CN112899792B - Heating composite fabric and preparation method thereof - Google Patents
Heating composite fabric and preparation method thereof Download PDFInfo
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- CN112899792B CN112899792B CN202110099328.3A CN202110099328A CN112899792B CN 112899792 B CN112899792 B CN 112899792B CN 202110099328 A CN202110099328 A CN 202110099328A CN 112899792 B CN112899792 B CN 112899792B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/42—Layered products comprising a layer of synthetic resin comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
- C08G12/40—Chemically modified polycondensates
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
- D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
- D01F2/08—Composition of the spinning solution or the bath
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/04—Cellulosic plastic fibres, e.g. rayon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/304—Insulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
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- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Artificial Filaments (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The invention discloses a heating composite fabric and a preparation method thereof. The modified viscose fiber is used for preparing the fabric, and the viscose fiber can absorb moisture with higher kinetic energy and convert the kinetic energy into heat energy; firstly, viscose fibers are modified inside graphene, then keratin is grafted on the surfaces of the fibers, when the fabric is in contact with skin, the fabric is in contact with the skin through the keratin, the contact feeling of the fabric is improved, the heat loss of the skin surface during sweat evaporation can be reduced, after the fabric is prepared, a layer of heat-preservation water-absorbing film is attached to the outer side of the fabric, and after the melamine formaldehyde resin modified by organic silicon, the melamine formaldehyde resin can be better attached to a triazine ring to form a net structure in the resin, so that more moisture in the air can be captured; the viscose fiber with excellent performance can be prepared more quickly by wet spinning carried out by pressurizing twice.
Description
Technical Field
The invention relates to the field of fabrics, in particular to a heating composite fabric and a preparation method thereof.
Background
With the continuous development of the times, the requirements of people on the quality of life are higher and higher. In cold winter, people pursue cold protection and warm keeping simply, and pay more attention to the pursuit of health and beauty. The requirement of the old people suffering from rheumatism and arthritis on beauty, comfort and warmth cannot be met particularly by a passive warm-keeping mode of increasing the thickness of the clothes. Therefore, the research and development of the heating fabric capable of realizing active warm keeping are very important.
When the outdoor temperature is low, the cold wind is often accompanied, and when the humidity in the air is high, under the severe environment, if the composite fabric capable of actively heating can be researched, the development prospect is very promising. Therefore, it is very necessary to prepare a heating composite fabric.
Disclosure of Invention
The invention aims to provide a heating composite fabric to solve the problems in the background technology.
In order to solve the above technical problem, a first aspect of the present invention provides the following technical solutions: the heating composite fabric is characterized by comprising the following raw materials in parts by weight:
50-100 parts of modified viscose fiber and 5-10 parts of modified melamine formaldehyde resin.
Preferably, the modified viscose fiber is prepared by modifying the inside of viscose through graphene and grafting keratin on the surface of the viscose.
Preferably, the modified melamine-formaldehyde resin is prepared by modifying a melamine-formaldehyde resin with organic silicon.
The second aspect of the present invention provides: a method for preparing a heating composite fabric,
preferably, the method comprises the following specific steps:
(1) dissolving the viscose in the NMMO solution, and uniformly stirring to prepare a spinning solution;
(2) placing graphite into a reaction container, slowly adding fuming nitric acid, then slowly adding sodium fluosilicate to react for 24 hours, washing 5 times with 5% hydrochloric acid after the reaction is finished, then washing with distilled water until the solution is neutral, stripping the graphene oxide dispersion liquid for 1 hour by ultrasonic equipment, then adding sodium hydroxide as a reducing agent and polyvinylpyrrolidone as a dispersing agent, and reacting for 12 hours under the water bath heating condition of 95 ℃ to obtain the graphene dispersion liquid;
(3) adding the graphene dispersion liquid into the spinning solution obtained in the step (1), and carrying out full grinding and mechanical stirring under the pressurized condition to obtain a graphene modified spinning solution;
(4) adding a keratin solution into the graphene modified spinning solution, adding cerium ammonium nitrate, and standing at room temperature for 5 hours to obtain a modified spinning solution;
(5) carrying out wet spinning by using the modified spinning solution to obtain nascent viscose fibers, and weaving the nascent viscose fibers into a fabric;
(6) adding melamine, paraformaldehyde and organic silicon into a three-neck flask provided with a stirrer, a thermometer and a condenser, adding a sodium hydroxide aqueous solution as a catalyst, adjusting the pH value of the system to 8.5, heating in a water bath under stirring for reaction for 1.5h at the temperature of 90 ℃, adding a dissolved polyvinyl alcohol aqueous solution, continuing the reaction for 1-2 h, and curing with hydrochloric acid to obtain modified melamine-formaldehyde resin;
(7) making a template by using glass, adjusting a level meter to be horizontal, injecting the modified melamine formaldehyde resin reaction solution onto a glass plate sprayed with a release agent in advance, scraping a film by using a smooth metal bar, then placing the glass plate into an oven, baking the glass plate at 130 ℃ for 5min, taking out the glass plate, slitting the glass plate along the periphery by using a blade, and demolding to form a film;
(8) and cutting the film into a shape consistent with the size of the fabric, and fitting to obtain a finished product.
Preferably, in the step (2): the volume ratio of the graphene dispersion liquid to the spinning solution is 1: 20.
preferably, in the step (4): in wet spinning, spinning solution is extruded from a spinneret orifice to form a thin flow, and then pressurized and pressurized by 151kPa before entering a coagulation bath, and the thin flow is coagulated in the coagulation bath to obtain nascent viscose fibers.
Preferably, in the step (6): the mass ratio of melamine to paraformaldehyde to organic silicon is 1: 1: 1.
compared with the prior art, the invention has the following beneficial effects:
the modified viscose fiber is used for preparing the fabric, and the viscose fiber can absorb moisture with higher kinetic energy and convert the kinetic energy into heat energy; firstly, viscose fiber is internally modified by graphene, so that the microstructure of the fiber is changed, the overall outline of the surface is changed from smooth to uneven, a small amount of graphene is attached, keratin is grafted on the surface of the fiber, the surface area is increased due to the uneven surface, the content of the keratin is increased, when the fabric is contacted with the skin, the contact feeling of the fabric is improved through the contact of the keratin, and gaps are formed between the fabric and the surface of the skin, when sweat on the surface of the skin evaporates, the fabric can absorb the sweat on the surface of the skin through the keratin and evaporate the sweat on the surface of the fabric, so that the heat loss on the surface of the skin during the evaporation of the sweat is reduced, as the temperature of the fabric is increased, the graphene can generate far infrared rays which can be absorbed by a human body during the heating, generate resonance with the moisture in the keratin and a resin film, the circulation of the moisture in the modified viscose fiber is accelerated, and the retention time of the moisture on the resin film is reduced, accelerating the circulation of moisture and releasing the generated heat.
After the fabric is prepared, the modified melamine formaldehyde resin is prepared into a film to be attached, so that a layer of heat-insulating water-absorbing film is formed on the outer side of the fabric, more water with higher kinetic energy in the air is captured while heat is preserved, the water can be adsorbed to the surface of the fiber from the resin, the volume change caused by the absorption and desorption of the resin from the air is prevented, the kinetic energy of absorbed water molecules can be converted into more heat energy by viscose fiber, the active heating effect is achieved, the absorbed water is absorbed and transferred again when the water-absorbing film is subjected to temperature rise and evaporation, and circulation is formed in the fabric; the fabric forms a heat-insulating layer through a gap formed by contacting keratin and the membrane, so that the heat-insulating effect is enhanced; through the modified melamine formaldehyde resin of organosilicon, the hydroxyl of organosilicon reacts with the imino on the melamine and generates block structure, makes organosilicon get into the macromolecule, increases the distance between the triazine ring, and the silicon oxygen bond of introducing not only is very soft, makes melamine formaldehyde resin softer, has reduced the fragility, makes its laminating that can be better with the surface fabric, still forms network structure with the triazine ring in the resin, can catch the moisture in more air.
Mixing the viscose stock solution and the graphene dispersion solution to prepare a spinning stock solution, and pressurizing for the first time, so that not only is the graphene in the spinning stock solution more uniform, but also defoaming and ripening are omitted after the prepared spinning stock solution is filtered, and the spinning stock solution is directly obtained; and extruding the spinning stock solution from the spinneret orifices to form a thin stream, pressurizing again before entering a coagulating bath, so that the thin stream entering the coagulating agent permeates more quickly, and the time for the stock solution to reach the critical concentration and then be separated out into fibers is shortened.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The heating composite fabric is characterized by comprising the following raw materials in parts by weight:
50-100 parts of modified viscose fiber and 5-10 parts of modified melamine formaldehyde resin.
Preferably, the modified viscose fiber is prepared by modifying the inside of viscose through graphene and grafting keratin on the surface of the viscose.
Preferably, the modified melamine-formaldehyde resin is prepared by modifying a melamine-formaldehyde resin with organic silicon.
The second aspect of the present invention provides: a preparation method of a heating composite fabric is characterized by comprising the following steps:
the process flow is as follows:
preferably, the method comprises the following specific steps:
(1) dissolving the viscose in the NMMO solution, and uniformly stirring to prepare a spinning solution;
(2) placing graphite into a reaction container, slowly adding fuming nitric acid, then slowly adding sodium fluosilicate to react for 24 hours, washing 5 times with 5% hydrochloric acid after the reaction is finished, then washing with distilled water until the solution is neutral, stripping the graphene oxide dispersion liquid for 1 hour by ultrasonic equipment, then adding sodium hydroxide as a reducing agent and polyvinylpyrrolidone as a dispersing agent, and reacting for 12 hours under the water bath heating condition of 95 ℃ to obtain the graphene dispersion liquid;
(3) adding the graphene dispersion liquid into the spinning solution obtained in the step (1), and carrying out full grinding and mechanical stirring under the pressurized condition to obtain a graphene modified spinning solution;
(4) adding a keratin solution into the graphene modified spinning solution, adding cerium ammonium nitrate, and standing at room temperature for 5 hours to obtain a modified spinning solution;
(5) carrying out wet spinning by using the modified spinning solution to obtain nascent viscose fibers, and weaving the nascent viscose fibers into a fabric;
(6) adding melamine, paraformaldehyde and organic silicon into a three-neck flask provided with a stirrer, a thermometer and a condenser, adding a sodium hydroxide aqueous solution as a catalyst, adjusting the pH value of the system to 8.5, heating in a water bath under stirring for reaction for 1.5h at the temperature of 90 ℃, adding a dissolved polyvinyl alcohol aqueous solution, continuing the reaction for 1-2 h, and curing with hydrochloric acid to obtain modified melamine-formaldehyde resin;
(7) making a template by using glass, adjusting a level meter to be horizontal, injecting the modified melamine formaldehyde resin reaction solution onto a glass plate sprayed with a release agent in advance, scraping a film by using a smooth metal bar, then placing the glass plate into an oven, baking the glass plate at 130 ℃ for 5min, taking out the glass plate, slitting the glass plate along the periphery by using a blade, and demolding to form a film;
(8) and cutting the film into a shape consistent with the size of the fabric, and fitting to obtain a finished product.
Preferably, in the step (2): the volume ratio of the graphene dispersion liquid to the spinning solution is 1: 20.
preferably, in the step (4): in wet spinning, spinning solution is extruded from a spinneret orifice to form a thin flow, and then pressurized and pressurized by 151kPa before entering a coagulation bath, and the thin flow is coagulated in the coagulation bath to obtain nascent viscose fibers.
Preferably, in the step (6): the mass ratio of melamine to paraformaldehyde to organic silicon is 1: 1: 1.
example 1: heating a first composite fabric:
a heating composite fabric comprises the following components in parts by weight:
the modified viscose fiber is 50 parts by weight, and the modified melamine formaldehyde resin is 5 parts by weight.
The preparation method of the fabric comprises the following steps:
(1) dissolving the viscose in the NMMO solution, and uniformly stirring to prepare a spinning solution;
(2) placing graphite into a reaction container, slowly adding fuming nitric acid, then slowly adding sodium fluosilicate to react for 24 hours, washing 5 times with 5% hydrochloric acid after the reaction is finished, then washing with distilled water until the solution is neutral, stripping the graphene oxide dispersion liquid for 1 hour by ultrasonic equipment, then adding sodium hydroxide as a reducing agent and polyvinylpyrrolidone as a dispersing agent, and reacting for 12 hours under the water bath heating condition of 95 ℃ to obtain the graphene dispersion liquid;
(3) adding a graphene dispersion liquid into the spinning solution obtained in the step (1), wherein the volume ratio of the graphene dispersion liquid to the spinning solution is 1: 20, fully grinding and mechanically stirring under the condition of pressurization to prepare a graphene modified spinning solution;
(4) adding a keratin solution into the graphene modified spinning solution, wherein the volume ratio of the keratin solution to the spinning solution is 1: 20, adding ammonium ceric nitrate, and standing at room temperature for 5 hours to obtain a modified spinning solution;
(5) carrying out wet spinning by using the modified spinning solution, extruding the spinning solution from a spinneret orifice to form a trickle, pressurizing and pressurizing 151kPa before entering a coagulation bath, coagulating the trickle in the coagulation bath to obtain nascent viscose, and weaving the nascent viscose into a fabric;
(6) adding melamine, paraformaldehyde and organic silicon into a three-neck flask provided with a stirrer, a thermometer and a condenser, wherein the mass ratio of the melamine to the paraformaldehyde to the organic silicon is 1: 1: adding a sodium hydroxide aqueous solution as a catalyst, adjusting the pH value of the system to 8.5, heating in a water bath under stirring for reacting for 1.5h at 90 ℃, adding a dissolved polyvinyl alcohol aqueous solution, continuing to react for 1h, and curing by hydrochloric acid to obtain modified melamine-formaldehyde resin;
(7) making a template by using glass, adjusting a level meter to be horizontal, injecting the modified melamine formaldehyde resin reaction solution onto a glass plate sprayed with a release agent in advance, scraping a film by using a smooth metal bar, then placing the glass plate into an oven, baking the glass plate at 130 ℃ for 5min, taking out the glass plate, slitting the glass plate along the periphery by using a blade, and demolding to form a film;
(8) and cutting the film into a shape consistent with the size of the fabric, and fitting to obtain a finished product.
Example 2: and (3) heating a composite fabric II:
a heating composite fabric comprises the following components in parts by weight:
the modified viscose fiber is 100 parts by weight, and the modified melamine formaldehyde resin is 10 parts by weight.
The preparation method of the fabric comprises the following steps:
(1) dissolving the viscose in the NMMO solution, and uniformly stirring to prepare a spinning solution;
(2) placing graphite into a reaction container, slowly adding fuming nitric acid, then slowly adding sodium fluosilicate to react for 24 hours, washing 5 times with 5% hydrochloric acid after the reaction is finished, then washing with distilled water until the solution is neutral, stripping the graphene oxide dispersion liquid for 1 hour by ultrasonic equipment, then adding sodium hydroxide as a reducing agent and polyvinylpyrrolidone as a dispersing agent, and reacting for 12 hours under the water bath heating condition of 95 ℃ to obtain the graphene dispersion liquid;
(3) adding the dispersion liquid into the spinning solution obtained in the step (1), wherein the volume ratio of the graphene dispersion liquid to the spinning solution is 1: 20, fully grinding and mechanically stirring under the condition of pressurization to prepare a graphene modified spinning solution;
(4) adding a keratin solution into the graphene modified spinning solution, wherein the volume ratio of the keratin solution to the spinning solution is 1: 20, adding ammonium ceric nitrate, and standing at room temperature for 5 hours to obtain a modified spinning solution;
(5) carrying out wet spinning by using the modified spinning solution, extruding the spinning solution from a spinneret orifice to form a trickle, pressurizing and pressurizing 151kPa before entering a coagulation bath, coagulating the trickle in the coagulation bath to obtain nascent viscose, and weaving the nascent viscose into a fabric;
(6) adding melamine, paraformaldehyde and organic silicon into a three-neck flask provided with a stirrer, a thermometer and a condenser, wherein the mass ratio of the melamine to the paraformaldehyde to the organic silicon is 1: 1: adding a sodium hydroxide aqueous solution as a catalyst, adjusting the pH value of the system to 8.5, heating in a water bath under stirring for reacting for 1.5h at 90 ℃, adding a dissolved polyvinyl alcohol aqueous solution, continuing to react for 2h, and curing by hydrochloric acid to obtain modified melamine-formaldehyde resin;
(7) making a template by using glass, adjusting a level meter to be horizontal, injecting the modified melamine formaldehyde resin reaction solution onto a glass plate sprayed with a release agent in advance, scraping a film by using a smooth metal bar, then placing the glass plate into an oven, baking the glass plate at 130 ℃ for 5min, taking out the glass plate, slitting the glass plate along the periphery by using a blade, and demolding to form a film;
(8) and cutting the film into a shape consistent with the size of the fabric, and fitting to obtain a finished product.
Comparative example 1
The formulation of comparative example 1 was the same as example 1. The preparation method of the antibacterial fabric is different from that of the antibacterial fabric in the embodiment 1 only in that the step (4) is not carried out, the step (5) directly uses the graphene modified spinning solution to carry out wet spinning, and the rest preparation steps are the same as those of the embodiment 1.
Comparative example 2
Comparative example 2 was formulated as in example 1. The preparation method of the antibacterial fabric is different from that of the embodiment 1 only in the step (6), the step (6) is replaced by adding melamine and paraformaldehyde into a three-neck flask provided with a stirrer, a thermometer and a condenser, and the mass ratio of the melamine to the paraformaldehyde is 1: 1, adding an aqueous solution of sodium hydroxide as a catalyst, adjusting the pH value of the system to 8.5, heating in a water bath under stirring for reacting for 1.5h at 90 ℃, adding a dissolved aqueous solution of polyvinyl alcohol, continuing to react for 2h, and curing by hydrochloric acid to obtain melamine-formaldehyde resin, wherein the rest preparation steps are the same as those in example 1.
Comparative example 3
The formulation of comparative example 3 was the same as example 1. The preparation method of the antibacterial fabric is different from that of the embodiment 1 only in that the fabric is prepared by directly performing wet spinning and weaving without performing the preparation of the steps (6), (7) and (8). The rest of the preparation steps are the same as example 1.
Test example 1
1. Test method
Example 1 and comparative examples 1, 2 and 3 are control tests, the mice are completely covered by the heating composite fabric, namely the mice are placed in the same cold environment for 1h, and the surface temperature change of the skin of the mice before and after the mice are recorded.
2. Test results
Example 1 was compared with comparative examples 1, 2 and 3 with respect to the change in temperature before and after the comparison.
TABLE 1 temperatures (. degree. C.)
By comparing the temperature change of the heating composite fabric prepared in the example 1 with the temperature change of the heating composite fabric prepared in the comparative examples 1, 2 and 3 in the same cold environment, the fact that the temperature change of the heating composite fabric prepared in the example 1 is small can be obviously found, and the fact that the keratin and the heat-preservation water-absorption film used in the invention can preserve heat to different degrees indicates that the heating composite fabric prepared in the invention has excellent heating and heat-preservation performances.
Test example 2
1. Test method
Example 1 and comparative example 3 are comparison tests, the example 1 and the comparative example 3 are placed in the same environment for 3 hours, and the humidity of the surrounding environment of the fabric is measured for comparison.
2. Test results
Example 1 was compared to comparative example 3 with respect to the change in humidity before and after the change in humidity.
TABLE 2 humidity (%)
| Before 3h | After 3 hours | |
| Example 1 | 62.3 | 55.1 |
| Comparative example 3 | 61.7 | 58.3 |
By comparing the ambient humidity of the example 1 with that of the comparative example 3 in the same environment, it can be obviously found that the humidity around the example 1 is greatly changed, which shows that the heating composite fabric prepared by the invention can capture more moisture in the air to convert the heat energy, and indicates that the heating composite fabric prepared by the invention has excellent heating performance.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The preparation method of the heating composite fabric is characterized by comprising the following raw materials in parts by weight: 50-100 parts of modified viscose fiber and 5-10 parts of modified melamine formaldehyde resin;
the modified viscose fiber is prepared by modifying viscose through the interior of graphene and grafting keratin on the surface of the viscose;
the modified melamine-formaldehyde resin is prepared by modifying melamine-formaldehyde resin with organic silicon;
the preparation method of the heating composite fabric comprises the following specific steps:
(1) dissolving viscose in the NMMO solution, and uniformly stirring to prepare viscose spinning solution;
(2) placing graphite into a reaction container, slowly adding fuming nitric acid, then slowly adding sodium fluosilicate to react for 24 hours, washing 5 times with 5% hydrochloric acid after the reaction is finished, then washing with distilled water until the solution is neutral, stripping the graphene oxide dispersion liquid for 1 hour by ultrasonic equipment, then adding sodium hydroxide as a reducing agent and polyvinylpyrrolidone as a dispersing agent, and reacting for 12 hours under the water bath heating condition at 95 ℃ to obtain the graphene dispersion liquid;
(3) adding the graphene dispersion liquid into the viscose spinning solution obtained in the step (1), and carrying out full grinding and mechanical stirring under the pressurized condition to obtain a graphene modified spinning solution;
(4) adding a keratin solution into the graphene modified spinning solution, adding cerium ammonium nitrate, and standing at room temperature for 5 hours to obtain a modified spinning solution;
(5) carrying out wet spinning by using the modified spinning solution to obtain nascent viscose fibers, and weaving the nascent viscose fibers into a fabric;
(6) adding melamine, paraformaldehyde and organic silicon into a three-neck flask provided with a stirrer, a thermometer and a condenser, adding a sodium hydroxide aqueous solution as a catalyst, adjusting the pH value of the system to 8.5, heating in a water bath under stirring for reaction for 1.5h at the temperature of 90 ℃, adding a dissolved polyvinyl alcohol aqueous solution, continuing the reaction for 1-2 h, and curing with hydrochloric acid to obtain modified melamine-formaldehyde resin;
(7) making a template by using glass, adjusting a level meter to be horizontal, injecting the modified melamine formaldehyde resin reaction solution onto a glass plate sprayed with a release agent in advance, scraping a film by using a smooth metal bar, then placing the glass plate into an oven, baking the glass plate at 130 ℃ for 5min, taking out the glass plate, slitting the glass plate along the periphery by using a blade, and demolding to form a film;
(8) and cutting the film into a shape consistent with the size of the fabric, and fitting to obtain a finished product.
2. The method for preparing the heating composite fabric according to claim 1, wherein in the step (3): the volume ratio of the graphene dispersion liquid to the viscose spinning solution is 1: 20.
3. the method for preparing the heating composite fabric according to claim 1, wherein in the step (5): in wet spinning, after the modified spinning solution is extruded from a spinneret orifice to form a thin flow, the thin flow is pressurized at 151kPa before entering a coagulation bath, and the thin flow is coagulated in the coagulation bath to obtain the nascent viscose fiber.
4. The method for preparing the heating composite fabric according to claim 1, wherein in the step (6): the mass ratio of melamine to paraformaldehyde to organic silicon is 1: 1: 1.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111421768.2A CN114013133A (en) | 2021-01-25 | 2021-01-25 | Heating composite fabric |
| CN202110099328.3A CN112899792B (en) | 2021-01-25 | 2021-01-25 | Heating composite fabric and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110099328.3A CN112899792B (en) | 2021-01-25 | 2021-01-25 | Heating composite fabric and preparation method thereof |
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|---|---|---|---|
| CN202111421768.2A Division CN114013133A (en) | 2021-01-25 | 2021-01-25 | Heating composite fabric |
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| Publication Number | Publication Date |
|---|---|
| CN112899792A CN112899792A (en) | 2021-06-04 |
| CN112899792B true CN112899792B (en) | 2022-01-18 |
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