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CN-122013507-A - Light down jacket down penetration-preventing knitted fabric

CN122013507ACN 122013507 ACN122013507 ACN 122013507ACN-122013507-A

Abstract

The invention relates to the technical field of fabrics, in particular to a light-weight down jacket down penetration-proof knitted fabric. A light down jacket anti-penetration knitting fabric comprises preparation of composite shell-core hybrid emulsion, preparation of modified aramid nanofiber and preparation of anti-penetration knitting fabric. According to the invention, the core-shell emulsion is prepared by allyl bromide modified silicon dioxide, the anti-drilling velvet is uniformly dispersed, and the modified aramid fiber is prepared by camphor, so that a double heat insulation barrier is formed, and the lightweight is compatible. The stability is enhanced by adopting hexagonal jacquard, the environment-friendly TPU ironing film is covered to form double barriers, the waterproof and anti-corrosion effects are achieved, the coating is protected, the anti-velvet-drilling effective period is prolonged, and the strength and the heat preservation performance of the fabric are improved.

Inventors

  • HU JUN
  • REN JIANGPING
  • LI BEN
  • MA MINGQIANG
  • HUANG YUANYUAN

Assignees

  • 江苏泰慕士针纺科技股份有限公司
  • 浙江森马服饰股份有限公司

Dates

Publication Date
20260512
Application Date
20260310

Claims (8)

  1. 1. The utility model provides a light-weight down jacket anti-penetration knitting fabric which is characterized in that the preparation process comprises the following steps: s1, preparing composite shell-core hybrid emulsion; Allyl bromide is adopted to modify silicon dioxide, and then modified silicon dioxide, MMA, BA, MAA and HPA are used as raw materials to react to prepare the composite shell-core hybrid emulsion; S2, preparing modified aramid fibers; Dissolving aramid fiber by adopting potassium tert-butoxide and dimethyl sulfoxide, adding methanol to prepare an aramid fiber solution, mixing camphor and the aramid fiber solution, carrying out wet spinning, soaking the spun hydrogel fiber into a tert-butanol aqueous solution, and then carrying out freeze drying to obtain a modified aramid fiber; s3, preparing a down-drilling-preventing knitted fabric; Blending 20-30 parts by weight of modified aramid fiber and 30-40 parts by weight of Sorona PTT fiber to prepare blend fiber, knitting the blend fiber by a 32G single-sided circular knitting machine to obtain a knitted fabric, dyeing the knitted fabric, drying, soaking the knitted fabric in a composite shell-core hybrid emulsion for two-soaking and two-padding to obtain a finished knitted fabric, and tentering, shaping and ironing the finished knitted fabric to obtain the anti-drilling knitted fabric.
  2. 2. The lightweight down jacket anti-penetration knitted fabric according to claim 1, wherein the preparation of the composite shell-core hybrid emulsion is characterized by comprising the following steps: S1.1, dispersing 2-3 parts by weight of silicon dioxide in 20-30 parts by weight of deionized water, then carrying out ultrasonic homogenization for 30-40min under ice bath, carrying out power 600-620W, working for 2S, suspending for 2S, then adding 4.5-5 parts by weight of allyl bromide, stirring and mixing for 10-20min at 65-70 ℃, then dripping 10-12 parts by weight of 50wt% sodium hydroxide aqueous solution by a peristaltic pump for 2-3h, keeping constant temperature in the dripping process and carrying out condensation reflux, reacting for 1-2h after the dripping is completed, centrifuging for 20-30min at 8000-10000r/min, washing and drying the centrifugal precipitate, and obtaining modified silicon dioxide; 1.2, mixing 0.5-1 part by weight of modified silicon dioxide and 1.5-2 parts by weight of auxiliary stabilizer hexadecane for 5-10min by ultrasonic, adding 0.5-2 parts by weight of MMA, 15-17 parts by weight of BA, 0.5-2 parts by weight of MAA and 0.5-2 parts by weight of HPA, homogenizing for 30-40min in ice bath, carrying out power 450-480W, working for 2S, suspending for 2S, adding 0.35-0.5 part by weight of SDS and 0.35-0.5 part by weight of TERGITOL-15-S-40, and continuing homogenizing for 30-40min to obtain a pre-emulsion; S1.3, mixing 1/3 parts by weight of pre-emulsion and 9-12 parts by weight of deionized water, adding 2-3 parts by weight of 5-10wt% APS aqueous solution at 82-83 ℃ for reaction for 15-20min, adding the rest 2/3 parts by weight of pre-emulsion and mixed solution consisting of 0.2-0.3 part by weight of APS and 10-12 parts by weight of deionized water, reacting for 4-5h at 200-230r/min, adding ammonia water after the reaction is completed, adjusting to be neutral, and filtering by 300-mesh filter cloth to obtain the composite shell-core hybrid emulsion.
  3. 3. The lightweight down jacket anti-penetration knitted fabric according to claim 2, wherein the preparation of the modified aramid fiber is S2, and specifically comprises the following steps: S2.1, cutting 2-2.2 parts by weight of commercial aramid fiber into short fiber with the length of 1-2cm, then cleaning and drying, adding 10-12 parts by weight of potassium tert-butoxide and 78-80 parts by weight of dimethyl sulfoxide into the short fiber after cleaning and drying, stirring for 1-2 hours at normal temperature, then adding 10-12 parts by weight of methanol in total for 6 times within 1 hour, stirring and mixing, standing for 7-8 days, and obtaining an aramid fiber solution; S2.2, placing 1-2 parts by weight of camphor into a container, adding an aramid fiber solution into the container at 300-500r/min, and stirring and mixing for 1-2 hours to obtain a camphor-aramid fiber solution; S2.3, extracting the camphor-aramid fiber solution into an injector, assembling the injector with a needle head with the aperture of 150 mu m, fixing the injector on an injection pump, injecting the fiber into a coagulating bath at the speed of 25-30 mu L min -1 , setting the coagulating bath into deionized water, and collecting hydrogel fiber to a wire coil, wherein the traction ratio is 3:1; S2.4, soaking the hydrogel fiber into a 25-30wt% tertiary butanol aqueous solution, replacing the tertiary butanol aqueous solution every 48-72 hours, repeating for 3-4 times, replacing camphor and water in gel, putting the replaced gel fiber into a low-temperature refrigerator at-85 ℃ for freezing for 6-8 hours, and then freeze-drying for 12-14 hours to obtain the modified aramid fiber.
  4. 4. The light-weight down jacket anti-penetration knitted fabric according to claim 3, wherein the preparation of the anti-penetration knitted fabric is S3, and specifically comprises the following steps: S3.1, compounding 20-30 parts by weight of modified aramid fiber and 30-40 parts by weight of Sorona PTT fiber to prepare a blend fiber by blending, and knitting the blend fiber by selecting a 32G single-sided circular knitting machine to obtain a knitted fabric; S3.2, dyeing and drying the knitted fabric to obtain a dried knitted fabric, soaking the knitted fabric in the composite shell-core hybrid emulsion, soaking for two times and two times, wherein the rolling surplus rate is 80%, the soaking time is 20-30min, then pre-drying for 3-5min at 80-82 ℃, and then drying for 3-5min at 110-120 ℃ to obtain a finished knitted fabric; S3.3, tentering and shaping the finished knitted fabric, preheating a hot melt adhesive machine to 170-180 ℃, spraying adhesive to the knitted fabric after tentering and shaping, immediately covering a TPU film and the knitted fabric after the adhesive spraying is finished, performing hot pressing treatment by an LP type vertical padder, wherein the pressure is 0.3-0.5MPa, the speed is 6.5-7m/min, and obtaining the anti-drilling knitted fabric after finishing ironing the film.
  5. 5. The lightweight down jacket anti-penetration knitted fabric according to claim 4, wherein the knitting in step S3.1 is specifically 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27 plain stitches, 2, 18 floats, plain, float, tuck, float, plain stitch, 4, 16 tuck, float, plain, float, 6, 8, 10, 12, 14 floats, tuck, float, plain, float, tuck, 20, 22, 24, 26, 28 plain, float, tuck, float.
  6. 6. The light-weight down jacket anti-penetration knitted fabric according to claim 4, wherein the plain weave portion is 100-125mm/50 loops and the jacquard weave portion is 50-70mm/50 loops in step S3.1.
  7. 7. The lightweight down jacket anti-penetration knitted fabric according to claim 6, wherein the plain weave portion is preferably 105-110mm/50 stitches in length and the jacquard weave portion is preferably 65-70mm/50 stitches in length in step S3.1.
  8. 8. The lightweight down jacket anti-penetration knitted fabric according to claim 4, wherein the glue spraying amount in the step S3.3 is 1.5-1.8g/m 2 .

Description

Light down jacket down penetration-preventing knitted fabric Technical Field The invention relates to the technical field of fabrics, in particular to a light-weight down jacket down penetration-proof knitted fabric. Background Along with the deep concepts of consumer upgrading and green environmental protection, the light down jackets with high performance become the main market demands. However, the existing down jacket anti-penetration knitting fabric still faces a plurality of technical bottlenecks in practical application, and improvement of product performance through innovative technology is needed. In the aspect of down penetration resistance, the traditional down penetration-resistant knitted fabric is very easy to cause the problem of down penetration due to poor control of gaps among fibers. Conventional solutions rely on coating thickening or high density weaving, but this can add significantly to the weight of the fabric, contradicting the need for lightweight. Meanwhile, although the compactness of the fabric can be improved by the inorganic nanoparticle modification technology, the modification effect is uneven due to particle agglomeration in the processing process, and the structural integrity of the fabric can be further damaged by the agglomeration phenomenon in the drying or dehydration drying stage, so that stable and effective physical barrier is difficult to form. The balance of thermal insulation performance and light weight is another core challenge. Traditional down jackets mainly rely on thickening filling layers to improve the warm-keeping effect, so that the weight of products is increased, the wearing comfort level is reduced, and the requirements of light down jackets are difficult to meet. And the insufficient durability of the fabric also restricts the improvement of the quality of the product. In the daily wearing and washing process of the down jacket, the down-penetration-preventing knitted fabric needs to bear external forces such as friction, stretching and the like for a long time, so that the problems of abrasion, tearing and the like are easy to occur, the down-penetration-preventing coating is dropped off, the fiber structure is damaged, and the service life of the product is seriously shortened. Therefore, the application develops the preparation process of the light down jacket down-penetration-preventing knitted fabric capable of simultaneously realizing down penetration prevention, high-efficiency heat preservation, light weight and high durability, becomes a key for solving the technical pain point of the current down jacket industry, and has important significance for promoting the technical upgrading of the industry. Disclosure of Invention Aiming at the defects in the prior art, the invention aims to provide the light-weight down jacket down penetration-preventing knitted fabric. The invention provides a light-weight down jacket down-penetration-preventing knitted fabric, which comprises the following preparation process: s1, preparing composite shell-core hybrid emulsion; Allyl bromide is adopted to modify silicon dioxide, and then modified silicon dioxide, MMA, BA, MAA and HPA are used as raw materials to react to prepare the composite shell-core hybrid emulsion; S2, preparing modified aramid fibers; Dissolving aramid fiber by adopting potassium tert-butoxide and dimethyl sulfoxide, adding methanol to prepare an aramid fiber solution, mixing camphor and the aramid fiber solution, carrying out wet spinning, soaking the spun hydrogel fiber into a tert-butanol aqueous solution, and then carrying out freeze drying to obtain a modified aramid fiber; s3, preparing a down-drilling-preventing knitted fabric; Blending 20-30 parts by weight of modified aramid fiber and 30-40 parts by weight of Sorona PTT fiber to prepare blend fiber, knitting the blend fiber by a 32G single-sided circular knitting machine to obtain a knitted fabric, dyeing the knitted fabric, drying, soaking the knitted fabric in a composite shell-core hybrid emulsion for two-soaking and two-padding to obtain a finished knitted fabric, and tentering, shaping and ironing the finished knitted fabric to obtain the anti-drilling knitted fabric. As a preferred aspect, the preparation of the composite shell-core hybrid emulsion comprises the following steps: S1.1, dispersing 2-3 parts by weight of silicon dioxide in 20-30 parts by weight of deionized water, then carrying out ultrasonic homogenization for 30-40min under ice bath, carrying out power 600-620W, working for 2S, suspending for 2S, then adding 4.5-5 parts by weight of allyl bromide, stirring and mixing for 10-20min at 65-70 ℃, then dripping 10-12 parts by weight of 50wt% sodium hydroxide aqueous solution by a peristaltic pump for 2-3h, keeping constant temperature in the dripping process and carrying out condensation reflux, reacting for 1-2h after the dripping is completed, centrifuging for 20-30min at 8000-10000r/min, washing and drying the ce