treated fabric.

[0013] (3) A rubber blanket shrinking machine is used for preshrinking. After the preshrinking is completed, the fabric is dehydrated, dried, and pre-shaped to obtain a pre-shrunk fabric.

[0014] (4) Add disperse dye, swelling aid, anti-precipitation agent and leveling agent to the pre-shrunk fabric, dye at 110-120° C. for 1-2 hours, take out and obtain the dyed fabric.

[0015] (5) Add softener and silicone oil to the dyed fabric, and perform finishing at 180-190° C. for 2-5 minutes. After finishing, take out and dry to obtain a two-color fabric.

[0016] Preferably, in step (1), the warp yarn is made of hydrophilic modified polyester fiber, and the weft yarn is made of tencel fiber.

[0017] Preferably, the weaving process is: the reed number is 110, the number of insertions per reed is 2, the warp and weft density on the machine is 218 threads / 10cm×210 threads / 10cm, the reed width on the machine is 200cm, and the total number of warps is 7000.

[0018] Preferably, in step (3), the pre-shrinking temperature is 100-120°C, the pre-forming temperature is 170-190°C, and the vehicle speed is 30-50 m / min.

[0019] Preferably, in step (4), the mass fraction of the swelling aid is 2-4 g / L, the mass fraction of the anti-precipitation agent is 2-4 g / L, and the mass fraction of the leveling agent is 1-2 g / L.

[0020] Preferably, in step (4), the disperse dyes are 0.5-1 g / L disperse cationic red GRL-ED and 0.5-1 g / L disperse cationic blue 5G-ED.

[0021] Preferably, in step (5), the mass fraction of the softener is 40-50 g / L, and the mass fraction of the silicone oil is 20-30 g / L.

[0022] Preferably, in step (1), the preparation method of the hydrophilically modified polyester fiber is:

[0023] Step 1: Add cyanuric chloride to acetone solvent, stir and spread, then add 2-(aminomethyl)-1,3-propanediol, react at 5-15°C for 2-6h, filter after the reaction, wash with deionized water, and dry to obtain intermediate 1, the reaction formula is:

[0024]

[0025] Step 2: Add intermediate 1 to acetone solvent, stir and disperse, then add 3,3'-imidodipropionitrile, control the temperature to 0-15°C, react for 2-5h, filter after the reaction, wash with deionized water, and dry to obtain intermediate 2, the reaction formula is:

[0026]

[0027] Step 3, add intermediate 2 to 35-45% sodium hydroxide solution, stir and disperse, react at 50-60°C for 3-6h, cool to room temperature after the reaction, filter, add 30-40% hydrochloric acid, stir for 20-50min, filter, wash with deionized water, and dry to obtain intermediate 3, the reaction formula is:

[0028] Step 4: under nitrogen conditions, add terephthalic acid to ethylene glycol, stir and disperse, react at 200-240° C., 0.2-0.5 MPa, react for 2-5 hours, then add intermediate 3, react for 1-3 hours, heat to 250-280° C., continue to react for 40-80 minutes, after the reaction is completed, discharge the material, dry at 100-110° C. for 1-2 hours, heat to 110-140° C., dry pre-crystallization, and then place in a melt spinning machine for melt spinning to obtain hydrophilic modified polyester fiber.

[0029] Preferably, in step 1, the molar ratio of cyanuric chloride to 2-(aminomethyl)-1,3-propanediol is 1:1.

[0030] Preferably, in step 2, the molar ratio of the intermediate 2 to 3,3'-iminedipropionitrile is 1:2-2.5.

[0031] Preferably, in step 4, the molar ratio of terephthalic acid, ethylene glycol and intermediate 3 is 1:1.1-1.5:0.02-0.1.

[0032] Preferably, in step 4, the melt spinning temperature is 270-280° C., the number of holes is 36, the spinneret aperture is 0.3 mm, the screw speed is 49 rpm, and the drafting multiple is 2 times.

[0033] (III) Beneficial technical effects

[0034] (1) The present invention uses cyanuric chloride, 2-(aminomethyl)-1,3-propylene glycol, 3,3'-iminodipropionitrile and the like as raw materials, and obtains intermediate 2 through two substitution reactions. The nitrile group contained in intermediate 2 is subjected to a hydrolysis reaction to obtain intermediate 3. Using terephthalic acid, ethylene glycol and intermediate 3 as raw materials, a hydrophilic modified polyester fiber is prepared through a reaction. Finally, the hydrophilic modified polyester fiber is used as a warp yarn and Tencel is used as a weft yarn to weave a two-color fabric.

[0035] (2) The two-color fabric prepared by the present invention contains a large number of carboxyl groups, which are hydrophilic groups with good moisture absorption and breathability, comfort, and can be combined with the active groups in the dye by hydrogen bonds to increase the color fastness of the fabric to soap washing.

[0036] (3) The present invention can achieve a double-sided and double-color effect, realize double-sided use, improve use efficiency, and increase the added value of the product. DETAILED DESCRIPTION

[0037] The present invention will be further explained below in conjunction with specific embodiments.

[0038] Example 1

[0039] (1) 0.1 mol of cyanuric chloride was added to acetone solvent, stirred and dispersed, and then 0.1 mol of 2-(aminomethyl)-1,3-propanediol was added thereto. The reaction was carried out at 5° C. for 5 h. After the reaction was completed, the mixture was filtered, washed with deionized water, and dried to obtain intermediate 1.

[0040] (2) 0.1 mol of intermediate 1 was added to acetone solvent, stirred and dispersed, and then 0.2 mol of 3,3'-imidodipropionitrile was added thereto. The temperature was controlled at 15°C and the reaction was carried out for 4 hours. After the reaction was completed, the mixture was filtered, washed with deionized water, and dried to obtain intermediate 2.

[0041] (3) Add intermediate 2 to 40% sodium hydroxide solution, stir and disperse, react at 55°C for 4 hours, cool to room temperature after the reaction, filter, add 38% hydrochloric acid, stir for 40 minutes, filter, wash with deionized water, and dry to obtain intermediate 3.

[0042] (4) Under nitrogen conditions, 10 mol of terephthalic acid was added to 12 mol of ethylene glycol, stirred and dispersed, and reacted at 230°C, 0.4 MPa for 3 h. Then, 0.8 mol of intermediate 3 was added thereto, reacted for 2 h, heated to 270°C, and continued to react for 80 min. After the reaction was completed, the material was discharged, dried at 110°C for 1.5 h, heated to 120°C, dried for pre-crystallization, and then placed in a melt spinning machine for melt spinning, wherein the melt spinning temperature was 275°C, the number of holes was 36, the spinneret aperture was 0.3 mm, the screw speed was 49 rpm, and the draft ratio was 2 times to obtain hydrophilic modified polyester fiber.

[0043] (5) A jet loom is used to weave the hydrophilic modified polyester fiber warp yarn and the Tencel weft yarn, wherein the weaving process is as follows: the reed number is 110, the number of insertions per reed is 2, the warp and weft density on the machine is 218 strands / 10 cm×210 strands / 10 cm, the reed width on the machine is 200 cm, and the total number of warp strands is 7000, to obtain a grey cloth.

[0044] (6) The obtained grey cloth is turned and hemmed, and then washed in 0.5 g / L soda ash, and then 30% acetic acid is added thereto to adjust the pH to 4.5, and then washed with deionized water to obtain an alkali-treated fabric.

[0045] (7) A rubber blanket shrinking machine is used for preshrinking, wherein the preshrinking temperature is 110° C., the presetting temperature is 180° C., and the machine speed is 40 m / min. After the preshrinking is completed, dehydration, drying, and presetting are performed to obtain a preshrinkable fabric.

[0046] (8) Add 1 g / L of dispersed cationic red GRL-ED and 0.6 g / L of dispersed cationic blue 5G-ED, 2.5 g / L of DM-2320 swelling aid, 3 g / L of anti-precipitation agent SE, and 2 g / L of leveling agent OD to the pre-shrunk fabric, dye at 120° C. for 1.8 h, and take out to obtain the dyed fabric.

[0047] (9) Add 50 g / L of C-1 softener and 30 g / L of silicone oil to the dyed fabric, and perform finishing at 180° C. for 4 min. After finishing, take out the fabric and dry it to obtain a two-color fabric.

[0048] Example 2

[0049] (1) 0.1 mol of cyanuric chloride was added to acetone solvent, stirred and dispersed, and then 0.1 mol of 2-(aminomethyl)-1,3-propanediol was added thereto. The reaction was carried out at 15° C. for 6 h. After the reaction was completed, the mixture was filtered, washed with deionized water, and dried to obtain intermediate 1.

[0050] (2) 0.1 mol of intermediate 1 was added to acetone solvent, stirred and dispersed, and then 0.25 mol of 3,3'-imidodipropionitrile was added thereto. The temperature was controlled at 0°C and the reaction was carried out for 2 hours. After the reaction was completed, the intermediate 2 was filtered, washed with deionized water, and dried to obtain the intermediate 2.

[0051] (3) Add intermediate 2 to 40% sodium hydroxide solution, stir and disperse, react at 60°C for 3 hours, cool to room temperature after the reaction, filter, add 35% hydrochloric acid, stir for 40 minutes, filter, wash with deionized water, and dry to obtain intermediate 3.

[0052] (4) Under nitrogen conditions, 10 mol of terephthalic acid was added to 14 mol of ethylene glycol, stirred and dispersed, and reacted at 230°C, 0.3 MPa for 4 h. Then, 0.6 mol of intermediate 3 was added thereto, reacted for 2 h, heated to 260°C, and continued to react for 50 min. After the reaction was completed, the material was discharged, dried at 105°C for 2 h, heated to 130°C, dried for pre-crystallization, and then placed in a melt spinning machine for melt spinning, wherein the melt spinning temperature was 275°C, the number of holes was 36, the spinneret aperture was 0.3 mm, the screw speed was 49 rpm, and the draft ratio was 2 times to obtain a hydrophilic modified polyester fiber.

[0053] (5) A jet loom is used to weave the hydrophilic modified polyester fiber warp yarn and the Tencel weft yarn, wherein the weaving process is as follows: the reed number is 110, the number of insertions per reed is 2, the warp and weft density on the machine is 218 strands / 10 cm×210 strands / 10 cm, the reed width on the machine is 200 cm, and the total number of warp strands is 7000, to obtain a grey cloth.

[0054] (6) The obtained grey cloth is turned over and hemmed, and then washed in 1 g / L soda ash, and then 30% acetic acid is added thereto to adjust the pH to 5, and then washed with deionized water to obtain an alkali-treated fabric.

[0055] (7) A rubber blanket shrinking machine is used for preshrinking, wherein the preshrinking temperature is 120°C, the presetting temperature is 180°C, and the machine speed is 40 m / min. After the preshrinking is completed, dehydration, drying, and presetting are performed to obtain a preshrinkable fabric.

[0056] (8) Add 0.8 g / L of dispersed cationic red GRL-ED and 1 g / L of dispersed cationic blue 5G-ED, 3 g / L of DM-2320 swelling aid, 2.5 g / L of anti-precipitation agent SE, and 1.5 g / L of leveling agent OD to the pre-shrunk fabric, dye at 115° C. for 2 h, and take out to obtain the dyed fabric.

[0057] (9) Add 48 g / L of C-1 softener and 30 g / L of silicone oil to the dyed fabric, and perform finishing at 190° C. for 5 min. After finishing, take out the fabric and dry it to obtain a two-color fabric.

[0058] Example 3

[0059] (1) 0.1 mol of cyanuric chloride was added to acetone solvent, stirred and dispersed, and then 0.1 mol of 2-(aminomethyl)-1,3-propanediol was added thereto. The reaction was carried out at 10° C. for 2 h. After the reaction was completed, the mixture was filtered, washed with deionized water, and dried to obtain intermediate 1.

[0060] (2) 0.1 mol of intermediate 1 was added to acetone solvent, stirred and dispersed, and then 0.24 mol of 3,3'-imidodipropionitrile was added thereto. The temperature was controlled at 10°C and the reaction was carried out for 5 hours. After the reaction was completed, the mixture was filtered, washed with deionized water, and dried to obtain intermediate 2.

[0061] (3) Add intermediate 2 to 45% sodium hydroxide solution, stir and disperse, react at 60°C for 6 hours, cool to room temperature after the reaction, filter, add 35% hydrochloric acid, stir for 30 minutes, filter, wash with deionized water, and dry to obtain intermediate 3.

[0062] (4) Under nitrogen conditions, 10 mol of terephthalic acid was added to 12 mol of ethylene glycol, stirred and dispersed, and reacted at 220°C, 0.3 MPa for 5 h. Then, 0.5 mol of intermediate 3 was added thereto, reacted for 2 h, heated to 260°C, and continued to react for 80 min. After the reaction was completed, the material was discharged, dried at 105°C for 2 h, heated to 110°C, dried for pre-crystallization, and then placed in a melt spinning machine for melt spinning, wherein the melt spinning temperature was 275°C, the number of holes was 36, the spinneret aperture was 0.3 mm, the screw speed was 49 rpm, and the draft ratio was 2 times to obtain a hydrophilic modified polyester fiber.

[0063] (5) A jet loom is used to weave the hydrophilic modified polyester fiber warp yarn and the Tencel weft yarn, wherein the weaving process is as follows: the reed number is 110, the number of insertions per reed is 2, the warp and weft density on the machine is 218 strands / 10 cm×210 strands / 10 cm, the reed width on the machine is 200 cm, and the total number of warp strands is 7000, to obtain a grey cloth.

[0064] (6) The obtained grey cloth is turned and hemmed, and then washed in 0.6 g / L soda ash, and then 30% acetic acid is added thereto to adjust the pH to 5, and then washed with deionized water to obtain an alkali-treated fabric.

[0065] (7) A rubber blanket shrinking machine is used for preshrinking, wherein the preshrinking temperature is 120°C, the presetting temperature is 180°C, and the machine speed is 50 m / min. After the preshrinking is completed, dehydration, drying, and presetting are performed to obtain a preshrinkable fabric.

[0066] (8) Add 0.5 g / L of dispersed cationic red GRL-ED and 1 g / L of dispersed cationic blue 5G-ED, 3 g / L of DM-2320 swelling aid, 4 g / L of anti-precipitation agent SE, and 1.2 g / L of leveling agent OD to the pre-shrunk fabric, dye at 120° C. for 1.9 h, and take out to obtain the dyed fabric.

[0067] (9) Add 49 g / L of C-1 softener and 26 g / L of silicone oil to the dyed fabric, and perform finishing at 180° C. for 5 min. After finishing, take out the fabric and dry it to obtain a two-color fabric.

[0068] Example 4

[0069] (1) 0.1 mol of cyanuric chloride was added to acetone solvent, stirred and dispersed, and then 0.1 mol of 2-(aminomethyl)-1,3-propanediol was added thereto. The reaction was carried out at 10° C. for 4 h. After the reaction was completed, the mixture was filtered, washed with deionized water, and dried to obtain intermediate 1.

[0070] (2) 0.1 mol of intermediate 1 was added to acetone solvent, stirred and dispersed, and then 0.24 mol of 3,3'-imidodipropionitrile was added thereto. The temperature was controlled at 10°C and the reaction was carried out for 3 hours. After the reaction was completed, the mixture was filtered, washed with deionized water, and dried to obtain intermediate 2.

[0071] (3) Add intermediate 2 to 35% sodium hydroxide solution, stir and disperse, react at 50°C for 3 hours, cool to room temperature after the reaction, filter, add 40% hydrochloric acid, stir for 50 minutes, filter, wash with deionized water, and dry to obtain intermediate 3.

[0072] (4) Under nitrogen conditions, 10 mol of terephthalic acid was added to 15 mol of ethylene glycol, stirred and dispersed, and reacted at 200°C, 0.2 MPa for 5 h. Then, 0.2 mol of intermediate 3 was added thereto, reacted for 3 h, heated to 250°C, and continued to react for 40 min. After the reaction was completed, the material was discharged, dried at 100°C for 2 h, heated to 140°C, dried for pre-crystallization, and then placed in a melt spinning machine for melt spinning, wherein the melt spinning temperature was 270°C, the number of holes was 36, the spinneret aperture was 0.3 mm, the screw speed was 49 rpm, and the draft ratio was 2 times to obtain hydrophilic modified polyester fiber.

[0073] (5) A jet loom is used to weave the hydrophilic modified polyester fiber warp yarn and the Tencel weft yarn, wherein the weaving process is as follows: the reed number is 110, the number of insertions per reed is 2, the warp and weft density on the machine is 218 strands / 10 cm×210 strands / 10 cm, the reed width on the machine is 200 cm, and the total number of warp strands is 7000, to obtain a grey cloth.

[0074] (6) The obtained grey cloth is turned and hemmed, and then washed in 0.6 g / L soda ash, and then 30% acetic acid is added thereto to adjust the pH to 5, and then washed with deionized water to obtain an alkali-treated fabric.

[0075] (7) A rubber blanket shrinking machine is used for preshrinking, wherein the preshrinking temperature is 110° C., the presetting temperature is 180° C., and the machine speed is 30 m / min. After the preshrinking is completed, dehydration, drying, and presetting are performed to obtain a preshrinkable fabric.

[0076] (8) Add 0.9 g / L of dispersed cationic red GRL-ED and 0.8 g / L of dispersed cationic blue 5G-ED, 3.5 g / L of DM-2320 swelling aid, 4 g / L of anti-precipitation agent SE, and 2 g / L of leveling agent OD to the pre-shrunk fabric, dye at 120° C. for 2 h, and take out to obtain the dyed fabric.

[0077] (9) Add 40 g / L of C-1 softener and 20 g / L of silicone oil to the dyed fabric, and perform finishing at 185° C. for 4 min. After finishing, take out the fabric and dry it to obtain a two-color fabric.

[0078] Example 5

[0079] (1) 0.1 mol of cyanuric chloride was added to acetone solvent, stirred and dispersed, and then 0.1 mol of 2-(aminomethyl)-1,3-propanediol was added thereto. The reaction was carried out at 10° C. for 5 h. After the reaction was completed, the mixture was filtered, washed with deionized water, and dried to obtain intermediate 1.

[0080] (2) 0.1 mol of intermediate 1 was added to acetone solvent, stirred and dispersed, and then 0.25 mol of 3,3'-imidodipropionitrile was added thereto. The temperature was controlled at 15°C and the reaction was carried out for 5 hours. After the reaction was completed, the mixture was filtered, washed with deionized water, and dried to obtain intermediate 2.

[0081] (3) Add intermediate 2 to 40% sodium hydroxide solution, stir and disperse, react at 55° C. for 4 h. After the reaction is completed, cool to room temperature, filter, add 30% hydrochloric acid, stir for 20 min, filter, wash with deionized water, and dry to obtain intermediate 3.

[0082] (4) Under nitrogen conditions, 10 mol of terephthalic acid was added to 11 mol of ethylene glycol, stirred and dispersed, and reacted at 240°C, 0.4 MPa for 3 h. Then, 1 mol of intermediate 3 was added thereto, reacted for 1 h, heated to 280°C, and continued to react for 60 min. After the reaction was completed, the material was discharged, dried at 110°C for 1 h, heated to 130°C, dried for pre-crystallization, and then placed in a melt spinning machine for melt spinning, wherein the melt spinning temperature was 280°C, the number of holes was 36, the spinneret aperture was 0.3 mm, the screw speed was 49 rpm, and the draft ratio was 2 times to obtain a hydrophilic modified polyester fiber.

[0083] (5) A jet loom is used to weave the hydrophilic modified polyester fiber warp yarn and the Tencel weft yarn, wherein the weaving process is as follows: the reed number is 110, the number of insertions per reed is 2, the warp and weft density on the machine is 218 strands / 10 cm×210 strands / 10 cm, the reed width on the machine is 200 cm, and the total number of warp strands is 7000, to obtain a grey cloth.

[0084] (6) The obtained grey cloth is turned and hemmed, and then washed in 0.6 g / L soda ash, and then 30% acetic acid is added thereto to adjust the pH to 5, and then washed with deionized water to obtain an alkali-treated fabric.

[0085] (7) A rubber blanket shrinking machine is used for preshrinking, wherein the preshrinking temperature is 110° C., the presetting temperature is 180° C., and the machine speed is 50 m / min. After the preshrinking is completed, dehydration, drying, and presetting are performed to obtain a preshrinkable fabric.

[0086] (8) Add 0.5 g / L of dispersed cationic red GRL-ED and 1 g / L of dispersed cationic blue 5G-ED, 2 g / L of DM-2320 swelling aid, 2 g / L of anti-precipitation agent SE, and 1 g / L of leveling agent OD to the pre-shrunk fabric, dye at 120° C. for 1 hour, and take out to obtain the dyed fabric.

[0087] (9) Add 50 g / L of C-1 softener and 28 g / L of silicone oil to the dyed fabric, and perform finishing at 180° C. for 5 min. After finishing, take out the fabric and dry it to obtain a two-color fabric.

[0088] Refer to ISO105C03-1989 to test the color fastness of fabrics to washing with soap.

[0089] Refer to ISO105-E04-2013 to test the color fastness of fabrics to perspiration.

[0090]

[0091]

[0092] It can be seen from the above table that the fabric prepared by the present invention has good color fastness to soaping and color fastness to perspiration.

[0093] Refer to FZ / T70006-2004 to test the resilience of fabrics.

[0094] Five dyeing and finishing technicians were selected to measure the fabric feel by hand.

[0095] Resilience Feel Example 1 Meet the Standard good Example 2 Meet the Standard good Example 3 Meet the Standard good Example 4 Meet the Standard good Example 5 Meet the Standard good

[0096] It can be seen from the table that the fabric prepared by the present invention has excellent resilience and hand feel.

[0097] Refer to GB / T5453-1997 to test the air permeability of fabrics.

[0098] Refer to GB / T11048-2018 to test the thermal insulation performance of fabrics.

[0099] <![CDATA[Air permeability / (mm·s -1 )]]> Crowe value Example 1 1022.19 0.06423 Example 2 1109.10 0.07294 Example 3 1099.45 0.07931 Example 4 1210.38 0.08192 Example 5 1146.23 0.06989

[0100] As can be seen from the table, the fabric prepared by the present invention has excellent air permeability and flame retardancy. The fabric prepared by the present invention has excellent comprehensive performance and can be widely used in various fields.

[0101] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A preparation process of a two-color fabric, characterized in that: The preparation process is: (1) Using hydrophilic modified polyester fiber as warp yarn and tencel fiber as weft yarn, the warp yarn and the weft yarn are woven by using an air jet loom, wherein the weaving process is as follows: the reed number is 110, the number of insertions per reed is 2, the warp and weft density on the machine is 218 strands / 10 cm×210 strands / 10 cm, the reed width on the machine is 200 cm, and the total number of warp strands is 7000, to obtain a grey fabric; (2) turning the seams and binding the edges of the obtained grey fabric, and then washing it in 0.5-1 g / L of soda ash, adding 30% acetic acid to adjust the pH to 4-5, and washing with deionized water to obtain an alkali-treated fabric; (3) using a rubber blanket preshrinking machine for preshrinking, wherein the preshrinking temperature is 100-120°C, the presetting temperature is 170-190°C, and the machine speed is 30-50 m / min. After the preshrinking is completed, dehydration, drying, and presetting are performed to obtain a preshrinked fabric; (4) adding disperse dye, DM-2320 swelling aid, anti-precipitation agent SE, and leveling agent OD to the pre-shrunk fabric, dyeing at 110-120° C. for 1-2 hours, and taking out to obtain the dyed fabric; (5) adding softener and silicone oil to the dyed fabric, finishing at 180-190° C. for 2-5 min, taking out and drying after finishing to obtain a two-color fabric. In (1), the preparation method of the hydrophilic modified polyester fiber is: Step 1, adding cyanuric chloride to acetone solvent, stirring and spreading, then adding 2-(aminomethyl)-1,3-propanediol thereto, reacting at 5-15° C. for 2-6 hours, after the reaction is completed, filtering, washing with deionized water, and drying to obtain intermediate 1; Step 2, adding intermediate 1 to acetone solvent, stirring and dispersing, then adding 3,3'-imidodipropionitrile thereto, controlling the temperature to 0-15°C, reacting for 2-5h, after the reaction is completed, filtering, washing with deionized water, and drying to obtain intermediate 2; Step 3, adding intermediate 2 to 35-45% sodium hydroxide solution, stirring and dispersing, reacting at 50-60°C for 3-6h, cooling to room temperature after the reaction, filtering, adding 30-40% hydrochloric acid, stirring for 20-50min, filtering, washing with deionized water, and drying to obtain intermediate 3; Step 4: under nitrogen conditions, add terephthalic acid to ethylene glycol, stir and disperse, react at 200-240° C., 0.2-0.5 MPa, react for 2-5 hours, then add intermediate 3, react for 1-3 hours, heat to 250-280° C., continue to react for 40-80 minutes, after the reaction is completed, discharge the material, dry at 100-110° C. for 1-2 hours, heat to 110-140° C., dry pre-crystallization, and then place in a melt spinning machine for melt spinning to obtain hydrophilic modified polyester fiber.

2. The preparation process of the two-color fabric according to claim 1, characterized in that: In the step (4), the mass fraction of the swelling aid is 2-4 g / L, the mass fraction of the anti-precipitation agent is 2-4 g / L, and the mass fraction of the leveling agent is 1-2 g / L.

3. The preparation process of the two-color fabric according to claim 1, characterized in that: In the step (4), the disperse dyes are 0.5-1 g / L of disperse cationic red GRL-ED and 0.5-1 g / L of disperse cationic blue 5G-ED.

4. The preparation process of the two-color fabric according to claim 1, characterized in that: In the step (5), the mass fraction of the softener is 40-50 g / L, and the mass fraction of the silicone oil is 20-30 g / L.

5. The preparation process of the two-color fabric according to claim 1, characterized in that: In the step 1, the molar ratio of cyanuric chloride to 2-(aminomethyl)-1,3-propanediol is 1:

1.

6. The preparation process of the two-color fabric according to claim 1, characterized in that: In the step 2, the molar ratio of the intermediate 1 to 3,3'-iminedipropionitrile is 1:2-2.

5.

7. The preparation process of the two-color fabric according to claim 1, characterized in that: In step 4, the molar ratio of terephthalic acid, ethylene glycol and intermediate 3 is 1:1.1-1.5:0.02-0.

1.

8. The preparation process of the two-color fabric according to claim 1, characterized in that: In the step 4, the melt spinning temperature is 270-280° C., the number of holes is 36, the spinneret aperture is 0.3 mm, the screw speed is 49 rpm, and the drafting multiple is 2 times.

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