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CN-116278252-B - Multicomponent heat-insulating high-density polyester fabric and preparation method thereof

CN116278252BCN 116278252 BCN116278252 BCN 116278252BCN-116278252-B

Abstract

The invention provides a multi-component heat-insulating high-density polyester fabric which comprises a fabric layer, a heat-insulating layer and a skin-friendly layer, wherein the fabric layer is a high-density polyester fabric, the heat-insulating layer is a composite gel layer, the skin-friendly layer is an electrostatic spinning layer, the composite gel layer is formed by compositing a macroporous gel layer and a small pore gel layer, the porosity of the macroporous gel layer is 90-95%, the average pore diameter is 100-130nm, the porosity of the small pore gel layer is 96-99%, and the average pore diameter is 50-100nm. The invention provides a multi-component heat-insulating high-density polyester fabric, which achieves a better heat-insulating effect by arranging multiple layers and matching with gels with different volume densities.

Inventors

  • YAO DONGPING
  • LU JIANHONG
  • MA CHENBIN
  • XUE ZHULIANG

Assignees

  • 吴江德伊时装面料有限公司

Dates

Publication Date
20260505
Application Date
20230317

Claims (7)

  1. 1. The multi-component heat-insulating high-density polyester fabric is characterized by comprising a fabric layer, a heat-insulating layer and a skin-friendly layer, wherein the fabric layer is a high-density polyester fabric, the heat-insulating layer is a composite gel layer, the skin-friendly layer is an electrostatic spinning layer, the composite gel layer is formed by compositing a macroporous gel layer and a small pore gel layer, the porosity of the macroporous gel layer is 90-95%, the average pore diameter is 102.3-130nm, the porosity of the small pore gel layer is 96-99%, the average pore diameter is 50-100nm, the small pore diameter gel layer is close to the body, and the large pore diameter gel layer is far away from the body and close to the polyester fabric layer; the preparation method of the multi-component heat-preservation high-density polyester fabric comprises the following steps of: S1, performing alkali deweighting treatment on the polyester fabric to obtain a surface modified polyester fabric; S2, smearing cellulose hydrogel with the thickness of 1-2mm on one side of the surface modified polyester fabric, soaking the surface modified polyester fabric in ethanol solution to gel the surface modified polyester fabric, and preparing the polyester fabric covered with the macroporous gel layer; s3, carrying out instantaneous high-temperature heat setting on the polyester fabric covered with the macroporous gel layer and prepared in the step S2, wherein the temperature of the instantaneous high-temperature heat setting is 100-120 ℃ and the time is 5-10S, so as to obtain the polyester fabric with the macroporous gel layer and carbonized on the surface; S4, coating cellulose/wool mixed gel with the thickness of 0.2-0.4mm on the surface of the polyester fabric with the surface carbonized macroporous gel layer prepared in the step S3, and drying to obtain the polyester fabric loaded with the heat preservation layer; S5, preparing a skin-friendly layer on the surface of the polyester fabric loaded with the heat preservation layer prepared in the step S4 through electrostatic spinning, and finally obtaining the multi-component heat-preservation high-density polyester fabric.
  2. 2. The multi-component heat-insulating high-density polyester fabric as claimed in claim 1, wherein the alkali deweighting treatment process is characterized in that sodium hydroxide solution with concentration of 10-20% is selected, the treatment temperature is 80-85 ℃, the solid-liquid ratio is 1:40-60, and the treatment time is 40-90s respectively.
  3. 3. The multi-component heat-insulating high-density polyester fabric as claimed in claim 1, wherein the preparation method of the cellulose hydrogel is characterized in that microcrystalline cellulose is dissolved in NaOH/urea mixed water solution at the temperature of-5 ℃ to obtain cellulose/NaOH/urea mixed water solution by stirring, then the cellulose/NaOH/urea mixed water solution is placed in a refrigerator at the temperature of-20 ℃ to-15 ℃ to be frozen for 24h, and then the cellulose hydrogel with the concentration of 2-3wt% is obtained by thawing.
  4. 4. The multi-component heat-insulating high-density polyester fabric as claimed in claim 1, wherein the preparation method of the cellulose/wool mixed gel is as follows: s11, dissolving chopped wool in a NaOH/urea mixed water solution, and reacting for 60-120min at 70-80 ℃ to prepare wool hydrolysate with the concentration of 8-14 wt%; s12, adding microcrystalline cellulose into the wool hydrolysate prepared in the step S11, stirring until the microcrystalline cellulose is dissolved and dispersed, and then adding inorganic acid to adjust the pH value of the solution to be 6-6.5, thereby obtaining composite gel; and S13, adding hollow silicon dioxide particles into the composite gel, and uniformly stirring and mixing to obtain the cellulose/wool mixed gel.
  5. 5. The multi-component heat-insulating high-density polyester fabric according to claim 4, wherein the mass ratio of microcrystalline cellulose to wool hydrolysate in the step S12 is 1:30-40.
  6. 6. The multi-component heat-insulating high-density polyester fabric according to claim 5, wherein the hollow silica particles in the step S13 are silane modified nano hollow silica, and the weight ratio of the silica to the composite gel is 1:40-50.
  7. 7. The multi-component heat-insulating high-density polyester fabric according to claim 1, wherein the thickness of the electrostatic spinning layer in the step S5 is 0.1-0.2mm, and the porosity is 70-75%.

Description

Multicomponent heat-insulating high-density polyester fabric and preparation method thereof Technical Field The invention relates to the field of functional fabrics, in particular to a multi-component heat-preservation high-density polyester fabric and a preparation method thereof. Background Cold wear, also called cold weather wear, generally refers to wear which can maintain normal life and work of human body under the natural environment condition that the temperature is between-4 ℃ and 10 ℃ and the temperature is windy and snowy. In order to take account of climate regulation and general adaptability, the cold protective clothing is developed in the direction of being matched with a multi-layer combined structure, and is gradually developed in the directions of product serialization, material weight reduction, structure science, function rationalization and the like. According to the function and mode of the thermal insulation material in the thermal insulation process, namely the thermal insulation principle, the thermal insulation material can be generally divided into two main categories of passive thermal insulation and active thermal insulation, wherein the passive thermal insulation mainly achieves the aim of thermal insulation by preventing or reducing heat dissipation of a human body, but the thermal insulation material has proper volume density to achieve good thermal insulation effect. The larger the volume density of the thermal insulation material, the more the fiber amount contained in the thermal insulation material is, the more the fiber aggregate is tightly combined, the less the air amount contained in the thermal insulation material is, thereby reducing the thermal insulation property of the garment, on the contrary, the smaller the volume density of the thermal insulation material is, the less the fiber amount is, the fiber aggregate is fluffy, the distance between the fibers is increased, and although the air is contained in the thermal insulation material, the better the air is not kept, the flowing is easy to form, the convection heat dissipation is generated, and the thermal insulation property of the garment is also reduced. Disclosure of Invention The invention aims to provide a multi-component heat-insulating high-density polyester fabric, which achieves a better heat-insulating effect by arranging multiple layers and matching with gels with different volume densities. The technical scheme is that the multi-component heat-insulating high-density polyester fabric comprises a fabric layer, a heat-insulating layer and a skin-friendly layer, wherein the fabric layer is a high-density polyester fabric, the heat-insulating layer is a composite gel layer, the skin-friendly layer is an electrostatic spinning layer, the composite gel layer is formed by compositing a macroporous gel layer and a small pore gel layer, the porosity of the macroporous gel layer is 90-95%, the average pore diameter is 100-130nm, the porosity of the small pore gel layer is 96-99%, and the average pore diameter is 50-100nm. Preferably, the preparation method of the multi-component heat-preservation high-density polyester fabric comprises the following steps: S1, performing alkali deweighting treatment on the polyester fabric to obtain a surface modified polyester fabric; s2, coating cellulose hydrogel with the thickness of 1-2mm on one side of the modified polyester fabric, soaking the modified polyester fabric in ethanol solution to gel the modified polyester fabric, and preparing the polyester fabric covered with the macroporous gel layer; S3, carrying out instantaneous high-temperature heat setting on the polyester fabric covered with the macroporous gel layer and prepared in the step S2 to obtain the polyester fabric with the surface carbonized macroporous gel layer; S4, coating cellulose/wool mixed gel with the thickness of 0.2-0.4mm on the surface of the polyester fabric with the surface carbonized macroporous gel layer prepared in the step S3, and drying to obtain the polyester fabric loaded with the heat preservation layer; S5, preparing a skin-friendly layer on the surface of the polyester fabric loaded with the heat preservation layer prepared in the step S4 through electrostatic spinning, and finally obtaining the multi-component heat-preservation high-density polyester fabric. Preferably, the alkali deweighting treatment process adopts 10-20% of sodium hydroxide solution, the treatment temperature is 80-85 ℃, the solid-liquid ratio is 1:40-60, and the treatment time is 40-90s respectively. Preferably, the preparation method of the cellulose hydrogel comprises the steps of dissolving microcrystalline cellulose in NaOH/urea mixed aqueous solution at the temperature of-5 ℃ and stirring to obtain cellulose/NaOH/urea mixed aqueous solution, then placing the aqueous solution in a refrigerator at the temperature of-20 to-15 ℃ to freeze 24h, and then thawing to obtain the cellulose hydrogel with the concent