Composite multifunctional warm clothing and preparation method thereof

Abstract

The present invention relates to a composite multifunctional thermal garment and a preparation method thereof. The composite multifunctional thermal garment comprises a fleece layer and a cotton layer; the fleece layer is a terry yarn made from modified polyester fiber, and is woven into a brushed base fleece fabric; the cotton layer is a fabric woven from moisture-absorbing and breathable yarn; the fleece layer and the cotton layer are sewn together by sewing thread. When making the brushed fleece garment, the present invention provides a pure cotton, skin-friendly cotton layer on the inner lining of the brushed fleece fabric, which has a dense hand feel and is comfortable and soft; the outer layer of the brushed fleece fabric adopts a fleece layer, the fibers of which are inherently porous, and a large amount of air can be accumulated between the fibers, thereby providing good breathability and maintaining the water balance of the fabric, thereby reducing the generation of static electricity in the fabric and also reducing the defect of pilling.

Description

Technical Field

[0001] The invention relates to the field of clothing fabrics, and in particular to a composite multifunctional warm clothing and a preparation method thereof. Background Art

[0002] Knitwear products for autumn and winter are primarily designed for warmth and comfort. Existing warm knit fabrics are mostly made with synthetic fiber linings. These linings are easily exposed due to their structural characteristics, making them prone to skin allergies when worn next to the skin. This is especially true for children, whose delicate skin is particularly susceptible to these issues.

[0003] Brushed fabrics are created through friction, creating a layer of short nap on the surface, thus altering the fabric's feel and appearance. Brushed fabrics offer excellent warmth and comfort, making them ideal for the fall and winter seasons. Brushing is a post-processing process whereby the fabric is subjected to the friction of a brush and a sanding machine, creating a layer of short nap on the surface. This process preserves the fabric's original properties while giving it a new look, enhancing warmth and softness. The result is a thick, soft, and rich texture, with a colorfastness that lasts for a long time. It is suitable for winter warmth products and items worn next to the skin.

[0004] Brushed fleece sweatshirts incorporate spandex, significantly improving their elasticity and flexibility compared to traditional sweatshirts. The surface is made of fully combed cotton that's finished with a carbon brushing process, resulting in a natural cotton texture as soft and delicate as baby skin. The base fabric has a thick and fluffy pile, and the interwoven pile creates a still air layer that provides excellent insulation against the cold. While stretchability, elasticity, softness, warmth, and comfort are advantages of brushed fleece sweatshirts, the disadvantages are that the brushed fleece doesn't absorb moisture, making it less breathable. Furthermore, when layered with other clothing, the high friction caused by the suede surface can easily generate static electricity and cause pilling. Summary of the Invention

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a composite multifunctional thermal insulation garment and a preparation method thereof.

[0006] The purpose of the present invention is achieved by adopting the following technical solutions:

[0007] In the first aspect, the present invention provides a composite multifunctional warm clothing, comprising a fleece layer and a cotton layer; the fleece layer is a fleece fabric with a terry yarn made of modified polyester fiber, which is woven into a fleece fabric with a brushed base; the cotton layer is a fabric woven with moisture-absorbing and breathable yarn; the fleece layer and the cotton layer are sewn together by sewing thread.

[0008] Preferably, in the fleece raising layer, the fineness of the modified polyester fiber of the terry yarn is 2.5-2.8 dtex, the terry yarn is woven in warp and weft, the warp density is 200-240 strands / 10 cm, and the weft density is 184-196 strands / 10 cm.

[0009] Preferably, the moisture-absorbing and breathable yarn used in the cotton cloth layer is obtained by weaving cotton fibers, and the single fiber fineness of the cotton fibers is 32S.

[0010] Preferably, in the cotton cloth layer, the moisture-absorbing and breathable yarn is weft-knitted; the specifications are: CPI:39, WPI28.

[0011] Preferably, the thickness of the cotton cloth layer is 0.4-0.8 mm.

[0012] Preferably, the preparation method of the modified polyester fiber comprises:

[0013] Step 1, polyester fiber pretreatment:

[0014] Weighing polyester fibers and mixing them in a 0.1 mol / L sodium hydroxide solution, heating them to 70-80°C for heat treatment, stirring them continuously to uniformly disperse the polyester fibers, filtering out the fibers after heat treatment for 0.5-1 hour, washing the fibers with 70-80°C water until the washing solution becomes neutral, and then drying them under vacuum to obtain a polyester fiber pretreatment product;

[0015] Wherein, the mass ratio of polyester fiber to sodium hydroxide solution is 1:10-20;

[0016] Step 2, polyester fiber surface treatment:

[0017] Weigh amino silicone oil, sodium lauryl sulfate, and octadecanol, mix them in a container, heat to 60-65° C., and stir to mix evenly to form an amino silicone oil mixed phase; add the polyester fiber pretreatment product to the amino silicone oil mixed phase, mix thoroughly, pour into a reactor, introduce inert gas as a protective gas, seal the reactor, and place it at 150-200° C. for 4-6 hours. After the reaction is completed, the reactor is naturally cooled to room temperature, the fiber is taken out and rinsed with acetone at least three times, and dried under vacuum to obtain amino silicone oil polyester fiber;

[0018] The viscosity of the amino silicone oil is 1000-2000 cps, the mass ratio of the amino silicone oil, sodium lauryl sulfate and octadecanol is 1:0.1-0.3:1.2-1.8; the mass ratio of the polyester fiber pretreatment product and the amino silicone oil mixture is 1:6-10;

[0019] Step 3, polyester fiber surface polymerization modification:

[0020] Weigh aminosilicone-modified polyester fiber and disperse it in tetrahydrofuran. After mixing evenly, add a tetrahydrofuran solution of 3-formylsalicylic acid dropwise under the protection of inert gas. After the addition is complete, stir at room temperature for 8-12 hours. Then, filter out the fiber, rinse with acetone at least three times, and dry under vacuum to obtain a modified polyester fiber.

[0021] The mass ratio of aminosilicone polyester fiber to tetrahydrofuran is 1:10-20, the mass ratio of 3-formylsalicylic acid to tetrahydrofuran in the tetrahydrofuran solution of 3-formylsalicylic acid is 1.6-2.2:15-20; and the mass ratio of aminosilicone polyester fiber to 3-formylsalicylic acid is 1:0.2-0.4.

[0022] In a second aspect, the present invention provides a method for preparing a composite multifunctional thermal garment, comprising the following steps:

[0023] Step 1: Spinning:

[0024] Terry yarn: Terry yarn is formed by spinning modified polyester fiber;

[0025] Moisture-absorbing and breathable yarn: cotton fiber is used to weave the yarn;

[0026] Step 2: Weaving:

[0027] The terry yarn is woven into a fleece layer fabric through a needle disc on a knitting machine, and the cotton yarn is fed through a 90-way machine from a single yarn mouth through a single-sided knitting machine, and woven in the weft direction to form a cotton cloth layer;

[0028] Step 3: Blank inspection:

[0029] Inspect the fabric blanks to see if there is any fluff on the surface, if there is any grease on the fabric, or if there are any surface defects.

[0030] Step 4: Order of grey fabric:

[0031] The qualified fabric blank is opened and pre-shaped according to the predetermined weight and width to obtain the predetermined fabric;

[0032] Step 5: Pre-treatment of grey fabric:

[0033] The pre-shaped fabric is passed through a continuous scouring and bleaching machine and sequentially subjected to scouring, first water washing, acid-base neutralization and second water washing to obtain a pre-treated fabric;

[0034] Step 6: Dyeing and washing:

[0035] The pre-treated fabric is placed in an overflow dyeing machine for dyeing with disperse dyes, and the fabric is shaped after being taken out of the vat, and then washed and reduced before being taken out of the vat;

[0036] Step 7: Finishing after opening:

[0037] The dyed fabric is dried and then shaped to meet the requirements in terms of width, weight, shrinkage, style and feel, and the fabric is finished after opening.

[0038] Step 8: Grab and sand the hair:

[0039] After the fabric is opened and finished and shaped, a raising machine is used to perform surface sanding and bottom raising on the fleece raising layer, and then the obtained fabric is cut and sewn to obtain a composite multifunctional warm clothing.

[0040] Preferably, the cotton fabric layer is made of combed compact spinning, a new spinning technology used on an improved new ring spinning frame. Its main spinning mechanism is to add a fiber cohesion zone before the traction device of the ring spinning frame, which essentially eliminates the spinning twist triangle between the front roller and the twisting point.

[0041] Preferably, the pre-forming temperature is 170-180° C., and the pre-forming machine speed is 25-30 m / min.

[0042] Preferably, the parameters of the dyeing process are: the mass concentration of disperse dye in the dye solution is 1%-3%, the dyeing time is 50-60 minutes, and the dyeing temperature is 120-140°C.

[0043] Preferably, the disperse dye is an azo disperse dye, specifically acid red G.

[0044] Preferably, the temperature of the shaping treatment is room temperature, and the machine speed of the shaping treatment is 25-30 m / min.

[0045] The beneficial effects of the present invention are:

[0046] 1. When making sanded fleece clothing, the present invention sets a pure cotton skin-friendly cotton cloth layer on the inner lining of the sanded fleece fabric, adopts high-quality Xinjiang cotton fiber, and the yarn produced by adding a combing process during weaving has a dense hand feel and the fabric is comfortable and soft; the outer layer of the sanded fleece fabric adopts a fleece layer, which is obtained by weaving modified polyester fiber as raw material and then sanding. The fibers of this layer of fabric are porous, and a large amount of air can accumulate between the fibers, so it has good air permeability and can also maintain the water balance of the fabric, thereby reducing the static electricity generation of the fabric and reducing the defect of pilling.

[0047] 2. The thermal clothing prepared by the present invention is more suitable for close-fitting wear. The fabric of the skin-friendly layer is not only moisture-absorbent and breathable after treatment, but also has a soft and delicate surface. Therefore, even if you want to layer clothes, it will be more convenient to put on and take off clothes. The clothing made by combining the two fabrics of the present invention combines the advantages of both fabrics: good elasticity and flexibility, softness and fineness, warmth and comfort, moisture-absorbent and perspiration-free when worn close to the skin, and easy to put on and take off.

[0048] 3. The brushed fleece fabric of the present invention is composed of modified polyester fibers, obtained by subjecting polyester fibers to a modification process. The modification process includes alkali reduction, aminosilicone oil treatment, and surface polymerization. The modified polyester fibers not only retain their inherent strength and elasticity, but also exhibit improved moisture absorption and breathability, while also enhancing their antibacterial properties. The resulting fabric not only maintains sufficient strength, is skin-friendly and breathable, but also exhibits antibacterial and antimicrobial properties.

[0049] 4. In the modification process of polyester fibers according to the present invention, the alkali reduction treatment is used to enhance the softness of the polyester fibers and simultaneously form etched pits on the polyester fiber surface to enhance the binding properties of subsequent surface polymerization. The aminosilicone oil treatment involves treating the fibers with an emulsion containing aminosilicone oil in a high-temperature reactor to modify the fiber surface with the aminosilicone oil. During this process, the fiber surface is coated with a layer of polysiloxane containing amino groups. The surface polymerization modification involves using 3-formyl salicylic acid, which contains both aldehyde and salicylic acid groups, to react with the amino-containing fibers. The aldehyde and amino groups condense to form a Schiff base structure. 3-Formyl salicylic acid, due to its multiple active groups, has a highly scalable structure. The Schiff base structure formed with aminosilicone oil forms a network structure through supramolecular cross-linking. The reaction process is mild, rapid, and efficient. Compared to conventional silicone oil-modified fibers, the fibers obtained according to the present invention not only have excellent mechanical properties but also combine the advantages of Schiff base derivatives of salicylic acid, giving the fibers unique hygroscopicity and antibacterial properties. DETAILED DESCRIPTION

[0050] In order to more clearly illustrate the present invention and have a clearer understanding of the technical features, objectives and beneficial effects of the present invention, the technical solution of the present invention is now described in detail below, but it should not be understood as limiting the scope of implementation of the present invention.

[0051] The present invention will be further described below with reference to the following examples.

[0052] Example 1

[0053] A composite multifunctional warm clothing comprises a fleece layer and a cotton layer; the fleece layer is a fleece fabric with a brushed base formed by weaving yarn made of modified polyester fiber as terry yarn; the cotton layer is a fabric woven from moisture-absorbing and breathable yarn; the fleece layer and the cotton layer are sewn together by sewing thread.

[0054] In the fleece raising layer, the fineness of the modified polyester fiber of the terry yarn is 2.6 dtex, the terry yarn is woven in warp and weft, the warp density is 220 yarns / 10 cm, and the weft density is 190 yarns / 10 cm.

[0055] The moisture-absorbing, breathable yarn used in the cotton fabric layer is woven from cotton fibers with a single fiber fineness of 32S. The moisture-absorbing, breathable yarn is weft-knitted in the cotton fabric layer, with specifications of CPI: 39 and WPI: 28. The cotton fabric layer has a thickness of 0.6 mm.

[0056] The preparation method of the modified polyester fiber comprises:

[0057] Step 1, polyester fiber pretreatment:

[0058] Weighing polyester fibers and mixing them in a 0.1 mol / L sodium hydroxide solution, heating them to 75°C for heat treatment while constantly stirring to uniformly disperse the polyester fibers. After heat treatment for 1 hour, filtering out the fibers, washing them with 75°C water until the washing solution is neutral, and then drying them under vacuum to obtain a polyester fiber pretreatment product; wherein the mass ratio of the polyester fibers to the sodium hydroxide solution is 1:15;

[0059] Step 2, polyester fiber surface treatment:

[0060] Weigh amino silicone oil, sodium lauryl sulfate, and octadecanol, mix them in a container, heat them to 65° C., and stir and mix them evenly to form an amino silicone oil mixed phase; add the polyester fiber pretreatment product to the amino silicone oil mixed phase, mix them thoroughly, pour them into a reactor, introduce inert gas as a protective gas, seal the reactor, and place it at 180° C. for 5 hours. After the reaction is completed, the reactor is naturally cooled to room temperature, and the fiber is taken out and rinsed with acetone at least three times, and dried under vacuum to obtain amino silicone oil polyester fiber; wherein the viscosity of the amino silicone oil is 1500 cps, the mass ratio of the amino silicone oil, sodium lauryl sulfate, and octadecanol is 1:0.2:1.5; and the mass ratio of the polyester fiber pretreatment product to the amino silicone oil mixed phase is 1:8;

[0061] Step 3, polyester fiber surface polymerization modification:

[0062] Aminosilicone-coated polyester fiber is weighed and dispersed in tetrahydrofuran. After uniform mixing, a tetrahydrofuran solution of 3-formylsalicylic acid is added dropwise under the protection of an inert gas. After the addition is complete, the mixture is stirred at room temperature for 8-12 hours. The fiber is then filtered out, rinsed with acetone at least three times, and dried under vacuum to obtain a modified polyester fiber. The modified polyester fiber has a mass ratio of 1:15 to tetrahydrofuran, a mass ratio of 3-formylsalicylic acid to tetrahydrofuran in the tetrahydrofuran solution of 3-formylsalicylic acid, and a mass ratio of 1.9:18 to tetrahydrofuran. The modified polyester fiber has a mass ratio of 1:0.3 to 3-formylsalicylic acid.

[0063] The preparation method of the composite multifunctional thermal insulation clothing comprises the following steps:

[0064] Step 1: Spinning:

[0065] Terry yarn: Terry yarn is formed by spinning modified polyester fiber;

[0066] Moisture-wicking breathable yarn: The yarn is woven from cotton fibers.

[0067] Step 2: Weaving:

[0068] A knitting machine uses terry yarn to weave a fleece-like fleece layer through a needle disc. Cotton yarn is fed through a single-jersey knitting machine using a single yarn feeder through a 90-way machine, and woven in the weft direction to form a cotton fabric layer. This cotton fabric layer is produced using combed compact spinning, a new spinning technology performed on an improved new ring spinning frame. Its main spinning mechanism involves adding a fiber cohesion zone before the traction device of the ring spinning frame, essentially eliminating the spinning twist triangle between the front roller and the twisting point.

[0069] Step 3: Blank inspection:

[0070] Inspect the fabric blanks to see if there is any fluff layer on the surface, if it is stained with grease, or if there are any surface defects.

[0071] Step 4: Order of grey fabric:

[0072] The qualified fabric blanks are opened and pre-formed according to the predetermined weight and width to obtain pre-formed fabrics; the pre-forming temperature is 170° C. and the pre-forming machine speed is 30 m / min.

[0073] Step 5: Pre-treatment of grey fabric:

[0074] The pre-shaped fabric is passed through a continuous scouring and bleaching machine and sequentially undergoes scouring, a first water washing, acid-base neutralization and a second water washing to obtain a pre-treated fabric.

[0075] Step 6: Dyeing and washing:

[0076] The pretreated fabric is placed in an overflow dyeing machine and dyed with disperse dye. After leaving the vat, the fabric is set, washed and reduced, and then removed from the vat. The dyeing process parameters are: a disperse dye concentration of 2% in the dye liquor, a dyeing time of 60 minutes, and a dyeing temperature of 130°C. The disperse dye is an azo disperse dye, specifically Acid Scarlet G.

[0077] Step 7: Finishing after opening:

[0078] After the dyed fabric is dried, it is subjected to a shaping process at room temperature and a machine speed of 25-30 m / min, so that the width, weight, shrinkage, fabric style and feel meet the requirements, and the finished fabric is obtained after opening.

[0079] Step 8: Grab and sand the hair:

[0080] After the fabric is opened and finished and shaped, a raising machine is used to perform surface sanding and bottom raising on the fleece raising layer, and then the obtained fabric is cut and sewn to obtain a composite multifunctional warm clothing.

[0081] Example 2

[0082] A composite multifunctional warm clothing comprises a fleece layer and a cotton layer; the fleece layer is a fleece fabric with a brushed base formed by weaving yarn made of modified polyester fiber as terry yarn; the cotton layer is a fabric woven from moisture-absorbing and breathable yarn; the fleece layer and the cotton layer are sewn together by sewing thread.

[0083] In the fleece raising layer, the fineness of the modified polyester fiber of the terry yarn is 2.5 dtex, the terry yarn is woven in warp and weft, the warp density is 200 yarns / 10 cm, and the weft density is 184 yarns / 10 cm.

[0084] The moisture-absorbing, breathable yarn used in the cotton fabric layer is woven from cotton fibers with a single fiber fineness of 32S. The moisture-absorbing, breathable yarn is weft-knitted in the cotton fabric layer, with specifications of CPI: 39 and WPI: 28. The cotton fabric layer has a thickness of 0.4 mm.

[0085] The preparation method of the modified polyester fiber comprises:

[0086] Step 1, polyester fiber pretreatment:

[0087] Weighing polyester fibers and mixing them in a 0.1 mol / L sodium hydroxide solution, heating them to 70°C for heat treatment while constantly stirring to uniformly disperse the polyester fibers. After heat treatment for 0.5 h, filtering out the fibers, washing them with 70°C water until the washing solution is neutral, and then drying them under vacuum to obtain a polyester fiber pretreatment product; wherein the mass ratio of the polyester fibers to the sodium hydroxide solution is 1:10;

[0088] Step 2, polyester fiber surface treatment:

[0089] Weigh amino silicone oil, sodium lauryl sulfate and octadecanol, mix them in a container, heat them to 60° C., and stir and mix them evenly to form an amino silicone oil mixed phase; add the polyester fiber pretreatment product to the amino silicone oil mixed phase, mix them thoroughly, pour them into a reactor, introduce inert gas as a protective gas, seal the reactor and place it at 150° C. for 4 hours, wait for the reaction to be completed, cool the reactor naturally to room temperature, take out the fiber and rinse it with acetone at least three times, and dry it under vacuum to obtain amino silicone oil polyester fiber; wherein the viscosity of the amino silicone oil is 1000 cps, the mass ratio of the amino silicone oil, sodium lauryl sulfate and octadecanol is 1:0.1:1.2; and the mass ratio of the polyester fiber pretreatment product to the amino silicone oil mixed phase is 1:6;

[0090] Step 3, polyester fiber surface polymerization modification:

[0091] Aminosilicone-coated polyester fiber is weighed and dispersed in tetrahydrofuran. After uniform mixing, a tetrahydrofuran solution of 3-formylsalicylic acid is added dropwise under the protection of an inert gas. After the addition is complete, the mixture is stirred at room temperature for 8 hours. The fiber is then filtered out, rinsed with acetone at least three times, and dried under vacuum to obtain a modified polyester fiber. The mass ratio of the aminosilicone-coated polyester fiber to tetrahydrofuran is 1:10, the mass ratio of 3-formylsalicylic acid to tetrahydrofuran in the tetrahydrofuran solution of 3-formylsalicylic acid is 1.6:15, and the mass ratio of the aminosilicone-coated polyester fiber to 3-formylsalicylic acid is 1:0.2.

[0092] The preparation method of the composite multifunctional thermal insulation clothing comprises the following steps:

[0093] Step 1: Spinning:

[0094] Terry yarn: Terry yarn is formed by spinning modified polyester fiber;

[0095] Moisture-wicking breathable yarn: The yarn is woven from cotton fibers.

[0096] Step 2: Weaving:

[0097] A knitting machine uses terry yarn to weave a fleece-like fleece layer through a needle disc. Cotton yarn is fed through a single-jersey knitting machine using a single yarn feeder through a 90-way machine, and woven in the weft direction to form a cotton fabric layer. This cotton fabric layer is produced using combed compact spinning, a new spinning technology performed on an improved new ring spinning frame. Its main spinning mechanism involves adding a fiber cohesion zone before the traction device of the ring spinning frame, essentially eliminating the spinning twist triangle between the front roller and the twisting point.

[0098] Step 3: Blank inspection:

[0099] Inspect the fabric blanks to see if there is any fluff layer on the surface, if it is stained with grease, or if there are any surface defects.

[0100] Step 4: Order of grey fabric:

[0101] The qualified fabric blanks are opened according to the predetermined weight and width and pre-formed to obtain pre-formed fabrics; the pre-forming temperature is 170° C. and the pre-forming machine speed is 25 m / min.

[0102] Step 5: Pre-treatment of grey fabric:

[0103] The pre-shaped fabric is passed through a continuous scouring and bleaching machine and sequentially undergoes scouring, a first water washing, acid-base neutralization and a second water washing to obtain a pre-treated fabric.

[0104] Step 6: Dyeing and washing:

[0105] The pretreated fabric is placed in an overflow dyeing machine and dyed with disperse dye. After leaving the vat, the fabric is set, washed and reduced, and then removed from the vat. The dyeing process parameters are: a disperse dye concentration of 1% in the dye liquor, a dyeing time of 50 minutes, and a dyeing temperature of 120°C. The disperse dye is an azo disperse dye, specifically Acid Scarlet G.

[0106] Step 7: Finishing after opening:

[0107] The dyed fabric is dried and then subjected to a shaping process at room temperature and a machine speed of 25 m / min, so that the width, weight, shrinkage, fabric style and feel all meet the requirements, and the finished fabric is obtained after opening.

[0108] Step 8: Grab and sand the hair:

[0109] After the fabric is opened and finished and shaped, a raising machine is used to perform surface sanding and bottom raising on the fleece raising layer, and then the obtained fabric is cut and sewn to obtain a composite multifunctional warm clothing.

[0110] Example 3

[0111] A composite multifunctional warm clothing comprises a fleece layer and a cotton layer; the fleece layer is a fleece fabric with a brushed base formed by weaving yarn made of modified polyester fiber as terry yarn; the cotton layer is a fabric woven from moisture-absorbing and breathable yarn; the fleece layer and the cotton layer are sewn together by sewing thread.

[0112] In the fleece raising layer, the fineness of the modified polyester fiber of the terry yarn is 2.8 dtex, the terry yarn is woven in warp and weft, the warp density is 240 strands / 10 cm, and the weft density is 196 strands / 10 cm.

[0113] The moisture-absorbing, breathable yarn used in the cotton fabric layer is woven from cotton fibers with a single fiber fineness of 32S. The moisture-absorbing, breathable yarn is weft-knitted in the cotton fabric layer, with specifications of CPI: 39 and WPI: 28. The cotton fabric layer has a thickness of 0.8 mm.

[0114] The preparation method of the modified polyester fiber comprises:

[0115] Step 1, polyester fiber pretreatment:

[0116] Weighing polyester fibers and mixing them in a 0.1 mol / L sodium hydroxide solution, heating them to 80°C for heat treatment while constantly stirring to evenly disperse the polyester fibers. After heat treatment for 1 hour, filtering out the fibers, washing them with 80°C water until the washing solution is neutral, and then drying them under vacuum to obtain a polyester fiber pretreatment product; wherein the mass ratio of the polyester fibers to the sodium hydroxide solution is 1:20;

[0117] Step 2, polyester fiber surface treatment:

[0118] Weigh amino silicone oil, sodium lauryl sulfate, and octadecanol, mix them in a container, heat them to 65° C., and stir and mix them evenly to form an amino silicone oil mixed phase; add the polyester fiber pretreatment product to the amino silicone oil mixed phase, mix them thoroughly, pour them into a reactor, introduce inert gas as a protective gas, seal the reactor, and place it at 200° C. for 6 hours. After the reaction is completed, the reactor is naturally cooled to room temperature, and the fiber is taken out and rinsed with acetone at least three times, and dried under vacuum to obtain amino silicone oil polyester fiber; wherein the viscosity of the amino silicone oil is 2000 cps, the mass ratio of the amino silicone oil, sodium lauryl sulfate, and octadecanol is 1:0.3:1.8; and the mass ratio of the polyester fiber pretreatment product to the amino silicone oil mixed phase is 1:10;

[0119] Step 3, polyester fiber surface polymerization modification:

[0120] Aminosilicone-coated polyester fiber is weighed and dispersed in tetrahydrofuran. After uniform mixing, a tetrahydrofuran solution of 3-formylsalicylic acid is added dropwise under the protection of an inert gas. After the addition is complete, the mixture is stirred at room temperature for 12 hours. The fiber is then filtered out, rinsed with acetone at least three times, and dried under vacuum to obtain a modified polyester fiber. The mass ratio of the aminosilicone-coated polyester fiber to tetrahydrofuran is 1:20, the mass ratio of 3-formylsalicylic acid to tetrahydrofuran in the tetrahydrofuran solution of 3-formylsalicylic acid is 2.2:20, and the mass ratio of the aminosilicone-coated polyester fiber to 3-formylsalicylic acid is 1:0.4.

[0121] The preparation method of the composite multifunctional thermal insulation clothing comprises the following steps:

[0122] Step 1: Spinning:

[0123] Terry yarn: Terry yarn is formed by spinning modified polyester fiber;

[0124] Moisture-wicking breathable yarn: The yarn is woven from cotton fibers.

[0125] Step 2: Weaving:

[0126] A knitting machine uses terry yarn to weave a fleece-like fleece layer through a needle disc. Cotton yarn is fed through a single-jersey knitting machine using a single yarn feeder through a 90-way machine, and woven in the weft direction to form a cotton fabric layer. This cotton fabric layer is produced using combed compact spinning, a new spinning technology performed on an improved new ring spinning frame. Its main spinning mechanism involves adding a fiber cohesion zone before the traction device of the ring spinning frame, essentially eliminating the spinning twist triangle between the front roller and the twisting point.

[0127] Step 3: Blank inspection:

[0128] Inspect the fabric blanks to see if there is any fluff layer on the surface, if it is stained with grease, or if there are any surface defects.

[0129] Step 4: Order of grey fabric:

[0130] The qualified fabric blank is opened and pre-formed according to the predetermined weight and width to obtain the pre-formed fabric; the pre-forming temperature is 180° C. and the pre-forming machine speed is 30 m / min.

[0131] Step 5: Pre-treatment of grey fabric:

[0132] The pre-shaped fabric is passed through a continuous scouring and bleaching machine and sequentially undergoes scouring, a first water washing, acid-base neutralization and a second water washing to obtain a pre-treated fabric.

[0133] Step 6: Dyeing and washing:

[0134] The pretreated fabric is placed in an overflow dyeing machine and dyed with disperse dye. After leaving the vat, the fabric is set, washed and reduced, and then removed from the vat. The dyeing process parameters are: a disperse dye concentration of 3% in the dye liquor, a dyeing time of 60 minutes, and a dyeing temperature of 140°C. The disperse dye is an azo disperse dye, specifically Acid Scarlet G.

[0135] Step 7: Finishing after opening:

[0136] After the dyed fabric is dried, it is subjected to a shaping process at room temperature and a machine speed of 25-30 m / min, so that the width, weight, shrinkage, fabric style and feel meet the requirements, and the finished fabric is obtained after opening.

[0137] Step 8: Grab and sand the hair:

[0138] After the fabric is opened and finished and shaped, a raising machine is used to perform surface sanding and bottom raising on the fleece raising layer, and then the obtained fabric is cut and sewn to obtain a composite multifunctional warm clothing.

[0139] Comparative Example 1

[0140] A fleece layer is a fleece fabric with a brushed base formed by weaving yarn made of modified polyester fiber as terry yarn; the difference from Example 1 is that the preparation method of the modified polyester fiber is different, and the rest is the same as Example 1.

[0141] The preparation method of the modified polyester fiber comprises:

[0142] Weigh polyester fibers and mix them in a 0.1 mol / L sodium hydroxide solution. Heat the mixture to 75°C for heat treatment while stirring continuously to evenly disperse the polyester fibers. After heat treatment for 1 hour, filter out the fibers and wash them with 75°C water until the washing liquid becomes neutral. Dry the fibers under vacuum to obtain modified polyester fibers. The mass ratio of the polyester fibers to the sodium hydroxide solution is 1:15.

[0143] Comparative Example 2

[0144] A fleece layer is a fleece fabric with a brushed base formed by weaving yarn made of modified polyester fiber as terry yarn; the difference from Example 1 is that the preparation method of the modified polyester fiber is different, and the rest is the same as Example 1.

[0145] The preparation method of the modified polyester fiber comprises:

[0146] Step 1: Weigh polyester fibers and mix them in a 0.1 mol / L sodium hydroxide solution. Heat the mixture to 75° C. for heat treatment while stirring continuously to uniformly disperse the polyester fibers. After heat treatment for 1 hour, filter out the fibers and wash them with 75° C. water until the washing liquid becomes neutral. Dry the fibers under vacuum to obtain a polyester fiber pretreatment product. The mass ratio of the polyester fibers to the sodium hydroxide solution is 1:15.

[0147] Step 2, polyester fiber surface treatment:

[0148] Weigh amino silicone oil, sodium lauryl sulfate and octadecanol, mix them in a container, heat to 65°C, and stir to mix evenly to form an amino silicone oil mixed phase; add a polyester fiber pretreatment product to the amino silicone oil mixed phase, mix thoroughly, pour into a reactor, introduce inert gas as a protective gas, seal the reactor and place it at 180°C for 5 hours, wait for the reaction to be completed, and after the reactor is naturally cooled to room temperature, take out the fiber and rinse it with acetone for at least three times, and dry it under vacuum to obtain a modified polyester fiber; wherein the viscosity of the amino silicone oil is 1500cps, the mass ratio of amino silicone oil, sodium lauryl sulfate and octadecanol is 1:0.2:1.5; the mass ratio of the polyester fiber pretreatment product to the amino silicone oil mixed phase is 1:8.

[0149] Comparative Example 3

[0150] A fleece layer is a fleece fabric with a brushed base formed by weaving yarn made of modified polyester fiber as terry yarn; the difference from Example 1 is that the preparation method of the modified polyester fiber is different, and the rest is the same as Example 1.

[0151] The preparation method of the modified polyester fiber comprises:

[0152] Step 1, polyester fiber pretreatment:

[0153] Weighing polyester fibers and mixing them in a 0.1 mol / L sodium hydroxide solution, heating them to 75°C for heat treatment while constantly stirring to uniformly disperse the polyester fibers. After heat treatment for 1 hour, filtering out the fibers, washing them with 75°C water until the washing solution is neutral, and then drying them under vacuum to obtain a polyester fiber pretreatment product; wherein the mass ratio of the polyester fibers to the sodium hydroxide solution is 1:15;

[0154] Step 2, polyester fiber surface treatment:

[0155] 3-formylsalicylic acid, sodium lauryl sulfate and deionized water are weighed and mixed in a container, heated to 65° C., and stirred to form a mixed phase; a polyester fiber pretreatment product is added to the mixed phase, kept warm and stirred for 5 hours, and naturally cooled to room temperature. The fiber is taken out and rinsed with deionized water for at least three times, and dried under vacuum conditions to obtain a modified polyester fiber; wherein the mass ratio of 3-formylsalicylic acid, sodium lauryl sulfate and octadecanol is 1:0.2:1.5; and the mass ratio of the polyester fiber pretreatment product to the mixed phase is 1:8.

[0156] Experimental example

[0157] The indicators of the fleece layers prepared in Example 1 and Comparative Examples 1-3 were tested, wherein:

[0158] Breaking strength test refers to GB / T 3923.2;

[0159] The test of volume resistivity of fabrics shall refer to GB / T 12703.4;

[0160] Water absorption test refers to GB / T 21655.1; moisture regain test refers to GB / T 9994-2008;

[0161] The inhibition rate was determined by culturing Escherichia coli and Staphylococcus aureus according to the method of standard GB / T 20944.3-2008, and then detecting the inhibition rate using the method of this standard.

[0162] Table 1 Performance test of different fabric layers

[0163]

[0164] As can be seen from Table 1, Example 1 has more balanced performance in all aspects, and has greatly improved in strength, water absorption, antistatic and antibacterial properties compared with Control Example 1; Control Example 2 is slightly weaker than Example 1, indicating that although its surface has been modified to some extent, it is still insufficient; and Control Example 3 is significantly weaker than Example 1 and slightly stronger than Control Example 1, indicating that its surface modification effect is not very good. It is speculated that the reason may be that the effect of fixing the modified substance on the fiber is not very good.

[0165] From the comparison of the moisture regain and water absorption of Control Examples 1-3, it can be seen that the moisture regain of Control Example 1 is higher than that of conventional polyester fibers (about 0.4%), indicating that its water absorption has increased after alkali treatment; Control Example 2 is much higher than Control Example 1, which may be because the surface hydrophilicity of its modified polyester fiber is much better; and Control Example 3 is not much higher than Control Example 1. Although its surface hydrophilicity has increased, the increase is not much, indicating that there are relatively few hydrophilic substances fixed on its surface.

[0166] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A composite multifunctional warm clothing, characterized in that: It includes a fleece layer and a cotton layer; the fleece layer is a fleece fabric with a terry yarn made of modified polyester fiber, which is woven into a fleece base; the cotton layer is a fabric woven from moisture-absorbing and breathable yarn; The fleece layer and the cotton layer are sewn together by sewing thread; The preparation method of the modified polyester fiber comprises: Step 1, polyester fiber pretreatment: Weighing polyester fibers and mixing them in a 0.1 mol / L sodium hydroxide solution, heating them to 70-80°C for heat treatment, stirring them continuously to uniformly disperse the polyester fibers, filtering out the fibers after heat treatment for 0.5-1 hour, washing the fibers with 70-80°C water until the washing solution becomes neutral, and then drying them under vacuum to obtain a polyester fiber pretreatment product; Step 2, polyester fiber surface treatment: Weigh amino silicone oil, sodium lauryl sulfate, and octadecanol, mix them in a container, heat to 60-65° C., and stir to mix evenly to form an amino silicone oil mixed phase; add the polyester fiber pretreatment product to the amino silicone oil mixed phase, mix thoroughly, pour into a reactor, introduce inert gas as a protective gas, seal the reactor, and place it at 150-200° C. for 4-6 hours. After the reaction is completed, the reactor is naturally cooled to room temperature, the fiber is taken out and rinsed with acetone at least three times, and dried under vacuum to obtain amino silicone oil polyester fiber; Step 3, polyester fiber surface polymerization modification: Weigh the aminosilicone polyester fiber and disperse it in tetrahydrofuran. After mixing evenly, add the tetrahydrofuran solution of 3-formylsalicylic acid dropwise under the protection of inert gas. After the addition is complete, stir at room temperature for 8-12 hours, then filter out the fiber, rinse with acetone at least three times, and dry under vacuum to obtain the modified polyester fiber.

2. A composite multifunctional warm clothing according to claim 1, characterized in that: In the fleece raising layer, the fineness of the modified polyester fiber of the terry yarn is 2.5-2.8 dtex, the terry yarn is woven in warp and weft, the warp density is 200-240 yarns / 10cm, and the weft density is 184-196 yarns / 10cm.

3. The composite multifunctional warm clothing according to claim 1, characterized in that: The moisture-absorbing and breathable yarn used in the cotton cloth layer is obtained by weaving cotton fibers, and the single fiber fineness of the cotton fibers is 32S.

4. The composite multifunctional warm clothing according to claim 1, characterized in that: In the cotton cloth layer, the moisture-absorbing and breathable yarn is weft-knitted; the specifications are: CPI:39, WPI:

28.

5. The composite multifunctional warm clothing according to claim 1, characterized in that: In the step 1, the mass ratio of the polyester fiber to the sodium hydroxide solution is 1:10-20; In step 2, the viscosity of the amino silicone oil is 1000-2000 cps, the mass ratio of the amino silicone oil, sodium lauryl sulfate, and octadecanol is 1:0.1-0.3:1.2-1.8; and the mass ratio of the polyester fiber pretreatment product to the amino silicone oil mixture is 1:6-10; In step 3, the mass ratio of the aminosilicone polyester fiber to tetrahydrofuran is 1:10-20, the mass ratio of 3-formylsalicylic acid to tetrahydrofuran in the tetrahydrofuran solution of 3-formylsalicylic acid is 1.6-2.2:15-20; and the mass ratio of the aminosilicone polyester fiber to 3-formylsalicylic acid is 1:0.2-0.

4.

6. A method for preparing the composite multifunctional thermal garment according to any one of claims 1 to 5, characterized in that: The following steps are involved: Step 1: Spinning: Terry yarn: Terry yarn is formed by spinning modified polyester fiber; Moisture-absorbing and breathable yarn: cotton fiber is used to weave the yarn; Step 2: Weaving: The terry yarn is woven into a fleece layer fabric through a needle disc on a knitting machine, and the cotton yarn is fed through a 90-way machine from a single yarn mouth through a single-sided knitting machine, and woven in the weft direction to form a cotton cloth layer; Step 3: Blank inspection: Inspect the fabric blanks to see if there is any fluff on the surface, if there is any grease on the fabric, or if there are any surface defects. Step 4: Order of grey fabric: The qualified fabric blank is opened and pre-shaped according to the predetermined weight and width to obtain the predetermined fabric; Step 5: Pre-treatment of grey fabric: The pre-shaped fabric is passed through a continuous scouring and bleaching machine and sequentially subjected to scouring, first water washing, acid-base neutralization and second water washing to obtain a pre-treated fabric; Step 6: Dyeing and washing: The pre-treated fabric is placed in an overflow dyeing machine for dyeing with disperse dyes, and the fabric is shaped after being taken out of the vat, and then washed and reduced before being taken out of the vat; Step 7: Finishing after opening: The dyed fabric is dried and then shaped to meet the requirements in terms of width, weight, shrinkage, style and feel, and the fabric is finished after opening. Step 8: Grab and sand the hair: After the fabric is opened and finished and shaped, a raising machine is used to perform surface sanding and bottom raising on the fleece raising layer, and then the obtained fabric is cut and sewn to obtain a composite multifunctional warm clothing.

7. The composite multifunctional warm clothing according to claim 6, characterized in that: The cotton cloth layer adopts combed compact spinning, which is a new spinning technology performed on an improved new ring spinning frame. Its spinning mechanism is mainly: a fiber cohesion area is added in front of the ring spinning frame traction device, which basically eliminates the spinning twisting triangle area between the front roller and the twisting point.

8. The method for preparing a composite multifunctional warm clothing according to claim 6, characterized in that: The pre-forming temperature is 170-180° C., and the pre-forming machine speed is 25-30 m / min.

9. The method for preparing a composite multifunctional thermal garment according to claim 6, characterized in that: The parameters of the dyeing process are: the mass concentration of disperse dye in the dye solution is 1%-3%, the dyeing time is 50-60 minutes, and the dyeing temperature is 120-140°C.

10. The method for preparing a composite multifunctional thermal garment according to claim 6, characterized in that: The temperature of the shaping treatment is room temperature, and the machine speed of the shaping treatment is 25-30 m / min.

Images