CN-122013366-A - Composite structure suede with temperature control and aurora resistance functions and preparation method

CN122013366ACN 122013366 ACN122013366 ACN 122013366ACN-122013366-A

Abstract

The invention discloses a suede with a composite structure and a preparation method thereof, wherein the suede with a temperature control and aurora resistance function comprises the steps of preparing an inorganic mesoporous silica framework; the preparation method comprises the steps of carrying out vacuum impregnation on a phase change material, carrying out surface modification to form a coating layer, carrying out blending granulation on the modified composite phase change material and polyethylene terephthalate to obtain island component master batches containing the composite phase change material, adopting a sea-island composite spinning process, taking the master batches as islands, taking alkali-soluble copolyester as sea, spinning through a spinneret plate provided with a plurality of functional units, wherein each functional unit comprises at least two special-shaped cross-section spinneret holes arranged in a preset sequence, weaving sea-island fibers into grey cloth, and carrying out post-treatment processing to obtain the suede fabric. According to the invention, the phase change material is subjected to spinning and dyeing and finishing processing through inorganic framework loading and surface modification, and is cooperated with the fiber with multiple special-shaped cross sections, the suede fabric realizes the integration of temperature control and aurora resistance, and the fabric has good washing fastness.

Inventors

SUN YANGYANG
CHEN HONGXIA
LIU HUIRONG

Assignees

江苏华艺服饰有限公司

Dates

Publication Date: 20260512
Application Date: 20260326

Claims (10)

1. The preparation method of the suede with the composite structure and the temperature control and anti-aurora functions is characterized by comprising the following steps of: step one, preparing an inorganic mesoporous silica framework; loading the phase change material into the pore canal of the framework in the first step through a vacuum impregnation method to prepare a composite phase change material; Step three, carrying out surface modification treatment on the composite phase change material prepared in the step two to form a wrapping layer, thus obtaining the surface modified composite phase change material; blending and granulating the surface modified composite phase change material in the third step with polyethylene terephthalate to obtain an island component master batch containing the composite phase change material; step five, adopting a sea-island composite spinning process, taking the island component master batch containing the composite phase change material in the step four as an island component, taking alkali-soluble copolyester as a sea component, and spinning through a spinneret plate, wherein the spinneret plate is provided with a plurality of functional units, and each functional unit comprises at least two spinneret orifices with different special-shaped cross sections and is arranged according to a preset sequence; and step six, weaving the sea-island fibers into grey cloth, and performing after-finishing processing to obtain the suede fabric with the composite structure, wherein the after-finishing processing at least comprises the steps of alkali reduction fiber opening, sanding, dyeing and shaping, and the sequence and specific parameters of each step are adjusted according to the conventional process.
2. The method for preparing suede nap with a composite structure according to claim 1, wherein the inorganic mesoporous silica skeleton in the first step is prepared by a hydrothermal synthesis method, cetyl trimethyl ammonium bromide is used as a template, and the mesoporous skeleton with the pore diameter of 6-8 nm is obtained after the template is removed by calcination.
3. The method of preparing a composite structure suede according to claim 2, wherein the cetyl trimethylammonium bromide template agent is replaced with at least one of a shea-derived cationic surfactant SBATC or a Gemini quaternary ammonium salt surfactant.
4. The method for preparing the suede nap with the composite structure according to claim 1, wherein the surface modification treatment in the third step is specifically to coat the composite phase-change material with a hydrophobizing material in the presence of a catalyst to form a hydrophobizing layer, wherein the catalyst is at least one selected from a bismuth-zirconium bimetallic catalyst, a zinc-zirconium compound catalyst, an organic titanium catalyst and an organic cerium catalyst, and the hydrophobizing material is at least one selected from a polymethylhydrosiloxane, a vinyl-terminated polydimethylsiloxane, a capsaicin-modified polymethylhydrosiloxane and a hydroxyl-containing silicone oil.
5. The method for preparing a suede nap of a composite structure according to claim 1, wherein the surface modification treatment in the third step is specifically to form a polyurea shell layer on the surface of the composite phase change material by an interfacial polymerization method, and then to subject the surface of the polyurea shell layer to a hydrophobic treatment by using polymethylhydrosiloxane.
6. The method of manufacturing a suede nap having a composite structure according to claim 1, wherein the cross-sectional shape of the spinneret hole in the fifth step comprises at least two of a first type of cross-section, a second type of cross-section and a third type of cross-section, wherein the first type of cross-section is a multi-lobal shape or an irregular shape, the second type of cross-section is a flat shape or a cross shape or an H shape, and the third type of cross-section is a sharp corner.
7. The method of manufacturing a composite-structured suede nap according to claim 6, wherein the multi-lobal shape in the fifth step is a four-lobal shape or a three-lobal shape, and the sharp corners are Y-shaped or triangular-shaped.
8. The method for preparing a suede nap of a composite structure according to claim 1, wherein the content of the composite phase-change material of the "island" component master batch in the third step is 9-13%.
9. The method for preparing suede nap of composite structure according to claim 1, wherein the phase change material in the first step is alkane, fatty acid or a mixture of both, and the phase change temperature is 18-32 ℃.
10. A composite structure suede manufactured by the manufacturing method of any one of claims 1 to 9, characterized in that the change rate of glossiness is less than 9% after martindale abrasion resistance test of the suede.

Description

Composite structure suede with temperature control and aurora resistance functions and preparation method Technical Field The invention relates to the technical field of textile manufacturing, in particular to a composite structure suede with temperature control and aurora resistance functions and a preparation method thereof. Background The conventional suede fabric is widely applied to the fields of clothing, home furnishings, automobile interiors and the like by soft hand feeling and elegant suede texture. However, the conventional suede fabric has the following technical problems in the use process that (1) the suede fabric is faced with the problem that the nap is lodged to generate 'aurora' after local friction, the prior art mostly adopts the addition of a delustering agent such as titanium dioxide and the like and the special-shaped section fiber to scatter light, for example, the patent with publication number CN107604464B discloses a preparation method of the double special-shaped section moisture-absorbing sweat-discharging fiber, for example, the patent with publication number CN113737292B discloses a polyester full-extinction superfine denier POY fiber and a production method thereof, but the methods have single functions, the aurora problem after local friction is difficult to be completely avoided simply by virtue of the design of the delustering agent or the fiber section, and excessive addition of the delustering agent can lead to the color and luster of the fabric and the hand feeling degradation. (2) Suede is used for autumn and winter clothing, but the suede for the pleating process is required to be thinner and lighter and contradicts the autumn and winter warm keeping requirement. Phase Change Microcapsule (PCM) technology has been attempted to be applied to textiles to achieve a temperature regulating function, but the prior art generally uses phase change microcapsules as a single function post-finishing agent applied to the surface of the fabric by padding or coating. The after-finishing mode has the defects that the microcapsules are easy to fall off and poor in durability, and the addition of a large number of microcapsules can block fiber gaps, so that the original air permeability and hand feeling style of the fabric are affected, and the temperature control function and the natural texture of the suede are difficult to be considered. Therefore, the prior art lacks a systematic solution for integrally fusing the thermal management function with the structural lodging resistance and extinction function from the fiber design source. Simple functional superposition often leads to reduced optical efficiency, deteriorated hand feeling or insufficient functional durability, and cannot realize the synergy of multiple functions such as temperature control, aurora resistance, lodging resistance and the like. Disclosure of Invention The embodiment of the application solves the technical problems that the suede has single function, the temperature control and the anti-aurora function are difficult to be combined and the functional durability is insufficient in the prior art by providing the composite structure suede with the temperature control and the anti-aurora function and the preparation method, and realizes the integration and fusion of the intelligent temperature control, the structural anti-lodging and the extinction functions from the fiber design source, and the lasting and stable temperature control performance and the anti-aurora effect of the fabric are provided while the soft hand feeling of the suede is maintained. The embodiment of the application provides a preparation method of a composite structure suede with temperature control and aurora resistance, which comprises the following steps: step one, preparing an inorganic mesoporous silica framework; loading the phase change material into the pore canal of the framework in the first step through a vacuum impregnation method to prepare a composite phase change material; Step three, carrying out surface modification treatment on the composite phase change material prepared in the step two to form a wrapping layer, thus obtaining the surface modified composite phase change material; blending and granulating the surface modified composite phase change material in the third step with polyethylene terephthalate to obtain an island component master batch containing the composite phase change material; step five, adopting a sea-island composite spinning process, taking the island component master batch containing the composite phase change material in the step four as an island component, taking alkali-soluble copolyester as a sea component, and spinning through a spinneret plate, wherein the spinneret plate is provided with a plurality of functional units, and each functional unit comprises at least two spinneret orifices with different special-shaped cross sections and is arranged according to a preset sequence; and step six, we