Preparation method of intelligent temperature-adjusting fabric

Abstract

The invention relates to a preparation method of an intelligent temperature-adjusting fabric. The preparation method comprises the following specific steps: (1) pre-treating a gray fabric; (2) pigment printing: preparing printing paste A according to a conventional pigment printing paste preparation process; (3) adding 1-5wt% of phase change material microcapsules into the printing paste A to obtain printing paste B; and (4) printing with the printing paste B by adopting a conventional pigment printing process, and finally performing after-treatment softening and drying to obtain the intelligent temperature-adjusting fabric. According to the invention, a pigment printing process is adopted, and no additional process is added, so that the simplicity and the performability of operation are ensured on the basis of the same printing process. And the temperature-regulating phase-change microcapsules are added into the printing paste, so that the required intelligent temperature regulating effect can be achieved without increasing extra cost. According to the printing process of pigment printing, a layer of film can be formed on the surface of the fabric by a pigment printing adhesive, so that the leakage of the phase change material in the microcapsule is reduced to a certain extent, and the service time of the temperature regulation performance is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of textiles, and in particular to a method for preparing an intelligent temperature-regulating fabric. Background Art

[0002] With the serious problem of global energy depletion, the development of renewable energy is imminent, and phase change energy storage materials have become a hot spot for research and development. Its development can alleviate energy pressure. Among domestic universities, Su Juqiao and others from Shaanxi University of Science and Technology, together with Yang Qi and others from Sichuan University and Guizhou Tire Co., Ltd., studied the preparation and temperature-sensitive response performance of conductive composite phase change energy storage materials. The team used a solution-melt blending method to prepare PLA / MWCNTs / PEG conductive composite phase change energy storage materials, which have excellent processing performance, corrosion resistance and easy processing, and are widely used in the field of conductivity. When 30% PEG is added, the initial crystallization temperature of the composite material increases from 109.2℃ to 126.5℃, but due to severe phase separation during blending, it cannot be applied to textiles using a suitable process.

[0003] Therefore, developing a textile printing and dyeing process is in line with market demand, has broad market value and application market, and has a positive role in promoting the development of the field of smart textiles. Summary of the invention

[0004] In order to solve the above technical problems, the purpose of the patent of this invention is to provide a simple and easy-to-operate method for preparing intelligent temperature-regulating fabrics, so as to mass-produce intelligent temperature-regulating fabrics and put them into civilian use.

[0005] To achieve the above object, the present invention provides a method for preparing an intelligent temperature regulating fabric, and the specific steps are as follows:

[0006] (1) Grey fabric pretreatment: First, the grey fabric is seam-turned and singed, then desized, scour, bleached, and dried at 100-105°C to obtain a semi-finished product that has been pretreated. After the impurities are removed from the grey fabric, the adhesion of the adhesive is increased, which can effectively improve the friction color fastness of the pigment printing product.

[0007] (2) Pigment printing: Prepare printing paste A according to the conventional pigment printing paste preparation process: thickener 1% to 3wt%; binder 3% to 5wt%; coating 1% to 5wt%; the balance is water.

[0008] (3) Add 1% to 5wt% of phase change material microcapsules to printing paste A to obtain printing paste B; add as much phase change material microcapsules as possible to ensure the temperature adjustment effect under the premise of ensuring that all indicators of the pigment printing product are qualified. When the amount exceeds 5wt%, the fastness of the pigment printing adhesive will be reduced, and the friction fastness and water-based appearance indicators of the pigment printing cannot be guaranteed.

[0009] (4) Printing is performed using the printing paste B using a conventional pigment printing process, followed by post-processing, softening, and drying to obtain an intelligent temperature-regulating fabric.

[0010] Furthermore, the finishing working liquid contains softener, color fixative, pH adjuster, etc. The specific prescription is determined according to the customer's hand feeling requirements and laboratory pre-production samples. The finishing equipment is a stenter setting machine. The stenter working liquid is prepared at room temperature and added to the rolling tank. After the pressure roller, the liquid rate is 60% to 68%, the stentering temperature is 160℃ and the time is 60 to 90S.

[0011] Furthermore, in the step (3), the viscosity of the printing paste B is 10000-50000 mpas (NDJ5S viscometer No. 4 rotor test data). The use of the viscosity range of the coating printing sound quality lines are clear and the printing process is smooth, with less screen blocking phenomenon. If the viscosity is too low, the sound quality is smooth but the pattern is not fine, and the edge is easy to bleed. If the viscosity is too high, the screen holes are blocked during the printing process, resulting in defects such as white spots and missed printing.

[0012] Furthermore, in step (1), the drying method is hot air drying or infrared drying at a temperature of 100-120° C. Low-temperature drying ensures the effectiveness of the phase change material, minimizes volatilization, and ensures that the adhesive polymer chain has sufficient time to stretch and rearrange the chain segments at low temperature, which is more conducive to the phase change microcapsules and pigments being firmly fixed on the fiber. The adhesive polymer chain is spread evenly on the fabric surface, reducing roughness, reducing friction resistance, and improving friction color fastness.

[0013] Furthermore, in the step (3), the phase change material microcapsules are commercially available phase change microcapsule finished products.

[0014] Furthermore, in step (3), the baking temperature is 130-165°C for 40 seconds. This temperature is the temperature at which the adhesive and the crosslinking agent react. If the temperature is lower than this, no crosslinking reaction will occur and the adhesive fastness will not be achieved. The drying time is 40 seconds, which is the shortest time to obtain the best fastness, saving energy and improving production efficiency.

[0015] The thickener is an acrylic thickener; the adhesive is an acrylic adhesive or a polyurethane adhesive; the thickener and the adhesive are both acrylic, and it is not easy for the latex particles to merge and cause the latex particles to be too large to block the printing mesh.

[0016] The phase change material microcapsule is a phase change material microcapsule with one or a mixture of C14 alkane, C16 alkane, C18 alkane and PEG (polyethylene glycol) as the core material.

[0017] The specific steps of the step (4) are baking → softening → stretching → dropping the cloth;

[0018] The baking process is performed at a working temperature of 120-145° C. for 5 minutes. If the temperature is too high, the phase change material is easy to volatilize, and a certain amount of smoke will be emitted, causing certain safety hazards.

[0019] The steps of infiltration desizing and scouring in the pretreatment process are: 2-5 g / L hydrogen peroxide, 1-4 g / L alkali agent, 0.2-0.5 g / L chelating dispersant, 2-4 g / L refining agent or scouring agent, temperature 96±4°C, scouring time 35-45 minutes - 85-95 degree hot water washing for 1-2 minutes - cold water washing for 1-2 minutes - cold water washing for 1-2 minutes.

[0020] The alkaline agent is one or a mixture of sodium hydroxide, strong potassium oxide, sodium carbonate or sodium bicarbonate. The chelating dispersant is a calcium and magnesium ion chelating agent, and the penetrant is a fatty alcohol polyoxyethylene polyoxypropylene alkyl ether. The specific scouring time and washing time are determined according to the thickness of the fabric to be treated.

[0021] According to another aspect of the present invention, another object of the present invention is to use the intelligent temperature regulating fabric obtained by the above steps for products in the fields of warm clothing, outdoor sleeping bags, bedding and home furnishings.

[0022] Beneficial Effects

[0023] 1. The process of paint printing is adopted, and no additional process is added to ensure the simplicity and feasibility of operation. On the basis of the same printing process, the temperature-adjusting phase-change microcapsules are added into the printing paste, and the required intelligent temperature-adjusting effect can be achieved without adding additional processes.

[0024] 2. The coating printing process adopted by the present invention forms a film on the surface of the fabric due to the coating printing adhesive, which reduces the leakage of the phase change material inside the microcapsule to a certain extent and prolongs the use time of the temperature regulating performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is a comparison chart of the temperature rise curves of the intelligent temperature regulating fabric of Example 1 and the conventional fabric;

[0027] Figure 2 This is a comparison chart of the temperature rise curves of the intelligent temperature regulating fabric of Example 2 and the conventional fabric;

[0028] Figure 3 This is a comparison chart of the temperature rise curves of the intelligent temperature regulating fabric of Example 3 and the conventional fabric.

[0029] In the figure, the horizontal axis is time, the unit is min, and the vertical axis is temperature, the unit is Celsius °C. DETAILED DESCRIPTION

[0030] Hereinafter, the present invention will be described in detail. Before describing, it should be understood that the terms used in this specification and the appended claims should not be interpreted as being limited to the general meaning and dictionary meaning, but should be interpreted according to the meaning and concept corresponding to the technical aspects of the present invention on the basis of the principle that the inventor is allowed to appropriately define the terms for the best interpretation. Therefore, the descriptions presented here are only preferred examples for illustrative purposes and are not intended to limit the scope of the present invention, so that it should be understood that other equivalents or improvements can be obtained therefrom without departing from the spirit and scope of the present invention.

[0031] The following examples are only listed as examples of embodiments of the present invention and do not constitute any limitation to the present invention. It can be understood by those skilled in the art that modifications within the scope of the essence and concept of the present invention fall within the scope of protection of the present invention. Unless otherwise specified, the reagents and instruments used in the following examples are all commercially available products.

[0032] Hereinafter, the preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Before the description, it should be understood that the terms used in the specification and the appended claims should not be interpreted as limited to the general and dictionary meanings, but should be interpreted based on the principle of allowing the inventor to appropriately define the terms for the best interpretation, based on the meaning and concept corresponding to the technical level of the present invention. Therefore, the description herein is only a preferred example for illustrative purposes, and is not intended to limit the scope of the present invention, so it should be understood that other equivalent implementations and modifications can be made without departing from the spirit and scope of the present invention.

[0033] As used herein, the terms "include", "comprising", "having", "containing" or any other similar terms are open-ended transitional phrases, which are intended to cover non-exclusive inclusions. For example, a composition or article containing multiple elements is not limited to the elements listed herein, but may also include other elements that are not explicitly listed but are generally inherent to the composition or article. In addition, unless otherwise expressly stated, the term "or" refers to an inclusive "or" rather than an exclusive "or". For example, any of the following situations satisfies the condition "A or B": A is true (or exists) and B is false (or does not exist), A is false (or does not exist) and B is true (or exists), and both A and B are true (or exist). In addition, as used herein, the terms "include", "comprising", "having", and "containing" should be interpreted as having been specifically disclosed and simultaneously covering closed or semi-closed transitional phrases such as "consisting of" and "consisting essentially of".

[0034] In this article, all features or conditions defined in the form of numerical ranges or percentage ranges are only for brevity and convenience. Accordingly, the description of numerical ranges or percentage ranges should be deemed to have covered and specifically disclosed all possible secondary ranges and individual values ​​within the range, especially integer values. For example, the range description of "1 to 8" should be deemed to have specifically disclosed all secondary ranges such as 1 to 7, 2 to 8, 2 to 6, 3 to 6, 4 to 8, 3 to 8, etc., especially secondary ranges defined by all integer values, and should be deemed to have specifically disclosed individual values ​​such as 1, 2, 3, 4, 5, 6, 7, 8, etc. within the range. Unless otherwise specified, the above interpretation method applies to all contents of the entire present invention, regardless of whether the range is broad or not.

[0035] If the quantity or other numerical value or parameter is expressed as a range, a preferred range or a series of upper and lower limits, it should be understood that all ranges consisting of any upper limit or preferred value of the range and the lower limit or preferred value of the range have been specifically disclosed herein, regardless of whether these ranges are disclosed separately. In addition, if a numerical range is mentioned herein, unless otherwise specified, the range should include its endpoints and all integers and fractions within the range.

[0036] In this document, under the premise of achieving the purpose of the invention, numerical values ​​should be understood to have the accuracy of the number of significant digits of the numerical value. For example, the number 40.0 should be understood to cover the range from 39.50 to 40.49.

[0037] Embodiment 1:

[0038] A method for preparing an intelligent temperature regulating fabric is provided to mass-produce the intelligent temperature regulating fabric for civilian use.

[0039] (1) Grey cloth pretreatment: First, the grey cloth is seam-turned and singed, and then the seam-turned and singed grey cloth is desized, scour, bleached, and dried at 100-105°C to obtain a semi-finished product that has been pretreated for use.

[0040] (2) Pigment printing: Printing paste A was prepared according to the conventional pigment printing paste preparation process: thickener 1wt%; binder 3wt%; coating 2%; balance water. Among them, the thickener used was thickener HS-8100 (a finished product produced by Suzhou Liansheng Chemical), the binder used was binder 8602, a finished product produced by Suzhou Liansheng Chemical, and the phase change material was a phase change material microcapsule finished product with a C12 olefin / C14 olefin mixture as the core material produced by Beijing Yutian Phase Change Energy Storage Technology Co., Ltd.

[0041] The viscosity of printing paste A is 350000mpas

[0042] (3) Adding 3 wt % of phase change material microcapsules to printing paste A to obtain printing paste B, the viscosity of printing paste A is 125000 mpas;

[0043] The conventional pigment printing process was adopted to print with the printing paste B, and the sizing rate was measured to be 160%. Finally, the fabric was softened and dried to obtain the intelligent temperature regulating fabric.

[0044] Embodiment 2:

[0045] A method for preparing an intelligent temperature regulating fabric is provided to mass-produce the intelligent temperature regulating fabric for civilian use.

[0046] (1) Grey cloth pretreatment: First, the grey cloth is seam-turned and singed, and then the seam-turned and singed grey cloth is desized, scour, bleached, and dried at 100-105°C to obtain a semi-finished product that has been pretreated for use.

[0047] (2) Pigment printing: Printing paste A was prepared according to the conventional pigment printing paste preparation process: 2 wt% thickener; 3 wt% binder; 2% coating; the balance was water; wherein the thickener was thickener HS-8100 (a finished product produced by Suzhou Liansheng Chemical), the binder was binder HF-9 (a finished product produced by Suzhou Liansheng Chemical), and the phase change material was a phase change material microcapsule finished product with a C12 olefin / C14 olefin mixture as the core material produced by Beijing Yutian Phase Change Energy Storage Technology Co., Ltd.

[0048] The viscosity of printing paste A is 385000 mpas.

[0049] (3) Adding 2 wt % of phase change material microcapsule solution to printing paste A to obtain printing paste B. The viscosity of printing paste B is 135000 mpas;

[0050] The conventional pigment printing process was adopted to print with the printing paste B. The sizing rate was measured to be 160%. Finally, the fabric was softened and dried to obtain the intelligent temperature regulating fabric.

[0051] Embodiment 3:

[0052] A method for preparing an intelligent temperature regulating fabric is provided to mass-produce the intelligent temperature regulating fabric for civilian use.

[0053] (1) Grey cloth pretreatment: First, the grey cloth is seam-turned and singed, and then the seam-turned and singed grey cloth is desized, scour, bleached, and dried at 100-105°C to obtain a semi-finished product that has been pretreated for use.

[0054] (2) Pigment printing: Printing paste A was prepared according to the conventional pigment printing paste preparation process: 3 wt% thickener; 3 wt% binder; 2%~ coating; the balance was water; wherein the thickener was thickener HS-8100 (a finished product produced by Suzhou Liansheng Chemical), the binder was binder 8602+ (a finished product produced by Suzhou Liansheng Chemical), and the phase change material was a phase change material microcapsule finished product with a C12 olefin / C14 olefin mixture as the core material produced by Beijing Yutian Phase Change Energy Storage Technology Co., Ltd.

[0055] The viscosity of printing paste A is 385000 mpas.

[0056] (3) Adding 2 wt % of phase change material microcapsules to printing paste A to obtain printing paste B. The viscosity of printing paste B is 135000 mpas;

[0057] The conventional pigment printing process was adopted to print with the printing paste B, and the sizing rate was measured to be 163%. Finally, the fabric was softened and dried to obtain the intelligent temperature regulating fabric.

[0058] Comparative Example 1: Printed fabric without adding phase change material in Example 1, other parameters are exactly the same

[0059] Comparative Example 2: Printed fabric without adding phase change material in Example 2, other parameters are exactly the same

[0060] The above fabrics were tested. The test method was as follows: water of the same mass and temperature was poured into the container. When the temperature displayed by the thermometer was consistent, the timing was started. The temperature value was recorded every 30 seconds until the temperature finally reached a consistent level. After the test, a heating-cooling curve was drawn. The temperature regulation performance was evaluated based on the temperature change rate (curve slope). The test results are shown in Table 1. The curve is drawn as follows: Figure 1-3 shown.

[0061] Table 1 Temperature regulating performance test data of temperature regulating fabrics (test time 10 minutes)

[0062]

[0063] The smaller the temperature change value per unit time, the better the temperature adjustment effect. The slower temperature change in Example 1 than in Comparative Example 1 indicates that the addition of phase change microcapsules to absorb heat plays a role in delaying the temperature increase.

[0064] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for preparing an intelligent temperature regulating fabric, characterized in that: The specific steps are as follows: (1) Grey cloth pretreatment: firstly, the grey cloth is seam-turned and singed, and then the seam-turned and singed grey cloth is desized, scour, bleached, and dried at 100-105°C to obtain a semi-finished product after pretreatment for standby use; (2) Pigment printing: Prepare printing paste A according to the conventional pigment printing paste preparation process: thickener 1% to 3wt%; binder 3% to 5wt%; coating 1% to 5wt%; the balance is water; (3) adding 1% to 5wt% of phase change material microcapsules to printing paste A to obtain printing paste B; (4) Printing is performed using the printing paste B using a conventional paint printing process, followed by post-processing, softening, and drying to obtain an intelligent temperature-regulating fabric.

2. The method for preparing an intelligent temperature regulating fabric according to claim 1, characterized in that: In the step (3), the viscosity of the printing paste B is 10000-50000 mpas (test data of rotor No. 4 of NDJ5S viscometer).

3. The method for preparing an intelligent temperature regulating fabric according to claim 1, characterized in that: The drying method in step (1) is hot air drying at a temperature of 100-120° C. or infrared drying.

4. The method for preparing an intelligent temperature regulating fabric according to claim 1, characterized in that: In the step (3), the phase change material microcapsules are commercially available finished phase change microcapsules; the phase change material microcapsules are phase change material microcapsules with one or a mixture of C14 alkanes, C16 alkanes, C18 alkanes, PEG (polyethylene glycol) as the core material.

5. The method for preparing an intelligent temperature regulating fabric according to claim 1, characterized in that: In the step (3), the baking temperature is 130-165° C., and the baking time is 40 seconds.

6. The method for preparing an intelligent temperature regulating fabric according to claim 1, characterized in that: The thickener is an acrylic thickener; the adhesive is an acrylic adhesive or a polyurethane adhesive.

7. The method for preparing an intelligent temperature regulating fabric according to claim 1, characterized in that: The specific steps of the step (4) are baking → softening → stretching → dropping the cloth; The baking process is performed at a working temperature of 120-145° C. and a time of 5 minutes.

8. The method for preparing an intelligent temperature regulating fabric according to claim 1, characterized in that: The infiltration desizing and scouring process in the pre-treatment process is: hydrogen peroxide 2-5 g / L, alkali agent 1-4 g / L, chelating dispersant 0.2-0.5 g / L, refining agent or scouring agent 2-8 g / L, temperature 96±4°C, scouring time 35-50 minutes - 85-95 degree hot water washing for 1-2 minutes - cold water washing for 1-2 minutes - cold water washing for 1-2 minutes.

9. The method for preparing the intelligent temperature regulating fabric according to claim 8, characterized in that: The alkaline agent is sodium hydroxide, potassium hydroxide, sodium carbonate, or one or a mixture of sodium bicarbonate and sodium phosphate; the chelating dispersant is a calcium and magnesium ion chelating agent, and the penetrant is a fatty alcohol polyoxyethylene polyoxypropylene alkyl ether.

10. Application of the intelligent temperature regulating fabric obtained according to claims 1-9 in the fields of warm clothing, outdoor sleeping bags, bedding and home furnishing.

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